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Polyurethane elastomer with high wear resistance and corrosion resistance and preparation method of polyurethane elastomer

A polyurethane elastomer and polyurethane elasticity technology are applied in the field of highly wear-resistant and corrosion-resistant polyurethane elastomers and their preparation fields, which can solve problems such as poor corrosion resistance, and achieve the effect of solving application defects and increasing application fields.

Inactive Publication Date: 2016-10-12
无锡市金五星针纺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of poor corrosion resistance of the high wear resistance polyurethane elastomer existing in the prior art, the present invention provides a polyurethane elastomer with both corrosion resistance and wear resistance, which is obtained by copolymerization of propylene oxide and tetrahydrofuran The synergistic effect of the obtained polyether polyol and ethoxylated alkylphenol ammonium sulfate, and controlling the amount of each substance, makes the prepared polyurethane elastomer have both corrosion resistance and wear resistance

Method used

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  • Polyurethane elastomer with high wear resistance and corrosion resistance and preparation method of polyurethane elastomer
  • Polyurethane elastomer with high wear resistance and corrosion resistance and preparation method of polyurethane elastomer
  • Polyurethane elastomer with high wear resistance and corrosion resistance and preparation method of polyurethane elastomer

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Experimental program
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Effect test

Embodiment 1

[0026] The polyurethane elastomer described in this embodiment is prepared by the following raw materials by weight percentage:

[0027]

[0028]

[0029] Wherein, the mass ratio of the polyether polyol with a molecular weight of 2500-3000 and the ethoxylated alkylphenol ammonium sulfate is 3:1; the polyether polyol is a polyether polyol obtained by copolymerization of propylene oxide and tetrahydrofuran.

[0030] Put the formulated amount of polyether polyol into the three-necked bottle, heat up to 85°C and vacuum dehydrate for 2.0 hours, then add the formulated amount of hexamethylene diisocyanate and ethoxylated alkylphenol ammonium sulfate after cooling down to 45°C to synthesize the NCO content It is a 5.5% prepolymer. Add the formulated amount of 1,2-propylene glycol and polyethylene powder to the synthesized prepolymer and stir evenly. After 30 minutes of vulcanization, it is demoulded and placed in an oven at 100 ° C for 8 hours. Standard test was carried out aft...

Embodiment 2

[0032] The polyurethane elastomer described in this embodiment is prepared by the following raw materials by weight percentage:

[0033]

[0034] Wherein, the mass ratio of the polyether polyol with a molecular weight of 2500-3000 and the ethoxylated alkylphenol ammonium sulfate is 3:1; the polyether polyol is a polyether polyol obtained by copolymerization of propylene oxide and tetrahydrofuran.

[0035] Put the formulated amount of polyether polyol into the three-necked bottle, heat up to 100°C for 1.5 hours to vacuum dehydrate, then add the formulated amount of hexamethylene diisocyanate and ethoxylated alkylphenol ammonium sulfate after cooling down to 50°C to synthesize the NCO content 5% prepolymer, add formula amount of 1,2-propanediol and polyethylene powder to the synthesized prepolymer and stir evenly, put into mold for vulcanization for 30min, then demould and place in 100℃ oven for vulcanization for 10h. Standard test was carried out after 7 days of room tempera...

Embodiment 3

[0037] The polyurethane elastomer described in this embodiment is prepared by the following raw materials by weight percentage:

[0038]

[0039] Wherein, the mass ratio of the polyether polyol with a molecular weight of 2500-3000 and the ethoxylated alkylphenol ammonium sulfate is 3:1; the polyether polyol is a polyether polyol obtained by copolymerization of propylene oxide and tetrahydrofuran.

[0040] Put the formulated amount of polyether polyol into the three-necked bottle, heat up to 80°C and vacuum dehydrate for 2.0 hours, then add the formulated amount of hexamethylene diisocyanate and ethoxylated alkylphenol ammonium sulfate after cooling down to 55°C to synthesize the NCO content It is a 6% prepolymer. Add the formulated amount of 1,2-propylene glycol and polyethylene powder to the synthesized prepolymer and stir evenly. After 30 minutes of vulcanization, the mold is demoulded and placed in a 90°C oven for 12 hours. Standard test was carried out after 7 days of r...

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Abstract

The invention provides a polyurethane elastomer with high wear resistance and corrosion resistance and a preparation method of the polyurethane elastomer. The polyurethane elastomer is prepared from raw materials in percentage by weight as follows: 30-40 parts of polyether polyol with the molecular weight of 2,500-3,000, 1-5 parts of wear-resisting powder, 10-15 parts of 1,2-propylene glycol, 20-30 parts of hexamethylene diisocyanate and 10-15 parts of ammonium ethoxylated alkylphenol sulfate. The ammonium ethoxylated alkylphenol sulfate and polyether polyol prepared from epoxypropane and tetrahydrofuran through copolymerization act synergistically, and the use quantity of the substances is controlled, so that the prepared polyurethane elastomer has both the corrosion resistance and the wear resistance.

Description

technical field [0001] The invention relates to an elastomer material, in particular to a highly wear-resistant and corrosion-resistant polyurethane elastomer and a preparation method thereof. Background technique [0002] Polyurethane elastomer has good tensile strength, tear strength, impact resistance, abrasion resistance, weather resistance, hydrolysis resistance, oil resistance and other advantages. It is mainly used for coating materials (such as the protection of hoses, gaskets, tires, rollers, gears, pipes, etc.), insulators, shoe soles, and solid tires. Nowadays, many industries such as mining parts and components have put forward higher requirements for the wear resistance of products. [0003] Now the common way to improve the wear resistance is to add inorganic fillers. This method also effectively improves a part of the wear resistance, but the inorganic molecules affect the entire organic system and greatly reduce the tensile strength. [0004] CN 103254387A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/32C08G18/12C08G18/66C08L75/08C08L23/06
CPCC08G18/12C08G18/3215C08G18/4854C08G18/6674C08L75/08C08L2207/068C08G18/3206C08L23/06
Inventor 沈东
Owner 无锡市金五星针纺有限公司
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