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Railway turnout oil-resistant rubber base plate and preparation process thereof

A technology of oil-resistant rubber and preparation process, applied in the field of railway accessories, can solve problems such as application influence, achieve the effect of long service life, solve application influence problems, and increase service life

Inactive Publication Date: 2018-12-04
毛利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a railway turnout oil-resistant rubber backing plate and its preparation process, which has good oil resistance, solves the problem of the influence of lubricating oil on the application of the turnout rubber backing plate, increases its service life, and can further Reduce the maintenance amount of the railway engineering department to ensure the safety of the train operation; and use the injection molding machine to prepare the rubber backing plate by injection molding, which greatly improves the production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An oil-resistant rubber backing plate for a railway turnout, comprising the following raw materials in parts by weight:

[0038] 70-85 parts of polyurethane;

[0039] 20-35 parts of polybutylene terephthalate (PBT);

[0040] Nylon 15-25 parts;

[0041] 20-30 parts of carbon black;

[0042] 10-15 parts of mica powder;

[0043] 3-6 parts of paraffin oil;

[0044] 5-8 parts of zinc oxide;

[0045] 1-2 parts of stearic acid;

[0046] Anti-aging agent 2 to 8 parts;

[0047] Accelerator 1~2.5 parts;

[0048] Surface modifier 2 to 5 parts.

[0049] In this embodiment, the rubber includes the following raw materials in parts by weight:

[0050] 80 parts of polyurethane;

[0051] 30 parts of polybutylene terephthalate (PBT);

[0052] 20 parts of nylon;

[0053] 25 parts of carbon black;

[0054] 4.5 parts of paraffin oil;

[0055] 6.5 parts of zinc oxide;

[0056] 1.5 parts of stearic acid;

[0057] Anti-aging agent 5 parts;

[0058] Accelerator 2 parts;

[005...

Embodiment 2

[0069] In this embodiment, the rubber includes the following raw materials in parts by weight:

[0070] 70 parts of polyurethane;

[0071] 20 parts of polybutylene terephthalate (PBT);

[0072] 15 parts of nylon;

[0073] 20 parts of carbon black;

[0074] 10 parts of mica powder;

[0075] 3 parts paraffin oil;

[0076] 5 parts of zinc oxide;

[0077] 1 part stearic acid;

[0078] Anti-aging agent 2 parts;

[0079] Accelerator 1 part;

[0080] Surface modifier 2 parts.

[0081] The difference between the preparation process of the above-mentioned railway injection noise-reducing rubber backing plate and that of Example 1 is that the vulcanization method is adopted in step (3), and the vulcanization conditions are 180° C., 10 MPa, and the vulcanization time is 4 minutes.

Embodiment 3

[0083] In this embodiment, the rubber includes the following raw materials in parts by weight:

[0084] 85 parts of polyurethane;

[0085] 35 parts of polybutylene terephthalate (PBT);

[0086] 25 parts of nylon;

[0087] 30 parts of carbon black;

[0088] 15 parts of mica powder;

[0089] 6 parts paraffin oil;

[0090] 8 parts of zinc oxide;

[0091] 2 parts stearic acid;

[0092] Anti-aging agent 8 parts;

[0093] Accelerator 2.5 parts;

[0094] Surface modifier 5 parts.

[0095] The preparation process of the above-mentioned railway injection molding noise-reducing rubber backing plate is the same as that of Example 1.

[0096] After comparing the products of the above examples, it is found that the rubber backing plate prepared by injection molding with an injection molding machine has better physical properties than the traditional vulcanized rubber backing plate; the production cost is equal to that of the vulcanized rubber backing plate, but the production effi...

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Abstract

The invention discloses a railway turnout oil-resistant rubber base plate and a preparation process thereof, and belongs to the field of railway accessories. The railway turnout oil-resistant rubber base plate comprises the following raw materials in parts by weight: 70-85 parts of polyurethane, 20-35 parts of PBT, 15-25 parts of nylon, 20-30 parts of carbon black, 10-15 parts of mica powder, 3-6parts of paraffin oil, 5-8 parts of zinc oxide, 1-2 parts of stearic acid, 2-8 parts of an anti-aging agent, 1-2 parts of an accelerant and 2-5 parts of a surface modifier. The preparation process comprises the following steps: preparing the mixed rubber, drying the rubber, carrying out injection molding, trimming, warehousing and the like. The turnout rubber base plate has good oil resistance, the application influence problem of the lubricating oil on the turnout rubber base plate is solved, the service life of the lubricating oil is prolonged, the maintenance amount of the railway engineering department can be reduced, and the operation safety of the train can be guaranteed; the injection molding machine is adopted for injection molding to prepare the rubber base plate, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of railway accessories, in particular to an oil-resistant rubber backing plate for railway turnouts and a preparation process thereof. Background technique [0002] At present, most of the turnouts on my country's railway lines are 50, 60kg / m steel track turnouts. The turnout rubber pad is laid under the rails, and its main function is to reduce the impact and noise generated when the train is running. The turnout rubber pad is made of styrene-butadiene rubber or natural rubber, which is not oil-resistant. When the turnout is working, the switch point rail needs to move laterally. In order to move the switch point rail flexibly, the railway engineering department often lubricates the sliding bed plate under the switch point rail with oil. A turnout rubber backing plate is installed on each sliding bed plate. The turnout rubber backing plate stuck with lubricating oil, because it is not resistant to oil, will cause ...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L67/02C08L77/00C08K13/02C08K3/04C08K3/34C08K3/22C08K5/09
CPCC08K2003/2296C08L75/04C08L2205/035C08L67/02C08L77/00C08K13/02C08K3/04C08K3/34C08K3/22C08K5/09
Inventor 毛利张艳敏
Owner 毛利
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