Roj hmab ua Q&A
- Vim li cas cov roj hmab yuav tsum tau molded
Lub hom phiaj ntawm cov roj hmab plasticization yog ua kom luv luv ntawm cov roj hmab loj molecular chains nyob rau hauv txhua yam, thermal, tshuaj thiab lwm yam kev ua, ua rau cov roj hmab ib ntus poob nws elasticity thiab nce nws plasticity, thiaj li yuav ua tau raws li cov txheej txheem ntawm kev tsim khoom. Piv txwv li, ua tus neeg sawv cev sib xyaw ua ke yooj yim rau kev sib xyaw, ua kom yooj yim rau dov thiab extrusion, nrog cov qauv meej molded thiab cov duab ruaj khov, ua rau cov khoom siv molded thiab txhaj tshuaj molded, ua rau nws yooj yim rau cov khoom siv roj hmab nkag mus rau fibers, thiab txhim kho cov solubility. thiab adhesion ntawm cov khoom siv roj hmab. Tau kawg, qee qhov qis viscosity thiab cov viscosity tas li yuav tsis tas yuav plasticized. Cov khoom siv roj hmab hauv tsev, tus qauv Malaysian roj hmab (SMR).
- Yam dab tsi cuam tshuam rau plasticization ntawm roj hmab hauv ib qho khoom siv sab hauv
Kev sib xyaw ntawm cov roj hmab nyoos hauv ib qho khoom siv sab hauv yog sib xyaw nrog qhov kub thiab txias, nrog qhov ntsuas kub tsawg kawg ntawm 120.℃los yog siab dua, feem ntau ntawm 155℃thiab 165℃. Cov roj hmab nyoos yog raug rau qhov kub thiab txias thiab muaj zog txhua yam kev ua haujlwm nyob rau hauv lub chamber ntawm lub tov khoom, uas ua rau oxidation hnyav thiab ua tau zoo tagnrho plasticity nyob rau hauv lub sij hawm luv luv. Yog li, cov ntsiab lus tseem ceeb cuam tshuam rau kev sib xyaw ntawm cov roj hmab nyoos thiab cov yas hauv cov khoom siv sab hauv yog:
(1)Khoom siv kev ua tau zoo, xws li ceev, thiab lwm yam,
(2)Cov txheej txheem txheej txheem, xws li lub sijhawm, qhov kub thiab txias, cua siab, thiab muaj peev xwm.
- Vim li cas cov roj hmab sib txawv muaj cov khoom sib txawv plasticizing
Lub plasticity ntawm roj hmab yog ze ze rau nws cov tshuaj muaj pes tsawg leeg, molecular qauv, molecular hnyav, thiab molecular hnyav tis. Vim lawv cov qauv thiab cov khoom sib txawv, cov roj hmab ntuj thiab cov roj hmab hluavtaws feem ntau yooj yim rau cov yas dua li cov roj hmab hluavtaws. Hais txog cov roj hmab hluavtaws, cov roj hmab isoprene thiab chloroprene roj hmab yog ze rau cov roj hmab ntuj, ua raws li cov roj hmab styrene butadiene thiab butyl roj hmab, thaum cov roj hmab nitrile yog qhov nyuaj tshaj plaws.
- Vim li cas cov yas ntawm cov roj hmab nyoos siv los ua tus qauv zoo rau cov khoom siv yas
Lub plasticity ntawm raw roj hmab muaj feem xyuam rau qhov nyuaj ntawm tag nrho cov txheej txheem tsim khoom, thiab ncaj qha cuam tshuam cov khoom tseem ceeb ntawm lub cev thiab txhua yam khoom ntawm vulcanized roj hmab thiab usability ntawm cov khoom. Yog hais tias lub plasticity ntawm raw roj hmab yog siab dhau lawm, nws yuav txo tau lub cev thiab mechanical zog ntawm vulcanized roj hmab. Yog tias cov yas ntawm cov roj hmab nyoos tsawg dhau, nws yuav ua rau muaj teeb meem hauv cov txheej txheem tom ntej, ua rau nws nyuaj rau kev sib xyaw cov khoom siv roj hmab sib npaug. Thaum lub sij hawm dov, qhov saum npoo ntawm cov khoom semi-tiav tsis du thiab lub shrinkage tus nqi yog loj, ua rau nws nyuaj rau tuav qhov loj ntawm cov khoom semi-tiav. Thaum lub sij hawm dov, cov khoom siv roj hmab kuj nyuaj rau rub mus rau hauv cov ntaub, ua rau muaj tshwm sim xws li tev ntawm cov hlua khi hlua khi ntaub, zoo heev txo cov adhesion ntawm cov khaubncaws sab nraud povtseg ntawm cov ntaub. Kev tsis sib xws ntawm plasticity tuaj yeem ua rau cov txheej txheem tsis sib xws thiab lub cev muaj zog ntawm cov khoom siv roj hmab, thiab tseem cuam tshuam rau kev ua haujlwm tsis zoo ntawm cov khoom. Yog li ntawd, mastering lub plasticity ntawm raw roj hmab kom raug yog ib qho teeb meem uas yuav tsis raug ignored.
