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Ihe niile ịchọrọ ịma gbasara polypropylene (PP)

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Note: Ọ bụ ezie na PP nwere ọkara crystalline, ọ nwere ezigbo mmiri mmiri n'ihi viscosity gbazee ya, ya mere ọ dị mfe ịkpụ.

Gịnị bụ polypropylene (PP) na gịnị bụ ojiji ya?
Polypropylene (PP) bụ ihe mgbakwunye thermoplastic polymer sitere na ngwakọta nke monomers propylene. O nwere ngwa dị iche iche, gụnyere nkwakọ ngwaahịa ngwaahịa, akụkụ plastik maka ụlọ ọrụ ụgbọ ala, na textiles. Philip Oil Company ọkà mmụta sayensị Paul Hogan na Robert Banks mbụ polypropylene na 1951, na mgbe e mesịrị Italian na German ọkà mmụta sayensị Natta na Rehn nwekwara mere polypropylene. Natta zuru oke ma mepụta ngwaahịa polypropylene mbụ na Spain na 1954, yana ike mkpuchi ya kpaliri mmasị dị ukwuu. Ka ọ na-erule 1957, ewu ewu polypropylene arịala elu, ọrụ mmepụta azụmahịa buru ibu amalitela na Europe dum. Taa, ọ ghọọla otu n'ime plastik ndị a na-ejikarị eme ihe n'ụwa.


Igbe ọgwụ nke PP nwere mkpuchi mkpuchi

Dika akuko si kwuo, ihe ndi mmadu choro maka ihe PP bu ihe dika 45 nde ton kwa afo, ma atulere na ihe a choro ga-abawanye rue ihe ruru nde 62 site na njedebe nke 2020. Ihe kachasị mkpa nke PP bụ ụlọ ọrụ nkwakọ ngwaahịa, nke ihe gbasara 30% nke mkpokọta oriri. Nke abụọ bụ ọkụ eletriki na akụrụngwa, nke na-erepịa ihe dị ka 26%. Ngwa ụlọ na ụlọ ọrụ ụgbọala na-eri 10% ọ bụla. Industrylọ ọrụ na-ewu ihe na-erepịaghị 5%.

PP nwere ihu ọma dị larịị ma nwee ike dochie ụfọdụ ngwaahịa plastik ndị ọzọ, dị ka ngwa na akụrụngwa e ji POM rụọ. Ebe dị larịị na-emekwa ka o siere PP ike ịgbaso akụkụ ndị ọzọ, ya bụ, PP enweghị ike jikọtara ya na gluu ụlọ ọrụ, na mgbe ụfọdụ a ga-ejikọ site na ịgbado ọkụ N'iji ya tụnyere plastik ndị ọzọ, PP nwekwara njirimara nke njupụta dị ala, nke nwere ike belata ibu maka ndị ọrụ. PP nwere nguzogide magburu onwe ya maka ihe ndị na-agbaze mmanụ dị ka griiz na ime ụlọ. Ma, ihe dị mfe oxidize na elu okpomọkụ.

Otu n'ime uru ndị dị na PP bụ arụmọrụ nhazi ya kachasị mma, enwere ike ịmalite site na ịkpụzi ọgwụ ma ọ bụ nhazi CNC. Dịka ọmụmaatụ, na igbe ọgwụ PP, mkpuchi ahụ na-ejikọta ya na karama ahụ site na mgbabere ndụ. Enwere ike iji igbe ogwu ọgwụ ma ọ bụ CNC rụọ ọrụ ngwa ngwa. Mkpụrụ ndụ dị ndụ nke jikọtara mkpuchi ahụ bụ mpempe akwụkwọ plastik dị ezigbo mkpa nke nwere ike ịgbagọ ugboro ugboro (na-agagharị na oke dị nso na ogo 360) na-enweghị imebi. Ọ bụ ezie na mgbatị dị ndụ nke PP enweghị ike iburu ibu ahụ, ọ dabara adaba maka okpu karama nke ihe dị mkpa kwa ụbọchị.

