Pulasitiki ya Polyethylene (PE)

* PE ndi pulasitiki ya polyethylene, yomwe ingapangidwe kukhala filimu ya pulasitiki, matumba apulasitiki ndi zigawo zosiyanasiyana. Pofuna kuchepetsa kuipitsa koyera, zinthu zowononga zitha kuwonjezeredwa ku pulasitiki kuti zikwaniritse cholinga chowononga mwachangu, mtundu uwu wa polyethylene umatchedwa pulasitiki yosamalira chilengedwe. Ndi yopepuka, yolimba, komanso imodzi mwa pulasitiki yopangidwa kwambiri.

* Zinthu kapena zida zapulasitiki za PE zomwe zasinthidwa

WOLIMBA

CHOSAGWIRA NTCHITO

MAKHALIDWE ABWINO A MAGETSI

Kodi pulasitiki ya PE ndi chiyani?

Polyethylene yotchedwa PE, ndi utomoni wa thermoplastic wopangidwa ndi polymerization ya ethylene, ndi kapangidwe ka mankhwala osavuta kwambiri a polymer organic, PE yogwiritsidwa ntchito kwambiri padziko lonse lapansi polyethylene polymerization ya ethylene, malinga ndi kuchulukana kosiyanasiyana komwe kumagawidwa mu polyethylene yapamwamba kwambiri, polyethylene yapakatikati ndi polyethylene yotsika kwambiri.

Polyethylene ndi yopanda fungo, si poizoni, imamveka ngati sera, imakhala ndi kukana kutentha kochepa (kutentha kotsika kwambiri komwe kumagwiritsidwa ntchito mpaka -100 ~ -70 ° C), imakhala yolimba bwino pa mankhwala, imatha kupirira ma acid ndi alkali ambiri (osalimbana ndi okosijeni wa asidi). Sisungunuka mu zosungunulira zonse kutentha kwa chipinda, imayamwa madzi pang'ono, imateteza bwino magetsi.

Kodi PE imapangidwa bwanji?

Polyethylene imapangidwa kuchokera ku polymerization ya ethylene (kapena ethene) monomer. Maunyolo a PE amapangidwa ndi kuwonjezera kapena radical polymerization. Njira zomwe zingatheke zopangira ndi izi:

Ziegler-Natta Polymerization ndi

Kukonza kwa Metallocene

Kodi ma resin a PE ndi oopsa?

Polimba, Polyethylene imaonedwa kuti ndi yotetezeka komanso yopanda poizoni. Ikhoza kukhala poizoni ngati itapumidwa ndi/kapena kuyamwa ngati nthunzi kapena madzi (monga, panthawi yopanga).

Kodi mitundu yofala ya PE ndi iti?

Kutengera kuchuluka kwake ndi nthambi zake, magiredi osiyanasiyana a PE amatha kukhala ndi magwiridwe antchito osiyana kwambiri.

Chifukwa chake, magiredi a PE amagawidwa motere.

Mabaibulo Ogawika

Polyethylene yotsika kwambiri (LDPE)

Polyethylene yotsika kwambiri (LLDPE)

Mabaibulo Olunjika

Polyethylene yochuluka kwambiri (HDPE)

Polyethylene yolemera kwambiri (UHMWPE)

Polyethylene yolumikizidwa ndi mtanda (PEX kapena XLPE)

Kuphatikiza apo, mitundu ina ya PE imapezekanso monga:

Polyethylene yapakatikati (MDPE)

Polyethylene yotsika kwambiri (ULDPE)

Polyethylene yolemera kwambiri (HMWPE)

Metallocene polyethylene (mPE)

Polyethylene yopangidwa ndi chlorine (CPE)

Yambani ndi mtengo waulere nthawi yomweyo!

Zonse zomwe zakwezedwa ndi zotetezeka komanso zachinsinsi

CHOSANGALATSA CHA MACHITIDWE MALANGIZO A UINJINIYA

Kodi mungayerekezere bwanji mitundu ikuluikulu ya PE?

