Cov ntsiab lus tseem ceeb ntawm kev paub txog PVC ua npuas ncauj board.

Tom qab kev nthuav dav mus ntev thiab kev sib tw, PVC ua npuas ncauj board qauv feem ntau siv nyob rau hauv kev ua lag luam tau pib qhov chaw thiab cov ntaub ntawv raw tau txiav txim siab. qhov laj thawj yog qhov yooj yim. Yog tias siv nyob rau hauv qhov tsim nyog, cov ntaub ntawv uas muaj kev sib raug zoo nrog PVC ua npuas ncauj boards yuav tsis precipitate. Tsuas yog cov ntaub ntawv uas tsis zoo sib xws nrog PVC ua npuas ncauj boards yuav los nag yog tias lawv tshaj tus nqi tseem ceeb. Los nag ntau yuav inevitably ua rau frosting.

Feem ntau siv cov khoom siv ntxiv rau PVC ua npuas ncauj ntawv suav nrog cov hmoov lead ntsev / calcium zinc stabilizer, daj thiab dawb foaming tus neeg sawv cev, thiab lwm yam. Foaming regulator muaj qhov zoo tshaj plaws compatibility nrog PVC, thiab muaj peev xwm txhawb lub melting thiab plasticization ntawm PVC, tsim ib tug network gel qauv, thiab txawm. txo cov nag lossis daus ntawm cov ntaub ntawv.

Stearic acid, calcium stearate, 60, thiab 316A yog cov lubricants sab hauv, tshwj xeeb tshaj yog 316A, uas muaj hydroxyl pawg hauv cov molecule thiab muaj kev sib raug zoo. 60 yog ester lubricant nrog zoo compatibility. Stearic acid yog tshwj xeeb me ntsis. Nws yog tsuas yog siv rau sab hauv lubrication thaum kub qis. Thaum qhov ntau npaum li cas los yog qhov kub thiab txias, nws yuav raug hloov dua siab tshiab rau hauv cov lubrication sab nraud lossis txawm tias precipitate.

PE wax yog lub siab melting point sab nraud lubricant uas tuaj yeem tsim ib zaj duab xis nyias ntawm cov hlau thiab PVC molecules ntawm qhov kub thiab txias los tiv thaiv adhesion. Stabilizer yog ib qho tseem ceeb thiab tseem ceeb additives rau PVC ua npuas ncauj board. Txhawm rau kom tsis txhob muaj nag lossis daus, peb tuaj yeem ua raws li kev ntsuas hauv qab no. Ua ntej, ntau yam lubricants (qis, nruab nrab thiab siab melting ntsiab lus, sab hauv thiab sab nrauv lubricants) yog siv ua ke los ua ib qho kev tsis txaus; Thib ob, tus nqi ntawm cov roj lubricants sab nraud raug txo kom ntau li ntau tau thaum ua kom tsis txhob ua rau cov pwm, thaum ua kom muaj dej thiab cov yas. Tus nqi ntawm cov roj nplua nyeem sab hauv yuav tsum raug txo kom ntau li ntau tau nyob rau hauv cov xwm txheej ntawm oxidation; qhov thib peb yog qhov kev xaiv ntawm stabilizer, sim xaiv ib qho uas zoo thiab tus nqi siab.