Ngenxa yokuthi izinsiza zokucubungula i-PVC zihambisana kakhulu ne-PVC futhi zinesisindo esilinganiselwe samangqamuzana (cishe (1-2) × 105-2.5 × 106g / mol) futhi ayikho i-powder yokugqoka, zingaphansi kokushisa nokuxuba ngesikhathi sokubumba. Ziqala zithambe futhi zibophe ngokuqinile izinhlayiya ze-resin ezizungezile. Ngokungqubuzana nokudlulisa ukushisa, ukuncibilika (ijeli) kuyakhuthazwa. I-viscosity yokuncibilika ayinciphisi, noma ikhule; Ngenxa yokubosheka kwamaketanga amangqamuzana, ukunwebeka, amandla, kanye nokwandiswa kwe-PVC kuye kwathuthukiswa.
Ngaphezu kwalokho, ngenxa yokuthi izingxenye ezihambisanayo nezingahambelani ze-PVC zakha izinsiza zokucubungula ezinokwakheka kwegobolondo eliwumgogodla. Sekukonke, ayihambisani ne-PVC ngakho-ke isebenza njenge-lubricant yangaphandle, kodwa ayinciphisi futhi yakha isikali, esinomthelela wokulibazisa ekuncibilikeni. Ngakho-ke, ngokusekelwe kulezi zici zohlelo lokusebenza, izinsiza zokucubungula i-PVC zingahlukaniswa zibe izigaba ezimbili: indawo yonke kanye neyokugcoba. Umsebenzi wezinsiza zokucubungula ze-PVC jikelele ukunciphisa izinga lokushisa elincibilikayo, ukuqinisa amandla okushisa nokufana, ukunciphisa ukuphuka kwe-ncibilika, futhi kunikeze i-ductility enkulu. Le misebenzi inezinzuzo ezinkulu zokucutshungulwa kwe-PVC: ukunciphisa izinga lokushisa elincibilikayo kusho ukwelula isikhathi sokuzinza kokushisa, ukuhlinzeka ngesici sokuphepha sokusebenzisa izinto ezigaywe kabusha, nokuvumela ukucutshungulwa okwengeziwe; Amandla okushisa athuthukisiwe kanye nokunciphisa ukuphuka kwe-ncibilika, okusho ukuthi kungakhuphula isivinini sokucubungula, ukusheshisa ukudonsa, futhi kuthuthukise ikhwalithi ebonakalayo kanye nokubunjwa; Kuthuthukiswe ukufana kokuncibilika, okunganciphisa ama-ripples angaphezulu kanye nokugqabuka kwento ekhishiwe, ngaleyo ndlela kwandise ukukhiqiza, kuthuthukise i-ductility kanye ne-thermoformability.
Isikhathi sokuthumela: Sep-05-2024
