HDPE
Polyethylene wapamwamba kwambiri (HDPE) kapena polyethylene mkulu-kachulukidwe (PeHD) ndi polyethylene Thermoplastic zopangidwa kuchokera ku mafuta. Nthawi zina amatchedwa "alkathene" kapena "polythene" akagwiritsa ntchito mapaipi. Ndi mphamvu yolimba kwambiri, HDPE imagwiritsidwa ntchito popanga mabotolo apulasitiki, mapaipi osagwirizana ndi kutu, geomembranes, ndi mitengo yamapulasitiki. HDPE imagwiritsidwanso ntchito mobwerezabwereza, ndipo ili ndi nambala "2" ngati nambala yake yotchulira utomoni (yomwe kale inkadziwika kuti chizindikiro chokonzanso).
Mu 2007, msika wa HDPE wapadziko lonse udafika pamatani opitilira mamiliyoni 30 miliyoni.
Zida
HDPE imadziwika ndi chiŵerengero chake chachikulu cholimba mphamvu. Kuchuluka kwa HDPE kumatha kuyambira 0.93 mpaka 0.97 g / cm3 kapena 970 kg / m3. Ngakhale kuchuluka kwa HDPE kumangocheperako pang'ono poyerekeza ndi polyethylene yotsika kwambiri, HDPE ili ndi nthambi zochepa, zomwe zimapatsa mphamvu zam'magazi komanso kulimba kwamphamvu kuposa LDPE. Kusiyana kwamphamvu kumaposa kusiyana kwa kachulukidwe, ndikupatsa HDPE mphamvu yapadera. Zimakhalanso zovuta komanso zowoneka bwino ndipo zimatha kupirira kutentha pang'ono (120 ° C / 248 ° F kwakanthawi kochepa, 110 ° C / 230 ° F mosalekeza). Mkulu-kachulukidwe polyethylene, mosiyana ndi polypropylene, sichitha kupirira momwe zimakhalira nthawi zambiri. Kuperewera kwa nthambi kumatsimikiziridwa ndi chisankho choyenera chothandizira (mwachitsanzo, Ziegler-Natta othandizira) ndi momwe angachitire.
Mapulogalamu
HDPE imagwirizana ndi ma sol sol osiyanasiyana ndipo imagwiritsa ntchito mitundu yambiri:
- Kusambira kwa dziwe
- 3-D chosindikizira
- Arena Board (puck board)
- Mafelemu obwerera kumbuyo
- Zipangizo zama Ballistic
- mbendera
- Zisoti zamabotolo
- Mapaipi osagwira mankhwala
- Coax chingwe cholowetsera mkati
- Zosungira zakudya
- Akasinja mafuta opangira magalimoto
- Dzimbiri chitetezo cha mapaipi achitsulo
- Hovercraft Yanu; ngakhale ndizovuta kwambiri kuchita bwino
- Mabokosi amagetsi ndi ojambula
- Magalasi akutali kwambiri a IR
- Pangani mipando ndi matebulo
- Geomembrane for hydraulic application (monga ngalande ndi zomanganso banki) ndi mankhwala okhala
- Makina opangira magesi otentha
- Zotenthetsa moto zosagwira moto
- * Omaliza ndi nsapato
- Makina opangira gasi achilengedwe
- Zozizira
- Matumba apulasitiki
- Mabotolo apulasitiki zabwino zonse zobwezerezedwanso (monga ma mbiya amkaka) kapena kugwiritsanso ntchito
- Matabwa apulasitiki
- Opaleshoni yapulasitiki (mafupa ndi mawonekedwe a nkhope)
- Zotchinga muzu
- Njanji zamatalala ndi mabokosi
- Mapepala a miyala
- Kusunga ma sheds
- Ma telecom amatulutsa
- Zamgululi
- Mapaipi amadzi operekera madzi am'nyumba ndi njira zaulimi
- Ma pulasitiki amitengo yamatabwa (ogwiritsa ntchito ma polima obwezerezedwanso)
HDPE imagwiritsidwanso ntchito ngati ma cell okhala munthaka D malo oyera, pomwe ma sheet akuluakulu a HDPE amawotchera kapena kuwotcha kuti apange chotchinga chosagwirizana ndi mankhwala, ndicholinga chopewa kuwonongeka kwa dothi ndi madzi apansi a nthaka zinyalala.
HDPE imasankhidwa ndi malonda a pyrotechnics othandizira anthu kupanga matayala azitsulo kapena ma PVC, kukhala olimba komanso otetezeka. HDPE imakonda kung'amba kapena kung'ambika chifukwa chogwiritsa ntchito m'malo mopunthwa ndikuyamba kukhala ngati mbande ngati zinthu zina.
Maenje amkaka ndi zinthu zina zopanda pake zopangidwa kudzera kuwomba kukuumba ndi malo ofunikira kwambiri a HDPE, kuwerengera gawo limodzi mwa magawo atatu azomwe zapangidwa padziko lonse lapansi, kapena matani oposa 8 miliyoni. Kuphatikiza pa kubwezeretsedwanso pogwiritsa ntchito njira zachilendo, HDPE itha kusinthidwa ndikubwezeretsanso mu filament ya osindikiza a 3-D kudzera pakugawana zobwezerezedwanso. Pali umboni wina wosonyeza kuti njira yobwezeretsayi siigwiritsa ntchito mphamvu zambiri poyerekeza ngati njira yobwezeretsedwera, yomwe imatha kukhala ndi mphamvu yayikulu yonyamula.
Koposa zonse, China, komwe mabotolo a zakumwa omwe amapangidwa kuchokera ku HDPE adatumizidwa koyamba ku 2005, ndi msika womwe ukukula wazinthu zolimba za HDPE, chifukwa chakukhala ndi moyo wabwino. Ku India ndi mayiko ena omwe ali ndi anthu ambiri, akutukuka, kukulitsa zomangamanga kumaphatikizanso kutumizidwa kwa mapaipi ndi zotchingira chingwe zopangidwa kuchokera ku HDPE. Zomwe zapindulazi zathandizidwa ndi zokambirana pazovuta zaumoyo komanso zachilengedwe zomwe zingayambitsidwe ndi PVC ndi Polycarbonate yogwirizana ndi Bisphenol A, komanso maubwino ake pagalasi, chitsulo, ndi makatoni.