Polypropylene (PP) bụ thermoplastic kristal siri ike nke a na-eji eme ihe kwa ụbọchị.Enwere ụdị PP dị iche iche: homopolymer, copolymer, mmetụta, wdg. Nrụ ọrụ ya, anụ ahụ, na kemịkalụ na-arụ ọrụ nke ọma na ngwa sitere na ụgbọ ala na ọgwụ na nkwakọ ngwaahịa.
Kedu ihe bụ polypropylene?
A na-emepụta polypropylene site na propene (ma ọ bụ propylene) monomer.Ọ bụ resin hydrocarbon linear.Usoro kemịkalụ nke polypropylene bụ (C3H6) n.PP bụ otu n'ime rọbas dị ọnụ ala dị ugbu a, yana ọ nwere njupụta kacha ala n'etiti plastik ngwa ahịa.N'elu polymerization, PP nwere ike ịmepụta usoro atọ bụ isi dabere na ọnọdụ nke otu methyl:
Atactic (aPP).Nhazi otu methyl na-ezighi ezi (CH3).
Isotactic (iPP).Otu methyl (CH3) haziri n'otu akụkụ nke agbụ carbon
Syndiotactic (sPP).Nhazi methyl otu (CH3) ọzọ
PP bụ nke ezinụlọ polyolefin nke polymers ma bụrụ otu n'ime polymers atọ kachasị elu taa.Polypropylene nwere ngwa-ma dị ka rọba ma dị ka eriri-na ụlọ ọrụ ụgbọ ala, ngwa ụlọ ọrụ mmepụta ihe, ngwa ahịa, na ahịa arịa ụlọ.
Ụdị polypropylene dị iche iche
Homopolymers na copolymers bụ isi ụdị abụọ nke polypropylene dị na ahịa.
Propylene homopolymerbụ ọkwa ebumnuche izugbe kacha eji eme ihe.Ọ nwere naanị propylene monomer n'ụdị siri ike nke ọkara kristal.Ngwa ndị bụ isi gụnyere nkwakọ ngwaahịa, akwa akwa, ahụike, ọkpọkọ, ngwa ụgbọ ala, na ngwa eletriki.
Polypropylene copolymerA na-ekewa n'ime copolymers random na ngọngọ copolymers mepụtara site na polymerizing nke propene na ethane:
1. A na-emepụta propylene random copolymer site na polymerizing ọnụ ethene na propene.Ọ na-egosipụta nkeji ethene, na-abụkarị ihe ruru 6% site na uka, na-etinye ya na-enweghị usoro na ụdọ polypropylene.Ndị polymers ndị a na-agbanwe agbanwe na anya doro anya, na-eme ka ha dị mma maka ngwa na-achọ nghọta na maka ngwaahịa na-achọ ọdịdị mara mma.
2. Propylene block copolymer nwere ọdịnaya ethene dị elu (n'etiti 5 na 15%).Ọ nwere ngalaba monomer ahaziri n'usoro oge niile (ma ọ bụ ngọngọ).Ụkpụrụ a na-eme mgbe nile na-eme ka thermoplastic sie ike ma na-adịchaghị ike karịa nke co-polymer na-enweghị usoro.Ndị a polymers kwesịrị ekwesị maka ngwa na-achọ ike dị elu, dị ka ụlọ ọrụ ojiji.
Ụdị ọzọ nke polypropylene bụ mmetụta copolymer.Otu propylene homopolymer nwere usoro propylene random copolymer agwakọta nke nwere ọdịnaya ethylene nke 45-65% na-ezo aka na PP mmetụta copolymer.A na-ejikarị copolymer mmetụta eme ihe na nkwakọ ngwaahịa, ngwa ụlọ, ihe nkiri na ngwa ọkpọkọ, yana n'akụkụ ụgbọ ala na eletriki.
Polypropylene Homopolymer vs. Polypropylene Copolymer
Propylene homopolymernwere oke ike na oke ibu, ma sie ike ma sie ike karịa copolymer.Njirimara ndị a jikọtara ya na ezigbo nguzogide kemịkalụ na weldability na-eme ka ọ bụrụ ihe a na-ahọrọ n'ọtụtụ ụlọ na-eguzogide corrosion.
Polypropylene copolymerdị ntakịrị nro mana ọ nwere mmetụta dị mma karịa.Ọ siri ike ma dịkwa ogologo karịa propylene homopolymer.Ọ na-eche na ọ ga-enwe nguzogide mgbawa ka mma na ike ike dị ala karịa homopolymer na-efunahụ obere mbelata na akụrụngwa ndị ọzọ.
