Tseem muaj kev sib tw hauv Aliphatic Iso foaming.
Nws yog feem ntau muaj qis reactivity, ua npuas ncauj tswj thaum lub sij hawm foaming txheej txheem nyuaj.
Kev khiav hauj lwm ntau los yog kam rau ua yog nqaim, ua rau nws nyuaj los tsim ua raws li cov ntaub ntawv mos.
Thaum lub sij hawm foaming commen pom ua npuas ncauj los yog hauv zos vau, coarse ua npuas ncauj, nto hmoov, thiab thaiv npuas shrinkage.
Xav tau kev saib xyuas uas siv aliphatic ISO txoj kev tsis yog kev tiv thaiv tag nrho rau yellowing. Lub sij hawm ntev dhau los ntawm lub teeb, dej, thiab cua sov, oxidation-induced yellowing yuav tshwm sim, txawm tias nws qeeb qeeb.
Cov khoom tseem ceeb raw khoom thiab additives:
- Polyols:
Polyether polyols xws li Polyether 210, 220, 560s,
high-activity polyether polyols 4500-6000mw, thiab me-molecule polyols zoo li ethylene glycol, propylene glycol, butylene glycol, DEG, thiab DPG.
- Isocyanates: Feem ntau siv isocyanates suav nrog HDI, IPDI, thiab HMDI