Ukuzinza kokubumba komjovo wamapulasitiki asobala - i-PMMA, i-PC, i-PET

Umjovo Ukubumba Ukuzinza Kwepulasitiki Esobala - PMMA, PC, PET

Isikhathi sokufunda esilinganiselwe:3 imizuzu, 37 imizuzwana

Amapulasitiki asobala kakhulu asetshenziswa kakhulu emakethe namuhla i-polymethyl methacrylate (evame ukubizwa ngokuthi i-acrylic noma i-plexiglass, i-PMMA), i-polycarbonate (PC), i-polyethylene terephthalate (PET), inayiloni esobala, i-AS (acrylic-styrene copolymer), i-polysulfone (PSF) njalo njalo.Amapulasitiki amathathu asetshenziswa kakhulu yi-PMMA, PC kanye ne-PET.Ngenxa yezinkinga zesikhala, okulandelayo yingxoxo yezakhiwo kanye nenqubo yokubumba umjovo yala mapulasitiki amathathu.Ungakwazi futhixhumana nonjiniyela bethungokuqondile ngezinsizakalo zokubonisana zamahhala.

1, PMMA

I-PMMA Plastic Raw Material
I-PMMA ine-viscosity ephezulu kanye nokugeleza okungahambi kahle, ngakho-ke kufanele ijovwe ekushiseni okuphezulu kwempahla kanye nengcindezi ephezulu yomjovo, lapho izinga lokushisa lomjovo linethonya elikhulu kunengcindezi yomjovo, futhi uma iphakeme ingcindezi yomjovo, kuba ngcono ukuncipha komkhiqizo.
Ibanga lokushisa lomjovo libanzi, izinga lokushisa elincibilikayo lingu-160 ℃, kuyilapho izinga lokushisa lokubola lifinyelela ku-270 ℃, ngakho uhla lokulungiswa kwezinga lokushisa lulubanzi futhi ukucutshungulwa kungcono.Ngakho-ke, ukuthuthukisa uketshezi, izinga lokushisa lomjovo libalulekile.Umthelela ongemuhle, ukuqina, ukunwaya kalula, ukuqhekeka kalula kanye nezinye izinkinga, kufanele kwandiswe ngokwandisa izinga lokushisa lesikhunta, kuthuthukiswe inqubo ye-condensation, ukuze kunqobe lezi zinkinga.

2, pc

Ishidi le-PC

I-PC ine-viscosity ephezulu, izinga lokushisa eliphakeme lokuncibilika, ukungabi namandla kwezimali, ngakho-ke kufanele kube umjovo wokushisa ophakeme (phakathi kuka-270-320 ℃), uhla oluncane kakhulu lokulungiswa kwezinga lokushisa, inqubo ayilungile njenge-PMMA, ukucubungula kunzima kakhulu PMMA.Ingcindezi yomjovo ku-liquidity yomthelela incane, kodwa ngenxa ye-viscosity, kusadingeka kube ingcindezi enkulu yomjovo, ehambisanayo ukuze kuvinjwe ukucindezeleka kwangaphakathi okukhiqizwa Ukuvimbela ukucindezeleka kwangaphakathi, isikhathi sokugcina ingcindezi kufanele ibe kafushane ngangokunokwenzeka.

3, PET

Ibhodlela le-PET

Izinga lokushisa lokwakha i-PET liphezulu, futhi uhla lokulungiswa kwezinga lokushisa lincane (260-300℃), ngakho-ke ukukhiqizwa kubi, kodwa ngemva kokuncibilika, uketshezi luhle.Amandla emishini nokusebenza akuphakeme ngemva kokujova, futhi kufanele kuthuthukiswe ngenqubo yokwelula nokulungiswa ukuze kuthuthukiswe ukusebenza.
Izinga lokushisa lesikhunta lidinga ukulawulwa ngokunembile ukuze kuvikelwe i-warpage.Isici esibalulekile ku-deformation, yingakho isincomo sesikhunta somgijimi oshisayo.Izinga lokushisa lesikhunta lidinga ukuba phezulu ngaphandle kwalokho lizodala ukucwebezela kahle kwendawo kanye nobunzima ekubumbeni.

Amaphutha kanye nezixazululo zezingxenye zepulasitiki ezibonakalayo

Amaphutha cishe alandelayo:

Izinhlamvu zesiliva ngokugcwaliswa kwesikhunta kanye nenqubo ye-condensation, ithonya le-anisotropic yokucindezeleka kwangaphakathi, isiqondiso esiqondile sokucindezeleka, ukuze i-resin igeleze ku-orientation, kanye ne-non-flow orientation ukukhiqiza inkomba ye-refractive ehlukile kanye nokuzalwa kwe-flash filament. , lapho ikhula, ingase yenze umkhiqizo ubonakale uyimifantu.Ngaphezu kwenqubo yokubumba umjovo nokunakwa kwesikhunta, imikhiqizo engcono kakhulu yokwelashwa kwe-annealing.Isibonelo, impahla ye-PC ingashiswa ibe ngu-160℃ noma ngaphezulu imizuzu engu-3-5, bese ipholiswa ngokwemvelo.

Amabhamuza omoyangenxa ye-resin engaphakathi kwamanzi kanye nenye igesi ayikwazi ukukhishwa, (enqubweni ye-mold condensation) noma ngenxa yokungagcwali okwanele, ukujiya kwamanzi kanye nokufiphala okusheshayo kanye nokwakhiwa kwama-bubbles e-vacuum.

Isicwebezelisi esingesihlengenxa yokuqina kwesikhunta, ngakolunye uhlangothi ukujiya kusenesikhathi ukuze inhlaka ingakwazi ukukopisha isimo sesikhunta, konke lokhu kwenza ubuso bayo bukhiqize ukungalingani okuncane, futhi umkhiqizo ulahlekelwe ukucwebezela kwawo.

I-Shock rippleibhekisela ekwakhekeni kwe-ripple elicinene elisuka esangweni eliqondile njengesikhungo, isizathu siwukuthi i-viscosity yokuncibilika inkulu kakhulu, izinto ezingaphambili zifingqiwe emgodini, bese izinto zigqekeza kule ndawo yokufingqa, futhi ubuso be-shock ripple.

Inkungu emhlopheikakhulukazi ngenxa yothuli oluwela ezintweni ezingavuthiwe emoyeni noma umswakama wempahla eluhlaza mkhulu kakhulu futhi ubangelwa.

Intuthu emhlophe namabala amnyamangokuyinhloko kubangelwa ukubola noma ukuwohloka kwe-resin yomgqomo ngenxa yokushisa kwendawo yepulasitiki emgqonyeni.

Ukubumba komjovo kusetshenziswa kabanzi ezimbonini ezahlukahlukene futhi kungafinyelela ukukhiqizwa kwezingxenye ezingenamthungo, ukunemba kwezingxenye ngesikhathi esifushane.I-PorLean Tech inikezela ngezinsizakalo zokubumba umjovo zenqwaba yezinto, kufaka phakathi amapulasitiki nama-elastomer.Kalula njelayisha imodeli yakhofuthi uthole ukucaphuna kwamahhala okusheshayo nezeluleko kumasevisi ahlobene.