Mochini oa Granulator: Lelapa la nylon ka polasetiki ea boenjiniere, na ua ba tseba kaofela?

Mohala oa ho pelletisa polasetiki oa nylon:

Polyamide(Nylon) e kenyelletsa nylon ea aliphatic le nylon e nkhang hamonate (nylon e nkhang hamonate e na le nylon e nkhang hamonate hanyane le nylon e nkhang hamonate ka botlalo).

Ho na le mefuta e mengata ea nylon ea aliphatic, 'me e na le bokhoni bo boholo le ts'ebeliso e pharaletseng. E rehiloe lebitso ka palo ea lik'habone tsa monomer ka 'ngoe, joalo ka PA66, PA12 jj.

Mefuta e mengata ea nylon e nkhang hamonate ke nylon e mocheso o phahameng, tlhoko ha e ngata hakaalo. Empa ts'ebetso ea eona e ntle e bakile libaka tse ngata tsa ts'ebeliso, joalo ka PA9T, PA6T.

Karolo ea I: Naelone ea Aliphatic

Tlhophiso ea nylon ea aliphatic

1. Ho ea ka palo ea lik'habone tsa diamine le dicarboxylic acid, nylon e entsoeng ka li-monomer tse peli: PA46, PA66, PA610, PA612, PA1010, jj.;

2、E reheletsoe ka palo ea lik'habone tsa monomer: PA6, PA11, PA12, jj.

Matlo

Nylon e na le melemo e mengata: ho tiea hantle, ho hanyetsa ho tsofala, ho hanyetsa lik'hemik'hale, ho tiea ha 'mala, ho hanyetsa ho khohlela le ho hanyetsa oli hantle, ho ba le litšobotsi tse ntle tsa ho chesoa ke letsatsi, ho hanyetsa khanya ea letsatsi hamolemo le ho se chefo, kahoo e na le ts'ebeliso e pharaletseng. E na le khanyetso e phahameng ea tšusumetso (e phahameng ho feta ABS, POM), ho monya mongobo ka potlako, ho tenyetseha ho hoholo, le ho hlaphoheloa ha elasticity, botsitso bo fokolang ba litekanyo.

Hangata re sebelisa PA66, hobane e na le sebopeho se matla har'a mefuta eohle ea nylon ea nylon, 'me PA6 e na le thepa e ntle ka ho fetisisa ea ho e sebetsana.

Mochini oa ho ntša li-pellets tsa polasetiki: Litšobotsi tsa ts'ebetso

Boitšoaro ba rheological

Mefuta e mengata ea nylon ke resin ea kristale. Ha mocheso o feta ntlha ea ho qhibiliha, ka lebaka la ho qhibiliha ha eona ho honyenyane le ho phalla hantle, re hloka ho thibela bohale bo phoroselang. Ntle le moo, ka lebelo le potlakileng la ho qhibiliha ha ho qhibiliha, re lokela ho thibela thepa ho thibela li-nozzle, semathi, heke le tse ling tse sa lekaneng tsa sehlahisoa.

Lintlha tsa ho phalla ha hlobo ke 0.03, 'me ho qhibiliha ha qhibilihisa ho na le kutloelo-bohloko haholo ho liphetoho tsa mocheso le ho beola, ho na le kutloelo-bohloko haholoanyane ho mocheso. Kahoo re lokela ho laola mocheso oa barrel ho fokotsa ho qhibiliha ha qhibilihisa.

E monya haholo ebile e omisa

Nylon e monya haholo. Thepa ea nylon e kolobisitsoeng ts'ebetsong ea ho bopa, e bontša phokotso e matla ea viscosity le bubble ea moea e etsang hore lihlahisoa li hlahe holim'a terata ea silevera. Kaofela ha tsona li bakile liphello tsa hore matla a mechini a sehlahisoa a fokotsehe. Kahoo re hloka ho omisa thepa pele re etsa lihlahisoa.

Crystallinity

Ntle le nylon e bonaletsang, tse ling kaofela ke polymer e batlang e le kristale e nang le kristale e phahameng, matla a ho tsikinyeha, ho hanyetsa ho kgohlahala, ho thatafala, ho tlotsa le thepa e meng e ntlafetseng ya nylon. Le hoja coefficient ya katoloso ya mocheso le ho monya metsi e ne e tla fokotseha, ha e ratehe bakeng sa hore ponaletso mme khanyetso ya tshusumetso ha e ratehe.

Mocheso oa hlobo o na le tšusumetso e kholo ho kristale. Mocheso o phahameng oa hlobo o na le kristale e phahameng, mocheso o tlase o na le kristale e tlase.

Systolicity

Joalo ka polasetiki tse ling tsa kristale, resin ea nylon e na le bothata bo boholo ba ho fokotseha. Hangata, pakeng tsa ho fokotseha ha nylon le kristale ho na le kamano e haufi, kahoo ha kristale ea sehlahisoa e le kholoanyane, ho fokotseha ho tla hola. Haeba re fokotsa mocheso oa hlobo / re eketsa khatello ea ente / re fokotsa mocheso oa thepa, ho fokotseha ho tla ba honyenyane. Empa khatello ea ka hare ea sehlahisoa e tla eketseha e le hore sehlahisoa se be bonolo ho se fetola.

