PVDF khoom yog dab tsi?
Polyvinylidene Fluoride (PVDF) yog cov khoom siv ua haujlwm siab dav siv hauv kev lag luam tshuaj thiab kev tsim khoom, thiab tau txais txiaj ntsig rau nws cov tshuaj tiv thaiv zoo heev, hluav taws xob thiab lub zog txhua yam. Hauv tsab xov xwm no, peb yuav txheeb xyuas kom meej tias PVDF yog dab tsi, nws cov khoom, kev siv thiab cov txheej txheem tsim khoom los pab koj nkag siab zoo txog qhov zoo ntawm cov khoom siv no.
Ua ntej, cov yam ntxwv tseem ceeb ntawm PVDF
PVDF yog ib qho semi-crystalline thermoplastic fluoropolymer, feem ntau yog polymerised los ntawm vinylidene fluoride (VDF) monomer. Vim lub siab electronegativity ntawm fluorine atom thiab lub zog ntawm CF daim ntawv cog lus, PVDF nthuav tawm cov khoom hauv qab no:

Tshuaj tiv thaiv: PVDF tsis tshua muaj zog rau feem ntau cov kua qaub, alkalis, ntsev thiab cov kuab tshuaj, uas ua rau nws ruaj khov thiab tiv taus corrosion hauv kev lag luam tshuaj lom neeg lub sijhawm.

Mechanical Strength: PVDF muaj lub zog tensile zoo heev thiab kev cuam tshuam tsis zoo, ua rau nws tswj hwm nws cov qauv kev ncaj ncees hauv ib puag ncig hnyav.

Cov khoom hluav taws xob: Vim nws qhov tsis tshua muaj hluav taws xob tsis tu ncua thiab cov khoom siv hluav taws xob siab, PVDF tau siv dav hauv cov hluav taws xob thiab hluav taws xob, tshwj xeeb tshaj yog cov khoom siv insulating rau cov xov hlau thiab cables.

Thermal stability: PVDF muaj cov thermal stability zoo thiab tuaj yeem siv rau hauv ntau qhov kub thiab txias, thiab feem ntau tuaj yeem tswj nws lub cev muaj zog hauv qhov kub ntawm -40 ° C txog 150 ° C.

Thib ob, cov txheej txheem tsim khoom ntawm PVDF
Kev tsim khoom ntawm PVDF yog ua tiav los ntawm cov dawb radical polymerization, feem ntau yog los ntawm kev daws teeb meem polymerisation lossis ncua kev kawm ntawv polymerization. Nyob rau hauv cov txheej txheem polymerization, VDF monomers yog polymerised rau hauv PVDF polymer nyob rau hauv tej yam kev mob tshwm sim. Tom qab ntawd, dhau los ntawm cov txheej txheem tom qab kev kho mob, suav nrog kev ua kom huv, extrusion thiab granulation, qhov kawg tsim ntawm PVDF cov khoom uas muaj lub cev tshwj xeeb.
Thib peb, cov kev thov tseem ceeb ntawm PVDF
PVDF tau siv dav hauv ntau qhov kev lag luam vim nws qhov kev ua tau zoo heev:

Kev lag luam tshuaj lom neeg: PVDF feem ntau yog siv rau hauv kev tsim khoom ntawm ntau hom tshuaj ntim, cov kav dej thiab cov li qub, tshwj xeeb tshaj yog nyob rau hauv lub sijhawm uas muaj cov tshuaj corrosive.

Kev tsim kho kev lag luam: PVDF yog siv los tsim cov txheej txheem kev ua haujlwm siab, xws li fluorocarbon coatings, uas yog siv los tiv thaiv cov phab ntsa sab nrauv ntawm cov tsev, thiab tuaj yeem tswj tau qhov zoo nkauj ntawm lub tsev rau lub sijhawm ntev vim nws cov khoom siv UV thiab kev laus-resistant.

Kev lag luam hluav taws xob thiab hluav taws xob: PVDF yog siv dav hauv kev tsim cov cables, cov khoom sib txuas thiab lithium roj teeb diaphragms vim nws cov hluav taws xob zoo heev thiab hluav taws xob tiv thaiv.

Kev lag luam kev kho dej: PVDF membrane cov ntaub ntawv yog siv rau hauv kev kho dej, tshwj xeeb tshaj yog nyob rau hauv ultrafiltration thiab nanofiltration membranes, uas yog nyiam rau lawv cov tshuaj tiv thaiv siab thiab siab pom tseeb.

Plaub, kev ua lag luam zeem muag thiab cov teeb meem ntawm PVDF
Nrog rau kev nrawm ntawm kev lag luam thiab kev xav tau ntawm cov ntaub ntawv ua tau zoo, PVDF kev ua lag luam tau loj hlob sai.Cov nqi tsim khoom siab thiab nyuaj ntawm cov txheej txheem ntau lawm ntawm PVDF ua rau nws cov nqi lag luam kim dua. Daim ntawv thov ntawm PVDF kuj ntsib qee qhov teeb meem vim nws cov teeb meem fluoride txog ib puag ncig. Yog li ntawd, optimizing cov txheej txheem ntau lawm thiab txo qhov cuam tshuam ib puag ncig ntawm PVDF yuav yog qhov tseem ceeb rau kev txhim kho yav tom ntej.
Cov ntsiab lus
PVDF khoom yog dab tsi? Los ntawm kev txheeb xyuas saum toj no, peb tuaj yeem pom tias PVDF yog cov khoom siv fluoropolymer uas muaj kev ua haujlwm siab nrog ntau yam kev thov. Nws cov tshuaj tiv thaiv zoo heev, txhua yam muaj zog, hluav taws xob thiab thermal stability ua rau nws ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw. Nrog rau kev txhim kho ntawm kev tiv thaiv ib puag ncig, kev tsim khoom thiab kev siv PVDF tseem yuav ntsib cov teeb meem tshiab thiab cov hauv kev. Nkag siab thiab paub txog cov khoom thiab kev siv ntawm PVDF tuaj yeem muab kev txhawb nqa tseem ceeb rau kev tsim kho tshiab thiab kev loj hlob ntawm cov lag luam muaj feem xyuam.