TPU (Thermoplastic polyurethanes) ke thepa e lipakeng tsa rabara le polasetiki.Thepa ha e na oli le metsi 'me e na le thepa e ntle haholo ea ho jara le ho hanyetsa tšusumetso.TPU ke sesebelisoa sa polymer se se nang chefo tikolohong.Lisebelisoa tsa Tpu li na le melemo ea elasticity e phahameng ea rabara le ts'ebetso ea ts'ebetso ea polasetiki.Ha e hloke vulcanization mme e ka sebetsoa ke mechini e tloaelehileng ea ho bopa ea thermoplastic.Ka mantsoe a bonolo feela, thermoplastic elastomer tpu e entsoe ka thermoformed mme e ka hlahisoa ka mochini oa ho bopa ente, li-extruder, metjhini e bopang.Lintho tse setseng le tse setseng li ka sebelisoa hape ka 100%, thepa e tala ea khetho ea ho nka sebaka sa PVC, rabara le silicone le ho laola indasteri ea rabara le polasetiki.

Rubber: Rabara ke polima ea tlhaho e nang le boima ba limolek'hule tse makholo a likete.Phekolo ea vulcanization ea hlokahala ho boloka elasticity e phahameng ka har'a mocheso oa -50 ho isa ho 150°C. Low elastic modulus, litaelo tse 3 tsa boholo bo tlase ho feta lisebelisoa tse tloaelehileng, deformation e kholo, elongation e ka fihla ho 1000% (lisebelisoa tse akaretsang li ka tlase ho 1%), mocheso o lokolloa nakong ea ts'ebetso ea ho otlolla, 'me elasticity e eketseha ka mocheso, e leng hape e tlase ho feta ea lisebelisoa tse akaretsang ho fapana le hoo.

Phapang pakeng tsa TPU le rabara:

1. Rubber e batla e le bonolo, 'me mefuta e thata (0-100a) ea thepa ea tpu e pharaletseng haholo pakeng tsa rabara le polasetiki;

2. Khopolo ea elastomer e pharaletseng haholo, tpu e boetse e bitsoa rabara ea thermoplastic (tpr), 'me rabara hangata e bua ka rabara ea thermosetting;

3. Mekhoa ea ho sebetsa e fapane.Rubber e sebetsoa ka ho kopanya rabara, ha TPU e atisa ho sebetsoa ka extrusion;

4. Thepa e fapane.Hangata rabara e hloka ho kenyelletsa li-additives tse fapaneng mme e hloka ho ts'oaroa bakeng sa matlafatso, athe ts'ebetso ea tpu ea li-elastomer tsa thermoplastic e ntle haholo;

5. Thermoplastic elastomer tpu e na le sebopeho sa mola 'me e amana le' mele ka ho kopanya hydrogen.Li-bond tsa haedrojene li robeha mochesong o phahameng 'me ke polasetiki.Rabara e kopantsoe ka lik'hemik'hale eseng thermoplastic.

6. Lisebelisoa tsa polasetiki tsa TPU li na le khanyetso e ntle ea ho apara, e leng makhetlo a fetang a mahlano a rabara ea tlhaho, 'me ke e' ngoe ea lisebelisoa tse ratoang bakeng sa lihlahisoa tse sa senyeheng.