Nkewa PP na akụrụngwa uru na ọghọm:
A na-ekewa Polypropylene (PP) na homo-polymer polypropylene (PP-H), ngọngọ (mmetụta) co-polymer polypropylene (PP-B) na random (random) co-polymer polypropylene (PP-R).Kedu uru, ọghọm na ojiji nke PP?Kekọrịta gị ya taa.
1. Homo-polymer polypropylene (PP-H)
A na-eme ka ọ bụrụ polymerized site na otu propylene monomer, na eriri molekụla enweghị ethylene monomer, ya mere usoro ihe eji eme ihe na-emekarị ka ọ dị elu, ya mere ihe ahụ nwere nnukwu crystallinity na arụ ọrụ adịghị mma.Iji meziwanye nbibi nke PP-H, ụfọdụ ndị na-ebubata akụrụngwa na-ejikwa usoro nke ịgwakọta polyethylene na ethylene-propylene roba iji meziwanye ike nke ihe ahụ, mana ọ nweghị ike idozi nkwụsi ike na-adịgide adịgide nke PP ogologo oge. -H.arụmọrụ
Uru: ezigbo ike
Ihe ọghọm: nkwụsi ike na-adịghị mma (nke na-agbaji agbaji), isi ike na-adịghị mma, nkwụsi ike nke akụkụ adịghị mma, ịka nká dị mfe, nkwụsi ike na-eguzogide okpomọkụ ogologo oge.
Ngwa: Extrusion ịfụ ọkwa, larịị yarn ọkwa, injection ịkpụzi ọkwa, eriri ọkwa, fụọ film ọkwa.Enwere ike iji eriri, karama ịfụ, brushes, eriri, akpa a kpara akpa, ihe egwuregwu ụmụaka, nchekwa, ngwa eletriki, ihe ụlọ, igbe nri ehihie microwave, igbe nchekwa, ihe nkiri mpempe akwụkwọ.
Ụzọ ịkpa ókè: mgbe ọkụ na-ere ọkụ, waya dị larịị, ọ dịghịkwa ogologo.
2. Polypropylene copolymerized (PP-R) random (random)
A na-enweta ya site na co-polymerization nke propylene monomer na obere ethylene (1-4%) monomer n'okpuru omume nke okpomọkụ, nrụgide na ihe na-akpali akpali.A na-ekesa monomer ethylene na-enweghị usoro na enweghị usoro n'ime ogologo ogologo propylene.Ihe mgbakwunye na-enweghị atụ nke ethylene na-ebelata kristal na agbaze nke polymer, ma na-eme ka arụ ọrụ nke ihe ahụ dịkwuo mma n'ihe gbasara mmetụta, nkwụsị nrụgide hydrostatic ogologo oge, ikuku oxygen na-ekpo ọkụ na-adịte aka, na nhazi na ịkpụzi ọkpọkọ.Ihe owuwu molecular PP-R, ọdịnaya ethylene monomer na ihe ndị ọzọ na-egosi nwere mmetụta kpọmkwem na nkwụsi ike nke okpomọkụ dị ogologo oge, ihe ndị na-arụ ọrụ na nhazi nke ihe onwunwe.Ka ikesa ethylene monomer na-enweghị usoro n'ime agbụ molekul propylene, ka mgbanwe nke akụrụngwa polypropylene na-abawanye.
Uru: ezigbo arụmọrụ zuru oke, ike dị elu, nnukwu nkwụsi ike, ezigbo nguzogide okpomọkụ, nkwụsi ike akụkụ dị mma, ezigbo okpomọkụ siri ike (ezi mgbanwe), nghọta dị mma, ezigbo gloss.
Ihe ọghọm: arụmọrụ kacha mma na PP
Ngwa: Extrusion ịfụ ọkwa, ọkwa ihe nkiri, ọkwa ịkpụzi injection.Tubes, ihe nkiri na-ebelata, karama mmiri na-asọpụta, arịa ndị nwere nghọta nke ukwuu, ngwaahịa ụlọ na-apụtachaghị ìhè, sirinji a na-atụfu ihe, ihe nkiri mpempe akwụkwọ.
Usoro njirimara: ọ naghị atụgharị oji mgbe ịgbanye ọkụ, ma nwee ike ịdọrọ waya dị ogologo
3. Block (mmetụta) co-polymer polypropylene (PP-B)
Ọdịnaya ethylene dị elu dị elu, n'ozuzu 7-15%, mana n'ihi na enwere ike ijikọ ethylene monomers abụọ na monomers atọ na PP-B dị oke elu, ọ na-egosi na ebe ọ bụ na ethylene monomer dị naanị na ngọngọ ngọngọ, ihe na-aga n'ihu. nke PP-H na-ebelata, n'ihi ya, ọ pụghị imezu nzube nke imeziwanye arụmọrụ nke PP-H n'ihe gbasara ebe mgbaze, nkwụsị nrụgide hydrostatic ogologo oge, ogologo oge okpomọkụ oxygen ịka nká na nhazi ọkpọkọ na ịmepụta.
Uru: mma mmetụta na-eguzogide, a ụfọdụ n'ókè nke rigidity mma mmetụta ike
Ọdịmma: obere nghọta, obere gloss
Ngwa: ọkwa extrusion, ọkwa ịkpụzi injection.Bumpers, ngwaahịa nwere obere mgbidi, strollers, akụrụngwa egwuregwu, akpa, bọket agba, igbe batrị, ngwaahịa nwere mgbidi dị mkpa.
Usoro njirimara: ọ naghị atụgharị oji mgbe ịgbanye ọkụ, ma nwee ike ịdọrọ waya dị ogologo
Ihe ndị a na-ahụkarị: mgbochi hygroscopicity, acid na alkali corrosion resistance, solubility resistance, ogbenye oxidation resistance na elu okpomọkụ.
Ọnụego mgbaba MFR nke PP dị na nso nke 1-40.Ihe PP nwere MFR dị ala nwere nguzogide mmetụta ka mma mana obere ductility.Maka otu ihe MFR ahụ, ike nke ụdị co-polymer dị elu karịa nke ụdị homo-polymer.N'ihi crystallization, shrinkage nke PP dị nnọọ elu, n'ozuzu 1.8-2.5%.
