Kuwedzerwa kweTPU (Thermoplastic Polyurethane)

1. Kugadzirira Zvinhu

• TPUPellets Sarudzo: SarudzaTPU pelletsnekuoma kwakakodzera (kuoma kwemahombekombe, kazhinji kubva ku50A - 90D), melt flow index (MFI), uye maitiro ekuita (eg, high abrasion resistance, elasticity, uye chemical resistance) maererano nezvinodiwa zvekupedzisira zvechigadzirwa.
• Kuomesa:TPUis hygroscopic, saka inofanira kunge yakatangira - yakaomeswa isati yabuda kuti ibvise unyoro. Hunyoro hunogona kukonzera mabhubhu, kuremara kwepamusoro, uye kuderedzwa kwemakanika zvivakwa mune zvakaburitswa zvigadzirwa. Kuomesa kunowanzoitwa pane tembiricha iri pakati pe80 - 100 ° C kwemaawa 3 - 6.

2. Extrusion Process

• Extruder Components
  • Barrel: Iyo dhiramu ye extruder inopisa munzvimbo dzakawanda kuti inyunguduse zvishoma nezvishoma TPU pellets. Iyo tembiricha mbiri yakanyatsoiswa kuti ive nechokwadi chekunyungudika pasina pamusoro - kupisa zvinhu, izvo zvinogona kutungamirira mukuora. Semuenzaniso, tembiricha yenzvimbo yekudyisa inogona kunge yakatenderedza 160 - 180 ° C, iyo compression zone yakatenderedza 180 - 200 ° C, uye metering zone yakatenderedza 200 - 220 ° C, asi izvi zvakakosha zvinogona kusiyana zvichienderana negiredhi reTPU.
  • Screw: Iyo screw inotenderera mukati medhiramu, kuendesa, kumanikidza, uye kunyungudutsaTPU pellets.Yakasiyana screw dhizaini (semuenzaniso, imwe - screw kana mapatya - screw extruders) inogona kukanganisa kusanganisa, kunyungudika kushanda, uye chiyero chekubuda kweiyo extrusion process. Twin - screw extruders kazhinji inopa zvirinani kusanganisa uye yakawanda yunifomu kunyunguduka, kunyanya kune yakaoma maumbirwo.
• Kunyunguduka uye Kusanganisa: Sezvo maTPU pellets anofamba nepakati pembiru, anonyungudutswa zvishoma nezvishoma nekusanganiswa kwekupisa kubva mubhodhoro uye shear inogadzirwa nescrew rotation. Iyo TPU yakanyungudutswa yakanyatso kusanganiswa kuti ive nechokwadi chehomogeneous kunyungudika.
• Kufa Dhizaini uye Kuumbwa: Iyo TPU yakanyungudutswa inozomanikidzwa kuburikidza nekufa, iyo inotemesa muchinjiko - chikamu chechimiro chechigadzirwa chakawedzerwa. Inofa inogona kugadzirwa kuti ibudise maumbirwo akasiyana, akadai sedenderedzwa remachubhu, rectangular yemaprofile, kana furati yemashiti nemafirimu. Mushure mekupfuura nemufa, iyo yakawedzera TPU inotonhodzwa uye yakasimbiswa, kazhinji nekupfuura nemubhavhu remvura kana kushandisa kutonhora kwemhepo.

3. Post – Kugadzira

• Calibration uye Kukura: Kune zvimwe zvigadzirwa zvakawedzerwa, calibration uye saizi mashandiro anodiwa kuti ive nechokwadi chezviyero. Izvi zvinogona kusanganisira kushandisa calibration maoko, vacuum saizi matangi, kana zvimwe zvishandiso kudzora ekunze dhayamita, ukobvu, kana mamwe mativi akakosha echigadzirwa.
• Kucheka kana Kupeta: Zvichienderana nekushandisa, iyo yakawedzera TPU chigadzirwa inogona kuchekwa kuita hurefu chaihwo (yeprofiles, machubhu, nezvimwewo) kana kukuvara pamaromburu (yemashizha nemafirimu).