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Vehicle finish with polymer/inorganic composite nano-powder and preparing method thereof

A technology of inorganic nanometer and automotive topcoat, which is applied in the direction of surface coating liquid devices, polyester coatings, coatings, etc., and can solve problems such as no discovery

Inactive Publication Date: 2005-06-29
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no discovery about the addition of nano-TiO 2 and nano-SiO 2 Reports on related patents of inorganic composite nanomaterials for automotive topcoats

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: The polymer / inorganic composite nano-powder automotive topcoat was prepared according to the following formula.

[0037] A component

[0038] Acrylic polyol acid resin 48.0kg

[0039] Titanium dioxide 18.0kg

[0040] Nano-TiO 2 Particle size is 30nm 1.0kg

[0041] nano-SiO 2 Particle size is 20nm 0.5kg

[0042] Nano ZnO particle size is 20nm 0.5kg

[0043] Silicon-based coupling agent 0.02kg

[0044] Auxiliary 1.23kg

[0045] Xylene 10.0kg

[0046] B component

[0047] Aromatic isocyanate prepolymer 11.0kg

[0048] Xylene 9.0kg

Embodiment 2

[0049] Embodiment 2: The polymer / inorganic composite nano-powder automotive topcoat was prepared according to the following formula.

[0050] A component

[0051] Amino resin 45.5kg

[0052] Titanium dioxide 18.5kg

[0053] Nano-TiO 2 Particle size is 30nm 0.5kg

[0054] nano-SiO 2 Particle size is 20nm 0.5kg

[0055] Nano ZnO particle size is 20nm 0.5kg

[0056] Phthalate coupling agent 0.01kg

[0057] Auxiliary 2.4kg

[0058] Butyl acetate 12.0kg

[0059] B component

[0060] Epoxy resin 10.0kg

[0061] Butyl acetate 10.0kg

Embodiment 3

[0062] Embodiment 3: The polymer / inorganic composite nano-powder automotive topcoat was prepared according to the following formula.

[0063] A component

[0064] Fiber resin 46.0kg

[0065] Titanium dioxide 18.0kg

[0066] Nano-TiO 2 Particle size is 30nm 2.0kg

[0067] nano-SiO 2 Particle size is 20nm 1.5kg

[0068] Aluminate coupling agent 0.04kg

[0069] Auxiliary 2.46kg

[0070] Thinner 10.0kg

[0071] B component

[0072] Aromatic isocyanate prepolymer 10.5kg

[0073] Ethylene glycol ether acetate 9.5kg

[0074] Preparation method of automobile topcoat of polymer / inorganic composite nano powder:

[0075] 1. Preparation of slurry

[0076] (1) The formula components in the above-mentioned embodiments are weighed separately, and a part of the polymer resin is added into a diluent and stirred in a mixing tank.

[0077] (2) Add nano powder, titanium dioxide and additives sequentially under stirring.

[0078] (3) Grind with a sand mill for 30 to 50 minutes.

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Abstract

A polymer / inorganic nanocomposite powder car topcoat, which is characterized in that a part of 45.0-55.0 parts of polymer resin is added into a mixing tank with 7.0-14.0 parts of diluent, and stirred and diluted. Add 0.5-4.5 parts of inorganic composite nano-powder, 15.0-25.0 parts of titanium dioxide and 1.25-3.75 parts of additives sequentially under stirring, grind with a sand mill for 30-50 minutes, and filter to obtain slurry. Then add the remaining amount of resin to the above slurry under stirring, add 8.0-15.0 parts of curing agent and 6.0-12.0 parts of diluent under high-speed stirring, adjust the viscosity to an appropriate level, and then spray to obtain smooth surface and anti-aging It can improve the anti-aging performance of the automobile topcoat by 10-50%, and increase the hardness by 5.0-15.0%.

Description

1. Technical field [0001] The invention relates to a polymer / inorganic composite nano-powder automobile topcoat and a preparation method thereof. 2. Background technology [0002] The car finish is the ultimate expression of the car's appearance. The smoothness and gloss of the car surface endow the car with high grade, stability, transparency and vividness, etc., which are directly related to the properties of the paint. Cars are exposed to the air for a long time, so the car topcoat must have excellent anti-aging performance, so as to be able to withstand the damage caused by natural changes such as long-term sunlight and wind and rain. It is inevitable that some collisions or friction events will occur during the driving of the car. Therefore, the automotive topcoat must also have excellent mechanical properties. [0003] Because nanoparticles have special properties such as surface effect, macroscopic quantum tunneling effect, interface effect and small size effect, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/14C09D133/00C09D167/00
Inventor 黄婉霞涂铭旌吴健春严家振张波
Owner SICHUAN UNIV