WO2019003884A1 - ゴム組成物および燃料電池セパレータ用シール材 - Google Patents
ゴム組成物および燃料電池セパレータ用シール材 Download PDFInfo
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- WO2019003884A1 WO2019003884A1 PCT/JP2018/022232 JP2018022232W WO2019003884A1 WO 2019003884 A1 WO2019003884 A1 WO 2019003884A1 JP 2018022232 W JP2018022232 W JP 2018022232W WO 2019003884 A1 WO2019003884 A1 WO 2019003884A1
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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
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/028—Sealing means characterised by their material
- H01M8/0284—Organic resins; Organic polymers
-
- 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
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/32—Compounds containing nitrogen bound to oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/083—Copolymers of ethene with aliphatic polyenes, i.e. containing more than one unsaturated bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
-
- 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
- C08K2201/019—Specific properties of additives the composition being defined by the absence of a certain additive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a rubber composition and a sealing material for a fuel cell separator. More particularly, the present invention relates to a rubber composition satisfying low temperature sealability and a seal material for a fuel cell separator.
- Fuel cells have almost no need to use fossil fuels that need to be aware of resource exhaustion, generate almost no noise during power generation, and can make energy recovery rates higher than other energy generation mechanisms. Practical application has started because of its excellent properties.
- the polymer electrolyte fuel cell operates at a low temperature as compared to other types of fuel cells, so there is no risk of corrosion of the material constituting the cell components, and the low temperature operation In particular, they have the characteristic of being able to discharge a relatively large current, and are attracting attention as an alternative power source not only for household cogeneration but also for automotive internal combustion engines.
- the separator is generally formed by forming a plurality of parallel grooves on both sides or one side of a flat plate, and transmits the electricity generated by the gas diffusion electrode in the fuel cell to the outside At the same time, it plays a role of draining the water generated in the process of power generation into the groove and securing the groove as a flow passage of the reaction gas flowing into the fuel cell.
- the separator sealing material As a fuel cell separator having a groove that plays such a role, further downsizing is required, and since a large number of separators are used in combination, the separator sealing material has excellent durability and can be used for a long time. It is required.
- the electrolyte membrane of PEFC is formed of a polymer membrane such as a polytetrafluoroethylene membrane having a perfluorosulfone side chain group.
- a polymer membrane such as a polytetrafluoroethylene membrane having a perfluorosulfone side chain group.
- Patent Document 1 discloses (A) EPDM, (B) an organic compound having a one-hour half-life temperature of 130 ° C. or less as an adhesive seal material for fuel cells, which can be crosslinked at low temperature and has high sealing performance and adhesion reliability.
- a composition comprising a cross-linked product of a rubber composition containing an adhesive component which is a peroxide crosslinking agent, (C) crosslinking aid and (D) resorcinol compound-melamine compound or a silane coupling agent is described. It is described in Comparative Example 4 that inferior results are shown in the 90 ° peeling test and the T-shaped peeling test (initially, after 100 hours of warm water immersion at 90 ° C. and after 1000 hours) when the adhesive component (D) is not contained. It is done.
- Patent Document 2 describes that an ethylene / ⁇ -olefin copolymer is further blended in the rubber composition described in Patent Document 1 in an amount of 5 to 30 parts by weight per 100 parts by weight of EPDM.
- the ⁇ -olefin includes propylene, butene-1, pentene-1, hexene-1, 4-methylpentene-1, heptene-1, octene-1, nonene-1 and decene-1 and has 3 to 10 carbon atoms Alpha-olefins are mentioned.
- an aluminate coupling agent is also described as said (D) component.
- FC stack and system parts do not become inoperable due to freezing in any case, such as starting and traveling under low temperature conditions and leaving under freezing conditions after traveling.
- seal material is also required to have cold resistance
- EPDM can not be said to have sufficient cold resistance.
- An object of the present invention is to provide a rubber composition capable of providing a fuel cell separator sealing material having improved low-temperature sealability in addition to having a function required as a separator sealing material.
- the object of the present invention is to contain 1 to 10 parts by weight of an organic peroxide crosslinking agent having a one-hour half-life temperature of 110 to 130 ° C. per 100 parts by weight of an ethylene-butene-nonconjugated diene copolymer. It is achieved by a rubber composition.
