WO2012137724A1 - フッ素ゴム組成物 - Google Patents
フッ素ゴム組成物 Download PDFInfo
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- WO2012137724A1 WO2012137724A1 PCT/JP2012/058902 JP2012058902W WO2012137724A1 WO 2012137724 A1 WO2012137724 A1 WO 2012137724A1 JP 2012058902 W JP2012058902 W JP 2012058902W WO 2012137724 A1 WO2012137724 A1 WO 2012137724A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1009—Fluorinated polymers, e.g. PTFE
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/50—Inorganic non-macromolecular ingredients
- C08L2555/54—Sulfur or carbon black
Definitions
- the present invention relates to a fluororubber composition. More specifically, the present invention relates to a fluororubber composition having excellent metal corrosion resistance.
- Conventional general-purpose fluoro rubbers have excellent resistance as oil-based seal materials such as engine oil and fuel oil, but are suitable as water-based seal materials such as cooling water and LLC (long life coolant).
- silicone rubber, EPDM or special grade fluorine rubber is used as a sealing material for a cooling device such as a cylinder liner, an oil cooler, or a radiator.
- silicone rubber has problems such as insufficient strength and poor hydrolysis resistance.
- hypochlorous acid may cause deterioration of the rubber due to chlorine that is usually added to tap water, and black foreign matter may be mixed in the water or the peripheral equipment may be polluted. There is a blackening phenomenon.
- tap water contains many ionic substances other than hypochlorous acid, and the deterioration of the rubber by these various ions is not limited to the case where it is used for direct contact with tap water, and various of these various The same problem arises when using EPDM in transporting or storing solutions containing ions.
- binary fluororubbers such as those obtained by polyol vulcanization of vinylidene fluoride / hexafluoropropene binary copolymer rubber, are superior in terms of compression set but are inferior in chemical stability, so hot water With respect to water vapor and water vapor, problems such as cutting of crosslinking points by hydrolysis may be considered.
- the fluororubber of a ternary fluororubber such as tetrafluoroethylene / vinylidene fluoride / hexafluoropropene ternary copolymer rubber, improves the fuel oil resistance as compared with the fluororubber of a binary, The value of compression set tends to deteriorate.
- amine-vulcanized products there are also cases where the rubber is corroded by the amine contained in the fuel oil and causes a curing failure generally called an amine crack.
- a fluororubber composition containing calcium oxide, magnesium oxide and thermal black and bituminous coal filler is vulcanized and formed in the presence of a polyol-based vulcanizing agent and then heat-treated at a temperature of about 250 to 300 ° C.
- the fluorororubber vulcanized molded article obtained by such a method is excellent in compression set resistance characteristics and compression cracking resistance under high temperature environment, it is a polyol vulcanized product, so it is water resistant, The water vapor resistance is not at a satisfactory level (Patent Document 1).
- the applicant of the present invention is also a fluororubber composition using a general-purpose ternary fluororubber, which can give a vulcanizate excellent in water resistance, water vapor resistance, fuel oil resistance and compression set resistance characteristics.
- a crosslinkable tetrafluoroethylene / vinylidene fluoride / hexafluoropropene terpolymer rubber having a fluorine content of 67 to 69% by weight (A) carbon black having a specific surface area of 5 to 20 m 2 / g,
- a fluororubber composition comprising (B) a bituminous filler, (C) zinc oxide or hydrotalcite and (D) an organic peroxide and used as a molding material for a fuel oil-based sealing material in contact with a fuel oil (Patent Document 2).
- fluororubber has excellent properties in heat resistance, chemical resistance and the like, it is widely used as a sealing material for automobile fuel and the like.
- fuels containing ether and alcohol have come to be used in view of the high efficiency of automobile fuels and emission control, etc., and metal parts that come in contact with fluorine rubber such as the inside of pipes accordingly Has a problem of corrosion.
- Patent Documents 3 to 5 fluorine rubber compositions containing metal oxides have been proposed (Patent Documents 3 to 5), and the evaluation method is to confirm the effect of preventing corrosion by contact with SPCC or mild steel. There is.
- the above-mentioned fluororubber composition is not sufficient to prevent its corrosion but it is not sufficient, and it is necessary to improve its corrosion resistance.
- the amount of the acid agent is increased, deterioration of compression set, dispersion failure at the time of kneading, and the like occur.
