Lub hom phiaj ntawm ntxiv ultra-high molecular phaus polymer rau hauv PVC foaming tus neeg sawv cev yog: ua ntej, los txhawb cov plasticization ntawm PVC; thib ob, txhawm rau txhim kho cov yaj lub zog ntawm PVC cov khoom siv foaming, tiv thaiv kev sib xyaw ua npuas, yog li kom tau txais cov npuag cov khoom tsis zoo; qhov thib peb, kom ntseeg tau tias lub yaj tau muaj cov tshuaj zoo, yog li kom tau txais cov khoom lag luam nrog cov tsos zoo. Vim tias cov khoom lag luam ntawm cov khoom siv foaming txawv cov khoom lag luam muaj qhov sib txawv, thiab cov cuab yeej siv, cov txheej txheem, cov ntaub ntawv raw khoom thiab cov txheej txheem lubrication siv yog qhov sib txawv, peb tau tsim cov txheej txheem foaming nrog cov khoom sib txawv kom tau raws li qhov sib txawv ntawm cov neeg siv.
Cov txheej txheem foaming ntawm cov plastics tuaj yeem faib ua peb theem: kev tsim cov tub ntxhais npuas, nthuav tawm ntawm cov npuas tub ntxhais thiab cov solidification ntawm npuas lub cev. Rau PVC foamed daim ntawv nrog tshuaj foaming tus neeg sawv cev, nthuav ntawm npuas tseem ceeb ua lub luag hauj lwm txiav txim siab hauv qhov zoo ntawm cov ntawv foamed. PVC yog ib hom ntawm cov saw ncaj molecule nrog luv molecular saw thiab yaj tsawg lub zog. Hauv cov txheej txheem npuas npuas nthuav dav rau hauv npuas, cov yaj tsis txaus los npog npuas, thiab cov pa roj tau yooj yim dhau lawm thiab sib koom ua npuas loj, uas txo cov khoom lag luam zoo ntawm cov ntawv ua npuas.
Lub hauv paus tseem ceeb los txhim kho qhov zoo ntawm PVC foaming tus neeg sawv cev yog txhawm rau txhim kho lub zog yaj ntawm PVC. Los ntawm kev txheeb xyuas ntawm kev coj ua cov yam ntxwv ntawm cov ntaub ntawv polymer, muaj ntau txoj hauv kev los txhim kho lub zog yaj ntawm PVC, tab sis cov kev ua tau zoo tshaj plaws yog ntxiv cov tshuaj ntxiv rau txhawm rau txhim kho lub zog yaj thiab txo qhov ntsuas kub. PVC belongs rau cov khoom siv amorphous, lub zog yaj poob qis nrog qhov nce ntawm yaj kub, ntawm qhov tsis sib xws, lub zog yaj nce nrog qhov txo ntawm yaj kub, tab sis cov txiaj ntsig txias yog tsawg, uas tsuas yog ua lub luag haujlwm pabcuam. ACR kev ua cov kab mob tuaj yeem txhim kho lub suab yaj lub zog, thiab foaming txheej txheem yog qhov ua tau zoo tshaj plaws. Lub yaj lub zog nce nrog qhov nce ntawm foaming regulator cov ntsiab lus. Feem ntau hais lus, ntev npaum li qhov ntsia hlau tau txaus dispersing thiab sib xyaw muaj peev xwm, cov nyhuv ntawm kev ntxiv viscosity foaming regulator ntawm kev txhim kho cov yaj lub zog yog ntau pom tseeb.