- the ethylene-butene-nonconjugated diene copolymer (EBT copolymer) can be used as a blend with not more than 50% by weight, preferably not more than 30% by weight, of EPDM in the total amount of it and EPDM.
- the crosslinked molded product of this rubber composition forms a sealing material for a fuel cell separator.
- the seal material for a fuel cell separator which is a crosslinked molded product of the rubber composition according to the present invention, has low cold resistance evaluated by the TR10 value and the TR70 value in the low temperature elastic recovery test of JIS K-6261 corresponding to ISO 2921.
- a separator sealing material superior to EPDM is provided.
- this separator sealing material exhibits excellent cold resistance even without using various plasticizers, various problems caused by using the plasticizer can be solved.
- it does not contain a resorcinol compound-melamine compound, an aluminate coupling agent or a silane coupling agent.
- Patent Document 3 describes an ethylene-butene-nonconjugated diene copolymer (EBT copolymer) used in the present invention.
- EBT copolymer ethylene-butene-nonconjugated diene copolymer
- butene butene-1 is mainly used.
- non-conjugated diene 5-ethylidene-2-norbornene, dicyclopentadiene, 5-vinyl-2-norbornene, 1,4-hexadiene, etc. which are cyclic or chain non-conjugated dienes are used, preferably cyclic Nonconjugated dienes are used.
- This EBT copolymer contains 50 to 95 mol%, preferably 70 to 95 mol%, of structural units derived from ethylene, 4.9 to 49.9 mol%, preferably 4.9 to 29.9 mol% of structural units derived from butene, (Tert-butylamido) dimethyl ( ⁇ 5 -2-methyl-s-indacen-1-yl) having a copolymer composition of 0.1 to 5 mol%, preferably 0.1 to 3 mol%, of a structural unit derived from a conjugated diene 2.)
- the synthesis is carried out using a metallocene compound such as silane titanium (II) 1,3-pentadine as a polymerization catalyst.
- the EBT copolymer may be used alone, but it can be used by replacing 50 parts by weight or less, preferably 30% by weight or less, with 100 parts by weight of EPBT.
- EPDM is replaced at a higher ratio than that, as shown in the results of Comparative Examples 1 and 2 below, TR70, which is a measure of cold resistance, is deteriorated.
- Patent Document 3 It is described in Patent Document 3 that the vulcanization of this EBT copolymer is carried out using a sulfur compound, an organic peroxide, a phenol resin, an oxy compound or the like.
- organic peroxides examples include dicumyl peroxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, 2,5-dimethyl-2,5-di (tert-butylperoxy) Hexin-3, 2,5-dimethyl-2,5-di (benzoylperoxy) hexane, di-tert-butylperoxide, di-tert-butylperoxy-3,3,5-trimethylcyclohexane, tert-butylhydroper Oxide or the like is used, and in the example of Patent Document 3, sulfur and dicumyl peroxide are used as a vulcanizing agent.
- an organic peroxide having a one-hour half-life temperature of 110 to 130 ° C. is used for crosslinking of the EBT copolymer.
- the one-hour half-life temperature is higher than this, for example, dicumyl peroxide, as shown in the result of Comparative Example 3 below, the value of the degree of vulcanization T90 becomes large.
- an organic peroxide lower than 110 ° C. is used, decomposition of the organic peroxide is likely to occur due to heat generation during kneading, which in turn causes scorch.
- the one-hour half-life temperature is a temperature at which the half-life becomes one hour at the half-life temperature which is an index indicating the decomposition temperature of the organic peroxide.
- peroxy ketal having a one-hour half-life temperature of 110 to 130 ° C.
- peroxy ester preferably peroxy ketal is preferably used.
- peroxyketal examples include n-butyl-4,4-di (tert-butylperoxy) valerate, 2,2-di (tert-butylperoxy) butane, 2,2-di [4,4- ( Tert-Butylperoxy) cyclohexyl] propane, 1,1-di (tert-butylperoxy) cyclohexane, di (3,5,5-trimethylhexanoyl) peroxide, 1,1-di (tert-hexylperoxy) ) Cyclohexane, 1,1-di (tertiary hexylperoxy) -3,3,5-trimethylcyclohexane, 1,1-di (tert-butylperoxy) -2-methylcyclohexane and the like are used.
