Henan Niujiao Industrial Co., Ltd.
Niujiao Chemical tshwj xeeb hauv kev muab ntau yam khoom siv tshuaj, tsom mus rau kev tshawb fawb thiab kev tsim kho, kev tsim khoom thiab kev lag luam ntawm ntau yam tshuaj raw cov ntaub ntawv thiab cov khoom lag luam, tso siab rau cov khoom zoo tshaj plaws xa tawm mus rau ntau tshaj li lub teb chaws thiab cheeb tsam.

Vim Li Cas Xaiv Peb

Ntau yam ntawm Additives

Peb muab ntau yam khoom siv roj hmab ntxiv, suav nrog cov tshuaj tua kab mob, tshuaj tua kab mob, thiab lwm yam. Peb cov khoom sib txawv ntawm cov khoom lag luam caters rau ntau yam roj hmab formulations thiab kev siv, muab kev daws teeb meem rau peb cov neeg siv khoom.

High-Quality Manufacturing

Peb cov chaw tsim khoom siv cov thev naus laus zis siab heev thiab ua raws li kev tswj hwm nruj nruj. Peb muab qhov tseem ceeb tshaj plaws hauv txhua kauj ruam ntawm cov txheej txheem tsim khoom, kom ntseeg tau tias cov khoom siv roj hmab ua tau zoo thiab ua tau raws li cov qauv thoob ntiaj teb.

Customization Muaj peev xwm

Peb nkag siab tias txhua tus neeg siv khoom yuav muaj cov kev cai tshwj xeeb. Peb muaj qhov yooj yim los kho peb cov roj hmab additives kom tau raws li cov kev xav tau tshwj xeeb, ua kom pom kev sib raug zoo thiab kev ua tau zoo hauv ntau daim ntawv thov roj hmab.

Tus nqi sib tw

Peb nkag siab txog qhov tseem ceeb ntawm kev siv nyiaj zoo hauv lub. Nrog rau kev ua tiav ntau yam thiab cov lus qhia tshwj xeeb, tus nqi zoo thiab cov kev pabcuam zoo, nws muaj lub koob npe nrov hauv kev ua lag luam, yeej ntau thiab ntau tus neeg siv khoom, thiab tau mus txog kev sib koom tes ntawm kev sib raug zoo.

149-30-4 Accelerator M 2-Mercaptobenzothiazole MBT(M)C7H5NS2

120-78-5 Accelerator MBTS(DM) 2,2'-Dithiobis(Benzothiazole) C14H8N2S4

1908-87-8 Accelerator MTT 3-Methylthiazolidine-2-Thione C4H7NS2

97-39-2 Di-O-Tolylguanidine Accelerator DOTG(DT) C15H17N3

102-08-9 Accelerator DPTU(CA) 1, 3-Diphenyl-2-Thiourea C13H12N2S

96-45-7 Vulcanization Accelerator ETU(NA-22) Ethylene Thiourea C3H6N2S

105-55-5 N,N'-Diethylthiourea Rubber Accelerator DETU C5H12N2S

109-46-6 Vulcanization Accelerator DBTU 1, 3-Dibutyl-2-Thiourea C9H20N2S

2055-46-1 3,4,5,6-TETRAHYDRO-2-PYRIMIDINETHIOL Accelerator PUR C4H8N2S

Tus cwj pwm ntawm Vulcanization Accelerator

Txhawb nqa kev ua tau zoo ntawm cov roj hmab vulcanization yog ib qho qauv tseem ceeb los ntsuas qhov zoo ntawm accelerator. Raws li cov ntaub ntawv, tus yam ntxwv ntawm accelerators nyob rau hauv tsev thiab txawv teb chaws yog tsuas yog ua los ntawm ob yam ntawm vulcanization txhawb cov yam ntxwv thiab lub cev thiab txhua yam khoom ntawm vulcanized roj hmab. Cov yam ntxwv tseem ceeb ntawm vulcanization nce qib yog vulcanization tus nqi, Mooney coke lub sij hawm, zoo vulcanization lub sij hawm, zoo vulcanization kub, vulcanization flatness thiab anti-vulcanization rov qab nyob rau hauv overvulcanization theem. Lub cev thiab txhua yam khoom ntawm vulcanized roj hmab yog tsuas yog tshawb xyuas nyob rau hauv cov nqe lus ntawm hardness, elasticity, tensile zog, kev sib txhuam zog thiab thermal aging zog. Txawm li cas los xij, nyob rau xyoo tas los no, ntau qhov kev tshawb fawb tau ua tiav ntawm kev cuam tshuam ntawm cov accelerators ntawm cov khoom siv hluav taws xob viscoelastic ntawm vulcanizates.

