TPU Nhanganyaya

Thermoplastic polyurethane (TPU) inonyungudika-inogadziriswa thermoplastic elastomer ine kusimba kwepamusoro uye kuchinjika. Iyo ine hunhu hweese epurasitiki nerabha uye nekudaro inoratidza zvivakwa zvakaita sekugara, kuchinjika pamwe nekusimba kwesimba.

TPU, chizvarwa chitsva che thermoplastic elastomer zvinhu. Chimiro chayo chinosanganisira chikamu chakaoma uye chakapfava chikamu, chakagadzirwa ne polyols, isocyanate uye cheni extender ne condensation reaction.
Zvimiro zveTPU zvinosanganisira zvakatipoteredza-hushamwari, kugadzirisa nyore, kuita kwakasiyana-siyana, kudzokorodza nezvimwe; TPU ine yakanakisa midziyo yemuviri, abrasion resistance, coloring iri nyore, high elasticity, weather resistance, mafuta kuramba uye tembiricha yakaderera nezvimwewo, inoshandiswa zvakanyanya mufoni. kesi, overmolding, shangu, firimu, adhesive, bhandi & conveyor, waya & tambo etc.

Maererano nemhando ye polyols, TPU inogona kukamurwa kuva polyester giredhi, polyether giredhi, polycaprolactone giredhi uye polycarbonate giredhi etc. Mhando dzakasiyana dzeTPU dzine midziyo yakasiyana, inogona kushandiswa mukushandisa kwakasiyana. Hukukutu hwemhando yeTPU hwakafara, hunofukidza 50A-85D.

• Yakapfava Segment (polyether kana polyester): Yakavakwa kunze kwepolol uye isocyanate inopa kuchinjika uye elastomeric hunhu hweTPU.
• Yakaoma Segment (inonhuwira kana aliphatic): Inovakwa kubva kune cheni extender uye isocyanate ichipa TPU kuoma kwayo uye kuita kwemuviri zvivakwa.
  1. Inonhuhwirira TPUs - inobva pane isocyanates yakadai seMDI
  2. Aliphatic TPUs - inobva pane isocyanates seHMDI, HDI uye IPDI

Thermoplastic polyurethanes iri elastic uye inonyungudika-inogadziriswa. Zvinowedzera zvinogona kuvandudza kugadzikana kwedimensional uye kupisa kupisa, kuderedza kukweshera, uye kuwedzera murazvo kunonoka, fungus kuramba, uye mamiriro ekunze.

Anonhuhwirira TPUs akasimba, akajairika-chinangwa resin anoramba kurwiswa nehutachiona, anosimuka zvakanaka kumakemikari. An aesthetic drawback, zvisinei, maitiro ekunhuhwirira anokanganisa nemahara radical nzira dzinokonzerwa nekusangana nekupisa kana ultraviolet chiedza. Kushatisa uku kunotungamira mukushanduka kwechigadzirwa uye kurasikirwa kwehunhu hwemuviri.

Zviwedzerwa zvakaita semaoxidants, zvinotora UV, zvinodzivirira amine stabilizers zvinoshandiswa kuchengetedza polyurethanes kubva kuUV chiedza-induced oxidation uye nekudaro inoita thermoplastic polyurethanes yakakodzera kune dzakasiyana siyana dzekushandisa izvo zvingada zvese zvinopisa uye / kana kugadzikana kwechiedza.

Aliphatic TPU, kune rumwe rutivi, yakagadzikana yakagadzikana uye inoramba kushanduka kubva kuUV kuratidzwa. Iwo zvakare akajeka optically, izvo zvinovaita akakodzera laminates yekuputira girazi uye kuchengetedza glazing.