Umahluko phakathi kwe-TPU i-polyester kunye ne-polyether, kunye nobudlelwane phakathi kwe-polycaprolactone kunye ne-TPU

Umahluko phakathi kwe-TPU i-polyester kunye ne-polyether, kunye nobudlelwane phakathipolycaprolactone TPU

Okokuqala, umahluko phakathi kwe-TPU i-polyester kunye ne-polyether

I-Thermoplastic polyurethane (TPU) luhlobo lwemathiriyeli ephezulu yokusebenza kwe-elastomer, esetyenziswa kakhulu kwiinkalo ezahlukeneyo. Ngokutsho kwesakhiwo esahlukileyo secandelo layo elithambileyo, i-TPU inokwahlulwa ibe luhlobo lwepolyester kunye nohlobo lwepolyether. Kukho umahluko omkhulu ekusebenzeni kunye nokusetyenziswa phakathi kwezi ntlobo zimbini.

I-TPU yePolyester inamandla aphezulu kunye nokumelana nokunxiba, iipropathi zokuqina, iipropathi zokugoba kunye nokumelana ne-solvent kulungile kakhulu. Ukongeza, inokumelana nobushushu obuphezulu kwaye ifanelekile kwizicelo kwiindawo zobushushu obuphezulu. Nangona kunjalo, ukuxhathisa kwe-hydrolysis ye-polyester TPU imbi kakhulu, kwaye kulula ukuba ihlaselwe ziimolekyuli zamanzi kunye nokwaphuka.

Okuchasene,ipolyether TPUiyaziwa ngamandla ayo aphezulu, ukuxhathisa i-hydrolysis kunye nokomelela okuphezulu. Ukusebenza kwayo okuphantsi kweqondo lokushisa kuhle kakhulu, kukulungele ukusetyenziswa kwiindawo ezibandayo. Nangona kunjalo, amandla e-peel kunye namandla okuqhekeka kwe-TPU ye-polyether abuthathaka, kwaye ukuxhathisa, ukuguga kunye nokukrazuka kwe-TPU ye-polyether nayo ingaphantsi kune-polyester TPU.

Okwesibini, i-polycaprolactone TPU

I-Polycaprolactone (PCL) yinto ekhethekileyo yepolymer, ngelixa i-TPU imfutshane kwi-thermoplastic polyurethane. Nangona zombini zizixhobo zepolymer, i-polycaprolactone ngokwayo ayisiyiyo i-TPU. Nangona kunjalo, kwinkqubo yokuvelisa ye-TPU, i-polycaprolactone ingasetyenziselwa njengenxalenye ebalulekileyo yecandelo elithambileyo ukusabela nge-isocyanate ukuvelisa i-TPU elastomers ezinezakhiwo ezigqwesileyo.

Okwesithathu, ubudlelwane phakathi kwepolycaprolactone kunyeTPU masterbatch

I-Masterbatch idlala indima ebalulekileyo kwimveliso yeTPU. I-Masterbatch yi-prepolymer ephezulu yoxinaniso, ngokuqhelekileyo iqulunqwe ngamacandelo ahlukeneyo afana ne-polymer, i-plasticizer, i-stabilizer, njl. Kwinkqubo yokuvelisa i-TPU, i-masterbatch inokusabela nge-chain extender, i-agent ye-crosslinking, njl., Ukuvelisa iimveliso ze-TPU ezineempawu ezithile.

Njengomsebenzi ophezulu wepolymer material, i-polycaprolactone ihlala isetyenziswa njengenxalenye ebalulekileyo ye-TPU masterbatch. Ngokusetyenziswa kwe-polycaprolactone kwangaphambili kunye namanye amacandelo, iimveliso ze-TPU ezineempawu ezibalaseleyo zomatshini, ukuxhathisa kwe-hydrolysis kunye nokumelana nokushisa okuphantsi kunokulungiswa. Ezi mveliso zinoluhlu olubanzi lwamathemba okusebenza kwiinkalo zempahla engabonakaliyo, izixhobo zonyango, izicathulo zezemidlalo kunye nokunye.

Okwesine, iimpawu kunye nokusetyenziswa kwe-polycaprolactone TPU

I-TPU ye-Polycaprolactone ithatha ingqalelo kwiinzuzo ze-polyester kunye ne-polyether ye-TPU, kwaye ineempawu ezingcono ezibanzi. Ayinayo kuphela amandla omatshini aphezulu kunye nokumelana nokunxiba, kodwa ikwabonisa ukuxhathisa okulungileyo kwe-hydrolysis kunye nokumelana nobushushu obuphantsi. Oku kwenza i-polycaprolactone TPU ibe nobomi benkonzo ende kunye nokuzinza kwiindawo ezinzima kunye neziguquguqukayo.

Kwintsimi yeengubo ezingabonakaliyo, i-polycaprolactone TPU ibe yinto ekhethiweyo ngenxa yeempawu zayo ezibanzi. Iyakwazi ukumelana nokukhukuliseka kwezinto zangaphandle ezifana nemvula ye-asidi, uthuli, inkunkuma yeentaka, kunye nokuqinisekisa ukusebenza kunye nobomi bempahla yemoto. Ukongezelela, kwiinkalo zezixhobo zonyango, izixhobo zemidlalo, njl., i-polycaprolactone TPU ifumene ingqwalasela ebanzi ngokukhuseleko nokuthembeka kwayo.

Ngamafutshane, kukho umahluko omkhulu phakathi kwe-TPU i-polyester kunye ne-polyether ekusebenzeni kunye nokusetyenziswa, ngelixa i-polycaprolactone, njengenye yamacandelo abalulekileyo e-TPU, inika iimveliso ze-TPU ezigqwesileyo ezibanzi. Ngokuqonda ngokunzulu ubudlelwane kunye neempawu phakathi kwezi zixhobo, sinokukhetha ngcono kwaye sisebenzise iimveliso zeTPU ezifanelekileyo ukuhlangabezana neemfuno zemimandla eyahlukeneyo.