PVC board yog ib qho ntawm cov khoom siv dav siv. Nws lub ntsiab yog tiag tiag vinyl polymer, thiab cov khoom yog amorphous. Stabilizers, lubricants, auxiliary processing agent boards, pigments, impact agents and other additives are feem ntau ntxiv rau PVC cov ntaub ntawv hauv kev siv. PVC ntawv tsis muaj nplaim taws, huab cua tsis kam thiab zoo heev geometric stability. Nws muaj zog tiv thaiv oxidants, txo cov neeg ua haujlwm thiab muaj zog acids. PVC board yuav raug corroded los ntawm H2SO4 thiab tsis haum rau kev sib cuag nrog cov ntxhiab hydrocarbons thiab chlorinated hydrocarbons.
Melting kub yog cov txheej txheem tseem ceeb heev hauv kev ua ntawm PVC board. Yog tias qhov ntsuas no tsis tsim nyog, kev sib txawv ntawm cov khoom yuav tshwm sim. PVC muaj cov yam ntxwv tsis zoo thiab kev ua haujlwm nqaim. Tshwj xeeb, nws yog qhov nyuaj dua rau txheej txheem PVC rau cov ntaub ntawv uas muaj qhov hnyav molecular (lubricants feem ntau yog ntxiv los txhim kho cov yam ntxwv ntawm cov ntaub ntawv), yog li cov phaj nrog me me molecular hnyav feem ntau yog siv. Lub shrinkage ntawm PVC yog tsawg heev, feem ntau yog {{0}}.2 ~ 0.6 feem pua.
Txawm li cas los xij, cov ntawv PVC feem ntau tsis tas yuav ziab. Muaj ob peb yam uas koj tuaj yeem saib.
Melting kub: 185 ~ 205 degree. Pwm kub: 20 ~ 50 degree. Kev txhaj tshuaj siab tuaj yeem siab li 1500. Lub zog tuav tuaj yeem ncav cuag 1000 bar. Txhawm rau kom tsis txhob muaj cov khoom degradation, feem ntau yuav tsum tau txhaj tshuaj ntau npaum li cas. Rau kev khiav thiab rooj vag, txhua lub rooj vag PVC tuaj yeem siv tau.
Yog hais tias machining me me, siv ib rab koob tip rooj vag los yog lub qhov rooj submerged. Rau qhov chaw nrog tuab PVC phaj, siv lub qhov rooj kiv cua. Qhov me me txoj kab uas hla ntawm lub qhov rooj nkag los yog lub qhov rooj nkag mus yuav tsum yog 1 hli. Lub thickness ntawm txhua lub rooj vag yuav tsum tsis pub tsawg tshaj 1 hli. Kev siv p, PVC muaj qhov zoo ntawm cov ntaub ntawv nplua nuj, cov txheej txheem tsim khoom, tus nqi qis thiab daim ntawv thov dav. Nws tau dhau los ua cov khoom siv dav dav thib ob rau polyethylene resin, suav txog 29 feem pua ntawm tag nrho cov khoom siv hluavtaws hauv ntiaj teb.
Cov saum toj no yog hais txog cov txheej txheem ntawm PVC board. PVC yog ib qho yooj yim rau txheej txheem thiab tuaj yeem ua tiav los ntawm molding, laminating, txhaj tshuaj molding, extrusion molding, calendering, tshuab moulding, thiab lwm yam PVC yog tsuas yog siv los tsim cov khoom yas muag xws li tawv tawv, zaj duab xis thiab hlau sheaths, cov kav dej, cov kav dej hauv tsev, cov phab ntsa hauv tsev, cov khoom lag luam, cov khoom siv hluav taws xob, ntim khoom noj, nrog rau cov khoom yas thiab cov khoom tawv xws li cov phaj, qhov rooj, qhov rais, li qub, thiab lwm yam.
