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Water-based organic silicon-modified epoxy resin and preparation method thereof

An epoxy resin and organosilicon technology, applied in the field of water-based organosilicon modified epoxy resin and its preparation, can solve the problem of unsatisfactory epoxy resin modification effect, unsustainable epoxy resin, poor weather resistance and toughness, etc. problems, to achieve the effect of easy control of technical parameters, improved weather resistance and toughness, and high production efficiency

Inactive Publication Date: 2013-12-25
GUANGZHOU GEMBOND CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the preparation of water-based silicone epoxy resin, the main focus is to introduce silicon into the epoxy resin by using the silane coupling agent containing monosilicon as the raw material. The silicon content introduced by this method is limited, and the modification effect on the epoxy resin is not ideal. , its weather resistance and toughness are poor
At the same time, due to the Si-O-CH in the silane coupling agent of monosilicon 3 Easy to hydrolyze, easy to produce gel, so that the modified epoxy resin cannot be stored for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A water-based silicone modified epoxy resin, prepared from the following raw materials in parts by weight:

[0032] Bisphenol A type epoxy resin: 100 parts of E-44 type epoxy resin,

[0033] Organic solvent: Ethylene glycol monomethyl ether and n-butanol are mixed in a mass ratio of 1:1, and 50 parts of the resulting mixed solution,

[0034] Acrylic acid 10 parts,

[0035] 10 parts of styrene,

[0036] 10 parts of γ-methacryloxypropyl tris(trimethylsiloxy)silane,

[0037] Initiator: 1 part of benzoyl peroxide.

[0038] The preparation method of above-mentioned waterborne organosilicon modified epoxy resin, comprises the steps:

[0039] (1) Dissolve 100 parts of E-44 epoxy resin in a mixture of 50 parts of ethylene glycol monomethyl ether and n-butanol (mass ratio 1:1) at 100 ° C, slowly add 10 parts of acrylic acid, 10 parts of benzene A mixture of ethylene, 10 parts of TRIS and 1 part of benzoyl peroxide was heated up to 120°C for copolymerization reaction for 2 h...

Embodiment 2

[0042] A water-based silicone modified epoxy resin, prepared from the following raw materials in parts by weight:

[0043] Bisphenol A type epoxy resin: 100 parts of E-20 type epoxy resin,

[0044] Organic solvent: 100 parts of 1-methoxy-2-ethanediol,

[0045] Acrylic: 50 parts,

[0046] 50 parts of styrene,

[0047] 80 parts of γ-methacryloxypropyl tris(trimethylsiloxy)silane,

[0048] Initiator 2 parts.

[0049] The preparation method of above-mentioned waterborne organosilicon modified epoxy resin, comprises the steps:

[0050] (1) Dissolve 100 parts of E-20 type epoxy resin in 100 parts of 1-methoxy-2-ethylene glycol at 100°C, slowly add 50 parts of acrylic acid, 50 parts of styrene, 80 parts of TRIS and 2 parts The temperature of the benzoyl peroxide mixture was raised to 120°C for a copolymerization reaction for 3 hours;

[0051] (2) After the organic solvent 1-methoxy-2-ethylene glycol and unreacted monomers are removed by pressure distillation, neutralize with et...

Embodiment 3

[0053] A water-based silicone modified epoxy resin, prepared from the following raw materials in parts by weight:

[0054] Bisphenol A type epoxy resin: 100 parts of E-10 type epoxy resin,

[0055] Organic solvent: 200 parts of 1-methoxy-2-ethanediol,

[0056] Acrylic: 50 parts,

[0057] Styrene: 50 parts,

[0058] γ-methacryloxypropyl tris(trimethylsiloxy)silane: 80 parts,

[0059] Initiator: 5 parts of benzoyl peroxide.

[0060] The preparation method of above-mentioned waterborne organosilicon modified epoxy resin, comprises the steps:

[0061] (1) Dissolve 100 parts of E-10 type epoxy resin in 200 parts of 1-methoxy-2-ethylene glycol at 100°C, slowly add 50 parts of acrylic acid, 50 parts of styrene, 80 parts of TRIS and 5 parts The mixture of benzoyl peroxide was raised to 120°C for copolymerization reaction for 4 hours;

[0062] (2) After removing the organic solvent 1-methoxy-2-ethylene glycol and unreacted monomers by pressure distillation, add ammonia water to n...

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Abstract

The invention discloses a water-based organic silicon-modified epoxy resin and a preparation method thereof. The epoxy resin is prepared from the following raw materials in parts by weight: 100 parts of bisphenol A-type epoxy resin, 50 to 200 parts of organic solvent, 10 to 50 parts of acrylic monomer, 0 to 50 parts of styrene, 10 to 80 parts of gamma-methacryloxy propyl tris(trimethylsiloxy)silane, and 1 to 5 parts of initiator. The preparation method comprises the following steps: dissolving the bisphenol A-type epoxy resin in the organic solvent, performing copolymerization with the acrylic monomer, the styrene and the gamma-methacryloxy propyl tris(trimethylsiloxy)silane under the action of the initiator, distilling the copolymer under a reduced pressure, and adjusting the pH value to be 7-8 to obtain the water-based organic silicon-modified epoxy resin. In the epoxy resin disclosed by the invention, the silicone content of organic silicon monomers is increased; the toughness and weather resistance of the prepared epoxy resin are remarkably improved; the preparation method is simple and is easy to operate, does not have special requirements on production equipment, and has high production efficiency; each technical parameter is convenient to control.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a water-based organosilicon-modified epoxy resin and a preparation method thereof. Background technique [0002] Epoxy resin has excellent adhesion, excellent electrical insulation, good mechanical properties, good corrosion resistance and chemical resistance, but its weather resistance, heat resistance and impact resistance are not ideal. To some extent, it limits its wider application. [0003] Silicone has excellent properties such as high and low temperature resistance, weather resistance, corrosion resistance, electrical insulation, oxidation resistance stability, and low surface tension. However, silicone resins have disadvantages such as poor mechanical properties, oil resistance, and poor resistance to organic solvents. Using the two together can improve some of their inherent shortcomings. [0004] At present, in the preparation of water-based silicone epoxy resin, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F230/08C08F212/08C08F220/06C08F220/14C08F220/18
Inventor 刘海峰哈成勇杨番张涛
Owner GUANGZHOU GEMBOND CHEM
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