Nkhani

Kusiyana Kwakukulu-UHMW vs HDPE

UHMW ndi HDPE ndi ma polima a thermoplastic omwe ali ndi mawonekedwe ofanana.Kusiyana kwakukulu pakati pa UHMW ndi HDPE ndikuti UHMW ili ndi maunyolo aatali a polima okhala ndi zolemera kwambiri zamamolekyulu pomwe HDPE ili ndi chiŵerengero champhamvu champhamvu mpaka kachulukidwe.

UHMW imayimira Ultra High Molecular Weight polyethylene.Imatchulidwanso ndi UHMWPE.Mawu akuti HDPE akuyimira High Density Polyethylene.

Kodi UHMW ndi chiyani?

UHMW ndi ultra-high molecular weight polyethylene.Ndi mtundu wa polima thermoplastic.Polima iyi ili ndi maunyolo aatali kwambiri a polima okhala ndi mamolekyu apamwamba kwambiri (pafupifupi 5-9 miliyoni amu).Chifukwa chake, UHMW ili ndi kachulukidwe kakang'ono kwambiri ka maselo.Komabe, mawonekedwe a pawiriwa sangasiyanitsidwe ndi HDPE.

Zithunzi za UHMW

Zofunikira za UHMW ndi izi.

Ndi chinthu cholimba.

Lili ndi mphamvu zambiri

Zopanda fungo komanso zosakoma

Kukhoza kwambiri kutsetsereka

Kukaniza mng'alu

Simamatira kwambiri

Pagululi si poizoni, ndipo ndi otetezeka.

Sichimamwa madzi.

Maunyolo onse a polima mu UHMW ndiatali kwambiri, ndipo amalumikizana mbali imodzi.Unyolo uliwonse wa polima umalumikizidwa ndi maunyolo ena ozungulira polima kudzera pamagulu ankhondo a Van der Waal.Izi zimapangitsa kuti dongosolo lonse likhale lolimba kwambiri.

UHMW imapangidwa kuchokera ku polymerization ya monomer, ethylene.The polymerization wa ethylene amapanga maziko polyethylene mankhwala.Mapangidwe a UHMW ndi osiyana kwambiri ndi a HDPE chifukwa cha njira yopangira.UHMW imapangidwa pamaso pa chothandizira cha metallocene (HDPE imapangidwa pamaso pa Ziegler-Natta chothandizira).

Mapulogalamu a UHMW

Kupanga mawilo a nyenyezi

Zomangira

Zodzigudubuza

Magiya

Ma mbale otsetsereka

HDPE ndi chiyani?

HDPE ndi polyethylene yapamwamba kwambiri.Ndi thermoplastic polima zakuthupi.Izi zimakhala ndi kachulukidwe kakang'ono poyerekeza ndi mitundu ina ya polyethylene.Kuchulukana kwa HDPE kumaperekedwa ngati 0.95 g/cm3.Popeza kuchuluka kwa nthambi za unyolo wa polima muzinthu izi ndizotsika kwambiri, maunyolo a polima amadzaza mwamphamvu.Izi zimapangitsa HDPE kukhala yolimba komanso imapereka kukana kwakukulu.HDPE imatha kuyendetsedwa ndi kutentha pafupifupi 120°C popanda zotsatira zoyipa.Izi zimapangitsa HDPE autoclavable.

Katundu wa HDPE

Zofunikira za HDPE zimaphatikizapo,

Zovuta

Mkulu kugonjetsedwa

Autoclavable

Mawonekedwe opaque kapena translucent

Kuchuluka kwa mphamvu ndi kachulukidwe

Kulemera kopepuka

Kusayamwa kapena kuchepera kwa zakumwa

Chemical resistance

HDPE ndi imodzi mwazinthu zapulasitiki zomwe ndizosavuta kuzikonzanso.Zinthu izi zimatsimikizira kugwiritsa ntchito HDPE.

Mapulogalamu a HDPE

Ntchito zina zofunika zimaphatikizapo zotsatirazi.

Amagwiritsidwa ntchito ngati mbiya zopangira zinthu zambiri zamadzimadzi monga mkaka komanso kusunga mankhwala monga mowa.

Kupanga matumba ogula apulasitiki

Matayala

Zopangira mapaipi

HDPE imagwiritsidwanso ntchito podula matabwa

Kodi Kufanana Kotani Pakati pa UHMW ndi HDPE?

UHMW ndi HDPE amapangidwa ndi ethylene monomers.

Onsewo ndi ma polima a thermoplastic.

Onsewa ali ndi mawonekedwe osadziwika.

Chidule-UHMW vs HDPE

Onse UHMW ndi HDPE amapangidwa ndi ethylene monomers kudzera polymerization.Kusiyana kwakukulu pakati pa UHMW ndi HDPE ndikuti UHMW ili ndi maunyolo aatali a polima okhala ndi zolemera kwambiri zamamolekyulu pomwe HDPE ili ndi chiŵerengero champhamvu champhamvu mpaka kachulukidwe.