Super-leveling powder coating and preparation method thereof

A powder coating and leveling technology, which is applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of general leveling and lower coating film quality, reduce production costs, improve mechanical properties, and improve The effect of surface hardness

Pending Publication Date: 2021-11-26
浙江绿环新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The powder coating prepared by the present invention has good high and low temperature resistance, weather resistance, electrical insulation, chemical stability and water resistance"; although it has good weather resistance, its leveling property is general, resulting in The quality is reduced and cannot meet the needs of some occasions in the market. Therefore, it is necessary to improve the performance of existing powder coatings

Method used

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  • Super-leveling powder coating and preparation method thereof
  • Super-leveling powder coating and preparation method thereof
  • Super-leveling powder coating and preparation method thereof

Examples

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preparation example Construction

[0043] The preparation method of described modified polyester resin comprises the following steps:

[0044] (1) Add ethylene glycol, diethylene glycol, pentylene glycol, and monobutyltin oxide to the reaction kettle in sequence, then adjust the temperature to 118°C, and keep stirring for 30 minutes;

[0045] (2) Add terephthalic acid and maleic acid to the reaction kettle in step (1) and add them to the reaction kettle in turn, then adjust the temperature value to 235° C., and keep stirring for 40 minutes;

[0046] (3) Add antioxidant TPPi to the reactor in step (3), stir for 10min;

[0047] (4) Sampling the reaction kettle in step (4) when the acid value reaches 16mgKOH / g, lower the temperature to 180°C, then add polybasic acid, continue heating to 235°C, keep warm for 5 hours, and carry out after the resin is clarified Sampling Jiangce acid value reaches 60mgKOH / g, carry out vacuum polycondensation, the acid value reaches 52mgKOH, and then discharge at 200 ° C to obtain.

...

Embodiment 1

[0070] A super-leveling powder coating, made of the following components in parts by weight: modified polyester resin 120, titanium dioxide 10, acrylic resin 18, nano-silica 12, epoxy resin 11, composite leveling agent 3, Curing agent 6, ceramic micropowder 1, polytetrafluoroethylene micropowder wax 6, auxiliary agent 12. The 150°C melt viscosity of the epoxy resin is 4500 cps. The preparation method of described modified polyester resin comprises the following steps:

[0071] (1) Add ethylene glycol, diethylene glycol, pentylene glycol, and monobutyltin oxide to the reaction kettle in sequence, then adjust the temperature to 118°C, and keep stirring for 30 minutes;

[0072] (2) Add terephthalic acid and maleic acid to the reaction kettle in step (1) and add them to the reaction kettle in turn, then adjust the temperature value to 235° C., and keep stirring for 40 minutes;

[0073] (3) Add antioxidant TPPi to the reactor in step (3), stir for 10min;

[0074] (4) Sampling in...

Embodiment 2

[0081] A super-leveling powder coating, made of the following components in parts by weight: modified polyester resin 120, titanium dioxide 10, acrylic resin 18, nano-silica 12, epoxy resin 11, composite leveling agent 3.2, Curing agent 6, ceramic micropowder 1, polytetrafluoroethylene micropowder wax 6, auxiliary agent 120. The 150°C melt viscosity of the epoxy resin is 4500 cps. The preparation method of described modified polyester resin comprises the following steps:

[0082] (1) Add ethylene glycol, diethylene glycol, pentylene glycol, and monobutyltin oxide to the reaction kettle in sequence, then adjust the temperature to 118°C, and keep stirring for 30 minutes;

[0083] (2) Add terephthalic acid and maleic acid to the reaction kettle in step (1) and add them to the reaction kettle in turn, then adjust the temperature value to 235° C., and keep stirring for 40 minutes;

[0084] (3) Add antioxidant TPPi to the reactor in step (3), stir for 10min;

[0085] (4) Sampling...

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Abstract

The invention discloses a super-leveling powder coating and a preparation method thereof. The powder coating relates to the technical field of powder coating production, and is prepared from the following components: modified polyester resin, titanium dioxide, acrylic resin, nano silicon dioxide, epoxy resin, a composite leveling agent, a curing agent, ceramic micro powder, polytetrafluoroethylene micro powder wax and an auxiliary agent. The invention provides a super-leveling powder coating and a preparation method thereof. The powder coating prepared by the invention has excellent comprehensive performance, high coating surface hardness, good leveling property and wide application.

Description

technical field [0001] The invention belongs to the technical field of powder coating production, in particular to a super-leveling powder coating and a preparation method thereof. Background technique [0002] Powder coating is a solvent-free, non-volatile solid coating, which has the advantages of harmless environmental protection, high efficiency and low price. In recent years, with the continuous increase of domestic and foreign environmental protection and the continuous improvement of users' environmental protection awareness, the demand for powder coatings in various fields has become more and more urgent. Powder coatings have been widely used in automobiles, pipelines, home appliances, furniture, aluminum profiles and other fields. [0003] Prior art "application number CN 111748257 A, powder coating, the present invention discloses a kind of powder coating. Described powder coating is made up of following component by weight percentage: barium sulfate 15-30%; Isocy...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D133/00C09D163/00C09D7/61C09D7/65C09D5/03C09D7/47
CPCC09D167/06C09D5/033C08K2201/011C08L33/00C08L63/00C08L27/18C08L35/04C08K3/36C08K3/013
Inventor 阮惬冰黄心一李俊杰
Owner 浙江绿环新材料科技有限公司
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