Dab tsi yog cross-linked polymer?
Dab tsi yog cross-linked polymer?

Video: Dab tsi yog cross-linked polymer?

Video: Dab tsi yog cross-linked polymer?
Video: Keratoconus and Corneal Cross-Linking Treatment 2024, Kaum ib hlis
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Hla - txuas yog ib daim ntawv cog lus uas txuas ib qho polymer saw mus rau lwm tus polymer saw hlau. Yog li ntoo khaub lig - txuas polymers yog polymers uas tau thaum ntoo khaub lig - txuas daim ntawv cog lus tsim ntawm monomeric units. Cov ntoo khaub lig - txuas polymer cov ntawv ntev chains, txawm branched los yog linear, uas tuaj yeem tsim covalent bonds ntawm cov polymer molecules.

Tsis tas li ntawd, dab tsi yog cross linked polymers muab ob qho piv txwv?

Piv txwv ntawm crosslinked polymers Xws li: Polyester fiberglass, polyurethanes siv los ua txheej txheej, nplaum, roj hmab vulcanized, epoxy resins thiab ntau ntxiv.

Kuj Paub, puas yog Bakelite cross linked polymer? Bakelite yog a ntoo khaub lig - txuas condensation polymer ntawm phenol $$(C_{6}H_{5} - OH)$$ thiab formaldehyde $$(HCHO)$$. Nws yog thermosetting yas siv los ua hluav taws xob keyboards thiab hloov boards.

Yog li ntawd, dab tsi yog crosslinking hauv polymers?

Polymer chemistry. Kev sib txuas yog lub ntsiab lus dav dav rau cov txheej txheem ntawm kev tsim cov ntawv cog lus cog lus lossis luv luv ua ntu zus ntawm cov ntawv cog lus tshuaj mus koom ob polymer chains ua ke.

Vim li cas cross linking polymer hloov nws cov khoom?

Hla - kev sib txuas Roj hmab thiab lwm yam polymers tuaj yeem yog ntoo khaub lig - txuas . Ib qho tshuaj tiv thaiv kab mob tshwm sim uas txuas cov chains rau ib leeg mus tas li. Qhov no ua rau tag nrho cov qauv nruj dua thiab tsis tshua muaj elastic. Nws kuj ua rau cov khoom muaj zog thiab nyuaj.

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