HDPE
Yakakwirira-density polyethylene (HDPE) kana polyethylene yakakwira-density (PEHD) Riri polyethylene thermoplastic yakagadzirwa kubva peturu. Dzimwe nguva inonzi "alkathene" kana "polythene" painoshandiswa pombi. Nesimba rakakwira-kune-kuwanda chiyero, HDPE inoshandiswa mukugadzira mabhodhoro epurasitiki, kupora-inodzivirira pombi, geomembranes, uye mapuranga epurasitiki. HDPE inowanzo shandiswa zvakare, uye ine nhamba "2" senhamba yayo yekutsvaga resin (yaimbozivikanwa sechiratidzo chekushandura).
Muna 2007, musika wepasi rose weHDPE wakasvika huwandu hwematani anopfuura mamirioni makumi matatu.
Properties
HDPE inozivikanwa nehukuru hwayo simba-kune-kuwanda chiyero. Kuwanda kweHDPE kunogona kubva pa0.93 kusvika ku0.97 g / cm3 kana 970 kg / m3. Kunyangwe hazvo huwandu hweHDPE hwakangokwirira zvishoma pane hweyepasi-polyethylene yakadzika, HDPE ine matavi mashoma, ichimupa akasimba masimba emasimba uye simba rakasimba kupfuura LDPE. Musiyano musimba unopfuura musiyano mukuwanda, zvichipa HDPE imwe yakakwira simba. Izvo zvakare zvakaomarara uye zvakanyanya opaque uye inogona kumira tembiricha yakati kurei (120 ° C / 248 ° F kwenguva pfupi, 110 ° C / 230 ° F ichienderera). Yakakwira-density polyethylene, kusiyana nepolypropylene, haigone kumira kazhinji inodiwa mamiriro ekugadzirisa. Kushaikwa kwebazi kunovimbiswa nesarudzo yakakodzera yechinokonzera (semuenzaniso, Ziegler-Natta catalysts) uye maitiro ekuita.
Applications
HDPE inopesana nemazhinji sol sol solts uye ine dzakasiyana siyana dzekushandisa:
- Swimming pombi yekuisa
- 3-D firita yekudhinda
- Arena Bhodhi (puck bhodhi)
- Backpacking mapuranga
- Ballistic mahwendefa
- mireza
- Bhodhoro kaputi
- Chemical-inodzivirira pombi
- Coax tambo yemukati insulator
- Chikafu chekuchengetedza midziyo
- Mafuta matangi emota
- ngura kuchengetedzwa kwepombi dzesimbi
- Huru Hovercraft; kunyange zvakadaro zvinorema kwazvo kuita kwakanaka
- Magetsi uye mabhokisi emvura
- Kure-IR lenses
- Folding macheya nematafura
- Geomembrane ye hydraulic application (seyakaita se canari uye kusimbiswa kwebhangi) uye kemikari mune
- Geothermal kupisa kupisa pombi masisitimu
- Heat inodzivirira moto firework
- * Yokupedzisira yeshangu
- Natural gasi kugovera pombi masisitimu
- Fireworks
- Mabhegi epurasitiki
- Plastiki mabhodhoro yakakodzera ese ari maviri ekudzokororazve (senge mukaka jugs) kana kushandiswazve
- Plastiki danda
- Kuvhiyiwa kwepurasitiki (skeletal and kumeso kwechidzoreso)
- Midzi chipingamupinyi
- Njodzi dzechando uye mabhokisi
- Stone paper
- Kuchengeta sheds
- Telecom ducts
- Tyvek
- Mapaipi emvura emapaipi emvura epamhepo uye maitiro ekurima
- Wood mapurasitiki mapurasitiki (kushandisa polyers yakagadzirwazve)
HDPE ino shandiswazve masero liners mune subtitle D hutsanana landfill, mune yakakura masheti e HDPE ari extrusion kana wedge yakachinjirwa kuti iite homogenible inopesana nemakemikari chipingamupinyi, nechinangwa chekudzivirira kusvibiswa kwevhu uye pasi pevhu nematunhu emvura emasimba. marara.
HDPE inosarudzwa neiyo pyrotechnics kutengeserana kwematuru pamusoro pesimbi kana PVC machubhu, achigara zvakanyanya uye akachengeteka. HDPE inowanzo kubvarura kana kubvarura mukusagadzikana pachinzvimbo chekupwanya nekuva shinda senge zvimwe zvigadzirwa.
Makaka ejugs uye zvimwe hollow zvinhu zvakagadzirwa kuburikidza kupora kuumbwa ndiyo inonyanya kukosha nzvimbo yekushandisa yeHDPE, kuverenga chikamu chimwe muzvitatu chekugadzirwa kwepasirese, kana anopfuura mamirioni masere ematani. Pamusoro pekushandiswazve uchishandisa zvakajairika maitiro, HDPE inogona zvakare kugadziriswa nekudzokorora zvakare kuita filament ye8-D maprinta kuburikidza nekuparadzira marara. Pane humwe humbowo hwekuti iyi nzira yekushandisazve ishoma simba zvakanyanya pane yakajairwazve kudzokorodza, iyo inogona kusanganisira yakakura irimo simba rekufambisa.
Pamusoro pazvose, China, uko mabhodhoro ezvinwiwa akagadzirwa kubva kuHDPE akatanga kupinzwa mu2005, musika uri kukura wekuomarara kweHDPE kurongedza, semhedzisiro yekuvandudza mararamiro. MuIndia nedzimwe nyika dzine vanhu vazhinji, dzichiri kusimukira, kuwedzera kwezvivakwa kunosanganisira kuendeswa kwepombi uye kuputira tambo kunoitwa kubva kuHDPE. Izvo zvinhu zvakabatsirwa kubva mukukurukurirana nezve zvinogona kuitika zvehutano pamwe nezvinetso zvemhoteredzo zvinokonzerwa nePVC nePolycarbonate inosanganisirwa Bisphenol A, pamwe nezvakanakira pamusoro pegirazi, simbi, uye kadhibhodhi.