Video: Vim li cas PVC yog ib qho ntxiv polymer?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
(c) Polymerization ntawm chloroethene (vinyl chloride)
Qhov no yog ib qho piv txwv ntawm Ntxiv polymerization . PVC yog tsim los ntawm dawb-radical polymerization hauv kev ncua. Thaum polymerization , cov polymer precipitates tawm raws li nws yog tsim, vim nws yog insoluble nyob rau hauv lub monomer.
Hauv qhov no, puas yog PVC ntxiv polymer?
Polyolefins. Ntau yam ntxiv polymers yog tsim los ntawm unsaturated monomers (feem ntau muaj C = C ob daim ntawv cog lus). Piv txwv ntawm xws li polyolefins yog polyethenes, polypropylene, PVC , Teflon, Buna rubbers, polyacrylates, polystyrene, thiab PCTFE.
Ib tug kuj yuav nug, dab tsi ntxiv thiab condensation polymers? Ntxiv polymerization yog cov txheej txheem rov ua dua ntxiv ntawm monomers uas muaj ob lossis peb daim ntawv cog lus rau daim ntawv polymers . A polymerization ntawm condensation yog ib txoj kev uas yuav rov ua dua condensation Cov tshuaj tiv thaiv ntawm ob qhov sib txawv bi-functional lossis tri-functional monomers.
Tsis tas li ntawd, yog PVC ib qho condensation lossis ntxiv polymer?
Piv txwv li: polyethylene, polypropylene, P. V. C (Poly Vinyl Chloride), teflone. Condensation polymers yog tsim los ntawm kev sib xyaw ntawm monomers nrog kev tshem tawm cov molecules yooj yim xws li H2O lub CH3OH Muaj ob hom Condensation polymers : 1.
Vim li cas polymerization yog ib hom tshuaj tiv thaiv ntxiv?
Ntxiv polymerization tshwm sim los ntawm ib txoj saw hlau cov tshuaj tiv thaiv nyob rau hauv uas ib tug carbon-carbon ob daim ntawv cog lus ntxiv rau lwm tus. Monomers txuas ntxiv mus teb nrog rau qhov kawg ntawm kev loj hlob polymer saw nyob rau hauv ib Ntxiv cov tshuaj tiv thaiv polymerization kom txog thaum lub reactive intermediate raug puas tsuaj nyob rau hauv ib tug txiav cov tshuaj tiv thaiv.
Pom zoo:
Yuav ua li cas yog ib qho ntxiv polymer tsim?
Ib qho ntxiv polymer yog ib qho polymer uas tsim los ntawm kev sib txuas yooj yim ntawm monomers yam tsis muaj kev sib koom ua ke ntawm lwm cov khoom. Ntxiv polymerization txawv ntawm condensation polymerization, uas ua ke tsim cov khoom, feem ntau yog dej. Ntxiv cov polymers yog tsim los ntawm kev sib ntxiv ntawm qee qhov yooj yim monomer units rov ua dua
Lub hauv paus ntsiab lus twg piav qhia tias vim li cas AFC poob qis thaum cov zis nce ntxiv cov ntsiab lus piav qhia vim li cas AVC nce ntxiv thaum cov zis nce ntxiv?
AFC poob qis vim qhov tso zis ntau ntxiv vim muaj kev sib kis. Tus nqi ruaj khov yog kis mus rau ntau dua thiab ntau dua units ntawm cov khoom tso tawm raws li cov zis ntau ntxiv. AVC nce raws li cov zis nce vim qhov txo qis rov qab los. Vim qhov txo qis rov qab mus rau kev ua haujlwm, nws raug nqi ntau dua los tsim txhua chav ntxiv ntawm cov zis
Puas yog nuclear yog ib qho khoom siv txuas ntxiv mus ntxiv?
Nuclear zog feem ntau yog suav hais tias yog lwm lub zog tsis txuas ntxiv dua tshiab. Txawm hais tias lub zog nuclear nws tus kheej yog lub zog tauj dua tshiab, cov khoom siv hauv nuclear fais fab nroj tsuag tsis yog. Nuclear zog sau lub zog muaj zog nyob rau hauv lub nucleus, los yog core, ntawm ib tug atom
Puas yog nylon ib qho ntxiv polymer?
Nplhaib-qhib polymerization yog cov txheej txheem ntxiv tab sis nyiam muab cov kua nplaum zoo li polymers tab sis ua raws li stoichiometry ntawm ntxiv polymerization. Nylon 6 (tsim los thwart lub patent ntawm nylon 6,6) yog tsim los ntawm ntxiv polymerization, tab sis chemically resembles raug polyamides
Ib qho piv txwv ntawm ntxiv polymer yog dab tsi?
Polyolefins. Ntau qhov sib ntxiv polymers yog tsim los ntawm unsaturated monomers (feem ntau muaj C = C ob daim ntawv cog lus). Piv txwv ntawm cov polyolefins yog polyethenes, polypropylene, PVC, Teflon, Buna rubbers, polyacrylates, polystyrene, thiab PCTFE