Basa guru reThermoplastic Polyurethane (TPU) firimuinorara mumhando dzayo dzisingapindi mvura uye hunyoro-inopindika-inogona kuvharira mvura yemvura kuti isapinda ichibvumira mamorekuru emhute yemvura (dikita, dikita) kupfuura.
1. Zviratidziro Zvekuita uye Maitiro
- Kudzivirira Mvura (Hydrostatic Pressure Resistance):
- Chiratidzo: Inoyera kugona kwemufirimu kuramba kumanikidzwa kwemvura yekunze, kuyerwa ne kilopascals (kPa) kana mamirimita emvura column (mmH₂O). Kukosha kwepamusoro kunoratidza kushanda kwakasimba kwemvura. Semuenzaniso, zvipfeko zvekunze zvenguva dzose zvinogona kuda ≥13 kPa, nepo michina yegiredhi yehunyanzvi ingada ≥50 kPa.
- Test Standard: Kazhinji kuedzwa uchishandisa ISO 811 kana ASTM D751 (Burst Strength Method). Izvi zvinosanganisira kuramba uchiwedzera kudzvinyirirwa kwemvura kune rumwe rutivi rwefirimu kusvikira madonhwe emvura aonekwa kune rumwe rutivi, achinyora kukosha kwekumanikidzwa panguva iyoyo.
- Hunyoro Permeability (Vapor Transmission):
- Indicator: Inoyera kuwanda kwemhute yemvura inopfuura nepachikamu chemufirimu panguva imwe neimwe, inoratidzirwa mumagiramu paskweya mita pamaawa makumi maviri nemana (g/m²/24h). Kukosha kwepamusoro kunoratidza kufema kuri nani uye kubuda dikita. Kazhinji, kukosha kunodarika 5000 g/m²/24h kunoonekwa kunge kunofema zvakanyanya.
- Test Standard: Nzira mbiri huru dziripo:
- Yakarurama Cup Method (Desiccant Method): semuenzaniso, ASTM E96 BW. Desiccant inoiswa mukapu, yakavharwa nefirimu, uye huwandu hwemhute yemvura inobatwa pasi pemamiriro ekushisa chaiwo uye hunyoro hunoyerwa. Migumisiro iri pedyo nemamiriro chaiwo ekupfeka.
- Inverted Cup Method (Mvura Method): semuenzaniso, ISO 15496. Mvura inoiswa mukapu, iyo inopindurwa uye yakavharwa nefirimu, uye huwandu hwemvura inoputika kuburikidza nefirimu inopimwa. Iyi nzira inokurumidza uye inowanzoshandiswa pakutonga kwehutano.
2. Kushanda Nheyo
Iyo isingapindi mvura uye mwando-inopindika zvinhu zveTPU firimuhaawanikwe kuburikidza nemuviri pores asi anovimba nemolecular-level chiito cheiyo hydrophilic cheni zvikamu:
- Isingapindi mvura: Iyo firimu pachayo ine dense uye isina pore-isina; mvura yemvura haigone kupfuura nekuda kwekushushikana kwayo kwepamusoro uye chimiro chemufirimu.
- Hunyoro Hunogoneka: Iyo polymer ine hydrophilic mapoka (eg, -NHCOO-). Aya mapoka "anotora" mamorekuru emhute emvura anobuda kubva paganda mukati. Zvadaro, kuburikidza ne "segment movement" yemaketani epolymer, mamorekuru emvura ari nhanho-ne-nhanho "inotapurirwa" kubva mukati kuenda kune imwe nzvimbo yekunze.
3. Kuedza Nzira
- Hydrostatic Pressure Tester: Inoshandiswa kunyatso kuyera kusapinda mvura kwemuganho kumanikidzwa kwefirimu kana jira.
- Moisture Permeability Cup: Inoshandiswa mukati meinogara tembiricha uye mwando mukamuri kuyera mwando vapor transmission rate (MVTR) uchishandisa yakatwasuka kana inverted cup method.
4. Zvikumbiro
Kushandisa zvinhu izvi,TPU firimundiyo sarudzo yakasarudzika kune akawanda ekupedzisira-ekupedzisira maapplication:
- Zvipfeko zvekunze: Chikamu chakakosha mumabhachi akaomarara, kupfeka ski, uye bhurugwa rekufamba, kuve nechokwadi chekuoma uye kunyaradza kune vanofarira vekunze mumhepo nemvura.
- Kudzivirirwa Kwezvokurapa: Inoshandiswa mumajasi ekuvhiya uye zvipfeko zvinodzivirira kuvhara ropa uye mvura yemuviri (isina mvura) ichibvumira dikita rinogadzirwa nevashandi vezvokurapa kutiza, kuderedza kushushikana kwekupisa.
- Kudzima Moto uye Kudzidziswa Kwechiuto Kupfeka: Inopa dziviriro munzvimbo dzakanyanyisa, inoda kuramba moto, mvura, uye makemikari, pamwe nekufema kwakanyanya kuchengetedza kufamba uye kuita.
- Footwear Materials: Inoshandiswa semvura isingapindi masokisi liner (booties) kuchengetedza tsoka dzakaoma mumamiriro ekunaya uku ichidzivirira kupisa kwemukati uye hunyoro kuvaka.
Muchidimbu, kuburikidza nechimiro chayo chakasarudzika uye chemakemikari chimiro, TPU firimu zvine hunyanzvi kuenzanisa izvo zvinoita sezvinopokana zvinodiwa zve "mvura isingapinde" uye "inofema," ichiiita chinhu chakakosha chakakosha mumunda wemachira epamusoro-soro.
Nguva yekutumira: Sep-22-2025