Ma polypropylene (PP) resins ndi ma thermoplastic polymers, zomwe zikutanthauza kuti amatha kupangidwa ndi kutentha ndikusungunukanso popanda kutaya mawonekedwe awo enieni. Ma thermoplastics amasiyana motere ndi ma thermosets, omwe amasinthidwa kosatha akauma. Ma thermoplastics nthawi zambiri amatha kubwezeretsedwanso pachifukwa ichi. Ma thermoplastics ena ndi polyethylene, polyvinyl chloride, polystyrene, polycarbonate, acrylic, acrylonitrile butadiene styrene, nayiloni, ndi polytetrafluoroethylene.
Ma polypropylene resins nthawi zambiri amakhala ma polima osawoneka bwino, otsika kwambiri okhala ndi mawonekedwe abwino kwambiri a thermoforming ndi jakisoni. Poyerekeza ndi ma polima ena, zinthuzo zimakhala ndi kutentha kochepa, zimakhala zofooka pansi pa -20°C ndipo sizingagwiritsidwe ntchito kutentha kopitilira 120°C. Zimapikisana makamaka ndi polyethylene ndipo zimatha kupangidwa kuti ziwonekere bwino pazinthu monga mapaketi owonekera, pomwe polyethylene imatha kupangidwa kuti iwonekere bwino, monga m'mabotolo a mkaka, mwachitsanzo. Polypropylene silingafanane ndi kuwala kwa ma polima monga polycarbonate koma imachita bwino kwambiri.
Ma polypropylene homopolymers ndi ma polypropylene copolymers ndi omwe amapanga ma polypropylene ambiri masiku ano. Homopolymer ndi mtundu wogwiritsidwa ntchito kwambiri, womwe uli ndi propylene monomer imodzi, ndipo ndi semi-crystalline mu mawonekedwe. Ma copolymers osiyanasiyana amapezeka, omwe, poyerekeza ndi homopolymer, amakhala ofewa kwambiri, okana kukhudza bwino, okhazikika bwino komanso olimba, okhazikika kutentha pang'ono, komanso okana kusweka bwino. Mtundu wogwiritsidwa ntchito kwambiri ndi womwe umalimbikitsidwa pokhudzana ndi chakudya komanso kugwiritsa ntchito komwe kuuma ndikofunikira. Kuphatikiza kwina kwa ma co- ndi ma homopolymers kumabweretsa zinthu zomwe zimakhala ndi mphamvu yayikulu (PP impact copolymer); kapena, zosakanikirana ndi ethylene ndi butane, zabwino kwambiri zotsekera filimu (PP terpolymer); kapena zinthu zabwino kwambiri zamakaniko monga kusungunuka ndi kukulitsa (PP HMS). Polypropylene imapezeka ngati thovu lokulitsa, lotsika, lotsekedwa (EPP).
Kutentha kochepa kwa polypropylene kumapangitsa kuti zikhale zovuta kuigwiritsa ntchito pamakina ndipo palibe chomwe chachitika kuti apange ulusi woyenera kusindikiza mu 3D. Komabe, kukhuthala kwake kochepa pa kutentha kosungunuka kumapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito popanga zinthu zotulutsa ndi kupanga zinthu, kuphatikizapo kupanga zinthu zophwanyika, kupanga zinthu zopondereza, ndi kupanga zinthu zozungulira, mwachitsanzo.
Mosiyana ndi ma thermoplastic ambiri, polypropylene simatenga chinyezi mosavuta, ndipo nthawi zambiri imatha kupangidwa popanda kuyikidwa koyamba mu nthawi yowuma.
| Unikani pulojekitiyi |
kuyenera index |
chifukwa |
kuyesera njira |
|
Maonekedwe a granular Tinthu ta utoto, munthu/kg Njere zazikulu ndi zazing'ono, g/kg |
≤10 ≤10 |
0 0 |
SH/T 1541-2006 |
|
Kuchuluka kwa madzi osungunuka (2.16kg), g/ 10min |
25-35 | 27 | Q/SY DS 0513 |
| Kupsinjika kwa kukweza mphamvu, MP a | ≥21.0 | 23.5 | Q/SY DS 0515 |
| Kupinda modulus, GPa | ≥1.0 | 1.401 | Q/SY DS 0516 |
| Mphamvu ya Izod Impact ya 23℃,J/m | ≥80 | 117 | Q/SY DS 0517 |
| Izod Impact Strength-20℃,J/m |
leni oyezera |
75.5 | Q/SY DS 0517 |
| Chizindikiro chachikasu | ≤4.0 | -4.6 | Q/SY DS 0514 |
| Phulusa la tirigu,% |
leni muyeso |
0.0281 | GB / T 9345.1-2008 |
Kugwiritsa ntchito kwakukulu kwa propylene kungagawidwe m'magulu asanu: kupanga jakisoni wa PP, kujambula kwa PP, ulusi wa PP, filimu ya PP, chitoliro cha PP.
1. Kuumba jakisoni wa PP
Pulasitiki ya PP imagwiritsidwa ntchito kwambiri mu zipangizo zazing'ono zapakhomo, zoseweretsa, makina ochapira, zida zamagalimoto ndi zina zotero.
2. Chojambula cha waya wa PP
Chojambula cha waya wa polypropylene chimagwiritsidwa ntchito makamaka popanga zinthu zopangidwa ndi pulasitiki, zomwe zimagwiritsidwa ntchito tsiku ndi tsiku monga matumba a chidebe, matumba opangidwa ndi nsalu, matumba a chakudya ndi matumba owonekera ndi zinthu zopangira zinthu zopangira waya wa PP.
3. Filimu ya PP
Filimu ya polypropylene nthawi zambiri imagawidwa mu filimu ya BOPP, filimu ya CPP, filimu ya IPP, ndipo filimu ya PP imagwiritsidwa ntchito kwambiri popaka chakudya.
4. Ulusi wa PP
Ulusi wa polypropylene ndi mtundu wa ulusi wopangidwa kuchokera ku polypropylene pogwiritsa ntchito kusungunula. Amagwiritsidwa ntchito makamaka pokongoletsa, zovala ndi zinthu zina, kuyambira pomwe mfundo ya ana awiri idakhazikitsidwa mu 2011, ma wipes onyowa, matewera ndi zinthu zina za amayi ndi makanda zidawonjezeka, komanso kusowa kwa zinthu za ulusi m'nyumba.
5. Chitoliro cha PP
Chifukwa cha kukana kwa polypropylene kopanda poizoni komanso kutentha kwambiri, zinthu za PP chitoliro zimagwiritsidwa ntchito makamaka mu dongosolo la madzi ndi kutentha, poyerekeza ndi chitoliro cha PE, kulemera kwa chitoliro cha PP ndi kopepuka, mayendedwe osavuta, ndipo chitetezo cha chilengedwe ndi chabwino, chitha kubwezeretsedwanso.
Kulongedzako kuli m'matumba apulasitiki olemera makilogalamu 25, omwe amatha kunyamulidwa ndi sitima kapena panyanja ndikusungidwa m'nyumba yosungiramo zinthu youma.
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