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Rubber sealing component with low temperature resistance

A technology for rubber seals and low temperature resistance, applied in the field of rubber seals, can solve the problems of poor low temperature resistance, poor sealing performance, brittleness, etc., to achieve increased flexibility and oil-resistant volume change rate Low, the effect of reducing the molecular weight

Inactive Publication Date: 2017-11-10
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

[0002] Seals are one of the basic components of mechanical products. As long as there are organic, pumps, pipes, and valves, the existence of seals is inseparable. The quality of seals has a great impact on the overall performance of mechanical products and the safety and security of use. Durability is of great significance, and rubber seals are more widely used in these applications, and their excellent physical and mechanical properties make them have wider applications. However, the low temperature resistance of existing rubber seals Poor, brittle at low temperature, which directly leads to poor sealing performance. Therefore, how to improve the low temperature resistance of rubber seals is a technical problem that needs to be solved at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A rubber seal with low temperature resistance, made of the following components in parts by weight: EPDM rubber 50, natural rubber 50, calcium carbonate 15, paraffin wax 4, zinc oxide 2, ultrasonically modified starch 6, micron Grade perlite 6, plasticizer 3, carbon black 5.

[0018] Further, the mass ratio of the EPDM rubber to natural rubber is 1:1.

[0019] Further, the mass ratio of the ultrasonically modified starch to micron-sized perlite is 1:1.

[0020] Further, the preparation method of the ultrasonically modified starch is:

[0021] Disperse cornstarch evenly in deionized water to make a starch dispersion with a mass concentration of 15%. Stir the starch dispersion at 2500r / min at 55°C for 2 hours, and then add 0.21% of its mass to the starch dispersion. Glycolic acid, continue to stir at a speed of 2500r / min for 30min, then keep the temperature for 1 hour, and then use ultrasonic waves to process the starch dispersion for 15min, then filter, wash with deion...

Embodiment 2

[0028] A rubber seal with low temperature resistance, made of the following components in parts by weight: EPDM rubber 60, natural rubber 60, calcium carbonate 20, paraffin wax 6, zinc oxide 5, ultrasonically modified starch 8, micron Grade perlite 8, plasticizer 6, carbon black 8.

[0029] Further, the mass ratio of the EPDM rubber to natural rubber is 1:1.

[0030] Further, the mass ratio of the ultrasonically modified starch to micron-sized perlite is 1:1.

[0031] Further, the preparation method of the ultrasonically modified starch is:

[0032] Disperse cornstarch evenly in deionized water to make a starch dispersion with a mass concentration of 15%. Stir the starch dispersion at 2500r / min at 55°C for 2 hours, and then add 0.21% of its mass to the starch dispersion. Glycolic acid, continue to stir at 2500r / min speed for 30min, then keep the temperature for 1 hour, and then use ultrasonic wave to process the starch dispersion, the treatment time is 20min, then filter, us...

Embodiment 3

[0039] A rubber seal with low temperature resistance, made of the following components in parts by weight: EPDM rubber 55, natural rubber 55, calcium carbonate 18, paraffin wax 5, zinc oxide 3, ultrasonically modified starch 7, micron Grade perlite 7, plasticizer 5, carbon black 6.

[0040] Further, the mass ratio of the EPDM rubber to natural rubber is 1:1.

[0041] Further, the mass ratio of the ultrasonically modified starch to micron-sized perlite is 1:1.

[0042] Further, the preparation method of the ultrasonically modified starch is:

[0043] Disperse cornstarch evenly in deionized water to make a starch dispersion with a mass concentration of 15%. Stir the starch dispersion at 2500r / min at 55°C for 2 hours, and then add 0.21% of its mass to the starch dispersion. Glycolic acid, continue to stir at a speed of 2500r / min for 30min, then keep the temperature for 1 hour, and then use ultrasonic waves to process the starch dispersion for 18min, then filter, wash with deion...

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Abstract

The invention discloses a rubber seal with low temperature resistance, which relates to the technical field of seals and is made of the following components: EPDM rubber, natural rubber, calcium carbonate, paraffin, zinc oxide, ultrasonically modified starch, micron grade perlite, plasticizer, carbon black; the invention provides a rubber seal with low temperature resistance, which not only has good low temperature resistance, but also has good oil resistance and tear resistance.

Description

technical field [0001] The invention belongs to the technical field of seals, in particular to a rubber seal with low temperature resistance. Background technique [0002] Seals are one of the basic components of mechanical products. As long as there are organic, pumps, pipes, and valves, the existence of seals is inseparable. The quality of seals has a great impact on the overall performance of mechanical products and the safety and security of use. Durability is of great significance, and rubber seals are more widely used in these applications, and their excellent physical and mechanical properties make them have wider applications. However, the low temperature resistance of existing rubber seals Poor, brittle at low temperature, which directly leads to poor sealing performance. Therefore, how to improve the low temperature resistance of rubber seals is a technical problem that needs to be solved at present. Contents of the invention [0003] The object of the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L7/00C08L91/06C08L3/02C08K13/02C08K3/26C08K3/22C08K3/04C08K3/36C08B30/12
CPCC08L23/16C08B30/12C08K2003/2296C08K2003/265C08K2201/003C08L7/00C08L2205/035
Inventor 文有余
Owner 宁国市润丰金属制品有限公司
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