Efficient mirror plane flatting agent for powder paint, preparation method and application

A technology of powder coating and leveling agent, applied in the direction of coating, can solve problems such as poor resin compatibility, and achieve the effect of improving compatibility, convenient use and improving quality level

Inactive Publication Date: 2015-12-02
TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of existing leveling agents and resins in powder coatings, such as poor compatibility, and to provide a high-efficiency mirror leveling agent for powder coatings by introducing benzene rings and hydroxyl groups to control the molecular weight and distribution. And the preparation method and application, the leveling agent can further optimize the leveling, anti-shrinkage and gloss enhancement of the leveling agent, improve the adhesion of the coating on the surface of the metal substrate, and the leveling agent can be applied to the preparation of powder In coatings, at the same time, the method is simple in process and convenient in operation, which improves work efficiency and improves the quality level of products

Method used

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  • Efficient mirror plane flatting agent for powder paint, preparation method and application
  • Efficient mirror plane flatting agent for powder paint, preparation method and application
  • Efficient mirror plane flatting agent for powder paint, preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0035] A high-efficiency mirror surface leveling agent for powder coatings, its raw material composition and quality are respectively:

[0036]

[0037] The preparation method of high-efficiency mirror surface leveling agent for above-mentioned powder coating, its steps are:

[0038] (1) Toluene with a total mass of 70-80% is sucked into the reaction kettle under negative pressure, and the temperature is raised and continuously stirred to a reflux state;

[0039] (2) Dissolve 90-99% of the total mass of azobisisobutyronitrile in 10-15% of the remaining total mass of toluene to obtain azobisisobutyronitrile mixture, and mix n-butyl acrylate, lauryl methacrylate, hydroxyl Mix the acrylate monomer and styrene evenly, add the azobisisobutyronitrile mixture and the reactant mixture prepared above dropwise to the reaction kettle under reflux, and finish dropping within 2-5 hours;

[0040] (3) Dissolve the remaining azobisisobutyronitrile in the remaining toluene to obtain azobis...

Embodiment 2

[0043] A high-efficiency mirror surface leveling agent for powder coatings, its raw material composition and quality are respectively:

[0044]

[0045] The preparation method of high-efficiency mirror surface leveling agent for above-mentioned powder coating, its steps are as follows:

[0046] (1) Toluene with a total mass of 70-80% is sucked into the reaction kettle under negative pressure, and the temperature is raised and continuously stirred to a reflux state;

[0047] (2) Dissolve 90-99% of the total mass of azobisisobutyronitrile in 10-15% of the remaining total mass of toluene to obtain azobisisobutyronitrile mixture, and mix n-butyl acrylate, lauryl methacrylate, hydroxyl Mix the acrylate monomer and styrene evenly, add the azobisisobutyronitrile mixture and the reactant mixture prepared above dropwise to the reaction kettle under reflux, and finish dropping within 2-5 hours;

[0048] The hydroxy acrylate monomer is one or more of hydroxyethyl acrylate, hydroxyethyl...

Embodiment 3

[0052] A high-efficiency mirror surface leveling agent for powder coatings, its raw material composition and quality are respectively:

[0053]

[0054] The preparation method of the high-efficiency mirror surface leveling agent for the above-mentioned powder coating, its steps are the same as in Example 1.

[0055] Practical application effect and test situation of leveling agent of the present invention:

[0056] 1, in order to check the actual application effect of the present invention, first the leveling agent of the present invention is mixed evenly with fumed silicon dioxide, and the specific operation is: take by weighing 90g of the leveling agent obtained in Examples 1, 2, and 3, and add it to 40g In fumed silica, mix and disperse at high speed in a high-speed crushing tank for 2 minutes after stirring evenly. Leveling agent 2, leveling agent 3. Then according to the general formula, this solid leveling agent 1,2,3 is added in the powder coating, make formula 1, ...

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Abstract

The invention relates to an efficient mirror plane flatting agent for powder paint, an preparation method and an application. The efficient mirror plane flatting agent is prepared from, by mass, 600-800 parts of acrylic acid butyl ester, 100-360 parts of lauryl methacrylate, 20-50 parts of hydroxyl acrylate monomers, 20-50 parts of styrene, 10-25 parts of azodiisobutyronitrile and 900-1500 parts of methylbenzene. The number-average molecular weight Mn of the prepared flatting agent is 6000-7000, the molecular weight distribution PDI is 1.5-2.8, and the flatting agent can be prepared into a solid state through gas-phase silicon oxide adsorption in the later period. The flatting agent is mainly applied to the powder paint, hydroxyl polar groups and benzene rings are introduced in the flatting agent, therefore, the compatibility of the flatting agent and resin in the powder paint and the wettability of the flatting agent for substrates can be effectively facilitated, and then a coating can achieve the excellent flatting, shrinkage cavity resisting and brightening effects; in addition, the Mn of the flatting agent is 6000-7000, the PDI is 1.5-2.8, and therefore the flatting, shrinkage cavity resisting and brightening effects of the coating can be further optimized; furthermore, the polar group hydroxyl is introduced, and therefore the adhesive force of the coating on the metal substrates can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and relates to powder coating additives, in particular to a high-efficiency mirror surface leveling agent for powder coatings, a preparation method and application. Background technique [0002] During the high-temperature curing of powder coatings, due to the uneven surface tension of the coating, the components with high viscosity and low surface tension sink to the middle of the vortex, and the components with low viscosity and high surface tension rise to the periphery of the vortex, thus forming orange peel. And the low surface tension points will spread quickly, while the rest of the fluid cannot spread quickly due to the resistance of viscosity, thus forming shrinkage cavities. [0003] Leveling agent can effectively reduce the surface tension of powder coatings and improve the viscosity of the coating. The leveling agent can form a layer of leveling agent molecular layer with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/28C08F212/08C09D7/06C09D7/47
Inventor 曹雨张海瑞赵金祥
Owner TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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