Yin amfani da pelletizing na PE, me zan yi don magance narkewar da ba ta da tabbas?

1. Ma'aunin Narkewa

Ana yawan bayyana ma'aunin narkewar abinci ta hanyar amfani da MI kuma yanzu an san shi a duniya a matsayin ƙimar kwararar narkewa, wanda aka bayyana a matsayin MFR.

Ana amfani da shi a matsayin ma'auni don sarrafa ingancin resin thermoplastic da kuma yanayin tsarin ƙera thermoplastic. Yana da ƙimar nauyin narkewar da ke gudana ta cikin babban capillary a takamaiman zafin jiki da kuma nauyin da ke ci gaba da aiki, wanda galibi ana bayyana shi a cikin g/minti 10. Ma'aunin narkewa siga ne da ake amfani da shi don bambance ruwan kayan thermoplastic daban-daban a yanayin narkewar su.

Don wannan resin, ana iya amfani da ma'aunin narkewa don kwatanta nauyin kwayoyin halittarsa ​​a matsayin sarrafa ingancin samarwa.

Gabaɗaya, ga resins masu wani tsari na sinadarai, a. ƙaramin ma'aunin narkewa, girman nauyin kwayoyin halitta, mafi girman ƙarfin karyewa, tauri, tauri, kwanciyar hankali na tsufa da sauran halaye an inganta su; b. yayin da ma'aunin narkewar ya yi girma, nauyin kwayoyin halitta ƙarami ne, kuma ƙarfin kwararar ya fi kyau idan aka samar da shi.

Robobin da aka sake yin fa'idasaboda ƙarin ƙazanta, yanayi mara tabbas, wanda ke haifar da yawan damuwa, kayan zai sami ƙarin lahani bayan ƙera, yana shafar ingancin samfur, yadda ake sarrafa fitowar yatsan narkewa samfura masu kyau?

2. Narkewa daban-daban, buƙatar bambancewa

1) Ana samun ma'aunin resin HDPE a cikin ƙera allura, ƙera busa, ƙera juyawa da fim, kuma ma'aunin narkewarsu ya bambanta.
a. HDPE mai ƙarfin gaske da kuma matakin fim zai sami ƙaramin yatsan narkewa, gabaɗaya ƙasa da 2;
b. Yatsar narkewar da za a yi amfani da ita wajen yin allurar za ta fi 2 girma kuma za ta iya kaiwa goma da dama.
Wannan yana buƙatar sake amfani da kayan aiki daban-daban, tare da ɗaukar buƙatu daban-daban ga kowane kayan da aka sarrafa.

3. Kayan yatsu masu narkewa tare da haɗin gwiwa

Da farko, ana iya allurar da aka yi wa busa kai tsaye, yayin da ba za a iya amfani da waɗanda aka yi wa allurar don yin busa ba.
Hanya ɗaya tilo da za a iya mayar da babban ma'aunin narkewar HDPE zuwa ƙaramin ma'aunin narkewar HDPE ita ce a nemo hanyar ƙara nauyin kwayoyin halitta, wanda ya fi wahalar yi kawai ta hanyar ƙara nauyin kwayoyin halitta, wanda ya haɗa da sinadarai na polymer kuma yana iya zama da wahala a yi aiki da shi.
Mafita mai sauƙi kawai ita ce a yi amfani da kayan HDPE tare da ƙarancin narkewa fiye da yadda ake buƙata sannan a haɗa shi da wani rabo tare da babban ma'aunin narkewa na yanzu HDPE, ma'aunin narkewa da ke bayyane zai zama matsakaicin ƙimar kayan albarkatun guda biyu.

4. Abubuwan haɗa polymer

Akwai wani ƙari da ake kira narke yatsan hannu, wanda kuma aka sani da polymeric binder.
Wani nau'in gyaran sarrafawa ne na samfuran polyolefin da aka haɓaka don tsarin tsarin kwayoyin halitta na samfuran polyolefin. Yana haɗa polymers na polyolefin yadda ya kamata ta hanyar dabarun haɗin kai daban-daban, don haka yana ƙara jan hankali tsakanin sassan sarkar polymer (watau ƙarfin van der Waals).

Wannan tsarin gyara yana mayar da kaddarorin kayayyakin polyolefin da suka lalace kaɗan zuwa ga halayensu kafin karyewa, tare da ci gaba mai mahimmanci a cikin kaddarorin mutum ɗaya dangane da adadin da aka ƙara.

Aikinsa shine ya gyara tasirin dashen dashen da kuma shawo kan gazawar kayan aikin injiniya na gargajiya da rashin isasshen ruwa. POE wani ɗan gajeren reshe ne na thermoplastic elastomer tare da rarrabawar ƙwayoyin halitta iri ɗaya wanda Kamfanin DOW Chemical Company ya haɗa a Amurka ta amfani da metallocenes a matsayin abubuwan kara kuzari, kuma manyan kaddarorinsa suna da ban mamaki, kamar ƙarfin tauri, ƙarfin tsagewa da sauran manyan kaddarorin injiniya an inganta su idan aka kwatanta da kayan roba na gargajiya.