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Sealing element used for pressure measuring instrument

A technology for measuring instruments and seals, applied to chemical instruments and methods, and other chemical processes, can solve the problems of high maintenance cost, time-consuming and laborious, poor shock resistance, etc., and achieve good cross-linked structure, enhanced wear resistance, and low cost Effect

Inactive Publication Date: 2017-09-08
ANHUI RUIXIN AUTOMATION INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the rubber seal used inside has poor shock resistance and is easy to age, it needs to be returned to the factory for repair, which is time-consuming and labor-intensive, and the repair cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A seal for pressure measuring instruments proposed by the present invention, its raw materials include by weight: 110 parts of base material, 5 parts of plasticizer, 0.9 part of magnesium oxide, 1 part of zinc oxide, 16 parts of nano diatomite, nano talc 15 parts of powder, 30 parts of carbon fiber, 55 parts of hydrotalcite composite montmorillonite, 4 parts of vulcanization accelerator CZ, 2 parts of dicumyl peroxide, 2.5 parts of anti-aging agent 4010NA, and 1.5 parts of anti-aging agent 2246.

Embodiment 2

[0017] A seal for pressure measuring instruments proposed by the present invention, its raw materials include by weight: 90 parts of base material, 8 parts of plasticizer, 0.5 part of magnesium oxide, 2 parts of zinc oxide, 12 parts of nano diatomite, nano talc 25 parts of powder, 20 parts of carbon fiber, 75 parts of hydrotalcite composite montmorillonite, 2 parts of vulcanization accelerator CZ, 4 parts of dicumyl peroxide, 1.5 parts of anti-aging agent 4010NA, and 22462.5 parts of anti-aging agent.

[0018] Hydrotalcite composite montmorillonite is prepared by the following process: mix montmorillonite and sulfuric acid solution evenly, heat up, stir, cool to room temperature, add water to stir, filter, wash with water, dry to constant weight, pulverize, add hydrotalcite, silicon The sol was ultrasonically dispersed, and water glass was added to continue stirring to obtain hydrotalcite composite montmorillonite.

Embodiment 3

[0020] A seal for pressure measuring instruments proposed by the present invention, its raw materials include by weight: 95 parts of base material, 7 parts of plasticizer, 0.6 part of magnesium oxide, 1.8 parts of zinc oxide, 13 parts of nano diatomite, nano talc 22 parts of powder, 22 parts of carbon fiber, 70 parts of hydrotalcite composite montmorillonite, 2.5 parts of vulcanization accelerator CZ, 3.5 parts of dicumyl peroxide, 1.8 parts of antioxidant 4010NA, and 2.2 parts of antioxidant 2246.

[0021] The base material comprises by weight: 60 parts of natural rubber, 20 parts of butadiene rubber, and 15 parts of styrene-butadiene rubber. The plasticizer comprises by weight: 6 parts of stearic acid and 3 parts of methyl epoxyacetyl linoleate.

[0022] The hydrotalcite composite montmorillonite is prepared by the following process: mix 10 parts of montmorillonite and 70 parts of 90% sulfuric acid solution in parts by weight, heat up to 170°C, stir for 1 hour, cool to room ...

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PUM

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Abstract

The invention discloses a sealing element used for a pressure measuring instrument. The sealing element is prepared from the following raw materials in parts by weight: 90-110 parts of a base material, 5-8 parts of a plasticizer, 0.5-0.9 part of magnesium oxide, 1-2 parts of zinc oxide, 12-16 parts of nano diatomite, 15-25 parts of nano talcum powder, 20-30 parts of carbon fibers, 55-75 parts of a hydrotalcite montmorillonite composite, 2-4 parts of a vulcanization accelerator CZ, 2-4 parts of dicumyl peroxide, 1.5-2.5 parts of an anti-aging agent 4010NA and 1.5-2.5 parts of an anti-aging agent 2246. The sealing element used for the pressure measuring instrument is reasonable in formula and low in cost and has good isolation and anti-seismic effects, good ageing resistance and sealing performance, no influence on pressure calibration and long measurement service life.

Description

technical field [0001] The invention relates to the technical field of seals for instruments, in particular to a seal for pressure measuring instruments. Background technique [0002] In the pressure measuring instrument, if it is necessary to isolate the pressure medium, the diaphragm pressure remote transmission method is often used for isolation. The capillary connection between the remote diaphragm and the measuring instrument is generally used. Usually, this part of the circuit is manufactured in the instrument. The factory carries out vacuuming and filling medium. If the rubber seals used inside have poor shock resistance and are prone to aging, they need to be returned to the factory for repairs, which is time-consuming and laborious, and the repair cost is high. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention proposes a seal for pressure measuring instruments, which has a reasonable formula, lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L9/06C08K13/06C08K9/02C08K3/22C08K7/26C08K3/34C08K7/06C08K3/26C08K3/36C08K5/09C09K3/10
CPCC08L7/00C08K2003/222C08K2003/2296C08K2201/011C08L2201/08C08L2205/02C08L2205/03C09K3/10C08L9/00C08L9/06C08K13/06C08K9/02C08K3/22C08K7/26C08K3/34C08K3/346C08K7/06C08K3/26C08K3/36C08K5/09
Inventor 高凤谊
Owner ANHUI RUIXIN AUTOMATION INSTR
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