Qhov tseeb, qhov ua tau zoo ntawm cov accelerator yog nyob ntawm lub cev thiab lub zog ntawm lub vulcanizate nws imparts, thiab qhov xwm txheej ntawm kev sib txuas sib txuas hauv vulcanizate (hom thiab ntom) ua lub luag haujlwm txiav txim siab hauv nws daim ntawv thov thiab cov yam ntxwv ua haujlwm. Lub zog thiab dynamic mechanical zog ntawm vulcanized roj hmab tsis tsuas yog nyob ntawm cov khoom ntawm cov khoom siv polymer nws tus kheej, tab sis kuj ncaj qha cuam tshuam rau cov xov tooj ntawm cov kev txhawb nqa network hauv tag nrho cov kev sib txuas network (xa mus rau cov saw txuas ntawm ob lub ntsiab lus txuas). Lub crosslinking ceev txiav txim seb tus naj npawb ntawm kev txhawb nqa chains hauv lub network. Nws tau raug tshaj tawm [14] tias qhov hardness thiab qhov tsis tu ncua elongation kev nyuaj siab ntawm vulcanized roj hmab nce nrog qhov nce ntawm crosslinking ceev, thiab lub zog tsim kua muag, qaug zog lub neej, toughness thiab tensile lub zog pib nce nrog qhov nce ntawm crosslinking ceev, thiab tom qab ntawd txo qis. nrog rau qhov nce ntawm crosslinking ceev tom qab ncav cuag ib qho nqi siab tshaj plaws. Lub hysteresis thiab cov yam ntxwv mus tas li deformation txo nrog qhov nce ntawm crosslinking ceev.

Dab tsi yog Accelerator ntawm Vulcanization ntawm Roj Hmab?

Ib qho accelerator ntawm vulcanization ntawm roj hmab yog ib yam tshuaj uas ua rau kom tus nqi ntawm vulcanization, uas yog cov txheej txheem tshuaj uas koom nrog ntxiv sulfur rau roj hmab los tsim cross-links ntawm cov polymer chains. Accelerators ua kom qhov kev sib txuas ntawm cov tshuaj tiv thaiv no tsis muaj qhov nce qhov kub thiab txias xav tau rau vulcanization.

Muaj ntau chav kawm ntawm cov accelerators, suav nrog thioureas, sulfenamines, guanidine, thiab dithiocarbamates. Txhua chav kawm ua haujlwm los ntawm cov txheej txheem sib txawv los txhawb cov txheej txheem vulcanization. Piv txwv li:

- Thioureas, xws li N-cyclohexyl-2-benzothiazole sulfonamide (CBS) thiab N-tert-butyl-2-benzothiazole sulfonamide (MBTS), yog ib co ntawm cov feem ntau siv accelerators. Lawv cuam tshuam nrog sulfur los tsim cov radicals uas tuaj yeem ntxig lawv tus kheej mus rau hauv cov roj hmab polymer chains, yooj yim rau kev sib txuas.
- Sulfenamines, zoo li diphenylguanidine (DPG), kuj hnov mob nrog sulfur los tsim cov kab mob uas tuaj yeem koom nrog hauv cov txheej txheem vulcanization.

- Dithiocarbamates, piv txwv los ntawm tetramethylthiuram disulfide (TMTD), decompose kom tawm los sulfur thiab radical uas tuaj yeem koom nrog vulcanization cov tshuaj tiv thaiv.

Qhov kev xaiv ntawm accelerator nyob ntawm yam xws li hom roj hmab ua tiav, qhov xav tau tus nqi thiab qhov ntev ntawm vulcanization, thiab qhov kawg ntawm kev siv cov khoom siv roj hmab. Accelerators yog qhov tseem ceeb hauv kev ua tiav cov txiaj ntsig kho tau zoo thiab cov khoom kawg ntawm cov roj hmab vulcanized.

Lub luag haujlwm ntawm Accelerator hauv Vulcanization yog dab tsi?

