Polypropylene (PP), raws li qhov saum toj kawg nkaus -muag dav - lub hom phiaj thermoplastic resin, tshuav nws qhov kev siv dav rau ntau qhov sib npaug thiab tswj tau qhov zoo. Cov khoom no tsis tsuas yog txiav txim siab txog kev ntseeg siab ntawm cov khoom siv hauv kev ua haujlwm sib txawv tab sis kuj tseem muab lub hauv paus ruaj khov rau cov khoom tsim thiab kev tsim khoom hauv ntau qhov kev lag luam.
Nyob rau hauv cov nqe lus ntawm txhua yam khoom, PP muaj siab rigidity, hardness, thiab qaug zog kuj. Nws cov qauv isotactic, tshwj xeeb tshaj yog vim nws cov saw hlau molecular tsis tu ncua thiab crystallinity siab, tuaj yeem tiv taus cov khoom tsis tu ncua tsis yooj yim deforming, ua rau nws haum rau kev thauj khoom -cov kabmob thiab cov khoom lag luam ntev -. Kev nthuav qhia ethylene ntu los ntawm kev hloov pauv copolymerization tuaj yeem txhim kho qis - qhov kub thiab txias cuam tshuam, tso cai rau cov khoom kom muaj kev ncaj ncees nyob rau hauv qhov chaw txias los yog nyob rau hauv tej yam kev mob, ua tau raws li qhov yuav tsum tau nruj toughness ntawm daim ntaub ntawv xws li tsheb bumpers thiab industrial ntim.
Nyob rau hauv cov nqe lus ntawm thermal zog, PP muaj ib tug melting point ntawm kwv yees li 160-170℃thiab yuav siv tau tsis tu ncua hauv qab 100 degree, ua tau raws li qhov yuav tsum tau ntawm tshav kub kub ntawm cov neeg siv khoom niaj hnub feem ntau thiab lub teeb muaj kev siv. Nws cov iav hloov pauv kub yog li ntawm -10℃mus rau 0 degree, txiav txim siab nws qhov kev ua haujlwm kub ntawm chav tsev kub. Txawm hais tias PP nyhav dhau los ua nkig ntawm qhov kub thiab txias, nws qhov ntsuas kub siv tau tuaj yeem nthuav dav los ntawm kev hloov kho thiab kev hloov kho.
Chemically, nws pom zoo heev corrosion kuj. PP ua kom pom kev ua siab ntev rau cov kua qaub, alkalis, ntsev, thiab ntau cov kuab tshuaj organic, thiab tsis ua rau o lossis degradation. Yog li ntawd, nws tseem ruaj khov thiab txhim khu kev qha nyob rau hauv ib puag ncig uas yuav tsum tau ntev -lub sij hawm sib cuag nrog corrosive media, xws li cov ntim tshuaj, ntim khoom noj, thiab cov khoom siv kho mob. Nws cov khoom hluav taws xob rwb thaiv tsev kuj zoo heev, nrog lub dielectric tsis tu ncua thiab siab ntim resistivity, ua rau nws tsim nyog rau insulating Cheebtsam hauv cov khoom siv hluav taws xob thiab hluav taws xob.
Lub cev, PP muaj qhov ntom ntawm tsuas yog 0.90-0.91 g / cm³, ua rau nws yog ib qho ntawm cov khoom siv sib sib zog nqus. Qhov no txhawb nqa qhov hnyav ntawm cov khoom thiab kev txuag hluav taws xob thaum lub sij hawm kev thauj mus los, ua raws cov qauv ntawm lub teeb yuag automotive thiab ntsuab logistics. Nws lub zog nruab nrab ntawm lub zog ua kom yooj yim luam ntawv, sib txuas, thiab txheej, ua kom muaj kev sib koom ua ke ntawm cov tsos thiab ua haujlwm hauv cov khoom kawg.
Kev ua tau zoo yog lwm qhov tseem ceeb ntawm PP. Nrog zoo yaj flowability thiab nruab nrab thermal stability, nws yuav ua tau zoo molded siv ntau yam mature txheej txheem xws li txhaj molding, extrusion, tshuab moulding, spinning, thiab thermoforming. Cov khoom lag luam suav nrog cov yeeb yaj kiab, fibers, cov kav dej, cov ntawv txheeb, thiab cov txheej txheem ua haujlwm nyuaj. Kev ua tiav cov saw hlau muab cov txiaj ntsig zoo hauv kev tsim khoom thiab tswj tus nqi.
Tsis tas li ntawd, PP yog recyclable; Tom qab yaj granulation, nws tuaj yeem siv rau hauv cov khoom tshiab, txo cov peev txheej siv thiab pov tseg. Kev tshawb nrhiav bio-raws li txoj hauv kev sib txuas ntxiv txhim kho nws cov khoom siv raw khoom ruaj khov.
Zuag qhia tag nrho, polypropylene, nrog nws cov khoom sib npaug, thermal, tshuaj lom neeg, lub cev, thiab kev ua haujlwm, ua ke nrog nws cov peev txheej ib puag ncig, muab kev txhawb nqa zoo rau kev hla - kev lag luam daim ntawv thov thiab yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv cov khoom siv tshiab thiab kev hloov kho tshiab.