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Environment-friendly, low-cost and high-performance railway brake pipe

A technology for brake pipes and railways, which is applied in the direction of tubular articles, the arrangement of pipes, synthetic resin layered products, etc., can solve the problems of high temperature drying tunnel, unenvironmental protection and high cost

Active Publication Date: 2021-09-10
NANJING ORIENTLEADER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vinylon thread is used for the braiding layer, which is costly. At the same time, the vinylon thread is easy to resinize during vulcanization, and there is a risk of tube explosion
The hose uses a total of two layers of intermediate glue and three layers of glue, which is not environmentally friendly, and the production process requires high-temperature ovens, high energy consumption, high manufacturing costs, and complicated manufacturing processes. The glue solvent is a flammable liquid and is toxic and harmful. The risk factor high
At present, the production efficiency of the hose is low, and the hose needs to be parked for a long time after weaving

Method used

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  • Environment-friendly, low-cost and high-performance railway brake pipe
  • Environment-friendly, low-cost and high-performance railway brake pipe
  • Environment-friendly, low-cost and high-performance railway brake pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The raw materials and parts by weight of the sizing material in this embodiment are as shown in Table 1, and are prepared by the following method:

[0036] Step (1), cooling the internal mixer with water, controlling the temperature of the working room of the internal mixer to not exceed 50°C, adding base material, anti-aging agent RD, anti-aging agent 4010NA, protective wax 654, zinc oxide, stearic acid, white carbon black , binder RS, coupling agent silicon 69, knead for 30-60 seconds;

[0037] Step (2), adding plasticizer DOS and carbon black N550, mixing for 3 to 5 minutes;

[0038] Step (3), add vulcanizing agent (sulfur S), accelerator CZ, binder A, mix, and discharge the rubber compound after the temperature reaches 110°C;

[0039] Step (4), move the sizing material to an open mill for thinning out the sheet, and cool to room temperature.

Embodiment 2

[0041] The raw materials and consumption (parts by weight) of the sizing material in this embodiment are as shown in Table 1, and the preparation method is the same as in Example 1.

Embodiment 3

[0043] The raw materials and consumption (parts by weight) of the sizing material in this embodiment are as shown in Table 1, and the preparation method is the same as in Example 1.

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PUM

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Abstract

The invention discloses a rubber material for preparing an inner rubber layer, an outer rubber layer or middle rubber sheets of a railway brake pipe. The rubber material comprises the following raw materials in parts by weight: 100 parts of a base material, 3-5.5 parts of an anti-aging agent, 60-120 parts of carbon black, 10-30 parts of white carbon black, 5 parts of zinc oxide, 1.5-2 parts of stearic acid, 5-20 parts of a plasticizer, 3-5 parts of a coupling agent, 5-8 parts of an adhesive, 2-5 parts of sulfur and 1-2 parts of an accelerant. The base material is one or more of ethylene propylene diene monomer, natural rubber, butadiene rubber and nitrile rubber. The invention further discloses a railway brake pipe which sequentially comprises an inner rubber layer and an outer rubber layer from inside to outside, three braid layers are arranged on each of the inner rubber layer and the outer rubber layer, and a middle rubber layer is arranged between every two adjacent braid layers. The inner rubber layer, the middle rubber layers and the outer rubber layer are all made of the rubber material in an extrusion mode, and the braid layers are formed by weaving polyester threads. The normal-temperature stiffness, low-temperature flexibility, bursting strength, weather resistance and aging resistance of the railway brake pipe are superior to those of a chloroprene rubber hose.

Description

technical field [0001] The invention belongs to the field of processing rubber composite materials, in particular to the field of rail transit braking, and relates to a rubber material used for preparing inner and outer rubber or intermediate rubber sheets of railway brake pipes, and an environmentally friendly, low-cost rubber made of the rubber material. Cost performance rail brake pipe. Background technique [0002] The rail transit brake hose is an important safety component of the rail vehicle braking system. It is used to transmit compressed air medium in the rail transit braking system, and transmit high-pressure gas to each wheel and caliper to generate braking force. At present, the structure of the rail transit brake hose is: the inner layer is made of neoprene, the three braided layers are all vinylon threads, there is glue and intermediate glue between the two adjacent braided layers, and the outermost braided layer is also coated. There is glue, and the outer g...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L7/00C08L9/00C08K13/04C08K7/26C08K3/04B32B1/08B32B25/12B32B25/16B32B25/14B32B25/08B32B27/02B32B27/36B60T17/04
CPCC08L23/16C08L7/00C08L9/00B32B1/08B32B25/12B32B25/16B32B25/14B32B25/10B32B5/028B60T17/04C08L2201/08C08L2203/18B32B2260/021B32B2260/046B32B2262/0276B32B2597/00C08K13/04C08K7/26C08K3/04
Inventor 宋亚平王亮燕陶平刘寅段旭磊康鑫商成光卢丽婷
Owner NANJING ORIENTLEADER TECH CO LTD
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