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Rubber sealing element with good anti-aging performance

A rubber seal, anti-aging technology, applied in other chemical processes, chemical instruments and methods, etc., can solve problems that affect the service life of seals, harsh use environments, and reduce the life of rubber seals, so as to reduce activity and improve mechanics Properties, effects of improving tensile strength and tear strength

Inactive Publication Date: 2017-12-29
宁国市润丰金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the lubrication system of mechanical equipment contains acid and alkali components, it is easy to penetrate into the seal, thereby causing the expansion of the seal and affecting the service life of the seal; in addition, due to the harsh use environment, especially the thermal aging caused by high temperature, Significantly reduced life of rubber seals

Method used

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  • Rubber sealing element with good anti-aging performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A rubber seal with good aging resistance, made of the following components in parts by weight: rubber base material 120, silicone oil 3, filler 30, crosslinking agent 1.2, lubricant 0.1, vulcanizing agent 2.5, plasticizer 0.2 , carbon black 1, functional additive 1.4;

[0019] The preparation method of the functional auxiliary agent is as follows: dissolving 0.12 mol of pyrogallol in isoamyl alcohol, adding 0.12 mol of sodium hydroxide and heating and stirring under the protection of nitrogen, when the temperature rises to the point where sodium hydroxide reacts with pyrogallol to form When the white suspension is present, add 0.04mol dichloroethyl ether dropwise within 16min, then stir for 2 hours, cool to 55°C, then add 0.12mol sodium hydroxide to heat and stir, and then add 0.06mol dichloroethyl ether at the same time ether, stirred for 2 hours, and then filtered to remove the solids to obtain a filtrate, which was evaporated to remove the solvent under reduced press...

Embodiment 2

[0029] A rubber seal with good aging resistance, made of the following components in parts by weight: rubber base material 120, silicone oil 5, filler 50, crosslinking agent 1.5, lubricant 0.3, vulcanizing agent 2.8, plasticizer 0.5 , carbon black 3, functional additive 1.8;

[0030] The preparation method of the functional auxiliary agent is as follows: dissolving 0.12 mol of pyrogallol in isoamyl alcohol, adding 0.12 mol of sodium hydroxide and heating and stirring under the protection of nitrogen, when the temperature rises to the point where sodium hydroxide reacts with pyrogallol to form When the white suspension is present, add 0.04mol dichloroethyl ether dropwise within 16min, then stir for 2 hours, cool to 55°C, then add 0.12mol sodium hydroxide to heat and stir, and then add 0.06mol dichloroethyl ether at the same time ether, stirred for 2 hours, and then filtered to remove the solids to obtain a filtrate, which was evaporated to remove the solvent under reduced press...

Embodiment 3

[0040] A rubber seal with good aging resistance, made of the following components in parts by weight: rubber base material 120, silicone oil 4, filler 40, crosslinking agent 1.3, lubricant 0.2, vulcanizing agent 2.6, plasticizer 0.4 , carbon black 2, functional additive 1.5;

[0041] The preparation method of the functional auxiliary agent is as follows: dissolving 0.12 mol of pyrogallol in isoamyl alcohol, adding 0.12 mol of sodium hydroxide and heating and stirring under the protection of nitrogen, when the temperature rises to the point where sodium hydroxide reacts with pyrogallol to form When the white suspension is present, add 0.04mol dichloroethyl ether dropwise within 16min, then stir for 2 hours, cool to 55°C, then add 0.12mol sodium hydroxide to heat and stir, and then add 0.06mol dichloroethyl ether at the same time ether, stirred for 2 hours, and then filtered to remove the solids to obtain a filtrate, which was evaporated to remove the solvent under reduced press...

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Abstract

The invention discloses a rubber seal with good aging resistance, relates to the technical field of rubber seals, and is made of the following components: rubber base material, silicone oil, filler, crosslinking agent, lubricant, vulcanizing agent and plasticizer , carbon black, functional auxiliary agent; the functional auxiliary agent prepared by the present invention not only has a certain vulcanization accelerator function to the rubber seal system, but also can absorb the small molecule by-products generated in the vulcanization process of styrene-butadiene rubber. Its own specific functional groups participate in the anti-aging effect of styrene-butadiene rubber, which can improve the cross-linked structure of styrene-butadiene rubber to a greater extent and improve its mechanical properties; at the same time, it can improve the tensile strength and tear strength of rubber seals to a certain extent .

Description

technical field [0001] The invention belongs to the technical field of rubber seals, in particular to a rubber seal with good aging resistance. Background technique [0002] Rubber seals are a general basic component in sealing devices Rubber seals are a type of rubber products widely used in sealing technology. Because of its very small elastic modulus, high elongation, and air resistance, it is widely used for installation on various mechanical equipment. Because the lubrication system of mechanical equipment contains acid and alkali components, it is easy to penetrate into the seal, thereby causing the expansion of the seal and affecting the service life of the seal; in addition, due to the harsh use environment, especially the thermal aging caused by high temperature, Significantly reduces the life of the rubber seals. Contents of the invention [0003] The object of the present invention is to provide a rubber seal with good aging resistance to solve the existing pr...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L83/04C08K13/06C08K9/00C08K9/04C08K9/02C08K3/34C08K5/12C08K3/36C08K3/04C09K3/10
CPCC08L9/06C08L2201/08C08L2312/00C09K3/10
Inventor 文有余
Owner 宁国市润丰金属制品有限公司
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