Embedded sleeve anchoring adhesive, and preparation method and application thereof

A technology of anchoring glue and casing anchor, which is applied in the direction of adhesive, adhesive type, polyurea/polyurethane adhesive, etc., and can solve the problem of not being able to meet the pull-out force requirements of the fastener system and not being able to pre-embed the casing to apply torque It is difficult to solve the problems of force and pull-out strength, and achieve excellent dynamic load performance, fast strength increase and good fatigue resistance.

Active Publication Date: 2014-01-08
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tightening force cannot be applied to the pre-embedded casing before gelation, and the casing can only be positioned after gelation, but no tightening force can be applied, so it is necessary to achieve a pullout strength of 100kN within 4 hours of skylight point very difficult
In addition, the use of acrylic resin as the anchor glue can generally achieve gelation in 30 minutes, and reach the maximum strength in 1 to 2 hours, but its maximum pull-out force is only 70-80kN, which cannot meet the pull-out force requirements of the fastener system
[0008] The materials used in the existing embedded casing anchoring methods are difficult to solidify in a short period of time and achieve high pullout strength, so it is necessary to find and develop embedded casing fast anchoring materials that can meet the maintenance requirements of today's high-speed railways

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This example is used to illustrate the embedded casing anchor glue and its preparation method of the present invention.

[0037] The formula of the embedded casing anchor glue of the present embodiment is (by weight):

[0038] 40 parts of polyurethane modified vinyl resin, 20 parts of epoxy modified vinyl resin, 10 parts of bis-trimethylolpropane tetraacrylate, 18 parts of methyl methacrylate, 12 parts of liquid nitrile rubber, N, N - 1.5 parts of dimethyl-p-aniline, 1.0 parts of white carbon black, 3.0 parts of benzoyl peroxide, and 150 parts of heavy calcium powder.

[0039] After weighing the above ingredients according to the proportion, mix polyurethane modified vinyl resin, epoxy modified vinyl resin, bis-trimethylolpropane tetraacrylate, methyl methacrylate, liquid nitrile rubber and N, N- Stir the dimethyl-p-aniline evenly, then add white carbon black, and stir evenly to obtain component A. When in use, add benzoyl peroxide as component B to component A at 20°...

Embodiment 2

[0042] This example is used to illustrate the embedded casing anchor glue and its preparation method of the present invention.

[0043] The formula of the embedded casing anchor glue of the present embodiment is (by weight):

[0044] 30 parts of polyurethane modified vinyl resin, 25 parts of epoxy modified vinyl resin, 15 parts of triethoxytrimethylolpropane triacrylate, 10 parts of styrene, 20 parts of liquid neoprene, N, N- 1.2 parts of dimethyl-p-aniline, 2.0 parts of white carbon black, 3.5 parts of 2,4-dichlorobenzoyl peroxide, and 150 parts of talcum powder.

[0045] After weighing the above ingredients according to the proportion, mix polyurethane modified vinyl resin, epoxy modified vinyl resin, triethoxytrimethylolpropane triacrylate, styrene, liquid neoprene and N,N-di Stir the methyl-p-aniline evenly, then add white carbon black, and stir evenly to obtain component A. When in use, add 2,4-dichlorobenzoyl peroxide as component B to component A at 30°C and stir for ...

Embodiment 3

[0048] This example is used to illustrate the embedded casing anchor glue and its preparation method of the present invention.

[0049] The formula of the embedded casing anchor glue of the present embodiment is (by weight):

[0050] 40 parts of polyurethane modified vinyl resin, 25 parts of epoxy modified vinyl resin, 10 parts of propoxylated glycerol triacrylate, 5 parts of hydroxymethyl methacrylate, 5 parts of styrene, isooctyl methacrylate 15 parts, 1.4 parts of cobalt naphthenate, 5.0 parts of white carbon black, 1.0 parts of methyl ethyl ketone peroxide, 200 parts of quartz sand.

[0051] After weighing the above ingredients according to the proportion, polyurethane modified vinyl resin, epoxy modified vinyl resin, propoxylated glycerol triacrylate, hydroxymethyl methacrylate, styrene, isooctyl methacrylate and The cobalt naphthenate is stirred evenly, then white carbon black is added, and the A component is obtained by stirring evenly. When in use, add methyl ethyl k...

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PUM

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Abstract

The invention provides an embedded sleeve anchoring adhesive, which comprises components A, components B and components C which are separately placed. The anchoring adhesive comprises the following components in parts by weight: 30-70 parts of vinyl resin, 5-20 parts of unsaturated polyester resin, 10-20 parts of active diluent, 5-25 parts of toughening agent, 1.0-2.0 parts of accelerating agent, 1.0-10.0 parts of white carbon black, 1.0-5.0 parts of curing agent and 100-250 parts of fillers, wherein the vinyl resin, the unsaturated polyester resin, the active diluent, the toughening agent, the accelerating agent and the white carbon black constitute the components A; the curing agent constitutes the components B; and the fillers constitute the components C. The invention further provides a preparation method of the anchoring adhesive, and the application of the anchoring agent to anchoring the embedded sleeve.

Description

technical field [0001] The invention relates to a pre-embedded casing anchoring glue, in particular to a pre-embedded casing anchoring glue with fast anchoring performance and a preparation method and application thereof. Background technique [0002] With the rapid construction and development of my country's high-speed railways, fastener systems have been widely used in various ballastless tracks. The fastener system refers to the intermediate connecting parts connecting the rail and the sleeper. Its function is to fix the rail on the sleeper, maintain the gauge and prevent the vertical and horizontal movement of the rail relative to the sleeper. [0003] The pre-embedded sleeve is an important part of the fastener system, also known as the pre-embedded nylon sleeve, which mainly plays the role of positioning, and at the same time, the spike is screwed in and fastened, so that the elastic strip is fastened to the rail. If the embedded casing is damaged, the tightening for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J163/10C09J167/06C09J11/04C09J11/06
Inventor 吴绍利王鑫吴智强
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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