Izindaba

Umehluko Obalulekile-UHMW vs HDPE

I-UHMW ne-HDPE ama-polymer e-thermoplastic anokubukeka okufanayo. Umehluko oyinhloko phakathi kwe-UHMW ne-HDPE ukuthi i-UHMW iqukethe amaketanga e-polymer amade anesisindo samangqamuzana aphezulu kakhulu kuyilapho i-HDPE inesilinganiso esiphezulu samandla-to-density.

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

Yini i-UHMW?

I-UHMW iyi-polyethylene enesisindo se-molecular ephezulu kakhulu. Kuwuhlobo lwe-polymer ye-thermoplastic. Le nhlanganisela ye-polymer iqukethe amaketanga e-polymer amade kakhulu anesisindo samangqamuzana aphezulu (cishe izigidi ezingu-5-9 amu). Ngakho-ke, i-UHMW inesibalo esiphezulu samangqamuzana. Kodwa-ke, ukubukeka kwalesi sakhiwo akuhlukaniseki kulokho kwe-HDPE.

Izakhiwo ze-UHMW

Izakhiwo ezibalulekile ze-UHMW zimi kanje.

Kuyinto eqinile.

Inamandla omthelela aphezulu

Ayinaphunga futhi ayinambitheki

Ikhono eliphezulu lokushelela

Ukumelana nokuqhekeka

Ayinamathelisi kakhulu

Inhlanganisela ayinabo ubuthi, futhi iphephile.

Ayiwamunyi amanzi.

Wonke amaketanga e-polymer ku-UHMW made kakhulu, futhi aqondana ohlangothini olufanayo. Iketango ngalinye le-polymer lihlanganiswe namanye amaketanga e-polymer azungezile ngokusebenzisa amabutho e-Van der Waal. Lokhu kwenza sonke isakhiwo sibe nzima kakhulu.

I-UHMW ikhiqizwa kusuka ku-polymerization ye-monomer, i-ethylene. I-polymerization ye-ethylene yakha umkhiqizo oyisisekelo we-polyethylene. Isakhiwo se-UHMW sihluke kakhulu kuleso se-HDPE ngenxa yendlela yokukhiqiza. I-UHMW ikhiqizwa phambi kwe-metallocene catalyst (i-HDPE ikhiqizwa phambi kwe-Ziegler-Natta catalyst).

Izicelo ze-UHMW

Ukukhiqizwa kwamasondo enkanyezi

Izikulufu

Amarola

Amagiya

Amapuleti ashelelayo

Iyini i-HDPE?

I-HDPE i-polyethylene ephezulu yokuminyana. Kuyinto thermoplastic polymer material. Le nto inomthamo omkhulu uma iqhathaniswa nezinye izinhlobo ze-polyethylene. Ukuminyana kwe-HDPE kunikezwa njengo-0.95 g/cm3. Njengoba izinga le-polymer chain branching kule nto liphansi kakhulu, amaketanga e-polymer agcwele ngokuqinile. Lokhu kwenza i-HDPE ibe nzima uma kuqhathaniswa futhi inikeza ukumelana nomthelela omkhulu. I-HDPE ingaphathwa ngaphansi kwamazinga okushisa azungeze i-120°C ngaphandle kwanoma yimuphi umphumela olimazayo. Lokhu kwenza i-HDPE ikwazi ukuziphendulela.

Izakhiwo ze-HDPE

Izici ezibalulekile ze-HDPE zifaka,

Kunzima Ngokuqhathaniswa

Ukumelana nomthelela ophezulu

I-Autoclavable

Ukubukeka okukhanyayo noma okukhanyayo

Isilinganiso esiphezulu samandla-kuya-kuminyana

Isisindo esincane

Ukumuncwa okuncane noma okuncane koketshezi

Ukumelana namakhemikhali

I-HDPE ingenye yezinto zepulasitiki okulula kakhulu ukuthi zigaywe kabusha. Lezi zakhiwo zinquma ukusetshenziswa kwe-HDPE.

Izinhlelo zokusebenza ze-HDPE

Ezinye izinhlelo zokusebenza ezibalulekile zihlanganisa okulandelayo.

Isetshenziswa njengezitsha zezinto eziningi eziwuketshezi ezifana nobisi kanye nokugcina amakhemikhali afana notshwala.

Ukukhiqiza izikhwama zokuthenga zepulasitiki

Amathreyi

Ukufakwa kwamapayipi

I-HDPE nayo isetshenziselwa ukusika amabhodi

Yiziphi Ukufana Phakathi kwe-UHMW ne-HDPE?

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

Zombili zingama-polymers we-thermoplastic.

Zombili zinokubukeka okungaqondakali.

Isifinyezo-UHMW vs HDPE

Kokubili i-UHMW ne-HDPE zenziwe nge-ethylene monomers nge-polymerization. Umehluko oyinhloko phakathi kwe-UHMW ne-HDPE ukuthi i-UHMW iqukethe amaketanga e-polymer amade anesisindo samangqamuzana aphezulu kakhulu kuyilapho i-HDPE inesilinganiso esiphezulu samandla-to-density.