5. Lub hom phiaj ntawm kev sib tov yog dab tsi
Kev sib xyaw yog cov txheej txheem ntawm kev sib xyaw cov roj hmab nyoos thiab ntau yam khoom siv ntxiv ua ke los ntawm cov khoom siv roj hmab raws li qhov kev faib ua feem ntawm cov khoom siv ntxiv tau teev tseg hauv cov khoom siv roj hmab, thiab xyuas kom meej tias tag nrho cov additives sib npaug sib npaug hauv cov roj hmab nyoos. Lub hom phiaj ntawm kev sib xyaw cov khoom siv roj hmab yog kom tau txais cov cim qhia txog lub cev thiab kev ua haujlwm zoo ib yam uas ua tau raws li cov qauv qhia, txhawm rau pab txhawb cov txheej txheem kev ua haujlwm thiab ua kom cov khoom zoo ntawm cov khoom tiav.
6. Vim li cas cov khoom sib xyaw ua ke ua ke
Yog vim li cas rau lub caking ntawm cov compounding tus neeg saib xyuas yog: tsis txaus cov yas sib tov ntawm raw roj hmab, yob loj heev sib nrug, siab yob kub heev, loj heev kua nplaum loading peev xwm, coarse hais los yog caking tshuaj muaj nyob rau hauv hmoov compounding agent, gel, thiab lwm yam. Txoj kev txhim kho yog los txais yuav cov kev ntsuas tshwj xeeb raws li qhov xwm txheej tshwj xeeb: ua kom cov yas ua kom zoo, kho qhov sib txawv ntawm cov menyuam, txo qhov kub ntawm cov menyuam, thiab xyuam xim rau txoj kev pub mis; Kev ziab thiab tshuaj xyuas cov hmoov; Txiav yuav tsum tsim nyog thaum sib tov.
- Vim li cas cov pa roj carbon ntau ntau hauv cov khoom siv roj hmab ua rau muaj "kev cuam tshuam"
Lub npe hu ua "dilution effect" yog vim muaj cov pa roj carbon ntau ntau hauv cov roj hmab tsim, uas ua rau cov txheeb ze ntawm cov roj hmab txo qis, ua rau muaj kev sib raug zoo ntawm cov pa roj carbon dub thiab tsis muaj peev xwm tawg tau zoo hauv cov roj hmab. khoom. Qhov no yog hu ua "dilution effect". Vim muaj ntau cov pa roj carbon dub particle loj loj, roj hmab molecules tsis tuaj yeem nkag mus rau hauv cov pa roj carbon dub particle pawg, thiab kev sib cuam tshuam ntawm roj hmab thiab cov pa roj carbon dub raug txo qis, ua rau txo qis zog thiab qhov kev cia siab txhawb nqa tsis tuaj yeem ua tiav.
8. Dab tsi yog qhov cuam tshuam ntawm cov qauv ntawm carbon dub ntawm cov khoom ntawm cov khoom siv roj hmab
Cov pa roj carbon dub yog tsim los ntawm thermal decomposition ntawm hydrocarbon tebchaw. Thaum cov khoom siv raw yog cov pa roj carbon monoxide (uas yog tsim los ntawm fatty hydrocarbons), muaj rau lub nplhaib sib koom ua ke; Thaum cov khoom siv raw yog cov roj hnyav (nrog cov ntsiab lus siab ntawm cov pa roj carbon monoxide), lub nplhaib rau lub nplhaib uas muaj cov pa roj carbon ntau ntxiv dehydrogenated thiab condensed los ua ib qho polycyclic aromatic compound, yog li tsim ib hexagonal network qauv txheej ntawm carbon atoms. Cov txheej no sib tshooj 3-5 zaug thiab dhau los ua ib qho siv lead ua. Cov duab kheej kheej ntawm cov pa roj carbon dub yog amorphous muaju muaj li ntawm ob peb pawg ntawm cov muaju uas tsis muaj kev qhia tshwj xeeb. Muaj cov ntawv cog lus tsis pub dawb nyob ib puag ncig cov siv lead ua, uas ua rau cov pa roj carbon dub sib xyaw ua ke, tsim cov ceg me me ntawm cov lej sib txawv, uas yog hu ua cov qauv ntawm carbon dub.
Cov qauv ntawm carbon dub sib txawv nrog ntau txoj kev tsim khoom. Feem ntau, cov qauv ntawm cov txheej txheem rauv cov pa roj carbon dub yog siab dua li ntawm lub tank txheej txheem carbon dub, thiab cov qauv ntawm acetylene carbon dub yog siab tshaj. Tsis tas li ntawd, cov qauv ntawm carbon dub kuj raug cuam tshuam los ntawm cov khoom siv raw. Yog tias cov ntsiab lus ntawm cov pa roj carbon monoxide cov ntsiab lus ntawm cov khoom siv raw yog siab, cov qauv ntawm cov pa roj carbon dub yog siab dua, thiab cov txiaj ntsig tau siab dua; Ntawm qhov tsis sib xws, cov qauv qis thiab cov txiaj ntsig tau qis. Qhov me me ntawm txoj kab uas hla ntawm cov pa roj carbon dub, qhov ntau dua cov qauv. Nyob rau hauv tib lub particle loj ntau, tus qauv siab dua, nws yooj yim dua rau extrude, thiab qhov chaw ntawm cov khoom extruded yog du nrog tsawg shrinkage. Cov qauv ntawm cov pa roj carbon dub tuaj yeem ntsuas los ntawm nws cov nqi nqus roj. Thaum lub particle loj yog tib yam, ib tug high oil absorption tus nqi qhia ib tug high qauv, thaum lub opposite qhia ib tug tsawg qauv. Cov txheej txheem siab carbon dub yog qhov nyuaj rau disperse nyob rau hauv hluavtaws roj hmab, tab sis mos hluavtaws roj hmab yuav tsum siab modulus carbon dub los txhim kho nws lub zog. Fine particle high structured carbon dub tuaj yeem txhim kho qhov hnav tsis kam ntawm tread rubber. Qhov zoo ntawm cov qauv qis carbon dub yog lub zog tensile siab, siab elongation, tsis tshua muaj zog tensile, tsis tshua muaj zog, cov khoom siv roj hmab muag, thiab cov khoom siv hluav taws xob tsawg. Txawm li cas los xij, nws qhov hnav tsis kam yog qhov phem dua li cov qauv siab carbon dub nrog tib qhov loj me.
