KR101666055B1 - Manufacturing method of composite for gasket using the organic-inorganic hybrid composite for non-asbestos gasket with high heat resistance - Google Patents
Manufacturing method of composite for gasket using the organic-inorganic hybrid composite for non-asbestos gasket with high heat resistance Download PDFInfo
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- KR101666055B1 KR101666055B1 KR1020150073113A KR20150073113A KR101666055B1 KR 101666055 B1 KR101666055 B1 KR 101666055B1 KR 1020150073113 A KR1020150073113 A KR 1020150073113A KR 20150073113 A KR20150073113 A KR 20150073113A KR 101666055 B1 KR101666055 B1 KR 101666055B1
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
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- C08K7/14—Glass
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2190/00—Compositions for sealing or packing joints
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Abstract
The present invention relates to a process for producing a gasket using a high heat resistant organic / inorganic hybrid non-asbestos gasket composition, and more particularly, to a process for producing a gasket comprising a hydrogenated acrylonitrile butadiene rubber, ethylene propylene diene rubber, butadiene rubber, It is possible to use the gasket at a high temperature of 320 ° C or higher for the maximum continuous operating temperature of the gasket and to have a high heat resistance of 20Mpa or more in residual stress by manufacturing a gasket by heat treating a composition comprising inorganic ceramic, inorganic fibers, additives, To a method of manufacturing a gasket using the high heat resistant organic / inorganic composite non-asbestos gasket composition.
Description
The present invention relates to a process for producing a gasket by heat-treating a composition composed of a hydrogenated acrylonitrile butadiene rubber, ethylene propylene diene rubber, butadiene rubber and fluorine rubber, the composition comprising an inorganic ceramic, an inorganic fiber, an additive and a cross- And more particularly, to a method for manufacturing a gasket using the highly non-corrosive non-asbestos gasket composition having a high heat resistance and a high heat resistance.
The conventional non-asbestos gasket composition is generally prepared by kneading a nitrile rubber swollen with an organic solvent, a non-asbestos inorganic fiber, a rubber additive, a vulcanizing agent, and an inorganic filler, and heating and rolling the mixture between the hot roll and the cold roll to produce a gasket
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The patent document 1 is related to a non-asbestos-based sheet gasket, which is constructed so that fibers, graphite, and rubber are stirred with water and laminated and integrated in accordance with a hot press to produce a sheet gasket. Patent Document 2 discloses a joint sheet using fibers other than asbestos and a method of manufacturing the same, and is configured to produce a joint sheet by kneading a fiber, a rubber expanded by a solvent, an active rubber clay, or an acid clay, have. Patent Document 3 discloses a composition for forming a joint sheet, a joint sheet, and a method for producing the same, wherein the composition using non-asbestos inorganic fibers, nitrile rubber, and toluene as an organic solvent is heated and rolled between hot and cold rolls to produce a joint sheet Consists of. Patent Document 4 relates to a method of manufacturing a joint sheet, which is a method of manufacturing a joint sheet produced by putting a mixture obtained by mixing glass fibers, polyamide fibers, natural rubber dissolved in an organic solvent or a synthetic rubber and a filler between cold and hot rolls The seat is open.
However, in order to improve the mechanical strength and heat resistance of the non-asbestos gasket, it is common to use a rubber composition which is swollen in an organic solvent to mix excess filler and fibers. However, the use of a rubber composition through swelling in such an organic solvent has an advantage that an excessive amount of filler can be used, but the mechanical strength of the rubber is lowered and the heat resistance is lowered due to swelling. Further, the crosslinking method of the gasket sheet of the above-mentioned technology has a characteristic that the heat resistance is weaker than that of the peroxide crosslinking method by the sulfur crosslinking method.
