Sanin asali Game da Nau'ikan Kayan PE guda uku (I)

1. High-density polyethylene (HDPE)

HDPE ba mai guba bane, mara ɗanɗano kuma mara wari, tare da yawan 0.940-0.976g/cm3.Samfurin polymerization ne a ƙarƙashin ƙananan matsa lamba a ƙarƙashin catalysis na mai kara kuzari na Ziegler, don haka babban yawa polyethylene kuma ana kiransa polyethylene low matsa lamba.

Amfani:

HDPE wani nau'i ne na resin thermoplastic tare da babban crystallinity da rashin polarity da aka kafa ta hanyar copolymerization na ethylene.Siffar ainihin HDPE fari ce mai madara, kuma tana da jujjuyawa zuwa wani yanki na bakin ciki.Yana da kyakkyawan juriya ga mafi yawan sinadarai na gida da na masana'antu, kuma yana iya tsayayya da lalata da rushewar oxidants mai ƙarfi (ƙarfafa nitric acid), salts-base salts and Organic solvents (carbon tetrachloride).Polymer ba shi da hygroscopic kuma yana da kyakkyawan juriya na tururin ruwa kuma ana iya amfani dashi don danshi da juriya.

Nasara:

Rashin hasara shi ne cewa juriyar tsufa da damuwa na muhalli ba su da kyau kamar LDPE, musamman ma thermal oxidation zai rage yawan aiki, don haka HDPE yana ƙara antioxidants da masu ɗaukar UV lokacin da aka sanya shi cikin kwandon filastik don inganta aikinsa.kasawa.

2. Low-density polyethylene (LDPE)

LDPE ba mai guba bane, mara ɗanɗano kuma mara wari, tare da yawa na 0.910-0.940g/cm3.An polymerized da oxygen ko Organic peroxide a matsayin mai kara kuzari a karkashin babban matsa lamba na 100-300MPa.Ana kuma kiransa babban matsin lamba polyethylene.LDPE gabaɗaya ana kiransa bututun PE a cikin masana'antar ban ruwa.

Amfani:

Ƙarƙashin polyethylene shine mafi sauƙi iri-iri na resin polyethylene.Idan aka kwatanta da HDPE, da crystallinity (55% -65%) da softening batu (90-100 ℃) ne m;yana da kyau sassauci, extensibility, nuna gaskiya, sanyi juriya da kuma aiwatarwa;sinadaransa Kyakkyawan kwanciyar hankali, acid, alkali da gishiri mai ruwa mai ruwa;mai kyau lantarki rufi da iska permeability;ƙarancin sha ruwa;sauƙin ƙonewa.Yana da taushi a cikin yanayi kuma yana da kyau mai kyau, rufin lantarki, kwanciyar hankali na sinadarai, aikin sarrafawa da ƙananan zafin jiki (zai iya jurewa -70 ° C).

Nasara:

Rashin hasara shine ƙarfin injinsa, shingen danshi, shingen iskar gas da juriya mara kyau.Tsarin kwayoyin halitta bai isa ba na yau da kullun, crystallinity (55% -65%) yana da ƙasa, kuma madaidaicin narkewar crystalline (108-126°C) shima ƙasa ne.Ƙarfin injinsa ya yi ƙasa da na polyethylene mai girma, kuma ƙarancin ƙarancinsa, juriyar zafi da juriyar tsufa na hasken rana ba su da kyau.Ana ƙara Antioxidants da masu ɗaukar UV don magance ƙarancinsa.