Dab tsi yog Foam PVC?
PVC ua npuas ncauj daim ntawv yog ib qho khoom siv hnyav nrog cov khoom siv zoo thiab rwb thaiv tsev. Kev sib xyaw ntawm Polyvinyl chloride thiab polyurea, ua npuas ncauj PVC muaj lub zog zoo thiab siv cov khoom zoo vim nws cov kab, kaw-cell ua npuas ncauj qauv.
Qhov no lub teeb heev (tsawg li ib nrab ntawm qhov hnyav ntawm cov khoom PVC) cov khoom siv tiv taus cov dej noo thiab qee cov tshuaj, thiab yooj yim heev los txiav thiab zoo li. Nws kuj muaj cov khoom siv thermoplastic, thiab pib muag ntawm ib ncig ntawm 65c (149f). Feem ntau, kaw-cell PVC ua npuas ncauj board tuaj yeem txiav tau yooj yim li ntoo, softened thiab zoo li tus los ntawm immersing nyob rau hauv boiling dej los yog nrog ib tug standard tshav kub phom, thiab pleev xim rau cov qauv tsheb xim.
Cov txheej txheem tsim khoom
PVC foams muaj nyob rau hauv ntau qhov ntom ntom ntawm 3pcf txog 25 pcf (45kg / m3 txog 400kg / m3). Cov khoom xyaw nyoos yog sib xyaw ua ke nyob rau hauv kev tswj xyuas thiab dispensed rau hauv pwm. Tom qab ntawd cov pwm puv yog kaw, clamped kaw, ces muab tso rau hauv ib lub xovxwm loj thiab rhuab. Tom qab ua tiav cov txheej txheem no, ib qho slab ntawm cov khoom tsim tawm los ntawm pwm. Cov khoom siv ces nthuav dav hauv da dej kub kom ncav cuag nws qhov kawg ntom ntom thiab kho. Cov blocks kho tau raug txiav mus rau hauv cov ntawv sib txawv, nyob ntawm cov neeg siv khoom xav tau. Cov txheej txheem thiab formulation ua ke muab cov foams lawv kaw-cell xwm thiab lub cev zoo heev.
Kev siv
Raws li Ua Npuas Ncauj PVC muaj cov tshuaj tiv thaiv zoo nrog kev nqus dej tsawg, nws tsim nyog siv rau sab hauv tsev thiab sab nraum zoov. Nws muaj qhov cuam tshuam tsis zoo rau lub zog thiab vim nws qhov ntau ntawm cov xim nws feem ntau siv rau kev kos npe thiab cov lus qhia. PVC ua npuas ncauj daim ntawv yog ib qho yooj yim rau fabricate thiab daim ntawv cog lus, thiab yog heev resistant mus rau lub puas los nag, cua, thiab tshav ntuj. Vim yog cov yam ntxwv no, cov khoom siv no zoo meej rau cov khoom txhua hnub.