Patent Document 5, which was filed and filed by the applicant of the present invention, relates to a non-asbestos sheet and a gasket composition, which comprises 60 to 80 parts by weight of an acrylonitrile butadiene rubber, 10 to 20 parts by weight of a high-density polyethylene resin, 20 to 100 parts by weight of a reinforcing fiber, 10 to 50 parts by weight of silica, 1 to 5 parts by weight of a silane coupling agent, 2 to 5 parts by weight of a metal oxide, 1 to 2 parts by weight of stearic acid, 200 to 600 parts by weight of a filler, and 2 to 5 parts by weight of a peroxide crosslinking agent by a press molding method.
However, in the case of Patent Document 5, since the peroxide cross-linking method is adopted without using an organic solvent in a press molding method by peroxide crosslinking without using an organic solvent, heat resistance is higher than conventional gasket sheet manufacturing methods using an organic solvent However, the acrylonitrile butadiene rubber, the high-density polyethylene resin, and the natural rubber used as the base material in the above patent have a problem that the heat resistance of the gasket sheet is still unsatisfactory due to the low heat-resistant temperature.
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a thermoplastic resin composition comprising a base composed of a hydrogenated acrylonitrile butadiene rubber, an ethylene propylene diene rubber, a butadiene rubber and a fluorine rubber in combination with an inorganic ceramic, The present invention aims to provide a gasket which can be used at a high temperature of 320 캜 or higher and has a high residual heat resistance of 20 Mpa or more by producing a gasket by heat treating the composition.
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The present invention provides a process for producing a gasket, which comprises the steps of: 60 to 80% by weight of hydrogenated acrylonitrile butadiene rubber; 5 to 10% by weight of ethylene propylene diene rubber; 5 to 10% by weight of butadiene rubber; and 10 to 20% Wherein the additive for the gasket composition and 3 to 10 parts by weight of the peroxide cross-linking agent are kneaded in a kneader mixer (100 parts by weight) with respect to 100 parts by weight of the base material, 10 to 50 parts by weight of the aramid fiber, 50 to 200 parts by weight of the glass fiber, Kneading at 100 to 120 ° C for 10 to 15 minutes and preparing it as a sheet in an open roll (S100); And forming the mixture on the sheet by a hot press at 150 to 170 ° C. and 100 to 150 kg / cm 2 for 5 to 10 minutes, followed by heat treatment at 150 to 250 ° C. for 0.5 to 3 hours to produce a gasket Wherein the hydrogenated acrylonitrile butadiene rubber has an acrylonitrile content of 30 to 40 wt% and a Mooney viscosity (ML 1 + 4 , 100 DEG C) of 40 to 80, The ethylene propylene diene rubber has a Mooney viscosity [ML 1 + 4 (125 ° C)] in the range of 30 to 50 and a diene content of 3 wt% or less. The butadiene rubber has a Mooney viscosity [ML 1 + 4 100 ° C)] of 30 to 45, and the fluorine rubber has a Mooney viscosity [ML 1 + 4 (121 ° C)] of 30 to 50 and a fluorine content of 66 to 71% The inorganic filler may be used alone or in combination of two or more of kaolin, barium sulfate or mica, Characterized in that it comprises 5 to 20 parts by weight of a metal oxide, 1 to 2 parts by weight of stearic acid, 5 to 20 parts by weight of a zinc acrylate and 5 to 30 parts by weight of titanium oxide with respect to 100 parts by weight of the base material. A method of manufacturing a gasket using a non-asbestos gasket composition is a solution to the problem.
The present invention has an effect that the maximum continuous operating temperature of the gasket can be used at a high temperature of 320 DEG C or more, and the residual stress has a high heat resistance of 20 Mpa or more.
1 is a flowchart showing a method of manufacturing a gasket using a high heat resistant organic / inorganic composite non-asbestos gasket composition
The present invention relates to a method for manufacturing a gasket using a high heat resistant organic / inorganic composite non-asbestos gasket composition, and only a part necessary for understanding the technical structure of the present invention will be described, It will be omitted.
First, the high heat resistant organic / inorganic hybrid non-asbestos gasket composition according to the present invention will be described as follows.
