Low-temperature casting material for extremely cold areas, and production method thereof

A low-temperature casting, regional technology, applied in the field of rail, can solve the problems of difficult to meet the three-dimensional rigidity of embedded rail system, vibration and noise reduction construction process performance, etc., achieve excellent vibration and noise reduction, reduce vibration, and reduce noise sources. Effect

Active Publication Date: 2016-03-02
CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-temperature castable material and its manufacturing method for the above-mentioned problems in order to solve the problem that the existing polymer materials cannot meet the requirements of the three-dimensional rigidity of the embedded track system in the extremely cold area. , vibration reduction and noise reduction and construction process performance and other technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Component A: polypropylene glycol 100g, TDI-10038g, propylene carbonate 16g, BENZOFLEX98812g;

[0030] Component B: MOCA100g, rubber powder 100g (40 mesh), zinc isooctanoate 8g, TCEP12g, antioxidant 2642.3g, UV-91g, color paste 0.6g (black: white: blue = 1: 0.5: 0.5);

[0031] The mixing ratio of the two components is component A:component B=83:100 (weight ratio).

[0032] The specific production steps are:

[0033] (1) Prepare the raw materials of the above-mentioned component A in proportion, add them to the reaction kettle for dehydration at 100-110°C, cool down to below 70°C, gradually heat and stir to 90°C under vacuum conditions, stir for 3-4 hours, and cool After making A material.

[0034] (2) Mix the raw materials of component B in proportion, add them to a high-speed mixer and stir evenly, and then grind them with a colloid grinder. After grinding, put the material into the reaction kettle, heat to 105-115°C, stir in vacuum for 2 hours, and make material B ...

Embodiment 2

[0038] Component A: Polytetramethylene glycol 100g, TDI-8031g, 1,1,1,3,3-pentafluoropropane 10g, BENZOFLEX988SG 12g;

[0039] Component B: MOCA100g, calcium carbonate (200 mesh) 60g, potassium oleate 6g, TCPP8g, antioxidant 2641.5g, phenothiazine 1g, UV-240.6g, color paste 1g (black:yellow:green=1:0.7 :0.3)

[0040] The mixing ratio of the two components is component A:component B=108:100 (weight ratio).

[0041] The specific production steps are:

[0042] (1) Prepare the raw materials of the above component A in proportion, add them to the reaction kettle for dehydration at 100~110°C, cool down to below 70°C, gradually heat and stir to 90°C under vacuum conditions, stir for 3~4 hours, and cool After making A material.

[0043] (2) Mix the raw materials of component B in proportion, add them to a high-speed mixer and stir evenly, and then grind them with a colloid grinder. After grinding, put the material into the reaction kettle, heat to 105~115°C, stir in vacuum for 2 ho...

Embodiment 3

[0047] Component A: Tetrahydrofuran-propylene oxide copolyether 100g, TDI-10025g, fluorodichloroethane 8g, BENZOFLEX988SG6g;

[0048] Component B: DMTDA100g, quartz powder (60 mesh) 40g, cobalt naphthenate 10g, triphenyl phosphate 10g, antioxidant 10102g, UV-490.9g, color paste 1.2g (black: red: white = 1: 0.4 :0.2)

[0049] The mixing ratio of the two components is component A:component B=135:100 (weight ratio)

[0050] The specific production steps are:

[0051] (1) Prepare the raw materials of the above component A in proportion, add them to the reaction kettle for dehydration at 100~110°C, cool down to below 70°C, gradually heat and stir to 90°C under vacuum conditions, stir for 3~4 hours, and cool After making A material.

[0052] (2) Mix the raw materials of component B in proportion, add them to a high-speed mixer and stir evenly, and then grind them with a colloid grinder. After grinding, put the material into the reaction kettle, heat to 105~115°C, stir in vacuum fo...

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Abstract

The invention discloses a low-temperature casting material for extremely cold areas. The low-temperature casting material comprises a component A and a component B, wherein the weight ratio of the component A to the component B is (80-150):100, the weight ratio of oligomer polyol, isocyanate, a viscosity reducer and a plasticizer in the component A is 100:(24-42):(5-20):(8-16), and the weight ratio of a chain extender, a filling agent, a catalyst, a flame retardant, an anti-oxidant, a photostabilizer and a coloring agent in the component B is (10-2):(20-80):(6-12):(6-15):(1-3):(0.5-2):(0.5-1). The low-temperature casting material has the benefits that the glass transition temperature is low, the temperature influence is eliminated when construction is carried out in extremely cold areas at -40 DEG C or above, and the high elasticity of the material can be kept after complete curing; the vibration reduction effect and the noise reduction effect are excellent, and isotropic stiffness, damping properties and physical properties which can meet requirements are provided; the material is environment-friendly, is unlikely to burn, and is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of rails, in particular to a low-temperature pouring material used in extremely cold regions and a manufacturing method thereof. Background technique [0002] As a new type of ballastless track system, the embedded track system has changed the way that the traditional ballastless track uses fasteners to discretely support and fix the rail. The track system is to pour the polymer composite material into the rail bearing groove, and cover the rail after being cured, which can replace the traditional fastener to continuously support and fix the rail. Due to the mechanical requirements of the embedded track, the polymer castable used in the embedded track system must be able to provide the entire track system with lateral stiffness, vertical stiffness and longitudinal stiffness that meet the design requirements. [0003] Patent document CN103351579A discloses "a polymer composite material for embedded track sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G18/10C08L75/08C08L21/00
CPCC08G18/10C08G18/4825C08G18/4854C08G18/7614C08G18/7621C08L75/08C08G18/3814C08G18/3868C08L21/00
Inventor 焦洪林袁彬彬何云伟费雪梅
Owner CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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