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Nanometer powder coating and preparation method thereof

A nano-powder, powder coating technology, applied in powder coatings, polyester coatings, coatings and other directions to achieve the effect of improving workability

Inactive Publication Date: 2013-09-25
JIANGSU HUAGUANG POWDER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary powder coatings used in the construction industry have problems related to weather resistance, construction and mechanical properties. Therefore, it is a current research problem to provide a powder coating with good weather resistance, excellent construction performance and good mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A kind of nano powder coating, it is characterized in that: the preferred content percentage of each component of this powder coating is as follows: polyester resin 50%; Curing agent 3.7%; Pigment 20%; Nano TiO 2 Leveling agent: 6%; Benzoin: 0.5%; Precipitated barium sulfate: 18.8%; The preparation method of this nanometer powder coating comprises the steps:

[0014] a. According to the percentage by weight, polyester resin; curing agent %; colorant; nano-TiO2; leveling agent;

[0015] b. Take the homogeneously mixed material in step a and put it into a screw extruder to fully melt and knead, then extrude, tablet, and pulverize to obtain the finished product.

Embodiment 2

[0017] A nano-powder coating, characterized in that: the preferred content percentage of each component of the powder coating is as follows: polyester resin 52%; curing agent 3.9%; colorant 20%; nano-TiO2: 2%; leveling agent: 6% ; Benzoin: 0.5%; Precipitated barium sulfate: 15.6%; The preparation method of the nano powder coating is the same as in Example 1.

Embodiment 3

[0019] A kind of nanometer powder coating, it is characterized in that: the preferred content percentage of each component of this powder coating is as follows: polyester resin 55%; Curing agent 4.2%; Pigment 22%; Nano TiO 2 Leveling agent: 8%; Benzoin: 1%; Precipitated barium sulfate: 6.8%; The preparation method of this nanometer powder coating is the same as embodiment one.

[0020] Spray the epoxy powder products obtained in the above examples on metal workpieces, the curing condition is 200°C / 10min, and the test results are as follows: the D50 particle size of the powder coating is 38-42 μm; the impact resistance of the cured coating film (GB / T1732-1993): 50cm positive and recoil passage; heat resistance: 150℃, 35h baking without loss of gloss and color change; salt spray test 500h (GB / T1771-1991): no foaming, no cracking and no peeling ; Adhesion (1mm cross-cut method, GB / T9286-1998): Grade 0; Pencil hardness (GB / T6739-1996): 3H.

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Abstract

The invention relates to a nanometer powder coating and a preparation method thereof. The nanometer powder coating comprises the following components in percentage by weight: 50%-55% of polyester resin, 3.7%-4.2% of curing agent, 20%-24% of pigment, 1%-3% of nanometer TiO2, 6%-8% of flatting agent, 0.5%-1% of benzoin and 5%-19% of precipitated barium sulfate. As the nanometer rutile TiO2 processed by a coupling agent is adopted in the formula of the coating, the application property, weather resistance and mechanical property of the nanometer powder coating are greatly improved, and therefore, the nanometer powder coating is suitable for large-scale popularization and application by building coating producers.

Description

technical field [0001] The invention relates to a nanometer powder coating and a preparation method thereof. Background technique [0002] Powder coating is widely used in the surface coating of various metal parts due to its environmental protection and economic superiority. With the development of economy and society, people's concept of environmental protection is getting deeper and deeper, and the application range of powder coatings is also increasing. Common powder coatings used in the construction industry have problems related to weather resistance, workability and mechanical properties. Therefore, it is a current research problem to provide a powder coating with good weather resistance, excellent construction performance and good mechanical properties. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a nano-powder coating with good weather resistance, excellent construction performance and good mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D7/12C09D5/03
Inventor 潘建良
Owner JIANGSU HUAGUANG POWDER