Nkhani

Kusiyana Kofunika–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 atali a polima okhala ndi kulemera kwakukulu kwa mamolekyulu pomwe HDPE ili ndi chiŵerengero champhamvu kwambiri.

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

Kodi UHMW ndi chiyani?

UHMW ndi polyethylene yolemera kwambiri ya molekyulu. Ndi mtundu wa polima wa thermoplastic. Polima iyi ili ndi unyolo wautali kwambiri wa polima wokhala ndi kulemera kwakukulu kwa molekyulu (pafupifupi 5-9 miliyoni amu). Chifukwa chake, UHMW ili ndi kuchuluka kwakukulu kwa molekyulu. Komabe, mawonekedwe a kaphatikizidwe aka ndi osiyana ndi a HDPE.

Katundu wa UHMW

Makhalidwe ofunikira a UHMW ndi awa.

Ndi chinthu cholimba.

Ili ndi mphamvu yogwira ntchito kwambiri

Chopanda fungo komanso chosakoma

Kutha kutsetsereka kwakukulu

Kukana ming'alu

Ndi yolimba kwambiri

Chosakanizacho sichili ndi poizoni, ndipo ndi chotetezeka.

Sizimayamwa madzi.

Maunyolo onse a polima mu UHMW ndi aatali kwambiri, ndipo amalumikizana mbali imodzi. Unyolo uliwonse wa polima umalumikizidwa ndi maunyolo ena a polima ozungulira kudzera mu mphamvu za Van der Waal. Izi zimapangitsa kuti kapangidwe konseko kakhale kolimba kwambiri.

UHMW imapangidwa kuchokera ku polymerization ya monomer, ethylene. Polimerization ya ethylene imapanga chinthu cha polyethylene. Kapangidwe ka UHMW ndi kosiyana kwambiri ndi ka HDPE chifukwa cha njira yopangira. UHMW imapangidwa pamaso pa metallocene catalyst (HDPE imapangidwa pamaso pa Ziegler-Natta catalyst).

Kugwiritsa ntchito UHMW

Kupanga mawilo a nyenyezi

Zomangira

Ma Roller

Magiya

Mapepala otsetsereka

Kodi HDPE ndi chiyani?

HDPE ndi polyethylene yokhuthala kwambiri. Ndi thermoplastic polymer. Chipangizochi chili ndi kuchuluka kwakukulu poyerekeza ndi mitundu ina ya polyethylene. Kuchuluka kwa HDPE kumaperekedwa ngati 0.95 g/cm3. Popeza kuchuluka kwa nthambi za unyolo wa polima muchipangizochi ndi kochepa kwambiri, unyolo wa polima umayikidwa mwamphamvu. Izi zimapangitsa HDPE kukhala yolimba komanso imapereka kukana kwakukulu. HDPE imatha kugwiridwa ndi kutentha pafupifupi madigiri 120.°C yopanda vuto lililonse. Izi zimapangitsa kuti HDPE ikhale yokhazikika yokha.

Katundu wa HDPE

Zinthu zofunika kwambiri za HDPE ndi monga,

Zovuta Kwambiri

Kulimbana ndi kugwedezeka kwambiri

Yokhazikika yokha

Maonekedwe osawoneka bwino kapena owonekera bwino

Chiŵerengero champhamvu kwambiri pa kuchuluka kwa anthu

Kulemera kochepa

Kusayamwa madzi pang'ono kapena pang'ono

Kukana mankhwala

HDPE ndi chimodzi mwa zipangizo zapulasitiki zomwe zimakhala zosavuta kubwezeretsanso. Zinthu zimenezi zimatsimikizira momwe HDPE imagwiritsidwira ntchito.

Kugwiritsa ntchito HDPE

Ntchito zina zofunika zimaphatikizapo kutsatira.

Amagwiritsidwa ntchito ngati ziwiya zosungiramo zinthu zambiri zamadzimadzi monga mkaka komanso kusungiramo mankhwala monga mowa.

Kupanga matumba apulasitiki ogulira zinthu

Mathireyi

Zolumikizira mapaipi

HDPE imagwiritsidwanso ntchito podulira matabwa

Kodi pali kufanana kotani pakati pa UHMW ndi HDPE?

UHMW ndi HDPE zimapangidwa ndi ethylene monomers.

Zonsezi ndi ma polima a thermoplastic.

Zonsezi zimakhala ndi mawonekedwe osiyana.

Chidule–UHMW vs HDPE

UHMW ndi HDPE zonse zimapangidwa ndi ma monomers a ethylene kudzera mu polymerization. Kusiyana kwakukulu pakati pa UHMW ndi HDPE ndikuti UHMW ili ndi maunyolo atali a polima okhala ndi kulemera kwakukulu kwa mamolekyulu pomwe HDPE ili ndi chiŵerengero champhamvu kwambiri mpaka kuchulukana.