Spray polyurea elastomer for mine, preparation and construction method thereof

A polyurea elastomer, mining technology, applied in coatings, devices for coating liquid on the surface, etc., can solve problems such as poor wear resistance, and achieve excellent flexibility, excellent adhesion, and good adhesion

Inactive Publication Date: 2008-11-12
青岛佳联化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a spray-coated polyurea elastomer used in mines and its preparation method and construction method, which can solve the problem of poor wear resistance in the prior art, and provide a reasonable configuration, high hardness, wear resistance, The polyurea elastomer wear-resi...

Method used

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  • Spray polyurea elastomer for mine, preparation and construction method thereof
  • Spray polyurea elastomer for mine, preparation and construction method thereof
  • Spray polyurea elastomer for mine, preparation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A consists of about 15 parts of 2,4'-diphenylmethane diisocyanate and 41 parts of 4,4'-diphenylmethane diisocyanate and 44 parts of polyepoxide with a molecular weight of 1000 and a functionality of 2. Propane ether diol (TDiol-1000, Tianjin Petrochemical No. 3 Plant) prepared prepolymer. The NCO content of the prepolymer was (15±0.1)%. The R component consists of T-5000 amino resin, D-2000, D-400, DETDA amino resin and TiO 2 The composition of the mixture. Accurately weigh the various raw materials in the R component according to the formula, add them into the paint tank, and stir at high speed for 30 minutes with high-speed shearing and dispersing equipment.

[0044] The isocyanate index of this system was 1.10. The specific ratio is shown in the table below.

[0045]

[0046] A and R components are sprayed with high-pressure collision mixing spraying equipment at a volume ratio of 1:1. Spray the coating onto a PVC panel coated with a release agent. Aft...

Embodiment 2

[0050] A consists of about 15 parts of 2,4'-diphenylmethane diisocyanate and 41 parts of 4,4'-diphenylmethane diisocyanate and 44 parts of polytetrahydrofuran ether with a molecular weight of 1000 and a functionality of 2. Alcohol (PTMG-1000, BASF, Germany) prepared prepolymer. The NCO content of the prepolymer is (15±0.1)%, and the viscosity at 25° C. is about 1200 cps. The R component consists of T-5000 amino resin, D-2000, D-400, DETDA amino resin and TiO 2 The composition of the mixture. Accurately weigh the various raw materials in the R component according to the formula, add them into the paint tank, and stir at high speed for 30 minutes with high-speed shearing and dispersing equipment.

[0051] The isocyanate index of this system was 1.10. The specific ratio is shown in the table below.

[0052]

[0053] A and R components are sprayed with high-pressure collision mixing spraying equipment at a volume ratio of 1:1. Spray the coating onto a PVC panel coate...

Embodiment 3

[0057] A consists of about 30 parts of 2,4'-diphenylmethane diisocyanate and 26 parts of 4,4'-diphenylmethane diisocyanate and 44 parts of polytetrahydrofuran ether with a molecular weight of 1000 and a functionality of 2 Diol (PTMG-1000, BASF, Germany) prepared prepolymer. The NCO content of the prepolymer is (15±0.1)%, and the viscosity at 25° C. is about 1200 cps. The R component consists of T-5000 amino resin, D-2000, D-4000, DETDA amino resin, TiO 2 , mica powder mixture. Accurately weigh the various raw materials in the R component according to the formula, add them into the paint tank, and stir at high speed for 30 minutes with high-speed shearing and dispersing equipment.

[0058] The isocyanate index of this system was 1.10. The specific ratio is shown in the table below.

[0059]

[0060] A and R components are sprayed with high-pressure collision mixing spraying equipment at a volume ratio of 1:1. Spray the coating onto a PVC panel coated with a releas...

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Abstract

The invention provides a spraying polyurea elastomer applied to a mine, a method for making the same and a construction method. The spraying polyurea elastomer can solve the problem of poor wearing resistance in the prior art. The invention comprises the following technical proposals that: the spraying polyurea elastomer applied to the mine comprises two compositions A and R, wherein, the composition A is a semi-prepolymer synthesized by 45 to 65 portions of polyisocyanate and 35 to 55 portions of polyether polyol; the composition R comprises 55 to 80 portions of amine terminated polyether, 15 to 33 portions of chain extender and 5 to 25 portions of antiwear filler; and the compositions A and R are matched for use according to an isocyanate index of between 0.9 and 1.2. The spraying polyurea elastomer has good physical performance, high wearing resistance, good oil resistance, hydrolization resistance, bacteria resistance and aging resistance and good construction performance and can be used in a vibration sieve equipment lining, a flotation equipment lining, etc. of the mine and other application places which have high requirement on wearing resistance.

Description

technical field [0001] The invention relates to the field of polymer chemical materials for anti-wear linings of mechanical equipment that are easy to wear, in particular to a spray-coated polyurea elastomer used in mines, a preparation method and a construction method thereof. Background technique [0002] Mechanical equipment used in mining, construction, chemical and other fields, such as vibrating screens, roller rotary screens, spiral separator linings, water conservancy separators and other equipment, due to serious wear and tear during use, resulting in equipment wear and corrosion. In order to reduce wear and corrosion of this type of equipment, the existing way is to line the wear surface of the equipment with a protective layer. At present, the commonly used protective layer is solid epoxy paint and water-based paint, which need to be sprayed repeatedly, with slow speed and uneven thickness. All of these generally have the following disadvantages: 1) Insufficient ...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D7/12B05D1/02B05D1/34B05D7/24
Inventor 刘培礼胡松霞王宝柱刘东晖崔洪犁
Owner 青岛佳联化工新材料有限公司
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