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A kind of preparation method of automobile pipe coating

A pipe and paint technology, which is applied in the field of automobile pipe paint preparation, can solve problems such as different working environments, easy to be corroded, and different property requirements, and achieve the effects of short drying time, smooth appearance, and good market prospects

Active Publication Date: 2017-12-08
华纤(深圳)新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the many parts of the car, the working environment is different, and the requirements for its properties are also different. Especially in the process of using the car pipeline, due to the high temperature, it is easy to be corroded, and it is easy to cause safety hazards

Method used

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  • A kind of preparation method of automobile pipe coating

Examples

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Effect test

Embodiment 1

[0019] A preparation method for automobile pipe coating, comprising the following steps:

[0020] (1) In parts by weight, put 69 parts of polypropylene glycol and 1 part of pentaerythritol in a reaction kettle, vacuum dehydrate at 100°C for 60 minutes, wherein the vacuum degree is between -0.08MPa, and add 1 part of dicarboxylate half ester after cooling , 2 parts of dimethylolbutyric acid, 20 parts of diisocyanate, heated to 60°C for 1 hour under the protection of nitrogen, and kept warm for 10 minutes, then raised the temperature to 100°C, added 8 parts of polydimethylsiloxane to continue the reaction for 30 minutes, and obtained Prepolymer;

[0021] (2) Add 2 parts of mica powder, 4 parts of titanium dioxide, 2 parts of diisooctyl phthalate, 2 parts of dibutyl sebacate, 12 parts of antioxidant 1010 to the prepolymer obtained in step (1). , 5 parts of hydroxyethyl cellulose, 2 parts of ammonium persulfate, 0.5 parts of zinc methacrylate, 38 parts of N-methylpyrrolidone, rea...

Embodiment 2

[0023] A preparation method for automobile pipe coating, comprising the following steps:

[0024] (1) In parts by weight, put 85 parts of polypropylene glycol and 7 parts of pentaerythritol in a reaction kettle, vacuum dehydrate at 120°C for 90 minutes, wherein the vacuum degree is between -0.05MPa, add 8 parts of dicarboxylate half ester after cooling , 7 parts of dimethylol butyric acid, 32 parts of diisocyanate, heated to 90°C for 2.5 hours under the protection of nitrogen, kept warm for 15 minutes, then raised the temperature to 130°C, added 18 parts of polydimethylsiloxane to continue the reaction for 50 minutes, get prepolymer;

[0025] (2) Add 14 parts of mica powder, 19 parts of titanium dioxide, 12 parts of diisooctyl phthalate, 4 parts of dibutyl sebacate, 17 parts of antioxidant 168 to the prepolymer obtained in step (1). , 10 parts of hydroxyethyl cellulose, 13 parts of ammonium persulfate, 2 parts of zinc methacrylate, 45 parts of N-methylpyrrolidone, react at 85...

Embodiment 3

[0027] A preparation method for automobile pipe coating, comprising the following steps:

[0028] (1) In parts by weight, put 75 parts of polypropylene glycol and 6 parts of pentaerythritol in a reaction kettle, vacuum dehydrate at 110°C for 75 minutes, and the vacuum degree is between -0.07MPa, add 4 parts of dicarboxylate half ester after cooling , 5 parts of dimethylol butyric acid, 24 parts of diisocyanate, heated to 70°C for 1-2.5 hours under the protection of nitrogen, and kept warm for 13 minutes, then raised the temperature to 120°C, added 14 parts of polydimethylsiloxane to continue the reaction 40min, obtain prepolymer;

[0029] (2) Add 8 parts of mica powder, 13 parts of titanium dioxide, 8 parts of diisooctyl phthalate, 4 parts of dibutyl sebacate, 15 parts of antioxidant 168 to the prepolymer obtained in step (1). , 7 parts of hydroxyethyl cellulose, 8 parts of ammonium persulfate, 1.5 parts of zinc methacrylate, 41 parts of N-methylpyrrolidone, react at 80°C for...

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Abstract

The invention discloses a preparation method for a car pipeline coating. The preparation method comprises the following steps that polypropylene glycol and pentaerythritol are placed in a reaction kettle, vacuum dewatering is performed, cooling is performed, then dicarboxyl half-esters, dimethylolbutanoic acid and diisocyanate are added into the reaction kettle, the mixture is heated under protection of nitrogen and then reacts for 1-2.5 h, heat preservation is performed, then the temperature is increased, and polydimethylsiloxane is added to continue the reaction; mica powder, titanium dioxide, plasticizers, antioxidants, hydroxyethyl cellulose, ammonium persulfate, zinc methacrylate and N-methyl-2-pyrrolidone are added and react for 3-4.5 h, glacial acetic acid is added for neutralization, the temperature is increased, then paraffin wax is added to continue the reaction, solvent is removed in vacuum, heat preservation is performed, standing is performed, and then the car pipeline coating is obtained. The prepared coating is good in saline water resisting and high temperature resisting effects, smooth and flat in appearance and short in hard drying time, can be widely applied to the field of car pipelines and has the good market prospect.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a preparation method for automobile pipeline coatings. Background technique [0002] At present, my country's automobile sales have continuously exceeded 18 million. The rapid growth of automobile sales has strongly stimulated the continuous development of the automotive coating business and brought huge business opportunities to the automotive coating industry. [0003] Automotive coatings have the following functions: (1) Beautify the appearance of the car: the paint film is required to be full, the luster is gorgeous and soft, the sharpness of reflection is good, the colors are various and in line with the trend, so that the appearance looks more pleasing to the eye and gives people a sense of Aesthetics; (2) Excellent construction and supporting properties. Automobile paints are generally multi-layer coatings. Because single-layer coatings generally cannot achieve good performance, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D7/12C08F283/00C08G18/66C08G18/48C08G18/61C08G18/34
CPCC08F283/006C08G18/12C08G18/4081C08G18/4825C08G18/61C08G18/6484C08G18/6677C08G18/6692C08K3/34C08K5/11C08K5/12C08K13/02C08K2003/2241C08L2201/08C08L2203/18C09D5/08C09D5/18C09D151/08C09D175/08C08F220/06C08G18/64C08L1/284C08K3/22
Inventor 郭晓强
Owner 华纤(深圳)新型材料有限公司