Ngwa PP Homopolymer na PP Copolymer
Ngwa ndị a fọrọ nke nta ka ọ bụrụ otu n'ihi akụrụngwa kekọrịtara ọnụ.N'ihi ya, a na-emekarị nhọrọ n'etiti ihe abụọ a na-adabere na njirisi na-abụghị nke nkà na ụzụ.
Idebe ozi gbasara njirimara nke thermoplastic na mbụ na-aba uru mgbe niile.Nke a na-enyere aka n'ịhọrọ thermoplastic ziri ezi maka ngwa.Ọ na-enye aka n'ịtụle njedebe ojiji achọrọ ga-emezu ma ọ bụ na ọ gaghị emezu.Nke a bụ ụfọdụ njirimara na uru nke polypropylene:
Ebe mgbaze nke polypropylene.Ebe mgbaze nke polypropylene na-eme na nso nso.
● Homopolymer: 160-165°C
● Copolymer: 135-159°C
Njupụta nke polypropylene.PP bụ otu n'ime polymers kachasị mfe n'etiti ngwaahịa plastik niile.Njirimara a na-eme ka ọ bụrụ nhọrọ dabara adaba maka ngwa dị fechaa/arọ--ichekwa ngwa.
● Homopolymer: 0.904-0.908 g/cm3
● Copolymer enweghị usoro: 0.904-0.908 g/cm3
● Mmetụta copolymer: 0.898-0.900 g/cm3
Polypropylene chemical iguzogide
● Nguzogide dị mma maka acids, alcohols na bases gbanyere mkpọrọgwụ ma tinye ya n'ọrụ
● Ezigbo iguzogide aldehydes, esters, hydrocarbons aliphatic, na ketones
● Iguzogide oke na aromatic na halogenated hydrocarbons na oxidizing agents
Ụkpụrụ ndị ọzọ
● PP na-ejigide akụrụngwa na ọkụ eletrik na okpomọkụ dị elu, na ọnọdụ iru mmiri, na mgbe etinyere ya na mmiri.Ọ bụ plastik na-egbochi mmiri
● PP nwere ezigbo iguzogide nrụgide gburugburu ebe obibi na mgbawa
● Ọ na-enwe mmetụta maka mwakpo ụmụ nje (bacteria, ebu, wdg.)
● Ọ na-egosipụta ezigbo nguzogide igba ogwu uzuoku
Ihe mgbakwunye polymer dị ka nkọwa, ọkụ retardants, eriri iko, mineral, ihe ndị na-eme ihe, mmanụ mmanu, pigmenti, na ọtụtụ ihe mgbakwunye ndị ọzọ nwere ike imeziwanye akụrụngwa anụ ahụ na / ma ọ bụ igwe PP.Dịka ọmụmaatụ, PP enweghị ihe mgbochi na-adịghị mma na UV, ya mere nkwụsi ike ọkụ na amines na-egbochi na-eme ka ndụ ọrụ dịkwuo elu ma e jiri ya tụnyere polypropylene na-adịghị agbanwe agbanwe.
Ọdịmma nke Polypropylene
Nguzogide na-adịghị mma maka UV, mmetụta, na ọkọ
Embrittles n'okpuru -20 Celsius
Okpomọkụ ọrụ dị ala, 90-120 Celsius
N'ịbụ nke acids oxidizing dị ukwuu wakporo, na-aza ngwa ngwa na ihe mgbaze chlorinated na aromatics.
Nkwụsi ike na-ekpo ọkụ na-aka nká na-emetụta n'ụzọ dị njọ site na kọntaktị na ọla
Mgbanwe akụkụ akụkụ mgbe emechara ya n'ihi mmetụta crystallinity
Adhesion agba na-adịghị mma
Ngwa nke polypropylene
A na-eji polypropylene eme ihe na ngwa dị iche iche n'ihi ezigbo nguzogide kemịkalụ na weldability.Ụfọdụ ojiji a na-ejikarị polypropylene gụnyere:
Ngwa nkwakọ ngwaahịa
Ngwongwo ihe mgbochi dị mma, ike dị elu, imecha elu dị mma, na ọnụ ala dị ala na-eme ka polypropylene dị mma maka ọtụtụ ngwa nkwakọ ngwaahịa.
Nkwakọ ngwaahịa na-agbanwe agbanwe.Ihe nkiri PP' ọmarịcha anya na nnyefe dị ala na-eme ka ọ dị mma maka ojiji na nkwakọ nri.Ahịa ndị ọzọ gụnyere ihe mkpuchi ihe nkiri mbelata, ihe nkiri ụlọ ọrụ eletrọnịkị, ngwa nka eserese, na taabụ diaper na mmechi.Ihe nkiri PP dị ka ihe nkiri nkedo ma ọ bụ PP (BOPP) bi-axially orientated.
Nkwakọ ngwaahịa siri ike.A na-akpụ PP iji mepụta krates, karama, na ite.A na-ejikarị arịa nwere mgbidi PP dị mkpa maka nkwakọ nri.
Ngwa ahịa.A na-eji polypropylene eme ihe n'ọtụtụ ngwaahịa ụlọ na ngwa ngwa ngwa ahịa, gụnyere akụkụ translucent, ngwa ụlọ, arịa ụlọ, ngwa ngwa, akpa, na ihe egwuregwu ụmụaka.
Ngwa akpaaka.N'ihi ọnụ ala ya dị ala, akụrụngwa akụrụngwa pụtara ìhè, yana moldability, a na-eji polypropylene eme ihe na akụkụ ụgbọ ala.Ngwa ndị bụ isi na-agụnye ikpe batrị na trays, bumpers, liner fender, mkpụbelata ime ime, ogwe ngwá ọrụ, na mkpirisi ụzọ.Akụkụ ndị ọzọ dị mkpa nke ngwa ụgbọ ala nke PP gụnyere ọnụọgụ dị ala nke mgbasawanye thermal linear na ike ndọda, nnukwu nguzogide kemịkalụ na ezigbo ihu igwe, nhazi usoro, yana nguzozi mmetụta/isi ike.
Fiber na akwa akwa.A na-eji nnukwu olu PP na mpaghara ahịa a maara dị ka eriri na akwa akwa.A na-eji eriri PP eme ihe n'ọtụtụ ngwa, gụnyere raffia / slit-film, teepu, strapping, nnukwu filament na-aga n'ihu, eriri staple, njikọ na-aga n'ihu, na filament na-aga n'ihu.Ụdọ PP na twine siri ike ma na-eguzogide mmiri, dị mma maka ngwa mmiri.
Ngwa ahụike.A na-eji polypropylene eme ihe na ngwa ahụike dị iche iche n'ihi nnukwu kemịkalụ na nguzogide nje.Ọzọkwa, ọkwa ahụike PP na-egosipụta ezigbo nguzogide mmịpụta uzuoku.
sirinji ndị a na-atụfu ihe bụ ngwa ahụike na-ahụkarị nke polypropylene.Ngwa ndị ọzọ gụnyere vial ọgwụ, ngwaọrụ nyocha, efere petri, karama intravenous, karama ihe atụ, trays nri, pans, na akpa pill.
Ngwa mmepụta ihe.A na-eji akwa polypropylene eme ihe n'ọtụtụ ebe na mpaghara mmepụta ihe iji mepụta acid na tankị kemịkalụ, mpempe akwụkwọ, ọkpọkọ, nkwakọ ụgbọ njem na-alọghachi (RTP), na ngwaahịa ndị ọzọ n'ihi njirimara ya dị ka ike tensile dị elu, iguzogide oke okpomọkụ, na nguzogide corrosion.
PP bụ 100% recyclable.Okwu batrị ụgbọ ala, ọkụ mgbama, eriri batrị, brooms, brushes, na scrapers bụ ihe atụ ole na ole nke ngwaahịa enwere ike ịme site na polypropylene emegharịrị (rPP).
Usoro imegharị ihe nke PP na-agụnye ịgbaze plastik n'efu ruo 250 Celsius C iji wepụ ihe ndị na-emerụ emerụ na-esote mwepụ nke ụmụ irighiri ihe ndị fọdụrụ n'okpuru oghere na ike siri ike na ihe fọrọ nke nta ka ọ bụrụ 140 ° C.Enwere ike ịgwakọta PP a emegharịrị na PP na-amaghị nwoke na ọnụego ruru 50%.Isi ihe ịma aka dị na imegharị PP metụtara ego a riri - ugbu a, a na-emegharị karama 1% PP, ma e jiri ya tụnyere 98% ọnụ ọgụgụ mweghachi nke karama PET & HDPE ọnụ.
A na-ewere iji PP dị mma n'ihi na ọ nweghị mmetụta ọ bụla dị ịrịba ama site na echiche ahụike na nchekwa ọrụ, n'ihe gbasara nsị kemịkal.Iji mụtakwuo maka PP lelee ntuziaka anyị, nke gụnyere ozi nhazi na ihe ndị ọzọ.
Oge nzipu: Jul-03-2023