I-HDPE
I-polyethylene ephezulu kakhulu (I-HDPE) noma polyethylene high-kwabantu (I-PEHD) Kuyinto i-polyethylene i-thermoplastic yenziwe ngophethiloli. Ngezinye izikhathi ibizwa nge- “alkathene” noma i- “polythene” uma isetshenziselwa amapayipi. Ngesilinganiso esiphakeme samandla kuya kokuminyana, i-HDPE isetshenziswa ekukhiqizeni i- amabhodlela epulasitiki, amapayipi amelana nokugqwala, ama-geomembranes, ne- izinkuni zepulasitiki. I-HDPE ivame ukusetshenziswa kabusha, futhi inenombolo engu- “2” njengekhodi yayo yokuhlonza i-resin (eyayaziwa ngaphambili njengophawu lokuphinda isebenze).
Ngo-2007, imakethe ye-HDPE yomhlaba wonke yafinyelela umthamo wamathani angaphezu kwezigidi ezingama-30.
Izakhiwo
I-HDPE yaziwa ngesilinganiso sayo esikhulu samandla kuya kwesisindo. Ubuningi be-HDPE bungaba kusuka ku-0.93 kuye ku-0.97 g / cm3 noma 970 kg / m3. Yize ubukhulu be-HDPE buphakeme kakhulu uma kuqhathaniswa ne-polyethylene esezingeni eliphansi, i-HDPE ine-branching encane, iyinika amandla e-intermolecular aqine namandla we-tensile kune-LDPE. Umehluko ngamandla weqa umehluko wobukhulu, unikeza i-HDPE amandla athile aphezulu. Kubuye kube nzima futhi kube opaque futhi kungamelana namazinga okushisa aphakeme kakhulu (120 ° C / 248 ° F isikhathi esifushane, 110 ° C / 230 ° F ngokuqhubekayo). I-polyethylene ephakeme kakhulu, ngokungafani ne-polypropylene, ayikwazi ukumelana nezimo ezivamile zokuzenzakalela. Ukuntuleka kwamagatsha kuqinisekiswa ngokukhethwa okufanele kwe-catalyst (isb, IZiegler-Natta catalysts) nezimo zokuphendula.
Izicelo
I-HDPE imelana nezinto eziningi ezahlukahlukene futhi inezinhlobonhlobo zezicelo:
- Ukufakwa echibini lokubhukuda
- 3-D Isihlungi sephrinta
- I-Arena Board (ibhodi le-puck)
- Uhlaka lokubuyisela emuva
- Amapulangwe e-Ballistic
- amabhanela
- Amabhodlela amabhodlela
- Amapayipi amelana namakhemikhali
- Coax ikhebula elingaphakathi lokuvikela
- Izitsha zokugcina ukudla
- Amathangi kagesi wezimoto
- ukugqwala ukuvikelwa kwamapayipi wensimbi
- Ukuzilawula komuntu siqu; yize kusinda kakhulu ekusebenzeni kahle
- Amabhokisi kagesi nawokudonsa ngamapayipi
- Ama-lens we-IR-IR
- Ukugoqa izihlalo namatafula
- I-Geomembrane yezinhlelo zokusebenza ze-hydraulic (njengemisele nokuqiniswa kwebhange) nokuqukethwe kwamakhemikhali
- Izinhlelo zokudlulisela ukushisa ngamaphayiphi we-Geothermal
- Izikhuni zomlilo ezingamelana nokushisa
- * Okokugcina ezicathulweni
- Amasistimu wokusabalalisa igesi yemvelo
- Umlilo
- Izikhwama zepulasitiki
- Amabhodlela epulasitiki kufanelekile kokubili ukuphinda kusetshenziswe kabusha (njengamajagi obisi) noma ukusetshenziswa kabusha
- Izinkuni zepulasitiki
- Ukuhlinzwa ngopulasitiki (ukwakhiwa kabusha kwamathambo nobuso)
- Isithiyo sezimpande
- Ojantshi beqhwa namabhokisi
- Iphepha lephepha
- Ukulondolozwa
- Ama-Telecom ducts
- ITyvek
- Amapayipi amanzi okuhanjiswa kwamanzi ezindlini nezinqubo zezolimo
- Izinhlanganisela zepulasitiki zokhuni (zisebenzisa ama-polymers asetshenzisiwe)
I-HDPE futhi isetshenziselwa ama-cell liners ekugcwalisweni komhlaba okufakwayo okufakwe ngaphansi kwe-D, lapho amashidi amakhulu e-HDPE kungathiwa ayakhipha noma agwetshwe ukuze enze isithiyo esingamvikeli samakhemikhali, ngenhloso yokuvimbela ukungcoliswa komhlaba kanye namanzi angaphansi komhlaba yizindawo eziwuketshezi eziqinile. imfucuza.
I-HDPE ikhethwa ukuhweba nge-pyrotechnics kokwenza izikelezeli ngaphezulu kwensimbi noma amashubhu e-PVC, okuhlala isikhathi eside futhi iphephe kakhulu. I-HDPE ivame ukuklebhula noma ukudabula ukungasebenzi kahle esikhundleni sokubhubhisa bese iba yisiqeshana esifana nezinye izinto.
Amajagi obisi nezinye izinto eziyize ezakhiwe lapho shaya ukwakha yiyona ndawo ebaluleke kunazo zonke yokufaka isicelo se-HDPE, ukubalwa kwengxenye eyodwa kwezintathu zokukhiqizwa komhlaba wonke, noma ngaphezu kwamathani ayisigidi esingu-8. Ngaphezu kokuphinda kusetshenziswe kabusha kusetshenziswa izinqubo ezijwayelekile, i-HDPE nayo ingacutshungulwa ngokusetshenziswa kabusha kwezifilakisi zibe yimicu yamaphrinta ama-3-D ngokusebenzisa kabusha okusatshalalisiwe. Kunobufakazi obuthile bokuthi le ndlela yokuphinda isetshenziswe ingamandla amancane kuneyokusebenzisa kabusha okuvamile, okungabandakanya amandla amakhulu ahlanganisiwe wezinto zokuhamba.
Ngaphezu kwakho konke, iChina, lapho amabhodlela eziphuzo enziwa nge-HDPE angeniswa okokuqala ngo-2005, iyimakethe ekhulayo yokupakisha okuqinile kwe-HDPE, ngenxa yempilo yayo ethuthukiswayo. ENdiya nakwamanye amazwe anabantu abaningi, asafufusa, ukunwetshwa kwengqalasizinda kufaka ukuthunyelwa kwamapayipi kanye nokuxhunywa kwentambo okwenziwe nge-HDPE. Lokhu kwaziswa kuhlomulile ezingxoxweni mayelana nezinkinga ezikhona zezempilo nezemvelo ezibangelwa i-PVC nePolycarbonate ehambisana neBisphenol A, kanye nezinzuzo zayo ngaphezu kwengilazi, insimbi kanye namakhadibhodi.