The high heat resistant organic / inorganic hybrid non-asbestos gasket composition according to the present invention comprises 60 to 80% by weight of hydrogenated acrylonitrile butadiene rubber, 5 to 10% by weight of ethylene propylene diene rubber, 5 to 10% by weight of butadiene rubber, 10 to 50 parts by weight of an aramid fiber, 50 to 200 parts by weight of a glass fiber, 300 to 600 parts by weight of an inorganic filler, 5 to 20 parts by weight of a metal oxide, 1 to 2 parts by weight of stearic acid, 5 to 20 parts by weight of cincolded acrylate, 5 to 20 parts by weight of titanium oxide and 3 to 10 parts by weight of a peroxide crosslinking agent.
The hydrogenated acrylonitrile butadiene rubber is preferably used in an amount of 60 to 80% by weight in order to obtain 100 parts by weight of the base material. If the amount is less than 60% by weight, the oil resistance of the gasket tends to deteriorate. If the amount is more than 80% by weight, there is a problem that the heat resistance improving effect is deteriorated. The hydrogenated acrylonitrile butadiene rubber used in the present invention has an acrylonitrile content of 30 to 40% by weight in consideration of oil resistance, a Mooney viscosity (ML 1 + 4 , 100 ° C) of 40 to 80 in consideration of compound processability Is preferably used. On the other hand, the hydrogenated acrylonitrile butadiene rubber (HNBR) is an already known material prepared by performing selective and controlled hydrogenation reaction to NBR. The degree of hydrogenation is very variable according to the amount of catalyst and reaction conditions, But all known hydrogenated acrylonitrile butadiene rubbers can be applied.
The ethylene propylene diene rubber is preferably used in an amount of 5 to 10% by weight in order to achieve 100 parts by weight of the base material for improving the heat resistance. If the amount is less than 5% by weight, the heat resistance of the gasket is insufficient. If the amount is more than 20% by weight, the oil resistance is lowered and the workability is lowered. The ethylene propylene diene rubber used in the present invention is preferably a material having a Mooney viscosity [ML 1 + 4 (125 ° C)] of 30 to 50 and a diene content of 3% by weight or less for improving heat resistance.
The butadiene rubber is preferably used in an amount of 5 to 10% by weight in order to achieve 100 parts by weight of the base material in order to improve the heat resistance. When the amount is less than 5% by weight, the heat resistance of the gasket is insufficient. When the amount is more than 10% by weight, the oil resistance is lowered and the workability is lowered. The butadiene rubber used in the present invention preferably has a Mooney viscosity [ML 1 + 4 (100 ° C)] of 30 to 45 in order to improve compound processability.
The fluorine rubber is preferably used in an amount of 10 to 20% by weight in order to improve the heat resistance in order to obtain 100 parts by weight of the base material. If the amount is less than 10% by weight, the heat resistance of the gasket is insufficient. If the amount is more than 20% by weight, the workability is deteriorated. The fluororubber used in the present invention is preferably a material having a Mooney viscosity [ML 1 + 4 (121 ° C)] of 30 to 50 and a fluorine content of 66 to 71% by weight for improving the heat resistance.
The aramid fiber used in the present invention is preferably used in an amount of 10 to 50 parts by weight based on 100 parts by weight of the base. Less than 10 parts by weight of the aramid fiber is poor in reinforcing effect, and when it is more than 50 parts by weight, heat resistance is poor.
The glass fiber used in the present invention is preferably used in an amount of 50 to 200 parts by weight based on 100 parts by weight of the substrate. When the amount is less than 50 parts by weight, the effect of improving heat resistance is insufficient. When the amount is more than 200 parts by weight, There is a problem that the workability is lowered.
The inorganic filler used in the present invention is inorganic ceramic, used alone or in combination of two or more of kaolin, barium sulfate or mica, and 300 to 600 parts by weight based on 100 parts by weight of the base material is used. If the amount is less than 300 parts by weight, heat resistance of the gasket tends to deteriorate. If the amount is more than 600 parts by weight, workability of the compound tends to deteriorate.
