Kev xaiv cov yas zoo yog ib qho kev txiav txim siab tseem ceeb tshaj plaws hauv cov txheej txheem extrusion. Txij li kev ua kom zoo nkauj mus rau qhov pom tseeb, cov khoom siv uas koj xaiv muaj feem cuam tshuam ncaj qha rau kev ua haujlwm thiab lub neej ntawm koj cov khoom kawg. Kev nkag siab txog qhov sib txawv tseem ceeb ntawm cov khoom siv yas rau kev extrusion tuaj yeem pab cov chaw tsim khoom ua cov kev xaiv paub, tshwj xeeb rau daim ntawv thov.
Cia peb tshawb nrhiav cov yam ntxwv tseem ceeb, cov kev cai ua tiav, thiab cov txiaj ntsig kawg ntawm kev siv cov yas feem ntau siv hauv extrusion.
PVC: Kev Siv Tau Ntau Yam Sib Tw Nrog Kev Tiv Thaiv Tshuaj
Polyvinyl chloride (PVC) yog siv dav vim nws qhov sib npaug zoo ntawm tus nqi, kev ua haujlwm tau zoo, thiab kev ruaj khov. Muaj nyob rau hauv cov qauv khov kho thiab hloov pauv tau, PVC tiv taus cov tshuaj lom neeg, kev raug UV, thiab dej noo, ua rau nws zoo tagnrho rau cov kav dej, cov ntaub ntawv, thiab cov ntawv thov sab nraum zoov.
Hauv kev rho tawm, PVC feem ntau ua haujlwm ntawm 160 ° C thiab 210 ° C. Nws xav tau qhov kub thiab txias tswj tau zoo thiab tsim cov ntsia hlau uas txhawb nqa kev yaj ruaj khov thiab zam kev puas tsuaj. Nws qhov xwm txheej tiv taus hluav taws thiab cov khoom rwb thaiv tsev zoo kuj ua rau nws yog qhov xaiv zoo tshaj plaws hauv kev siv hluav taws xob.
PE: Sib dua thiab tiv taus kev cuam tshuam
Polyethylene (PE), tshwj xeeb tshaj yog nyob rau hauv nws cov HDPE thiab LDPE variants, yog paub txog nws qhov kev ywj pheej, kev tiv thaiv kev cuam tshuam, thiab kev nqus dej tsawg. Nws yog ib qho khoom siv mus rau hauv cov yeeb nkab, cov yeeb yaj kiab ntim khoom, thiab cov kav dej.
PE extrudes zoo ntawm 160–230 ° C, nrog rau cov qauv ntsia hlau uas ua rau muaj kev txiav tsawg thiab kev ua haujlwm siab. Nws qhov chaw du thiab tiv taus tshuaj lom neeg zoo ua rau nws tsim nyog rau kev thauj mus los ntawm cov kua thiab cov ntawv thov kov zaub mov. Ntawm txhua yam khoom siv yas rau extrusion, PE sawv tawm rau nws qhov ruaj khov zoo hauv qhov chaw nyuaj.
PP: Kev Ruaj Ntseg Tshuaj nrog Kev Rigidity
Polypropylene (PP) muaj kev sib xyaw ua ke ntawm kev ruaj khov thiab kev tiv taus tshuaj lom neeg. Nws muaj qhov kub siab dua PE thiab muab kev tiv taus kev qaug zog zoo dua, ua rau nws tsim nyog rau cov khoom siv tsheb, cov khoom siv hauv chaw kuaj mob, thiab cov pob qhov rooj nyob.
PP ua haujlwm ntawm qhov kub siab dua me ntsis (200–280 ° C), thiab xav tau lub hau ntswj nrog cov cheeb tsam sib tov thiab nias kom ntseeg tau tias cov dej yaj sib npaug. Nws kuj tseem sib dua thiab muaj kev tiv taus cov kua qaub thiab cov hauv paus zoo, zoo tagnrho rau cov chaw uas muaj kev phom sij tshuaj lom neeg.
ABS: Kev tawv nrog qhov zoo ntawm qhov chaw tiav
Acrylonitrile Butadiene Styrene (ABS) yog xaiv thaum qhov yuav tsum tau ua kom tsis txhob muaj kev cuam tshuam thiab qhov zoo li ntawm qhov chaw. Feem ntau pom muaj nyob rau hauv cov khoom siv thiab cov khoom siv hluav taws xob, ABS muab kev ruaj khov nrog kev ruaj khov zoo.
Kev rho tawm ABS xav tau qhov kub ntawm 190–240°C, nrog rau kev txiav ntsia hlau nruab nrab kom tsis txhob daj lossis qhov tsis zoo ntawm qhov chaw. Txawm hais tias ABS tsis tiv taus UV yam tsis muaj cov khoom ntxiv, nws qhov sib piv ntawm lub zog thiab qhov hnyav ua rau nws nrov hauv cov ntawv thov ua haujlwm siab.
PC: Kev Pom Tseeb thiab Kev Tiv Thaiv Kub
Polycarbonate (PC) yog qhov nyiam vim nws qhov pob tshab, kev ruaj khov thermal, thiab lub zog cuam tshuam siab. Nws feem ntau siv rau hauv cov ntaub thaiv teeb pom kev zoo, cov vaj huam sib luag tiv thaiv, thiab cov khoom siv kho mob qhov twg qhov meej thiab lub zog yog qhov tseem ceeb.
PC extrusion xav tau qhov kub ntawm 240–300 ° C thiab lub hau ntswj extruder siab nrog kev tswj hwm shear. Ntawm cov khoom siv yas rau extrusion, PC xav tau kev tswj hwm qhov kub kom meej kom tsis txhob daj lossis brittleness. Nws qhov pom tseeb ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov uas xav tau kev pom kev siab thiab kev sib kis lub teeb.
Kev Sib Txuas Cov Khoom Siv Rau Kev Siv: Tus yuam sij rau kev vam meej
Kev xaiv cov khoom siv yas kom raug rau kev rho tawm tsis yog hais txog tus nqi lossis muaj xwb - nws yog hais txog kev sib phim cov yam ntxwv kev ua tau zoo nrog cov kev thov. Xav tau kev tiv thaiv UV siab rau kev siv sab nraum zoov? PVC lossis PE tshwj xeeb yuav zoo tshaj plaws. Nrhiav cov vaj huam sib luag meej, ruaj khov? Xav txog PC. Rau cov thawv tiv taus tshuaj lom neeg, PP yog qhov ua tau zoo tshaj plaws.
Cov khoom siv yas rau kev rho tawm uas koj xaiv yuav txiav txim siab tsis yog qhov yooj yim ntawm kev ua tiav xwb tab sis kuj yog qhov ua tiav mus sij hawm ntev ntawm koj cov khoom hauv daim teb.
Xav kom koj txoj kab extrusion zoo dua nrog cov khoom siv yas zoo? Txuas nrogJWELLniaj hnub no—koj tus khub uas koj ntseeg siab tau hauv kev daws teeb meem extrusion thiab kev txawj ntse ntawm cov ntaub ntawv.
Lub sijhawm tshaj tawm: Tsib Hlis-08-2025