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Anti-aging and anti-yellowing solvent-free epoxy putty and preparation method thereof

An epoxy putty and anti-yellowing technology, applied in the field of coatings, can solve problems such as reducing weather resistance and mechanical properties, accelerating coating aging, affecting appearance quality, etc., achieving excellent workability, high aging resistance, and improving appearance quality. Effect

Inactive Publication Date: 2021-05-07
CARBON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of tertiary amine accelerators and nonylphenol in the amine curing agent, the chemical bonds of these two substances will be destroyed under heat, sunlight or strong ultraviolet rays, resulting in serious decomposition of nonylphenol and yellowing.
The appearance of this yellowing group will not only affect the appearance quality, but also make the putty coating more likely to absorb ultraviolet rays, accelerate the aging of the coating, and reduce its weather resistance and mechanical properties

Method used

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  • Anti-aging and anti-yellowing solvent-free epoxy putty and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An anti-aging and anti-yellowing solvent-free epoxy putty, including A component and B component, the mass ratio of A component to B component is 2:0.9;

[0027] Component A includes the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 20 parts of diluent, 4 parts of silane coupling agent, 4 parts of thixotropic agent, 118 parts of filler and 4 parts of titanium dioxide;

[0028] Component B includes the following raw materials in parts by weight: 100 parts of modified curing agent, 5 parts of thixotropic agent, 180 parts of filler, 0.02 part of carbon black and 0.5 part of titanium dioxide;

[0029] The modified curing agent adopts Rich Chemical’s 3327 curing agent, the active hydrogen equivalent is 96, and the solvent-free 100% solid content;

[0030] The epoxy value of bisphenol A epoxy resin is 0.48-0.54;

[0031] The diluent is one of n-butyl glycidyl ether or allyl glycidyl ether or difunctional diglycidyl ether or difunctional po...

Embodiment 2

[0039] An anti-aging and anti-yellowing solvent-free epoxy putty, including A component and B component, the mass ratio of A component to B component is 2:1;

[0040] Component A includes the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 30 parts of diluent, 5 parts of silane coupling agent, 5 parts of thixotropic agent, 200 parts of filler and 4 parts of titanium dioxide;

[0041] Component B includes the following raw materials in parts by weight: 100 parts of modified curing agent, 6 parts of thixotropic agent, 200 parts of filler, 0.03 part of carbon black and 0.7 part of titanium dioxide;

[0042] The modified curing agent adopts Rich Chemical’s 3327 curing agent, the active hydrogen equivalent is 96, and the solvent-free 100% solid content;

[0043] The epoxy value of bisphenol A epoxy resin is 0.48-0.54;

[0044] The diluent is one of n-butyl glycidyl ether or allyl glycidyl ether or difunctional diglycidyl ether or difunctional poly...

Embodiment 3

[0052] An anti-aging and anti-yellowing solvent-free epoxy putty, including A component and B component, the mass ratio of A component to B component is 2:1.1;

[0053] Component A includes the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 35 parts of diluent, 7 parts of silane coupling agent, 7 parts of thixotropic agent, 250 parts of filler and 6 parts of titanium dioxide;

[0054] Component B includes the following raw materials in parts by weight: 100 parts of modified curing agent, 7 parts of thixotropic agent, 250 parts of filler, 0.04 part of carbon black and 0.8 part of titanium dioxide;

[0055] The modified curing agent adopts Rich Chemical’s 3327 curing agent, the active hydrogen equivalent is 96, and the solvent-free 100% solid content;

[0056] The epoxy value of bisphenol A epoxy resin is 0.48-0.54;

[0057] The diluent is one of n-butyl glycidyl ether or allyl glycidyl ether or difunctional diglycidyl ether or difunctional po...

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Abstract

The invention discloses anti-aging and anti-yellowing solvent-free epoxy putty and a preparation method thereof. The epoxy putty comprises a component A and a component B. The component A is composed of bisphenol A epoxy resin, a diluent, a silane coupling agent, a thixotropic agent, filler and titanium dioxide. The component B is prepared from a modified curing agent, a thixotropic agent, filler, carbon black and titanium dioxide; the component A and the component B are used according to the mass ratio of 2: (0.9-1.1), and the epoxy putty is obtained. The anti-aging and anti-yellowing solvent-free type epoxy putty is environment-friendly, non-toxic and low in VOC, has super-strong bonding strength with a concrete base material, is high in anti-aging performance, does not have a yellowing phenomenon under long-term ultraviolet irradiation, and can meet the corrosion prevention and decoration requirements of concrete infrastructures.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an aging-resistant and yellowing-resistant solvent-free epoxy putty and a preparation method thereof. Background technique [0002] In recent years, with the development of the country, concrete bridges or other concrete infrastructures have increased significantly, but these concrete structures have been in a natural weathering environment for a long time, and are extremely vulnerable to environmental erosion, causing corrosion of concrete structures and affecting Structural stability and service life, but also brought a lot of economic losses. Therefore, it is necessary to use anti-corrosion coating technology to prolong the service life of these building facilities. [0003] The concrete surface has many holes and poor flatness, so a composite coating is usually used to achieve the purpose of protection. The relatively large and essential filling material in the composite c...

Claims

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Application Information

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IPC IPC(8): C09D5/34C09D163/02C08G59/40
CPCC08G59/40C09D5/34C09D163/00
Inventor 李如意罗仕刚薛雪雪周洪芝宋少波冯鑫
Owner CARBON TECH CO LTD
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