Mapaipi ndi zovekera za PP-R ndizokhazikitsidwa ndi polypropylene yopangidwa mwaluso ngati zopangira zazikulu ndipo zimapangidwa molingana ndi GB / T18742. Polypropylene itha kugawidwa mu PP-H (homopolymer polypropylene), PP-B (block copolymer polypropylene), ndi PP-R (mwachisawawa copolymer polypropylene). Kawiri khoma corrugated chitoliro makina amachita mbali yofunika kwambiri mu kupanga chitoliro. PP-R ndizothandiza kwa mapaipi a polypropylene amadzi otentha ndi ozizira chifukwa chokana kukakamiza kwa hydrostatic, kukalamba kwa okosijeni kosachedwa kutentha komanso kukonzanso ndikuwumba.
Kodi PP-R chubu ndi chiyani?
PP-R chitoliro amatchedwanso atatu mtundu polypropylene chitoliro. Imagwiritsa polypropylene mwachisawawa polypropylene kuti extruded mu chitoliro, ndi jekeseni-kuumbidwa mu chitoliro. Ndi mtundu watsopano wazogulitsa pulasitiki zopangidwa ndikugwiritsidwa ntchito ku Europe koyambirira kwa zaka za m'ma 1990. PP-R idawonekera kumapeto kwa zaka za m'ma 80, ndikugwiritsa ntchito njira yamagetsi yopangira mpweya kuti apange pafupifupi 5% PE mu tinthu tating'onoting'ono ta PP mosasinthasintha komanso mosasinthasintha (pololymerization mwachisawawa) kuti akhale mbadwo watsopano wazipangizo. Imakhala ndi kukana kwamphamvu komanso magwiridwe antchito kwakanthawi.
Kodi mawonekedwe a mapaipi a PP-R ndi ati? Chitoliro cha PP-R chili ndi izi:
1. opanda poizoni ndi ukhondo. Mamolekyulu opangira a PP-R amangokhala kaboni ndi haidrojeni. Palibe zinthu zowopsa komanso zowopsa. Ndi zaukhondo komanso zodalirika. Sagwiritsidwanso ntchito m'mipope yamadzi otentha komanso ozizira, komanso amagwiritsidwa ntchito m'madzi amadzi oyera akumwa.
2.Kutentha ndi kuteteza mphamvu. Kutentha kwa chitoliro cha PP-R ndi 0.21w / mk, yomwe ndi 1/200 yokha ya chitoliro chachitsulo.
3.wotentha kukana. Malo osinthira vicat a chubu la PP-R ndi 131.5 ° C. Kutentha kwakukulu kogwira ntchito kumatha kufikira 95 ° C, komwe kungakwaniritse zofunikira zamadzi otentha pakupanga mawonekedwe amadzi ndi ngalande.
4.Long moyo utumiki. Moyo wogwira ntchito wa chitoliro cha PP-R ukhoza kufikira zaka zoposa 50 pansi pa kutentha kwa 70 ℃ ndikukakamiza kugwira ntchito (PN) 1.OMPa; moyo wautumiki wa kutentha kwabwino (20 ℃) ukhoza kufikira zaka zoposa 100.
5.Easy unsembe ndi kugwirizana odalirika. PP-R ili ndi magwiridwe antchito abwino. Mapaipi ndi zovekera zitha kulumikizidwa ndi kusungunuka kotentha komanso magetsi, omwe ndiosavuta kukhazikitsa komanso odalirika polumikizira mafupa. Mphamvu zamagawo olumikizidwa ndizoposa mphamvu ya chitoliro pachokha.
6.Material akhoza zobwezerezedwanso. Zinyalala za PP-R zimatsukidwa ndikuphwanyidwa ndikupangidwanso kuti apange chitoliro ndi chitoliro. Kuchuluka kwa zinthu zobwezerezedwanso sikupitilira 10% ya ndalama zonse, zomwe sizimakhudza mtundu wazogulitsa.
Kodi gawo lalikulu la mapaipi a PP-R ndi ati?
1. Makina ozizira komanso otentha amnyumba, kuphatikiza makina otenthetsera pakati;
2. Makina otenthetsera nyumbayi, kuphatikiza pansi, kusanja ndi mawonekedwe otenthetsera;
3.Pure madzi dongosolo la kumwa mwachindunji;
4.Central (centralized) makina owongolera mpweya;
5. Makina amapaipi amakampani onyamula kapena kutulutsa media.
Nthawi yamakalata: May-19-2021