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

Inactive Publication Date: 2015-09-30
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unresolved compatibility and interfacial bonding of organic and inorganic materials, the performance of the actually obtained inorganic modified thermoplastic polyurethane elastomer material is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a nano rare earth modified thermoplastic polyurethane elastomer composed of the following components in parts by weight: 50-63 parts of polyether glycol or polyester glycol, 6.6-11.9 parts of micromolecular chain extender, 0.1-3.0 parts of nano rare earth compounds and 29.1-38.1 parts of isocyanate. The nano rare earth modified thermoplastic polyurethane elastomer with the tensile strength of 24.5-41.2MPa, the elongation at break of 537-851% and the glass transition temperature of 28-10.5 DEG C below zero is synthesized by using a one-step in-situ mass polymerization method and taking a functionalized nano rare earth compound obtained after treating the nano rare earth compound by using a plasma as a modifying agent, the polyether glycol or polyester glycol as a soft segment of thermoplastic polyurethane as well as the isocyanate and the micromolecular chain extender as hard segments of the thermoplastic polyurethane, wherein the index R of the isocyanate is 0.95-0.999, and the content of the hard segments is 35-50%.

Description

Technical field [0001] The invention involves a thermoplastic polyurethane elastic material, which specifically involves a thermoplastic polyurethane elastic body with a modified nano -rare earth, which is the field of polymer material research. Background technique [0002] The thermoplastic polyurethane elastic body is made of polyether (or polyester) multi -alcohol as a soft segment. The alcohol and amine expansion agents of isocyanate and low -molecular are polymerized.The unique micro -phase separation structure is formed due to the incompatibility of the soft segment and the hard segment, which gives them high -strength, high wear resistance, high rebound, high toughness, tear resistance, processable, recyclable, etc.It has been widely used in national defense, automobiles, sports, medical care, coatings and other fields. [0003] With the expansion of the field of application towards high -end clothing and aerospace, higher requirements have been put on the performance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/44C08G18/32C08K9/00C08K9/02C08K3/22C08K3/16C08K3/26
CPCC08G18/4238C08G18/44C08G18/4825C08G18/4854C08G18/664C08G18/6648C08G18/6651C08G18/6674C08K3/16C08K3/22C08K3/26C08K9/00C08K9/02C08K2003/221C08K2003/2213C08K2201/011
Inventor 贾润萍王彩峰黄茂松徐家跃
Owner SHANGHAI INST OF TECH
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