Anchoring material for sleeper screw spikes

A technology of anchoring materials and spiral spikes, applied in the field of anchoring materials, can solve problems such as unfavorable fast anchoring operations, sudden heating of nail holes, single variety, etc., and achieve the effects of improving storage stability, reducing stress concentration, and enhancing flexibility

Inactive Publication Date: 2020-10-30
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of sulfur anchoring agent to anchor road studs has the following disadvantages: the raw materials need to be boiled at high temperature (140 ° C ~ 160 ° C) before anchoring, and a large amount of acid gas and toxic fumes will be generated during the boiling process, which is harmful to the health of construction personnel and the surrounding environment. Cause serious harm; when the anchoring agent boiled at high temperature is poured into the reserved nail holes, the nail holes will be heated suddenly, and the excessive temperature difference in a short period of time will destroy the surface structure of the reserved nail holes of the sleeper, causing hidden dangers of sleeper damage In addition, the sulfur anchoring agent will produce obvious volume shrinkage during the cooling and solidification process, which will easily cause gaps between the road stud and the surface of the reserved nail hole, affecting the bonding performance and pull-out resistance
At present, there are only one variety of resin anchoring agent for road studs on the market, only epoxy anchoring agent, its setting and curing speed is relatively slow, which is not conducive to fast anchoring operation on the line

Method used

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  • Anchoring material for sleeper screw spikes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) The parts by weight of each raw material in the anchoring material are:

[0023] Vinyl ester resin, 100 parts;

[0024] Amine accelerator, 2 parts;

[0025] Free radical inhibitor, 0.05 part;

[0026] Peroxide initiator, 3 parts;

[0027] Quartz sand, 800 parts;

[0028] Silica powder, 200 parts;

[0029] Mercaptan compound, 0.5 part;

[0030] Additives and pigments, etc., 2 parts

[0031] (2) The preparation steps include:

[0032] (1) Dissolve quantitative accelerators, polymerization inhibitors and thiol compounds in quantitative vinyl ester resins respectively, and prepare a mixture with a solute mass fraction of 1%;

[0033] (2) Add quantitative accelerator-resin mixture, polymerization inhibitor-resin mixture, mercaptan compound-resin mixture, and quantitative vinyl ester resin, quartz sand, silica powder, leveling agent, defoamer, wetting agent Add the wet dispersant, thixotropic agent, thickener and pigment into the high-speed dispersion kettle, stir...

Embodiment 2

[0036] (1) The parts by weight of each raw material in the anchoring material are:

[0037] Vinyl ester resin, 100 parts;

[0038] Amine accelerator, 0.5 part;

[0039] Free radical inhibitor, 0.05 part;

[0040] Peroxide initiator, 3 parts;

[0041] Quartz sand, 800 parts;

[0042] Silica powder, 200 parts;

[0043] Mercaptan compound, 0.5 part;

[0044] Additives and pigments, etc., 2 parts

[0045] (2) The preparation steps include:

[0046] (1) Dissolve quantitative accelerators, polymerization inhibitors and thiol compounds in quantitative vinyl ester resins respectively, and prepare a mixture with a solute mass fraction of 1%;

[0047] (2) Add quantitative accelerator-resin mixture, polymerization inhibitor-resin mixture, mercaptan compound-resin mixture, and quantitative vinyl ester resin, quartz sand, silica powder, leveling agent, defoamer, wetting agent Add the wet dispersant, thixotropic agent, thickener and pigment into the high-speed dispersion kettle, sti...

Embodiment 3

[0050] (1) The parts by weight of each raw material in the anchoring material are:

[0051] Vinyl ester resin, 100 parts;

[0052] Amine accelerator, 5 parts;

[0053] Free radical inhibitor, 0.05 part;

[0054] Peroxide initiator, 3 parts;

[0055] Quartz sand, 800 parts;

[0056] Silica powder, 200 parts;

[0057] Mercaptan compound, 0.5 part;

[0058] Additives and pigments, etc., 2 parts

[0059] (2) The preparation steps include:

[0060] (1) Dissolve quantitative accelerators, polymerization inhibitors and thiol compounds in quantitative vinyl ester resins respectively, and prepare a mixture with a solute mass fraction of 1%;

[0061] (2) Add quantitative accelerator-resin mixture, polymerization inhibitor-resin mixture, mercaptan compound-resin mixture, and quantitative vinyl ester resin, quartz sand, silica powder, leveling agent, defoamer, wetting agent Add the wet dispersant, thixotropic agent, thickener and pigment into the high-speed dispersion kettle, stir a...

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Abstract

The invention relates to an anchoring material for sleeper screw spikes. The nchoring material is characterized by comprising the following components in parts by weight: 60-110 parts of vinyl ester resin, 0.5 to 5 parts of an amine accelerator; 0.005 to 0.1 part of a free radical polymerization inhibitor; 0.5 to 5 parts of peroxide initiator, 500 to 1500 parts of continuous graded quartz sand, 100 to 500 parts of silica powder, 0.2 to 3 parts of secondary mercaptan compound, and 1 to 5 parts of leveling agent, defoamer, wetting dispersant, thixotropic agent, thickener and pigment. The situation that limit that resin spike anchoring agents in the market are single epoxy anchoring agents is broken through, the bottleneck of online rapid anchoring operation is solved, and the anchoring material is free of pollution, high in insulativity, high in early strength, high in pulling resistance, high in durability, free of corrosion to steel bars and acceptable in cost.

Description

technical field [0001] The invention belongs to the technical field of anchoring materials, and in particular relates to an anchoring material used for sleeper screw spikes. Background technique [0002] Sulfur anchoring agent anchoring is one of the main anchoring methods used in concrete sleepers in my country. Its advantages are relatively low price, fast material curing speed and good insulation (CN101219874, CN101935964A). However, the use of sulfur anchoring agent to anchor road studs has the following disadvantages: the raw materials need to be boiled at high temperature (140 ° C ~ 160 ° C) before anchoring, and a large amount of acid gas and toxic fumes will be generated during the boiling process, which is harmful to the health of construction personnel and the surrounding environment. Cause serious harm; when the anchoring agent boiled at high temperature is poured into the reserved nail holes, the nail holes will be heated suddenly, and the excessive temperature ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C04B26/06
CPCC04B26/06C04B2111/00637
Inventor程冠之董全霄谢永江郑新国方杭玮李世达夏思盟李子睿李彦山刘竞李书明曾志尤瑞林范佳闫子权冯仲伟谢清清王伟唯
OwnerRAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI