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Casting type polyurethane elastomer for electric skateboard wheel and preparation method of casting type polyurethane elastomer

A polyurethane elastomer and polyurethane elasticity technology, applied in the field of polyurethane elastomers, can solve problems such as lack of application, and achieve the effects of good environmental protection, strong toughness, and excellent impact resistance stability.

Inactive Publication Date: 2019-10-22
DONGGUAN JINGLUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the cast polyurethane elastomers on the market are used to form large-scale and complex-structured parts, and they are still lacking in the convenient application of electric skateboard wheels.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A castable polyurethane elastomer for electric skateboard wheels, the castable polyurethane elastomer is composed of prepolymer A component and chain extender B component, and the prepolymer A component consists of the following weight Parts of components: 92 parts of polycaprolactone polyol, 35 parts of macromolecular diol, 90 parts of 4,4`-diphenylmethane diisocyanate (MDI); the chain extender B component It is prepared from the following components by weight: 90 parts of polycaprolactone polyol, 20 parts of chain extender, 0.04 part of high-efficiency catalyst, 2 parts of antioxidant and 2.3 parts of ultraviolet absorber.

[0014] The macromolecular diol is a polyether polyol with a molecular weight of 650-3000 or a combination of two polyether polyols.

[0015] A preparation method for cast polyurethane elastomer for electric skateboard wheels, comprising the following steps:

[0016] 1) Preparation of component A: Dehydrate the measured polycaprolactone polyol and...

Embodiment 2

[0020] A castable polyurethane elastomer for electric skateboard wheels, the castable polyurethane elastomer is composed of prepolymer A component and chain extender B component, and the prepolymer A component consists of the following weight Parts of components are made: 85 parts of polycaprolactone polyol, 35 parts of macromolecular diol, 80 parts of 4,4`-diphenylmethane diisocyanate (MDI); the chain extender B component It is made of the following components by weight: 80 parts of polycaprolactone polyol, 15 parts of chain extender, 0.03 part of high-efficiency catalyst, 1 part of antioxidant and 1.5 parts of ultraviolet absorber.

[0021] The macromolecular diol is a polyether polyol with a molecular weight of 650-3000 or a combination of two polyether polyols.

[0022] A preparation method for cast polyurethane elastomer for electric skateboard wheels, comprising the following steps:

[0023] 1) Preparation of component A: Dehydrate the measured polycaprolactone polyol a...

Embodiment 3

[0027] A castable polyurethane elastomer for electric skateboard wheels, the castable polyurethane elastomer is composed of prepolymer A component and chain extender B component, and the prepolymer A component consists of the following weight Parts of components are made: 100 parts of polycaprolactone polyol, 35 parts of macromolecular diol, 100 parts of 4,4`-diphenylmethane diisocyanate (MDI); the chain extender B component It is made of the following components by weight: 100 parts of polycaprolactone polyol, 25 parts of chain extender, 0.05 part of high-efficiency catalyst, 3 parts of antioxidant and 3 parts of ultraviolet absorber.

[0028] A preparation method for cast polyurethane elastomer for electric skateboard wheels, comprising the following steps:

[0029] 1) Preparation of component A: Dehydrate the measured polycaprolactone polyol and macromolecular diol at 120°C and -0.1MPa for 2.5 hours, then cool down to 70°C and add the measured MDI, keeping the reaction temp...

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PUM

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Abstract

The invention discloses a casting type polyurethane elastomer for an electric skateboard wheel. The casting type polyurethane elastomer comprises a component A and a component B, wherein the components A is a prepolymer and the component B is a chain extender, wherein the component A, namely the prepolymer, is prepared from the following components in parts by weight: 85-100 parts of polycaprolactone polyol, 35 parts of macromolecule dihydric alcohol and 80-100 parts of 4,4'-methylenediphenyl diisocyanate (MDI); the component B, namely the chain extender is prepared from the following components in parts by weight: 80-100 parts of polycaprolactone polyol, 15-25 parts of a chain extender, 0.03-0.05 part of an efficient catalyst, 1-3 parts of an antioxidant and 1.5-3 parts of an ultravioletabsorber. The invention further relates to a preparation method of the casting type polyurethane elastomer for the electric skateboard wheel. The preparation method comprises the following steps: 1) preparation of the component A; 2) preparation of the component B; and 3) preparation of the casting type polyurethane elastomer. Compared with the prior art, the prepared polyurethane elastomer has excellent impact-resistant stability, high wear resistance and high resilience property, strong toughness and good environmental protection.

Description

technical field [0001] The invention relates to the technical field of polyurethane elastomers, in particular to a cast polyurethane elastomer used for electric skateboard wheels and a preparation method thereof. Background technique [0002] Polyurethane elastomer macromolecular main chain contains many repeated urethane groups, it is a new type of polymer synthetic material between rubber and plastic, its macromolecular main chain is made of polyester or polyether, etc. The flexible segment of polyol is inlaid with the rigid segment composed of isocyanate and chain extender. This structure makes polyurethane elastomer have many outstanding advantages such as high strength, high elasticity, high elongation, and high wear resistance. , are widely used in various fields of the national economy. [0003] However, most of the cast polyurethane elastomers in the existing market are used to form large-scale and complex-structured parts, and they are still lacking in the convenie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G18/42C08G18/12C08L75/04
CPCC08G18/12C08G18/4018C08G18/4277C08L75/04C08G18/42
Inventor 李文东
Owner DONGGUAN JINGLUN IND
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