Umlawuli we-PVC foaming angasisiza ukuthi sithole izakhiwo ezinhle ngesikhathi sokukhiqizwa nokucutshungulwa kwe-PVC, okwenza ukusabela kwethu kuqhubeke kangcono futhi kukhiqize imikhiqizo esiyifunayo. Kodwa-ke, sidinga futhi ukunaka amaphuzu amaningana okulawula izimboni lapho sikhiqiza, ukuze ukusabela kwethu kuqhubeke kangcono.
Ukubumba kwepulasitiki okunegwebu kwesilawuli segwebu se-PVC kuhlukaniswe izinqubo ezintathu: ukwakheka kwe-bubble core, ukunwetshwa kwe-bubble core, kanye nokuqina komzimba wegwebu. Kumashidi egwebu e-PVC anamakhemikhali engeziwe okunegwebu, ukunwetshwa kwe-bubble nuclei kunomthelela omkhulu kwikhwalithi yeshidi legwebu. I-PVC ingeye-molecule yeketanga eliqondile enamaketanga amafushane ama-molecule kanye namandla aphansi okuncibilika. Ngesikhathi senqubo yokwandiswa kwe-bubble core ibe amagwebu, ukuncibilika akwanele ukumboza amagwebu, futhi igesi ivame ukugcwala futhi ihlangane namagwebu amakhulu, okunciphisa ikhwalithi yomkhiqizo wamashidi egwebu.
Isici esiyinhloko ekuthuthukiseni ikhwalithi yama-PVC foaming modifiers ukuthuthukisa amandla okuncibilika kwe-PVC. Kusukela ekuhlaziyweni kwezimpawu zokucubungula zezinto ze-polymer, kunezindlela ezahlukahlukene zokuthuthukisa amandla okuncibilika kwe-PVC, kodwa indlela engcono kakhulu ukwengeza izithasiselo ezithuthukisa amandla okuncibilika futhi zinciphise izinga lokushisa lokucubungula. I-PVC ingezinto ezi-amorphous, futhi amandla ayo okuncibilika ayancipha ngokushisa okuncibilika okwandayo. Ngokuphambene nalokho, amandla ayo okuncibilika ayanda ngokushisa okuncibilika okwehlayo, kodwa umphumela wokupholisa ulinganiselwe futhi usebenza njengomsebenzi osizayo kuphela. Ama-ejenti okucubungula i-ACR wonke anomphumela wokuthuthukisa amandla okuncibilika, okwanda ngokwanda kokuqukethwe komlawuli we-foaming. Ngokuvamile, inqobo nje uma isikulufu sinekhono elanele lokuhlakaza nokuxuba, ukwengeza ama-high viscosity foaming modifiers kunomphumela obaluleke kakhulu ekuthuthukiseni amandla okuncibilika.
Lokhu okungenhla kuyisingeniso esifushane kumaphuzu abalulekile okulawulwa kwenqubo ye-foam yama-modifier e-PVC foam. Lapho siwakhiqiza, kufanele sinake ukwakheka, ukunwetshwa, kanye nokwelashwa kwama-nuclei awo e-bubble bese siwalawula ngokuqinile.
Isikhathi sokuthunyelwe: Septhemba-07-2024