The additive and the peroxide crosslinking agent for use in the present invention are not limited to specific types and amounts as additives and cross-linking agents that are already widely used in the technical field, and various known additives and crosslinking agents that can constitute the gasket composition Can be applied.
As an example, 5 to 20 parts by weight of a metal oxide, 1 to 2 parts by weight of stearic acid and 5 to 30 parts by weight of titanium oxide may be used for 100 parts by weight of the substrate, .
In addition, in addition to the above, it is also possible to use 5 to 20 parts by weight of cinchedacrylate relative to 100 parts by weight of the substrate. When the amount is less than 5 parts by weight, the effect of improving the crosslinkability of the gasket composition deteriorates and the effect of improving heat resistance deteriorates. The flexibility of the sheet is poor, and there is a problem of surface bubble generation in forming the gasket sheet.
Meanwhile, in the present invention, a peroxide crosslinking agent may be used for crosslinking the compound, and it is preferable to use 3 to 10 parts by weight based on 100 parts by weight of the substrate. When the amount is less than 3 parts by weight, If it exceeds the weight portion, the flexibility of the gasket sheet is deteriorated, and there is a problem that the mechanical strength is lowered due to the scorch during processing. The crosslinking agent used in the present invention is preferably an organic peroxide compound. Examples of the organic peroxide crosslinking agent include 2,5-bis (tert-butylperoxy) -2,5-dimethyl- Bis (tert-butylperoxy) -2,5-dimethyl-hexene, dibenzoyl peroxide, bis (tertbutylperoxyisopropyl) benzene, butyl 4,4- 1,1-bis (tert-butylperoxy) 3,3,5-trimethyl chlorohexane, tert-butyl peroxybenzoate, lauryl peroxide, dicumyl peroxide and the like can be used.
Next, a method of manufacturing the gasket using the high heat resistant organic / inorganic composite non-asbestos gasket composition will be described.
The method for producing a gasket using the high heat resistant organic / inorganic hybrid non-asbestos gasket composition according to the present invention is characterized in that a gasket is produced by a method comprising the steps of: preparing a gasket comprising a hydrogenated acrylonitrile butadiene rubber, ethylene propylene diene rubber, butadiene rubber, (S100) of kneading inorganic fibers, inorganic filler, additive for gasket composition, and peroxide crosslinking agent using a kneader and forming it into a sheet in an open roll mill, a step (S100) Molding the mixture using a hot press at a high temperature and a high pressure, and then heat-treating the mixture to produce a final gasket sheet (S200).
In more detail, as described above, the rubber composition of the present invention comprises 60 to 80% by weight of hydrogenated acrylonitrile butadiene rubber, 5 to 10% by weight of ethylene propylene diene rubber, 5 to 10% by weight of butadiene rubber and 10 to 20% A process for producing a laminate comprising the steps of: 10 to 50 parts by weight of an aramid fiber, 50 to 200 parts by weight of glass fiber, 300 to 600 parts by weight of an inorganic filler, 5 to 20 parts by weight of a metal oxide, 1 to 2 parts by weight of stearic acid, 5 to 20 parts by weight of a titanium oxide, 5 to 20 parts by weight of a titanium oxide and 3 to 10 parts by weight of a peroxide crosslinking agent are kneaded in a kneader mixer at 100 to 120 ° C for 10 to 15 minutes, S100), and the prepared sheet-like mixture is molded using a hot press at 150 to 170 ° C and 100 to 150 kg / cm 2 for 5 to 10 minutes and then heat-treated at 150 to 250 ° C for 0.5 to 3 hours to produce a gasket (S200).
Since each composition used in step S100 has already been described above, a detailed description thereof will be omitted. In addition, the kneading conditions in the step S100 may already be applied to the conventional art.