- peroxy ester for example, tert-butyl peroxybenzoate, tert-butyl peroxyacetate, tert-hexyl peroxybenzoate, tert-butyl peroxy-2-ethylhexyl monocarbonate, tert-butyl peroxy laurate, Tertiary butylperoxyisopropyl monocarbonate, tertiary butylperoxy-3,5,5-trimethylhexanoate, tertiary butylperoxymaleic acid, tertiary hexylperoxyisopropyl monocarbonate and the like are used.
- organic peroxides are used in a proportion of about 1 to 10 parts by weight, preferably about 2 to 5 parts by weight, per 100 parts by weight of the EBT copolymer or EBT copolymer-EPDM blend.
- carbon black such as MT carbon black or a silica reinforcing agent
- crosslinking aid such as maleimide compound, triallyl (iso) cyanurate, trimethylolpropane trimethacrylate, etc.
- hardness modifiers such as silica, clay and talc
- processing aids such as process oil, and antioxidants may be blended and used.
- a rubber composition prepared by blending an organic peroxide with an EBT copolymer or an EBT copolymer-EPDM blend using an open roll or the like is disposed between components to be adhesively sealed and crosslinked.
- Crosslinking is preferably carried out at about 120 to 200 ° C. for about 0.5 to 30 minutes, and optionally oven curing (secondary curing) at about 150 to 250 ° C. for about 0.5 to 24 hours.
- Patent Document 3 describes that an EBT copolymer is used as various sealing materials and the like, but the organic peroxide crosslinking agent to be used is not specified at all, and a fuel for which cold resistance is required is required. There is no description at all for the battery separator sealing material.
- Example 1 EBT copolymer (Mitsui Chemicals EBT K-9330) 100 parts by weight Peroxyketal (Nippon Yushi Co., Ltd. Perhexa C; 4% 70% purity, 1,1-di (tert-butylperoxy) Cyclohexane, 1 hour half-life temperature 111 ° C) MT carbon black (Cancurve product THERMAX N990) 60 60
- the above components were kneaded using an open roll, Banbury mixer, kneader or the like, and the kneaded product was vulcanized at 180 ° C. for 10 minutes, and then oven vulcanized (secondary vulcanization) at 150 ° C. for 24 hours.
- Kneadability A good roll winding property at the time of kneading is ⁇ , adhesion is observed somewhat, and a thing that does not disturb the kneading is evaluated as O.
- Degree of vulcanization T90 each rubber kneaded material at 180 ° C.
- T90 time (T90) to achieve a torque equivalent to the maximum torque 90% from the vulcanization curve of T, and T90 evaluates 60 seconds or less as ⁇ , over 60 seconds as ⁇ Elongation at cutting: ISO 37 Corresponding to JIS K-6251 corresponding to 300% or more ⁇ , less than 300% evaluated as ⁇ Low-temperature elastic recovery test: JIS K-6261 (TR 10 value) ⁇ : -55 or less, ⁇ : -50 or less, ⁇ : less than -50 (TR 70 value) ⁇ : -40 or less, ⁇ : -35 or less, ⁇ : less than -35
- Example 2 In Example 1, in place of the peroxyketal used therein, the same amount (4 parts by weight) of another peroxyketal (NIPO Yushi Products Perbutyl 355; purity 97% or more, di (3,5,5-trimethyl) Hexanoyl) peroxide, 1 hour half life temperature 119 ° C.) was used.
- another peroxyketal NIPO Yushi Products Perbutyl 355; purity 97% or more, di (3,5,5-trimethyl) Hexanoyl
- Example 3 In Example 2, the amount of EBT copolymer was changed to 90 parts by weight, and 10 parts by weight of EPDM (JSR product JSR EP27) was used.
- JSR product JSR EP27 JSR product JSR EP27
- Example 4 In Example 2, the amount of EBT copolymer was changed to 70 parts by weight, and 30 parts by weight of EPDM (JSR EP27) was used.
- JSR EP27 JSR EP27
- Example 5 In Example 2, the amount of EBT copolymer was changed to 50 parts by weight, and 50 parts by weight of EPDM (JSR EP27) was used.
- JSR EP27 JSR EP27
- Example 2 Comparative Example 1 In Example 2, the amount of EBT copolymer was changed to 30 parts by weight, and 70 parts by weight of EPDM (JSR EP27) was used.
- JSR EP27 JSR EP27
- Comparative example 2 In Example 2, the amount of EBT copolymer was changed to 10 parts by weight, and 90 parts by weight of EPDM (JSR EP27) was used.
