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A kind of rapid maintenance material and preparation method thereof

A fast, polymer material technology, applied in the field of rail transit, can solve the problems that cannot be adopted on a large scale, affect the train punctuality rate and train operation map, and cannot be used for a long time, and achieve excellent dynamic load performance, good fluidity, and good Effects of fatigue resistance and impact resistance

Active Publication Date: 2022-03-22
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only a temporary measure and cannot be used for a long time, let alone on a large scale or across the entire line, otherwise it will directly affect the punctuality rate of the train and the train operation map, causing even greater problems

Method used

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  • A kind of rapid maintenance material and preparation method thereof
  • A kind of rapid maintenance material and preparation method thereof
  • A kind of rapid maintenance material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1. Preparation of epoxy-modified polymer materials

[0056] 1.1 Composition and dosage of epoxy modified polymer materials

[0057]

[0058] 1.2 The preparation method of epoxy modified polymer material is as follows:

[0059] Add P1000 (Hebei Yadong, hydroxyl value 110 mg KOH / g, f=2, molecular weight 1000), E54 (Shanghai Yueyi Chemical, epoxy equivalent 180-190g / mol) into the reaction kettle, start stirring and raise the temperature to 80°C, the vacuum pump dehydrates the reactor, and the vacuum degree is kept above 0.08 MPa. After keeping for 2 hours, remove the vacuum and cool down to room temperature. Under stirring conditions, slowly add 10 parts of MDI (Yantai Wanhua), and then raise the temperature To 95°C, react for 2-3 hours, take a sample to test the free isocyanate group, when the content is 0%, stop the reaction and discharge.

[0060] 2. Preparation of Component A

[0061] 2.1 Composition and dosage of component A

[0062]

[0063] 2.2 Preparation...

Embodiment 2

[0073] 1. Preparation of epoxy-modified polymer materials

[0074] 1.1 Composition and dosage of epoxy modified polymer materials

[0075]

[0076] 1.2 The preparation method of epoxy modified polymer material is as follows:

[0077] Add P2000 (Shandong Dongda, hydroxyl value 56 mgKOH / g, f=2, molecular weight 2000), YDF-170 (Japan Dongdu Chemical Co., Ltd., epoxy equivalent 160-180g / mol) into the reaction kettle, start stirring and Raise the temperature to 80°C, vacuum the reactor for dehydration with a vacuum pump, and keep the vacuum degree above 0.08MPa. After keeping for 2 hours, remove the vacuum and cool down to room temperature. Slowly add 12 parts of PAPI under stirring conditions, and then raise the temperature to 95°C , react for 2 to 3 hours, take a sample to test the free isocyanate group, when the content is 0%, stop the reaction and discharge.

[0078] 2. Preparation of Component A

[0079] 2.1 Composition and dosage of component A

[0080]

[0081] 2.2...

Embodiment 3

[0091] 1. Preparation of epoxy-modified polymer materials

[0092] 1.1 Composition and dosage of epoxy modified polymer materials

[0093]

[0094] 1.2 The preparation method of epoxy modified polymer material is as follows:

[0095] P1000 (Hebei Yadong, hydroxyl value 110 mg KOH / g, f=2, molecular weight 1000), P2000 (Shandong Dongda, hydroxyl value 56 mgKOH / g, f=2, molecular weight 2000), E54 (Shanghai Yue Yi Chemical, epoxy equivalent 180-190g / mol) into the reaction kettle, start stirring and raise the temperature to 80°C, the vacuum pump dehydrates the reaction kettle, and the vacuum degree is kept above 0.08Mpa. After keeping for 2 hours, remove the vacuum and lower the temperature. To room temperature, under stirring conditions, slowly add 14 parts of PAPI (Yantai Wanhua), after completion, raise the temperature to 95 ° C, react for 2 to 3 hours, take a sample to test the free isocyanate group, when the content is 0%, stop the reaction and discharge .

[0096] 2. Pr...

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Abstract

The present invention relates to a quick maintenance material and a preparation method thereof. The maintenance material is a two-component composition consisting of A component and B component, wherein, in parts by weight, the A component is composed of the following components: 20-30 parts of epoxy-modified polymer materials; 40-30 parts of one or more selected from polyether polyols, polyolefin polyols and polymer polyols with a functionality of 2-4 and a number-average molecular weight below 2000 60 parts; 0-10 parts of amino ether compounds; 0-10 parts of plasticizer; 10-50 parts of filler; 0-5 parts of catalyst; 1-5 parts of stabilizer; When the amine ether compound is different from the catalyst, it is 0 part; the B component is isocyanate. The maintenance material of the present invention can meet the physical properties of the transverse limit backing plate, and can reach the required strength within 3 hours, satisfying the requirements of opening to traffic, while reducing the slight displacement caused by the gap.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a rapid maintenance material and a preparation method thereof, in particular to a rapid maintenance material and a preparation method thereof which can be used for the failure of the transverse limit plate of a trapezoidal ballast bed. Background technique [0002] With the rapid development of my country's economy, the scale of cities is getting larger and larger, and rail transit has become a necessary "blood" for urban development. Ballastless track technology in rail transit technology is one of the core technologies of modern urban rail transit in all countries in the world. Compared with ballasted tracks, this technology has many advantages, such as making trains run at high speed and stably, saving manpower, and low maintenance costs. [0003] The trapezoidal ballast bed structure is a relatively advanced ballastless track technology. The core feature is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C08G18/40C08G18/48C08G18/58C08G18/63
CPCC09J175/08C08G18/4825C08G18/4829C08G18/4045C08G18/58C08G18/4854C08G18/632C08G18/4072
Inventor 王鑫刘力冀磊赵静存张胜龙郭超陆方斌邢小飞合阔
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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