Kedu ihe bụ PP ihe? Nyocha zuru oke nke njirimara, ngwa na uru nke ihe PP
N'ihe gbasara kemịkalụ na ihe, "ihe bụ PP" bụ ajụjụ a na-ajụkarị, PP bụ abbreviation nke Polypropylene, bụ polymer thermoplastic a na-ejikarị eme ihe. N'isiokwu a, anyị ga-enyocha n'ụzọ zuru ezu ihe onwunwe, mmepụta usoro, ngwa ngwa na uru nke PP ihe iji zaa ajụjụ nke ihe bụ PP.
1. Gịnị bụ PP? Isi echiche na Njirimara
Ihe PP, ntụgharị polypropylene, bụ thermoplastic emere site na propylene monomer site na mmeghachi omume polymerisation. Ọ nwere usoro ahịrị ahịrị, nke na-enye ya nguzozi nke siri ike na ịdị ike na akụrụngwa ya n'ihi usoro agbụ molekụla pụrụ iche. Polypropylene nwere obere njupụta nke naanị ihe dịka 0.90 g/cm³, na-eme ka ọ bụrụ otu n'ime plastik kachasị mfe, ihe onwunwe na-eme ka ọ dị mma maka ọtụtụ ngwa.
Polypropylene na-eguzogide ọgwụ nke ukwuu, na-enwekwa oke nguzogide nke ọtụtụ acid, bases, salts and organic solvents. Ebe mgbaze ya dị elu (ihe dị ka 130-170 Celsius) na-enye ihe PP ezigbo nkwụsi ike na gburugburu okpomọkụ dị elu ma na-eme ka ha ghara ịdị na-enwe nrụrụ. Ya mere, a na-eji ihe PP eme ihe n'ọtụtụ ebe n'ọnọdụ ndị chọrọ okpomọkụ na nguzogide corrosion.
2. Usoro mmepụta nke ihe PP
Mmepụta nke ihe PP na-adabere na teknụzụ na-akpali akpali na usoro polymerisation. Ụzọ mmepụta polypropylene ndị a na-emekarị gụnyere gas-phase polymerisation, polymerisation-phase mmiri mmiri na polymerisation dị n'ime. Ụzọ polymerisation dị iche iche na-emetụta ịdị arọ nke molekụla, crystallinity na ihe anụ ahụ nke ihe PP, nke na-ekpebi mpaghara ngwa ha.
Ụdị polypropylene dị iche iche, dị ka homopolymerised polypropylene (Homo-PP) na copolymerised polypropylene (Copo-PP), nwere ike nweta site n'ịgbanwe ụdị ihe na-emepụta ihe na ọnọdụ mmeghachi omume n'oge usoro mmepụta. Homopolymerised polypropylene nwere nnukwu ihe siri ike na nguzogide okpomọkụ, ebe polypropylene copolymerised na-ejikarị eme ihe kwa ụbọchị n'ihi ike mmetụta ya dị elu.
3. Ebe isi ngwa maka ihe PP
A na-eji ihe PP eme ihe n'ọtụtụ ụlọ ọrụ n'ihi njirimara anụ ahụ na nke kemịkal dị elu. Na ndụ kwa ụbọchị, a na-eji PP na-emepụta arịa ụlọ, nkwakọ nri, ọkpọkọ na ihe egwuregwu ụmụaka, wdg N'ime ụlọ ọrụ, a na-ejikarị PP eme ihe na-emepụta pipeline chemical, nfuli na valves, wdg.
Karịsịa n'ime ụlọ ọrụ nkwakọ ngwaahịa, PP aghọwo ihe kachasị amasị ya n'ihi nghọta ya dị mma na nguzogide okpomọkụ, dị ka igbe nchekwa nri nkịtị, oven microwave tableware, wdg. Ojiji nke ihe PP na mpaghara ahụike na-arịwanye elu, karịsịa sirinji ndị nwere ike iwepụ, arịa ụlọ nyocha na ngwaahịa ndị ọzọ nwere nnukwu aseptic chọrọ.
4. PP ihe onwunwe uru na atụmanya ahịa
PP ihe onwunwe na-ọtụtụ ebe mmasị tumadi n'ihi na ya ìhè arọ, okpomọkụ na-eguzogide, chemical iguzogide na ezi nhazi arụmọrụ.PP nwekwara magburu onwe eletriki mkpuchi na gburugburu ebe obibi àgwà nchebe, ike recycled iji belata gburugburu ebe obibi mmetọ.
Site n'echiche ahịa, na echiche nke mmepe na-adịgide adịgide na nchebe gburugburu ebe obibi akwụkwọ ndụ akwụkwọ ndụ, ọchịchọ ahịa maka ihe PP ga-abawanye ụba. Ntugharị nke polypropylene na njirimara ikuku carbon dị ala na-eme ka ọ dịkwuo mkpa na ngwa dị iche iche na-apụta, dị ka isi mmalite ike ọhụrụ na ihe ndị na-emetụta gburugburu ebe obibi.
5. Ọdịmma na ihe ịma aka nke ihe PP
N'agbanyeghị uru ya doro anya, PP nwere ụfọdụ adịghị ike, dị ka nguzogide mmetụta dị ala na-adịghị mma na iguzogide ọkụ UV. Na ngwa bara uru, enwere ike imezi adịghị ike ndị a site n'ịgwakọta mgbanwe, mgbakwunye nke antioxidants na ihe mgbakwunye na-eguzogide UV. Site na mmepe nke teknụzụ, nyocha na mmepe nke polypropylene dabeere na bio na copolymers dị elu na-aga n'ihu, na-emepe ohere ọhụrụ maka itinye ihe polypropylene.
Mmechi
Kedu ihe bụ PP ihe? Ọ bụ thermoplastic nke nwere ihe magburu onwe ya na ọtụtụ ngwa. Site na nyocha zuru ezu nke ihe onwunwe ya, usoro mmepụta ihe, mpaghara ngwa na atụmanya ahịa, anyị nwere ike ịhụ ọnọdụ na-enweghị atụ nke ihe PP na ụlọ ọrụ dị iche iche. Site na ọganihu nke nkà na ụzụ na mkpa nchedo gburugburu ebe obibi, ngwa ngwa ngwa nke ihe PP ga-anọgide na-amụba, na-ewetakwu mma na ihe ọhụrụ na ụlọ ọrụ na ndụ ọgbara ọhụrụ.
Anyị na-atụ anya na site na nyocha zuru ezu nke isiokwu a, ị nwere nghọta miri emi nke ihe PP bụ ihe.