Nyob rau hauv vulcanization, ib qho accelerator yog ib qho tshuaj sib xyaw ua ke uas pab txhawb thiab ua kom cov txheej txheem sib txuas ntawm cov khoom siv polymer ntawm cov roj hmab. Lub luag haujlwm tseem ceeb ntawm tus accelerator yog txo qis qhov kub ntawm vulcanizing thiab txo cov sij hawm uas yuav tsum tau ua kom tiav tag nrho kev sib txuas. Accelerators ua hauj lwm los ntawm reacting nrog cov sulfur (los yog lwm yam vulcanizing agents) thiab cov roj hmab polymer, yog li ua kom cov efficiency ntawm vulcanization cov tshuaj tiv thaiv.

Muaj ntau ntau chav kawm ntawm accelerators, txhua tus muaj ntau yam kev ua haujlwm:

Thioureas

Feem ntau hom accelerator, thioureas xws li CBS (N-cyclohexyl-2-benzothiazole sulfonamide), MBS (N-tert-butyl-2-} benzothiazole sulfonamide), thiab TBBS (tert-Butyl{{6}). }, 2-dithiobenzothiazole), teb nrog sulfur los tsim cov chaw ua haujlwm uas tuaj yeem tawm tsam cov hlua roj hmab.

Sulfenamines

Cov accelerators no muaj ib pab pawg sulfenamide (-NSO2R) reacts nrog sulfur los ua ib qho kev sib xyaw tshiab uas tuaj yeem tso nws tus kheej mus rau hauv cov saw roj hmab, uas ua rau kev sib txuas ntawm kev sib txuas.

Guanidines

Accelerators xws li DPG (diphenylguanidine) thiab TMTD (N-tert-butyl-2, 3-dihydro-2H-benzothiazole-4-}sulfenamide) ua haujlwm zoo ib yam li thioureas thiab sulfenamines los ntawm kev ua kom nquag plias. sulfur hom.

Zinc Oxide

Activators: Txawm hais tias tsis yog accelerators lawv tus kheej, cov tshuaj xws li zinc oxide (ZnO) yog siv los qhib qee yam ntawm cov accelerators, txhim kho lawv cov txiaj ntsig hauv cov txheej txheem vulcanization.

Accelerator xaiv nyob ntawm ntau yam xws li hom roj hmab ua vulcanized, cov khoom xav tau ntawm cov khoom kawg, thiab cov txheej txheem ua haujlwm. Accelerators yuav tsum tau xaiv kom zoo zoo kom tsis txhob muaj kev cuam tshuam sab nraud uas tuaj yeem ua rau vulcanization ntxov ntxov (scorching) lossis txo cov khoom siv roj hmab sib xyaw.

Kev siv cov accelerators kom zoo yog qhov tseem ceeb hauv kev ua tiav qhov kev sib npaug ntawm kev ua tau zoo, kho tus nqi, thiab qhov kawg ntawm lub cev ntawm cov roj hmab vulcanized.

Dynamic Vulcanization yog dab tsi?

Dynamic vulcanization, tseem hu ua nyob rau hauv situ vulcanization los yog reactive ua, yog ib tug txheej txheem siv nyob rau hauv lub manufacturing ntawm thermoplastic elastomers (TPEs). Nws suav nrog cov vulcanization ib txhij thiab melting ntawm thermoplastic thiab roj hmab tivthaiv. Cov txheej txheem no tso cai rau tsim cov khoom siv nrog ob qho tib si thermoplastic thiab elastomeric zog.

Thaum lub sij hawm dynamic vulcanization, cov roj hmab (feem ntau raws li ntuj roj hmab los yog hluavtaws polymers xws li styrene-butadiene roj hmab, SBR) yog ua ke nrog ib tug thermoplastic (xws li polypropylene, PP, los yog ethylene propylene diene monomer, EPDM) thiab vulcanizing agents (sulfur los yog sib npaug. tshuaj). Qhov sib tov yog ua tiav nyob rau hauv ib qho kev tov khoom los yog ntxaib-ntsia hlau extruder, qhov twg nws raug rau siab kub thiab shear rog.

Lub siab shear thiab kub pib muaj tshuaj lom neeg cov tshuaj tiv thaiv uas cross-links cov roj hmab tivthaiv thaum ib txhij melting cov thermoplastic. Qhov sib npaug ntawm qhov sib npaug no ua rau cov khoom siv uas nthuav tawm cov cwj pwm elastic zoo ib yam li cov roj hmab vulcanized ntawm chav tsev kub tab sis tuaj yeem ua tiav thiab rov ua dua tshiab zoo li thermoplastic.

