Cov txheej txheem cyclopentane foaming yuav tsum muaj kev tswj xyuas nruj ntawm cov txheej txheem kub thiab lub sijhawm kho, vim tias polyurethane foaming yog ib qho nyuaj rau lub cev thiab tshuaj tiv thaiv txheej txheem. Kev hloov pauv hauv cov khoom siv raw, pwm, kub preheating, thiab lub sijhawm kho yuav cuam tshuam ncaj qha rau cov foaming zoo.
Cov khoom siv dub yog cov tshuaj lom neeg muaj zog heev uas tuaj yeem cuam tshuam nrog dej. Thaum lub sij hawm cia, lub thawv yuav tsum tau khaws cia qhuav thiab kaw, thiab tiv thaiv nrog cov roj nitrogen qhuav. Kev sib cuag ncaj qha nrog dej yuav tsum zam thaum siv. Cia kub qis dua 5℃yuav ua rau crystallization; yog li ntawd, kev tiv thaiv khov yog tsim nyog. Yog hais tias crystallization tshwm sim, nws yuav tsum tau rhuab mus rau 70-80℃thiab melted ua ntej siv, thiab kom huv si stirred. Cia kub siab tshaj 50℃yuav tsim cov khoom insoluble, nce viscosity thiab hloov tshuaj lom neeg. Cov khoom siv dawb nthuav tawm cov khoom zoo sib xws.
Yog li ntawd, cov khoom siv dub thiab dawb thiab cyclopentane yuav tsum tau muab cia rau hauv qhov dej - cua, txias, thiab qhuav qhov chaw ntawm chav tsev kub (20-25 degree), tsis txhob tshav ntuj ncaj qha thiab los nag.
