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Damp-heat-resistant acid-resistant paint by using isocyanate for curing novolac epoxy resin

An epoxy resin and isocyanate technology, applied in coatings, anti-corrosion coatings, fire-retardant coatings, etc., can solve the problems of poor acid resistance, poor heat resistance of epoxy resin, good water resistance of chlorinated rubber, etc., to improve the resistance to heat and humidity and acid resistance. , Improve heat and humidity resistance and acid resistance, reduce the effect of coating times

Inactive Publication Date: 2016-10-12
青岛乐化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most widely used anticorrosive paint at home and abroad is epoxy resin type, but epoxy resin is relatively poor in acid resistance; although polyurethane acid resistance is better, it is particularly sensitive to water; chlorinated rubber has good water resistance and heat resistance. bad again
Therefore, the existing synthetic resins with good anti-corrosion properties have their own characteristics and are relatively insufficient.

Method used

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  • Damp-heat-resistant acid-resistant paint by using isocyanate for curing novolac epoxy resin
  • Damp-heat-resistant acid-resistant paint by using isocyanate for curing novolac epoxy resin
  • Damp-heat-resistant acid-resistant paint by using isocyanate for curing novolac epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A heat-resistant and acid-resistant paint using isocyanate to cure Norvolac epoxy resin is composed of component A and component B. The component A is composed of the following components by weight: 35 parts of NOVOLAC EPOXY resin, 16 parts of xylene, 4.6 parts of butyl acetate, 0.3 part of dispersant, 15 parts of coloring pigment, 10 parts of ultrafine barium sulfate, 5 parts of sericite, 12 parts of mica iron oxide, 2 parts of chromium oxide green, 1 part of cobalt blue, 0.5 part of anti-settling agent, 0.5 part of catalyst, 0.3 part of leveling agent, and 0.3 part of defoamer. The B component is TMP-TDI adduct. The weight ratio of component A and component B is 2.2:1.

[0034] Above-mentioned NOVOLAC EPOXY resin adopts following steps to make:

[0035] (1) Synthesis of low-molecular-weight phenolic resin: After heating and melting phenol in advance, add it to the reaction kettle and mix it with formaldehyde. The molar ratio of phenol and formaldehyde is 1:0.5. Aft...

Embodiment 2

[0044] A heat-resistant and acid-resistant paint using isocyanate to cure Norvolac epoxy resin is composed of component A and component B. The component A is composed of the following components by weight: 30 parts of NOVOLAC EPOXY resin, 20 parts of xylene, 4 parts of butyl acetate, 0.4 part of dispersant, 10 parts of coloring pigment, 8 parts of ultrafine barium sulfate, 6 parts of sericite, 10 parts of mica iron oxide, 3 parts of chromium oxide green, 1 part of cobalt blue, 0.4 part of anti-settling agent, 0.6 part of catalyst, 0.7 part of leveling agent, and 0.2 part of defoamer. The B component is HDI trimer (BAYER Desmodur N3300, Germany). The weight ratio of component A and component B is 2:1.

[0045] Above-mentioned NOVOLAC EPOXY resin adopts following steps to make:

[0046] (1) Synthesis of low-molecular-weight phenolic resin: After heating and melting phenol in advance, add it to the reaction kettle and mix it with formaldehyde. The molar ratio of phenol to forma...

Embodiment 3

[0051] A heat-resistant and acid-resistant paint using isocyanate to cure Norvolac epoxy resin is composed of component A and component B. The component A is composed of the following components by weight: 40 parts of NOVOLAC EPOXY resin, 10 parts of xylene, 6 parts of butyl acetate, 0.2 parts of dispersant, 18 parts of coloring pigment, 10 parts of ultrafine barium sulfate, 5 parts of sericite, 12 parts of mica iron oxide, 1 part of chromium oxide green, 2 parts of cobalt blue, 0.7 part of anti-settling agent, 0.3 part of catalyst, 0.2 part of leveling agent, and 0.5 part of defoamer. The B component is HDI trimer (BAYER Desmodur N3300, Germany). The weight ratio of component A and component B is 3:1.

[0052] The preparation method of NOVOLAC EPOXY resin is the same as embodiment 1.

[0053] The above-mentioned dispersant is Tego710. Coloring pigments include carbon black, titanium dioxide, phthalocyanine blue, permanent violet and permanent red F3RK, etc., which can be s...

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Abstract

The invention discloses a heat-resistant and acid-resistant paint using isocyanate to cure Novolac epoxy resin, which is composed of component A and component B; the component A is composed of the following components by weight: 30-40 parts of NOVOLAC EPOXY resin, 10-20 parts of xylene, 4-6 parts of butyl acetate, 0.2-0.4 parts of dispersant, 10-18 parts of coloring pigment, 8-10 parts of superfine barium sulfate, 5-6 parts of sericite 6 parts, 10-12 parts of mica iron oxide, 1-3 parts of chromium oxide green, 1-2 parts of cobalt blue, 0.4-0.7 parts of anti-settling agent, 0.3-0.6 parts of catalyst, 0.2-0.7 parts of leveling agent, defoaming 0.2-0.5 part of agent; said component B is TMP-TDI adduct or HDI trimer; the weight ratio of component A and component B is 2-3:1. The moisture-heat-resistant and acid-resistant paint prepared by the invention has excellent performance and can meet the anticorrosion requirements of automatic production equipment for silica gel.

Description

technical field [0001] The invention relates to a heat-and-humidity-resistant acid-resistant paint, in particular to a heat-and-humidity-resistant acid-resistant paint which adopts isocyanate to cure Novolac epoxy resin. Background technique [0002] At present, there are thousands of anti-corrosion paints in the coating industry at home and abroad, but they still cannot meet the anti-corrosion requirements of widely varying corrosive environments. The anticorrosion of silicone automatic production equipment is a very typical subject of anticorrosion paint. [0003] Silica gel is an ideal carrier for various catalysts. Petrochemical, polymer synthesis and other industries are inseparable from catalysts. Silica gel can be used as a catalyst carrier, desiccant, indicator, mold release agent, molecular sieve, filler, etc. It has developed rapidly in recent years, and there is a great demand for silica gel in domestic and foreign markets. Silica gel is one of the important exp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D7/12C09D5/08C08G59/40
CPCC09D163/04C08G59/4028C08K3/22C08K3/30C08K3/34C08K13/02C08K2003/2251C08K2003/2272C08K2003/3045C09D5/08C09D5/18C09D7/61C09D7/63
Inventor 王兆安姜显华曹绪梅张汝才
Owner 青岛乐化科技有限公司
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