- the objects of the present invention are carbon black, bituminous fillers, organic peroxides of specific surface area specific to peroxide-crosslinkable tetrafluoroethylene / vinylidene fluoride / hexafluoropropene ternary copolymer rubber having a certain amount of fluorine content It is an object of the present invention to provide a rubber composition containing a substance etc. which is excellent in metal corrosion resistance.
- the object of the present invention is to use 100 parts by weight of peroxide-crosslinkable tetrafluoroethylene / vinylidene fluoride / hexafluoropropene terpolymer rubber having a fluorine content of 64% by weight or more, (A) specific surface area of 5 to 20 m 2 5 to 90 parts by weight of carbon black / g, 5 to 40 parts by weight of (B) bituminous fine powder, 1 to 30 parts by weight of (C) hydrophilicity imparting talc and at least 1 to 20 parts by weight of hydrophilicity imparting clay And (D) 0.5 to 6 parts by weight of an organic peroxide, and is achieved by a fluororubber composition used as a molding material of a fuel oil-based sealant in contact with a fuel oil.
- the fluororubber composition according to the present invention has excellent metal corrosion resistance without compounding an acid acceptor comprising a metal oxide, and thus various kinds of fuel oil C, ether-containing fuel oil, alcohol-containing fuel oil, etc. It is suitably used as a molding material of a seal material exhibiting excellent metal corrosion resistance to metals in contact with fuel oil.
- ternary fluororubber tetrafluoroethylene [TFE] / vinylidene fluoride [VdF] / hexafluoropropene [HFP] ternary copolymer rubber is used.
- this ternary copolymer rubber there are both of a peroxide-crosslinkable type and a polyol-vulcanizable type, and from the viewpoint of water resistance, the former type is used in the present invention.
- the peroxide-crosslinkable ternary copolymer rubber can be obtained by coexisting saturated or unsaturated iodine-containing and / or bromine-containing compound at the time of copolymerization reaction.
- the ternary copolymer rubber should have a fluorine content of 64% by weight or more, preferably in the range of 67 to 69% by weight.
- the more the VdF component in the copolymer rubber the more the fluorine content tends to decrease, while the more the TFE component in the copolymer rubber, the more the fluorine content tends to increase.
- a ternary copolymer rubber having a fluorine content as defined above can be formed.
- the ternary copolymer rubber having such a fluorine content is, for example, 30 to 1 mole%, preferably 20 to 10 mole%, TFE 80 to 50 mole%, preferably 75 to 60 mole%, and HFP 30 to 30 mole%. It has a copolymer composition of 15 mol%, preferably 20 to 15 mol%.
- a ternary copolymer rubber having a lower fluorine content is used, amine resistance, water resistance, and hot water resistance become inferior in all, while a ternary copolymer rubber having a fluorine content higher than this is used. And, the value of the compression set after the air aging test is bad, and the low temperature characteristics become remarkably inferior.
- the Mooney viscosity ML 1 + 4 (121 ° C.) is preferably in the range of about 20 to 80.
- ternary copolymer rubber at least one of (A) carbon black, (B) bituminous fine powder and (C) hydrophilicity imparting talc and hydrophilicity imparting clay is added as an essential additive, D) Peroxide crosslinking with organic peroxide is carried out.
- Component (A) Component carbon black having a specific surface area (measured by a nitrogen adsorption specific surface area method) of 5 to 20 m 2 / g, such as thermal black, more specifically MT carbon black (specific surface area 6 m 2 / g, Specific gravity 1.8, oil absorption 0.4 cm 3 / g, average particle diameter 450 nm) FT carbon black (specific surface area 13 to 19 m 2 / g, specific gravity 1.8, oil absorption 0.5 cm 3 / g, average particle diameter 90 to 206 nm), etc. Used. When carbon black having a specific surface area other than these is used, the crosslink density decreases, and not only the compression set resistance characteristics are degraded, but also the adhesiveness to the mating material housing is increased.
- Component (B) Bituminous fine powder generally has an average particle size of about 1 to 10 ⁇ m, preferably about 5 to 7 ⁇ m and a specific gravity of 1.25 to 1.45, such as Austin Black 325 (manufactured by Coal Fillers, average particle size 6 ⁇ m Specific gravity 1.32), mineral black 325 BA (a product of Keystone Filley, average particle diameter 6 ⁇ m, specific gravity 1.22), etc. are used.