Uru ọzọ nke PP bụ na enwere ike ịmekọrịta ya na polymer ndị ọzọ (dị ka PE) iji mepụta plastik mejupụtara. The copolymer budata agbanwe Njirimara nke ihe, na ike nweta ihe siri ike injinịa ngwa tụnyere na ọcha PP.

Ngwa ọzọ na-enweghị atụ bụ na PP nwere ike ịrụ ọrụ dị ka ihe plastik na ngwa fiber.

Njirimara ndị a dị n'elu pụtara na enwere ike iji PP n'ọtụtụ ngwa: efere, trays, iko, akpa aka, opaque plastic containers na ọtụtụ ụmụaka.

Gịnị bụ njirimara nke PP?
Njirimara kachasị mkpa nke PP bụ ndị a:

Chemical eguzogide: diluted alkali na acid adịghị emeghachi omume na eyi, nke na-eme ya ihe ezigbo akpa maka ndị dị otú ahụ liquids (dị ka detergents, enyemaka mbụ na ngwaahịa, wdg).
Mgbanwe na ike: PP nwere ekwenti n'ime ụfọdụ ngagharị, ọ ga-enwe nrụrụ plastik na-enweghị mgbape na mbido mbido nke nrụrụ, n'ihi ya, a na-ahụkarị ya dị ka ihe "siri ike". Toughness bụ okwu injinịa akọwapụtara dị ka ike nke ihe iji deform (nrụrụ rọba karịa nrụrụ na-agbanwe agbanwe) na-agbasaghị.
Ike ọgwụgwụ: PP na-ejigide ọdịdị ya mgbe ọtụtụ gbagọrọ agbagọ. Akụkụ a bara uru karịsịa maka ịme ihe obibi.
Mgbapu: Ihe PP nwere nguzogide di elu ma obu ihe nkpuchi.
Transmittance: Ọ nwere ike ime ka ọ bụrụ ụcha chara acha, mana a na-eme ya ka ọ bụrụ nke na-acha ocha na-acha odo odo nwere otu ụdị agba agba. Ọ bụrụ na achọrọ mgbasa dị elu, acrylic ma ọ bụ PC kwesịrị ịhọrọ.
PP bụ thermoplastic nke nwere agbaze ihe dịka 130 Celsius, wee bụrụ mmiri mmiri mgbe ọ ruru ebe agbaze. Dịka thermoplastics ndị ọzọ, enwere ike iwe ọkụ ma mee ka ọ dị mma ugboro ugboro na-enweghị oke mbibi. Ya mere, PP nwere ike recycled na mfe natara.

Kedu ụdị ụdị PP dị iche iche?
E nwere isi ihe abụọ dị iche iche: homopolymers na copolymers. A na-ekewa ndị Copolymers ọzọ na copolymers na random copolymers. Otu ọ bụla nwere ngwa pụrụ iche. A na-akpọkarị PP dị ka ihe "ígwè" nke ụlọ ọrụ plastik, n'ihi na enwere ike ịme ya site na ịgbakwunye ihe mgbakwunye na PP, ma ọ bụ rụpụta ya n'ụzọ pụrụ iche, nke mere na enwere ike gbanwee PP ma hazie ya iji nweta ngwa ngwa pụrụ iche.

Eyi maka ihe eji eme ụlọ ọrụ izugbe bụ homopolymer. Block copolymer PP na-agbakwunye na ethylene iji melite mmetụta na-eguzogide. Random copolymer eyi na-eji na-eme ka ndị ọzọ ductile na uzo ngwaahịa.

Kedu ka esi eme PP?
Dị ka plastik ndị ọzọ, ọ na-amalite site na "fractions" (ọkụ dị iche iche) nke distillation nke mmanụ ọkụ hydrocarbon guzobere ma jikọta ya na ndị ọzọ na-akpali akpali iji mepụta plastik site na mmeghachi omume polymerization ma ọ bụ mmeghachi omume polycondensation.

