PVC ua npuas ncauj boards yog siv nyob rau hauv txhua qhov chaw ntawm lub neej, tshwj xeeb tshaj yog nyob rau hauv lub tsev cov ntaub ntawv. Koj puas paub tias muaj teeb meem dab tsi tshwm sim thaum tsim cov PVC ua npuas ncauj? Hauv qab no, tus editor yuav qhia koj txog lawv.
Raws li qhov sib txawv foaming piv, nws tuaj yeem muab faib ua cov foaming siab thiab qis foaming. Raws li qhov softness thiab hardness ntawm cov ntaub ntawv ua npuas ncauj, nws tuaj yeem muab faib ua ib qho nyuaj, semi-hard thiab soft foams. Raws li cov qauv ntawm tes, nws tuaj yeem muab faib ua cov khoom siv kaw-cell ua npuas ncauj thiab qhib-cell ua npuas ncauj yas. Feem ntau PVC ua npuas ncauj ntawv yog cov ntawv kaw ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom. PVC ua npuas ncauj ntawv muaj qhov zoo ntawm cov tshuaj tiv thaiv corrosion, huab cua tsis kam, nplaim taws retardancy, thiab lwm yam, thiab yog dav siv nyob rau hauv ntau yam, nrog rau cov zaub panels, cov paib, billboards, partitions, siv vaj huam sib luag, rooj tog vaj huam sib luag, thiab lwm yam. ua rau cov hlwb loj hauv cov ntawv ua npuas dej thiab cov ntu ntev ntev. Txoj hauv kev ncaj qha los txiav txim seb lub zog yaj puas tsis txaus yog mus tom qab peb lub rollers thiab nias lub phaj qhwv rau hauv nruab nrab cov menyuam nrog koj cov ntiv tes. Yog tias lub zog yaj yog qhov zoo, koj tuaj yeem hnov lub elasticity thaum nias. Yog tias nws nyuaj rau lub caij nplooj ntoo hlav tom qab nias, lub zog yaj yog qhov tsis zoo. Vim tias cov qauv ntsia hlau thiab txoj kev txias txias yog qhov sib txawv heev, nws nyuaj rau txiav txim siab seb qhov kub thiab txias puas tsim nyog. Feem ntau hais lus, nyob rau hauv lub tso cai load ntawm lub extruder, qhov kub nyob rau hauv zones 3-5 yuav tsum tsawg li tsawg tau. Txhawm rau kom tau txais cov khoom lag luam zoo sib xws hauv cov ntawv ua npuas dej, nws tseem yuav tsum tau ua kom ntseeg tau tias cov khoom siv PVC muaj zog yaj zoo. Yog li ntawd, qhov zoo ntawm foaming regulator yog ib qho tseem ceeb heev. Piv txwv li, ntxiv rau cov haujlwm tseem ceeb ntawm kev pabcuam kev ua haujlwm dav dav, lub foaming regulator kuj muaj qhov hnyav molecular thiab yaj lub zog, uas tuaj yeem txhim kho lub zog yaj ntawm PVC sib tov thiab tiv thaiv npuas thiab tawg. , uas ua rau cov qauv ntawm tes ntau dua thiab cov khoom siv qis dua, thaum tseem txhim kho qhov gloss ntawm cov khoom. Tau kawg, ntau npaum li cas ntawm tus neeg sawv cev daj foaming thiab tus neeg sawv cev dawb foaming yuav tsum tau sib phim.
Nyob rau hauv cov nqe lus ntawm cov laug cam, yog hais tias lub stability yog tsis txaus, nws yuav cuam tshuam rau tag nrho cov board nto thiab nto ntawm lub rooj tsavxwm tig daj, thiab lub board ua npuas ncauj yuav nkig. Qhov kev daws teeb meem yog kom txo qhov ua haujlwm kub. Yog tias tsis muaj kev txhim kho, koj tuaj yeem kho cov qauv thiab tsim nyog nce tus nqi stabilizer thiab lubricant. Lub stabilizer yog lub lubrication system raws li cov khoom siv los ntawm cov khoom siv los txhim kho cov kua dej ntawm cov khoom. Cov ntaub ntawv kub-resistant muaj fluidity zoo. , zoo kub tsis kam; muaj zog huab cua tsis kam, zoo dispersion, toughening thiab melting cuam tshuam; zoo stability, plasticizing fluidity, dav ua ntau yam, muaj zog applicability thiab auxiliary sab hauv thiab sab nrauv lubrication. Lubricant muaj viscosity tsawg, siab tshwj xeeb zog, zoo heev lubrication thiab dispersion, thiab yog dav siv nyob rau hauv cov yas ua thiab lwm yam lag luam. Nws muaj cov txiaj ntsig zoo hauv thiab sab nraud lubrication; Nws muaj kev sib raug zoo nrog polyethylene, polyvinyl chloride, polypropylene, thiab lwm yam. Siv raws li dispersant, lubricant thiab brightener thaum lub sij hawm molding txheej txheem ntawm PVC profiles, kav, yeeb fittings, PE thiab PP, los txhim kho cov qib ntawm plasticization, txhim kho lub toughness thiab du. nto ntawm cov khoom yas, thiab tuaj yeem hloov pauv ib qho los ntawm ib qho, ua kom yooj yim kom pom cov teeb meem sai li sai tau, daws qhov teeb meem sai li sai tau. Nyob rau hauv cov nqe lus ntawm lubricant tshuav nyiaj li cas, tsis txaus nyob rau hauv lub sab nraud swb yog reflected nyob rau hauv lub fact tias qhov kub nyob rau hauv cheeb tsam 5 ntawm lub extruder yog ib qho nyuaj rau tswj thiab yooj yim heats, uas ua rau kub kub nyob rau hauv lub converging core, teeb meem xws li cov npuas loj, npuas, thiab yellowing nyob rau hauv nruab nrab ntawm lub rooj tsavxwm, thiab nto ntawm lub rooj tsavxwm tsis du; Kev plam ntau dhau yuav ua rau nag lossis daus loj heev, uas yuav tshwm sim nws tus kheej hauv cov qauv hauv pwm thiab nag lossis daus ntawm sab nraud ntawm lub phaj. Nws kuj tseem yuav tshwm sim raws li qee tus neeg phenomena txav rov qab thiab tawm mus tsis tu ncua ntawm lub phaj nto. Tsis txaus sab hauv plam txhais tau hais tias nws yog ib qho nyuaj rau tswj lub thickness ntawm lub rooj tsavxwm, uas yog tuab nyob rau hauv nruab nrab thiab nyias ntawm ob sab. Ntau dhau ntawm sab hauv plam yuav yooj yim ua rau kub siab hauv cov tub ntxhais sib txuas.
Post lub sij hawm: May-27-2024