Dynamic vulcanization tau yooj yim los ntawm kev sib ntxiv ntawm cov tshuaj tshwj xeeb, xws li peroxides lossis catalysts uas txhawb nqa cov kev sib txuas sib txuas ntawm qhov kub siab dua thaum ua tiav. Cov xwm txheej zoo-kub, sijhawm, thiab shear-yuav tsum tau ua tib zoo tswj kom ua kom zoo dua cov khoom siv, kom ntseeg tau tias cov roj hmab ua kom muaj kev sib txuas txaus yam tsis muaj kev puas tsuaj rau cov thermoplastic matrix.

Cov thev naus laus zis no muaj ntau qhov zoo dua li cov txheej txheem vulcanization ib txwm, suav nrog kev ua kom yooj yim dua, lub sijhawm voj voog nrawm dua hauv kev tsim khoom, thiab muaj peev xwm rov ua dua cov khoom siv tau yooj yim dua. Dynamic vulcanization ua rau kev tsim cov khoom siv nrog ntau yam kev siv, los ntawm cov khoom siv tsheb thiab cov hoses mus rau cov khoom siv kho mob thiab cov khoom siv.

Dab tsi yog Chemical Properties of Vulcanization?

Vulcanization yog txheej txheem uas cov roj hmab los yog lwm yam polymers raug kho nrog sulfur los yog lwm yam crosslinking agents los txhim kho lawv cov khoom, elasticity, thiab durability. Cov yam ntxwv ntawm vulcanization muaj xws li:

Kev sib txuas

Vulcanization ua rau kev tsim cov tshuaj sib txuas ntawm cov saw hlau polymer, uas ua rau muaj kev sib txuas ntawm peb sab. Qhov crosslinking no txhim kho cov neeg kho tshuab lub zog thiab nruj ntawm cov khoom.

Hardness thiab nruj

Cov txheej txheem crosslinking nce hardness thiab nruj ntawm cov roj hmab los yog polymer. Nws ua rau cov khoom tiv taus ntau dua rau deformation thiab txhim kho nws cov kav ntev.

Elasticity

Txawm hais tias qhov nce hauv hardness, vulcanization tuaj yeem tswj tau lossis txawm tias txhim kho elasticity ntawm cov khoom. Peb-dimensional network qauv tso cai rau cov khoom kom deform thiab rov qab mus rau nws cov duab qub.

Tiv thaiv cov tshuaj thiab kev laus

Vulcanization tuaj yeem txhim kho qhov tsis kam ntawm cov khoom siv rau cov tshuaj, cov kuab tshuaj, thiab oxidation. Nws txhim kho cov khoom ua haujlwm ntev thiab ruaj khov thaum lub sijhawm.

Tensile zog thiab tsim kua muag kuj

Kev tsim ntawm crosslinks thaum lub sij hawm vulcanization nce lub zog tensile thiab tsim kua muag tsis kam ntawm cov khoom, ua rau nws resistant rau mechanical stresses.

Kev hloov kho ntawm cov khoom nto

Vulcanization tuaj yeem hloov kho qhov chaw ntawm cov khoom, xws li ua kom nws cov kev sib txhuam los yog txhim kho nws cov adhesion rau lwm yam khoom.

Cov yam ntxwv tshwj xeeb ntawm vulcanization tuaj yeem sib txawv nyob ntawm seb hom polymer, cov xwm txheej ntawm cov txheej txheem vulcanization, thiab qhov sib ntxiv ntawm lwm cov tebchaw lossis additives. Cov khoom no tseem ceeb hauv ntau yam kev siv, xws li hauv kev tsim cov log tsheb, cov khoom siv roj hmab, thiab cov sealants.

