A kind of preparation method of anti-attenuation gasket

An anti-attenuation and gasket technology, which is applied in the field of anti-attenuation gasket preparation, can solve the problems of general sealing performance improvement of composite boards, etc., and achieve the effects of outstanding creep relaxation resistance, good resilience, and good flexibility

Active Publication Date: 2021-06-15
南阳天一密封股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention was developed for special environmental sealing requirements. It requires the product to be resistant to ozone, excellent low temperature performance, fuel oil and freon and other media. For this reason, the invention uses chloroether rubber to improve the low temperature performance, freon immersion resistance and ozone resistance of nitrile rubber. ; Neoprene rubber is used to improve the bonding performance and Freon resistance of nitrile rubber, but the above modification has a general effect on the improvement of the sealing performance of the composite board

Method used

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  • A kind of preparation method of anti-attenuation gasket
  • A kind of preparation method of anti-attenuation gasket

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A preparation method of an anti-attenuation gasket, the anti-attenuation gasket comprises a spring steel strip and a foamed rubber layer, and the foamed rubber layer is arranged on one side of the spring steel strip, comprising the following steps:

[0028] Step S1: Carry out surface treatment to the spring steel strip, in order:

[0029] Cutting: Cut the spring steel strip to the required specifications;

[0030] Degreasing: Use degreasing agent to degrease the surface of the spring steel strip, and the degreasing temperature is: 50°C;

[0031] Water washing: wash the spring steel strip in running water;

[0032] Phosphating: use phosphating solution to phosphate the spring steel strip at a temperature of 23°C;

[0033] One-time drying: The spring steel strip is dried once, and the temperature of the first-time drying is 80°C;

[0034] Glue application: apply adhesive evenly on the surface of the spring steel strip;

[0035] Secondary drying: The spring steel belt ...

Embodiment 2

[0049] A preparation method of an anti-attenuation gasket, the anti-attenuation gasket comprises a spring steel strip and a foamed rubber layer, and the foamed rubber layer is arranged on both sides of the spring steel strip, comprising the following steps:

[0050] Step S1: Carry out surface treatment to the spring steel strip, in order:

[0051] Cutting: Cut the spring steel strip to the required specifications;

[0052] Degreasing: Use degreasing agent to degrease the surface of the spring steel strip, and the degreasing temperature is 55°C;

[0053] Water washing: wash the spring steel strip in running water;

[0054] Phosphating: use phosphating solution to phosphate the spring steel strip, and the treatment temperature is 25°C;

[0055] One-time drying: The spring steel strip is dried once, and the temperature of the first-time drying is 90°C;

[0056] Glue application: apply adhesive evenly on the surface of the spring steel strip;

[0057] Secondary drying: Seconda...

Embodiment 3

[0064] A preparation method of an anti-attenuation gasket, the anti-attenuation gasket comprises a spring steel strip and a foamed rubber layer, and the foamed rubber layer is arranged on both sides of the spring steel strip, comprising the following steps:

[0065] Step S1: Carry out surface treatment to the spring steel strip, in order:

[0066] Cutting: Cut the spring steel strip to the required specifications;

[0067] Degreasing: use degreasing agent to degrease the surface of the spring steel strip, the degreasing temperature is: 52 ℃;

[0068] Water washing: wash the spring steel strip in running water;

[0069] Phosphating: use phosphating solution to phosphate the spring steel strip at a temperature of 15°C;

[0070] One-time drying: The spring steel strip is dried once, and the temperature of the first-time drying is 105°C;

[0071] Glue application: apply adhesive evenly on the surface of the spring steel strip;

[0072] Secondary drying: Secondary drying of the...

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Abstract

The invention provides a method for preparing an anti-attenuation gasket, which belongs to the technical field of sealing material preparation. A method for preparing an anti-attenuation gasket, the anti-attenuation gasket includes a spring steel strip and a foamed rubber layer, and the foamed rubber layer is arranged on one or both sides of the spring steel strip, it is characterized in that it includes the following Steps: surface treatment of the spring steel strip; preparation of foamed rubber; compounding, curing, inspection, stamping and beading of the foamed rubber and the spring steel strip in sequence to obtain a finished product. The foamed rubber of the present invention is tightly bonded to the spring steel belt, and is not easy to peel off. The product is environmentally friendly, non-toxic and odorless, has a large amount of compression, good resilience, and good flexibility, and the skeleton adopts a spring steel belt. The honeycomb structure can maintain long-term elasticity, and the torque will not decay for a long time.

Description

technical field [0001] The invention belongs to the technical field of sealing gasket preparation, in particular to a preparation method of an anti-attenuation gasket. Background technique [0002] Gaskets are widely used in the joints of pipes, valves, and flanges in industries such as automobiles, machinery, petrochemicals, metallurgy, electric power, and coal mines to seal media such as fuel, lubricating oil, acid-base, high-pressure air, water, steam, and organic solvents. . However, due to the characteristics of the material after the bolt is tightened, the material has a certain creep relaxation rate, resulting in a certain torque attenuation, resulting in a decrease in sealing performance. In order to make the gasket have a long-term sealing ability, in addition to changing the ordinary bolts with gaskets to flange bolts, the support surface of the flange surface bolts is designed at an angle. During the locking process, when the support surface contacts the base sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/02B29B11/02C08L9/02C08L91/06C08K13/02C08K3/22C08K5/09C08K5/18C08K3/04C08K3/26C08K5/12C08K3/06C08J9/10B29L7/00B29L9/00B29L31/26
Inventor 赵红祥王帆陈宇翔李莉张新战王熙王征征
Owner 南阳天一密封股份有限公司
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