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High-speed iron putty polyester resin material, main agent and preparation method thereof, high-speed iron putty and application method thereof

A technology of polyester resin and putty, which is applied in the field of high-speed rail putty and its application, high-speed rail putty polyester resin material, which can solve the problem of large area of ​​putty scraping and polishing, small pinholes that cannot be easily closed, and affect the appearance of the whole vehicle, etc. problems, to achieve excellent flexibility, reduce adsorption, and ensure stability

Active Publication Date: 2022-07-12
三河亮克威泽工业涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, also because the putty is applied to the whole vehicle, the scraping and grinding area of ​​the putty is relatively large, which requires the putty to have a long operating time (more than 20 minutes)
Thirdly, the cured putty film is required to be dense and free of pinholes, because small pinholes cannot be easily closed, and will be brought into subsequent coatings to affect the appearance and anti-corrosion performance of the vehicle

Method used

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  • High-speed iron putty polyester resin material, main agent and preparation method thereof, high-speed iron putty and application method thereof
  • High-speed iron putty polyester resin material, main agent and preparation method thereof, high-speed iron putty and application method thereof
  • High-speed iron putty polyester resin material, main agent and preparation method thereof, high-speed iron putty and application method thereof

Examples

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Effect test

preparation example Construction

[0057] The embodiment of the present invention provides a preparation method of a high iron putty polyester resin material, comprising:

[0058] reacting dicyclopentadiene with maleic anhydride to obtain a dicyclopentadiene-maleic anhydride adduct containing double bonds and carboxyl groups;

[0059] The primary unsaturated polyester resin is prepared by polycondensation of dicyclopentadiene-maleic anhydride adduct, dibasic acid and its derivative monomer and dihydric alcohol monomer, dibasic acid and its derivative monomer The body includes at least one of dibasic acid monomer and dibasic acid anhydride monomer, and the dibasic alcohol monomer contains 10-30% of its molar weight of ether bond-containing glycol monomer;

[0060] Oxidizing the dicyclopentadiene group of the primary unsaturated polyester resin into an epoxy group to obtain an unsaturated epoxy polyester resin;

[0061] The unsaturated epoxy polyester resin is modified with a secondary amino silane coupling agen...

Embodiment 1

[0113] The present embodiment provides the preparation method of high iron putty polyester resin, specifically:

[0114] Dicyclopentadiene and maleic anhydride were first added to the reaction kettle, the temperature was raised to 135° C., and the reaction was carried out for 2 hours. Then add propylene glycol, diethylene glycol, and phthalic anhydride, and stir for about 20 minutes until the mixture is uniform. The temperature was raised to 150°C within 1 hour, and then increased to 200°C at a rate of 10°C per hour. When the acid value is less than 60mg / g, the temperature is lowered to 180°C, and vacuum is applied. When the acid value decreased to 20 mg / g, it was cooled to obtain a primary unsaturated polyester resin.

[0115] The resulting primary unsaturated polyester resin was dissolved in dichloromethane and heated to 40°C. Peracetic acid was added dropwise to the resin under stirring, and the temperature was maintained to react for 3 hours. After the reaction is comp...

Embodiment 2

[0121] This example is basically the same as Example 1, except that the amount of cobalt isooctanoate is 0.1kg (accounting for 0.25% of the mass of the flexible unsaturated polyester resin in the high iron putty polyester resin material), the mass of calcium isooctanoate is 0.1kg It is 0.2kg (accounting for 0.50% of the mass of the flexible unsaturated polyester resin in the resin material).

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Abstract

The invention discloses a high-speed iron putty polyester resin material, a main agent and a preparation method thereof, a high-speed iron putty and an application method thereof, and relates to the technical field of coatings. The preparation method of high-speed iron putty polyester resin material comprises the following steps: making dicyclopentadiene-maleic anhydride adduct, dibasic acid and its derivative monomer and dihydric alcohol monomer through polycondensation reaction to obtain primary unsaturated Polyester resin; the dicyclopentadiene group of the unsaturated resin is oxidized into epoxy group, and then it is modified with a secondary amino silane coupling agent. The main agent of high-speed iron putty includes the above-mentioned high-speed iron putty. The high-speed iron putty includes a curing agent and the high-speed iron putty main agent provided in the embodiment of the present invention. The application method includes mixing and applying the curing agent and the putty main agent. High iron putty polyester resin material, the unsaturated polyester putty made by it has excellent impact resistance. The putty main agent solves the technical contradictions of long operation time, usable time stability in storage period, sandable time stability in storage period and no pinholes in putty.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyester resin material for high iron putty, a main ingredient and a preparation method thereof, and a high iron putty and an application method thereof. Background technique [0002] Unsaturated polyester putty, also known as putty, is mainly composed of unsaturated polyester resin, styrene and filler. The curing agent of the unsaturated polyester resin is cyclohexanone peroxide (CHPO) or benzoyl peroxide (BPO), which, as initiators of radical polymerization, can initiate the radical polymerization of C=C double bonds. Unsaturated polyester resin contains C=C double bond. After adding curing agent, C=C double bond of unsaturated polyester resin and C=C double bond of styrene undergo radical polymerization, and the resin is cross-linked and cured to form a film. [0003] Cyclohexanone peroxide or benzoyl peroxide is used as an initiator. The mechanism is: under the action of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/91C08G63/676C08F283/01C08F212/08C09D5/34
CPCC08G63/918C08G63/676C08F283/01C09D5/34C08F212/08
Inventor 李谌朱晖
Owner 三河亮克威泽工业涂料有限公司
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