Kusanthula kwazinthu zopangira za HDPE mivuto iwiri yamakhoma
Kusanthula kwazinthu zopangira za HDPE mvuto iwiri yamakhoma,
HDPE utomoni wa mavuvu awiri khoma, momwe mungasankhire utomoni wa HDPE pamivuto iwiri ya khoma,
Zomwe zimafunikira pamtundu wa polyethylene (PE) zimaphatikizapo kusungunuka kwamadzi (MFR), kachulukidwe, flexure zotanuka modulus ndi oxidation induction nthawi (OIT), mphamvu yamphamvu, ndi zina zambiri. , volatiles ndi nthawi ina yopangira okosijeni imatsimikizira nthawi ya kuwonongeka kwa okosijeni.Kwa mavuvu omwe amafunikira zaka 50 akugwiritsidwa ntchito, kuwongolera nthawi yoyika ma oxidation yazinthu zopangira ndiye chinsinsi chotsimikizira moyo wautumiki wazaka 50.Zanenedwa momveka bwino mu GB/T19472.1-2004 kuti nthawi yopangira makutidwe ndi okosijeni yazinthu zopangira mavuvu iyenera kukhala ≥20min(200℃).
The elastic modulus ya HDPE resin imakhudza kwambiri kuuma kwa mphete.Zida zokhala ndi modulus zotanuka kwambiri zimatha kukulitsa kuuma kwa mphete, komanso kupulumutsa zida zopangira ndikuchepetsa mtengo potengera kulimba kwa mphete.Chifukwa chake popanga mvuto wapawiri wa HDPE, zopangira zomwe zimagwiritsidwa ntchito ziyenera kukhala ndi modulus yapamwamba kwambiri.Kukula kwa kusungunuka kwa madzi kumawonetsa kukula kwa kulemera kwa maselo.Nthawi zambiri, zinthu zomwe zimakhala ndi chiwongolero chapamwamba chosungunuka zimathandizira kukonza ndi kupanga, ndipo zimatha kupititsa patsogolo kupanga bwino.Komabe, sizingakhale zazikulu kwambiri, zomwe zimakhudza kwambiri kuuma kwa mphete.Pa nthawi yomweyo, ayenera kukhala mkulu kachulukidwe ndi wabwino processing ntchito ndi kusinthasintha zida.
Kalasi ya chitoliro cha HDPE ili ndi kugawa kwakukulu kapena kugawanika kwa ma molekyulu.Imakhala ndi kukana kolimba kwamphamvu komanso kukhazikika bwino kwa kuuma komanso kulimba.Ndi yolimba kwambiri ndipo imakhala ndi sag yochepa pamene ikukonzedwa.Mapaipi opangidwa pogwiritsa ntchito utomoni uwu amakhala ndi mphamvu zabwino, zolimba komanso zolimba komanso zolimba za SCG ndi RCP..
Utoto uyenera kusungidwa m'nyumba yosungiramo madzi, youma komanso kutali ndi moto ndi dzuwa.Asamawunjikane panja.Panthawi yoyendetsa, zinthuzo zisawonongeke ndi dzuwa lamphamvu kapena mvula ndipo siziyenera kunyamulidwa pamodzi ndi mchenga, nthaka, zitsulo, malasha kapena galasi.Kuyendera limodzi ndi zinthu zapoizoni, zowononga komanso zoyaka moto ndizoletsedwa.
Kugwiritsa ntchito
HDPE chitoliro kalasi angagwiritsidwe ntchito kupanga mipope kuthamanga, monga mapaipi amadzi opsinjidwa, mapaipi gasi mafuta ndi mapaipi ena mafakitale.Itha kugwiritsidwanso ntchito popanga mapaipi osaponderezedwa monga mapaipi okhala ndi malata apawiri, mapaipi omangira makhoma, mapaipi a silicon-core, mapaipi amthirira waulimi ndi mapaipi apawiri a aluminiumplastics.Kuonjezera apo, kudzera mu extrusion yogwira ntchito (silane cross-linking), itha kugwiritsidwa ntchito popanga mapaipi ophatikizika a polyethylene (PEX) popereka madzi ozizira ndi otentha.
