High-abrasion-resistance polyurethane elastomer and preparation method thereof

A polyurethane elastomer, high wear-resistant technology, applied in the field of elastomer materials, can solve problems such as the decrease of tensile strength, and achieve the effect of solving application defects and increasing application fields

Active Publication Date: 2013-08-21
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now the common way to improve wear resistance is to add inorganic fillers. This method also effectively improves part of the wear resistance, but the inorganic molecules affect the entire organic system and greatly reduce the tensile strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put 200g of DDL2000D into a three-neck bottle, heat up to 100°C and vacuum dehydrate for 2.0h, then add 37g of TDI-80 after cooling down to 45°C to synthesize a prepolymer with an NCO content of 4%, and divide the synthesized prepolymer into two groups, A and B. Add 5% ultra-high molecular weight polyethylene powder to the synthesized prepolymer A; B does not add ultra-high molecular weight polyethylene powder, respectively add 10% MOCA and stir evenly, after 30 minutes into the mold, demould and put it in a 100°C oven for 8 hours. . Standard test was carried out after 7 days of room temperature vulcanization, and the test results are shown in Table 1.

[0028] Table 1 The test results of prepolymer A and prepolymer B

[0029] serial number

Embodiment 2

[0031] Put 200g of DDL2000D into a three-neck bottle, heat up to 120°C for 1.5h, vacuumize and dehydrate for 1.5h, add 48.3g of TDI-80 after cooling down to 50°C, synthesize a prepolymer with an NCO content of 6%, divide the synthesized prepolymer into two groups A and B Add 3% ultra-high molecular weight polyethylene powder to the synthesized prepolymer A: B does not add ultra-high molecular weight polyethylene powder, add 15% E300 and stir evenly, and put it into the mold for 30 minutes to be vulcanized. 10h. After 9 days of room temperature vulcanization, the standard test was carried out, and the test results are shown in Table 2.

[0032] Table 2 The test results of prepolymer A and prepolymer B

[0033] serial number

[0034] A

Embodiment 3

[0036] Put 200g of DDL2000D into a three-neck bottle, heat up to 110°C and vacuum dehydrate for 2.0h, then add 48.5g of TDI-80 after cooling down to 55°C to synthesize a prepolymer with an NCO content of 6%, divide the synthesized prepolymer into two groups A and B equally Add 5% ultra-high molecular weight polyethylene powder to the synthesized prepolymer A: B does not add ultra-high molecular weight polyethylene powder, add 20% MOCA respectively and stir evenly, after 30 minutes into the mold and vulcanize, demould and place in a 90°C oven for vulcanization 12h. After 6 days of room temperature vulcanization, the standard test was carried out, and the test results are shown in Table 3.

[0037] Table 3 The test results of prepolymer A and prepolymer B

[0038] serial number

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Abstract

The invention relates to an elastomer material and in particular relates to high-abrasion-resistance polyurethane elastomer and a preparation method thereof. The high-abrasion-resistance polyurethane elastomer comprises the following materials in percentage by mass (in terms of the weight of prepolymer): 45%-79% of polyether polyol, 1%-5% of abrasion resisting powder, 10%-20 of chain extender, and 10%-30% of polyisocyanate. The preparation method of the high-abrasion-resistance polyurethane elastomer comprises the following steps of: adding the polyether polyol to a three-necked bottle; heating up and dehydrating in vacuum; synthesizing the prepolymer by adding 10%-30% of polyisocyanate after cooling; equally dividing the synthesized prepolymer into a group A and a group B, wherein abrasion resisting powder is added to the prepolymer A, and the abrasion resisting powder is not added in the prepolymer B; respectively adding the components A and the B to a chain extender and uniformly stirring; pouring a mixture to a mould for vulcanization, de-moulding to obtain a product, then placing the product to an oven for vulcanization; and respectively carrying out standard test after vulcanizing for 5-10 days at the room temperature. According to the high-abrasion-resistance polyurethane elastomer and the preparation method thereof, ultra-high molecular weight ethylene powder is adopted for improving the abrasive resistance of the elastomer and tensile strength, so that the application defects at the existing stage are overcome, and the application field of polyurethane is broadened.

Description

technical field [0001] The invention relates to an elastomer material, in particular to a high wear-resistant polyurethane elastomer and a preparation method thereof. technical background [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. In this paper, the addition of UHMEW ethylene pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/10C08L23/06C08L75/08C08J3/24
Inventor 王帅王宝山耿佃勇荆晓东董伟
Owner ZIBO DEXIN LIANBANG CHEM IND
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