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Heat-resistant primer and preparation method thereof

A primer and heat-resistant technology, used in coatings, fire-resistant coatings, polyurea/polyurethane coatings, etc., can solve the problems of increasing construction difficulty, high hardness and poor flexibility of silicone systems, and achieve fire-resistant performance, increase Adhesive, easy-to-operate effect

Active Publication Date: 2019-08-09
MARINE CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, heat-resistant coatings are mainly based on silicone resin systems or silicone modified resin systems. Silicone coatings have better heat resistance, but usually require high temperature curing, which will increase the difficulty of construction. At the same time, the hardness of silicone systems high, poor flexibility

Method used

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  • Heat-resistant primer and preparation method thereof
  • Heat-resistant primer and preparation method thereof
  • Heat-resistant primer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033]

[0034]

[0035] Concrete preparation steps:

[0036] 1. Prepare mixed organic solvent: mix xylene, butyl acetate, and propylene glycol methyl ether acetate in a weight ratio of 5:3:2;

[0037]2. Preparation of component A: add 30g of bisphenol A epoxy resin (epoxy value 0.51) in component A to the mixed organic solvent under stirring at a rotation speed of 600-700r / min, and wait until the resin is completely dispersed Finally, add 10g of mica powder, 10g of precipitated barium sulfate, 5g of rutile titanium dioxide, 5g of zinc phosphate, 2g of magnesium hydroxide, 2g of bisphenol A-bis(diphenyl phosphate), 2g of toluene diphenyl phosphate (unless the floating type All ingredients except aluminum powder and additives) use a basket sand mill at a speed of 1900-2000r / min, grind to a fineness of ≤45μm, add 1.5g BYK-AT203, 0.2g BYK-051, 0.3g BYK-310, filter through 80 mesh filter, add 2g of non-leafing aluminum powder under stirring at 200-300r / min, after dispersing...

Embodiment 2

[0044]

[0045] 1. Prepare mixed organic solvent: mix xylene, butyl acetate, and propylene glycol methyl ether acetate in a weight ratio of 1:1:1;

[0046] 2. Preparation of component A: Add 15g of bisphenol A epoxy resin (epoxy value 0.44) and 5g of hydroxyacrylate resin in component A to the mixed organic solvent under stirring at a speed of 600-700r / min After the resin is completely dispersed, add 3g rutile titanium dioxide, 12g fumed silica, 5g clay, 10g talcum powder, 5g aluminum tripolyphosphate, 5g triphenyl phosphate, 2g aluminum hydroxide, 1g antimony trioxide , use a basket sand mill with a speed of 1900-2000r / min, grind to a fineness of ≤45μm, add 1.5g BYK-161, 0.1gBYK-065, 0.4gBYK-333 while stirring at a speed of 600-700r / min, Filter through an 80-mesh filter, add 5g of non-leafing aluminum powder under stirring at 200-300r / min, and disperse evenly to obtain component A;

[0047] 3.B component: add IPDI in the reaction kettle, after heating up to 50°C, N 2 Und...

Embodiment 3

[0052]

[0053]

[0054] 1. Prepare mixed organic solvent: mix xylene, butyl acetate, and propylene glycol methyl ether acetate in a weight ratio of 1:1:1;

[0055] 2. Preparation of component A: Add 20g of bisphenol A epoxy resin (epoxy value 0.21) and 10g of hydroxyacrylate resin in component A to the mixed organic solvent under stirring at a speed of 600-700r / min. After the resin is completely dispersed, add 2g rutile titanium dioxide, 6g heavy calcium, 4g clay, 8g mica powder, 2g zinc powder, 10g dimethyl methylphosphonate, 2g magnesium hydroxide, and use a basket sand mill , at a speed of 1900-2000r / min, grind to a fineness ≤45μm, add 0.5g BYK-9076, 0.1g BYK-053, 0.4g BYK-331, 80-mesh filter under stirring at a speed of 600-700r / min Filtrate, add 2g of non-leafing aluminum powder and 2g of expandable graphite under stirring at 200-300r / min, and obtain component A after dispersing evenly;

[0056] 3.B component: add IPDI in the reaction kettle, after heating up to 5...

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Abstract

The invention discloses a heat-resistant primer and a preparation method thereof. The heat-resistant primer comprises a component A and a component B, the component A is prepared from, by weight, 15%-30% of bisphenol A epoxy resin, 0%-10% of hydroxyl acrylate resin, 20%-50% of inorganic filler, 2%-5% of a rust-proof pigment, 2%-5% of non-floating aluminum powder, 5%-15% of a fire retardant, 0.5%-2% of a dispersing agent, 0.1%-0.5% of an antifoaming agent, 0.1%-0.5% of a flatting agent and 20%-40% of a mixed organic solvent. The component B is prepared from, by weight, 100% of modified isocyanate. The weight ratio of the component A to the component B is (2.5-4):1. The heat-resistant primer can be used in a high-temperature environment of 200 DEG C for a long time, is curved at normal temperature and good in flexibility, has certain fire resistance, and is resistant to various kinds of miscella and organic solvents.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a heat-resistant primer and a preparation method thereof. Background technique [0002] In a broad sense, heat-resistant coatings refer to coatings that can be used at high temperatures above 100 °C for a long time without discoloration or failure of coating performance. Heat-resistant coatings are widely used in daily life. For example, they can be used in important fields such as oil pipelines in the petrochemical industry, high-temperature motor casings, power cabins, outer surfaces of high-temperature furnaces, and aerospace; , can be used for electrical insulation, heating devices for household appliances, etc. [0003] At present, heat-resistant coatings are mainly based on silicone resin systems or silicone modified resin systems. Silicone coatings have better heat resistance, but usually require high temperature curing, which will increase the difficulty of constructi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/18C09D7/61C09D7/63C08G18/58C08G18/62C08G18/48C08G18/75
CPCC08G18/4063C08G18/4804C08G18/58C08G18/6229C08G18/755C08K2003/0812C08K2003/0893C08K2003/2224C08K2003/2227C08K2003/2241C08K2003/321C08K2003/327C09D5/18C09D7/61C09D7/63C09D7/70C09D175/08C08K13/02C08K3/22C08K3/36C08K3/346C08K3/34C08K3/32C08K5/523C08K3/2279C08K3/08C08K13/04C08K7/24
Inventor 李志士王华进张立国姜清淮王明强赵薇
Owner MARINE CHEM RES INST CO LTD
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