PP kupatsanura uye zvivakwa zvakanakira uye zvisingabatsiri:
Polypropylene (PP) yakakamurwa kuita homo-polymer polypropylene (PP-H), block (impact) co-polymer polypropylene (PP-B) uye random (random) co-polymer polypropylene (PP-R).Ndezvipi zvakanakira, zvisingabatsiri uye kushandiswa kwePP?Govera iwe nhasi.
1. Homo-polymer polypropylene (PP-H)
Iyo ine polymerized kubva kune imwechete propylene monomer, uye iyo molecular cheni haina ethylene monomer, saka kujairana kweiyo molecular cheni kwakakwira zvakanyanya, saka zvinyorwa zvine yakakwira crystallinity uye kusashanda zvakanaka.Kuti uvandudze brittleness yePP-H, vamwe vatengesi vezvinhu zvakasvibirira vanoshandisawo nzira yekubatanidza polyethylene uye ethylene-propylene rubber kuti ivandudze kuoma kwezvinhu, asi haigone kugadzirisa zvakanyanya kugadzikana kwenguva refu-kusagadzikana kwePP. -H.performance
Zvakanakira: simba rakanaka
Zvakashata: kushomeka kwemaitiro kuramba (zvakanyanya brittle), kusimba kushoma, kusasimba kwechimiro, kuchembera kuri nyore, kushomeka kwenguva refu kwekupisa kupisa.
Application: Extrusion blowing giredhi, flat thread giredhi, jekiseni rekuumba giredhi, faibha giredhi, kupeperetswa firimu giredhi.Inogona kushandiswa kusungirira, kuputira mabhodhoro, mabhurashi, tambo, mabhegi akarukwa, matoyi, maforodha, midziyo yemagetsi, zvinhu zvemumba, microwave lunch mabhokisi, mabhokisi ekuchengetera, kuputira mapepa mafirimu.
Kusarura nzira: kana moto wapisa, waya yakadzikama, uye haina kureba.
2. Random (random) copolymerized polypropylene (PP-R)
Inowanikwa ne-co-polymerization yepropylene monomer uye shoma shoma ye ethylene (1-4%) monomer pasi pechiito chekupisa, kudzvinyirira uye catalyst.Iyo ethylene monomer inogovaniswa uye zvisina tsarukano kugovaniswa muketani refu yepropylene.Kuwedzerwa kusingatarisirwi kwe ethylene kunoderedza crystallinity uye kunyunguduka kwepolymer, uye inovandudza kushanda kwezvinhu maererano nemigumisiro, kwenguva yakareba hydrostatic pressure resistance, kukwegura kwemhepo inopisa, uye kushandiswa kwepombi nekuumbwa.PP-R molecular chain dhizaini, ethylene monomer zvemukati uye zvimwe zvinongedzo zvine mhedzisiro yakanangana nekureba kwekudziya kwekushisa, zvivakwa zvemuchina uye kugadzirisa zvinhu.Kunyanya kurongeka kugoverwa kwe ethylene monomer mu propylene molecular chain, inonyanya kukosha shanduko ye polypropylene properties.
Zvakanakira: kuita kwakanaka kuzere, kusimba kwepamusoro, kusimba kwepamusoro, kumira zvakanaka kwekupisa, kugadzikana kwakanaka kwechimiro, kusimba kwekushisa kwakanyanya (kushanduka kwakanaka), kujeka kwakanaka, kupenya kwakanaka.
Zvakaipa: kuita kwakanyanya muPP
Kushandisa: Extrusion kuvhuvhuta giredhi, firimu giredhi, jekiseni kuumba giredhi.Machubhu, mafirimu anodzikira, mabhodhoro ekudonha, midziyo inoonekera zvakanyanya, zvinhu zvemumba zvinoonekera, majekiseni anoraswa, mapepa ekuputira mafirimu.
Chiziviso nzira: haishanduke nhema mushure mekupisa, uye inogona kuburitsa waya refu yakatenderera
3. Vhara (impact) co-polymer polypropylene (PP-B)
Iyo ethylene yemukati yakakwira zvakanyanya, kazhinji 7-15%, asi nekuda kwekuti mukana wekubatanidza maviri ethylene monomers uye matatu monomers muPP-B akakwira zvakanyanya, zvinoratidza kuti sezvo ethylene monomer inongowanikwa muchikamu che block, iyo nguva dzose. yePP-H yakaderedzwa, saka haigoni kuwana chinangwa chekuvandudza kushanda kwePP-H maererano nekunyunguduka, kwenguva refu hydrostatic pressure resistance, kwenguva yakareba inopisa kuchembera kweokisijeni uye kushandiswa kwepombi nekugadzira.
Zvakanakira: zvirinani kukanganisa kuramba, imwe dhigirii yekuomarara inovandudza simba rekuita
Kukanganisa: kuderera kwakadzika, kupenya kwakaderera
Application: Extrusion giredhi, jekiseni kuumba giredhi.Mabhampa, zvigadzirwa zvine madziro matete, zvitambi, midziyo yemitambo, mukwende, mabhaketi ependi, mabhokisi ebhatiri, zvigadzirwa zvine madziro matete
Chiziviso nzira: haishanduke nhema mushure mekupisa, uye inogona kuburitsa waya refu yakatenderera
Mapoinzi akajairwa: anti-hygroscopicity, asidhi uye alkali corrosion resistance, solubility resistance, kushomeka oxidation kuramba pakupisa kwakanyanya.
Kuyerera kweMFR yePP iri muhuwandu hwe1-40.PP zvinhu zvine yakaderera MFR zvine zvirinani kukanganisa kuramba asi yakaderera ductility.Pamusoro pezvinhu zvakafanana zveMFR, simba remhando ye-co-polymer yakakwirira kudarika yemhando yehomo-polymer.Nekuda kwekristaro, iyo shrinkage yePP yakanyanya kukwirira, kazhinji 1.8-2.5%.