On the other hand, in step S200, the sheet-like mixture is formed using a hot press and then heat-treated at 150 to 250 ° C for 0.5 to 3 hours. If the heat-treatment condition is a heat treatment for less than 0.5 hour in the temperature range, The effect of improving the heat resistance of the sheet is insufficient, and if it exceeds 3 hours, the flexibility of the gasket sheet is deteriorated and the compression / restoration ratio is lowered.
Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited by the following examples.
(Example 1)
20 parts by weight of an aramid fiber, 50 parts by weight of glass fibers, 10 parts by weight of an acrylonitrile butadiene rubber, 70 parts by weight of a hydrogenated acrylonitrile butadiene rubber, 10 parts by weight of ethylene propylene diene rubber, 10 parts by weight of butadiene rubber, A composition composed of 200 parts by weight of kaolin, 150 parts by weight of barium sulfate, 50 parts by weight of mica, 5 parts by weight of metal oxide, 1 part by weight of stearic acid, 10 parts by weight of zinc oxide, 10 parts by weight of titanium oxide and 5 parts by weight of peroxide crosslinking agent, The kneaded mixture was kneaded in a kneader at 100 to 120 DEG C for about 12 minutes to prepare a compound. The finished compound is then homogeneously blended in an open roll mill to produce a compound on a 2 mm sheet. The thus-prepared sheet-like compound was put into a mold having a mold thickness of 2 mm, press molded at 160 DEG C under a pressing condition of 150 kg / cm < 2 > for about 10 minutes and heat treated at 200 DEG C for 1 hour to manufacture an inorganic- do.
(Example 2)
10 parts by weight of aramid fibers, 150 parts by weight of glass fibers, 10 parts by weight of water-soluble polymers, 100 parts by weight of a base composed of 60% by weight of hydrogenated acrylonitrile butadiene rubber, 10% by weight of ethylene propylene diene rubber, 10% by weight of butadiene rubber, A composition consisting of 300 parts by weight of kaolin, 250 parts by weight of barium sulfate, 50 parts by weight of mica, 5 parts by weight of metal oxide, 1 part by weight of stearic acid, 10 parts by weight of zinc cyanide, 10 parts by weight of titanium oxide and 5 parts by weight of peroxide cross- The kneaded mixture was kneaded in a kneader at 100 to 120 DEG C for about 12 minutes to prepare a compound. The finished compound is then homogeneously blended in an open roll mill to produce a compound on a 2 mm sheet. The thus-prepared sheet-like compound was put into a mold having a mold thickness of 2 mm, press molded at 160 DEG C under a pressing condition of 150 kg / cm < 2 > for about 10 minutes and then subjected to heat treatment at 150 DEG C for 3 hours to manufacture an inorganic- do.
(Example 3)
50 parts by weight of aramid fibers, 200 parts by weight of glass fibers, 100 parts by weight of an acrylonitrile butadiene rubber, 80 parts by weight of hydrogenated acrylonitrile butadiene rubber, 5 parts by weight of ethylene propylene diene rubber, 5 parts by weight of butadiene rubber and 10 parts by weight of fluorine rubber, A composition composed of 150 parts by weight of kaolin, 100 parts by weight of barium sulfate, 50 parts by weight of mica, 10 parts by weight of metal oxide, 1 part by weight of stearic acid, 10 parts by weight of zinc oxide, 10 parts by weight of titanium oxide and 5 parts by weight of peroxide cross- And kneaded in a kneader at 100 to 120 DEG C for about 12 minutes to prepare a compound. The finished compound is then homogeneously blended in an open roll mill to produce a compound on a 2 mm sheet. The thus-prepared sheet-like compound was put into a mold having a mold thickness of 2 mm and press molded at 160 DEG C under a pressing condition of 150 kg / cm < 2 > for about 10 minutes and then subjected to heat treatment at 250 DEG C for 0.5 hour to manufacture an inorganic- do.
