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Adhesive for high-speed rail and preparation method of adhesive

A technology of adhesive glue and high-speed rail, applied in the direction of non-polymer adhesive additives, wax adhesives, adhesive types, etc., can solve problems such as waste, waste of manpower and time

Active Publication Date: 2017-10-17
上海都昱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

However, the two-component polyurethane adhesive must be adjusted according to a certain ratio before use, which wastes manpower and time. If the amount of polyurethane adhesive adjusted is too large, it will cause waste. Therefore, it is very necessary to improve the formula to develop a Polyurethane adhesive with good fluidity and good bonding performance

Method used

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  • Adhesive for high-speed rail and preparation method of adhesive
  • Adhesive for high-speed rail and preparation method of adhesive
  • Adhesive for high-speed rail and preparation method of adhesive

Examples

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preparation example Construction

[0069] Another aspect of the present invention provides the preparation method of described adhesive glue for high-speed rail, comprising the following steps:

[0070] (1) Add corresponding parts by weight of polyurethane prepolymer, epoxy resin prepolymer and 2-diethylaminoethanol into a stainless steel reactor, and heat up to 120-150°C, then stir and react for 2-5 hours to obtain a gel-like product;

[0071] (2) Add silane coupling agent modified sulfonated polybenzimidazole, diluent, and white oil to the gel-like product obtained in step (1) and stir for 1 to 2 hours at 150°C; cool to room temperature, and discharge Obtain adhesive glue for high-speed rail.

Embodiment 1

[0075] Embodiment 1 provides a kind of adhesive glue for high-speed rail, and described adhesive glue for high-speed rail comprises the following components, in parts by weight,

[0076]

[0077] The preparation process of the polyurethane prepolymer is as follows :

[0078] In a dry three-necked flask, add 5 moles of glycerin, vacuum dehydrate at 110°C for 0.5h, cool down to 60°C, add 1 mole of xylene, then add 3 moles of hydroxypyridine modified tetraisocyanate, and heat up to 80°C , reacted for 3h, cooled to room temperature, filtered and dried to obtain polyurethane prepolymer;

[0079] Among them, the molar ratio between glycerol and hydroxypyridine-modified tetraisocyanate is 5:3.

[0080] The preparation process of described hydroxypyridine modified tetraisocyanate is as follows:

[0081] 3 moles of 5-hydroxyl-2-pyridinecarboxylic acid and 3 moles of dimethyltriphenylmethane tetraisocyanate were dissolved in 100ml of dimethyl sulfoxide respectively to obtain 5-...

Embodiment 2

[0093] Embodiment 2 provides a kind of adhesive glue for high-speed rail, and described adhesive glue for high-speed rail comprises the following components, in parts by weight,

[0094]

[0095] The preparation process of the polyurethane prepolymer is as follows :

[0096] In a dry three-necked flask, add 5 moles of glycerin, vacuum dehydrate at 110°C for 0.5h, cool down to 60°C, add 1 mole of xylene, then add 3 moles of hydroxypyridine modified tetraisocyanate, and heat up to 80°C , reacted for 3h, cooled to room temperature, filtered and dried to obtain polyurethane prepolymer;

[0097] Among them, the molar ratio between glycerol and hydroxypyridine-modified tetraisocyanate is 5:3.

[0098] The preparation process of described hydroxypyridine modified tetraisocyanate is as follows:

[0099] 3 moles of 5-hydroxyl-2-pyridinecarboxylic acid and 3 moles of dimethyltriphenylmethane tetraisocyanate were dissolved in 100ml of dimethyl sulfoxide respectively to obtain 5-...

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PUM

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Abstract

The invention belongs to the technical field of adhesives and in particular relates to an adhesive for a high-speed rail and a preparation method of the adhesive. The adhesive for the high-speed rail comprises the following components in parts by weight: 20-50 parts of a polyurethane prepolymer, 10-30 parts of an epoxy resin prepolymer, 5-15 parts of a silane coupling agent, namely modified sulfonated polybenzimidazole, 1-3 parts of 2-lignocaine, 3-15 parts of a diluent and 10-42 parts of white oil.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and more specifically, the invention relates to an adhesive for high-speed rail and a preparation method thereof. Background technique [0002] There is a sliding layer between the CRTS II slab ballastless track of the high-speed railway and the bridge surface, including geomembrane, geotextile, and adhesive, referred to as "two cloth and one film", the function is to reduce the interaction between the track and the bridge. The ballastless track is laid continuously, and the box girder under it is simply supported, and one end can move under the action of the longitudinal force of the train and the temperature stress of the track, so the box girder and the track can slide against each other. However, if the base plate of the ballastless track is poured directly on the waterproof layer of the box girder, there will be a lot of friction between the beam and the plate, and sliding will be very dif...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J187/00C09J179/04C09J191/06C09J11/06C08G81/00C08G18/32
CPCC08G18/3206C08G81/00C08L2205/035C09J11/06C09J175/04C08L87/00C08L79/04C08L91/06
Inventor 许期斌黄荣
Owner 上海都昱新材料科技有限公司
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