Sealing gasket for hydraulic cylinder and preparation method thereof

A technology for gaskets and hydraulic cylinders, applied in the field of gaskets and their preparation, can solve the problems of hydraulic devices not working properly, unsatisfactory sealing performance, aging cracks, etc., and achieve the effects of not being easy to expand, improving oil resistance, and increasing mechanical strength

Inactive Publication Date: 2013-11-27
WUHU YINHONG HYDRAULIC COMPONENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing gaskets have defects such as unsatisfactory sealing performance, poor wear resistance, low strength, poor aging resist

Method used

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  • Sealing gasket for hydraulic cylinder and preparation method thereof

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Embodiment Construction

[0013] A sealing gasket for a hydraulic cylinder, made of the following raw materials by weight (kg): nitrile rubber (CR322) 64, chlorohydrin rubber (H45) 165, POM 12, polyisobutylene 10, 2,4-dichloroperoxide Benzoyl 2, 2.2'-dibenzothiadisulfide 1.5, dioctyl sebacate 4, n-butyl methacrylate 5, microcrystalline paraffin 6, modified wollastonite 12, nano sepiolite 8, Calcium Sulfate Whiskers 6, Zinc Oxide 2, Magnesium Oxide 1.5, Carbon Black N339 15, Dimethyl Dithioglycolate Isooctyl Tin 1.5, Tetramethylthiuram Disulfide 2, Antiaging Agent OD 2, Antiaging Agent NBC 2 , Antioxidant 1010 2, Antioxidant 168 1.

[0014] The preparation method of described modified wollastonite is as follows:

[0015] a. Take the dried wollastonite and crush it to less than 15 μm, put it into a dispersion kettle, add deionized water three times the amount of wollastonite, and then add 3% sodium polyacrylate, 1.5% tricalcium phosphate, 2 % of cocoic acid monoethanolamide, 1% of rice husk ash, 3% of ...

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Abstract

The invention discloses a sealing gasket for a hydraulic cylinder and a preparation method thereof. The sealing gasket is prepared from the raw materials including nitrile rubber, epichlorohydrin rubber, polyformaldehyde (POM), polyisobutene, 2,4-dichlorobenzoyl peroxide, 2,2'-disulfide dibenzo thiazine, dioctyl sebacate, n-butyl methacrylate, microcrystalline wax, modified wollastonite, nano sepiolite, calcium sulfate whiskers and the like. On the basis of blending of the nitrile rubber and the epichlorohydrin rubber, POM and polyisobutene are also added, so that the performances such as the oil resistance, the temperature tolerance, the abrasive resistance, the compressive strength and the like of the rubber can be improved; and the modified wollastonite is also added, so that the dispersibility of the wollastonite in the rubber can be obviously improved; and the performances such as the mechanical strength, the oil resistance, the abrasive resistance, the high thermal resistance and the like of a seal material are improved.

Description

technical field [0001] The invention relates to a gasket and a preparation method thereof, in particular to a gasket for a hydraulic cylinder and a preparation method thereof. Background technique [0002] The gasket is an important part of the hydraulic cylinder, which is used to prevent the leakage of the working medium and the intrusion of external dust and foreign objects. The overall performance of the gasket is an important indicator to measure the quality of the hydraulic system. However, the existing gaskets have defects such as unsatisfactory sealing performance, poor wear resistance, low strength, poor aging resistance, and poor oil resistance. As a result, the hydraulic device cannot work normally, so it is urgent to develop a high-performance gasket. Contents of the invention [0003] The object of the present invention is to address the deficiencies of the prior art, to provide a hydraulic cylinder gasket with high strength, good oil resistance, good wear re...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L71/00C08L59/00C08L23/20C08K13/06C08K5/14C08K5/11C08K3/34C08K3/22C08K3/04C08K5/58C08K7/08
Inventor 张开会陶庭鸿张火生
Owner WUHU YINHONG HYDRAULIC COMPONENTS
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