- JSR EP27 JSR EP27
- Example 3 In Example 1, instead of peroxyketal, 2 parts by weight of dialkyl peroxide (NOF Corporation Perkmill D; purity 98% or more, dicumyl peroxide, 1 hour half life temperature 136 ° C.) was used.
- dialkyl peroxide NOF Corporation Perkmill D; purity 98% or more, dicumyl peroxide, 1 hour half life temperature 136 ° C.
- Comparative example 5 In Comparative Example 4, the amount of peroxyketal was changed to 5 parts by weight, and further 20 parts by weight of adipic acid ester (Showa Kosan product DIDA) was used.
- Comparative example 6 In Comparative Example 5, an additional 1 part by weight of a maleimide compound crosslinking aid (Ouchi emerging chemical product Barnock PM) was additionally used.
- a maleimide compound crosslinking aid (Ouchi emerging chemical product Barnock PM) was additionally used.
- EPDM 100 parts by weight Peroxyester (Perbutyl 355) 2 ⁇ Crosslinking auxiliary (Barnock PM) 1 ⁇ MAF carbon black (show black IP200) 30 pieces Process oil (PW-380) 40 ⁇ Kneading, vulcanization, and evaluation or measurement of various properties were performed in the same manner as in Example 1 using the above-described components.
- Comparative Examples 4 to 8 are shown in Table 2 below. Incidentally, when a plasticizer having good low temperature properties is added to EPDM, and a crosslinking aid is added to improve the TR70 value, and the crosslinking density is increased, the elongation becomes NG as seen in the result of Comparative Example 6.
Abstract
Description
EBT共重合体(三井化学製品EBT K-9330) 100重量部
パーオキシケタール(日本油脂製品パーヘキサC; 4 〃
純度70%、1,1-ジ(第3ブチルパーオキシ)
シクロヘキサン、1時間半減期温度111℃)
MTカーボンブラック(キャンカーブ社製品 THERMAX N990) 60 〃
以上の各成分をオープンロール、バンバリーミキサー、ニーダ等で混練し、混練物を180℃で10分間加硫した後、150℃で24時間オーブン加硫(二次加硫)した。
混練性:混練時のロール巻付き性が良好なものを◎、多少粘着はみられ
るが、混練に支障がないものを○と評価
加硫度T90:180℃温度条件下における各ゴム混練物の加硫曲線から、最
大トルク90%に相当するトルクを達成する迄の時間(T90)を
求め、T90が60秒以下を○、60秒を超えるものを×と評価
切断時伸び:ISO 37に対応するJIS K-6251準拠
300%以上を○、300%より小さいものを×と評価
低温弾性回復試験:JIS K-6261準拠
(TR 10値) ◎:-55以下、○:-50以下、×:-50より小さい
(TR 70値) ◎:-40以下、○:-35以下、×:-35より小さい
実施例1において、そこで用いられたパーオキシケタールの代りに、同量(4重量部)の他のパーオキシケタール(日本油脂製品パーブチル355;純度97%以上、ジ(3,5,5-トリメチルヘキサノイル)パーオキサイド、1時間半減期温度119℃)が用いられた。
実施例2において、EBT共重合体量が90重量部に変更され、EPDM(JSR製品JSR EP27)が10重量部用いられた。
実施例2において、EBT共重合体量が70重量部に変更され、EPDM(JSR EP27)が30重量部用いられた。
実施例2において、EBT共重合体量が50重量部に変更され、EPDM(JSR EP27)が50重量部用いられた。
実施例2において、EBT共重合体量が30重量部に変更され、EPDM(JSR EP27)が70重量部用いられた。
実施例2において、EBT共重合体量が10重量部に変更され、EPDM(JSR EP27)が90重量部用いられた。
実施例1において、パーオキシケタールの代りに、2重量部のジアルキルパーオキサイド(日本油脂製品パークミルD;純度98%以上、ジクミルパーオキサイド、1時間半減期温度136℃)が用いられた。
実施例2において、EBT共重合体の代りに、同量(100重量部)のEPDM(JSR EP27)が用いられた。
比較例4において、パーオキケタール量が5重量部に変更され、さらにアジピン酸エステル(昭和興産製品DIDA)20重量部が用いられた。