(Comparative Example 1)
20 parts by weight of aramid fiber, 100 parts by weight of glass fiber, 200 parts by weight of kaolin, 150 parts by weight of barium sulfate, 50 parts by weight of mica, 5 parts by weight of metal oxide, 1 part by weight of stearic acid, 10 parts by weight of cadmyl acrylate, 10 parts by weight of titanium oxide and 5 parts by weight of a peroxide crosslinking agent were kneaded in a compound kneader at 100 to 120 DEG C for about 12 minutes to prepare a compound. The finished compound is then homogeneously blended in an open roll mill to produce a compound on a 2 mm sheet. The thus-prepared sheet-like compound is put into a mold having a mold thickness of 2 mm, and press-molded under press conditions of 160 캜 and 150 kg / cm 2 for about 10 minutes to produce a gasket sheet.
(Comparative Example 2)
10 parts by weight of aramid fiber, 150 parts by weight of glass fiber, 200 parts by weight of kaolin, 200 parts by weight of barium sulfate, 50 parts by weight of mica, 5 parts by weight of metal oxide, and 1 part by weight of stearic acid were added to 100 parts by weight of hydrogenated acrylonitrile butadiene rubber , 10 parts by weight of cincolded acrylate, 10 parts by weight of titanium oxide and 5 parts by weight of a peroxide crosslinking agent were kneaded in a compound kneader at 100 to 120 DEG C for about 12 minutes to prepare a compound. The finished compound is then homogeneously blended in an open roll mill to produce a compound on a 2 mm sheet. The thus-prepared sheet-like compound was put into a metal mold having a thickness of 2 mm, press molded at 160 DEG C under a pressure of 150 kg / cm < 2 > for about 10 minutes and then subjected to heat treatment at 200 DEG C for 0.5 hour to manufacture an inorganic- do.
(Comparative Example 3)
10 parts by weight of aramid fiber, 50 parts by weight of glass fiber, 150 parts by weight of kaolin, 50 parts by weight of ethylene glycol, 10 parts by weight of ethylene-propylene-diene rubber, and 10 parts by weight of fluorine rubber were added to 80 parts by weight of hydrogenated acrylonitrile butadiene rubber, , 50 parts by weight of mica, 10 parts by weight of metal oxide, 1 part by weight of stearic acid and 5 parts by weight of peroxide crosslinking agent were kneaded in a compound kneader at 100 to 120 DEG C for about 12 minutes to prepare a compound . The finished compound is then homogeneously blended in an open roll mill to produce a compound on a 2 mm sheet. The thus-prepared sheet-like compound was put into a metal mold having a thickness of 2 mm, press molded at 160 DEG C under a pressure of 150 kg / cm < 2 > for about 10 minutes and then subjected to heat treatment at 200 DEG C for 0.5 hour to manufacture an inorganic- do.
The compositions of Examples 1 to 3 and Comparative Examples 1 to 3 are summarized in Table 1 below.
1) HNBR (hydrogenated acrylonitrile butadiene rubber)
2) NBR (acrylonitrile butadiene rubber)
3) BR (butadiene rubber)
4) EPDM (ethylene propylene diene rubber)
5) FKM (fluorine rubber)
6) Zinc Oxide (Zinc Oxide)
7) Stearic acid (stearic acid)
8) TiO 2 (titanium oxide)
9) ZDA (Zinc diacrylate)
10) Kaolin (kaolin)
11) BaSO 4 (barium sulfate)
12) Mica (Mica)
13) Aramid pulp (aramid fiber)
14) Glass fiber (glass fiber)
15) DCP (crosslinking agent)
The properties of the gasket compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 3 were evaluated in accordance with the following test methods, and the results are shown in Table 2.
1) Residual stress: Measured using the BS 7531 method.
2) Maximum continuous temperature: recommended pressure (unless otherwise specified, 400kgf / cm 2 defined) after the three days the temperature holding a corresponding gasket in the set point mounted, and then cooled to room temperature, held for 10 minutes at pressure 10kgf / cm 2 Temperature measurement without back-leakage
3) Tensile strength: Measured using ASTM F152 method.
