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Building corrosion-resistant epoxy resin paint

An epoxy resin coating and epoxy resin technology, applied in the coating field, can solve the problems of difficulty in adapting to heavy anti-corrosion requirements in the construction field, poor heat and humidity resistance, and poor weather resistance, and achieve the problems of easy cracking, improved anti-corrosion performance, and increased flexibility. Effect

Inactive Publication Date: 2019-02-19
福州臻美网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for pure epoxy resin, its viscosity is relatively high, and it presents a three-dimensional network structure after curing, resulting in various disadvantages, such as poor heat and humidity resistance, poor weather resistance and high brittleness, etc., and it is difficult to meet the heavy anti-corrosion requirements in the construction field. Therefore, it is imperative to improve the anticorrosion performance of epoxy resin

Method used

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  • Building corrosion-resistant epoxy resin paint

Examples

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Comparison scheme
Effect test

Embodiment 1

[0047] A kind of corrosion-resistant epoxy resin coating for building, the weight percent of each raw material is: 45% of corrosion-resistant epoxy resin, 12% of titanium dioxide, 15% of composite ultraviolet shielding agent, 5% of curing agent, 0.5% of leveling agent , defoamer 0.3%, cyclohexanone 22.2%;

[0048] The preparation method of described corrosion-resistant epoxy resin specifically comprises the following steps:

[0049] S1. Synthesis of modified silicone resin

[0050] Add 100 mol of amino silicone resin 1, 95 mol of modifier maleic anhydride 2 and 1.5 L of solvent N,N-dimethylformamide into the reaction flask, and heat it to 95°C for 40 min in a nitrogen atmosphere. Next, 2 mol of acid catalyst sulfamic acid was added, the temperature was raised to 135° C., and the ring closure and dehydration reaction was carried out for 3 hours to obtain the modified silicone resin 3;

[0051] The reaction formula is as follows:

[0052]

[0053] S2. Compounding of modifi...

Embodiment 2

[0066] A kind of corrosion-resistant epoxy resin coating for building, the weight percent of each raw material is: 60% of corrosion-resistant epoxy resin, 10% of titanium dioxide, 10% of composite ultraviolet shielding agent, 3% of curing agent, 1.2% of leveling agent , defoamer 0.8%, cyclohexanone 15%;

[0067] The preparation method of described corrosion-resistant epoxy resin is with embodiment 1;

[0068] The preparation method of described composite ultraviolet shielding agent is the same as embodiment 1.

Embodiment 3

[0070] A kind of corrosion-resistant epoxy resin coating for building, the weight percentage of each raw material is: 55% of corrosion-resistant epoxy resin, 14% of titanium dioxide, 13% of composite ultraviolet shielding agent, 6.5% of curing agent, 1% of leveling agent , defoamer 0.5%, cyclohexanone 10%;

[0071] The preparation method of described corrosion-resistant epoxy resin is with embodiment 1;

[0072] The preparation method of described composite ultraviolet shielding agent is the same as embodiment 1.

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Abstract

The invention discloses a building corrosion-resistant epoxy resin paint. The building corrosion-resistant epoxy resin paint is composed of raw materials including, by weight part, 45-60% of corrosion-resistant epoxy resin, 10-15% of titanium dioxide, 10-15% of compound ultraviolet shielding agent, 3-8% of curing agent, 0.5-1.2% of flatting agent, 0.3-0.8% of defoamer and solvent as balance. Preparation of the building corrosion-resistant epoxy resin paint comprises, firstly, modifying amino silicone resin, subjecting amino groups of modified organic silicone resin to ring-opening polymerization with epoxy groups of epoxy resin, and then oxidizing double bonds of the compounded epoxy resin into alkylene oxide to further increase the bonding strength and the anti-ageing performance of the epoxy resin. By introducing modified organic silicone lipid chains, an epoxy coating can be low in double-layer capacitance and high in reaction resistance and greatly improve the corrosion resistanceof the building corrosion-resistant epoxy resin paint.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a corrosion-resistant epoxy resin coating used in buildings. Background technique [0002] Buildings are exposed to the outdoors for a long time, subject to rain erosion and sun exposure, and are easily corroded and aged. Corrosion, as one of the main forms of failure of building materials, has caused great harm to the national economy. Coating organic coatings on the surface of buildings is a The most economical and efficient method at present. Epoxy resin has many advantages, such as: superior mechanical strength, thermal stability, adhesion, insulation and corrosion resistance, and is the most widely used resin in the field of corrosion protection. However, for pure epoxy resin, its viscosity is relatively high, and it presents a three-dimensional network structure after curing, resulting in various disadvantages, such as poor heat and humidity resistance, poor weather resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/48C09D7/61C08G59/14
CPCC08G59/1477C08K2003/2213C09D5/08C09D7/48C09D7/61C09D163/00C08K3/22C08K3/346C08K9/00C08K9/12C08K13/06
Inventor 不公告发明人
Owner 福州臻美网络科技有限公司
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