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Oil-resistant and low-temperature-resistant rubber material as well as preparation method and application thereof

A technology of rubber materials and low temperature resistance, applied in the field of oil resistant rubber materials, can solve the problem that rubber sealing rings cannot have excellent oil resistance and low temperature resistance at the same time, achieve excellent oil resistance, improve low temperature resistance, and have a wide range of applications

Active Publication Date: 2022-08-05
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defect and deficiency that the existing rubber sealing ring cannot have excellent oil resistance and low temperature resistance at the same time, and provide an oil-resistant and low-temperature resistant rubber material, and the rubber sealing ring prepared with this rubber material can simultaneously Taking into account oil resistance and low temperature resistance, it also has excellent tensile and compressive properties

Method used

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  • Oil-resistant and low-temperature-resistant rubber material as well as preparation method and application thereof
  • Oil-resistant and low-temperature-resistant rubber material as well as preparation method and application thereof
  • Oil-resistant and low-temperature-resistant rubber material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1 Preparation of oil-resistant and low-temperature-resistant multifunctional rubber sealing ring

[0075] S1. Calculated in parts by weight, the first nitrile rubber (content of acrylonitrile is 35%) 35 parts, the second nitrile rubber (content of acrylonitrile is 26%) 65 parts, zinc oxide 5 parts, stearin 1.5 parts of acid, 2 parts of saturated fatty acid ester dispersant, 1 part of protective wax, 2 parts of ketone amine antioxidant, 2 parts of p-phenylenediamine antioxidant were put into a 75L internal mixer for mixing, and then added after pressing the top bolt for 40s Quickly press 65 parts of furnace black and 53 parts of semi-reinforced furnace black for kneading, press the top bolt for 100s, add 30 parts of inorganic filler and 15 parts of cold-resistant plasticizer and knead, press the top bolt for 100s, and then raise the top Clean the bolt, press the top bolt to continue mixing, press the top bolt for 130s, and then heat to 150 °C to obtain the master...

Embodiment 2

[0077] Example 2 Preparation of oil-resistant and low-temperature-resistant multifunctional rubber sealing ring

[0078] The difference with Example 1 is that the content of acrylonitrile in the first nitrile-butadiene rubber is 34%, the content of acrylonitrile in the second nitrile-butadiene rubber is 26%, and the addition amount of each component is different, and the specific addition amount is shown in Table 1. As shown, the conditions of the remaining steps are the same as those in Example 1.

[0079] Table 1: The addition amount of each component in Example 2 (calculated in parts by weight)

[0080]

Embodiment 3

[0081] Example 3 Preparation of oil-resistant and low-temperature-resistant multifunctional rubber sealing ring

[0082] The difference from Example 1 is that the content of acrylonitrile in the first nitrile-butadiene rubber is 32%, the content of acrylonitrile in the second nitrile-butadiene rubber is 29%, and the addition amount of each component is different, and the specific addition amount is shown in Table 2 As shown, the conditions of the remaining steps are the same as those in Example 1.

[0083] Table 2: The addition amount of each component in Example 3 (calculated in parts by weight)

[0084]

[0085]

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Abstract

The invention belongs to the technical field of oil-resistant rubber materials, and particularly relates to an oil-resistant and low-temperature-resistant rubber material as well as a preparation method and application thereof. According to the invention, two kinds of nitrile rubber with different acrylonitrile contents are adopted and reasonably proportioned, and the cold-resistant plasticizer is adopted to further improve the low temperature resistance of the rubber sealing ring, so that the prepared rubber sealing ring has excellent functions of oil resistance, low temperature resistance, tension resistance and compression resistance at the same time, the low-temperature brittleness can reach-40 DEG C or below, and the service life of the rubber sealing ring is prolonged. And the use value can still be ensured in severe cold areas in winter, such as Xinjiang and northeast China, overseas Russian and Northern European, and the application is wide.

Description

technical field [0001] The invention belongs to the technical field of oil-resistant rubber materials. More specifically, it relates to an oil-resistant and low-temperature-resistant rubber material and its preparation method and application. Background technique [0002] Rubber is a highly elastic polymer material with excellent elasticity at room temperature, which can produce large deformation under the action of a small external force, and can return to its original shape after removing the external force. When the rubber is placed in various pipes and valves to connect, it can play an excellent sealing effect, and is often made into a sealing ring. [0003] Conventional sealing rings are required to have high tensile properties, aging resistance, low compression set and low compression stress relaxation properties, so they generally only need to be prepared from natural rubber and EPDM rubber, but they do not have oil resistance and low temperature resistance. , and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K5/11C08K3/26C08K3/04
CPCC08L9/02C08K2003/265C08L2205/025C08K5/11C08K3/26C08K3/04Y02A20/20
Inventor 李景宾徐政委余华林宋科明
Owner GUANGDONG LIANSU TECH INDAL
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