Dynamic Mechanical Properties Ntawm Vulcanization Accelerator

Dynamic mechanical zog yog lwm txoj kev tseem ceeb rau cov yam ntxwv ntawm cov roj hmab, tshwj xeeb tshaj yog cov log tsheb tread rubber, uas cuam tshuam ncaj qha rau cov log tsheb tread resistance thiab dov tsis kam. Dynamic mechanical zog yog yam ntxwv ntawm dynamic viscoelastic nkhaus. Nyob rau hauv cov txheej txheem ntawm kev tshawb fawb, nws tau lees paub tias tus nqi tanδ ntawm 6 0 degree tuaj yeem cuam tshuam cov rolling tsis kam ntawm cov roj hmab vulcanized hauv cov txheej txheem dov, tus nqi tanδ ntawm 80 degree qhia txog kev ua haujlwm thermal, thiab tanδ. tus nqi ntawm 0 degree tuaj yeem ua tus yam ntxwv tiv thaiv kev ua haujlwm ntawm cov roj hmab vulcanized

Vulcanization ntawm roj hmab yog siv cov vulcanizing tus neeg sawv cev rau cross-link roj hmab macromolecules. Vulcanizing tus neeg sawv cev yog qhov ntxov tshaj plaws tsim thiab ua ntej tshaj plaws industrialized crosslinking tus neeg saib xyuas ntau yam, uas nyob hauv txoj haujlwm tseem ceeb hauv kev lag luam roj hmab. Thaum kho, tshwj xeeb tshaj yog thaum kho nrog leej faj, ntxiv rau tus neeg sawv cev kho, feem ntau yuav tsum tau ntxiv "kho accelerator" thiab "tus neeg sawv cev nquag" txhawm rau ua kom tiav kev kho kom zoo. Qee lub sij hawm kom tsis txhob vulcanization thaum ntxov, uas yog, hlawv, tab sis kuj ntxiv cov tshuaj tiv thaiv coke.

Dab tsi yog Cov Khoom Tshwj Xeeb ntawm Vulcanized Roj Hmab?

Vulcanized roj hmab muaj ntau yam khoom tshwj xeeb uas paub qhov txawv ntawm cov roj hmab uas tsis yog vulcanized:

Thermoplastic rau Thermoset Hloov

Qhov kev hloov pauv tseem ceeb tshaj plaws yog cov roj hmab uas tsis yog vulcanized yog thermoplastic, txhais tau tias nws softens thaum rhuab thiab hardens thaum txias. Vulcanization hloov roj hmab rau hauv cov khoom siv thermoset, uas txhais tau hais tias nws khaws nws cov duab txawm tias qhov kub ntawm qhov qub molding mus txog.

Txhim kho lub zog thiab elasticity

Vulcanized roj hmab muaj zog thiab elastic dua li nws cov tsis-vulcanized counterpart. Txoj kev sib txuas ntawm cov saw hlau polymer txhim kho cov khoom tiv thaiv rau tensile rog thiab elongation.

Txhim khu tshuaj tiv thaiv

Hla-txuas txuas txhim kho qhov tsis kam ntawm vulcanized roj hmab rau cov roj, rog, acids, thiab alkalis, ua rau nws tsim nyog rau daim ntawv thov uas yuav tsum tau tiv thaiv cov tshuaj no.

Txo Gas Permeability

Cov kev sib txuas ntawm kev sib txuas txo qhov sib txawv ntawm cov pa roj hmab los ntawm cov roj hmab, uas yog qhov zoo rau kev sib khi daim ntaub ntawv uas yuav tsum muaj roj lossis airtight kev ncaj ncees.

Thaum tshav kub kub Resistance

Vulcanized roj hmab tuaj yeem tiv taus qhov kub siab dua yam tsis muaj deforming lossis poob nws cov khoom siv hluav taws xob piv rau cov roj hmab uas tsis yog vulcanized.

Txhim kho Abrasion Resistance

Kev sib txuas sib txuas sib txuas ua rau kom muaj zog ntawm cov roj hmab, ua rau nws tsis tshua hnav los ntawm kev sib txhuam.

Kev laus zoo dua

Vulcanized roj hmab tau txhim khu kev tiv thaiv huab cua thiab UV hluav taws xob, uas ua rau qeeb degradation thiab ncua lub neej kev pab cuam ntawm cov khoom.

Nce Hardness

Vulcanization tso cai rau kev tswj kom zoo dua ntawm cov tawv tawv ntawm cov roj hmab los ntawm kev hloov kho ntawm cov vulcanizing system (cov ntsiab lus sulfur, accelerator hom thiab tus nqi, kho lub sijhawm, thiab kub).

Cov khoom hluav taws xob

Nyob ntawm qhov kev sib txuas ntawm kev sib txuas thiab cov qauv tsim, cov roj hmab vulcanized tuaj yeem nthuav tawm cov khoom siv hluav taws xob lossis cov khoom siv hluav taws xob, ua rau nws tsim nyog rau ntau yam kev siv hluav taws xob.