- a specific gravity of 1.25 to 1.45 such as Austin Black 325 (manufactured by Coal Fillers, average particle size 6 ⁇ m Specific gravity 1.32), mineral black 325 BA (a product of Keystone Filley, average particle diameter 6 ⁇ m, specific gravity 1.22), etc. are used.
- the component carbon black and the component (B) bituminous fine powder are used in a weight ratio of about 6 to 1/6, preferably about 3 to 1/3. If it is used at a rate outside this range, compression set and strength will be degraded.
- both of them are used in a total amount of about 10 to 100 parts by weight, preferably about 20 to 50 parts by weight, per 100 parts by weight of the ternary copolymer rubber, and if the use ratio is less than this, heat resistance is obtained A decrease is observed, while when it is used at a higher ratio, the hardness is increased and the formability is also reduced, resulting in poor practicability.
- the total amount of component (B) bituminous fine powder with component (C) hydrophilized talc and at least one of clay is about 10 to 50 parts by weight per 100 parts by weight of ternary copolymer rubber, Preferably, it is used in a proportion of about 10 to 40 parts by weight. If the total amount of these components is less than this, sufficient metal corrosion resistance can not be obtained, while if it is used in a proportion more than this, the viscosity of the fluororubber composition becomes too high and there is a tendency to interfere with kneading and molding. Sometimes.
- hydrophilicity imparting talc as the component (C), talc or the like treated at a high temperature of 1100 ° C. or higher is used.
- the commercially available Asada flour product Enstack 24 or the like is used as it is.
- the hydrophilicity imparting talc is used in a proportion of about 1 to 30 parts by weight, preferably about 1 to 25 parts by weight, per 100 parts by weight of the ternary copolymer rubber.
- the clay surface is preferably a silane coupling agent, preferably unsaturated such as vinyltrichlorosilane, vinyltriethoxysilane, vinyltris ( ⁇ -methoxyethoxy) silane, ⁇ -methacryloxypropyltrimethoxysilane, etc.
- a clay surface-treated with a group-containing silane coupling agent is used.
- commercially available Shiroishi calcium product ST-100, Engelhard product Translink 37, etc. are used as they are.
- the hydrophilicity imparting clay is used in a proportion of about 1 to 20 parts by weight, preferably about 1 to 15 parts by weight, per 100 parts by weight of the ternary copolymer rubber.
- the hydrophilicity-imparting clay means that it becomes completely hydrophilic without losing the properties of the base aluminum anhydrosilicate or hydrous magnesium silicate, and in particular, the surface treatment with a silane coupling agent In the case of the clays mentioned, hydrophilic in this sense is completely achieved.
- the acid-acceptor which consists of zinc oxide or a hydrotalcite is not only made an essential component, but it is added and used suitably fillers, such as a talc and a clay, as an arbitrary component as needed.
- fillers such as a talc and a clay, as an arbitrary component as needed.
- hydrophobic talc or clay which is described as being able to be used but is not provided with hydrophilicity as described herein, as shown in the results of Comparative Examples 8 to 10 described later. And hardly have metal corrosion resistance.
- the organic peroxide (D) can be used without particular limitation as long as it can be generally used for peroxide crosslinking of rubber, for example, di-tert-butyl peroxide, dicumyl peroxide, tert-butyl Kumi.
- (E) component polyfunctional unsaturated compound such as triallyl isocyanurate, triallyl cyanurate, triallyl trimellitate, trimethylolpropane trimethacrylate, N, N'- It is desirable to use about 1 to 10 parts by weight, preferably about 2 to 8 parts by weight, of m-phenylene bismaleimide or the like per 100 parts by weight of the ternary copolymer rubber. If the use ratio is less than this, a sufficient crosslinking density may not be obtained, while if it is used at more than this, a vulcanized molded product can not be obtained due to foaming, or even if it is obtained, the elasticity and elongation decrease. It will be.
- Reinforcing agents such as white carbon used as general compounding agents of rubber other than the above essential components in the rubber composition, graphite, fillers such as calcium silicate, stearic acid, palmitic acid, paraffin wax Processing aids, anti-aging agents, plasticizers and the like are appropriately added and used as needed.
