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Epoxy asphalt sealing material for ballastless track of high-speed railway and preparation method thereof

A sealing material, epoxy asphalt technology, used in asphalt material adhesives, epoxy resin adhesives, other rubber adhesives, etc., can solve the problem of lack of expansion joint deformation requirements, and achieve low temperature flexibility, aging resistance, etc. good performance

Pending Publication Date: 2021-08-24
SOUTHEAST UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the lack of material deficiencies in the prior art to meet the deformation requirements of expansion joints of high-speed railway ballastless track, an epoxy asphalt sealing material for high-speed railway ballastless track and its preparation method are provided

Method used

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  • Epoxy asphalt sealing material for ballastless track of high-speed railway and preparation method thereof
  • Epoxy asphalt sealing material for ballastless track of high-speed railway and preparation method thereof
  • Epoxy asphalt sealing material for ballastless track of high-speed railway and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An epoxy asphalt sealing material comprising a component and a component B, with a weight part, as follows:

[0029] A Component: 45 parts of ordinary asphalt; 2 modifiers; 25 parts of rubber powder; 60 parts of aliphatic dibasic acid, dimeric acid or alkyd resin; 7 parts of fatty acid anhydride, 1.39 cured promoters;

[0030] B Component: 33 epoxy resin.

[0031] A, B two components of the two components are 4.2: 1

[0032] In the above components, ordinary asphalt is 70 oil asphalt, the modifier is acrylic, the rubber powder is 20 mesh rubber powder, the aliphatic dibasic acid, the dimeric acid or alkyd resin is an aliphatic dibasic acid, a di acid , Alcoholic resin is mixed in 1: 1: 1, wherein the aliphatic dibasic acid is a mixture of ethylenedic acid and butyric acid 1: 1, fatty acid anhydride is polyisobutylene butarcic anhydride, methyl nanophenic anhydride, modified methyl Naddick acid anhydride is mixed in 1: 1: 1, the cured promoter is phenoline, the epoxy resin i...

Embodiment 2

[0038] An epoxy asphalt sealing material comprising a component and a component B, with a weight part, as follows:

[0039] A component: 42 parts of ordinary asphalt; 3 modifiers; 28 parts of rubber powder; 70 aliphatic dibasic acids, dimeric acid or alkyd resins; 7 parts of fatty acid anhydride, 2.25 cured promoters;

[0040] B Component: 32 epoxy resin.

[0041] The weight ratio of two components of A, B is 4.6: 1

[0042] Among the above components, ordinary asphalt is 70 asphalt, the modifier is methacrylic acid, methacrylate, and methacrylate, glycidyl alkacly ester is mixed in 1: 1: 1, rubber powder is 30 mesh rubber powder, aliphatic The dibasic acid, the dimeric acid or alkyd resin is an aliphatic dibasic acid, a di-poly acid, and an alkoxide resin is mixed in 2: 1: 1, wherein the aliphatic dibasic acid is butyric acid, propylene acid 1: 1 Mixing, fatty acid anhydride is a dodienyl succinic anhydride, tung oil acid anhydride, and polyperamethoxide is mixed in 1: 1: 1, and ...

Embodiment 3

[0049] An epoxy asphalt sealing material comprising a component and a component B, with a weight part, as follows:

[0050] A Component: 40 parts of ordinary asphalt; 5 modifiers; 30 parts of rubber powder; 80 parts of aliphatic dibasic acid, dimeric acid or alkyd resin; 8 parts of fatty acid anhydride, 3.26 curing promoters;

[0051] B Component: 37 epoxy resin.

[0052] The weight ratio of the two components of B is 4.4: 1

[0053] Among the above components, the ordinary asphalt is 70 asphalt, the modifier is acrylamide, maleic anhydride is mixed in 1: 2, and the rubber powder is 40 mesh rubber powder, aliphatic dibasic acid, dimer acid or alkyd resin Aliphatic dibasic acid, wherein the aliphatic dibasic acid is ethylenedic acid, butadic acid, and propylene acid is mixed in 1: 1: 1, fatty acid anhydride is a polyanedic anhydride, polyethylene anhydride, hydrolyzed polymethic anhydride The cured accelerator is a polyether amine and an epoxy resin is a bisphenol A epoxy resin.

...

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Abstract

The invention provides an epoxy asphalt sealing material for a ballastless track of a high-speed railway and a preparation method thereof. The material comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (2-8): 1. The component A comprises the following components in parts by mass: 30-80 parts of common asphalt; 2-10 parts of a modifier; 20 to 80 parts of rubber powder; 30 to 100 parts of aliphatic dibasic acid, dimer acid or alkyd resin; 1-30 parts of fatty acid anhydride; and 0.1 to 10.0 parts of a curing accelerator. The component B is epoxy resin. The sealing material obtained through preparation has the advantages of being controllable in curing speed, high in strength, good in low-temperature flexibility, good in adhesion performance with concrete and good in aging resistance, and the epoxy asphalt sealing material has the advantage of being high in adhesion strength with the concrete and has good popularization prospects.

Description

Technical field [0001] The present invention belongs to the field of building materials, in particular to epoxy asphalt sealing materials for high-speed railway without trails and preparation methods thereof. Background technique [0002] In order to adapt to the deformation of the concrete structure under different temperatures, the long lines of the rod sheet, the road floor, the closed layer, etc. are continuously poured, and the seam (2 to 3 cm) is provided in a distance (width 2 to 3 cm). At the same time, the seam (1 to 2 cm) is also present between the base / support layer and the offline structure. Due to the huge investment in the track project, the repair fee, the deterioration, cracking aging, waterproof failure caused by the failure of sealing materials, will cause many problems, so the requirements for sealing materials cannot be ignored. However, the high-speed railwayless orbit sealing material that has been put into operation has mainly asphalt, polysulfur, polyur...

Claims

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Application Information

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IPC IPC(8): C09J195/00C09J163/02C09J121/00C09J11/06C09J11/08C08G59/58C08G59/48C08G59/42C08G59/60
CPCC09J195/00C09J11/06C09J11/08C08G59/58C08G59/4284C08G59/4276C08G59/4261C08G59/4215C08G59/4207C08G59/48C08G59/60C09J163/00C08L2201/08C08L63/00C08L21/00C08K5/09C08K5/101C08K5/1515C08K5/1539C08K5/20C08L95/00
Inventor 闵召辉王继军谢佳钦王褀昌王梦
Owner SOUTHEAST UNIV
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