Cov khoom no ua rau cov roj hmab vulcanized muaj ntau yam khoom siv rau ntau yam kev siv, nrog rau cov log tsheb, cov ntsaws ruaj ruaj, gaskets, hoses, khau, thiab ntau lwm yam uas ua haujlwm ntev thiab muaj zog yog qhov tseem ceeb.

Dab tsi yog ob yam khoom Uas Vulcanized Roj Hmab muaj raws li qhov tshwm sim ntawm Vulcanization?

Vulcanization muab vulcanized roj hmab ob yam tseem ceeb:
Txhim kho elasticity: Vulcanization tsim ib lub network ntawm cov tshuaj sib txuas hauv cov roj hmab, uas ua rau nws cov elasticity. Qhov no txhais tau hais tias cov roj hmab vulcanized tuaj yeem deform nyob rau hauv kev ntxhov siab thiab tom qab ntawd rov qab mus rau nws cov qauv qub, ua rau nws tsim nyog rau cov ntawv thov uas yuav tsum tau ua kom yooj yim thiab ua haujlwm ntev.
Txhim kho durability: Cov txheej txheem crosslinking thaum lub sij hawm vulcanization ua rau cov roj hmab tiv taus hnav, tsim kua muag, thiab degradation. Nws txhim kho cov khoom siv lub neej ntev thiab ua rau nws muaj peev xwm tiv taus cov xwm txheej hnyav thiab cov neeg kho tshuab kev ntxhov siab.
Cov khoom no ua rau cov roj hmab vulcanized muaj txiaj ntsig zoo hauv ntau qhov kev lag luam, xws li tsheb, kev tsim khoom, thiab kev tsim kho. Piv txwv li, cov roj hmab vulcanized feem ntau yog siv rau hauv cov log tsheb, cov ntsaws ruaj ruaj, hoses, thiab gaskets vim nws cov elasticity thiab durability. Koj puas muaj ib daim ntawv thov tshwj xeeb hauv siab qhov twg siv roj hmab vulcanized? Kuv tuaj yeem muab cov ntaub ntawv tshwj xeeb ntxiv raws li qhov ntawd.

Dab tsi tshuaj yog siv rau Accelerating Vulcanization?

Ntau cov tshuaj siv tau los ua kom cov txheej txheem vulcanization. Ib qho tshuaj uas nquag siv yog sulfur. Sulfur reacts nrog cov roj hmab molecules, tsim crosslinks thiab ceev cov vulcanization. Lwm yam accelerators yuav muaj xws li zinc oxide, magnesium oxide, thiab ntau yam organic compounds.

Kev xaiv ntawm accelerator nyob ntawm yam xws li hom roj hmab, cov khoom xav tau ntawm cov khoom kawg, thiab cov txheej txheem ua haujlwm. Lub accelerator feem ntau yog ntxiv rau me me rau cov roj hmab sib tov ua ntej nws mus rau cov txheej txheem vulcanization.

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev siv cov accelerators yuav tsum tau ua tib zoo saib xyuas thiab kev ua kom zoo kom ntseeg tau tias cov vulcanization tsim nyog thiab kom tsis txhob muaj teeb meem xws li over-vulcanization los yog vulcanization tsis sib xws. Cov kev tsim tshwj xeeb thiab cov xwm txheej ntawm vulcanization feem ntau yog txiav txim siab los ntawm kev sim thiab ua raws li cov qauv kev lag luam lossis cov lus qhia.

Dab tsi kub yog xav tau rau roj hmab Vulcanization?

Qhov kub xav tau rau roj hmab vulcanization feem ntau yog li ntawm 140 degree txog 165 degree (284 degree F txog 329 degree F). Txawm li cas los xij, qhov ntsuas kub yuav txawv nyob ntawm seb hom roj hmab twg yog vulcanized, formulation ntawm additives, thiab cov khoom uas xav tau ntawm cov khoom kawg. Qee cov txheej txheem yuav ua haujlwm ntawm qhov kub siab tshaj li ntawm 200 degree (392 degree F) lossis siab dua me ntsis rau cov ntawv tshwj xeeb.

Lub sij hawm vulcanization kuj plays lub luag hauj lwm; ntev cov roj hmab nyob ntawm qhov kub ntawm vulcanizing, qhov dav ntawm kev sib txuas yuav ntau dua. Accelerators tuaj yeem txo qhov kub ntawm vulcanizing thiab txo lub sijhawm xav tau kom ua tiav tag nrho kev sib txuas.