- Preparation of the composition is carried out by kneading each of the above components using a closed kneader such as a kneader, an intermix or a Banbury mixer, or an open roll, and the kneaded material is divided into sheets, or an extruder, After being formed into a predetermined shape using a Bawell apparatus etc., it is vulcanized and molded for about 1 to 30 minutes at about 150 to 230 ° C. using a compression press, an injection molding machine, an injection molding machine etc. The secondary vulcanization is performed at 250 ° C., preferably about 200 to 230 ° C., for about 5 to 48 hours, preferably about 15 to 30 hours, using an air oven or the like.
- a closed kneader such as a kneader, an intermix or a Banbury mixer, or an open roll
- the kneaded material is divided into sheets, or an extruder
- Example 1 The above components are kneaded using a kneader and an open roll, and the kneaded product is press vulcanized at 180 ° C. for 6 minutes, and then oven vulcanization (secondary vulcanization) is carried out at 230 ° C. for 22 hours. A vulcanized sheet of mm was obtained.
- Metal corrosion test was conducted on this vulcanized sheet. However, in Comparative Example 3 described later, the test piece itself could not be produced.
- Metal corrosion test The vulcanized sheet is sandwiched between two metal (SUS304) plates, Fuel C 10% ethanol and 500 ppm distilled water were added to the test solution, and after contact with the vulcanized sheet after immersion for 7 hours at 120 ° C, the corrosion state of the metal plate surface was visually confirmed. Minor corrosion was evaluated as ⁇ and corrosion was evaluated as x
- Example 2 In Example 1, instead of the hydrophilicity imparting talc, the same amount (5 parts by weight) of hydrophilicity imparting clay (Engelhard product Translink 37; vinyl silane coupling agent treatment) was used.
- Example 3 In Example 1, an additional 5 parts by weight of a hydrophilized clay (Translink 37) was used.
- Example 1 Austin black and hydrophilicity imparting talc were not used.
- Comparative example 2 In Example 3, the amount of Austin black was changed to 3 parts by weight, and the amount of hydrophilicity imparting talc and the amount of hydrophilicity imparting clay were respectively changed to 0.5 parts by weight.
- Example 3 In Example 3, the amount of Austin black was changed to 50 parts by weight, the amount of hydrophilicity imparting talc was changed to 40 parts by weight, and the amount of hydrophilicity imparting clay was changed to 30 parts by weight.
- Comparative example 4 In Comparative Example 1, 40 parts by weight of magnesium oxide (Kyowa Chemical Industries, Ltd. Kyowa Mug 140) was additionally used.
- Comparative example 5 In Example 1, the amount of Austin black was changed to 20 parts by weight, and no hydrophilicity imparting talc was used.
- Example 6 Comparative example 6 In Example 1, the amount of hydrophilicity-imparted talc was changed to 20 parts by weight, and Austin Black was not used.
- Comparative example 7 In Example 1, an additional 20 parts by weight of hydrophilicity imparting clay (Translink 37) was additionally used, and Austin black and hydrophilicity imparting talc were not used.
- Example 8 In Example 1, instead of the hydrophilicity-imparted talc, the same amount (5 parts by weight) of hydrophobic general purpose talc (Nippon Talc product MS-P) was used.
- Example 9 instead of the hydrophilicity-imparting clay, the same amount (5 parts by weight) of a hydrophobic general-purpose clay (Takehara Chemicals Union Clay RC-1) was used.
- a hydrophobic general-purpose clay Takehara Chemicals Union Clay RC-1
- Comparative example 10 In Comparative Example 8, a further 5 parts by weight of a hydrophobic general purpose clay (Union clay RC-1) was used.
- a hydrophobic general purpose clay (Union clay RC-1) was used.
- Comparative Example 4 Although a certain effect was observed in magnesium oxide as an acid acceptor, slight corrosion was confirmed on the surface of the metal plate. (6) In Comparative Examples 5 to 7, Austin black, hydrophilicity imparting talc or hydrophilicity imparting clay are not combined respectively, and each is used alone, and in these cases also, slight corrosion is confirmed on the metal plate surface. It was done. (7) In Comparative Examples 8 to 10, general purpose talc, general purpose clay or both of them were used, and corrosion was confirmed on the surface of the metal plate.