- Vim li cas cov pa roj carbon dub cuam tshuam qhov kev ua tau zoo ntawm cov khoom siv roj hmab
Kev cuam tshuam ntawm cov qauv ntawm cov pa roj carbon dub rau lub sijhawm scorching ntawm cov khoom siv roj hmab: cov qauv tsim thiab lub sijhawm luv luv; Qhov me me qhov me me ntawm cov pa roj carbon dub, lub sijhawm coking luv dua. Cov nyhuv ntawm cov khoom ntawm cov pa roj carbon dub ntawm coking: feem ntau yog hais txog cov ntsiab lus oxygen ntawm cov pa roj carbon dub, uas muaj cov ntsiab lus oxygen siab, pH qis, thiab acidic, xws li qhov dub, uas muaj coking ntev dua. sij hawm. Cov nyhuv ntawm cov pa roj carbon dub rau lub sij hawm scorching: ib tug loj npaum li cas yuav txo tau lub sij hawm scorching vim qhov nce ntawm cov pa roj carbon dub generates khi roj hmab, uas muaj ib tug nyiam txhawb scorching. Cov nyhuv ntawm carbon dub ntawm lub Mooney scorch lub sij hawm ntawm cov ntaub ntawv roj hmab sib txawv nyob rau hauv txawv vulcanization systems.
10. Thawj theem yog dab tsi thiab dab tsi yog qhov thib ob theem sib tov
Ib theem sib xyaw yog cov txheej txheem ntawm kev ntxiv cov yas sib xyaw thiab ntau yam khoom ntxiv (rau qee cov khoom siv ntxiv uas tsis yooj yim tawg lossis siv me me, lawv tuaj yeem ua ua ntej rau hauv masterbatch) ib los ntawm ib qho raws li cov txheej txheem yuav tsum tau ua. Ntawd yog, cov masterbatch yog sib xyaw rau hauv ib qho khoom siv sab hauv, thiab tom qab ntawd cov tshuaj sulfur lossis lwm cov vulcanizing cov neeg ua haujlwm, nrog rau qee qhov super accelerators uas tsis tsim nyog ntxiv rau hauv cov khoom siv sab hauv, ntxiv rau cov ntsiav tshuaj xovxwm. Nyob rau hauv luv luv, ib tug mixing txheej txheem yog ua tiav nyob rau hauv ib tug mus tsis muaj nres nyob rau hauv nruab nrab.
Qhov thib ob theem sib xyaw yog hais txog cov txheej txheem sib xyaw ua ke ntau yam khoom ntxiv, tshwj tsis yog cov neeg ua haujlwm vulcanizing thiab super accelerators, nrog cov roj hmab nyoos los tsim cov roj hmab hauv paus. Qhov qis dua yog txias thiab nres rau qee lub sijhawm, thiab tom qab ntawd kev ua haujlwm ntxiv yog nqa tawm ntawm cov khoom siv sab hauv lossis qhib zeb txhawm rau ntxiv cov tshuaj vulcanizing.
11. Vim li cas cov yeeb yaj kiab yuav tsum tau txias ua ntej lawv tuaj yeem khaws cia
Qhov kub ntawm zaj duab xis txiav tawm los ntawm cov ntsiav tshuaj xovxwm yog siab heev. Yog tias nws tsis txias tam sim ntawd, nws yog ib qho yooj yim los tsim cov vulcanization thaum ntxov thiab cov nplaum, ua rau muaj teeb meem rau cov txheej txheem tom ntej. Peb lub Hoobkas los ntawm cov ntsiav tshuaj xovxwm, thiab los ntawm cov yeeb yaj kiab txias, nws yog immersed nyob rau hauv kev sib cais tus neeg sawv cev, tshuab ziab khaub ncaws, thiab hlais rau lub hom phiaj no. Qhov kev ua kom txias dav dav yog kom txias cov yeeb yaj kiab kom qis dua 45℃, thiab lub sij hawm cia ntawm cov nplaum yuav tsum tsis txhob ntev dhau, txwv tsis pub nws yuav ua rau cov nplaum pleev xim.
- Vim li cas thiaj tswj tau qhov kub ntawm cov sulfur ntxiv hauv qab 100℃
Qhov no yog vim hais tias thaum twg sulfur thiab accelerator ntxiv rau cov khoom siv roj hmab sib xyaw, yog tias qhov kub siab tshaj 100℃, nws yog ib qho yooj yim ua rau vulcanization thaum ntxov (xws li scorching) ntawm cov khoom siv roj hmab. Tsis tas li ntawd, sulfur dissolves nyob rau hauv cov roj hmab ntawm qhov kub thiab txias, thiab tom qab txias, sulfur condenses nyob rau saum npoo ntawm cov khoom siv roj hmab, ua rau Frost thiab uneven dispersion ntawm sulfur.
