Nano composite modifying agent for improving weathering resistance performance powder paint and preparation method thereof

A powder coating and nano-composite technology, which is applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problem that the amount of leveling agent is easy to float to the surface of the coating film, so as to improve the anti-ultraviolet aging performance, Improved leveling and excellent cost performance

Inactive Publication Date: 2009-02-11
CHENGDU FEIYA POWDER COATINGS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is characterized by using the leveling agent for powder coating as the carrier, compounding organic ultraviolet absorbers, antioxidants or free radical scavengers with inorganic nano-powders, giving full play to the synergy

Method used

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  • Nano composite modifying agent for improving weathering resistance performance powder paint and preparation method thereof
  • Nano composite modifying agent for improving weathering resistance performance powder paint and preparation method thereof
  • Nano composite modifying agent for improving weathering resistance performance powder paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Mix 2g of silane coupling agent with 1000g of absolute ethanol, heat to 80-100°C and stir evenly, then add nano-TiO 2 100g of powder was stirred at high speed for 2.5 hours, then the mixture was suction filtered, dried at 110°C, ground and sieved. Nano-TiO modified by silane coupling agent 2 Mix 100g of powder, 25g of organic ultraviolet light absorber, and 100g of leveling agent in a high-speed mixer, add 200g of acrylic resin to the mixture, continue to mix at high speed, and finally convey the mixed material to the twin-screw extruder with a feeder In the process, melt mixing, extrusion, pulverization and granulation are carried out.

Embodiment 2

[0046] Mix 3g of aluminate coupling agent with 1500g of absolute ethanol, heat to 80-100°C and stir evenly, then add nano-TiO 2 and nano-SiO 2 (The ratio of the two is 4:1) 120g of composite powder, stirred at high speed for 3 hours, then the mixture was suction filtered, dried at 110°C, ground and sieved. Put 120g of nano-composite powder modified by aluminate coupling agent, 40g of composite powder of organic ultraviolet light absorber and quencher (the ratio of the two is 1:1), and 160g of leveling agent in a high-speed mixer Mix evenly, add 320g of polyester resin to the mixture, continue to mix at high speed, and finally transport the mixed material to a twin-screw extruder with a feeder for melt mixing, extrusion, pulverization and granulation.

Embodiment 3

[0048] Mix 3g of titanate coupling agent with 1500g of absolute ethanol, heat to 80-100°C and stir evenly, then add nano-TiO 2 and nano-SiO 2 (The ratio of the two is 4:1) 120g of composite powder, stirred at high speed for 4 hours, then the mixture was suction filtered, dried at 110°C, ground and sieved. 120g of nanocomposite powder modified by titanate coupling agent, 60g of composite powder of organic ultraviolet light absorber, quencher and hindered amine light stabilizer (the ratio of the three is 1:1:1), flow 200g of the leveling agent is mixed uniformly in a high-speed mixer, and 400g of polyester resin is added to the mixture, and the high-speed mixing is continued. Finally, the mixed material is transported to a twin-screw extruder by a feeder, and melted, mixed, extruded and granulated.

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PUM

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Abstract

The invention provides a nanometer composite modifier used for improving the weatherability of a powder dye. The nanometer composite modifier consists of a flatting agent, inorganic nanometer powder, an organic anti-aging addition agent and a powder dope basic resin. The nanometer composite modifier fully exerts the collaborative anti-aging effect of the organic anti-aging addition agent and the inorganic nanometer powder as well as improves the problem that the flatting agent is over-added which is easy to float on the surface of a paint film. The invention also provides a preparation method of the modifier. The method is simple in technique and low in cost. The master batches of the modifier can be used in the powder dope to improve the property for resisting the aging of ultraviolet light of the powder dope to a great extent; the flatting property of the paint film of the powder dope is also improved.

Description

technical field [0001] The invention belongs to the field of powder coatings. In particular, it relates to a nanocomposite modifier for improving the weather resistance of powder coatings and a preparation method thereof. Background technique [0002] As a solvent-free coating, powder coating conforms to the internationally popular "four E" principles (economy, environmental protection, high efficiency, and excellent performance), and is welcomed by people. With the increasingly stringent requirements for environmental protection, powder coatings have developed rapidly due to their low pollution, high decorativeness, and good comprehensive performance, and are gradually replacing traditional solvent-based coatings. However, with the continuous development of the powder coating market, the market has also put forward many new requirements for it. Among them, weather resistance is an important index for outdoor powder coatings widely used in automobiles, steel products, cons...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D5/03C09D167/06C09D163/00C09D133/00C09D175/04
Inventor 徐良根黄婉霞郭刚施奇武王玉忠涂铭旌
Owner CHENGDU FEIYA POWDER COATINGS
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