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Room temperature-curing, high temperature-resistant, tough and heatproof coating and preparation method thereof

A heat-resistant coating, room temperature curing technology, used in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problem of inability to meet the requirements of thermal shock solid particles scouring, affecting the assembly of cylinder container parts, and unsatisfactory high temperature resistance effects, etc. problems, to achieve the effect of reducing the product circulation cycle, small friction coefficient, and simplifying the construction process

Inactive Publication Date: 2018-12-18
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing coatings on the inner wall of the cylinder container use a medium-high temperature curing system, mainly based on silicone resin or epoxy resin matrix, which needs to be cured at 80-130°C to form a film, which brings great changes to the construction and affects the cylinder container. Assembly of other components; epoxy resin coatings can be cured at room temperature under the action of amine curing agents and accelerators, but the high temperature resistance effect is not ideal, and cannot meet the requirements of thermal shock and solid particle erosion during use. Therefore, there is an urgent need Prepared a coating that can simultaneously meet the requirements of room temperature curing, high temperature resistance, erosion resistance and good mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A coating consisting of silicone-modified epoxy resin, polyamide curing agent, iron oxide red, molybdenum disulfide, silica and conductive carbon black, the mass ratios of which are 43%: 10%: 32%: 6 %: 6%: 3%, the method of its preparation is:

[0020] In the first step, weigh iron oxide red, molybdenum disulfide, silica, and conductive carbon black with an electronic balance, and the masses are 96g: 18g: 18g: 9g;

[0021] The second step is to mix the four kinds of powder materials, then pass through a 120-mesh sieve, and put the sieved powder materials into an oven at 60°C for 4.5 hours;

[0022] The third step is to weigh 129g of silicone modified epoxy resin with an electronic balance;

[0023] The fourth step is to add the dried powder into the silicone modified epoxy resin and stir continuously for 1 hour to reach a uniform state;

[0024] Step 5: Weigh 30 g of amide curing agent, slowly add it to the mixed system obtained in Step 4, stir evenly, and let it stan...

Embodiment 2

[0029] A heat-resistant coating consisting of silicone-modified epoxy resin, amide curing agent, red iron oxide, molybdenum disulfide, white carbon black, and conductive carbon black, the mass ratio of which is 50%: 12%: 25 %: 5%: 5%: 3%, the method of its preparation is:

[0030] In the first step, weigh iron oxide red, molybdenum disulfide, silica, and conductive carbon black with an electronic balance, and the masses are 75g: 15g: 15g: 9g;

[0031] The second step is to mix the four kinds of powder materials, then pass through a 120-mesh sieve, and put the sieved powder materials into an oven at 60°C for 5 hours;

[0032] The third step is to weigh 150g of silicone-modified epoxy resin with an electronic balance;

[0033] The fourth step is to add the dried powder into the silicone modified epoxy resin and stir continuously for 70 minutes to reach a uniform state;

[0034] Step 5: Weigh 36g of amide curing agent, slowly add it to the mixed system obtained in step 4, stir ...

Embodiment 3

[0039] A heat-resistant coating, which is composed of silicone modified epoxy resin, amide curing agent, red iron oxide, molybdenum disulfide, white carbon black, and conductive carbon black, and its mass ratio is 52%: 11%: 25%: 5%: 5%: 2%, the method of its preparation is:

[0040] In the first step, weigh iron oxide red, molybdenum disulfide, silica, and conductive carbon black with an electronic balance, and the masses are 75g: 15g: 15g: 6g;

[0041] The second step is to mix the four kinds of powders, then pass through a 120-mesh sieve, and put the sieved powders into an oven at 60°C for 5.5 hours;

[0042] The third step is to weigh 156g of silicone modified epoxy resin with an electronic balance;

[0043] The fourth step is to add the dried powder into the silicone modified epoxy resin and stir continuously for 1 hour to reach a uniform state;

[0044] Step 5: Weigh 33g of amide curing agent, slowly add it into the mixed system obtained in Step 4, stir evenly, let it s...

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Abstract

The invention provides a room temperature-curing, high temperature-resistant, tough and heatproof coating and a preparation method thereof. The coating can be cured at a temperature of 10-30 DEG C under a humidity of 15-17%, a coating layer with a thickness of 0.15 + / - 0.02 mm can tolerate the erosion of flame having an outlet temperature of 1500 K, a flow velocity of 2400 m / s and a flow rate of 8kg / s for 1 s, and the coating layer has no significant change after two-time inspection. The coating comprises, by mass, 43-54% of silicone modified epoxy resin (epoxy value of 0.02-0.11), 10-12% ofa polyamide curing agent, 25-35% of iron oxide red, 5-10% of molybdenum disulfide, 5-6% of white carbon black and 2-3% of conductive carbon black. The coating has the advantages of low cost, simple construction mode, realization of the coating layer flexibility reaching 1 mm, realization of the impact strength reaching 75 kg.cm, realization of the adhesion being crossing 0 level and circle drawing1 level, high surface hardness, and realization of the pencil hardness being 6H.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a room-temperature-curing (10-30°C) organosilicon-modified epoxy resin high-temperature-resistant tough heat-resistant coating and its preparation and use method, which solves the problem that the existing coatings cannot simultaneously meet the requirements of room-temperature curing and high-temperature resistance. The problem of high temperature erosion resistance and good mechanical properties. Background technique [0002] A cylindrical container will be subjected to severe thermal shock during use, and the instantaneous maximum temperature can reach 1500K, accompanied by erosion of solid particles. In order to meet the requirements for repeated use of the cylindrical container, it is necessary to spray high-temperature resistant paint on the inner wall of the cylindrical container. Due to the large temperature gradient of the cylindrical container (-40-60°C), the coating m...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/61C08G59/44
CPCC08G59/44C08K2003/2272C08K2003/3009C08K2201/001C09D5/18C09D7/61C09D163/00C08K3/22C08K3/30C08K3/36C08K3/04
Inventor 李盼盼王猛陈纲李航
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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