Zvinhu zvakasiyana, PE: polyethylene, PP: polypropylene
PP ipurasitiki inotambanuka yepolypropylene, inova rudzi rwe thermoplastic.PP mabhegi chaiwo epurasitiki mabhegi.Hunhu hwePP mabhegi haana-chepfu uye haana kuravira.Iyo yepamusoro yePP bhegi yakatsetseka uye yakajeka, uye inoshandiswa zvakanyanya mukurongedza kwezvizoro, chikafu, matoyi, zvipfeko, zvekunyorera, zvemagetsi, zvigadzirwa zvehardware uye mamwe maindasitiri.Rudzi rwebhegi rePP rakajeka, hunhu hwakanaka, kusimba kwakanaka, hwakasimba, uye haugone kukweshwa.Mutengo wekugadzirisa wemabhegi ePP wakachipa kwazvo, uye maitiro ndeaya: nyore kupisa, murazvo wakanyunguduka uye uchidonha, yekumusoro ndeyeyero uye yepasi ibhuruu, mushure mekusiya moto, kune hutsi hushoma uye kupisa kunoenderera.
PE chidimbu che polyethylene, inova rudzi rwe thermoplastic resin yakagadzirwa ne polymerization ye ethylene.Polyethylene haina hwema, haina muchetura, inonzwa kunge wakisi, ine yakanakisa kudzikira tembiricha kuramba (tembiricha yakaderera inogona kusvika -70～-100 ℃), ine kugadzikana kwakanaka kwemakemikari, uye inogona kumira mazhinji acids uye alkalis (isingamiri kune oxidizing zvivakwa) Acid), isinganyunguriki mune zvakajairwa zvinonyungudutsa tembiricha yekamuri, kunyura kwemvura yakaderera, yakanakisa magetsi ekudzivirira zvivakwa;asi polyethylene inonyatsonzwa kushushikana kwezvakatipoteredza (kemikari nemakanika mhedzisiro), uye ine hurombo hwekupisa kuchembera kuramba.Izvo zvinhu zve polyethylene zvinosiyana kubva kumarudzi kune marudzi, kunyanya zvichienderana nekugadzirwa kwema molecular uye density.Nzira dzakasiyana dzekugadzira dzinogona kushandiswa kuwana zvigadzirwa zvine density dzakasiyana (0.91～0.96g/cm3).Uye zvakare, iyo yepurasitiki kuputira yePE zvinhu inogona zvakare kunzi PE bhegi.Ziva kuti kuputira kwepurasitiki kunosangana zvakananga nechikafu kunofanirwa kugadzirwa nezvinhu zvePE, izvo zvakachengeteka kumuviri wemunhu.
Nguva yekutumira: Jun-17-2021