As shown in the above Table 2, the organic-inorganic hybrid compositions shown in Examples 1 to 3 according to the present invention exhibit superior results to those of conventional non-asbestos gaskets and can be regarded as gasket compositions having excellent mechanical strength. On the other hand, in the case of Comparative Example 1, the acrylonitrile rubber composition ratio of the base material is 100 parts by weight, which causes a problem of poor heat resistance. In the case of Comparative Example 2, the hydrogenated acrylonitrile butadiene rubber of the present invention comprises 60 to 80% by weight of hydrogenated acrylonitrile butadiene rubber, 5 to 10% by weight of ethylene propylene diene rubber, 5 to 10% by weight of butadiene rubber, It was found that the heat resistance of the gasket was deteriorated by failing to fall within the range of 10 to 20 wt% of the fluorine rubber. Comparative Example 3 was found to be unsuitable for use as a product of a gasket sheet requiring heat resistance by failing to use an inorganic filler, zinc acrylate or the like in the scope of use of the present invention.
As described above, the method of manufacturing a gasket using the high heat resistant organic / inorganic composite non-asbestos gasket composition according to the present invention has been described with reference to the preferred embodiments described above and its superiority is confirmed. However, It will be understood that various modifications and alterations may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
Based on 100 parts by weight of a base composed of 60 to 80% by weight of hydrogenated acrylonitrile butadiene rubber, 5 to 10% by weight of ethylene propylene diene rubber, 5 to 10% by weight of butadiene rubber and 10 to 20% by weight of fluorine rubber, 50 to 200 parts by weight of glass fiber, 300 to 600 parts by weight of an inorganic filler and 3 to 10 parts by weight of an additive for a gasket composition and 3 to 10 parts by weight of a peroxide cross-linking agent are mixed in a kneader mixer at 100 to 120 ° C for 10 to 15 minutes Kneading and kneading the same into an open roll to form a sheet (S100); And
Molding the mixture in the sheet form using a hot press at 150 to 170 ° C. and 100 to 150 kg / cm 2 for 5 to 10 minutes, and then heat-treating the mixture at 150 to 250 ° C. for 0.5 to 3 hours to produce a gasket (S200 ), ≪ / RTI >
Wherein the hydrogenated acrylonitrile butadiene rubber has an acrylonitrile content of 30 to 40 wt% and a Mooney viscosity (ML 1 + 4 , 100 DEG C) of 40 to 80,
The ethylene propylene diene rubber has a Mooney viscosity [ML 1 + 4 (125 캜)] in the range of 30 to 50, a diene content of 3%
The butadiene rubber has a Mooney viscosity [ML 1 + 4 (100 ° C)] of 30 to 45,
The fluorine rubber has a Mooney viscosity [ML 1 + 4 (121 캜)] of 30 to 50, a fluorine content of 66 to 71%
The inorganic filler may be used alone or in combination of two or more in kaolin, barium sulfate or mica,
The additive for the gasket composition is characterized by comprising 5 to 20 parts by weight of a metal oxide, 1 to 2 parts by weight of stearic acid, 5 to 20 parts by weight of a cincodiacrylate and 5 to 30 parts by weight of titanium oxide with respect to 100 parts by weight of the substrate A method for manufacturing a gasket using a high heat resistant organic / inorganic composite non-asbestos gasket composition.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018117290A1 (en) * | 2016-12-21 | 2018-06-28 | 제일 이엔에스 주식회사 | Highly heat-resistant organic/inorganic composite asbestos-free gasket composition, and method for manufacturing gasket by using same |
