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Resin-based flexible ceramic protective coating

A technology of flexible ceramics and protective coatings, applied in the direction of epoxy resin coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of inconvenient coating and brittle paint film, and achieve strong adhesion, low water absorption, and good temperature resistance Effect

Active Publication Date: 2013-05-29
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with organic coatings, inorganic rigid ceramic coatings have good flame resistance and high hardness, but their paint films are brittle and must be heated to hundreds of degrees to melt and shape inorganic particles to form inorganic polymer materials. It can only be cured after other complicated pretreatments, and in order to achieve a firm bond with the substrate, the processing requirements for the substrate are also more stringent, especially its construction process is extremely inconvenient for large-scale equipment coating

Method used

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  • Resin-based flexible ceramic protective coating
  • Resin-based flexible ceramic protective coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] After mixing 100g of diglycidyl phthalate and 100g of vinylmethyl MQ silicone resin (vinyl content 2.0%, hydroxyl content 1.2%), add 100g of alumina micropowder (average particle size 5μm) and mix at high speed Mix it evenly and make it into component A; then add 30g of isophorone diamine, mix it evenly at 20°C, and then paint or mold it. After standing at 20°C for 3 days, test the corresponding properties of the cured product according to the following method. The test results are listed in Table 1.

[0031] The compressive strength is made into a 20*20*20 cube test block and tested with reference to the national standard GB / T17671-1999.

[0032] The water contact angle is tested with a water contact angle meter after solidification into a film on a small glass piece.

[0033] Water absorption is the weight percentage of the weight gain of the original paint film measured after the paint film is completely immersed in water at 20°C for 3 days.

[0034] The corrosion ...

Embodiment 2

[0037] After mixing 90g of hydrogenated bisphenol A epoxy resin, 10g of bisphenol A epoxy resin E-51 and 20g of vinylmethyl MQ silicone resin (vinyl content 1.2%, hydroxyl content 1.6%), add 300g of silica powder (average particle size is 50μm) and 60g zirconia micropowder (average particle size is 5μm), grind and disperse evenly to form component A; then mix 15g triethylenetetramine and 5g2,4,6-tris(dimethylaminomethyl Base) After phenol is mixed evenly, mix evenly with component A, paint or mold immediately, and test the corresponding properties of the cured product after standing at 25°C for 3 days. The test results are listed in Table 1.

Embodiment 3

[0039] (1) Preparation of silane-modified methyl MQ silicone resin

[0040] Mix 50g toluene, 80g vinylmethyl MQ silicone resin (1.2% vinyl content, 1.6% hydroxyl content), 20g dodecafluoroheptylpropyltrimethoxysilane and 0.3g stannous octoate, and heat up to Reflux at 80°C for 6 hours, and then distill off the solvent toluene under reduced pressure to obtain 100 g of silane-modified methyl MQ silicone resin (hydroxyl content 0.15%).

[0041] (2) Preparation of paint

[0042] Add 100g diglycidyl tetrahydrophthalate to the above 100g silane-modified methyl MQ silicone resin and mix well, then add 100g calcium oxide (average particle size is 10μm), 300g mullite powder (aluminum silicate, The average particle size is 2μm), and grind evenly to form component A; then add 50g of N-aminoethylpiperazine and mix well at room temperature at 25°C, then paint or pour the mold, place it for 30min, then raise the temperature to 80°C and keep it for 6h. After cooling, test the corresponding...

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Abstract

The invention belongs to the field of coating preparation and discloses a resin-based flexible ceramic protective coating as well as preparation method and using methods thereof. The coating comprises the following components in parts by weight: 100 parts of epoxy resin, 20-100 parts of silicon resin, 100-850 parts of fine ceramic powder and 15-100 parts of curing agent; the fine ceramic powder has the particle size of 1-50mum; and the coating is formed through thermal curing at low temperature. The coating prepared by the invention is environmentally-friendly, free of solvent release, low in carbon content and energy-saving; and the cured coating has flexibility, high pressure resistant strength and excellent waterproof, anticorrosion and temperature resistant properties. The coating provided by the invention is simple in coating process and can be widely applied to the fields such as architectural decoration, petrochemical engineering, ocean ship, electrical equipment, aviation and aerospace.

Description

technical field [0001] The invention belongs to the field of paint preparation, in particular to a resin-based flexible ceramic protective paint. Background technique [0002] Ceramic protective coating is a very important fine chemical product, and its application has penetrated into various fields of the national economy. Ceramic protective coatings have excellent anti-corrosion and high-temperature resistance properties and are widely used in high-tech fields such as petrochemical, offshore oil and gas installations, ships, aerospace, metallurgy, electronics, automobiles, and machinery manufacturing. [0003] Inorganic rigid ceramic coatings can withstand heat up to 1000°C or even higher. Compared with organic coatings, inorganic rigid ceramic coatings have good flame resistance and high hardness, but their paint films are brittle and must be heated to hundreds of degrees to melt and form inorganic particles to form inorganic polymer materials. It needs to go through ot...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D163/02C09D183/06C09D183/07C09D7/12C09D5/18C09D5/08C08G77/38C08G77/385
Inventor 黄月文罗广建刘伟区
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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