Yuav ua li cas los txhim kho qhov kub thiab txias ntawm roj hmab?

Kev tiv thaiv huab cua kub los yog kev laus thaum tshav kub kub yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov tsheb uas feem ntau siv rau hauv cov chaw uas muaj qhov kub thiab txias. Automotive manufacturers tau xav tias muaj kev kub ntxhov los ua kom muaj kev pabcuam ntev dua rau lawv cov khoom siv roj hmab. Anaerobic thaum tshav kub kub aging zog thiab tshav kub thiab huab cua laus zog yog txawv. Cov roj hmab muaj qhov ua kom sov zoo dua, tab sis tseem yuav tsis tuaj yeem tiv taus oxygen.

Nco tseg: Cov txheej txheem kev sim dav dav no yuav tsis siv tau rau txhua kis tshwj xeeb. Ib qho ntawm cov kev hloov pauv uas tuaj yeem txhim kho huab cua-aging tsis kam lossis kub-aging kuj yuav cuam tshuam rau lwm yam khoom, txawm tias zoo dua lossis phem dua.

1. Perfluoroelastomer

Yog tias cov khoom siv roj hmab yuav tsum muaj cov cua kub zoo, koj yuav tsum xaiv cov roj hmab perfluorinated. Nws tau tshaj tawm tias kev siv kub ntawm perfluoroelastomer yog mus txog 316 ℃.

2, fluorine roj hmab

Fluorine roj hmab FKM muaj cov cua kub zoo heev, thiab nws tuaj yeem siv rau qhov kub txog li 260 ℃. Txhawm rau ntxiv dag zog rau qhov kub thiab txias tsis kam ntawm fluorine roj hmab, koj yuav tsum xaiv txoj cai acid (acid absorbent), xws li kev ua haujlwm tsis tshua muaj magnesium oxide, kev ua haujlwm siab magnesium oxide, calcium oxide, calcium hydroxide, zinc oxide, thiab lwm yam. Los ntawm kev xaiv bisphenol AF raws li lub vulcanization system, lub tshav kub aging kuj ntawm cov roj hmab yuav zoo dua. Siv nyob rau hauv hnyav cav roj ib puag ncig, lub tshav kub aging kuj ntawm ternary fluoroelastomer ua los ntawm vinylidene fluoride, tetrafluoroethylene thiab propylene yog zoo dua cov fluoroelastomer dav dav. Qhov no yog vim qhov hloov ntawm hexafluoropropylene los ntawm propylene hauv txheej txheem polymerization.

3, HNUB

Qhov siab dua qhov degree ntawm hydrogenation, qhov zoo dua qhov kub tsis kam ntawm HNBR, vim tias yuav luag tsis muaj ob daim ntawv cog lus ntawm cov saw tseem ceeb uas tsis ruaj khov. Qee cov HNBRs tseem tuaj yeem ua vulcanized nrog sulfur vim tias lawv tseem muaj qee qhov tsis txaus ntseeg ob daim ntawv cog lus. Txawm li cas los xij, yog tias vulcanized nrog peroxide, qhov kub ntawm qhov sib xyaw yuav raug txhim kho. Rau HNBR roj hmab, TOTM tuaj yeem muab cov cua sov zoo dua li DOP vim qhov tsis muaj zog thiab siab molecular hnyav ntawm cov trioctyl plasticizers.

4. Neoprene

W-hom neoprene muaj kev tiv thaiv tshav kub zoo dua li G-hom neoprene. Diphenylamine octanoate yog ib qho antioxidant zoo dua rau neoprene, uas tuaj yeem txhim kho cov cua sov.

5, EPDM

EPDM tseem yuav muaj cua sov zoo ntawm 125 ℃ tom qab haum haum. Kev siv cov peroxide vulcanized EPDM, tuaj yeem ua rau cov roj hmab muaj cua sov zoo dua.

6, Tsawg viscosity vapor theem txoj kev EPDM

Cov ntsiab lus siab ethylene thiab ultra-low viscosity vapor theem EPDM, tuaj yeem sau nrog ntau tus neeg muab tub lim, vim tias cov ntsiab lus ethylene siab, kev ua haujlwm tsis tas yuav koom nrog kev ua cov cua sov-resistant huab cua aging tsis zoo thiab resin, tseem tuaj yeem ua rau cov roj hmab nrog cov khoom ua haujlwm zoo, yog li qhov tseeb ntawm cov roj hmab tau txhim kho.

7, Tsis txhob siv cov styrene siab

Tsis txhob ntxiv cov styrene siab rau cov roj hmab uas siv rau hauv qhov kub thiab txias.

8, talcum hmoov

Hauv EPDM hose roj hmab, hloov 40% ntawm cov pa roj carbon dub nrog talcum hmoov, uas tuaj yeem txhim kho qhov kub ntawm cov roj hmab. Qee qib ntawm talcum hmoov muaj txiaj ntsig zoo dua li cov av nplaum kho lossis tsis kho hauv qhov no.

9, High viscosity plasticizer

Ntawm cov plasticizers, cov viscosity siab plasticizers tuaj yeem muab cov cua sov zoo dua qub dua li cov viscosity tsawg. Vim hais tias lub siab viscosity plasticizer feem ntau muaj qhov hnyav molecular, tsis yooj yim rau volatilize, yog li zoo stability thiab zoo kub kuj.

10, Rape noob roj rau neoprene

Txhawm rau ua kom cov neoprene muaj qhov ua tau zoo dua qub, cov roj canola xav tau vim tias nws muaj viscosity tsawg, uas ua rau cov roj hmab tsis muaj hysteresis thiab tsis muaj zog, uas tuaj yeem ua rau cov roj hmab muaj kev laus zoo.

11, Siv tau EV / semi-effective SEV vulcanization system

Nyob rau hauv qhov zoo los yog ib nrab-zoo vulcanization system, qhov piv ntawm accelerator thiab sulfur yog siab, uas yog, 'kev txhawb siab thiab tsis muaj leej faj' system, nrog 'sulfur rau lub cev' es tsis txhob ntawm ib leej faj, nyob rau hauv no vulcanization system, qhov feem pua ntawm ib tug sulfur daim ntawv cog lus thiab ob tug sulfur daim ntawv cog lus nyob rau hauv lub vulcanized roj hmab yog siab dua, vim hais tias ntawm nws cov sulfur ib leeg daim ntawv cog lus, nyob rau hauv no vulcanization system, qhov kev faib ua feem ntawm ib tug sulfur daim ntawv cog lus thiab ob tug sulfur daim ntawv cog lus nyob rau hauv lub vulcanized roj hmab yog siab dua, vim hais tias ntawm nws cov sulfur daim ntawv cog lus nyob rau hauv no ob npaug rau sulfur. tshaj li ntawm ntau-sulfur daim ntawv cog lus, yog li ntawd, lub tshav kub kuj stability ntawm cov roj hmab yog txhim kho thiab lub tshav kub aging kuj yog zoo dua.

12, Zinc oxide

Vulcanization / sub-sulfuramide vulcanization system ntawm cov roj hmab, ntim nrog zinc oxide ntau dua, tuaj yeem muab cov roj hmab zoo dua thaum tshav kub kub aging zog thiab zoo dua tiv thaiv tom qab sulfur.

13, Peroxide vulcanized EPDM roj hmab

Nyob rau hauv peroxide vulcanized EPDM compound, ZMTI raug xaiv los ua cov tshuaj tiv thaiv antioxidant, uas tuaj yeem muab cov khoom sib xyaw ua ke ntau dua thiab kev laus tiv thaiv tshav kub.