qhov sib txawv ntawm PP thiab PVC tsis muaj teeb meem los ntawm qhov tsos lossis kev xav tuaj yeem sib txawv; PP xav yog qhov nyuaj thiab PVC kuj yog mos.
PP yog cov thermoplastic resin npaj los ntawm polymerization ntawm propylene. Muaj peb qhov kev teeb tsa ntawm isochronous, unregulated thiab interchronous khoom, thiab cov khoom isochronous yog cov khoom tseem ceeb ntawm cov khoom lag luam. Polypropylene kuj suav nrog copolymer ntawm propylene thiab ib qho me me ntawm ethylene. Feem ntau translucent xim tsis muaj xim, tsw ntxhiab tsis muaj tshuaj lom.
Nta: non-toxic, tasteless, tsawg ntom, lub zog, nruj, hardness thiab kub tsis kam yog zoo dua tsis tshua muaj siab polyethylene, yuav siv tau ntawm 100 degrees los yog li ntawd. Cov khoom siv hluav taws xob zoo thiab cov hluav taws xob ntau zaus tsis cuam tshuam los ntawm cov av noo, tab sis ua nkig ntawm qhov kub thiab txias, tsis hnav resistant, yooj yim rau hnub nyoog. Haum rau kev ua cov khoom siv dav dav, cov khoom tiv thaiv corrosion thiab rwb thaiv tsev.
PVC yog ib lub ntiaj teb loj tshaj plaws ntawm cov khoom yas, pheej yig, dav siv, polyvinyl chloride resin yog dawb los yog lub teeb daj hmoov. Cov khoom sib txawv tuaj yeem muab ntxiv raws li USES sib txawv, thiab polyvinyl chloride plastics muaj qhov sib txawv ntawm lub cev thiab cov khoom siv kho tshuab. Ntxiv cov yas yas kom zoo hauv polychloroethylene resin tuaj yeem ua rau ntau yam khoom tawv, muag muag thiab pob tshab. Qhov ceev ntawm PCC ntshiab yog 1.4g / cm3, thiab qhov ceev ntawm PCC plasticizers thiab fillers feem ntau yog 1.15-2.00g / cm3. Hard POLYchloroethylene muaj tensile zoo, flexural, compressive thiab cuam tshuam tsis kam thiab tuaj yeem siv los ua cov khoom siv ib leeg.
Post lub sij hawm: Nov-03-2020