- Vim li cas cov yeeb yaj kiab sib xyaw yuav tsum tau nres rau qee lub sijhawm ua ntej lawv tuaj yeem siv tau
Lub hom phiaj ntawm kev khaws cov ntaub ntawv sib xyaw roj hmab tom qab txias yog ob npaug: (1) kom rov ua kom qaug zog ntawm cov khoom siv roj hmab thiab so cov neeg kho tshuab kev ntxhov siab thaum sib tov; (2) Txo qhov shrinkage ntawm cov khoom nplaum; (3) Txuas ntxiv mus rau diffuse tus neeg sawv cev sib xyaw thaum lub sijhawm nres tsheb, txhawb kev sib cais tsis sib xws; (4) Txuas ntxiv tsim cov roj hmab sib txuas ntawm cov roj hmab thiab cov pa roj carbon dub los txhim kho cov txiaj ntsig ntxiv.
14. Vim li cas thiaj li yuav tsum tau ua nruj me ntsis kom siv cov segmented dosing thiab pressurization lub sij hawm
Cov koob tshuaj ib ntus thiab lub sij hawm siab zog yog qhov tseem ceeb cuam tshuam rau kev sib xyaw kom zoo. Segmented dosing tuaj yeem txhim kho kev sib xyaw ua haujlwm thiab ua kom muaj kev sib txig sib luag, thiab muaj cov kev cai tshwj xeeb rau kev noj cov tshuaj ua ntu zus ntawm qee yam tshuaj, xws li: kua softeners yuav tsum tsis txhob muab ntxiv rau tib lub sijhawm li carbon dub kom tsis txhob agglomeration. Yog li ntawd, yuav tsum nruj me ntsis siv segmented dosing. Yog tias lub sij hawm siab luv luv, cov roj hmab thiab cov tshuaj tsis tuaj yeem rubbed thiab kneaded, ua rau tsis sib xws; Yog hais tias lub sij hawm pressurization ntev dhau lawm thiab qhov sib tov ntawm chav tsev kub siab heev, nws yuav cuam tshuam rau qhov zoo thiab kuj txo efficiency. Yog li ntawd, lub sij hawm pressurization yuav tsum nruj me ntsis tswj.
15. Dab tsi yog qhov cuam tshuam ntawm kev ntim cov peev txheej ntawm qhov zoo ntawm cov khoom sib xyaw thiab cov roj hmab yas
Lub peev xwm filling yog hais txog qhov muaj peev xwm sib xyaw ntawm cov khoom siv sab hauv, uas feem ntau tsuas yog suav txog 50-60% ntawm tag nrho cov chav sib xyaw ua ke ntawm cov khoom siv sab hauv. Yog tias lub peev xwm loj dhau, tsis muaj qhov sib txawv txaus hauv kev sib xyaw, thiab kev sib xyaw txaus tsis tuaj yeem nqa tawm, ua rau kev sib xyaw tsis sib xws; Qhov kub nce tuaj yeem ua rau nws tus kheej vulcanization ntawm cov khoom siv roj hmab; Nws kuj tuaj yeem ua rau lub cev muaj zog ntau dhau. Yog tias lub peev xwm me me dhau lawm, tsis muaj kev sib txhuam txaus ntawm cov rotors, uas ua rau idling thiab tsis sib xws, uas cuam tshuam rau qhov zoo ntawm cov roj hmab sib xyaw thiab kuj txo cov khoom siv.
- Vim li cas cov kua softeners yuav tsum tau ntxiv thaum kawg thaum sib xyaw cov khoom siv roj hmab
Thaum sib tov cov ntaub ntawv roj hmab, yog tias cov kua softeners ntxiv ua ntej, nws yuav ua rau muaj kev nthuav dav ntawm cov roj hmab nyoos thiab cuam tshuam rau kev sib txhuam ntawm cov roj hmab molecules thiab cov fillers, txo qhov sib tov ceev ntawm cov khoom siv roj hmab, thiab tseem ua rau tsis sib xws thiab txawm tias agglomeration. ntawm hmoov. Yog li thaum sib tov, kua softeners feem ntau yog ntxiv zaum kawg.
17. Vim li cas cov khoom siv roj hmab sib xyaw "tus kheej sulfurize" tom qab tau tso tseg rau lub sijhawm ntev
Cov laj thawj tseem ceeb ntawm qhov tshwm sim ntawm "tus kheej sulfur" thaum muab cov khoom siv roj hmab sib xyaw yog: (1) siv ntau cov tshuaj vulcanizing thiab accelerators; (2) Cov roj hmab loj thauj khoom muaj peev xwm, siab kub ntawm cov roj hmab refining tshuab, tsis txaus zaj duab xis txias; (3) Los yog ntxiv cov sulfur ntxov dhau, qhov tsis sib xws ntawm cov khoom siv tshuaj ua rau hauv zos concentration ntawm cov tshuaj accelerators thiab sulfur; (4) Qhov chaw nres tsheb tsis raug, xws li qhov kub thiab txias thiab cua tsis zoo nyob rau hauv qhov chaw nres tsheb.
