Vulcanized adhesives yog cov nplaum tshwj xeeb uas cov ntaub ntawv sib txuas los ntawm cov tshuaj tiv thaiv vulcanization. Lawv lub luag haujlwm tseem ceeb yog tsim peb tus qauv - qhov sib txuas network los ntawm kev sib txuas tshuaj lom neeg - sib txuas, muab cov ntaub ntawv sib koom ua ke siab zog, kev laus ua haujlwm, thiab tshuaj tiv thaiv corrosion.
Basic Bonding Function: Vulcanized adhesives lub cev adsorb rau ntawm qhov chaw ntawm cov ntaub ntawv sib txuas los ntawm kev sib cuam tshuam. Tib lub sijhawm, cov pab pawg nquag tsim tawm thaum lub sijhawm vulcanization hnov mob chemically nrog cov khoom nto, tsim cov tshuaj tiv thaiv. Piv txwv li, thaum sib txuas cov roj hmab rau hlau, tus neeg sawv cev vulcanizing nyob rau hauv cov nplaum tau txais cov tshuaj tiv thaiv ntxiv nrog rau ob daim ntawv cog lus hauv cov roj hmab molecular saw, tsim C-S- Cov ntawv cog lus hlau, ua rau muaj zog tshaj 80% ntawm cov roj hmab lub zog ntawm lub cev. Qhov kev sib txuas ntawm ob lub tshuab no ua rau nws zoo heev hauv kev siv xws li kho lub log tsheb thiab kev sib txuas siv conveyor. Tiag -kev sim ntiaj teb no qhia tau hais tias siab -vulcanized adhesives muaj peev xwm ua tau lub zog shear ntawm 15-25 MPa ntawm chav tsev kub.
Kev Txhim Kho Kev Ua Haujlwm: Cov txheej txheem vulcanization ua rau tus ntoo khaub lig- txuas cov tshuaj tiv thaiv hauv cov roj hmab molecular chains, tsim cov qauv thermosetting network. Qhov kev hloov ntawm cov qauv no coj peb qhov kev txhim kho tseem ceeb:
1) Txhim kho qhov kub thiab txias: cov nplaum zoo tib yam soften ntawm 80 degree, thaum vulcanized adhesives tswj kev ua haujlwm ruaj khov ntawm 150-200 degree;
2) Txhim kho kev tawm tsam: kev tiv thaiv rau cov kuab tshuaj xws li roj av thiab roj hydraulic yog nce los ntawm 3-5 zaug;
3) Kev ncua lub neej qaug zog: nyob rau hauv kev sib hloov kev ntxhov siab, qhov tawg ntawm cov nplaum nplaum yog txo los ntawm 60-80% piv rau unvulcanized adhesives. Cov khoom no ua rau nws nyiam cov khoom sib txuas rau cov khoom tseem ceeb xws li tsheb poob siab absorbers thiab hydraulic seals hauv engineering machinery.