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias vulcanization yuav tsum tau ua tib zoo tswj kom tsis txhob overcuring lossis undercuring, ob qho tib si tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm cov roj hmab. Overcuring tuaj yeem ua rau brittleness, thaum undercuring tshwm sim hauv kev sib txuas tsis txaus, cuam tshuam rau cov roj hmab lub zog thiab kav ntev.

Peb lub Hoobkas

Niujiao Chemical tshwj xeeb hauv kev muab ntau yam khoom siv tshuaj, tsom mus rau kev tshawb fawb thiab kev tsim kho, kev tsim khoom thiab kev lag luam ntawm ntau yam tshuaj raw cov ntaub ntawv thiab cov khoom lag luam, tso siab rau cov khoom zoo tshaj plaws xa tawm mus rau ntau tshaj li lub teb chaws thiab cheeb tsam. Nrog rau kev ua tiav ntau yam thiab cov lus qhia tshwj xeeb, tus nqi zoo thiab cov kev pabcuam zoo, nws muaj lub koob npe nrov hauv kev ua lag luam, yeej ntau thiab ntau tus neeg siv khoom, thiab tau mus txog kev sib koom tes ntawm kev sib raug zoo.

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FAQ

Q: Lub luag haujlwm ntawm lub accelerator hauv vulcanization yog dab tsi?

A: Lub accelerator yog txhais raws li cov tshuaj ntxiv rau hauv cov roj hmab sib xyaw kom ceev ntawm vulcanization thiab tso cai rau vulcanization mus rau qhov kub thiab txias dua.

Q: Dab tsi yog cov yam ntxwv ntawm vulcanization?

A: Ib qho ntawm cov tshuaj tseem ceeb tshaj plaws hauv vulcanization yog tus neeg sawv cev sib txuas. Elemental sulfur yog tus neeg sawv cev sib txuas uas siv dav tshaj plaws hauv kev lag luam roj hmab vim nws pheej yig heev, muaj ntau, thiab yooj yim muaj. Tsis tas li ntawd, sulfur yog yooj yim heev rau sib tov thiab yooj yim soluble hauv roj hmab.

Q: Dab tsi yog cov khoom tshwj xeeb ntawm cov roj hmab vulcanized?

A: Muaj cov roj hmab elasticity zoo tshaj plaws thiab zoo heev hauv cov khoom siv kho tshuab. Nws muaj cov yam ntxwv nruab nrab xws li huab cua tsis kam, ozone tsis kam, kub tsis kam, thiab tshuaj lom neeg tsis kam. Zoo ntawm roj tsis kam, abrasion tsis kam, thiab aging kuj.

Q: Dab tsi yog ob yam khoom uas vulcanized roj hmab muaj los ntawm vulcanization?

A: Qhov tseem ceeb tshaj plaws elastic zog ntawm vulcanized roj hmab yog cov hauv qab no: (1) nws yog ntau extensible tshaj crystalline solids, (2) nws cog lus thaum rhuab, thiab muab kub thaum stretched.

Q: Dab tsi yog qhov accelerator ntawm vulcanization ntawm roj hmab?

A: Lub accelerator yog txhais raws li cov tshuaj ntxiv rau hauv cov roj hmab sib xyaw kom ceev ntawm vulcanization thiab tso cai rau vulcanization mus rau qhov kub thiab txias dua.

Q: Dab tsi tshuaj yog siv los ua kom vulcanization?

Q: Dab tsi yog qhov tsis zoo ntawm vulcanization ntawm roj hmab?

A: Qhov tsis zoo ntawm vulcanization uas yuav tsum tau txiav txim siab yog tus nqi pib dua thiab lub sijhawm ntev yuav tsum tau ua kom tiav cov splice thaum piv rau cov tshuab splice. Lub tev rov qab ntawm cov khaubncaws sab nraud povtseg ntawm txoj hlua khi los npaj rau ob qho tib si kub vulcanization thiab kev sib txuas tshuaj txias tuaj yeem nyuaj.

Q: Qhov twg zoo dua TBBS lossis CBS accelerator?

A: TBBS piv rau CBS, nws muaj lub sij hawm scorch ntev dua, muaj kev nyab xeeb ntau dua thiab kho sai dua. Haum rau lub log tsheb, txoj siv sia, hose thiab lwm yam khoom TRG.

