Dab tsi yog tus curing agent bis(2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane?
Nov yog cov lus qhia ntxaws txog nws:
Cov yam ntxwv yooj yim
Cov yam ntxwv ntawm cov qauv tshuaj: Cov qauv molecular muaj ob pawg tert-butyl peroxy (-OOC (CH₃)₃), txuas nrog 2nd thiab 5 txoj haujlwm ntawm 2, 5-dimethylhexane. Cov qauv tshwj xeeb no ua rau nws muaj tshuaj lom neeg heev. Lub peroxide daim ntawv cog lus yog ib qho yooj yim los ua homolytically faib nyob rau hauv tej yam kev mob los tsim dawb radicals, uas nyob rau hauv lem ua rau cov tshuaj tiv thaiv tom qab.
Lub cev muaj zog: Nws feem ntau yog xim tsis muaj xim rau lub teeb daj pob tshab kua nrog cov ntxhiab tsw tshwj xeeb. Nws qhov ntom ntom yog qis dua li cov dej thiab nws yog insoluble hauv dej, tab sis nws tuaj yeem yaj tau zoo hauv ntau hom organic solvents, xws li toluene, acetone, ethyl acetate, thiab lwm yam. Nws yog qhov ruaj khov ntawm chav tsev kub thiab siab, tab sis nws yog rhiab heev rau tshav kub, kev co, kev sib txhuam, thiab lwm yam, thiab nws yog ib qho yooj yim mus decomposition tshuaj nyob rau hauv cov stimuli sab nraud.
Kev siv tseem ceeb
Roj Hmab vulcanization: Nws yog tus neeg sawv cev vulcanizing feem ntau siv hauv kev lag luam roj hmab, tshwj xeeb tshaj yog tsim rau vulcanization ntawm ntau yam roj hmab xws li silicone roj hmab, ethylene propylene diene monomer roj hmab (EPDM), nitrile roj hmab (NBR), thiab lwm yam. Thaum lub sij hawm vulcanization. txheej txheem ntawm roj hmab, cov dawb radicals generated los ntawm decomposition ntawm dipentadienyl vulcanizer yuav ua rau cov tsim ntawm cross-linked bonds ntawm roj hmab. molecular chains, thiaj li hais tias cov roj hmab hloov los ntawm cov thawj linear molecular qauv mus rau ib tug peb-dimensional network qauv, yog li ntawd zoo heev txhim kho cov kev ua tau zoo ntawm cov roj hmab. Piv txwv li, nws tuaj yeem txhim kho qhov nyuaj, lub zog, elasticity, hnav tsis kam, kev laus ua haujlwm thiab tshuaj lom neeg corrosion ntawm cov roj hmab, kom cov khoom siv roj hmab tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov ntawv thov sib txawv, xws li silicone roj hmab seals, EPDM automotive sealing strips, NBR roj-resistant roj hmab cov khoom, thiab lwm yam. Nws yuav siv nyob rau hauv zus tau tej cov nws.
Polymerization pib: Raws li ib tug dawb radical polymerization pib siv nyob rau hauv lub synthesis ntawm ib co polymer cov ntaub ntawv, nws muaj peev xwm koom nyob rau hauv lub pib ntawm polymerization tshwm sim ntawm vinyl monomers xws li styrene thiab methyl methacrylate, pab tswj cov kev taw qhia tseem ceeb xws li kev pib thiab tus nqi. Cov tshuaj tiv thaiv polymerization thiab qhov hnyav molecular ntawm qhov kawg generated polymer, thiab pab tau cov polymers nrog kev ua tau zoo heev thiab haum molecular hnyav tis, uas yog siv nyob rau hauv zus tau tej cov cov khoom yas, txheej, nplaum thiab ntau lwm yam khoom.
Kev ceev faj txog kev nyab xeeb
Cov yam ntxwv muaj kev phom sij: Nws yog cov tshuaj tua hluav taws kub thiab tawg. Vim nws cov qauv, nws yooj yim rau decompose los tsim cov dawb radicals thiab tso tawm ntau lub zog. Thaum nws ntsib cov nplaim taws, qhov kub thiab txias, qhov tso tawm zoo li qub, cuam tshuam loj heev lossis kev sib txhuam, nws yooj yim ua rau tawg. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum ua raws li cov kev cai ntawm cov tshuaj lom neeg muaj kev phom sij thaum khaws cia, kev thauj mus los thiab siv, thiab nws yuav tsum tau ceev kom deb ntawm hluav taws kub, qhov chaw kub, oxidants, thiab lwm yam.
Kev phom sij rau kev noj qab haus huv: Nws muaj qee yam cuam tshuam rau tib neeg kev noj qab haus huv. Kev sib cuag ntawm daim tawv nqaij tuaj yeem ua rau khaus khaus xws li tawv nqaij liab, khaus, mob thiab txawm kub hnyiab; Kev sib cuag ntawm qhov muag tuaj yeem ua rau qhov muag puas tsuaj loj, xws li pob txha o thiab tsis pom kev; Kev nqus pa ntawm nws cov pa tsis haum yuav ua rau lub ntsws ua pa, ua rau hnoos, hawb pob, dyspnea thiab lwm yam tsos mob tsis xis nyob. Kev sib cuag ntev los yog loj tuaj yeem ua rau muaj kev puas tsuaj rau lub ntsws thiab lub paj hlwb.