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High-speed railway ballastless track convex blocking table filling material and preparation method thereof

A ballastless track and high-speed railway technology, applied in building insulation materials, building components, buildings, etc., to achieve excellent fatigue resistance, maintain stability, and improve low-temperature and cold-resistant performance

Active Publication Date: 2021-01-29
南京阿斯孚特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, under various temperature conditions, it is also necessary to consider its use manufacturability, suitable construction viscosity, service life and curing speed. The above performance requirements have not been well met in the existing technical solutions.

Method used

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  • High-speed railway ballastless track convex blocking table filling material and preparation method thereof
  • High-speed railway ballastless track convex blocking table filling material and preparation method thereof
  • High-speed railway ballastless track convex blocking table filling material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of component A maleimide modified asphalt: heat the reactor to 140°C, add some common base asphalt (US Shell), and add maleimide accounting for 2.50% of the mass of the base asphalt, and heat up to 155°C, maintain the pressure at 0.5MPa, and react for 180 minutes to obtain maleimide-modified asphalt;

[0041] Component B is liquid epoxy resin (E51, produced by Nanya Resin Factory);

[0042] The preparation method of component C blocked polyurethane prepolymer is as follows: heat the reactor to 70°C, add toluene and polyurethane prepolymer HKR-6776 into the reactor according to the mass ratio of 1:0.5, and feed N 2 Protect until it is completely dissolved, then add the toluene solution of methyl ethyl ketoxime (1:2 by mass ratio) dropwise into the reaction kettle equipped with polyurethane prepolymer, after 6.5 hours of reaction, stop the reaction, and remove it by distillation under reduced pressure at 70°C Solvent, detect the discharge, and obta...

Embodiment 2

[0053] The preparation method of component A maleimide modified asphalt is as follows: heat the reactor to 120°C, add some common base asphalt (Qilu Petrochemical), and at the same time add maleimide accounting for 8.0% of the mass of the base asphalt, and raise the temperature To 160°C, maintain the pressure at 0.45MPa, and react for 210 minutes to obtain maleimide-modified asphalt;

[0054] Component B is epoxy resin (E51, produced by Yueyang Petrochemical);

[0055] The preparation method of component C blocked polyurethane prepolymer refers to Example 1, the difference is that the polyurethane prepolymer is HKR-6786, the blocking agent is phenol, and the reaction time is 6.5 hours;

[0056] C component epoxy resin curing agent, by weight, consists of the following raw materials:

[0057] 100 parts of polyetheramine curing agent (among them, SURFONAMINE ® B60, JEFFAMINE ® M2070, JEFFAMINE® T5000, mixed uniformly according to the molar ratio of 1:0.54:0.32), blocked polyu...

Embodiment 3

[0066] The preparation method of component A maleimide modified asphalt is as follows: heat the reaction kettle to 110°C, add some ordinary base asphalt (origin: Shanjiasi), and add 3.65% maleimide in the base asphalt at the same time, Raise the temperature to 150°C, maintain the pressure at 0.35MPa, and react for 240 minutes to obtain maleimide-modified asphalt;

[0067] Component B is epoxy resin (E51, Jinan Tianmao);

[0068] The preparation method of component C blocked polyurethane prepolymer refers to Example 1, the difference is that the polyurethane prepolymer is HC-6692, the blocking agent is diethyl malonate, and the reaction time is 8 hours;

[0069] C component epoxy resin curing agent, by weight, consists of the following raw materials:

[0070] 100 parts of polyetheramine curing agent (among them, JEFFAMINE® M1000, JEFFAMINE ® XTJ-436, JEFFAMINE ® T500, SURFONAMINE ® B200, mixed uniformly according to the molar ratio of 1:0.34:0.55:0.40), 35.1 parts by weight...

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Abstract

The invention provides a high-speed railway ballastless track convex blocking table filling material and a preparation method thereof. The material comprises the following raw materials: a component Amaleimide modified asphalt, a component B epoxy resin and a component C epoxy resin curing agent, the component C is prepared from the following raw materials in parts by weight: 100 parts of a polyether amine curing agent, 20-45 parts of a blocked polyurethane prepolymer, 10-20 parts of amino polydimethylsiloxane, 0-2.5 parts of a curing accelerator and 5-17.5 parts of an auxiliary agent; the mass ratio of the component B to the component C is 1: (0.65-1.35), and the mass ratio of the component A to the sum of the component B and the component C is (0.5-1.5): 1. After the filling material iscured, an epoxy resin-polyurethane interpenetrating polymer network or island structure is formed, the flexibility of the material is greatly improved, and the shearing strength, the adhesive force,the tensile strength, the bending strength and the like of an adhesive layer are improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit materials, and relates to a new chemical material, in particular to a filling material for a convex block of a high-speed railway ballastless track, and a preparation method and use method thereof. Background technique [0002] The convex block of high-speed railway ballastless track has two main functions: 1) positioning function; positioning is the most basic function of the material of the convex block, and the material and the convex block together limit the vertical and horizontal displacement of the track slab, resist the vertical and horizontal forces, and transfer load. 2) Vibration damping function: The material of the boss provides appropriate elasticity and rigidity, which can effectively buffer the vertical and horizontal vibration of the train and ensure a long service life of the track structure. The height of the convex block of ballastless track is generally 250 mm, and the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/02C08L75/06C08L75/08C08L83/08C08K5/00C08K5/3475C08K5/134C08K5/3435C08G59/50
CPCC08L95/00C08G59/5006C08L2205/04C08L2205/22C08L2205/025C08L2205/02C08L2205/035C08L63/00C08L75/06C08L75/08C08L83/08C08K5/00C08K5/3475C08K5/1345C08K5/3435
Inventor 亢阳周敦宏
Owner 南京阿斯孚特新材料科技有限公司
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