比較例5において、さらに1重量部のマレイミド化合物架橋助剤(大内新興化学製品バルノックPM)が追加して用いられた。
EPDM(EP27) 100重量部
パーオキシケタール(パーヘキサC) 2 〃
架橋助剤(バルノックPM) 1 〃
MAFカーボンブラック(キャポットジャパン製品 40 〃
ショウブラックIP200)
プロセスオイル(PW-380) 40 〃
以上の各成分を用いて、実施例1と同様に混練、加硫および諸特性の評価または測定が行われた。
EPDM(EP51) 100重量部
パーオキエステル(パーブチル355) 2 〃
架橋助剤(バルノックPM) 1 〃
MAFカーボンブラック(ショウブラックIP200) 30 〃
プロセスオイル(PW-380) 40 〃
以上の各成分を用いて、実施例1と同様に混練、加硫および諸特性の評価または測定が行われた。
表2
評価・測定項目 比-4 比-5 比-6 比-7 比-8
混練性 ◎ ◎ ◎ ◎ ◎
T90 (秒) 50 50 50 50 48
評価 ○ ○ ○ ○ ○
伸び (%) 330 450 230 410 450
評価 ○ ○ × ○ ○
TR10値 (℃) -48 -55 -56 -47 -28
評価 × ◎ ◎ × ×
TR70値 (℃) -26 -29 -31 -30 +5
評価 × × × × ×
Claims (7)
- エチレン-ブテン-非共役ジエン共重合体100重量部に対し、1時間半減期温度が110~130℃の有機過酸化物架橋剤1~10重量部を含有してなるゴム組成物。
- エチレン-ブテン-非共役ジエン共重合体が、それとEPDMとの合計量中50重量%以下のEPDMをブレンドして用いられた請求項1記載のゴム組成物。
- 1時間半減期温度が110~130℃の有機過酸化物がパーオキシケタール系またはパーオキシエステル系有機過酸化物である請求項1または2記載のゴム組成物。
- 可塑剤を含有しない請求項1または2記載のゴム組成物。
- レゾルシノール系化合物-メラミン系化合物、アルミネート系カップリング剤またはシランカップリング剤を含有しない請求項1または2記載のゴム組成物。
- 燃料電池セパレータ用シール材の架橋成形に用いられる請求項1または2記載のゴム組成物。
- 請求項6記載のゴム組成物の架橋成形物よりなる燃料電池セパレータ用シール材。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201880042564.8A CN110799585A (zh) | 2017-06-28 | 2018-06-11 | 橡胶组合物及燃料电池隔板用密封材料 |
KR1020207001652A KR20200023635A (ko) | 2017-06-28 | 2018-06-11 | 고무 조성물 및 연료전지 세퍼레이터용 시일재 |
JP2019502817A JP6645617B2 (ja) | 2017-06-28 | 2018-06-11 | 燃料電池セパレータ用シール材 |
US16/620,254 US20200112036A1 (en) | 2017-06-28 | 2018-06-11 | Rubber composition and a sealing material for fuel cell separators |
EP18823022.1A EP3647354B1 (en) | 2017-06-28 | 2018-06-11 | Rubber composition and sealant for fuel cell separator |
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US (1) | US20200112036A1 (ja) |
EP (1) | EP3647354B1 (ja) |
JP (1) | JP6645617B2 (ja) |
KR (1) | KR20200023635A (ja) |
CN (1) | CN110799585A (ja) |
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2018
- 2018-06-11 CN CN201880042564.8A patent/CN110799585A/zh active Pending
- 2018-06-11 JP JP2019502817A patent/JP6645617B2/ja active Active
- 2018-06-11 WO PCT/JP2018/022232 patent/WO2019003884A1/ja unknown
- 2018-06-11 EP EP18823022.1A patent/EP3647354B1/en active Active
- 2018-06-11 US US16/620,254 patent/US20200112036A1/en not_active Abandoned
- 2018-06-11 KR KR1020207001652A patent/KR20200023635A/ko not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
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EP3647354A1 (en) | 2020-05-06 |
CN110799585A (zh) | 2020-02-14 |
JP6645617B2 (ja) | 2020-02-14 |
EP3647354B1 (en) | 2022-04-27 |
US20200112036A1 (en) | 2020-04-09 |
KR20200023635A (ko) | 2020-03-05 |
JPWO2019003884A1 (ja) | 2019-06-27 |
EP3647354A4 (en) | 2021-03-10 |
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