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Preparation method of epoxy/polyester powdery paint which contains glass fiber and possesses self-healing capacity

A technology of glass fiber and epoxy, applied in the direction of powder coating, polyester coating, epoxy resin coating, etc., can solve the problems of short life and high maintenance cost

Inactive Publication Date: 2019-11-19
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, even for epoxy / polyester powder coatings, it is difficult not to face the harsh conditions imposed by the environment such as light and humidity or man-made damage during outdoor use, which leads to the use of coatings with shorter life and higher maintenance costs. Problem, many people also try to improve the performance of the coating by changing the polyester structure (such as preparing semi-crystalline polyester or hyperbranched polyester) or preparing composite epoxy / polyester powder coatings based on bio-based fiber materials , to prolong life and reduce the possibility of being damaged by erosion

Method used

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  • Preparation method of epoxy/polyester powdery paint which contains glass fiber and possesses self-healing capacity
  • Preparation method of epoxy/polyester powdery paint which contains glass fiber and possesses self-healing capacity
  • Preparation method of epoxy/polyester powdery paint which contains glass fiber and possesses self-healing capacity

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: a kind of epoxy / polyester composite powder coating that has self-healing ability and contains glass fiber, it is characterized in that preparation method comprises the following steps:

[0024] 1) Ingredients pre-mixed

[0025] Put each component into the high-speed pulverizer for pre-mixing according to the following ratio:

[0026] Carboxyl-terminated polyester (new Chinese method P5086AME) 165 parts

[0027] 30 parts of homemade unsaturated polyester

[0028] E12 bisphenol A glycidyl ether epoxy resin (Anhui Shanfu 604U) 200 parts

[0029] 30 parts glass fiber

[0030] Dicumyl peroxide (DCP) 0.03 parts by weight

[0031] 0.03 parts by weight of ethyl triphenylphosphine bromide

[0032] Titanium dioxide 50 parts

[0033] Barium sulfate 50 parts

[0034] Leveling agent 4 to 5 parts

[0035] Benzoin 1.5~2 parts

[0036] 701B 4~6 copies

[0037] Polyethylene wax (Nanjing Tianshi New Material Technology Co., Ltd.) 15 parts

[0038] PTFE wax (Nanji...

Embodiment 2

[0049] Embodiment 2: a kind of epoxy / polyester composite powder coating that has self-healing ability and contains glass fiber, it is characterized in that preparation method comprises the following steps:

[0050] 1) Ingredients pre-mixed

[0051] Put each component into the high-speed pulverizer for pre-mixing according to the following ratio:

[0052] Carboxyl-terminated polyester (new Chinese method P5086AME) 175 parts

[0053] Homemade unsaturated polyester 25 parts

[0054] E12 bisphenol A glycidyl ether epoxy resin (Anhui Shanfu 604U) 200 parts

[0055] 35 parts glass fiber

[0056] Dicumyl peroxide (DCP) 0.03 parts by weight

[0057] 0.04 parts by weight of ethyl triphenylphosphine bromide

[0058] Titanium dioxide 60 parts

[0059] Barium sulfate 40 parts

[0060] Leveling agent 4 to 5 parts

[0061] Benzoin 1.5~2 parts

[0062] 701B 4~6 copies

[0063] Polyethylene wax (Nanjing Tianshi New Material Technology Co., Ltd.) 15 parts

[0064] PTFE wax (Nanjing ...

Embodiment 3

[0075] Embodiment 3: a kind of epoxy / polyester composite powder coating that has self-healing ability and contains glass fiber, it is characterized in that preparation method comprises the following steps:

[0076] 1) Ingredients pre-mixed

[0077] Put each component into the high-speed pulverizer for pre-mixing according to the following ratio:

[0078] Carboxyl-terminated polyester (new Chinese method P5086AME) 180 parts

[0079] Homemade unsaturated polyester 25 parts

[0080] E12 bisphenol A glycidyl ether epoxy resin (Anhui Shanfu 604U) 200 parts

[0081] 30 parts glass fiber

[0082] Dicumyl peroxide (DCP) 0.03 parts by weight

[0083] 0.04 parts by weight of ethyl triphenylphosphine bromide

[0084] Titanium dioxide 60 parts

[0085] Barium sulfate 40 parts

[0086] Leveling agent 4 to 5 parts

[0087] Benzoin 1.5~2 parts

[0088] 701B 4~6 copies

[0089] Polyethylene wax (Nanjing Tianshi New Material Technology Co., Ltd.) 15 parts

[0090] PTFE wax (Nanjing ...

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Abstract

The invention relates to a preparation method of an epoxy / polyester powdery paint which contains glass fiber and possesses self-healing capacity. According to the preparation method, epoxy / saturationpolyester / nonsaturated polyester multiple crosslinking and filling material protection are adopted, so that the paint service life of the obtained powdery paint after construction is prolonged. The two main principles are that: a formed nonsaturated polyester / polyester / epoxy compact three-dimensional net structure is capable of protecting paint external layers from erosion and destroy by externalconditions, glass fiber is capable of enhancing matrix resin, and modifying nonsaturated polyester to form the reliable fiber reinforced composite material; the special surface performance of two waxcomponents is capable of promoting repairing when material surface destroy is caused, and self-healing is realized. The method is simple; using is convenient; the cost of large amount resin componentis low; additive using amount is extremely low; and the realizability is excellent.

Description

Technical field: [0001] The invention belongs to the field of polymer anti-corrosion coatings, and in particular relates to an epoxy / polyester which reduces the possibility of surface damage and corrosion through glass fiber reinforcement and modification, and which is mixed with a self-healing component of wax powder microcapsule structure Composite powder coating. Background technique: [0002] Recently, powder coatings have gradually replaced traditional solvent-based / water-soluble coatings in various fields of life such as furniture coating and outdoor decoration. Among the major types of powder coatings, the market share of epoxy / polyester hybrid powder coatings has basically maintained Above 35%, we can foresee its rich application scenarios and prospects. [0003] However, even for epoxy / polyester powder coatings, it is difficult not to face the harsh conditions imposed by the environment such as light and humidity or man-made damage during outdoor use, which leads t...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D167/00C09D167/06C09D5/03C09D7/61C09D7/65C08G59/68
CPCC09D163/00C09D5/033C08G59/688C08L2205/035C08K2003/2241C08K2003/3045C08L67/06C08L67/00C08L23/06C08L27/18C08K13/04C08K7/14C08K3/22C08K3/30C08K5/50
Inventor 任华顾婷婷孟祥康顾坚杨花安
Owner NANJING UNIV
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