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Anti-corrosion and anti-creep pump valve seal gasket

A sealing gasket and anti-creep technology, applied in the field of pump valve gaskets, can solve problems such as pump valves not working properly, and achieve the effects of improving corrosion resistance and creep resistance, excellent comprehensive performance, and high mechanical strength

Inactive Publication Date: 2018-10-12
ANHUI SANHUAN PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The comprehensive performance of the sealing material is crucial to the normal operation of the pump valve, and the failure phenomena such as creep, cracking and friction loss of the sealing material will cause the pump valve to fail to work normally

Method used

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  • Anti-corrosion and anti-creep pump valve seal gasket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A pump valve sealing gasket, which comprises the following raw materials: 16 kg of fluorinated rubber, 7 kg of chloroether rubber, 5 kg of hydrogenated nitrile rubber, 2 kg of precipitated white carbon black, 0.3 kg of dimorphine disulfide, and 1.2 kg of modified attapulgite kg, 2,2,4-trimethyl-1,2-dihydroquinoline 1kg, 2,2'-dithiodibenzothiazole 0.15kg.

[0029] The preparation method of the modified attapulgite is as follows: add a surfactant and a coupling agent to the attapulgite, stir and mix and then transfer it to a heating kneader, the stirring speed is 50r / min, and the temperature is raised to 70°C while stirring. ℃, then stir at constant temperature for 2 hours, when the temperature of the material drops to 40 ℃, add PEG-2000, control the stirring speed to 30r / min, and discharge after stirring for 20 minutes;

[0030] Use a vibrating disc dryer to control the drying temperature to 45°C. When the moisture content of the material is less than 1%, transfer the ma...

Embodiment 2

[0035] The formula of the pump valve gasket in this embodiment is basically the same as that in Example 1, the difference is that tetramethylthiuram disulfide is selected as the vulcanizing agent, and the rest remain unchanged to prepare the pump valve gasket.

Embodiment 3

[0037] A pump valve sealing gasket, which is prepared from the following raw materials: 15kg of fluorinated rubber, 3kg of chloroether rubber, 3kg of hydrogenated nitrile rubber, 1.2kg of precipitated white carbon black, 0.2kg of dimorphine disulfide, and modified attapulgite 1.0kg, 0.8kg of 2,2,4-trimethyl-1,2-dihydroquinoline, and 0.1kg of 2,2'-dithiodibenzothiazole.

[0038] The preparation method of the modified attapulgite is as follows: add a surfactant and a coupling agent to the attapulgite, stir and mix and then transfer it to a heating kneader, the stirring speed is 50r / min, and the temperature is raised to 70°C while stirring. ℃, then stir at constant temperature for 1 hour, when the material temperature drops to 40 ℃, add PEG-2000, control the stirring speed to 30r / min, and discharge after stirring for 10 minutes;

[0039] Use a vibrating disc dryer to control the drying temperature to 45°C. When the moisture content of the material is less than 1%, transfer the ma...

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Abstract

The invention belongs to the technical field of pump valve seal gaskets and particularly relates to an anti-corrosion and anti-creep pump valve seal gasket. The seal gasket is prepared from 12-20 parts by weight of fluorinated rubber, 1-10 parts by weight of chloroether rubber, 1-9 parts by weight of hydrogenated nitrile rubber, 0.5-3 parts by weight of precipitated white carbon black, 0.1-0.5 parts by weight of a vulcanizing agent, 0.8-1.6 parts by weight of modified attapulgite, 0.6-1.3 parts by weight of an anti-aging agent and 0.05-0.35 parts by weight of an accelerator. Through mixing offluorinated rubber, chloroether rubber and hydrogenated nitrile rubber and use of modified attapulgite and precipitated white carbon black as fillers, the corrosion resistance and creep resistance ofthe seal gasket are improved. The modified attapulgite can effectively improve the mechanical strength and wear resistance of the seal gasket, thereby improving the service life of the pump valve sealgasket.

Description

technical field [0001] The invention belongs to the technical field of pump valve sealing pads, and in particular relates to an anti-corrosion and anti-creep pump valve sealing pad. Background technique [0002] The comprehensive performance of the sealing material is crucial to the normal operation of the pump valve, and the failure phenomena such as creep, cracking and friction loss of the sealing material will cause the pump valve to fail to work normally. Therefore urgently need to develop a kind of anti-corrosion anti-creep pump valve gasket. Contents of the invention [0003] The purpose of the present invention is to provide a pump valve sealing gasket, which improves the corrosion resistance and creep resistance of the sealing gasket and prolongs its service life. [0004] In order to achieve the above object, the present invention adopts the following technical solutions to achieve: [0005] An anti-corrosion and anti-creep pump valve gasket, the gasket is prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/02C08L71/03C08L15/00C08K13/06C08K9/00C08K3/36C08K3/34C08K5/3437
CPCC08L15/02C08L2201/08C08L2312/00C08L71/03C08L15/005C08K13/06C08K9/00C08K3/36C08K3/346C08K5/3437
Inventor 杨小民
Owner ANHUI SANHUAN PUMP
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