Kuongorora Kwakakwana kwePellet yeTPUKuoma: Maparamita, Mashandisirwo uye Machengetedzo Ekushandisa
TPU (Thermoplastic Polyurethane), sechinhu chinoshanda zvakanyanya che elastomer, kuomarara kwemapellets acho chinhu chikuru chinosarudza mashandiro echinhu chacho uye mamiriro ekushandiswa kwacho. Hunhu hwekuomarara kwemapellets eTPU hwakakura zvakanyanya, kazhinji hunotangira pa 60A yakapfava zvakanyanya kusvika pa 70D yakaoma zvakanyanya, uye mhando dzakasiyana dzekuomarara dzinoenderana nehunhu hwakasiyana zvachose.Kuomarara kwacho kwakakwira, kusimba kwesimba rechinhu chacho uye kuramba kuchichinja-chinja kunoita kuti chirambe chakasimba, asi kuchinjika uye kusimba kwacho zvichaderera zvinoenderana.; pane kudaro, TPU ine kuoma kwakaderera inonyanya kutarisisa pakupfava uye kupora kwakasimba.
Panyaya yekuyera kuomarara, madurometer eShore anowanzo shandiswa muindasitiri kuyedza. Pakati pawo, madurometer eShore A akakodzera kuomarara kwepakati nepasi kwe60A-95A, nepo madurometer eShore D achinyanya kushandiswa kune TPU ine kuomarara kwakanyanya pamusoro pe95A. Tevedzerai zvakanyanya maitiro akajairwa pakuyera: kutanga, isai maTPU pellets muzvidimbu zvekuedza zvakatsetseka zvine ukobvu husingasviki 6mm, muchiva nechokwadi chekuti pamusoro hapana zvikanganiso zvakaita semabubbles nemavanga; wobva warega zvidimbu zvekuedza zvimire munzvimbo ine tembiricha ye23℃±2℃ uye hunyoro hwe50%±5% kwemaawa makumi maviri nemana. Mushure mekunge zvidimbu zvekuedza zvagadzikana, dzvanya indenter yedurometer yakatwasuka pamusoro pechinhu chekuedza, chichengete kwemasekonzi matatu wobva waverenga kukosha kwacho. Paboka rega rega remasampuro, yera kanenge mapoinzi mashanu uye tora avhareji yekuderedza zvikanganiso.
Yantai Linghua New Material CO., LTD.ine mutsetse wakakwana wechigadzirwa unobatanidza zvinodiwa nekuoma kwakasiyana. Mapellet eTPU ekuoma kwakasiyana ane migove yakajeka yemabasa munzvimbo dzekushandisa:
- Pasi pe60A (yakapfava zvakanyanya): Nekuda kwekubata kwavo kwakanaka uye kuchinjika, vanowanzoshandiswa muzvigadzirwa zvine zvinodiwa zvakanyanya zvekupfava zvakaita sematoyi evana, mabhora ekubata ekubvisa kumanikidzwa, uye machira emukati mesofa;
- 60A-70A (yakapfava): Kuenzanisa kuchinjika uye kuramba kupfeka, chinhu chakanakira kutsika kweshangu dzemitambo, mhete dzekuvhara dzisingapindi mvura, machubhu ekuisa mvura nezvimwe zvigadzirwa;
- 70A-80A (yakapfava pakati nepakati): Nekushanda kwakaringana kwakakwana, inoshandiswa zvakanyanya mumamiriro ezvinhu akadai semachira etambo, mavharo evhiri remotokari, uye matourniquets ekurapa;
- 80A-95A (yakaoma pakati nepakati kusvika yakaoma): Kuenzanisa kuomarara uye kuomarara, yakakodzera zvikamu zvinoda simba rekutsigira rakati semapurinda anotenderera, mabhatani emutambo, uye mabhokisi efoni;
- Pamusoro pe95A (yakaoma zvakanyanya): Nesimba rayo guru uye rinodzivirira kukuvadzwa, yave chinhu chinodiwa pakushandisa magiya eindasitiri, nhoo dzemakanika, uye ma "shock pads" emidziyo inorema.
Paunenge uchishandisaTPU pellets,pfungwa dzinotevera dzinofanira kucherechedzwa:
- Kuenderana kwemakemikari: TPU inonzwa zvinonyungudutsa (zvakadai sedoro, acetone) uye maasidhi akasimba uye alkali. Kusangana nazvo kunogona kukonzera kuzvimba kana kutsemuka, saka zvinofanira kudzivirirwa munzvimbo dzakadaro;
- Kudzora tembiricha: Tembiricha yekushandisa kwenguva refu haifanirwe kudarika 80℃. Tembiricha yepamusoro inokurumidza kukwegura kwechinhu chacho. Kana chikashandiswa mumamiriro ekupisa kwakanyanya, zvinowedzerwa zvinodzivirira kupisa zvinofanira kushandiswa;
- Mamiriro ekuchengetedza: Chinhu chacho chine hunyoro hwakanyanya uye chinofanira kuchengetwa munzvimbo yakavharwa, yakaoma uye ine mhepo ine hunyoro hunodzorwa pa40%-60%. Chisati chashandiswa, chinofanira kuomeswa muovheni ine 80℃ kwemaawa 4-6 kudzivirira mabubbles panguva yekugadzirisa;
- Kugadzirisa kugadziriswa: TPU yekuoma kwakasiyana-siyana inofanira kuenderana nematanho chaiwo ekuita. Semuenzaniso, TPU yakaoma zvakanyanya inoda kuwedzera tembiricha yebharero kusvika 210-230℃ panguva yekuumbwa kwejekiseni, nepo TPU yakapfava ichida kuderedza kumanikidzwa kudzivirira kupenya.
Nguva yekutumira: Nyamavhuvhu-06-2025