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Composition of unsaturated resin, preparation method, and method of application

A resin composition, unsaturated technology, applied in the field of chemical materials, can solve the problems of non-compliance with the requirements of the elasticity of the block filling material, resin pulverization and cracking, migration to the surface, etc., to achieve good resistance to ultraviolet radiation and good adhesion The effect of power and easy industrialization

Active Publication Date: 2007-10-10
ZHEJIANG HANGMO SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with polyurethane resin, its use process and adhesion to cement are better, but the cured product of ordinary epoxy resin is relatively brittle and hard, and the elastic modulus is too high, which does not meet the requirements of certain elasticity for the filling material of the retaining platform. Although a certain degree of elasticity can be produced by adding plasticizers or tougheners, as time goes by, the plasticizers or tougheners may migrate to the surface because they do not participate in the curing reaction, and the resin becomes brittle again.
[0007] In addition, the molecular structure of ordinary polyurethane resin and ordinary epoxy resin contains a large number of benzene ring double bonds, which can cause chain scission under long-term ultraviolet radiation, resulting in resin pulverization and cracking, which brings hidden dangers to the long-term stable operation of railways and increases maintenance costs

Method used

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  • Composition of unsaturated resin, preparation method, and method of application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add alicyclic glycidyl ether type epoxy resin JEw-0121 (produced by Changshu Jiafa Chemical Co., Ltd.) 300g, JEw-0112 (produced by Changshu Jiafa Chemical Co., Ltd.) 200g, triphenyl Phosphine 2.5g, hydroquinone 1g, stir and heat up to 80-100°C, add dropwise 194g of acrylic acid, the molar ratio of carboxyl group to epoxy group is 1:1.05, keep the reaction at 80-100°C for 5 hours, then cool down to 40-50°C , test viscosity 15000mpa.s25 ℃, epoxy value 0.05mol / 100g, acid value 8mgKOH / g, recorded as acrylic epoxy resin 1.

[0038] Add 500g of bisphenol A type epoxy resin DYD-128 (manufactured by Dalian Qihua Chemical Co., Ltd.), 2.5g of triphenylphosphine, and 1g of hydroquinone into a 1-liter three-necked flask, stir to raise the temperature to 80-100°C, add dropwise 196g of acrylic acid, the molar ratio of carboxyl group to epoxy group is 1:1.05, keep the reaction at 80-100°C for 5 hours, cool down to 80°C and discharge, the test viscosity is 23000mpa.s40°C, the epoxy val...

Embodiment 2

[0049] Throw 150g of tetrahydrophthalic acid, 150g of maleic acid, 213g of diethylene glycol, 400-213g of polypropylene glycol, and 1.5g of butyltin laurate in a 1-liter three-necked bottle with fractionating column, electric heating, stirring, and temperature controller. , stir and heat up 180-200°C, maintain the reaction, observe and measure the amount of water discharged through the top of the fractionation column, and when the theoretical amount (38-39g) is reached, the temperature is lowered by 100-120°C, and the remaining low boilers are removed under reduced pressure, and 370g of styrene is added. 5 g of p-hydroxyanisole, stirred and mixed evenly, and discharged to obtain an unsaturated polyester resin with a viscosity of 2500 mpa.s at 25 ° C.

[0050] Preface

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Embodiment 3

[0057] The same as the method of formula 1 in Example 1, the difference is that the acrylic epoxy resin is obtained by the following preparation method: at 50-60 ° C, the acrylic acid and aliphatic glycidyl ester type epoxy resin are mixed according to the carboxyl and epoxy moles The ratio is 1: 0.5, adding 0.1% hydroquinone by weight to the total weight of acrylic acid and aliphatic glycidyl ester type epoxy resin, reacting for 1 hour to form acrylic epoxy, then adding a weight of acrylic epoxy Dilute with 20% methyl styrene or low viscosity epoxy acrylate by weight of the ester.

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Abstract

This invention provides an unsaturated resin composition, its preparation method, and its application as the filler of the slab-free track cam plate. The unsaturated resin composition is mainly composed of unsaturated resin, pigment, filler, peroxide initiator, and other additives. The unsaturated resin composition has such advantages as high processability, and high adhesiveness to cement after cured, appropriate elasticity, good comprehensive mechanical properties, and high UV, humidity, heat, aging and fatigue resistance.

Description

technical field [0001] The invention relates to a chemical material, its preparation method and its use method, especially an unsaturated resin composition, its preparation method and its use method. Background technique [0002] The development of railways, especially high-speed railways, is an effective way to solve the contradiction between the rapid development of the national economy and the sharp increase in logistics, people flow and energy shortage, and to reduce transportation costs. The rate of accumulative deformation of the ballast and the accumulative deformation of the track bed will be accelerated accordingly. It is necessary to strengthen the track structure and frequent maintenance and repair work to meet the requirements of high-speed railways for high smoothness and high stability of the track. Compared with ballasted track, ballastless track has the outstanding advantages of track stability, uniformity of stiffness and durability, high ride comfort, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/08C08L67/06C08L63/10C08K5/14C08K3/36C08K3/22C08K3/26C08K5/07
Inventor 梁平辉
Owner ZHEJIANG HANGMO SYNTHETIC MATERIAL
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