18. Vim li cas cov khoom siv roj hmab sib xyaw hauv cov khoom sib tov yuav tsum muaj qee qhov cua siab
Thaum sib tov, ntxiv rau qhov muaj cov roj hmab nyoos thiab cov khoom siv tshuaj hauv cov khoom sib xyaw ntawm cov khoom siv sab hauv, kuj tseem muaj ntau qhov sib txawv. Yog tias qhov siab tsis txaus, cov roj hmab nyoos thiab cov khoom siv tshuaj tsis tuaj yeem rubbed thiab kneaded txaus, ua rau tsis sib xws; Tom qab nce siab, cov khoom siv roj hmab yuav raug kev sib txhuam thiab kneading nce, nqis, sab laug, thiab sab xis, ua rau cov roj hmab nyoos thiab cov khoom sib xyaw ua ke sai thiab sib npaug. Hauv kev xav, qhov siab dua, qhov zoo dua. Txawm li cas los xij, vim muaj kev txwv hauv cov khoom siv thiab lwm yam, qhov tseeb siab tsis tuaj yeem txwv tsis pub. Feem ntau hais lus, cua siab ntawm ib ncig ntawm 6Kg / cm2 zoo dua.
- Vim li cas ob lub rollers ntawm lub tshuab qhib roj hmab sib xyaw yuav tsum muaj qhov sib piv ceev
Lub hom phiaj ntawm kev tsim qhov sib piv ceev rau lub tshuab qhib roj hmab refining yog txhawm rau txhim kho cov nyhuv shear, tsim kom muaj kev sib txhuam thiab cov saw hlau molecular tawg ntawm cov khoom siv roj hmab, thiab txhawb cov dispersion ntawm tus neeg sawv cev sib tov. Tsis tas li ntawd, qhov qeeb qeeb qeeb qeeb yog qhov zoo rau kev ua haujlwm thiab kev ruaj ntseg ntau lawm.
- Vim li cas cov khoom siv sab hauv tsim thallium suav nrog phenomenon
Feem ntau muaj peb qhov laj thawj rau kev suav nrog thallium hauv cov khoom sib tov: (1) muaj teeb meem nrog cov cuab yeej siv nws tus kheej, xws li cov pa tawm los ntawm cov ntsia liaj qhov rooj sab saum toj, (2) cua tsis txaus, thiab (3) kev ua haujlwm tsis zoo, xws li tsis xyuam xim thaum ntxiv softeners, feem ntau ua rau cov nplaum lo rau saum lub ntsia liaj qhov rooj thiab phab ntsa ntawm lub tov khoom chamber. Yog tias tsis ntxuav hauv lub sijhawm, nws yuav cuam tshuam.
21. Vim li cas cov yeeb yaj kiab sib xyaw ua kom sib xyaw thiab tawg
Vim tsis saib xyuas thaum sib tov, nws feem ntau disperses vim yog vim li cas, feem ntau suav nrog: (1) ua txhaum cov koob tshuaj raws li teev nyob rau hauv cov txheej txheem kev cai los yog ntxiv sai heev; (2) Qhov kub hauv chav sib tov yog tsawg dhau thaum sib tov; (3) Ntau npaum li cas ntawm fillers nyob rau hauv cov mis yog ua tau. Vim kev sib xyaw tsis zoo, cov khoom siv roj hmab tau crushed thiab dispersed. Cov khoom siv roj hmab dispersed yuav tsum tau ntxiv nrog tib qib ntawm cov yas compound lossis niam roj hmab, thiab tom qab ntawd raug kev kho mob tom qab compressed thiab tawm.
22. Vim li cas thiaj yuav tsum tau qhia qhov kev txiav txim ntawm kev noj tshuaj
Lub hom phiaj ntawm kev txhaj tshuaj yog txhawm rau txhim kho kev ua haujlwm ntawm cov roj hmab sib xyaw thiab ua kom zoo ntawm cov khoom siv roj hmab sib xyaw. Feem ntau hais lus, qhov kev txiav txim ntawm kev ntxiv cov tshuaj yog raws li nram no: (1) Ntxiv cov yas kom soften cov roj hmab, ua rau nws yooj yim rau tov nrog cov compounding agent. (2) Ntxiv cov tshuaj me me xws li zinc oxide, stearic acid, accelerators, anti-aging agents, thiab lwm yam. Cov no yog cov khoom tseem ceeb ntawm cov khoom nplaum. Ua ntej, ntxiv rau lawv kom lawv tuaj yeem sib npaug ntawm cov khoom siv nplaum. (3) Cov pa roj carbon dub lossis lwm cov khoom ntim xws li av nplaum, calcium carbonate, thiab lwm yam. (4) Cov kua nplaum thiab cov roj hmab o tuaj yeem ua rau cov pa roj carbon dub thiab roj hmab sib tov yooj yim. Yog tias qhov kev txhaj tshuaj tsis ua raws li (tshwj tsis yog cov qauv nrog cov kev cai tshwj xeeb), nws yuav cuam tshuam rau qhov zoo ntawm cov khoom siv roj hmab sib xyaw.
23. Vim li cas thiaj muaj ntau hom roj hmab nyoos siv ua ke hauv tib lub mis
Nrog rau txoj kev loj hlob ntawm cov khoom siv raw hauv kev lag luam roj hmab, ntau yam khoom siv roj hmab yog nce. Txhawm rau txhim kho lub cev thiab lub zog ntawm cov roj hmab thiab cov roj hmab vulcanized, txhim kho kev ua haujlwm ntawm cov roj hmab, thiab txo cov nqi ntawm cov khoom siv roj hmab, ntau hom roj hmab nyoos feem ntau siv rau tib lub mis.
