A kind of nano rare earth modified thermoplastic polyurethane elastomer
A thermoplastic polyurethane and nano-rare earth technology, which is applied in the field of polymer materials and thermoplastic polyurethane elastomer materials, can solve the problems of unsatisfactory properties of thermoplastic polyurethane elastomer materials, unsolved problems of compatibility and interface bonding between organic and inorganic materials, etc. , to achieve the effect of high unsaturation, small particle size and high tensile strength
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Embodiment 1
[0032] A nano-cerium oxide modified thermoplastic polyurethane elastomer, that is, the functionalized nano-cerium oxide obtained after plasma treatment of nano-rare earth compounds is used as a modifier, polyester diol is used as a thermoplastic polyurethane elastomer soft segment, and The isocyanate and small molecule chain extender are thermoplastic polyurethane elastomer hard segments, the isocyanate index is 0.999, and the hard segment content is 40%. Nano-rare earth modified thermoplastic polyurethane elastomers are synthesized by one-step in-situ bulk polymerization, in parts by weight Calculate, the content of polyester diol, small molecule chain extender, nano rare earth compound and isocyanate is as follows:
[0033] 60 parts of polyester diol
[0034] Small molecule chain extender 6.6 parts
[0035] 33.4 parts of isocyanate
[0036] Nano rare earth compound 0.2 parts
[0037] The polyester diol is polybutylene adipate diol (PBA) with a molecular weight of 1000 g / m...
Embodiment 2
[0049] A nano-lanthanum oxide-modified polyurethane elastomer, which uses functionalized nano-lanthanum oxide obtained after plasma treatment of nano-rare earth compounds as a modifier, polyether diol as a thermoplastic polyurethane soft segment, and isocyanate and small The molecular chain extender is a thermoplastic polyurethane hard segment, the isocyanate index is 0.97 and the hard segment content is 37%. The thermoplastic polyurethane elastomer modified by nano-lanthanum oxide is synthesized by one-step in-situ bulk polymerization. Calculated by weight, the polyether two The contents of alcohols, small molecule chain extenders, nano-rare earth compounds and isocyanates are as follows:
[0050] Polyether diol 63.0 parts
[0051] Small molecule chain extender 7.95 parts
[0052] Isocyanate 29.1 parts
[0053] Nano rare earth compound 0.3 parts
[0054] The polyether glycol is polytetrahydrofuran ether glycol (PTMEG) with a molecular weight of 2000 g / mol;
[0055] Descri...
Embodiment 3
[0065] A kind of thermoplastic polyurethane elastomer of nano europium chloride, that is, the functionalized nano europium chloride obtained after plasma treatment of nano rare earth compounds is used as a modifier, polyester diol is used as a thermoplastic polyurethane elastomer soft segment, and The isocyanate and the small molecule chain extender are thermoplastic polyurethane elastomer hard segments, the isocyanate index is 0.99, and the hard segment content is 39%. Nano-rare earth modified thermoplastic polyurethane elastomers are synthesized by one-step in-situ bulk polymerization, in parts by weight Calculate, the content of polyester diol, small molecule chain extender, nano rare earth compound and isocyanate is as follows:
[0066] 61 parts of polyester diol
[0067] Small molecule chain extender 8.4 parts
[0068] 30.6 parts of isocyanate
[0069] Nano rare earth compound 1.0 parts
[0070] The polyester diol is polycaprolactone diol (PCL) with a molecular weight ...
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