Yog vim li cas vim li cas Polymerization ntawm PVC ua npuas ncauj Board yog tsawg dhau
Sep 23, 2022
Txhawm rau txhim kho lub zog yaj ntawm PVC ua npuas ncauj cov ntaub ntawv thiab txhawb cov yas ntawm PVC, ultra-siab molecular hnyav polymers tau ntxiv rau PVC ua npuas ncauj khoom. Lub lubrication system kuj txawv. Dab tsi yog vim li cas rau qhov tsawg polymerization ntawm PVC ua npuas ncauj board?
PVC ua npuas ncauj board muaj cov yam ntxwv ntawm waterproof, nplaim taws retardant, acid thiab alkali tsis kam, npauj tsis kam, lub teeb yuag, txuag tshav kub, suab rwb thaiv tsev thiab poob siab absorbing. Zoo tagnrho lwm txoj rau cov ntawv hlau.
PVC resins feem ntau muab faib ua peb hom: emulsion PVC, tshem tawm PVC thiab bulk PVC raws li lawv txoj kev polymerization. Thaum tsim cov khoom lag luam PVC ua npuas ncauj nruj, yog siv cov txheej txheem emulsion PVC, cov khoom lag luam uas muaj lub cev tsis sib xws thiab lub ntsej muag du tuaj yeem tau txais, tab sis qhov kev ruaj ntseg ntawm cov khoom yog qhov nyuaj rau kev tswj; thiab cov nqi tsim khoom ntawm txoj kev emulsion PVC resin yog siab; Yog tias txoj kev raug tshem tawm yog siv PVC cob, cov tsos zoo thiab cov cell uniformity ntawm cov khoom yog me ntsis zuj zus.
Hais txog kev siv thev naus laus zis, tus nqi thiab kev ua tau zoo, nws yog ib qho tsim nyog kom sib tov ob qho tib si hauv ib qho piv txwv, thiab qhov sib piv tuaj yeem nyob nruab nrab ntawm 80/20-20/80. Qhov chaw hla ntawm daim ntawv yog qhov dav, thiab lub taub hau extruder nkag mus rau qhov tuag mus rau qhov dav sib npaug li 1.3 meters. Txhawm rau kom tau txais cov khoom siv yas uas tsis muaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom sivတို့ဟာ siv cov khoom siv yas ua kom zoo nkauj, cov viscosity ntawm cov khoom siv yuav tsum tsis txhob siab dhau. Lub dispersion thiab nthuav dav ntawm cov npuas, thiab kev sib koom ua haujlwm siab ntawm tag nrho cov ntu ntu ntawm daim ntawv, yuav tsum muaj cov kua dej ntau. Yog hais tias lub viscosity ntawm PVC resin yog siab dhau lawm, lub melt fluidity yog tsis zoo, lub flatness ntawm lub board nto yog ib qho nyuaj los xyuas kom meej, thiab lub hlwb tsis yooj yim rau nthuav, ua rau ib tug tsawg foaming piv; ntawm qhov tsis sib xws, yog tias cov viscosity ntawm PVC resin tsawg dhau, lub zog yaj yuav qis, uas yooj yim ua rau tawg npuas.