	LDPE	LLDPE	HDPE
Dzina Lonse la Polymer	Polyethylene Yochepa Kwambiri	Polyethylene Yotsika Kwambiri Yopingasa	Polyethylene Yochuluka Kwambiri
Kapangidwe	Mlingo wapamwamba wa unyolo waufupi nthambi + nthambi zazitali	Kuchuluka kwa nthambi zazifupi za unyolo	Linear (kapena digiri yochepa ya nthambi zazifupi za unyolo)
Chothandizira ndi njira	Kugwiritsa ntchito radical polymerization pogwiritsa ntchito njira ya tubular kapena njira ya autoclave	Kugwiritsa ntchito Ziegler-Natta catalyst kapena metallocene catalyst	Chothandizira cha Ziegler-Natta mu: - Kupolima kwa gawo limodzi - Polymerization ya magawo ambiri kapena chothandizira cha mtundu wa Cr kapena Phillips
Kuchulukana	0.910-0.925 g/cm3	0.91-0.94 g/cm3	0.941-0.965 g/cm3
Kukongola kwa kristalo	Makristalo otsika komanso okwera wosaoneka bwino (wosakwana 50-60% crystalline)	Semi-crystalline, mulingo wake uli pakati pa 35 ndi 60%.	Makristalo okwera komanso otsika amorphous (>90% crystalline)
Khodi Yobwezeretsanso Zinthu
Makhalidwe	Kusinthasintha komanso kuwonekera bwino Makhalidwe abwino oletsa chinyezi Mphamvu yogwira ntchito kwambiri kutentha kochepa Kukana bwino kwambiri ma acid, ma bases ndi mafuta a masamba	Poyerekeza ndi LDPE, ili ndi: mphamvu yayikulu yokoka kukhudzidwa kwakukulu ndi kukana kubowoka	Kukana kwabwino kwambiri kwa mankhwala Mphamvu yayikulu yokoka Katundu wabwino kwambiri woteteza chinyezi Zovuta kusinthasintha pang'ono
Mapulogalamu Onse	Kukulunga pang'ono, mafilimu, mabotolo otha kufinyidwa matumba a zinyalala, zomangira zotulutsira, ndi laminate	Matumba ogwira ntchito bwino, mafilimu opumulira, mafilimu olekanitsa matayala, zoyikamo zinthu zamafakitale, mafilimu otanuka, matumba a ayezi, matumba owonjezera ma CD ndi matumba a zinyalala	Kugawa kulemera kwa mamolekyulu ndi kochepa, kumagwiritsidwa ntchito mu jekeseni kapena ulusi wosalala, ndi mtundu womaliza Kugawika kwa kulemera kwa mamolekyulu ndi kwakukulu, kumagwiritsidwa ntchito popanga zinthu zopangidwa ndi filimu, zinthu ndi mapaipi apulasitiki opanda kanthu

Kodi HDPE ndi yotani?

1. Polyethylene ndi ufa woyera wotentha, wopanda fungo, wopanda kukoma, komanso wopanda poizoni.

2. Kusungunuka kwa polyethylene ndi 100-130C - kukana kwake kutentha kochepa ndikwabwino kwambiri.

3. Polyethylene ili ndi kukhazikika kwabwino kwa mankhwala ndipo imalimbana ndi asidi ya nitric yochepetsedwa, asidi ya sulfuric yochepetsedwa, asidi ya hydrochloric, asidi ya hydrofluoric, asidi ya phosphoric, asidi ya formic, asidi ya acetic, ammonia, amines, hydrogen peroxide, sodium hydroxide, potassium hydroxide ndi mayankho ena kutentha kwa chipinda.

4. Polyethylene ndi yosavuta kujambulidwa ndi kuwala kwa dzuwa, kutentha kwa dzuwa, kuwonongeka kwa ozone, komanso kuwonongeka mosavuta chifukwa cha kuwala kwa ultraviolet.

5. Kutentha kosalekeza: -50 ° C mpaka +60 ° C, chinthu cholimba chomwe chili ndi mphamvu zothandiza kutentha

6. Polima yotsika mtengo yokhala ndi kuthekera kokonza bwino

7. Kuchepa kwambiri kwa madzi

Ndi mtundu wanji wa PE womwe ungabwezeretsedwenso?

Khodi Yozindikiritsa Resin ya mitundu iwiri ikuluikulu ya PE ndi iyi:

LDPE ndi HDPE sizimawola mwachilengedwe. Zimathandizira kwambiri ku zinyalala za pulasitiki padziko lonse lapansi. Mitundu yonse iwiri ya PE imatha kubwezeretsedwanso. Imagwiritsidwa ntchito popanga mabotolo a zinthu zomwe si chakudya, mapulasitiki ogwiritsidwa ntchito panja, zitini za manyowa, ndi zina zotero.

Ntchito Zopezeka Pa Pulasitiki Yapaintaneti

Zogulitsa zomalizidwa

Chinthu chimodzi chokha chopangidwa ndi zinthu za PE, monga zinthu zokongoletsera, zitini za zinyalala, ndi zina zotero.

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