Gabaɗaya magana, launin rawaya na samfuran filastik yana faruwa ne sakamakon tsufa ko lalata kayan.Gabaɗaya,PPtsufa ne ke haifar da shi (degraderation).Saboda kasancewar ƙungiyoyin gefe akan polypropylene, kwanciyar hankali ba shi da kyau, musamman a yanayin haske.Gabaɗaya, ana ƙara stabilizer haske.Amma game daPE, Tun da babu tushe na gefe, babu lokuta da yawa na yellowing a cikin aikin gaba ɗaya ko amfani da wuri.PVCzai juya rawaya, wanda ke da alaƙa da tsarin samfurin.Don sanya shi a hankali, shi ne oxidation.Fuskar wasu masterbatches yana da sauƙi don zama oxidized, don haka ya zama dole don aiwatar da jiyya a kan masterbatches.
Bugu da ƙari, da miyagun additives da ƙazanta a cikin tsarin, ina tsammanin an fi haifar da su ta hanyar tsufa.Ƙara tsarin antioxidant masu dacewa da magungunan ultraviolet na iya inganta launin rawaya na PE da PP, amma yawancin tsarin maganin antioxidant na phenolic da kansu zai kawo launin rawaya kadan.Bugu da ƙari, wasu tsarin antioxidant da magungunan anti ultraviolet suna da tasirin juriya, don haka kula lokacin amfani da su.Ana ƙara man shafawa na polymer don samar da fim ɗin polymer fluoropolymer mai gudana akan bangon injin, haɓaka aikin sarrafa extrusion, matsa lamba da zafin aiki na guduro polyolefin, haɓaka ingancin samfura da yawan aiki, rage farashin samarwa, rage ko kawar da karyewar narkewa, da rage raguwa. ƙimar.
1.Akwai wani danyen abu mai suna plasticizer a cikin kayayyakin robobi, wanda galibi yana taka rawa wajen hana tsufa, amma sai ya rinka juyewa a iska, don haka idan aka rage ruwan roba sai launin ya shude, kuma elasticity na roba shima zai ragu. , wanda zai sa ya gaji da rawaya.
2. Yin rawaya na akwatunan filastik bayan samarwa ko amfani da su na dogon lokaci shine saboda tsufa na kayan da aka yi amfani da su, ko kuma ana iya samarwa bayan lalacewa.Babban abin da ya fi daukar hankali shi ne wasu fararen akwatunan filastik, kamar wasu akwatunan canza launin fari da ganga na roba.
3. Dalilin gama gari shine tsufa na samfuran filastik.Dalilin shi ne cewa polypropylene yana da harin gefen sama.Kwanciyarsa ba ta da kyau sosai, musamman a yanayin bushewa na dogon lokaci.
4. Saboda haka, don yin farin robobi na dogon lokaci, yi ƙoƙarin kauce wa haske mai ƙarfi.Idan yana da alaƙa da abinci, gwada amfani da robobi masu haske da marasa launi.Idan kana so ka kawar da wannan al'amari, za ka iya ƙara wani adadi mai santsi.
Lokacin aikawa: Satumba-09-2022