Umahluko phakathi kwe-TPU polyester kunye ne-polyether, kunye nolwalamano phakathi kwe-polycaprolactone kunye ne-TPU

Umahluko phakathi kwe-TPU polyester kunye ne-polyether, kunye nolwalamano phakathii-polycaprolactone TPU

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

I-thermoplastic polyurethane (TPU) luhlobo lwezinto ze-elastomer ezisebenza kakuhle, ezisetyenziswa kakhulu kwiindawo ezahlukeneyo. Ngokwesakhiwo esahlukileyo secandelo layo elithambileyo, i-TPU inokwahlulwa ibe luhlobo lwe-polyester kunye nohlobo lwe-polyether. Kukho umahluko omkhulu ekusebenzeni nasekusetyenzisweni phakathi kwezi ntlobo zimbini.

I-Polyester TPU inamandla aphezulu kwaye iyamelana nokuguguleka, iipropati zokutsalwa, iipropati zokugoba kunye nokumelana nesinyibilikisi zilungile kakhulu. Ukongeza, inokumelana okuhle nobushushu obuphezulu kwaye ifanelekile ukusetyenziswa kwiindawo ezinobushushu obuphezulu. Nangona kunjalo, ukumelana ne-hydrolysis ye-polyester TPU kuphantsi kakhulu, kwaye kulula ukuyihlasela ziimolekyuli zamanzi kunye nokuqhekeka.

Okuchasene,i-TPU ye-polyetheryaziwa ngamandla ayo aphezulu, ukumelana ne-hydrolysis kunye nokuqina kwayo okuphezulu. Ukusebenza kwayo kubushushu obuphantsi nako kulungile kakhulu, kufanelekile ukusetyenziswa kwiindawo ezibandayo. Nangona kunjalo, amandla okuqhekeka kunye namandla okuqhekeka kwe-polyether TPU abuthathaka, kwaye ukumelana nokuxinana, ukuguguleka kunye nokukrazuka kwe-polyester TPU nako kungaphantsi kokwe-polyester TPU.

Okwesibini, i-polycaprolactone TPU

I-Polycaprolactone (PCL) yinto ekhethekileyo ye-polymer, ngelixa i-TPU isishunqulelo se-thermoplastic polyurethane. Nangona zombini ziyi-polymer materials, i-polycaprolactone ngokwayo ayiyo-TPU. Nangona kunjalo, kwinkqubo yokuvelisa i-TPU, i-polycaprolactone ingasetyenziswa njengecandelo elibalulekileyo le-soft segment ukuze iphendule nge-isocyanate ukuvelisa ii-elastomers ze-TPU ezineempawu ezintle.

Okwesithathu, ubudlelwane phakathi kwe-polycaprolactone kunyeI-TPU masterbatch

I-Masterbatch idlala indima ebalulekileyo ekuvelisweni kwe-TPU. I-Masterbatch yi-prepolymer enoxinzelelo oluphezulu, edla ngokwenziwa zizinto ezahlukeneyo ezifana ne-polymer, i-plasticizer, i-stabilizer, njl. Kwinkqubo yokuvelisa i-TPU, i-masterbatch inokusabela nge-chain extender, i-agent edibanisayo, njl.njl., ukuvelisa iimveliso ze-TPU ezineempawu ezithile.

Njengesixhobo sepolymer esisebenza kakuhle, i-polycaprolactone idla ngokusetyenziswa njengenxalenye ebalulekileyo ye-TPU masterbatch. Ngokusebenzisa i-prepolymerization ye-polycaprolactone kunye nezinye izinto, iimveliso ze-TPU ezineempawu ezintle zoomatshini, ukumelana ne-hydrolysis kunye nokumelana nobushushu obuphantsi zinokulungiswa. Ezi mveliso zinoluhlu olubanzi lwezinto ezinokwenzeka kwiinkalo zempahla engabonakaliyo, izixhobo zonyango, izihlangu zemidlalo njalo njalo.

Okwesine, iimpawu kunye nokusetyenziswa kwe-polycaprolactone TPU

I-Polycaprolactone TPU ithathela ingqalelo iingenelo ze-polyester kunye ne-polyether TPU, kwaye ineempawu ezibanzi ngakumbi. Ayigcini nje ngokuba namandla aphezulu oomatshini kunye nokumelana nokuguguleka, kodwa ikwabonisa ukumelana okuhle kwe-hydrolysis kunye nokumelana nobushushu obuphantsi. Oku kwenza i-polycaprolactone TPU ibe nobomi obude benkonzo kunye nozinzo kwiindawo ezinzima nezitshintshatshintshayo.

Kwicandelo lempahla engabonakaliyo, i-polycaprolactone TPU iye yaba yeyona nto ikhethwayo ngenxa yeempawu zayo ezibalaseleyo ezibanzi. Ingamelana nokukhukuliseka kwezinto zangaphandle ezifana nemvula ene-asidi, uthuli, ubulongwe beentaka, kwaye iqinisekise ukusebenza kunye nobomi bempahla yemoto. Ukongeza, kwicandelo lezixhobo zonyango, izixhobo zemidlalo, njl.njl., i-polycaprolactone TPU ikwafumene ingqwalasela ebanzi ngenxa yokhuseleko kunye nokuthembeka kwayo.

Ngamafutshane, kukho umahluko omkhulu phakathi kwe-TPU polyester kunye ne-polyether ekusebenzeni nasekusetyenzisweni kwayo, ngelixa i-polycaprolactone, njengenye yezinto ezibalulekileyo ze-TPU, inika iimveliso ze-TPU iipropati ezibalaseleyo ezibanzi. Ngokuqonda ngokunzulu ubudlelwane kunye neempawu phakathi kwezi zinto, sinokukhetha ngcono kwaye sisebenzise iimveliso ze-TPU ezifanelekileyo ukuhlangabezana neemfuno zamacandelo ahlukeneyo.