Resin PVC da aka samu daga polymerization yana da matuƙar rashin ƙarfi saboda ƙarancin kwanciyar hankali na zafi da kuma yawan narkewar sa. Yana buƙatar a gyara shi kafin a sarrafa shi zuwa samfuran da aka gama. Ana iya inganta/gyara halayensa ta hanyar ƙara wasu ƙarin abubuwa, kamar su masu daidaita zafi, masu daidaita UV, masu daidaita filastik, masu gyara tasirin, masu cikawa, masu hana harshen wuta, pigments, da sauransu.
Zaɓin waɗannan ƙarin abubuwa don haɓaka halayen polymer ya dogara da buƙatun aikace-aikacen ƙarshe. Misali:
1. Ana amfani da filastik (Phthalates, Adipates, Trimellitate, da sauransu) a matsayin abubuwan da ke tausasawa don haɓaka aikin rheological da na injiniya (ƙarfin, tauri) na samfuran vinyl ta hanyar ƙara zafin jiki. Abubuwan da ke shafar zaɓin filastik don polymer ɗin vinyl sune: Dacewar polymer; ƙarancin canjin yanayi; farashi.
2. PVC yana da ƙarancin kwanciyar hankali na zafi kuma masu daidaita abubuwa suna taimakawa wajen hana lalacewar polymer yayin sarrafawa ko fallasa shi ga haske. Idan aka yi masa zafi, mahaɗan vinyl suna fara amsawar dehydrochlorination mai saurin hanzartawa kuma waɗannan masu daidaita abubuwa suna rage HCl da aka samar wanda ke haɓaka rayuwar polymer. Abubuwan da za a yi la'akari da su yayin zaɓar mai daidaita zafi sune: buƙatun fasaha; Yarda da ƙa'ida; farashi.
3. Ana ƙara masu cikawa a cikin mahaɗan PVC saboda dalilai daban-daban. A yau, mai cikewa na iya zama ƙarin aiki na gaske ta hanyar isar da ƙima ta hanyoyi sababbi da ban sha'awa a mafi ƙarancin farashin tsari. Suna taimakawa wajen: ƙara tauri da ƙarfi, inganta aikin tasiri, ƙara launi, rashin haske da watsawa da ƙari.
Sinadaran calcium carbonate, titanium dioxide, yumbu mai ƙamshi, gilashi, talc da sauransu sune nau'ikan abubuwan cikawa da ake amfani da su a cikin PVC.
4. Ana amfani da man shafawa na waje don taimakawa wajen ratsawa cikin sauƙi ta hanyar narkewar PVC ta hanyar kayan aiki. Yayin da man shafawa na ciki ke rage danko na narkewa, hana zafi sosai da kuma tabbatar da kyakkyawan launi na samfurin.
5. Ana ƙara wasu ƙarin abubuwa kamar kayan aiki na sarrafawa, masu gyara tasirin, don haɓaka halayen injiniya da saman PVC.
Lokacin Saƙo: Disamba-13-2022