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Ballast adhesive resin as well as preparation method and applications thereof

A technology of bonding resin and bonding resin, applied in the direction of track, road, ballast layer, etc., can solve the problems of slow curing speed, high resin viscosity, low resin viscosity, etc., and achieve fast curing speed, water resistance and aging resistance. improved effect

Inactive Publication Date: 2011-10-19
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, the object of the present invention is to overcome the shortcomings of existing ballast bonding resins such as slow curing speed, high resin viscosity, and volume ratio that cannot meet the requirements of construction equipment, and provide a kind of fast curing speed, low resin viscosity, which can be used at a volume ratio of 1 : 1 Ballast binder resin for construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This example is used to illustrate the preparation method of the ballast binding resin provided by the present invention.

[0036] Preparation of component A: 16.6 parts by weight of polyether polyol 1000 (hydroxyl value 112 mgKOH / g) and 23.7 parts by weight of dibutyl phthalate were added to the batching tank for vacuum dehydration. The reaction conditions were controlled as follows: the stirring speed was 100 rpm, the temperature was 100° C., the vacuum degree was 0.1 MPa, and the reaction was continued for 2 hours. After the reaction was completed, the temperature was lowered to 30°C, 59.7 parts by weight of liquefied MDI (Yantai Wanhua) was added, and the temperature was raised to 80°C at the same time, and the reaction was continued for 4 hours at a stirring speed of 100 rpm. Then, pack it.

[0037] Preparation of component B: 50.8 parts by weight of polyether polyol 1000 (hydroxyl value 112 mgKOH / g), 25.4 parts by weight of polyether polyol 303 (hydroxyl value 48...

Embodiment 2

[0039] This example is used to illustrate the preparation method of the ballast binding resin provided by the present invention.

[0040] Preparation of component A: based on 100 parts by weight of component A. Add 15.5 parts by weight of polyether polyol 1000 (hydroxyl value: 112 mgKOH / g) and 32.3 parts by weight of dibutyl phthalate into the batching tank for vacuum dehydration. The reaction conditions were controlled as follows: the stirring speed was 100 rpm, the temperature was 100° C., the vacuum degree was 0.1 MPa, and the reaction was continued for 2 hours. After the reaction was completed, the temperature was lowered to 30°C, 52.2 parts by weight of liquefied MDI (Yantai Wanhua) was added, and the temperature was raised to 80°C at the same time, and the reaction was continued for 4 hours at a stirring speed of 100 rpm. Then, pack it.

[0041] Preparation of component B: based on 100 parts by weight of component B. Polyether polyol 1000 (hydroxyl value 112mgKOH / g) 5...

Embodiment 3

[0043] This example is used to illustrate the application of the ballast binding resin prepared in Example 1 and Example 2 in the construction of Daqin Heavy-Duty Railway.

[0044] (1) Confirm that the environment is suitable, and the construction is carried out in non-rainy and snowy weather.

[0045] (2) Arrange the ballast, pile it up according to the standard, and fiddle with it.

[0046] (3) Use a polyurethane special sprayer (GRACO, REACTOR E-10), and check that the dry running condition is good after turning on the power. First use compressed air to blow off the dust on the ballast base to ensure good adhesion of polyurethane. Inject component A and component B prepared in Example 1 into the two barrels respectively, and turn on and preheat to 30°C. The material is then circulated and checked for leaks or blockages.

[0047] (4) When spraying, apply separately, the spray gun flow rate is 2L / min, and the construction time per square meter of land area is 5 minutes. T...

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PUM

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Abstract

The invention provides ballast adhesive resin as well as a preparation method and applications thereof. The resin comprises a composite A and a composite B, wherein the composite A comprises polyolefin polyol and / or polyether polyol and prepolymer of isocyanate, and the composite B comprises polyether polyol and / or polyether polyol and filling system. The ballast adhesive resin adopts double-composite design, can smoothly penetrate inside a ballast bed due to lower initial viscosity after mixing at temperature of 15-40 DEG C, thus ensuring fast curing of the resin and not influencing the normal running of a railway. In the invention, the polyolefin polyol is used as main raw materials, the water resistance and aging resistance of the material can be greatly improved. In addition, the mixed volume ratio of the two composites is 1:1, so that the problem that the ballast adhesive resin is matched with spraying equipment is solved.

Description

technical field [0001] The invention relates to a ballast binding resin and its preparation method and application. Background technique [0002] The ballast bed refers to the ballast cushion layer laid on the subgrade surface under the sleeper. Ballast is usually small blocks of granite with a diameter of 20-70mm, and there are gaps and friction between stones. The ballasted ballast bed has five major functions: (1) Partial pressure function: disperse the force transmitted from the sleeper and transmit it to the subgrade, so that the stress on the subgrade surface is uniform and less than its allowable strength; (2) Constraining the track frame: providing ballast bed resistance To constrain the track frame, it plays the role of fixing the position of the sleeper, preventing the longitudinal or lateral movement of the sleeper, and maintaining the geometric shape of the track direction and height. Since the contact force between ballast particles may be much larger than the...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/65C08G18/48C08G18/62C08G18/32C08G18/10C08K5/134C08K5/3475E01B1/00
Inventor 毛昆朋吴智强杜卫超王旭荣张建峰吴腾宇高新平刘全仁曾昭学吴绍利户小明王鑫
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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