TPU (Thermoplastic polyurethanes) ndi zinthu pakati pa mphira ndi pulasitiki.Zinthuzi ndi zosagwirizana ndi mafuta ndi madzi ndipo zimakhala ndi katundu wabwino kwambiri komanso zimakana mphamvu.TPU ndi zinthu zachilengedwe zosawononga polima.Tpu zakuthupi zili ndi ubwino wa elasticity mkulu wa mphira ndi processing ntchito pulasitiki.Sichifuna vulcanization ndipo akhoza kukonzedwa ndi makina wamba thermoplastic akamaumba.Mwachidule, thermoplastic elastomer tpu ndi thermoformed ndipo imatha kupangidwa pogwiritsa ntchito makina opangira jakisoni, ma extruder, makina omangira.Zakale ndi zotsalira ndi 100% zobwezerezedwanso, zopangira zosankha kuti zilowe m'malo mwa PVC, mphira ndi silikoni ndikuwongolera makampani a mphira ndi mapulasitiki.

Rubber: Rubber ndi organic polima yokhala ndi molekyulu yolemera mazana masauzande.Kuchiza kwa Vulcanization kumafunika kuti mukhalebe ndi kutentha kwakukulu mu kutentha kwa -50 mpaka 150°C. Low zotanuka modulus, maulamuliro 3 za kukula m'munsi kuposa zipangizo wamba, mapindikidwe lalikulu, elongation akhoza kufika 1000% (zinthu zonse ndi zosakwana 1%), kutentha amamasulidwa panthawi yotambasula, ndi elasticity kumawonjezeka ndi kutentha, amene komanso yotsika kuposa yazinthu zonse m'malo mwake.

Kusiyana pakati pa TPU ndi rabara:

1. Rubber ndi wofewa, ndipo kuuma (0-100a) kwa zinthu za tpu ndi zazikulu kwambiri pakati pa mphira ndi pulasitiki;

2. Lingaliro la elastomer ndi lalikulu kwambiri, tpu imatchedwanso thermoplastic rubber (tpr), ndipo mphira nthawi zambiri imatanthawuza mphira wa thermosetting;

3. Njira zogwirira ntchito ndizosiyana.Mphira umakonzedwa ndi kusakaniza labala, pamene TPU nthawi zambiri imakonzedwa ndi extrusion;

4. The katundu ndi osiyana.Mphira nthawi zambiri umafunika kuwonjezera zowonjezera zosiyanasiyana ndipo umafunika kutenthedwa kuti ulimbikitse, pomwe tpu ya ma thermoplastic elastomers ndi yabwino kwambiri;

5. Thermoplastic elastomer tpu ili ndi mzere wozungulira ndipo imalumikizidwa ndi hydrogen yolumikizana.Zomangira za haidrojeni zimasweka pakatentha kwambiri ndipo ndi pulasitiki.Rubber ndi wolumikizana ndi mankhwala osati thermoplastic.

6. Zinthu zapulasitiki za TPU zimakhala ndi kukana kwabwino kwambiri, zomwe zimaposa kasanu za rabara yachilengedwe, ndipo ndi chimodzi mwazinthu zomwe zimakonda kwambiri pakupanga zinthu zosavala.