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Fluororubber cloth clamp combination V seal ring and method for producing the same

A fluororubber and sealing ring technology is applied in the field of fluororubber interlayer V-shaped sealing ring and its preparation, which can solve the problems of general hydrolysis resistance of ionic cross-linking bonds, scrapped gel, limited heat resistance of NBR, etc. Achieve the effect of good molding operation performance, moderate solvent evaporation rate and long service life

Active Publication Date: 2008-07-16
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is usually made of nitrile rubber (NBR) cotton fiber cloth. Due to the limited heat resistance of NBR, it can only be used for a long time in an environment below 100°C.
However, the temperature of the hydraulic system in the metallurgical industry is often high, which limits the application of the V-shaped seal combined with NBR material
Chinese utility model patent CN 2620137Y discloses a high temperature and high pressure fluorine rubber cloth combined V-shaped ring. To the manufacturing method of this fluororubber cloth combined V-ring
In the state of solution, this kind of mixed rubber has a short stable life, usually about 7 to 24 hours. After this time, the glue will gel and be scrapped.
In addition, the hydrolysis resistance of ionic crosslinks is average, which limits the application of ordinary fluororubbers in high-temperature water-glycol hydraulic media.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of fluorine rubber compound

[0030] Prepare materials (parts by weight) according to the following formula: 100 parts of peroxide vulcanized fluororubber FC2260 (3M Tailiang company fluororubber), 20 parts of diatomaceous earth, 20 parts of calcium carbonate, 5 parts of zinc oxide, 3 parts of iron red, 2, 4 parts of 5-dimethyl-2,5-bis(tert-butyl peroxide) hexane, 5 parts of triallyl isocyanurate, 1 part of fatty acid derivative HT-2902 (Struktol company product); Add the above raw materials into an open mill and mix them uniformly at 90°C to obtain a fluororubber compound;

[0031] (2) Preparation of fluororubber glass fiber cloth

[0032] Take by weighing 50Kg of the above-mentioned fluororubber compound, thin it into 2mm flakes, separate it into strips and put it into a 200-liter mixer, add it according to methyl isobutyl ketone: butyl acetate: No. 120 solvent gasoline=150:70: The mixed solvent 125Kg of the mass ratio configuration of 30, stirs 4 ho...

Embodiment 2

[0037] (1) Preparation of fluorine rubber compound

[0038] Prepare materials according to the following formula (parts by weight): 100 parts of peroxide vulcanized fluororubber P457 (Solvay's fluororubber), 50 parts of barium sulfate, 3 parts of zinc oxide, 2 parts of iron red, 2,5-dimethyl- 3 parts of 2,5-bis(tert-butylperoxy)hexane, 6 parts of triallyl isocyanurate, 0.5 part of octadecylamine; put the above raw materials into an open mixer and mix them evenly at 80°C Obtain fluororubber compound rubber;

[0039] (2) Preparation of fluororubber glass fiber cloth

[0040] Weigh 50Kg of the above-mentioned fluororubber compound, thin it into 0.5mm flakes, separate it into strips and put it into a 200-liter mixer, add it according to the formula of methyl isobutyl ketone: butyl acetate: No. 120 solvent gasoline=100:50 : 175Kg of mixed solvent configured at a mass ratio of 20, stirred for 2 hours to obtain fluorine glue; the obtained fluorine glue was coated on CW400 type glas...

Embodiment 3

[0045] (1) Preparation of fluorine rubber compound

[0046] Prepare materials (parts by weight) according to the following formula: 100 parts of peroxide vulcanized fluororubber G-801 (Dakin Corporation fluororubber), 10 parts of calcium carbonate, 10 parts of talcum powder, 5 parts of zinc oxide, 5 parts of iron red, 2 , 5 parts of 5-dimethyl-2,5-bis(tert-butyl peroxide) hexane, 4 parts of triallyl isocyanurate, 1.5 parts of palm wax; Mix uniformly at 85°C to obtain fluorine rubber compound;

[0047] (2) Preparation of fluororubber glass fiber cloth

[0048] Weigh 50Kg of the above-mentioned fluororubber compound, thin it into 1.5mm flakes, separate it into strips and put it into a 200-liter mixer, add it according to the ratio of methyl isobutyl ketone: butyl acetate: No. 120 solvent gasoline=150:100 : 135Kg of mixed solvent configured at a mass ratio of 50, stirred for 3 hours to obtain fluorine glue; the obtained fluorine glue was coated on CW300 type glass fiber cloth (...

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PUM

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Abstract

The invention provides a V-shaped seal ring with a fluororubber canvas combination which is characterized in that the seal ring is produced by materials with the following portions by weight: 100 portions of peroxide vulcanized fluororubber, 20-50 portions of light-colored filler, 3-5 portions of zinc oxide, 2-5 portions of iron oxide red, 3-5 portions of 2,5-dimethyl-2,5-di-(tert-butyl peroxide) hexane, 4-6 portions of triallyl glycicy isocyanuratel and 0.5-1.5 portion of processing agent. A preparation method of the invention indicates that the materials with the portions by weight are first made into fluororubber dry mix which is then dissolved in mixed solvent so as to prepare adhesive cement; then the adhesive cement is dip coated on glass fiber cloth to prepared the fluororubber glass fiber canvas which is then die pressed by a vulcanized product combination to prepare the V-shaped seal ring with the fluororubber canvas combination. In addition, the obtained V-shaped seal ring with the fluororubber canvas combination has long service life and is resistant to high temperature, high pressure and hydraulic safety fluid.

Description

technical field [0001] The invention belongs to the technical field of sealing, and in particular relates to a V-shaped sealing ring combined with fluororubber cloth and a preparation method thereof. Background technique [0002] Water-glycol fire-resistant hydraulic fluid is formulated with various special additives such as water, ethylene glycol, lubricant, vapor-liquid phase rust inhibitor and defoamer. It is safer to use on hydraulic equipment near high-temperature heat sources or open flames. Even if it burns, it will not spread flames, and it can self-extinguish when the fire source is evacuated. At present, the main equipment using water-ethylene glycol fire-resistant hydraulic fluid at home and abroad include: continuous casting and rolling systems in the metallurgical industry and continuous mining machines in mines; various submerged arc furnaces and non-ferrous casting and forging systems, high-temperature reaction kettles in the chemical industry And various hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L15/02C08K5/29C03C25/12F16J9/28C08K5/14C08K3/00
Inventor 骆瑞静彭兵肖风亮王勇吴文涛
Owner GUANGZHOU MECHANICAL ENG RES INST
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