24. Vim li cas cov khoom siv roj hmab ua cov yas siab lossis qis qis
Lub ntsiab yog vim li cas rau qhov teeb meem no yog hais tias lub plasticity ntawm cov yas compound tsis tsim nyog; Lub sij hawm sib tov ntev dhau los yog luv dhau; Kev sib xyaw kub tsis raug; Thiab cov kua nplaum tsis zoo sib xyaw; Ntau dhau los yog tsis txaus ntxiv ntawm plasticizers; Cov pa roj carbon dub tuaj yeem tsim los ntawm kev ntxiv me me lossis siv ntau yam tsis raug. Txoj kev txhim kho yog kom tsim nyog tuav lub plasticity ntawm cov yas compound, tswj lub sijhawm sib xyaw thiab kub, thiab sib tov cov roj hmab sib npaug. Tus neeg sawv cev sib tov yuav tsum raug ntsuas kom raug thiab tshuaj xyuas.
25. Vim li cas cov khoom siv roj hmab sib xyaw ua kom muaj qhov sib nqus tshwj xeeb uas loj dhau lossis me dhau
Cov laj thawj rau qhov no suav nrog qhov tsis raug qhov hnyav ntawm qhov sib xyaw ua ke, kev tso tseg, thiab tsis sib haum. Yog tias cov pa roj carbon dub, zinc oxide, thiab calcium carbonate ntau tshaj li qhov tau teev tseg thaum cov roj hmab nyoos, roj plasticizers, thiab lwm yam tsawg dua li qhov tau teev tseg, yuav muaj cov xwm txheej tshwj xeeb ntawm lub ntiajteb txawj nqus ntawm cov khoom siv roj hmab. tus nqi teev. Ntawm qhov tsis sib xws, qhov tshwm sim kuj yog qhov txawv. Tsis tas li ntawd, thaum lub sij hawm sib xyaw ntawm cov khoom siv roj hmab, cov hmoov av ntau dhau los yog lo rau ntawm phab ntsa ntim (xws li ntawm lub thawv tshuaj me me), thiab tsis ua rau cov khoom siv ntxiv tag nrho tuaj yeem ua rau lub ntiajteb txawj nqus ntawm cov khoom siv roj hmab ib yam nkaus. siab lossis qis dhau. Txoj kev txhim kho yog los xyuas seb puas muaj qhov tsis raug ntawm qhov hnyav thaum lub sij hawm sib tov, ntxiv dag zog rau kev ua haujlwm, thiab tiv thaiv cov hmoov ya thiab xyuas kom meej txawm tias sib xyaw ntawm cov khoom siv roj hmab.
26. Vim li cas lub hardness ntawm cov khoom siv roj hmab sib xyaw ua kom siab dhau lossis qis dhau
Lub ntsiab yog vim li cas rau qhov siab lossis qis hardness ntawm cov khoom siv roj hmab yog qhov tsis raug ntawm qhov hnyav ntawm tus neeg sawv cev sib xyaw, xws li qhov hnyav ntawm tus neeg sawv cev vulcanizing, tus neeg sawv cev txhawb zog, thiab accelerator yog siab dua qhov ntau npaum li cas ntawm cov mis, uas ua rau ultra- siab hardness ntawm vulcanized roj hmab; Ntawm qhov tsis sib xws, yog tias qhov hnyav ntawm cov roj hmab thiab cov yas yas ntau tshaj li qhov tau teev tseg hauv cov mis, los yog qhov hnyav ntawm cov tshuaj tiv thaiv, cov tshuaj vulcanizing, thiab cov accelerators tsawg dua li cov lus qhia hauv cov mis, nws yuav ua rau tsis muaj zog ntawm cov khoom siv. vulcanized roj hmab khoom. Nws cov kev txhim kho kev ntsuas yog tib yam li kev kov yeej qhov zoo ntawm plasticity fluctuations. Tsis tas li ntawd, tom qab ntxiv cov sulfur, kev sib tsoo tsis sib xws kuj tuaj yeem ua rau muaj qhov sib txawv ntawm qhov tawv (hauv zos loj dhau lossis me dhau).
27. Vim li cas cov khoom siv roj hmab muaj qhov pib vulcanization qeeb
Lub ntsiab yog vim li cas rau qhov qeeb vulcanization pib taw tes ntawm cov ntaub ntawv roj hmab yog vim qhov tsawg tshaj li qhov teev ntawm accelerator raug hnyav, los yog omission ntawm zinc oxide los yog stearic acid thaum sib tov; Qhov thib ob, qhov tsis ncaj ncees lawm ntawm cov pa roj carbon dub tuaj yeem ua rau qeeb hauv vulcanization tus nqi ntawm cov khoom siv roj hmab. Kev txhim kho kev ntsuas suav nrog ntxiv dag zog rau peb qhov kev tshuaj ntsuam xyuas thiab ntsuas cov khoom siv tshuaj kom raug.
28. Vim li cas cov khoom siv roj hmab tsim cov sulfur tsis txaus
Qhov tshwm sim ntawm sulfur deficiency nyob rau hauv cov ntaub ntawv roj hmab yog feem ntau yog tshwm sim los ntawm ploj los yog tsis txaus ua ke ntawm accelerators, vulcanizing agents, thiab zinc oxide. Txawm li cas los xij, kev sib xyaw ua haujlwm tsis raug thiab cov hmoov ya ntau dhau kuj tuaj yeem ua rau cov khoom tsis muaj sulfur hauv cov khoom siv roj hmab. Kev txhim kho kev ntsuas yog: ntxiv rau kev ua tiav qhov hnyav, ntxiv dag zog rau peb qhov kev soj ntsuam, thiab zam cov khoom xyaw uas ploj lawm lossis tsis sib haum, nws tseem yuav tsum tau ntxiv dag zog rau cov txheej txheem sib xyaw ua haujlwm thiab tiv thaiv ntau cov hmoov los ntawm ya thiab poob.
