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A kind of acid and alkali wear-resistant polyurethane elastomer and preparation method thereof

A polyurethane elastomer, acid and alkali resistance technology, applied in the field of polymer materials, can solve the problems of poor acid and alkali resistance and wear resistance, and achieve good modification effect, excellent acid and alkali resistance, and excellent wear resistance. Effect

Active Publication Date: 2019-03-15
昆山双信嘉塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the polyurethane elastomer prepared by this invention patent has the characteristics of low cost and excellent flame retardant effect, it still has the problems of poor acid and alkali resistance and wear resistance.

Method used

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  • A kind of acid and alkali wear-resistant polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Acid, alkali and wear-resistant polyurethane elastomer, prepared from the following raw materials in parts by weight: 100 parts of PCL, 39 parts of hexamethylene diisocyanate, 0.2 parts of antioxidant 626, 5 parts of MOCA, triethylenediamine 1 part, 1.3 parts of carbodiimide, 0.6 parts of UV-531, 12 parts of diatomaceous earth, 13 parts of modified composite magnesium borate whiskers.

[0028] The steps of the preparation method of this polyurethane elastomer comprise:

[0029] (1) Magnesium chloride is added to water, after stirring until uniform, adjust the ph value with ammonia water to 10, continue stirring for 30 minutes, add boric acid, potassium chloride, obtain a mixed solution after stirring until uniform, add the mixed solution in the autoclave, and heat up React for 14 hours at 200°C, take out the product after cooling down to room temperature, wash with deionized water for 5 minutes after suction filtration, dry at 100°C to obtain the precursor, put the prec...

Embodiment 2

[0034] Acid, alkali and wear-resistant polyurethane elastomer, prepared from the following raw materials in parts by weight: 100 parts of PCL, 37 parts of hexamethylene diisocyanate, 0.4 parts of antioxidant 626, 7 parts of MOCA, triethylenediamine 0.8 parts, carbodiimide 1.5 parts, UV-531 0.4 parts, diatomaceous earth 14 parts, modified composite magnesium borate whiskers 11 parts.

[0035] The steps of the preparation method of the polyurethane elastomer are the same as in Example 1.

Embodiment 3

[0037] Acid, alkali and wear-resistant polyurethane elastomer, prepared from the following raw materials in parts by weight: 100 parts of PCL, 35 parts of hexamethylene diisocyanate, 0.6 parts of antioxidant 626, 9 parts of MOCA, triethylenediamine 0.6 parts, 1.1 parts of carbodiimide, 0.8 parts of UV-531, 16 parts of diatomaceous earth, 9 parts of modified composite magnesium borate whiskers.

[0038] The steps of the preparation method of the polyurethane elastomer are the same as in Example 1.

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Abstract

The invention provides acid and alkali resistant and abrasion resistant polyurethane elastomer. The acid and alkali resistant and abrasion resistant polyurethane elastomer is prepared from the following raw materials of, by weight, 100 parts of polyhydric alcohols, 35-40 parts of isocyanate, 0.1-0.6 part of an antioxidant, 5-10 parts of chain extenders, 0.5-1 part of a catalyst, 1-1.5 parts of anti-hydrolysis agents, 0.4-0.9 part of light stabilizer, 11-16 parts of filler and 9-14 parts of modified composite magnesium borate whiskers. The invention further provides a preparation method of the polyurethane elastomer. The polyurethane elastomer provided by the invention is high in both acid and alkali resistance and abrasion resistance.

Description

technical field [0001] The invention relates to a polymer material, in particular to an acid, alkali and wear-resistant polyurethane elastomer and a preparation method thereof. Background technique [0002] Polyurethane elastomer, also known as polyurethane rubber (PUR), belongs to special synthetic rubber. Traditionally, according to the different processing characteristics of polyurethane elastomers, they can be divided into three categories: casting type (CPU), thermoplastic type (TPU) and mixing type (MPU). Mixing-type polyurethane elastomer is a solid rubber-like polymer prepared by the reaction of polyether polyol and isocyanate. It is masticated and kneaded by using traditional rubber processing machinery and processing procedures, and vulcanized with a mold. Casting type polyurethane elastomer, which is a linear liquid polymer synthesized by two-step or one-step method using polyether polyol, isocyanate, chain extender and other compounding agents, it is poured in a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/73C08G18/66C08G18/42C08G18/32C08K13/06C08K9/10C08K7/08C08K3/34C08K5/132
CPCC08G18/3814C08G18/4277C08G18/6685C08G18/73C08K3/34C08K5/132C08K7/08C08K9/10C08K13/06
Inventor 叶青
Owner 昆山双信嘉塑胶科技有限公司
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