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Thermoplastic polyurethane elastomer composition, preparation method and applications thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of thermoplastic polyurethane elastomer composition and its preparation, can solve problems such as poor compatibility and decreased mechanical strength of materials, and achieve excellent wear resistance, excellent mechanical properties, and a wide range of hardness. Effect

Active Publication Date: 2020-06-02
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PTFE powder has poor compatibility with the matrix polymer, which will cause a decrease in the mechanical strength of the material

Method used

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  • Thermoplastic polyurethane elastomer composition, preparation method and applications thereof
  • Thermoplastic polyurethane elastomer composition, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The olefin polymer is ethylene-α-olefin copolymer, and the addition amount is 5 parts. The ethylene content in the ethylene-α-olefin copolymer is 45 wt%, the α-olefin is propylene, and the melt index (ASTM D1238, 190°C / 2.16kg) is 0.5g / 10min (purchased from China Petroleum and Chemical Corporation, the trade mark is EP J0010 ). As the hyperbranched polymer, hyperbranched polyamide was selected, the addition amount was 5 parts, and the molecular weight was 350 g / mol (purchased from Wuhan Hyperbranched Resin Technology Co., Ltd., brand name is HyPer N101).

[0044] Mix the above two with 90 parts of polyether thermoplastic polyurethane elastomer (commercially available) with a hardness of 80A on a high-speed mixer, and melt, blend and extrude the mixture on an extruder with an extrusion temperature of 160-180°C The wear-resistant TPU composition is obtained.

Embodiment 2

[0046] The olefin polymer is selected from ethylene-α-olefin copolymer, and the addition amount is 25 parts. The ethylene content in the ethylene-α-olefin copolymer is 90wt%, the α-olefin is 1-octene, and the melt index (ASTM D1238, 190°C / 2.16kg) is 30g / 10min (purchased from Japan Mitsui Chemicals, the brand is DF 903) . The hyperbranched polymer is hyperbranched polyamidoamine, the addition amount is 5 parts, and the molecular weight is 116000 g / mol (purchased from Weihai Chenyuan Molecular New Material Co., Ltd., brand name is CDY-170A).

[0047] It is mixed with 70 parts of polyester thermoplastic polyurethane elastomer (commercially available) with a hardness of 54D on a high-speed mixer, and the mixture is melt-blended and extruded on an extruder with an extrusion temperature of 195-210°C to obtain Abrasion resistant TPU composition.

Embodiment 3

[0049] The olefin polymer is ethylene-vinyl ester copolymer, and the addition amount is 5 parts. The ethylene content in the ethylene-vinyl monomer copolymer is 60wt%, the vinyl monomer is vinyl acetate, and the melt index (ASTM D1238, 190°C / 2.16kg) is 50g / 10min (purchased from China Petrochemical Corporation, trade mark for 165E). The hyperbranched polymer is selected from hyperbranched epoxy resin, the addition amount is 25 parts, and the molecular weight is 3200g / mol (purchased from Wuhan Hyperbranched Resin Technology Co., Ltd., brand name is HyPerE102).

[0050] It is mixed with 70 parts of polyester thermoplastic polyurethane elastomer (commercially available) with a hardness of 80A on a high-speed mixer, and the mixture is melt-blended and extruded on an extruder with an extrusion temperature of 160-185°C to obtain Abrasion resistant TPU composition.

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Abstract

The invention relates to a thermoplastic polyurethane elastomer composition, a preparation method and applications thereof, wherein the composition is prepared from the following components in parts by weight: 40 to 98 parts of a thermoplastic polyurethane elastomer, 1 to 30 parts of hyperbranched polymer and 1 to 30 parts of an olefin polymer. According to the invention, the thermoplastic polyurethane elastomer composition has excellent wear resistance, fatigue resistance, excellent mechanical properties and good processability; the preparation process is simple and easy to operate; and the abrasion (ISO 4649) of the thermoplastic polyurethane elastomer composition is less than or equal to 40 mm<3>.

Description

technical field [0001] The invention belongs to the field of thermoplastic elastomer composite materials, in particular to a thermoplastic polyurethane elastomer composition and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a thermoplastic elastomer that can be melt-processed. The microstructure is a microphase-separated structure composed of hard segment phase and soft segment phase, wherein the hard segment phase is formed by the reaction of chain extender and diisocyanate, and the soft segment phase is obtained by the reaction of polyol and diisocyanate. The soft segment and the hard segment present ordered and disordered arrangement in their respective phases. It can maintain high elasticity in a wide range of hardness, and has good mechanical strength and wear resistance. In addition, TPU also has excellent oil resistance and aging resistance. [0003] As a high wear-resistant material, TPU is widely used in ...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08L23/08C08L77/00C08L79/02C08L63/00C08L33/04C08L85/02
CPCC08L75/08C08L75/06C08L2205/03C08L2207/04C08L23/0815C08L77/00C08L79/02C08L23/0853C08L63/00C08L23/0846C08L33/04C08L85/02C08L23/0869
Inventor 张元珂付小亮黄岐善
Owner WANHUA CHEM GRP CO LTD
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