Imikhiqizo ye-PVC foaming agent imhlophe, kodwa ngezinye izikhathi iba phuzi uma igcinwe isikhathi eside. Iyini imbangela?

Okokuqala, udinga ukunquma ukuthi ngabe kukhona yini inkinga nge-ejenti ekhethiwe yokugqwala. Isilawuli se-PVC foam sisebenzisa i-ejenti egqwala ukubola nokukhiqiza igesi ebangela ama-pores. Lapho izinga lokushisa lokucubungula lingafinyelela izinga lokushisa lokubola le-ejenti egqwala, ngokwemvelo ngeke libe yi-foam. Izinhlobo ezahlukene zama-ejenti egqwala zinamazinga okushisa ahlukene okugqwala, noma ngabe uhlobo olufanayo lwe-ejenti egqwala lukhiqizwa abakhiqizi abahlukene, izinga lokushisa lokugqwala lingase lingafani ncamashi. Khetha isilawuli se-PVC foam esikufanele. Akuwona wonke ama-PVC afanelekela ukugqwala, ngakho-ke kuyadingeka ukukhetha izinto ezinezinga eliphansi le-polymerization. Izinto ezinjalo zinezinga lokushisa eliphansi lokucubungula, njenge-S700. Uma ufuna ukusebenzisa i-1000 ne-700, ingase ihluke. I-ejenti egqwala kungenzeka ukuthi isivele ibolile futhi i-PVC ayikancibiliki.

Ngaphezu kwalokho, kunezinye izithasiselo. Izinga lokushisa lokubola kwe-ejenti evamile yokugqwala liphakeme kunezinga lokushisa lokucubungula le-PVC. Uma izithasiselo ezifanele zingafakwanga, umphumela uba ukuthi i-PVC iyabola (iphenduka ibe phuzi noma ibe mnyama) futhi i-ACR ayikakaboli (amagwebu). Ngakho-ke, kuyadingeka ukwengeza iziqinisi ukugcina i-PVC izinzile (ayiboli ekushiseni kokuhlola kwe-AC). Ngakolunye uhlangothi, izithasiselo ezikhuthaza ukugqwala kwe-AC ziyangezwa ukuze kuncishiswe izinga lokushisa lokugqwala kwe-AC futhi zihambisane nayo. Kukhona futhi izithasiselo zokwenza ama-foam pores abe mancane futhi abe makhulu, okuwukugwema ama-foam pores amakhulu aqhubekayo nokunciphisa amandla omkhiqizo. Njengoba izinga lokushisa liphansi futhi lingasaphenduki libe phuzi, ngingaqinisekisa ukuthi izinga lokushisa lakho eliphezulu langaphambilini libangele ukuthi i-PVC ibole futhi ibe phuzi. Ukugqwala kwe-PVC kuyindlela yokuzikhuthaza, okusho ukuthi izinto ezibolile zikhuthaza ukugqwala okwengeziwe. Ngakho-ke, kuvame ukubonakala ukuthi kulungile uma izinga lokushisa lingekho phezulu, kodwa uma izinga lokushisa liphezulu kancane, lizogqwala ngobuningi obukhulu.