PP yog polypropylene yas
Lub zog nqus tshwj xeeb: 0.9-0.91g / cm3 molding shrinkage: 1.0-2.5% molding kub: 160-220 ℃
Qhov qis qis, ua kom muaj zog thiab nruj, tuaj yeem siv tau ntawm 100 degrees. Nws muaj cov hluav taws xob zoo thiab lub teeb hluav taws xob ntau, tsis cuam tshuam los ntawm av noo, tab sis brittle ntawm qis kub, tsis kam tiv taus kev laus kev laus. Nws yog qhov tsim rau kev ua cov khoom siv dav dav, cov khoom siv tiv thaiv kev txhim kho thiab qhov chaw rwb thaiv tsev
Cov cuab yeej ua pwm 1. Cov khoom siv crystalline, nqus tau ya raws me me, yooj yim tshwm sim melt tawg, kev tiv thaiv ntev nrog kub hlau yooj yim rau kev decompose
2. Zoo fluidity, tab sis loj shrinkage ntau thiab shrinkage tus nqi, yooj yim ua rau shrinkage kab noj hniav, hniav cuav thiab deformation
3. Kev tswj cua txias yog nrawm, qhov tso cov txheej txheem thiab cua txias yuav tsum maj mam tawm cov cua sov, thiab them sai sai rau kev tswjhwm kub. Cov kev taw qhia ntawm cov khoom siv qis kub yog qhov pom tseeb. Nws yog tshwj xeeb tshaj yog pom tseeb ntawm kub kub thiab nce siab. Thaum pwm kub qis dua li 50 degrees, cov feem yas tsis du, qhov cuam tshuam txog kev sib txuas tsis zoo, tawm hauv cov kab, thiab nquag tawm tsam thiab deformation siab dua 90 degrees
4. Lub teeb ntsa ntawm phab ntsa ntawm cov yas yuav tsum yog ib yam kom tsis txhob muaj cov kua nplaum thiab pob ntsej muag, kom thiaj li tiv thaiv kom tsis txhob muaj kev kub ntxhov
PVC, PVC, Lus Askiv poly (vinyl chloride)
Kev nqus tshwj xeeb: 1.38g / cm3 molding shrinkage: 0.6-1.5% molding kub: 160-190 ℃
Cov cuab yeej zoo thiab hluav taws xob muaj zog, muaj zog acid thiab alkali tsis kam, zoo tshuaj lom neeg ruaj khov, tab sis qis muag khoom taw tes. Nws yog tsim rau ua daim ntawv, hlau thiab cable rwb thaiv tsev txheej, foob, thiab lwm yam
Kev ua tiav moulding 1. Cov khoom siv zoo nkauj, nqus dej noo me me, tsis muaj dej tsis zoo. Txhawm rau txhawm rau txhim kho qhov kev npliag thiab tiv thaiv ua npuas, cov yas tuaj yeem qhuav ua ntej. Cov pwm txheej txheem yuav tsum ntxhib thiab luv, qhov ntu ntawm lub rooj vag yuav tsum loj, thiab yuav tsum tsis muaj lub kaum sab xis tuag. Cov pwm yuav tsum txias thiab lub nplaim yuav tsum chrome plated
2. Nws yooj yim rau decompose. Nws yog ib qho yooj yim rau kev xaim thaum sib cuag nrog cov hlau thiab tooj liab ntawm 200 ℃. Thaum lub sij hawm txiav txim siab, kev xeb, cov pa roj thiab cov pwm kub muaj feem me me
3. Thaum cov ntsia hlau hom txhaj tshuaj siv tshuab nozzle siv, lub taub qhov taub yuav tsum loj kom tiv thaiv tuag lub kaum sab xis. Yog tsis muaj cev ntas, yog tias muaj, cov lus ntxig yuav tsum preheated