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High-speed railway door system rubber sealing strip protection grease composition and preparation method thereof

A technology of rubber sealing strip and composition, applied in the field of rubber sealing, can solve the problems of high oil separation rate, poor high and low temperature stability, etc., and achieve excellent high and low temperature stability, good high and low temperature stability, and good sealing effect. Effect

Inactive Publication Date: 2017-03-08
青岛市资源化学与新材料研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a high-speed iron door system rubber sealing strip protective grease composition and a preparation method thereof, which solves the problem that the protective grease composition in the prior art has poor high and low temperature stability and high oil separation rate and cannot meet the sealing requirements of the high-speed iron door system

Method used

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  • High-speed railway door system rubber sealing strip protection grease composition and preparation method thereof

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preparation example Construction

[0029] The preparation method of a protective grease composition for rubber sealing strips of high-speed iron door system of the present invention comprises the following steps: (1) Take base oil, heat up to 130-150°C, add thickener, stir evenly, heat-preserve and activate for 1-3 hours , continue to heat up to 155~165°C, refining for 0.3~0.5h; (2) Cool the refined product obtained in step (1) to no more than 90°C, add fillers, metal corrosion inhibitors and antioxidants, Stir well and grind into fat.

[0030] Specifically, in the step (2), the refined product is cooled to 80-90° C. and ground in a three-roll mill.

Embodiment 1

[0032]Add 60% by weight of perfluoropolyether base oil with a pour point of -45°C and a viscosity of 80cSt at 40°C to a 250mL beaker with mechanical stirring, raise the temperature to 135°C, and add 30% by weight of polyether base oil Stir the tetrafluoroethylene micro-powder thickener evenly, heat and activate it for 1 hour, heat up to 160°C for 0.5 hour refining; then, cool down to below 90°C, add 9% by weight of nano-calcium carbonate filler, 0.5% of anti-rust agent sulfonic acid Calcium, 0.5% by weight antioxidant pentaerythritol ester, after stirring evenly, grind into fat A through three-roll mill.

Embodiment 2

[0034] Add 50% by weight of perfluoropolyether base oil with a pour point of -80°C and a viscosity of 20cSt at 40°C to a 250mL beaker with mechanical stirring, raise the temperature to 130°C, and add 40% by weight of polyether base oil Stir the tetrafluoroethylene micro-powder thickener evenly. After 2 hours of heat preservation and activation, heat up to 165°C for refining for 0.3h; then, cool down to 90°C, add 8% by weight of MCA filler, 1% by weight of fumed silica filler, 0.3% calcium sulfonate antirust agent, 0.2% by weight antirust agent benzotriazole, 0.5% by weight antioxidant pentaerythritol ester, stirred evenly, and ground into fat B by three-roll mill.

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Abstract

The invention discloses a high-speed railway door system rubber sealing strip protection grease composition and a preparation method thereof, and belongs to the technical field of sealing greases, wherein the raw materials comprise, by weight, 40-80% of base oil, 10-50% of a thickener, 0-20% of a filler, 0.5-5% of a metal corrosion inhibitor, and 0-5% of an antioxidant, The invention further provides a preparation method of the protection grease composition, wherein the raw materials are subjected to thermal insulation activation, heating smelting and stirring grinding to prepare the high-speed railway door system rubber sealing strip protection grease composition. According to the present invention, the inert substance is used to form the perfluoropolyether lubricating grease type high-speed railway door system sealing grease, such that the obtained grease composition has characteristics of extremely low oil separation rate, white color, no pollution, and excellent high-low temperature stability; the good sealing property is ensured while the good protection performance is provided for the sealing glue strip and the metal member, such that the grease composition is the ideal high-speed railway door system sealing grease; and the preparation method is simple, is easy to control, and is suitable for industrialization.

Description

technical field [0001] The invention belongs to the technical field of rubber sealing, in particular to a high-speed iron door system rubber sealing strip protective grease composition and a preparation method thereof. Background technique [0002] During the high-speed operation of the high-speed rail, the pressure difference between the interior and exterior of the car body is large, especially when passing through tunnels, culverts and other occasions where the external air pressure changes, the huge pressure difference may cause local air resistance and affect the stability of the car body. . At the same time, the pressure difference caused by poor sealing will also cause unstable air pressure in the car and increase the noise of the car. Therefore, the airtightness of the high-speed rail is a key indicator affecting the operation of the high-speed rail. [0003] At present, most parts of the high-speed rail use fixed sealing units, only the door system is an open unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N30/06C10N30/08C10N30/10C10N30/12C10N40/34
CPCC10M169/00C10M2201/062C10M2201/08C10M2201/10C10M2207/026C10M2207/283C10M2213/0606C10M2213/062C10M2213/0626C10M2215/222C10M2215/223C10M2219/044C10N2030/06C10N2030/08C10N2030/10C10N2030/12C10N2030/26C10N2030/36C10N2030/64C10N2040/34
Inventor 王晓波赵改青
Owner 青岛市资源化学与新材料研究中心
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