29. Yog vim li cas lub cev thiab txhua yam khoom ntawm cov khoom siv roj hmab sib xyaw tsis sib xws
Qhov hnyav ntawm tus neeg sawv cev tsis raug yog vim qhov tsis muaj lossis tsis sib haum nrog cov khoom siv ntxiv, vulcanizing agents, thiab accelerators, uas tuaj yeem cuam tshuam rau lub cev thiab txhua yam khoom ntawm vulcanized roj hmab compound. Qhov thib ob, yog tias lub sijhawm sib tov ntev dhau lawm, qhov kev sib xyaw ua ke yog tsis tsim nyog, thiab qhov sib tov tsis sib xws, nws tuaj yeem ua rau lub cev thiab cov khoom siv ntawm cov roj hmab vulcanized tsis tsim nyog. Ua ntej, kev ntsuas yuav tsum tau ua kom muaj zog precision craftsmanship, siv peb qhov kev tshuaj ntsuam xyuas, thiab tiv thaiv kev tsis ncaj ncees los yog tsis xa cov khoom siv tshuaj. Txawm li cas los xij, rau cov khoom siv roj hmab uas tsis zoo, kev ua haujlwm ntxiv lossis kev koom ua ke rau hauv cov khoom siv roj hmab tsim nyog yog qhov tsim nyog.
30. Vim li cas cov khoom siv roj hmab ua kom kub hnyiab
Cov laj thawj rau kev kub hnyiab ntawm cov ntaub ntawv roj hmab tuaj yeem raug sau tseg raws li hauv qab no: cov qauv tsim tsis tsim nyog, xws li kev siv cov vulcanizing cov neeg ua haujlwm ntau dhau thiab cov accelerators; Roj hmab loading muaj peev xwm ntau dhau, kev ua haujlwm tsis zoo ntawm cov roj hmab sib xyaw, xws li kev kub siab ntawm cov roj hmab sib xyaw tshuab, tsis txaus cua txias tom qab unloading, kev sib ntxiv ntawm cov leej faj los yog tsis sib xws, uas ua rau muaj kev kub ntxhov ntawm cov tshuaj vulcanizing thiab accelerators; Kev khaws cia yam tsis muaj qhov txias txias, ntau dhau dov lossis lub sijhawm cia ntev tuaj yeem ua rau kub hnyiab ntawm cov khoom nplaum.
31. Yuav ua li cas tiv thaiv scorch ntawm cov khoom siv roj hmab
Tiv thaiv coking feem ntau yog siv cov kev ntsuas coj los daws qhov ua rau coking.
(1) Txhawm rau tiv thaiv scorching, xws li nruj me ntsis tswj qhov sib tov kub, tshwj xeeb tshaj yog cov sulfur ntxiv kub, txhim kho cov cua txias, ntxiv cov ntaub ntawv raws li qhov kev txiav txim teev nyob rau hauv cov txheej txheem specifications, thiab ntxiv dag zog rau kev tswj cov khoom siv roj hmab.
(2) Kho cov txheej txheem vulcanization hauv cov qauv thiab ntxiv cov tshuaj tiv thaiv coking tsim nyog.
32. Yog vim li cas ntxiv 1-1.5% stearic acid los yog roj thaum soj ntsuam nrog cov khoom siv roj hmab nrog qib siab ntawm kev kub hnyiab
Rau cov khoom siv roj hmab nrog lub teeb kub kub, nyias dhau (cov menyuam suab 1-1.5 hli, cov menyuam kub hauv qab 45℃) 4-6 zaug ntawm qhov qhib zeb, nres rau 24 teev, thiab sib tov rau hauv cov khoom siv zoo. Cov koob tshuaj yuav tsum tau tswj qis dua 20%. Txawm li cas los xij, rau cov khoom siv roj hmab nrog cov qib siab ntawm scorching, muaj ntau vulcanization bonds hauv cov khoom siv roj hmab. Ntxiv 1-1.5% stearic acid tuaj yeem ua rau cov khoom siv roj hmab kom o thiab ua kom muaj kev puas tsuaj ntawm cov qauv sib txuas. Txawm tias tom qab kev kho mob, qhov kev faib ua feem ntawm cov roj hmab no ntxiv rau cov khoom siv roj hmab zoo yuav tsum tsis pub tshaj 10% Ntawm qhov tod tes, rau qee cov khoom siv roj hmab hnyav heev, ntxiv rau kev ntxiv stearic acid, 2-3% roj softeners yuav tsum tau ntxiv kom tsim nyog. pab o. Tom qab kev kho mob, lawv tsuas tuaj yeem txo qis rau kev siv. Raws li rau cov khoom siv roj hmab uas muaj kev kub ntxhov hnyav dua, nws tsis tuaj yeem ua tiav ncaj qha thiab tsuas yog siv los ua cov khoom siv raw rau cov roj hmab rov qab.