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Abstract
Description
金属腐食試験:加硫シートを2枚の金属(SUS304)板で挟み込み、Fuel C
に10%のエタノールおよび500ppmの蒸留水を加えた試験
液中に、120℃で7時間浸漬した後の加硫シートに接する
金属板表面の腐食状態を目視で確認し、腐食なしを○、
軽微な腐食ありを△、腐食ありを×と評価した
実施例1において、親水性付与タルクの代りに、同量(5重量部)の親水性付与クレー(Engelhard社製品トランスリンク37;ビニルシランカップリング剤処理)が用いられた。
実施例1において、さらに5重量部の親水性付与クレー(トランスリンク37)が用いられた。
実施例1において、オースチンブラックおよび親水性付与タルクが用いられなかった。
実施例3において、オースチンブラック量が3重量部に、親水性付与タルク量および親水性付与クレー量がそれぞれ0.5重量部に変更されて用いられた。
実施例3において、オースチンブラック量が50重量部に、親水性付与タルク量が40重量部に、親水性付与クレー量が30重量部にそれぞれ変更して用いられた。
比較例1において、さらに酸化マグネシウム(協和化学工業製品キョーワマグ140)40重量部が追加して用いられた。
実施例1において、オースチンブラック量が20重量部に変更して用いられ、親水性付与タルクが用いられなかった。
実施例1において、親水性付与タルク量が20重量部に変更して用いられ、オースチンブラックが用いられなかった。
実施例1において、さらに親水性付与クレー(トランスリンク37)20重量部が追加して用いられ、オースチンブラックおよび親水性付与タルクが用いられなかった。
実施例1において、親水性付与タルクの代りに、同量(5重量部)の疎水性の汎用タルク(日本タルク製品MS-P)が用いられた。
実施例2において、親水性付与クレーの代りに、同量(5重量部)の疎水性の汎用クレー(竹原化学製品ユニオンクレーRC-1)が用いられた。
比較例8において、さらに5重量部の疎水性の汎用クレー(ユニオンクレーRC-1)が用いられた。
(1)各実施例では、金属板の腐食が確認されなかった。
(2)比較例1では、金属板表面に腐食が確認された。
(3)比較例2では、オースチンブラック、親水性付与タルクおよび親水性付与クレーの配合量がいずれも規定量以下であって、腐食防止に一定の効果はみられるものの、金属板表面に軽微な腐食が確認された。
(4)比較例3では、オースチンブラック、親水性付与タルクおよび親水性付与クレーの配合量がいずれも規定量以上のため作業性が悪く、試験片の作製ができなかった。
(5)比較例4では、受酸剤としての酸化マグネシウムに一定の効果はみられるものの、金属板表面に軽微な腐食が確認された。
(6)比較例5~7では、それぞれオースチンブラック、親水性付与タルクまたは親水性付与クレーが組合されず、それぞれ単独で用いられており、これらの場合にも金属板表面に軽微な腐食が確認された。
(7)比較例8~10では、汎用タルク、汎用クレーまたはこれら両者が用いられており、金属板表面に腐食が確認された。
Claims (11)
- フッ素含量が64重量%以上のパーオキサイド架橋可能なテトラフルオロエチレン/フッ化ビニリデン/ヘキサフルオロプロペン3元共重合ゴム100重量部、(A)比表面積が5~20m2/gのカーボンブラック5~90重量部、(B)瀝青質微粉末5~40重量部、(C)親水性付与タルク1~30重量部および親水性付与クレーの少くとも一種1~20重量部および(D)有機過酸化物0.5~6重量部を含有してなり、燃料油と接触する燃料油系シール材の成形材料として用いられるフッ素ゴム組成物。
- 金属酸化物よりなる受酸剤を配合していない請求項1記載のフッ素ゴム組成物。
- フッ素含量が67~69重量%のパーオキサイド架橋可能な3元共重合ゴムが用いられた請求項1記載のフッ素ゴム組成物。
- カーボンブラックがMTカーボンブラックまたはFTカーボンブラックである請求項1記載のフッ素ゴム組成物。
- 瀝青質微粉末がオースチンブラックである請求項1記載のフッ素ゴム組成物。
- 1100℃以上の高温で表面処理して親水性を付与したタルクが用いられた請求項1記載のフッ素ゴム組成物。
- シランカップリング剤で表面処理して親水性を付与したクレーが用いられた請求項1記載のフッ素ゴム組成物。
- (A)成分カーボンブラックと(B)成分瀝青質微粉末とが6~1/6の重量比で、かつ3元系共重合ゴム100重量部当り(A)成分と(B)成分とが合計して10~100重量部となる割合で用いられた請求項1記載のフッ素ゴム組成物。
- 3元共重合ゴム100重量部当り(B)瀝青質微粉末と(C)親水性付与タルクおよびクレーの少くとも一種とが合計して10~50重量部となる割合で用いられた請求項1記載のフッ素ゴム組成物。
- さらに1~10重量部の(E)多官能性不飽和化合物が(D)有機過酸化物と共に併用された請求項1記載のフッ素ゴム組成物。
- 請求項1、2または10記載のフッ素ゴム組成物を架橋成形して得られた、燃料油と接触する燃料油系シール材。
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EP12767251.7A EP2682426B1 (en) | 2011-04-06 | 2012-04-02 | Fluorine rubber composition |
JP2012529027A JP5418683B2 (ja) | 2011-04-06 | 2012-04-02 | フッ素ゴム組成物 |
US14/110,224 US9156985B2 (en) | 2011-04-06 | 2012-04-02 | Fluororubber composition |
CN201280016642.XA CN103443197B (zh) | 2011-04-06 | 2012-04-02 | 氟橡胶组合物 |
