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Novel silicon-modified epoxy composite coating

A composite coating and silica gel technology, applied in the coating field, can solve the problems of weak impact resistance, large internal stress, hard and brittle texture, etc., and achieve the effect of increasing service life, good impact resistance and good flexibility

Inactive Publication Date: 2015-09-30
ANQING LIANTAI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, pure epoxy resin has a three-dimensional network structure after curing, with high cross-linking density, large internal stress, hard and brittle texture, poor crack resistance, poor impact resistance and poor heat and humidity resistance, etc., resulting in cured rings. Oxygen resin coatings are poor in adhesion, hardness, flexibility, impact resistance, etc., which reduces the service life

Method used

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  • Novel silicon-modified epoxy composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A new type of silica gel modified epoxy composite coating, which is composed of the following components by weight: 8 parts of n-butanol solvent, 8 parts of xylene solvent, 0.5 parts of amino modified silica sol, 38 parts of epoxy resin, phosphoric acid 6 parts of zinc, 8 parts of mica powder, 1 part of aluminum tripolyphosphate, 18 parts of iron oxide red, 4 parts of glass flakes, and 40 parts of polyamide resin.

[0016] A preparation method of a new type of silica gel modified epoxy composite coating includes the following steps:

[0017] (1) First, put the n-butanol solvent and xylene solvent into the paint mixing tank in sequence, and stir evenly with a mixer to obtain a mixed solvent;

[0018] (2) Put amino-modified silica gel and epoxy resin in the mixed solvent obtained in step (1), heat to 85°C for reflux, and control the reaction time to 1.8h;

[0019] (3) After the reaction is completed, add zinc phosphate, mica powder, aluminum tripolyphosphate, iron oxide red, and ...

Embodiment 2

[0022] A new type of silica gel modified epoxy composite coating, the coating is composed of the following components by weight: 9 parts of n-butanol solvent, 9 parts of xylene solvent, 1.3 parts of amino modified silica sol, 41 parts of epoxy resin, phosphoric acid 8 parts of zinc, 10 parts of mica powder, 2 parts of aluminum tripolyphosphate, 21 parts of iron oxide red, 5 parts of glass flakes, and 42 parts of polyamide resin.

[0023] A preparation method of a new type of silica gel modified epoxy composite coating includes the following steps:

[0024] (1) First, put the n-butanol solvent and xylene solvent into the paint mixing tank in sequence, and stir evenly with a mixer to obtain a mixed solvent;

[0025] (2) Put amino-modified silica gel and epoxy resin in the mixed solvent obtained in step (1), heat to 90°C for reflux, and control the reaction time to 2.0h;

[0026] (3) After the reaction is completed, add zinc phosphate, mica powder, aluminum tripolyphosphate, iron oxide r...

Embodiment 3

[0029] A new type of silica gel modified epoxy composite coating, the coating is composed of the following components by weight: 10 parts of n-butanol solvent, 10 parts of xylene solvent, 2 parts of amino modified silica sol, 44 parts of epoxy resin, phosphoric acid 10 parts of zinc, 12 parts of mica powder, 3 parts of aluminum tripolyphosphate, 24 parts of iron oxide red, 6 parts of glass flakes, and 44 parts of polyamide resin.

[0030] A preparation method of a new type of silica gel modified epoxy composite coating includes the following steps:

[0031] (1) First, put the n-butanol solvent and xylene solvent into the paint mixing tank in sequence, and stir evenly with a mixer to obtain a mixed solvent;

[0032] (2) Put amino-modified silica gel and epoxy resin in the mixed solvent obtained in step (1), heat to 95°C for reflux, and control the reaction time to 2.2h;

[0033] (3) After the reaction is completed, add zinc phosphate, mica powder, aluminum tripolyphosphate, iron oxide ...

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Abstract

The invention relates to a novel silicon-modified epoxy composite coating. The novel silicon-modified epoxy composite coating comprises, by weight, 8-10 parts of an n-butanol solvent, 8-10 parts of a xylene solvent, 0.5-2 parts of amido-modified silicone sol, 38-44 parts of epoxy resin, 6-10 parts of zinc phosphate, 8-12 parts of mica powder, 1-3 parts of aluminium triphosphate, 18-24 parts of iron oxide red, 4-6 parts of glass flakes and 40-44 parts of polyamide resin. The novel silicon-modified epoxy composite coating is prepared by mixing the epoxy resin into the amido-modified silicone sol according to the rational mixing ratio of the amido-modified silicone sol to the epoxy resin; the prepared novel silicon-modified epoxy composite coating has the advantages of high hardness, good adhesive force, good suppleness, good impact resistance and the like; the defects that an existing cured epoxy resin coating is poor in adhesive force, hardness, suppleness, impact resistance and other performance, and the service life of the coating is prolonged.

Description

Technical field [0001] The invention relates to a coating, in particular to a novel silica gel modified epoxy composite coating. Background technique [0002] Epoxy resin has good physical and chemical properties. It has excellent bonding strength to the surface of metal and non-metal materials, good dielectric properties, low variable shrinkage, good product dimensional stability, high hardness, and relatively flexible Good, stable to alkali and most solvents, so it is widely used in various sectors of national defense and national economy for casting, dipping, laminating, adhesive, coating and other purposes. [0003] However, the pure epoxy resin has a three-dimensional network structure after curing, with high cross-linking density, large internal stress, hard and brittle texture, poor crack resistance, poor impact resistance, and poor moisture and heat resistance, resulting in the cured ring Oxygen resin coating has poor adhesion, hardness, flexibility, impact resistance and ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12
Inventor 杨金英胡郅钰王成军
Owner ANQING LIANTAI ELECTRONICS TECH
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