CNC, 3D ebi akwụkwọ na ọgwụ ịkpụzi atụmatụ
Eyi 3D ebi akwụkwọ

Agaghị eji PP mee ihe maka ibi akwụkwọ 3D n'ụdị filament.

Eyi CNC nhazi

A na-eji PP eme ihe maka nhazi CNC na mpempe akwụkwọ. Mgbe ị na-eme ihe ngosi nke obere ọnụọgụ akụkụ, anyị na-arụ ọrụ igwe CNC na ha. PP nwere obere annealing okpomọkụ, nke pụtara na ọ na-agbanwe ngwa ngwa site na okpomọkụ, ya mere ọ chọrọ ọkwa dị elu iji belata n'ụzọ ziri ezi.

Ntụtụ PP

Ọ bụ ezie na PP nwere ọkara crystalline, ọ nwere ezigbo mmiri mmiri n'ihi viscosity gbazee ya, ya mere ọ dị mfe ịkpụ. Ihe omume a na - eme ka ngwa ngwa ngwa ngwa ihe ahụ juputa ebu. Mbelata nsị nke PP bụ ihe dị ka 1-2%, mana ọ ga-adịgasị iche n'ihi ọtụtụ ihe, gụnyere ijide nrụgide, ijide oge, okpomọkụ na-agbaze, ọkpụrụkpụ mgbidi ọkpụrụkpụ, ọkụ ọkụ, na ụdị na pasent nke ihe mgbakwunye.

Ihe ndị ọzọ
Na mgbakwunye na ngwa plastik, PP dịkwa mma maka ịme eriri. Ngwaahịa ndị a gụnyere eriri, kapeeti, akwa akwa, akwa, wdg.


Kedu uru nke PP?
Eyi dị mfe ma dịtụ ọnụ ala.
Eyi nwere nnukwu ike mgbanwe.
Eyi nwere dịtụ nro dịtụ mma.
Eyi bụ ihe na-egosi mmiri ma nwee mmiri dị ala.
PP nwere ezigbo nguzogide kemịkal dị iche iche na acid dị iche iche.
Eyi nwere ezigbo ike ọgwụgwụ.
PP nwere ezigbo mmetụta dị ike.
Eyi bụ ezigbo insulator eletrik.
Kedu ihe ọghọm nke PP?
PP nwere ọnụọgụ dị elu nke mgbasawanye ọkụ, nke na-egbochi ngwa ya dị elu.
PP nwere ike ibibi site na ụzarị ultraviolet.
PP enwechaghị nguzogide solvents na chromrinated aromatic hydrocarbons.
Eyi siri ike ịgba n’elu n’ihi adịghị mma adhesion Njirimara.
Eyi dị ọkụ ọkụ.
Eyi dị mfe oxidize.
N'agbanyeghị adịghị ike ya, PP bụ ezigbo ihe. Ọ nwere njirimara agwakọta pụrụ iche nke ihe ndị ọzọ enweghị ike iji tụnyere ya, ya bụ, enwere ike ijikọ ya na ndị ọzọ polymer iji mepụta ihe ndị mejupụtara, enwere ike ịgbakwunye mgbakwunye dị iche iche, nke mere ya ezigbo nhọrọ maka ọtụtụ ọrụ.

Kedu ihe njiri mara PP?
N'okpuru ọnọdụ ọkọlọtọ, ya bụ, ọnọdụ ikuku dị 25 Celsius na ikuku 1 nke nrụgide.

Aha Teknụzụ: Polypropylene (PP)

Chemical usoro: (C3H6) n


Ntinye njirimara resin (maka imegharị ihe):


Agbaze okpomọkụ: 130 Celsius

Ahụkarị ọgwụ okpomọkụ: 32-66 ° C

Okpomọkụ ngbanwe ikuku: 100 Celsius C (n'okpuru 0.46 MPa mgbali)

Ike ọdụdọ: 32 MPa

Ike mgbanwe: 41 MPa

Ike ndọda kpọmkwem: 0.91

Mbelata mbelata: 1.5-2.0%

 
 
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