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LDPE apolyethylene low-yawa, wanda aka shirya ta hanyar polymerization na ethylene monomer catalyzed ta mai ƙaddamar da radical kyauta kuma baya ƙunshi kowane copolymer.Its kwayoyin halaye ne quite high branching digiri, tare da babban adadin dogon branched sarƙoƙi, saboda da juna entanglement na kwayoyin sarƙoƙi, sabõda haka, ta taurin ne matalauta, ba zai iya zama babban rabo daga stretch, low tasiri ikon.

A lokaci guda kuma, saboda babban digirinsa na reshe, yana da ƙarfin narkewa, wanda ke taka muhimmiyar rawa wajen daidaita kumfa na membrane.Saboda da unwinding na kwayoyin a cikin aiwatar da karfi, yana da fili karas thinning halaye, da kuma narke danko ne ƙwarai rage a high karfi, wanda ya kawo mai kyau extrusion aiki yi, bayyana a matsayin ƙananan narke matsa lamba, ƙananan narke zafin jiki da kuma mota load. .

Saboda halayen da ke sama, ana iya amfani da LDPE da sassauƙa a cikin ƙirar ƙira don cimma aikin da ake so.Akwai manyan abubuwa kamar haka:

1. Inganta aikin injin

Tare da karuwar buƙatun kasuwa don marufi, yin amfani da metallocene shima ya fi girma, kodayake aikin metallocene yana da kyau sosai, amma sarrafa shi sau da yawa haƙarƙarin sa mai laushi, yawanci a cikin tsari na extrusion don samar da zafi mai yawa, matsa lamba. yana ƙaruwa, yawan zafin jiki ya tashi, kumfa membrane ba shi da kwanciyar hankali.Ana iya inganta wannan ta hanyar haɗakar da LDPE, ƙimar ƙarawa zai iya zama 15-30%, idan adadin ƙari ya yi yawa, zai shafi kai tsaye kayan aikin jiki na ƙarshe na fim ɗin, wanda ya buƙaci daidaitawa.

2. Inganta aikin gani

Wasu fina-finai suna da wasu buƙatu don abubuwan gani.LLDPE Linear ko metallocene yana da kaddarorin gani na gabaɗaya, musamman saboda girman kristal na ciki ya yi girma.Idan 5-15% LDPE aka ƙara da shi, zai taimaka rage girman crystal na ciki, don inganta hazo da kuma bayyana gaskiya.

3. Inganta aikin hatimin zafi

Ayyukan rufewar thermal na layi ko metallocene LLDPE ya fi na LDPE kyau.Duk da haka, saboda tsarin babban reshe digiri da kuma babban narke danko a low karfi, LDPE iya hana zafi sealing lahani lalacewa ta hanyar wuce kima extrusion na zafi sealing fim a lokacin zafi sealing.A lokaci guda, adadin da ya dace na LDPE zai iya inganta ƙarfin haɗin kai na thermal, amma adadin bai kamata ya yi yawa ba.In ba haka ba, zai sa hatimin zafi ya fi muni.

4. Sauran ingantaccen aiki

Alal misali, a cikin fim din raguwa don inganta haɓakar thermal shrinkage da raguwa;Ana iya inganta al'amuran alamar damisa ta hanyar iska mai iska.Don inganta abin da ke faruwa a wuyansa a cikin fim ɗin ƙaddamarwa;A cikin fim din greenhouse don inganta kwanciyar hankali na kumfa mai kumfa don cimma babban sikelin samar da membrane, da sauransu.

Ana iya ganin cewa LDPE tana taka rawar da ba dole ba a cikin ƙirar ƙirar fina-finai na bakin ciki saboda tsarin kwayoyin halitta na musamman, da haɗin kai tare da sauran kayan polymer na iya cimma haɓakar ƙira da haɓaka aiki.