Mohlala, mefuta e fapaneng ya ho fokotseha ha fiber e sa matlafatswang ya PA6 le PA66 e seng ya khalase ke 1.5-2%, mme kamora ho eketswa ha fiber ya khalase, e ka fokotseha ho fihla ho 0.3%-0.8%.

Karolo ea II: Nailone e nkhang hamonate

Jwalo ka ha re boletse sehloohong sena, nylon e nkhang hamonate e ka arolwa ka nylon e nkhang hamonate hanyane le nylon e nkhang hamonate ka ho felletseng.

Li-nylon tse nkhang hamonate: Mohlala, poly-p-phenylene terephthalamide (PPTA) le poly-m-toluoyl-m-phenylene terephthalamide (PMIA). Li na le thepa e ntle ea mechini, ho thibela ho ruruha, botsitso ba lik'hemik'hale le thepa e ntle ea mocheso ka lebaka la lihlopha tsa monko o monate liketane tsa limolek'hule.

Matsatsing ana, nylon e nkhang hamonate e sebelisoa haholo indastering ea motlakase le ea elektroniki lifofaneng, indastering ea matla a athomo le indastering ea matla a athomo jj. Leha ho le joalo, ntlha e phahameng haholo ea ho qhibiliha ha nylon e nkhang hamonate e etsa hore ho se khonehe ho qhibilihisa extrusion le ente ea ho enta, 'me e ka etsoa le ho sebetsoa ka litsela tse ikhethang feela. E le hore e lekanyetse ts'ebeliso ea eona polasetiking ea boenjiniere ea letsatsi le letsatsi 'me e etsa hore ho be thata haholo ho e sebelisa hape le ho e sebelisa hape.

Nylon e nkhang hamonate: E na le lihlopha tsa aryl le methylene ka har'a ketane ea limolek'hule, e leng se etsang hore e be le thepa ea li-polyamides tsa aliphatic le nylon e nkhang hamonate feela. Ka lebaka la thepa e ntle ea mechini le ea mocheso, extrusion e tloaelehileng ea ho qhibiliha le ho enta ka ente, e loketse ho sebelisoa haholo masimong a ho hanyetsa mocheso o phahameng.

Ka ntshetsopele e potlakileng ya sebaka sa dikoloi le indasteri ya elektroniki, le tlhoko ya indasteri ya tshireletso ya tikoloho dilemong tsa morao tjena, re eketsehile tlhoko le ntshetsopele ya tshebediso e tswetseng pele. Nylon e nkhang hamonate e kenyeletsa PA9T, PA6T, PA10T le tse ding, mme jwale ha re ba tsebeng haholwanyane.

PA6T-nayiloni e hanelang mocheso o phahameng

PA6T ke sampole e tloaelehileng e emelang nylon, e kopantsoeng ke hexamethylene diamine le terephthalic acid. Sebaka sa ho qhibiliha sa PA6T e hloekileng ke 370°C. Tlas'a mocheso ona, nylon e fetohile 'me e ke ke ea fetoloa hore e be thermoplasticized. Kahoo PA6T e 'marakeng ke copolymer kapa thepa e kopantsoeng e entsoeng copolymerized le li-monomers tse ling.

PA6T e eketsa palo e kholo ea masale a benzene motheong oa liketane tsa aliphatic. Ha e bapisoa le PA6 le PA66 tsa setso, PA6T e na le Tg e phahameng, e monya metsi hanyane, e na le botsitso ba thepa le ho hanyetsa mocheso hantle.

PA6T e hloka ho hlahisa li-monomer tse ling bakeng sa copolymerization ho fokotsa mocheso oa ts'ebetso, e le hore likarolelano tse fapaneng tsa li-monomer e be senotlolo sa phetoho ea PA6T. Re ka re phetoho ea ho hanyetsa mocheso o phahameng oa PA6T e na le bokamoso bo khanyang.

Extruder ea profil ea polasetiki-tshebediso ya sehlahiswa:

Ka lebaka la ho hanyetsa ha eona ho tjheseletsa hantle, ho monya metsi hanyane, ho phalla hantle, jj., e sebediswa haholo dikarolong tsa dikoloi, dikarolong tsa mechini le dikarolong tsa motlakase/elektroniki tse kang difouno tsa cellular, didrone, jj.

PA9T-nayiloni e hanelang mocheso o phahameng

PA9T e ntshetswe pele ke Kuraray Corporation ya Japane. E hlahiswa ka ho kopana ha nonanediamine le terephthalic acid. Lebitso ke Genestar.

Leha e le nylon e nkhang hamonate hanyane, PA9T ha e hloke ho fetoloa ka copolymerization ho theola mocheso oa ho qhibiliha PA6T, mocheso o hloekileng oa ho qhibiliha oa PA9T ke 306 ℃. Mocheso oa phetoho ea khalase e phahameng ea PA9T (125 ℃) le kristale e phahameng li e fa matla a matle libakeng tse mocheso o phahameng.