Q: Cov cuab yeej hloov pauv dab tsi tshwm sim thaum lub sij hawm vulcanization?

A: Vulcanization hloov lub cev lub cev ntawm cov roj hmab. Nws nce viscosity, hardness, modulus, tensile zog, puas kuj, thiab txo elongation ntawm so, compression set thiab solubility nyob rau hauv cov kuab tshuaj.

Q: Puas tuaj yeem vulcanization thim rov qab?

A: Cov txheej txheem vulcanization muab cov khoom siv tshwj xeeb, tab sis tsis yooj yim thim rov qab. Rubberlink yog ib qho ntawm ob peb qhov kev lag luam uas muaj peev xwm thim rov qab cov txheej txheem vulcanization ntawm roj hmab, rov ua dua nws kom nws tuaj yeem siv dua - devulcanization.

Q: Koj puas tuaj yeem thim rov qab vulcanized roj hmab?

Q: Puas yog vulcanized roj hmab nqus dej?

A: (1) Cov txheej txheem ntawm vulcanization txo cov dej nqus los ntawm roj hmab. (2) Cov roj hmab uas muaj feem pua ntawm cov khoom siv protein ntau yuav tsis tom qab vulcanization yuav tsum nqus dej ntau dua li cov roj hmab nrog cov ntsiab lus nitrogen tsawg.

Q: Puas yog vulcanized roj hmab stretchy?

A: Thaum lub sij hawm vulcanization, cov roj hmab ntuj tau hla kev sib txuas ntawm cis -1, 4 polyisoprene chains los ntawm disulphide bonds. Qhov no ua rau vulcanised roj hmab tawv, elastic thiab stretchy.

Q: Yuav ua li cas rau vulcanized roj hmab tom qab nws tau ncab?

A: Vulcanized roj hmab yog ob qho tib si muaj zog thiab elastic. Nrog nws nce elasticity, nws tuaj yeem ncab mus rau qib siab dua yam tsis muaj kev cuam tshuam mus tas li deformation. Vulcanized roj hmab feem ntau zoo tiv thaiv kev puas tsuaj dua li cov roj hmab ib txwm muaj. Abrasion muaj kev puas tsuaj vim scraping.

Q: Puas yog vulcanizing ruaj khov?

A: Chemical Vulcanizing Fluid - Permanently Bonds One-Piece, Stem Repairs and Cap Repairs to the Tyre rau kev kho kom raug.

Q: Puas yog roj hmab cement vulcanizing?

A: Thaum cov kua nplaum los yog roj hmab cement ntxiv, nws tsim cov tshuaj tiv thaiv uas ua rau cov khoom cua sov thiab ua rau nws mus rau lub log lossis lub raj. Cov roj hmab cement nws tus kheej tsis tas yuav "vulcanizing." Cov roj hmab tsis tu ncua yuav ua haujlwm ua tus neeg sawv cev vulcanizing thiab tsim kom muaj kev sib khi zoo ntawm cov roj hmab thiab thaj.

Q: Puas yog PVC vulcanized roj hmab?

A: Cov lus teb yog "tsis yog." PVC yog cov yas amorphous, tab sis nws tuaj yeem tsim muaj qee yam zoo li roj hmab. Tab sis nws tsis yog vulcanized zoo li roj hmab.

Q: Qhov txawv ntawm primer thiab activator yog dab tsi?

A: Cov activators yog cov tshuaj npaj los txhawm rau txhawm rau kho tus nqi, feem ntau ntawm cov kua nplaum ua kua nplaum. Kuj tseem hu ua adhesion promoters, primers yog siv rau ntawm substrates los tsim ib zaj duab xis uas yuav txhim khu kev adhesion ntawm adhesives.

Q: Puas yog vulcanizing kua nplaum tib yam li roj hmab cement?

A: "Dab tsi yog qhov txawv ntawm vulcanizing kua thiab roj hmab cement?" Cov kua vulcanizing yeej softens saum npoo ntawm cov roj hmab, cia nws fuse rau thaj. Qhov zoo tshaj plaws, thaj thiab lub raj yuav tsum sib koom ua ke, w / oa ntshiab ciam teb ntawm ib qho mus rau lwm qhov. Roj hmab cement yog cov kua nplaum.

Q: Puas yog tag nrho cov roj hmab cement vulcanizing?

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