Nzira dzekugadzira Polyethylene uye Mhando
(1) Polyethylene Yakaderera (LDPE)
Kana huwandu hushoma hweokisijeni kana peroxides hukawedzerwa sezvinhu zvinotanga ku ethylene yakachena, yakamanikidzwa kusvika pa202.6 kPa, uye yopiswa kusvika pa200°C, ethylene inopomera kuita polyethylene chena, ine wakisi. Nzira iyi inowanzonzi maitiro ekumanikidzwa kwepamusoro nekuda kwemamiriro ekushanda. Polyethylene inobuda ine huwandu hwe0.915–0.930 g/cm³ uye huremu hwemamorekuru hunotangira pa15,000 kusvika 40,000. Maumbirwo ayo emamorekuru ane matavi akawanda uye akasununguka, akafanana nechimiro che "muti", icho chinomiririra huwandu hwayo hushoma, saka zita racho rinonzi polyethylene ine huwandu hwakaderera.
(2) Polyethylene ine huwandu hwepakati (MDPE)
Maitiro ekumanikidzwa kwepakati anosanganisira kupomesa ethylene pasi pemhepo 30-100 uchishandisa metal oxide catalysts. Polyethylene inobuda ine density ye 0.931–0.940 g/cm³. MDPE inogonawo kugadzirwa nekusanganisa high-density polyethylene (HDPE) neLDPE kana kuburikidza ne copolymerization ye ethylene nemacomonomers akadai se butene, vinyl acetate, kana acrylates.
(3) Polyethylene Yakanyanya Kuwanda (HDPE)
Mumamiriro ezvinhu ekupisa nekumanikidzwa kwakajairika, ethylene inogadziriswa polymer uchishandisa ma catalyst anoshanda zvakanyanya (organometallic compounds anoumbwa nealkylaluminum uye titanium tetrachloride). Nekuda kwebasa guru re catalytic, polymerization reaction inogona kuitwa nekukurumidza pakumanikidzwa kwakaderera (0–10 atm) uye tembiricha yakaderera (60–75°C), saka inonzi low-pressure process. Polyethylene inobuda ine chimiro chemorekuru chisina matavi, chinopa huwandu hwayo hwepamusoro (0.941–0.965 g/cm³). Kana ichienzaniswa neLDPE, HDPE inoratidza kudzivirira kupisa kwakanyanya, hunhu hwemakanika, uye kudzivirira kushushikana kwezvakatipoteredza.
Hunhu hwePolyethylene
Polyethylene ipurasitiki chena yakaita semukaka, yakaita sewakisi, inoonekera zvishoma, zvichiita kuti ive chinhu chakanakira kuputira nekuvhara waya netambo. Zvakanakira zvayo zvikuru zvinosanganisira:
(1) Hunhu hwakanaka hwemagetsi: kudzivirira kupisa kwakanyanya uye simba re dielectric; permittivity shoma (ε) uye dielectric loss tangent (tanδ) munzvimbo yakakura yema frequency, ine frequency shoma, zvichiita kuti ive dielectric yakakodzera tambo dzekutaurirana.
(2) Hunhu hwakanaka hwemakanika: hunochinjika asi hwakasimba, hune simba rekudzivirira kukanganisika.
(3) Kuramba kwakasimba kukwegura kwekupisa, kuputsika kwekupisa kushoma, uye kugadzikana kwemakemikari.
(4) Kudzivirira mvura zvakanaka uye kunyorova kwakaderera; kudzivirira kudziya hakudziki kana kwakanyudzwa mumvura.
(5) Sechinhu chisiri chepolar, chinoratidza kupenya kwegasi kwakawanda, neLDPE ine kupenya kwegasi kwakanyanya kupfuura mamwe mapurasitiki.
(6) Huremu hwakaderera, hwese huri pasi pe1. LDPE inonyanya kuzivikanwa pa0.92 g/cm³, nepo HDPE, pasinei nekuwanda kwayo, iri pa0.94 g/cm³ chete.
