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Epoxy resin composition and using method thereof

A technology of epoxy resin and composition, applied in the direction of tracks, ballast layers, buildings, etc., can solve the problems of not meeting the elastic requirements of the filling material of the baffle, resin powder cracking, migration to the surface, etc., and achieve good UV resistance. Irradiation, good adhesion, easy to industrialize effect

Active Publication Date: 2010-01-20
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In the high-speed disperser mixing tank, drop into alicyclic glycidyl ether type epoxy resin JEw-0120 (produced by Changshu Jiafa Chemical Co., Ltd.) 100g, glycidyl ether type flexible epoxy resin (DOW CEMIACAL DER755) 20g, Hexylene glycol glycidyl ether type epoxy resin (Changshu Jiafa Chemical Co., Ltd. JX-025) 1.3g, carbon black 2g, active silicon micropowder HGH600 50g, HGH1000 20g, defoamer A-530 (German BYK Chemicals) 0.1 g, coupling agent KH-560 1g, stir at 1000-1600 rpm, 25-40°C for 1 hour, then pour the mixture into a three-necked flask at 80-100°C, -0.1MPa defoaming and stirring for 1 hour , Outgoing packing as Class A.

[0036] Table 1 embodiment 1 test result comparison

[0037] serial number

project name

Technical requirements

Example 1

Test Methods

1

Appearance Quality

No obvious defects on the surface

Flat and smooth, no bubbles

visually

2

Apparent density g / cm 3

≥1.05

1.25 ...

Embodiment 2

[0041] Add 300g of toluene, 100g of polyoxypropylene and ethylene oxide copolymer with a molecular weight of 800-1000, and 5g of SbF5 into a 1-liter three-neck flask, stir and heat up to 50°C, and add alicyclic epoxy resin JEw-0112 within 2-3 hours 100g, react for 1 hour, add 50-100g of tap water, wash to remove SbF5, add 200g of JEw-0112, stir and raise the temperature at 130-150℃, remove toluene at -0.1MPa, cool down and filter the material, test the epoxy equivalent of 300g / mol, viscosity 12000mpa.s25℃.

[0042] Put 200g of the above-mentioned modified epoxy resin into the mixing tank of the high-speed disperser, add 30g of 1,4 butanediol glycidyl ether (JX-024 of Changshu Jiafa Chemical Co., Ltd.), 20g of titanium dioxide, 100g of HGH400 silicon powder, silicon Salt cement 50g, chopped glass fiber 15g, leveling agent 2g, 570 defoamer 1g, coupling agent KH560 5g, rotating speed 1000-1600 rpm, stirring for 1 hour at 25-40°C, transfer to a three-necked flask for vacuum Dega...

Embodiment 3

[0048] Add cycloaliphatic epoxy resin JEw-0122 300g in 1 liter of three-necked flask, carboxyl-terminated nitrile rubber (average molecular weight 2000) 15g, carboxyl-terminated butyl acrylate / methyl methacrylate copolymer (average molecular weight 1500) 30g, React at 120-160°C for 2 hours, cool down and filter out the material, test epoxy equivalent 232g / mol, viscosity 25000mpa.s25°C.

[0049] Put 200g of the above-mentioned modified epoxy resin into the mixing tank of the high-speed disperser, add 50g of 1,4-cyclohexanedimethanol glycidyl ether (JX-026 of Changshu Jiafa Chemical Co., Ltd.), 10g of carbon black, and HGH600 silicon powder 100g, 50g of heavy calcium carbonate (400 mesh), 2g of leveling agent, 1g of 570 defoamer, 10g of titanate coupling agent. Stir at 1000-1600 rpm and 25-40°C for 1 hour, transfer to a three-necked flask for vacuum defoaming and stir for 1 hour, and pack as Class A.

[0050] Table 3 embodiment 3 test result comparison

[0051] serial...

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Abstract

This invention supply a epoxide resin combination and its preparation method, and its application as filling material of railway plate type orbit convex shape block platform. It takes ethoxyline resin, pigment, padding, curing agent and other accessory ingredient as main ingredient. This ethoxyline resin combination possess good construction usability, good cement bond property, appropriate elasticity and syntheses mechanical property, and has performance of ultraviolet radiation proof, moisture-proof.

Description

technical field [0001] The invention relates to a chemical material, its preparation method and its use method, especially an epoxy 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 signifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/02C08J5/04C08K3/36E01B1/00C08L9/00C08L33/18C08L71/02
Inventor 梁平辉
Owner ZHEJIANG HANGMO SYNTHETIC MATERIAL
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