Qhov cuam tshuam ntawm PVC thiab silicone cov ntsiab lus ntawm cov txheej txheem hluav taws xob
Viscosity thiab Flowability
PVC: pvc siv rau dispensing yog feem ntau ib tug paste {{0} Zoo li Resin (PVC ONTE), nrog rau kaum tawm txhiab xyoo ( Cua sov lossis ntxiv ib qho rau cov neeg rau txim yog tsim nyog los kho cov fluidity, lwm yam teeb meem xws li tsis xwm yeem thiab cov hlua yuav tshwm sim.
Silicone: Silicone siv rau qhov kev faib tawm yog feem ntau yog ob {{} -}} kub vulcanizing (RTV) silicone. Nws muab cov dav dav dav ntau (los ntawm tsawg - viscosest rau high- pixotropy (thinning nyob rau hauv sab nraud quab yuam thiab thickened tom qab sawv ntsug). Qhov no ua rau kev faib tawm yooj yim dua thiab tiv thaiv kev khiav tawm, ua rau nws tsim qauv tshwj xeeb lossis sau cov khoob me me.
Kho mechanism
PVC: Curing relies on heat-induced plasticization (typically baking at 150-200℃). Cov khoom siv yog tsim los ntawm cov kuab tshuaj evaporation lossis resin yaj tus ntoo khaub lig-}} txuas. Kev kho lub nrawm yog cuam tshuam ntau dhau los ntawm qhov kub thiab txias thiab tuab. Cov khaubncaws sab nraud tuab yuav xav tau kauj ruam - kev kho kom tsis txhob muaj pa npuas. Silicone:
Ob {-}} Cheeb Tsam Silicone: Kho tshuaj tiv thaiv tom qab tov cov Cheebtsam A thiab B (piv txwv li, hws lossis ntxiv). Kev kho tau tuaj yeem ua tau ntawm chav tsev kub los yog nrawm los ntawm cua sov. Tus txheej txheem kho tau yog volatile - pub dawb thiab haum rau sealing thiab encapsulation kev siv.
Ib Leeg -}} sib xyaw silicone: cures thaum sib cuag nrog noo noo, nrog kev nce zuj zus kho tus nqi ntawm sab hauv. Haum rau me me- cheeb tsam dispensing, tab sis nrog qee yam av noo.