| RU2680508C1 (en) * | 2018-05-22 | 2019-02-21 | федеральное государственное унитарное предприятие "Федеральный научно-производственный центр "Прогресс" (ФГУП "ФНПЦ "Прогресс") | Elastomeric composition |
| CN113234288A (en) * | 2021-05-11 | 2021-08-10 | 绍兴市上虞舜东橡塑制品有限公司 | High-heat-resistance ethylene propylene rubber tube based on multi-dimensional nano-structure material modification and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05162157A (en) | 1991-01-28 | 1993-06-29 | Nichias Corp | Manufacture of joint sheet |
| JPH10265765A (en) * | 1997-03-24 | 1998-10-06 | Nichias Corp | Joint sheet and its production |
| JP2000034467A (en) | 1998-07-21 | 2000-02-02 | Nippon Valqua Ind Ltd | Joint sheet-forming composition, joint sheet and its preparation |
| JP2005232365A (en) * | 2004-02-20 | 2005-09-02 | Nippon Valqua Ind Ltd | Method for manufacturing nonasbestos joint sheet and nonasbestos joint sheet using the same |
| JP2005281463A (en) | 2004-03-29 | 2005-10-13 | Nichias Corp | Joint sheet and method for producing the same |
| JP2005344037A (en) * | 2004-06-04 | 2005-12-15 | Nichias Corp | Hydrogenated nbr rubber composition |
| JP2008274053A (en) | 2007-04-26 | 2008-11-13 | Nippon Pillar Packing Co Ltd | Sheet gasket |
| KR100888495B1 (en) * | 2007-10-08 | 2009-03-12 | 평화오일씰공업주식회사 | Method of manufacturing rubber for oil seal |
| KR101326558B1 (en) | 2011-07-11 | 2013-11-20 | 한국신발피혁연구원 | A composite for non-asbestos sheet and gasket |
-
2015
- 2015-05-26 KR KR1020150073113A patent/KR101666055B1/en active IP Right Grant
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05162157A (en) | 1991-01-28 | 1993-06-29 | Nichias Corp | Manufacture of joint sheet |
| JPH10265765A (en) * | 1997-03-24 | 1998-10-06 | Nichias Corp | Joint sheet and its production |
| JP2000034467A (en) | 1998-07-21 | 2000-02-02 | Nippon Valqua Ind Ltd | Joint sheet-forming composition, joint sheet and its preparation |
| JP2005232365A (en) * | 2004-02-20 | 2005-09-02 | Nippon Valqua Ind Ltd | Method for manufacturing nonasbestos joint sheet and nonasbestos joint sheet using the same |
| JP2005281463A (en) | 2004-03-29 | 2005-10-13 | Nichias Corp | Joint sheet and method for producing the same |
| JP2005344037A (en) * | 2004-06-04 | 2005-12-15 | Nichias Corp | Hydrogenated nbr rubber composition |
| JP2008274053A (en) | 2007-04-26 | 2008-11-13 | Nippon Pillar Packing Co Ltd | Sheet gasket |
| KR100888495B1 (en) * | 2007-10-08 | 2009-03-12 | 평화오일씰공업주식회사 | Method of manufacturing rubber for oil seal |
| KR101326558B1 (en) | 2011-07-11 | 2013-11-20 | 한국신발피혁연구원 | A composite for non-asbestos sheet and gasket |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018117290A1 (en) * | 2016-12-21 | 2018-06-28 | 제일 이엔에스 주식회사 | Highly heat-resistant organic/inorganic composite asbestos-free gasket composition, and method for manufacturing gasket by using same |
| RU2680508C1 (en) * | 2018-05-22 | 2019-02-21 | федеральное государственное унитарное предприятие "Федеральный научно-производственный центр "Прогресс" (ФГУП "ФНПЦ "Прогресс") | Elastomeric composition |
| CN113234288A (en) * | 2021-05-11 | 2021-08-10 | 绍兴市上虞舜东橡塑制品有限公司 | High-heat-resistance ethylene propylene rubber tube based on multi-dimensional nano-structure material modification and preparation method thereof |
| CN113234288B (en) * | 2021-05-11 | 2022-07-08 | 绍兴市上虞舜东橡塑制品有限公司 | High-heat-resistance ethylene propylene rubber tube based on multi-dimensional nano-structure material modification and preparation method thereof |
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