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Epoxy resin mortar composite used for plate type fragment-free track

A technology of epoxy resin and composition, which is applied in the direction of track, track maintenance, track laying, etc., can solve the problems of poor durability, slow strength increase, freezing expansion, etc., and achieve scientific and reasonable component distribution ratio, good elasticity and mechanical Intensity, the effect of rapid increase in strength

Inactive Publication Date: 2009-10-21
CHANGSHU JIAFA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the limitation of emulsified asphalt cement mortar, that is, the performance of CA mortar material itself and the instability of raw materials and preparation methods, the prior art has the following deficiencies: First, the CA mortar material has low strength, poor durability, short service life, and long-term There are cracking phenomena in use, which brings safety hazards to high-speed railway transportation; secondly, in order to hydrate the cement and form the required silicate compound to make it have the final strength during pouring of CA mortar construction, it is necessary to add excess water, excessive water On the one hand, the cement products will shrink in volume after drying, on the other hand, the residual water will freeze and expand in the cold season, which will cause cracks in the mortar cushion and affect the normal use of the slab track; third, the cement hardening needs If the time is too long, the strength rises slowly, affecting the construction progress and low work efficiency

Method used

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  • Epoxy resin mortar composite used for plate type fragment-free track
  • Epoxy resin mortar composite used for plate type fragment-free track
  • Epoxy resin mortar composite used for plate type fragment-free track

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The composition of the epoxy resin mortar composition: Part A: Add 100kg of bisphenol A type E-51 epoxy resin, glycidyl ether type flexible epoxy resin (JEf-0212 of Changshu Jiafa Chemical Co., Ltd.) into the stirred reactor 40kg, diethylene glycol glycidyl ether epoxy resin reactive diluent (Changshu Jiafa Chemical Co., Ltd. JX-023) 30kg, carbon black 2g, defoamer A-530 (Germany BYK Chemicals) 0.1g, coupling agent KH-5601g, degassing and stirring for 1 hour at a speed of 100 rpm, a temperature of 60°C, and a pressure of -0.1Mpa. The output package is used as part A for use. The viscosity is 500mpa.s when tested at 25°C.

[0033] Part B: Add 142kg of triethylenetetramine into the stirred reactor, stir to raise the temperature to 80°C, add 71kg of o-cresol glycidyl ether (Changshu Jafa Chemical JX-017) dropwise, and 102kg of butyl glycidyl ether to maintain the reaction After 5 hours, 10101 kg of hindered phenol was added, and the material was defoamed and discharged at ...

Embodiment 2

[0041] Composition of epoxy resin mortar composition: Part A: Add 100kg of bisphenol F epoxy resin with a molecular weight of 400 (epoxy equivalent 180, viscosity 3600mpa. Epoxy resin JEf-021240kg, neopentyl glycol glycidyl ether epoxy resin reactive diluent (Changshu Jiafa Chemical Co., Ltd. JX-022) 20kg, carbon black 3g, defoamer A-530 (German BYK chemical) 0.3 g, coupling agent epoxy silane KH-560 2g, defoaming and stirring at 80 rpm, temperature 25°C, pressure -0.1MPa for 1 hour, and the output package is used as part A for standby, and the test viscosity at 25°C is 490mpa .s.

[0042] The raw materials of Part B and Part C are the same as in Example 1, and the raw materials of Parts A, B and C are stirred and mixed in a weight ratio of 100:10:100 to obtain the epoxy resin mortar composition of the present invention.

[0043] The fluidity, usable period, gel time, and cured product performance of the above epoxy resin mortar composition were tested, and the specific test ...

Embodiment 3

[0045] The composition of epoxy resin mortar composition: A part and C part raw material are with embodiment 1, and B part raw material is obtained by the following method: add triethylenetriamine (DETA) 103kg, nonylphenol 220kg in stirring reactor, stir Raise the temperature to 80°C, add 101kg of 35% formaldehyde solution dropwise, maintain the reaction at 110°C for 5 hours, remove the generated water under reduced pressure -0.1MPa, cool down, filter and discharge the material as the raw material of Part B, and test the viscosity at 25°C It is 790mpa.s.

[0046] The above-mentioned part B raw materials and the same part A and C raw materials of Example 1 are stirred and mixed according to the weight ratio of A: B: C three materials 100: 58: 200 to obtain the epoxy resin mortar composition of the present invention.

[0047] The fluidity, service life, gel time, and properties of the cured product were tested for the epoxy resin mortar composition. The specific experimental res...

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Abstract

The invention discloses an epoxy resin mortar composite and an application of the composite for a filling material of railway plate type fragment-free track elastic adjusting layer, the epoxy resin mortar composite is composed of A, B and C three parts of materials, wherein part A is composed of the following materials according to parts by weight: 80-100 parts of epoxy resin, 1-10 parts of paint, 0-100 parts of diluent, 0-50 parts of toughening agent, 0-5 parts of ultraviolet absorbent, 0-5 parts of antioxidant, 0-2 parts of antifoaming agent and 0-5 parts of coupling agent; part B is curing agent; part C is filler, and the weight ratio of A, B and C parts is 80-100:5-100:50-600. Detection shows that the epoxy resin mortar composite provided by the invention has, for cement components, excellent adhesion stress, strong wet-heat aging resistance and chemical corrosion resistance and better elasticity and mechanical strength, thereby satisfying requirements of different climatic conditions and different construction conditions.

Description

technical field [0001] The invention relates to a chemical material, in particular to an epoxy resin mortar composition and its application as a filling material for an elastic adjustment layer between a railway slab ballastless track base and a track slab. Background technique [0002] The high-speed railway slab ballastless track is composed of a concrete base laid on the roadbed and a track slab mounted on the base. A certain gap is reserved between the track slab and the base to fill with liquid materials. When the liquid material solidifies, it becomes elastic Adjustment layer. The elastic adjustment layer is a key component of the slab ballastless track structure, and its performance directly affects the durability of the slab track application and the maintenance work of the slab track in the later stage. In order to solve the adjustment of the concrete base and the track slab and the elastic cushion, people have carried out comparative research on various materials....

Claims

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Application Information

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IPC IPC(8): C04B26/14E01B29/00
CPCC04B2111/28C04B2103/54C04B2111/27C04B2111/2038C04B2111/00663C04B26/14
Inventor 梁平辉钱振地邓卫东周立新苏浩胡世红钱黎刚陈幼林于晓明张吉义肖鸿章
Owner CHANGSHU JIAFA CHEM
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