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Preparation method of automobile waterproof coating

A technology for waterproof coatings and automobiles, applied in the field of coatings, can solve problems such as toxicity, and achieve good tensile properties and waterproof effects

Inactive Publication Date: 2018-07-20
SUZHOU NIUDONG PRECISION MFG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using this kind of paint, it is generally diluted with organic solvents such as toluene and xylene, so it also contains toxicity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method for automobile waterproof paint, comprising the following steps:

[0019] Step 1, stirring and mixing 15 parts by weight of acrylic resin, 2 parts of methyl methacrylate, 5 parts of chlorinated polyethylene and 1 part of polyacrylamide, the stirring speed is 180 rpm, and the stirring time is 10 minutes. to obtain mixture one;

[0020] Step 2, add 3 parts of hexamethylene diisocyanate, 5 parts of ethylene glycol and 1 part of dibutyltin dilaurate to mixture 1, heat to 60°C under a vacuum condition of 0.05MPa, and stir for 150 minutes, The stirring speed is 140 rpm, and the mixture 2 is obtained;

[0021] Step 3, add 2 parts of butyl acetate, 4 parts of nano-titanium dioxide and 1 part of antioxidant 1010 to mixture 2, stir and mix to obtain mixture 3;

[0022] In step 4, the mixture 3 is ball-milled by a ball mill, and the particle size after ball milling is less than 50 μm to obtain an automobile waterproof coating.

Embodiment 2

[0024] A preparation method for automobile waterproof paint, comprising the following steps:

[0025] Step 1, 17 parts by weight of acrylic resin, 3 parts of methyl methacrylate, 6 parts of chlorinated polyethylene and 1-2 parts of polyacrylamide are stirred and mixed, the stirring speed is 185 rpm, and the stirring time is 12 Minutes to obtain mixture one;

[0026] Step 2, add 4 parts of hexamethylene diisocyanate, 6 parts of ethylene glycol and 2 parts of dibutyltin dilaurate to mixture 1, heat to 63°C under a vacuum condition of 0.06MPa, and stir for 160 minutes, The stirring speed is 146 rpm, and the mixture 2 is obtained;

[0027] Step 3, add 3 parts of butyl acetate, 5 parts of nano-titanium dioxide and 2 parts of antioxidant 1010 in mixture 2, stir and mix to obtain mixture 3;

[0028] In step 4, the mixture 3 is ball-milled by a ball mill, and the particle size after ball milling is less than 50 μm to obtain an automobile waterproof coating.

Embodiment 3

[0030] A preparation method for automobile waterproof paint, comprising the following steps:

[0031] Step 1, stirring and mixing 18 parts by weight of acrylic resin, 4 parts of methyl methacrylate, 7 parts of chlorinated polyethylene and 2 parts of polyacrylamide, the stirring speed is 190 rpm, and the stirring time is 14 minutes. to obtain mixture one;

[0032] Step 2, add 6 parts of hexamethylene diisocyanate, 8 parts of ethylene glycol and 3 parts of dibutyltin dilaurate to mixture 1, heat to 66°C under a vacuum condition of 0.06MPa, and stir for 190 minutes, The stirring speed is 150 rev / min, and the mixture 2 is obtained;

[0033] Step 3, add 5 parts of butyl acetate, 7 parts of nano-titanium dioxide and 2 parts of antioxidant 1010 in mixture two, stir and mix to obtain mixture three;

[0034] In step 4, the mixture 3 is ball-milled by a ball mill, and the particle size after ball milling is less than 50 μm to obtain an automobile waterproof coating.

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PUM

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Abstract

The invention discloses a preparation method of an automobile waterproof coating; the preparation method comprises the steps: stirring and mixing acrylic resin, methyl methacrylate, chlorinated polyethylene and polyacrylamide, adding hexamethylene diisocyanate, ethylene glycol and dibutyltin dilaurate, heating and stirring in a vacuum condition, then adding butyl acetate, nanoparticles and an antioxidant, stirring and mixing, and carrying out ball milling by a ball mill, to obtain the automobile waterproof coating. The waterproof coating obtained by the method has good adhesion performance andwaterproof performance, and can be widely applied to the automobile field.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a preparation method of automobile waterproof coatings. Background technique [0002] The waterproof materials currently on the market are usually polyurethane waterproof coatings, which are generally made of polyurethane and coal tar as raw materials. The tar gas it volatilizes is highly toxic and not easy to remove, so it was banned in China in 2000. The polyurethane waterproof coating that is still on sale uses asphalt instead of coal tar as a raw material. However, when using this kind of paint, it is generally diluted with organic solvents such as toluene and xylene, so it also contains toxicity. When applied in the automotive field, there are better requirements for the corrosiveness and environmental protection performance of the coating. At the same time, the development of multifunctional coatings with protective effects has been a subject of continuous research by ...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D175/04C09D123/28C09D133/26C09D7/61
CPCC09D133/00C08K2003/2241C08K2201/011C08L2205/035C08L23/286C08L33/26C08L75/04C08K3/22
Inventor 冉宏敏
Owner SUZHOU NIUDONG PRECISION MFG TECH CO LTD