A halin yanzu, galibin pallets ɗin filastik ana yin su ne da HDPE, kuma nau'ikan HDPE daban-daban suna da halaye daban-daban. Halaye na musamman na HDPE sune haɗin da ya dace na masu canji guda huɗu na asali: yawa, nauyin kwayoyin halitta, rarraba nauyin kwayoyin halitta da ƙari. Ana amfani da masu haɓaka abubuwa daban-daban don samar da polymers na musamman na aiki. Ana haɗa waɗannan masu canji don samar da maki HDPE don dalilai daban-daban, cimma daidaito a cikin aiki.
A cikin ainihin samarwa da sarrafa pallets na filastik, ingancin waɗannan manyan masu canji yana da tasiri a kan juna. Mun san cewa ethylene shine babban kayan albarkatun polyethylene, kuma ana amfani da wasu ƙananan comonomers, kamar 1-butene, 1-hexene ko 1-octene, sau da yawa don inganta halayen polymer. Ga HDPE, abun ciki na ƙananan monomers da ke sama gabaɗaya bai wuce 1%-2%. Ƙara comonomers kaɗan yana rage crystallinity na polymer. Wannan canji gabaɗaya ana auna shi ta hanyar yawa, kuma yawa yana da alaƙa da crystallinity.
A zahiri, nau'ikan HDPE daban-daban za su haifar da bambance-bambance masu mahimmanci a cikin aikin pallets ɗin filastik da aka yi. Yawan polyethylene mai matsakaicin yawa (MDPE) ya kama daga 0.926 zuwa 0.940g/CC. Wasu rarrabuwa wani lokacin suna rarraba MDPE a matsayin HDPE ko LLDPE. Homopolymers suna da mafi girman yawa, tauri, kyakkyawan rashin ruwa da kuma mafi girman wurin narkewa.
Yawanci a lokacin da ake yin pallets na filastik, ana buƙatar wasu ƙarin abubuwa don tabbatar da aikin da ake buƙata. Amfani na musamman yana buƙatar takamaiman tsari na ƙarin abubuwa, kamar ƙara antioxidants don hana lalacewar polymer yayin sarrafawa da hana iskar shaka ta samfurin da aka gama yayin amfani. Ana amfani da ƙarin abubuwa masu hana hana lalacewa a cikin marufi da yawa don rage mannewar ƙura da datti ga kwalaben ko marufi.
Bugu da ƙari, domin tabbatar da ingancin pallets na filastik, ya kamata a ƙara mai da hankali kan marufi da adana kayan da aka yi amfani da su. Yawanci lokacin adana kayan HDPE, ana buƙatar ya kasance nesa da inda wuta ke fitowa, an rufe shi da rufi, kuma ya kamata a ajiye rumbun ajiyar a bushe da tsabta. An haramta haɗa duk wani datti, kuma an haramta shi sosai a fallasa shi ga rana da ruwan sama. Bugu da ƙari, yayin jigilar kaya, ya kamata a adana shi a cikin akwati ko ɗaki mai tsabta, busasshe kuma a rufe, kuma kada a yarda da abubuwa masu kaifi kamar ƙusa.
Lokacin Saƙo: Yuli-04-2025
