Izindaba

Umehluko Oyinhloko–I-UHMW vs i-HDPE

I-UHMW ne-HDPE zingama-polymer e-thermoplastic anokubukeka okufanayo. Umehluko omkhulu phakathi kwe-UHMW ne-HDPE ukuthi i-UHMW iqukethe amaketanga amade e-polymer anesisindo sama-molecule aphezulu kakhulu kanti i-HDPE inesilinganiso samandla aphezulu kuya kobuningi.

I-UHMW imele i-Ultra High Molecular Weight polyethylene. Iphinde ichazwe yi-UHMWPE. Igama elithi HDPE limele i-High Density Polyethylene.

Iyini i-UHMW?

I-UHMW iyi-polyethylene enesisindo sama-molecule esiphezulu kakhulu. Luhlobo lwe-polymer ye-thermoplastic. Le nhlanganisela ye-polymer iqukethe amaketanga ama-polymer amade kakhulu anesisindo sama-molecule aphezulu (cishe ama-amu ayizigidi ezingu-5-9). Ngakho-ke, i-UHMW inobuningi bama-molecule obuphezulu kakhulu. Kodwa-ke, ukubukeka kwale nhlanganisela akubonakali kulokho kwe-HDPE.

Izakhiwo ze-UHMW

Izakhiwo ezibalulekile ze-UHMW yilezi ezilandelayo.

Kuyinto eqinile.

Inamandla amakhulu okushaya

Ayinaphunga futhi ayinambitheki

Ikhono eliphezulu lokushelela

Ukumelana nokuqhekeka

Ayinamatheli kakhulu

Le nhlanganisela ayinabo ubuthi, futhi iphephile.

Ayimunci amanzi.

Zonke izintambo ze-polymer ku-UHMW zinde kakhulu, futhi ziqondana ngendlela efanayo. Intambo ngayinye ye-polymer ihlanganiswe nezinye izintambo ze-polymer ezizungezile ngamandla kaVan der Waal. Lokhu kwenza isakhiwo sonke sibe nzima kakhulu.

I-UHMW ikhiqizwa ngokwenziwa kwe-polymer kwe-monomer, i-ethylene. Ukwenziwa kwe-polymer kwe-ethylene kwakha umkhiqizo we-polyethylene oyisisekelo. Isakhiwo se-UHMW sihluke kakhulu kwese-HDPE ngenxa yendlela yokukhiqiza. I-UHMW ikhiqizwa lapho kukhona i-catalyst ye-metallocene (i-HDPE ikhiqizwa lapho kukhona i-catalyst ye-Ziegler-Natta).

Izicelo ze-UHMW

Ukukhiqizwa kwamasondo ezinkanyezi

Izikulufu

Ama-roller

Amagiya

Amapuleti okushelela

Kuyini i-HDPE?

I-HDPE iyi-polyethylene enobukhulu obuphezulu. Iyinto ye-polymer ye-thermoplastic. Le nto inobukhulu obuphezulu uma iqhathaniswa nezinye izinhlobo ze-polyethylene. Ubukhulu be-HDPE bunikezwa njengo-0.95 g/cm3. Njengoba izinga lokuhlanganiswa kwe-polymer chain kule nto liphansi kakhulu, amaketanga e-polymer apakishwe kahle. Lokhu kwenza i-HDPE ibe nzima futhi inikeze ukumelana okuphezulu komthelela. I-HDPE ingaphathwa ngaphansi kwamazinga okushisa acishe abe ngu-120°C ngaphandle komphumela olimazayo. Lokhu kwenza i-HDPE ikwazi ukugoqeka ngokuzenzakalelayo.

Izakhiwo ze-HDPE

Izakhiwo ezibalulekile ze-HDPE zifaka phakathi,

Kunzima Kakhulu

Ukumelana nomthelela omkhulu

Ingafakwa ngokuzenzakalelayo

Ukubukeka okungabonakali noma okukhanyayo

Isilinganiso samandla aphezulu kuya kobuningi

Isisindo esincane

Akukho noma kuncane ukumuncwa koketshezi

Ukumelana namakhemikhali

I-HDPE ingenye yezinto zepulasitiki okulula ukuzisebenzisa kabusha. Lezi zakhiwo zinquma ukusetshenziswa kwe-HDPE.

Ukusetshenziswa kwe-HDPE

Ezinye izinhlelo zokusebenza ezibalulekile zifaka phakathi ukulandelwa.

Kusetshenziswa njengezitsha zamakhemikhali amaningi oketshezi njengobisi kanye nokugcina amakhemikhali afana notshwala.

Ukukhiqiza izikhwama zokuthenga zepulasitiki

Amathileyi

Ukufakwa kwamapayipi

I-HDPE isetshenziselwa futhi amabhodi okusika

Yikuphi ukufana phakathi kwe-UHMW ne-HDPE?

I-UHMW ne-HDPE zenziwe ngama-ethylene monomers.

Zombili ziyi-thermoplastic polymers.

Zombili zibukeka ngendlela engaqondakali.

Isifinyezo–I-UHMW vs i-HDPE

Kokubili i-UHMW ne-HDPE zenziwe ngama-ethylene monomers nge-polymerization. Umehluko oyinhloko phakathi kwe-UHMW ne-HDPE ukuthi i-UHMW iqukethe amaketanga amade e-polymer anesisindo sama-molecule aphezulu kakhulu kanti i-HDPE inesilinganiso samandla aphezulu kuya kobuningi.