Video: Dab tsi yog cross-linked polymer?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Dab tsi yog composite hauv polymer?
Ib qho polymer sib xyaw yog cov khoom siv ntau theem hauv cov khoom siv ntxiv nrog cov polymer matrix, uas ua rau cov khoom siv sib xyaw ua ke uas tsis tuaj yeem ua tiav los ntawm ob qho tib si ib leeg [1]
Polymer txheej yog dab tsi?
Polymer txheej yog xim los yog txheej uas yog ua los ntawm polymers. Ib qho polymer yog ib yam khoom uas muaj cov qauv molecular uas feem ntau muaj ntau yam zoo sib xws. Qhov no suav nrog cov khoom siv hluavtaws organic xws li resins thiab plastics
Dab tsi yog qhov tseeb polymer?
Biological polymers yog cov molecules loj uas muaj ntau yam zoo sib xws me me molecules txuas ua ke nyob rau hauv ib tug zoo xws li saw. Cov me me molecules yog hu ua monomers. Thaum me me cov organic molecules koom ua ke, lawv tuaj yeem tsim cov molecules loj lossis polymers
Mono polymer yog dab tsi?
Polymers yog chains nrog ib tug unspecified tooj ntawm monomeric units. ib polymer. Homopolymers yog cov polymers ua los ntawm kev koom ua ke monomers ntawm tib cov tshuaj muaj pes tsawg leeg lossis cov qauv. ib tug polymer uas muaj tag nrho cov tib monomer. Heteropolymers yog cov polymers uas muaj ntau tshaj ib hom monomer
Dab tsi yog qhov polymer ntawm Teflon?
PTFE yog vinyl polymer, thiab nws cov qauv, yog tias tsis yog nws tus cwj pwm, zoo ib yam li polyethylene. Polytetrafluoroethylene yog tsim los ntawm monomer tetrafluoroethylene los ntawm dawb radical vinyl polymerization