(7) Hunhu hwakanaka hwekugadzirisa: zviri nyore kunyungudutsa uye kuita purasitiki pasina kuora, inotonhorera nyore nyore kuita chimiro, uye inobvumira kutonga kwakanyatsojeka pamusoro pemaumbirwo echigadzirwa uye saizi yacho.
(8) Tambo dzakagadzirwa nepolyethylene dzakareruka, dziri nyore kuisa, uye dziri nyore kudzima. Zvisinei, polyethylene inewo zvimwe zvinhu zvisingabatsiri: tembiricha yakaderera; haibatike, inoburitsa hwema hwakaita separafini kana yapiswa; haipindi zvakanaka pakurwisa kushushikana kwezvakatipoteredza uye haipindike. Kunyatsotarisirwa kunodiwa pakushandisa polyethylene sekudzivirira kana kuputira tambo dzemugungwa kana tambo dzakaiswa mumadonhwe akadzika.
Mapurasitiki ePolyethylene eWaya neTambo
(1) Purasitiki yePolyethylene Inodzivirira Zvine Chinangwa Chakawanda
Yakagadzirwa chete ne polyethylene resin uye antioxidants.
(2) Polyethylene Plastiki Inodzivirira Mamiriro Ekunze
Zvinonyanya kugadzirwa ne polyethylene resin, antioxidants, uye kabhoni dema. Kusashanda kwemamiriro ekunze kunoenderana nehukuru hwezvidimbu, zviri mukati, uye kupararira kwekabhoni dema.
(3) Polyethylene Plastiki Inodzivirira Kushungurudzika Kwezvakatipoteredza
Inoshandisa polyethylene ine chiyero chekuyerera kwemvura iri pasi pe0.3 uye kupararira kwehuremu hwemamorekuru kwakamanikana. Polyethylene inogonawo kubatanidzwa kuburikidza nemwaranzi kana nzira dzemakemikari.
(4) Plastic yePolyethylene Inodzivirira Mavhiri Akawanda
Kudzivirira tambo dzine voltage yakawanda kunoda purasitiki yakachena kwazvo yepolyethylene, inowedzerwa nezvinodzivirira voltage uye zvinhu zvakasiyana-siyana zvinodzivirira kuumbwa kwemhepo, kudzvinyirira kubuda kwe resin, uye kuvandudza kuramba kwe arc, kuramba kukanganiswa ne electrical erosion, uye kuramba corona.
(5) Purasitiki yePolyethylene Inofamba Nemhepo
Zvinogadzirwa nekuwedzera kabhoni nhema inofambisa mhepo mu polyethylene, kazhinji uchishandisa kabhoni nhema ine zvidimbu zvitete, ine chimiro chakakwirira.
(6) Thermoplastic Low-Smoke Zero-Halogen (LSZH) Polyolefin Cable Compound
Musanganiswa uyu unoshandisa polyethylene resin sechinhu chepakutanga, kusanganisira zvinoderedza moto zvisina halogen, zvinoderedza utsi, zvinosimbisa kupisa, zvinouraya fungus, uye zvinopenda, zvinogadziriswa kuburikidza nekusanganisa, kuisa purasitiki, uye kuisa pelletization.
Polyethylene Yakabatana (XLPE)
Pasi pesimba remwaranzi ine simba guru kana kuti zvinobatanidza, chimiro chemolecular chepolyethylene chinoshanduka kuita chimiro chetatu-dimensional (network), zvichishandura thermoplastic material kuita thermoset. Kana ikashandiswa se insulation,XLPEinogona kutsungirira tembiricha dzinogara dzichishanda kusvika 90°C uye tembiricha pfupi ye170–250°C. Nzira dzekubatanidza dzinosanganisira kubatanidza kwemuviri nekwemakemikari. Kubatanidza kwemwaranzi inzira yepanyama, nepo makemikari anonyanya kubatanidzwa ari DCP (dicumyl peroxide).
Nguva yekutumira: Kubvumbi-10-2025