US14/831,440 US20150353720A1 (en) | 2011-04-06 | 2015-08-20 | Fluororubber composition |
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US14/110,224 A-371-Of-International US9156985B2 (en) | 2011-04-06 | 2012-04-02 | Fluororubber composition |
US14/831,440 Division US20150353720A1 (en) | 2011-04-06 | 2015-08-20 | Fluororubber composition |
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WO2012137724A1 true WO2012137724A1 (ja) | 2012-10-11 |
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PCT/JP2012/058902 WO2012137724A1 (ja) | 2011-04-06 | 2012-04-02 | フッ素ゴム組成物 |
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US (2) | US9156985B2 (ja) |
EP (1) | EP2682426B1 (ja) |
JP (1) | JP5418683B2 (ja) |
CN (1) | CN103443197B (ja) |
WO (1) | WO2012137724A1 (ja) |
Cited By (2)
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WO2016088685A1 (ja) * | 2014-12-02 | 2016-06-09 | ダイキン工業株式会社 | フッ素ゴム組成物及びフッ素ゴム架橋物 |
WO2019103113A1 (ja) | 2017-11-24 | 2019-05-31 | Nok株式会社 | ガスケット素材 |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2013136958A1 (ja) * | 2012-03-13 | 2013-09-19 | ダイキン工業株式会社 | 自動車用フィラーキャップ |
WO2017150192A1 (ja) * | 2016-03-01 | 2017-09-08 | Nok株式会社 | フッ素ゴム組成物及びフッ素ゴム架橋体 |
CN110709467B (zh) * | 2017-06-06 | 2021-03-23 | Nok株式会社 | 氟橡胶组合物和氟橡胶交联体 |
JP7173003B2 (ja) * | 2017-06-06 | 2022-11-16 | 日本ゼオン株式会社 | ゴム架橋物およびその製造方法 |
JP7012063B2 (ja) * | 2019-12-11 | 2022-01-27 | 三菱電線工業株式会社 | 半導体製造装置用シール材 |
CN112795118B (zh) * | 2020-12-30 | 2022-09-20 | 广州机械科学研究院有限公司 | 一种绝缘氟橡胶材料及其制备方法与应用 |
CN115679697A (zh) * | 2022-11-04 | 2023-02-03 | 无锡腾华电缆材料科技有限公司 | 耐高温石油导电带的生产工艺 |
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- 2012-04-02 CN CN201280016642.XA patent/CN103443197B/zh active Active
- 2012-04-02 US US14/110,224 patent/US9156985B2/en active Active
- 2012-04-02 JP JP2012529027A patent/JP5418683B2/ja not_active Expired - Fee Related
- 2012-04-02 EP EP12767251.7A patent/EP2682426B1/en active Active
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2015
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Also Published As
Publication number | Publication date |
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US9156985B2 (en) | 2015-10-13 |
US20140031461A1 (en) | 2014-01-30 |
EP2682426A4 (en) | 2014-11-05 |
US20150353720A1 (en) | 2015-12-10 |
CN103443197A (zh) | 2013-12-11 |
JPWO2012137724A1 (ja) | 2014-07-28 |
JP5418683B2 (ja) | 2014-02-19 |
CN103443197B (zh) | 2014-12-31 |
EP2682426A1 (en) | 2014-01-08 |
EP2682426B1 (en) | 2015-09-30 |
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