Chii chinonzi General Zvinhu zvePolyethylene Resin
General Zvinhu zvePolyethylene Resin
Polyethylene resin isiri-chepfu, isina kunhuhwirira chena poda kana granule, chena mukaka pachimiro, iine wax-kunzwa, uye kunyura kwemvura, isingasviki 0.01%. Iyo polyethylene firimu iri pachena uye inoderera nekuwedzera crystallinity. Iyo polyethylene firimu ine yakaderera mvura permeability asi yakakwirira mhepo permeability, iyo isingakodzeri kutsva-kuchengeta kurongedza asi yakakodzera kune hunyoro-uchapupu kurongedza. Inopfuta, ine okisijeni indekisi ye17.4, utsi hushoma kana uchitsva, madonhwe mashoma akanyunguduka, yero pamurazvo uye yebhuruu pasi, uye kunhuhwirira kweparafini. Polyethylene ine nani kudzivirira mvura. Kumusoro kwechigadzirwa hakusi-polar, kwakaoma kusungira uye kudhinda, uye yakagadziridzwa nepamusoro pekurapa. Mamwe macheni ane matavi ane kushomeka kwekushomeka kwefotodegradation uye oxidation.
Huremu hwayo hwemamorekuru huri pakati pe10,000 kusvika 100,000. Kana iyo molecular uremu ichipfuura 100,000, ndeye Ultra-yakakwirira molecular uremu polyethylene. Iyo yakakwirira iyo molecular uremu, zviri nani zvemuviri uye zvemichina zvimiro, uye padyo nedanho rinodiwa reinjiniya zvinhu. Asi kukwira kwehuremu hwema molecular, ndiko kunonyanya kuoma kugadzirisa. Polyethylene ine nzvimbo yekunyunguduka ye100-130 ° C uye ine yakanakisa kuderera kwekushisa. Iyo inogona kuramba ichichengetedza yakanaka mechanical zvivakwa pa -60 °C, asi tembiricha yekushandisa i80 ~ 110 °C.
Iyo hainyungudike mune chero inozivikanwa solvent pakamuri tembiricha, uye inogona kunyungudika mune diki mu toluene, amyl acetate, trichlorethylene uye zvimwe zvinonyungudutsa zvinopfuura 70 ° C.
Magetsi Zvivakwa zvePolyethylene Resin
Nekuti polyethylene isiri-polar, ine yakanakisa magetsi emagetsi ane yakaderera dielectric kurasikirwa uye yakakwirira dielectric simba. Inogona kushandiswa sefrequency modulation insulating material, corona-resistant plastic, uye high-voltage insulating material.
Thermal Properties
Kupisa kwekupisa kwe polyethylene hakusi kwakakwirira, uye kunovandudza nekuwedzera kwehuwandu hwema molecular uremu uye crystallinity. Yakanaka yakadzika tembiricha kuramba, iyo brittle tembiricha inogona generally kusvika pasi -50 ℃; uye nekuwedzera kwehama molecular mass, iyo yakaderera inogona kusvika -140 ℃. Iyo linear yekuwedzera coefficient ye polyethylene yakakura, kusvika (20～24) × 10-5/K. High thermal conductivity.