Organic silicon modified epoxy heat-resistant and anti-corrosive coating and preparation method thereof

An anti-corrosion coating, silicone technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings and other directions, can solve the problem of difficult modification of epoxy resin by silicone, and achieve excellent paint film performance and good heat resistance. Effect

Active Publication Date: 2011-06-22
浙江大桥油漆有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the existing epoxy resin coating is difficult to achieve both good high tempe

Method used

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  • Organic silicon modified epoxy heat-resistant and anti-corrosive coating and preparation method thereof

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Embodiment Construction

[0025] The present invention will be specifically described below through examples, but the protection scope of the present invention is not limited thereto.

[0026] A silicone-modified epoxy heat-resistant anti-corrosion coating, which is composed of component A of the coating main agent and component B of the curing agent. The paint main agent is prepared by the following steps:

[0027] 1) Using methylphenylsiloxane monomers to synthesize prepolymers to obtain silicone oligomers;

[0028] 2) Using xylene and cyclohexanone as a mixed solvent, adding zinc naphthenate catalyst, epoxy resin E-20 and silicone oligomer reacted at 130°C for 4 hours to obtain a light yellow transparent liquid, and then adding an appropriate amount of solvent to prepare A solution with a solid content of 50% to obtain the base resin;

[0029] Resin reaction formula is as follows table 1:

[0030] Table 1: Raw material formula of organosilicon modified epoxy heat-resistant resin

[0031] ...

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Abstract

The invention relates to an organic silicon modified epoxy resin coating and a preparation method thereof. The coating consists of a coating main agent A component and a curing agent B component, wherein a coating main agent consists of substrate resin, a pigment-filler, a solvent and an aid; the substrate resin is obtained by modifying epoxy resin E-20 by using a methyl phenyl organic silicon low polymer; the using amount of the substrate resin accounts for 50-55 percent of the weight of the coating main agent; the weight ratio of the methyl phenyl organic silicon low polymer to the epoxy resin E-20 is (11-20):(15-16); the curing agent is polyamide; and the weight ratio of the coating main agent to the curing agent is 100:(7-12). The method comprises the following steps of: undergoing a condensation copolymerization reaction on hydroxyl, amino and alkoxyl in organic silicon resin with hydroxyl in epoxy resin; and grafting organic silicon -Si-O-group into the epoxy resin to obtain the modified epoxy heat-resistant coating with high heat resistance, high corrosion resistance and high paint film property.

Description

technical field [0001] The invention belongs to the modification of epoxy resin paint, and relates to a silicone-modified epoxy resin paint and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of high-tech, the requirements for high-temperature-resistant structural materials and heat-resistant coatings have become higher and higher. Practice has proved that high-temperature structural materials and heat-resistant coatings must have good high-temperature strength and It is difficult and expensive to have excellent anti-oxidation and anti-corrosion properties. Although the existing epoxy resin coating has many excellent properties, such as excellent oxidation resistance and corrosion resistance, its heat resistance is not good enough. With the continuous expansion of the application range of epoxy resin, the requirements for heat resistance are getting higher and higher. The modification of epoxy resin with silicone prepo...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 姜方群徐今能汪庆宇张逢春余政炎
Owner 浙江大桥油漆有限公司
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