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Single/double-component construction type polyurethane joint pouring glue for ballastless track concrete expansion joint and preparation method thereof

A technology for concrete and expansion joints, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of inconvenient construction, poor flexibility at low temperature, uneven mixing, etc., and achieve the effect of convenient construction

Active Publication Date: 2017-09-08
GUANGDONG PUSTAR SEALED RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some construction areas where it is difficult to provide mixing machinery, the construction is inconvenient, and manual mixing is likely to cause uneven mixing. It is advisable to use a one-component moisture-curing polyurethane caulking material
[0004] In addition, the single-component polyurethane joint glue and the two-component polyurethane joint glue system currently on the market are obviously different, and the overall curing is slow; the single-component curing of the two-component cannot meet the technical requirements in the application field of non-slip track concrete expansion joints
In addition, the single-component polyurethane joint glue and two-component polyurethane joint glue system of the prior art has a high tensile modulus after curing, resulting in the defects of poor displacement resistance and low temperature flexibility

Method used

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  • Single/double-component construction type polyurethane joint pouring glue for ballastless track concrete expansion joint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] A single-component dual-purpose construction-type polyurethane joint glue for expansion joints of track-free concrete, which consists of a main agent and a compounding agent, and the main agent is composed of the following components in weight percentage:

[0089] Polyurethane prepolymer 40%~70%

[0090] Filler 20%~35%

[0091] Thickener 1%~10%

[0092] Thinner 1%~5%

[0093] Catalyst 1%~3%

[0094] Adhesion promoter 0.2%~2%

[0095] Defoamer 1%~3%

[0096] Light stabilizer 0.1%~1%

[0097] Antioxidant 0.1%~1%

[0098] Dewatering agent 0.5% ~ 2%;

[0099] Wherein, the polyurethane prepolymer is composed of the following components in weight percent:

[0100] Polyoxypropylene glycol 10%~40%

[0101] Polyoxypropylene triol 10%~30%

[0102] Polyisocyanate 5%~15%

[0103] Plasticizer 20%~50%

[0104] Catalyst 0.1%~1%;

[0105] Wherein, the compounding agent is made up of the following components by weight percentage:

[0106] Plasticizer 15%~35%

[0107] Thic...

Embodiment 2

[0153] A single-component dual-purpose construction type polyurethane joint glue for expansion joints of track-free concrete, which is composed of a main agent and a compounding agent, and the main agent is composed of the following raw materials in mass percentages:

[0154] Polyurethane prepolymer 65%

[0155] Ground calcium carbonate 13%

[0156] Light Calcium Carbonate 8%

[0157] Diatomaceous earth 2%

[0158] Carbon black 5%

[0159] Fumed silica 2%

[0160] Vinyl resin 2%

[0161] Rosin resin 2%

[0162] Xylene 2%

[0163] Ethyl acetate 1%

[0164] Stannous octoate 0.5%

[0165] Dibutyltin dilaurate 1%

[0166] Gamma-Aminopropyltrimethoxysilane 1%

[0167] N-Phenyl-γ-aminopropyltrimethoxysilane 1%

[0168] BYK070 1.2%

[0169] Tinuvin326 1%

[0170] Antioxidant 1010 0.8%

[0171] Toluenesulfonyl isocyanate 1.5%

[0172] Wherein polyurethane prepolymer comprises the raw material composition of following mass percentage:

[0173] Polyoxypropylene glycol 35...

Embodiment 3

[0192] A single-component dual-purpose construction type polyurethane joint glue for expansion joints of track-free concrete, which is composed of a main agent and a compounding agent, and the main agent is composed of the following raw materials in mass percentages:

[0193] Polyurethane prepolymer 58%

[0194] Talc 6%

[0195] PVC paste resin 5%

[0196] Light Calcium Carbonate 10%

[0197] Attapulgite 3%

[0198] Carbon black 2%

[0199] Terpene phenolic resin 3%

[0200] Hydrogenated Castor Oil 3%

[0201] Dichloromethane 1.1%

[0202] Butyl acetate 2%

[0203] Stannous octoate 0.5%

[0204] Bismorpholine diethyl ether 0.6%

[0205] γ-(2,3-Epoxypropyl)propyltrimethoxysilane 1%

[0206] BYK082 2%

[0207] Tinuvin329 0.8%

[0208] Antioxidant 1076 0.5%

[0209] Trimethyl orthoformate 1.5%

[0210] Wherein polyurethane prepolymer comprises the raw material composition of following mass percentage:

[0211] Polyoxypropylene glycol 28%

[0212] Polyoxypropylene Tr...

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Abstract

The invention relates to the technical field of building sealants, and in particular to single / double-component construction type polyurethane joint pouring glue for a ballastless track concrete expansion joint and a preparation method thereof. The single / double-component construction type polyurethane joint pouring glue for the ballastless track concrete expansion joint is prepared from a main agent and an accessory ingredient, wherein the main agent is prepared from a polyurethane prepolymer, filler, a thickening agent, a diluent, a catalyst, a cementation accelerator, a defoaming agent, a light stabilizer, an antioxidant and a water removing agent; the polyurethane prepolymer is prepared from polypropylene oxide glycol, polypropylene triol, polyisocyanate, a plasticizer and the catalyst; the accessory ingredient is prepared from the plasticizer, a thickening agent and micromolecular polyol. The preparation method comprises the following steps: step one, preparation of the polyurethane prepolymer; step two, preparation of the main agent; step three, preparation of the accessory ingredient. After the single / double-component construction type polyurethane joint pouring glue disclosed by the invention is cured, the tensile modulus is low, the anti-displacement capacity is strong, and low-temperature flexibility is good.

Description

technical field [0001] The invention relates to the technical field of building sealants, in particular to a single-component and dual-purpose construction type polyurethane joint glue for non-jaw track concrete expansion joints and a preparation method thereof. Background technique [0002] With the development of high-speed rail technology, no-blade track structure technology has become the main track structure form of high-speed railway. In order to adapt to the thermal expansion and contraction deformation of the concrete structure itself caused by the ambient temperature, expansion joints need to be set at intervals, and joint filling materials must be used for filling. At present, the joint filling materials used in the concrete expansion joints of the high-speed rail-free track mainly include asphalt, silicone and polyurethane. Asphalt-based joint filling materials are low in cost, but require hot construction, and have high requirements for equipment and constructio...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/06C09J11/04C09J11/08C08G18/48
CPCC08G18/4812C08G18/4825C08G18/4829C08K2003/2241C08K2003/265C08K2201/011C08K2201/014C08L2205/02C08L2205/025C08L2205/03C08L2205/035C09J11/04C09J11/06C09J11/08C09J175/08C08L93/04C08L45/00C08K13/02C08K5/544C08K5/12C08K3/26C08K3/34C08L27/06C08L61/14C08L91/00C08K13/06C08K5/5435C08K3/346C08L23/0853C08L91/06C08K13/04C08K7/28C08K3/36C08K3/04C08K5/053C08K3/22
Inventor 詹锋谢志明谢梦兴张志文袁梅
Owner GUANGDONG PUSTAR SEALED RAYON CO LTD
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