33. Vim li cas cov khoom siv roj hmab yuav tsum tau khaws cia rau ntawm cov hlau phaj
Yas thiab sib xyaw roj hmab yog mos heev. Yog hais tias muab tso rau hauv av casually, cov khib nyiab xws li xuab zeb, gravel, av, thiab ntoo chips tuaj yeem yooj yim lo rau cov khoom siv roj hmab, ua rau nws nyuaj rau kev ntes. Kev sib xyaw ua ke tuaj yeem txo qhov zoo ntawm cov khoom, tshwj xeeb tshaj yog rau qee cov khoom nyias, uas ua rau tuag taus. Yog tias cov khib nyiab hlau sib xyaw ua ke, nws tuaj yeem ua rau cov khoom siv sib tsoo. Yog li cov khoom siv nplaum yuav tsum tau muab khaws cia rau ntawm daim hlau tshwj xeeb thiab khaws cia rau hauv qhov chaw xaiv.
34. Vim li cas cov yas ntawm cov roj hmab sib xyaw qee zaum sib txawv heev
Muaj ntau yam cuam tshuam rau kev hloov pauv ntawm plasticity ntawm cov roj hmab sib xyaw, feem ntau suav nrog: (1) cov qauv tsis sib xws ntawm cov roj hmab yas; (2) Kev ua kom tsis zoo ntawm cov yas sib xyaw thaum sib xyaw; (3) Qhov ntau ntawm softeners tsis raug; (4) Lub ntsiab ntsuas los daws cov teeb meem saum toj no yog ua raws li cov txheej txheem kev cai nruj me ntsis thiab ua tib zoo saib xyuas cov ntawv ceeb toom kev hloov pauv ntawm cov khoom siv raw, tshwj xeeb tshaj yog cov kev hloov ntawm cov roj hmab nyoos thiab cov roj carbon dub.
35. Vim li cas nyias dhau rov qab sib xyaw tsim nyog tom qab cov roj hmab sib xyaw yog tawm los ntawm cov khoom siv sab hauv
Qhov kub ntawm cov khoom siv roj hmab tawm los ntawm cov khoom siv sab hauv yog feem ntau siab dua 125℃, thaum qhov kub rau ntxiv sulfur yuav tsum qis dua 100℃. Yuav kom txo tau qhov kub thiab txias ntawm cov khoom siv roj hmab, nws yog ib qho tsim nyog yuav tsum tau rov qab muab cov khoom siv roj hmab rov qab thiab ua haujlwm ntawm kev ntxiv cov sulfur thiab accelerator.
36. Cov teeb meem dab tsi yuav tsum tau muab sau tseg thaum lub sij hawm ua tiav ntawm kev siv cov nplaum sulfur uas tsis muaj kuab lom
Insoluble sulfur tsis ruaj tsis khov thiab tuaj yeem hloov mus rau hauv cov tshuaj soluble sulfur. Kev hloov dua siab tshiab yog qeeb qeeb ntawm chav tsev kub, tab sis nrawm nrog nce kub. Thaum nws nce mus txog 110℃, nws tuaj yeem hloov mus rau cov sulfur zoo tib yam li ntawm 10-20 feeb. Yog li ntawd, cov sulfur no yuav tsum tau khaws cia ntawm qhov qis tshaj qhov ua tau. Thaum lub sij hawm ua cov khoom xyaw, yuav tsum tau saib xyuas kom muaj qhov kub thiab txias (hauv qab 100℃) tiv thaiv nws los ntawm kev hloov mus rau hauv cov tshuaj sulfur. Insoluble sulfur, vim nws insolubility nyob rau hauv roj hmab, feem ntau nyuaj rau uniformly disperse, thiab yuav tsum tau muab txaus mloog nyob rau hauv tus txheej txheem. Insoluble sulfur tsuas yog siv los hloov cov tshuaj soluble sulfur, tsis hloov cov txheej txheem vulcanization thiab cov khoom ntawm cov roj hmab vulcanized. Yog li ntawd, yog tias qhov kub thiab txias heev thaum lub sijhawm txheej txheem, lossis yog tias nws khaws cia rau lub sijhawm ntev ntawm qhov kub thiab txias, ces siv nws tsis muaj qab hau.
37. Yog vim li cas sodium oleate siv nyob rau hauv zaj duab xis txias tshuab yuav tsum tau circulated
Tus neeg sawv cev cais sodium oleate siv nyob rau hauv lub tank dej txias ntawm cov yeeb yaj kiab txias, vim kev ua haujlwm tas mus li, cov yeeb yaj kiab los ntawm cov ntsiav tshuaj xovxwm tsis tu ncua khaws cov cua sov hauv sodium oleate, uas yuav ua rau nws qhov kub thiab txias sai thiab tsis ua tiav. lub hom phiaj ua kom txias zaj duab xis. Yuav kom txo tau nws qhov kub thiab txias, nws yog ib qho tsim nyog yuav tsum tau ua kom tiav cyclic txias, tsuas yog nyob rau hauv txoj kev no tuaj yeem ua kom txias thiab cais tawm ntawm cov khoom siv cua txias kom zoo dua.
38. Yog vim li cas ib tug neeg kho tshuab cov menyuam yog zoo dua li ib tug hluav taws xob cov menyuam rau zaj duab xis txias li
Cov cuab yeej ua yeeb yaj kiab txias tau pib sim nrog lub tshuab hluav taws xob cua sov cov menyuam, uas muaj cov qauv tsim thiab kev saib xyuas nyuaj. Cov khoom siv roj hmab ntawm ntug txiav yog qhov ua rau vulcanization thaum ntxov, ua rau nws tsis zoo. Tom qab ntawd, cov cuab yeej siv tshuab tau siv rau kev saib xyuas thiab kho tau yooj yim, ua kom cov khoom zoo thiab kev nyab xeeb.
Post lub sij hawm: Apr-12-2024
