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A shock-absorbing cushion block for high-speed railway and its manufacturing method

A shock-absorbing pad and high-speed railway technology, applied in the field of polymer composite materials, can solve the problems of high cost, complex process, and only complex process, and achieve the effects of low cost, simple process and low price

Inactive Publication Date: 2017-05-17
东莞市鹏博盛实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent CN201010284073.X has invented a microporous polyurethane elastomer shock-absorbing element for high-speed railways and its preparation method, that is, the semi-prepolymer is first synthesized, and then molded through a mold, which is complicated in process and high in cost; at the same time, the The patent also requires the use of modified nano-kaolin, which is very troublesome in pre-treatment, as a modifier for microcellular polyurethane elastomers, making the process more complicated

Method used

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  • A shock-absorbing cushion block for high-speed railway and its manufacturing method
  • A shock-absorbing cushion block for high-speed railway and its manufacturing method
  • A shock-absorbing cushion block for high-speed railway and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A material composition is:

[0032]

[0033] Component B is:

[0034] 27.8 parts of diphenylmethane diisocyanate

[0035] The concrete preparation method of polyurethane microporous elastomer cushion block comprises the following steps:

[0036] (1) Polyether polyol (29 parts of polyether polyol I with a functionality of 2 and an average molecular weight of 3000; 29 parts of polyether polyol II with a functionality of 2 and an average molecular mass of 4000; a functionality of 3 , polyether polyol III with an average molecular mass of 3000 is 8.8 parts), 1,4 butanediol, distilled water, catalyst (bis(dimethylaminoethyl) ether / dibutyltin diacetate=0.18 / 0.05), silicone oil press The ratio is mixed well, and added to the material tank A of the pouring machine; the corresponding weight of polyisocyanate is weighed and added to the B material tank of the pouring machine;

[0037] (2) Adjust the temperature of material A and material B to 45°C. After the pouring machine...

Embodiment 2

[0040] A material composition is:

[0041]

[0042] Component B is:

[0043] Diphenylmethane diisocyanate 24.1 parts

[0044] The concrete preparation method of polyurethane microporous elastomer cushion block comprises the following steps:

[0045] (1) polyether polyols (24.5 parts of polyether polyol I with a functionality of 2 and an average molecular weight of 2000, 36.8 parts of polyether polyol II with a functionality of 2 and an average molecular weight of 3000, The polyether polyol III with a functionality of 3 and an average molecular mass of 1500 is 7.3 parts), 1,4 butanediol, 3,5 diethyltoluenediamine, distilled water, catalyst (bis(dimethylaminoethyl ) ether / dibutyltin diacetate=0.22 / 0.1) and silicone oil are mixed in proportion and added to material tank A of the pouring machine; polyisocyanates of corresponding weight are weighed and added to material tank B of the pouring machine;

[0046] (2) Adjust the temperature of material A and material B to 40°C. Af...

Embodiment 3

[0049] A material composition is:

[0050]

[0051] Component B is:

[0052] 25.5 parts of diphenylmethane diisocyanate

[0053] The concrete preparation method of polyurethane microporous elastomer cushion block comprises the following steps:

[0054] (1) Polyether polyol (wherein the functional degree is 2, the polyether polyol I 8.85 parts of average molecular mass is 1000, the functional degree is 2, the polyether polyol II 52.6 parts of average molecular mass is 6000, Functionality is 3, polyether polyol III with an average molecular mass of 3000 is 8.8 parts), ethylene glycol, distilled water, catalyst (bis(dimethylaminoethyl) ether / dibutyltin diacetate=0.35 / 0.1), silicone oil Mix well according to the proportion, and add it to the material tank A of the pouring machine; weigh the corresponding weight of polyisocyanate and add it to the material tank B of the pouring machine;

[0055] (2) Adjust the temperature of material A and material B to 42.5°C. After the pour...

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Abstract

The invention relates to a polyurethane microporous elastomer damping cushion block for a high-speed railway and a production method of the damping cushion block. Raw materials of the damping cushion block comprise a component A and a component B, wherein the component A consists of 61.5 to 70.2 parts of polyether glycol, 0.18 to 0.45 part of foaming agent, 0.3 to 0.6 part of foam stabilizer, 3.1 to 9.4 parts of curing agent and 0.23 to 0.45 part of catalyst, and the component B consists of 24.1 to 27.8 parts of polyisocyanates. The component A and the component B are respectively arranged in a material tank A and a material tank B of a pouring machine, then the component A and the component B are poured into a predetermined mold, after the mold is thermally preserved for 25 to 35 minutes at the temperature of 45 to 55 DEG C, mold stripping is carried out, then the component A and the component B are cured for 10 to 14 hours at the temperature of 75 to 85 DEG C to obtain the damping cushion block. The damping cushion block is extremely excellent in low temperature resistance, i.e., the static rigidness of the damping cushion block at the temperature of -40 DEG C is extremely low, the damping cushion block has positive significance in popularization, and the comprehensive performance of the damping cushion block is obviously better than the existing damping cushion block.

Description

[0001] Technical field: [0002] This product belongs to the technical field of polymer composite materials, and particularly refers to a high-speed railway shock-absorbing pad and a manufacturing method thereof. [0003] Background technique: [0004] At present, my country's high-speed railway industry is developing rapidly. Ballastless track is basically used in my country's new railways. This track has the advantages of long service life, low maintenance cost, and high-speed and stable running of trains. However, its rigidity is large, its elasticity is low, and its shock absorption and noise reduction performance is poor. Therefore, it is necessary to adopt a kind of shock-absorbing backing plate with better elasticity to overcome this shortcoming. [0005] There are many raw materials for polyurethane materials, and different raw materials can be selected according to needs to design a suitable structure, so as to prepare materials that meet the requirements of use. Po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08G18/66C08G18/48C08J9/08C08G101/00
Inventor 叶世荣周鹏升陈尚廷赵代辉符子洋谢勇周绪红陈妃才
Owner 东莞市鹏博盛实业有限公司