Tshebetso e felletseng ya PA9T e betere ho feta nylon ya setso e hanelang mocheso, mme ka katoloso e tswelang pele ya sekala sa tlhahiso, ditjeo di tla ba haufi le PA e tlwaelehileng, kahoo PA9T e na le bokgoni bo boholo ba ntshetsopele.

e sebetsa joang:

Sehlahisoa sena se sebelisoa haholo indastering ea motlakase le ea elektroniki, indastering ea likoloi le indastering ea faeba.

PA10T-nayiloni e hanelang mocheso o phahameng

PA10T e entsoe ka terephthalic acid le decanediamine monomers mme e polymerised ka condensation. E na le khanyetso e ntle ea mocheso, ntlha ea ho qhibiliha ea 316℃, khanyetso e ntle ea k'hemik'hale ea ho bola, botsitso bo botle ba thepa. Ka lentsoe le le leng, PA10T e na le ts'ebetso e ntle ka kakaretso.

Ha ho bapisoa le li-nylon tse ling tse nang le mocheso o phahameng oa ketane e khuts'oane: PA46, PA4T, PA6T, PA6I, jj., PA10T e na le ketane e telele e tenyetsehang ea diamine. Seo se etsa hore macromolecule e be le ho tenyetseha ho itseng ka sekhahla se phahameng sa kristale le kristale. E loketse ho bopa ka potlako le ho etsa likarolo tse nyane tsa elektroniki, joalo ka li-bracket tsa ponts'o ea LED, lihokelo, jj.

Hape ka lebaka la thepa e ntle haholo - ho tiea le ho hanyetsa ho bola ho tsoa sebopehong sa lesale la benzene ka har'a ketane e kholo ea molek'hule ea eona, li-granule tse fetotsoeng tsa PA10T li ka boela tsa sebelisoa ho li-reagent tse ling tsa lik'hemik'hale, kapa libaka tse hanelang mocheso, joalo ka kalafo ea metsi, nano-injection molding NMT, periphery ea enjene, jj.

Pelletizer ea polasetiki– tshebediso ya sehlahiswa:

Bracket ea ponts'o ea LED, sehokelo, kalafo ea metsi, NMT ea nano-injection, moeli oa enjene, jj.

PA4T-nayiloni e hanelang mocheso o phahameng

PA4T e hlahisitsoeng ke DSM, e nang le tharollo e le 'ngoe feela ea indasteri lefatšeng bakeng sa butylenediamine. Ke nylon ea pele ea maiketsetso e nang le mocheso o phahameng ho tloha lekholong la bo21 la lilemo. Joalo ka PA6T, e na le mocheso o phahameng oa ho qhibiliha (430°C) 'me hangata e kopantsoe le nylon tse ling, tse kang nylon 66 kapa nylon 6.

PA4T e na le botsitso bo botle ba sebaka, ho lumellana ha solder ntle le loto, ntlha e phahameng ea ho qhibiliha, ho tiea ho hoholo le matla a mechini mochesong o phahameng, 'me e bontša ho monya metsi ho tlase haholo ho feta lihlahisoa tsa pele tsa PA46 tsa DSM, esita le PA9T.

dikopo:

Hangata PA4T e sebelisoa indastering ea motlakase le ea elektroniki le ea likoloi. Lefapheng la motlakase le ea elektroniki, PA4T e ka sebelisoa ho hlahisa likarolo tsa elektroniki tse nang le boholo bo bonyenyane, boima bo bobebe le bophelo bo bolelele ba ts'ebeletso, joalo ka liboto tsa potoloho, lihokelo tsa karete ea memori, lihokelo tsa module ea memori, li-socket tsa CPU, setering ea hona joale, li-spool tse hanelang mocheso o phahameng le lihlahisoa tse ling bakeng sa li-smartphone, li-PC tsa matlapa, lik'homphieutha tsa PC, lisebelisoa tse aparoang le masimo a mang. Indastering ea likoloi, PA4T e ka sebelisoa ho hlahisa likarolo tsa likoloi tse hanelang mocheso o phahameng joalo ka sistimi ea motlakase, sistimi ea mafura, sistimi ea ho pholisa le hood. Ho feta moo, PA4T e boetse e hlokahala sebakeng sa lifofane.

PA5T-nayiloni e hanelang mocheso o phahameng

Mocheso oa ho qhibiliha ha PA5T o tlase ho feta PA6T. Lebaka le ka sehloohong le neng le fokotsa nts'etsopele ea eona pele ke hore tsoelo-pele ea indasteri ea glutamine e ntse e le mohatong oa lipatlisiso, empa karolong ea bobeli ea 2018 ho na le lik'hamphani tsa lehae tse atlehileng ho kenya tlhahiso ea lithane tse 50,000 tsa glutamine e thehiloeng linthong tse phelang. Seo se bontša hore tsoelo-pele ea indasteri ea PA5T e haufi.

PA12T-nayiloni e hanelang mocheso o phahameng

PA12T ke mofuta oa sehlahisoa se entsoeng ka homopolymerization ea dodeca-carbon diamine le terephthalic acid.