Polyethylene (PE) yawanci ana samarwa a cikin ƙasashen waje, kumaPolypropylene(PP) ana samar da shi ne a kasar Sin.Wani nau'i ne na resin thermoplastic da aka yi ta hanyar polymerization na ethylene.A cikin masana'antu, copolymers na ethylene tare da ƙaramin adadin α - olefins kuma an haɗa su.Polyethylene ba shi da wari, mara guba, waxy, tare da kyakkyawan juriya mai ƙarancin zafin jiki (mafi ƙarancin zafin jiki zai iya kaiwa - 70 ℃ - 100 ℃), kwanciyar hankali mai kyau na sinadarai, juriya ga mafi yawan acid da yashwar alkali (ba mai jurewa ga acid oxidizing), wanda ba zai iya narkewa a cikin kaushi gabaɗaya. a dakin da zafin jiki, ƙananan shayar ruwa da kuma kyakkyawan rufin lantarki;amma polyethylene yana da matukar damuwa ga matsalolin muhalli (sunadarai da aikin injiniya) Ƙarfin tsufa na zafi ba shi da kyau.Abubuwan da ke cikin polyethylene sun bambanta daga iri-iri zuwa iri-iri, galibi dangane da tsarin kwayoyin halitta da yawa.Daban-daban yawa (0.91-0.96 g / cm3) na samfurori za a iya samu ta hanyoyi daban-daban na samarwa.
Ana iya sarrafa polyethylene ta hanyar yin gyare-gyare na gabaɗaya thermoplastic (duba aikin filastik).An yi amfani da ko'ina a cikin yin fina-finai, kwantena, bututu, monofilaments, wayoyi da igiyoyi, yau da kullum bukatun, da dai sauransu shi kuma za a iya amfani da a matsayin high-mita insulating kayan don TV, radar, da dai sauransu Tare da ci gaban petrochemical masana'antu, da samar. na polyethylene ya ci gaba da sauri, kuma abin da aka fitar ya kai kimanin 1/4 na jimlar kayan aikin filastik.A cikin 1983, jimillar ƙarfin samar da polyethylene a duniya shine 24.65 MT, kuma ƙarfin injin da ake ginawa shine 3.16 Mt.
Polypropylene(PP)
Gudun thermoplastic da aka samu ta hanyar polymerization na propylene.Akwai jeri guda uku na abubuwan isotactic, bazuwar abu da abun syndiotactic.Abun isotactic shine babban bangaren samfuran masana'antu.PolypropyleneHakanan ya haɗa da copolymers na propylene tare da ƙaramin adadin ethylene.Yawancin lokaci mai ƙarfi mara launi mara launi, mara wari mara guba.Saboda da na yau da kullum tsarin da high crystallization, da narkewa batu ne kamar yadda high as 167 ℃, da kuma kayayyakin za a iya haifuwa da tururi.Girman shine 0.90g/cm3, wanda shine mafi ƙarancin filastik gabaɗaya.Rashin juriya, ƙarfin 30MPa, ƙarfin ƙarfi, tsauri da nuna gaskiya sun fi polyethylene kyau.Rashin hasara shine rashin juriya mai ƙarancin zafin jiki da sauƙin tsufa, wanda za'a iya shawo kan su ta hanyar gyare-gyare da ƙara antioxidant bi da bi.
Launi nasaƙa jakunkunagabaɗaya fari ne ko launin toka, ba mai guba da ɗanɗano ba, kuma gabaɗaya ba shi da illa ga jikin ɗan adam.Duk da cewa an yi ta da robobin sinadarai iri-iri, amma kare muhalli yana da ƙarfi, kuma ƙarfin sake yin amfani da shi yana da girma;
Jakunkuna masu sakawas ana amfani da su sosai, galibi don tattarawa da tattara abubuwa daban-daban, kuma ana amfani da su sosai a masana'antu;
Filastiksaƙa jakunkunaan yi shi daPolypropyleneguduro a matsayin babban ɗanyen abu, wanda ake fitar da shi kuma a shimfiɗa shi a cikin filament mai laushi, sa'an nan kuma a yi shi da jaka.
Haɗaɗɗen filastiksaƙa jakunkunaan yi shi da zanen filastik ta hanyar simintin faifai.
Ana amfani da wannan jerin samfuran don shirya foda ko granular m kayan da m articles.Filastik ɗin da aka haɗasaƙa jakunkunaan kasu kashi biyu a cikin jaka daya da uku a cikin jaka daya bisa ga babban abun da ke ciki.
Dangane da hanyar dinkin, ana iya raba shi zuwa jakar dinki na kasa, jakar kasa ta dinki, jakar saka da jakar dinki mai mannewa.
Dangane da ingantacciyar nisa na jakar, ana iya raba ta zuwa 350, 450, 500, 550, 600, 650 da 700mm, kuma ƙayyadaddun ƙayyadaddun ƙayyadaddun buƙatun za su yarda da mai siyarwa da mai nema.
Lokacin aikawa: Mayu-10-2021