WO2011030777A1 - フッ素ゴム組成物 - Google Patents
フッ素ゴム組成物 Download PDFInfo
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- WO2011030777A1 WO2011030777A1 PCT/JP2010/065386 JP2010065386W WO2011030777A1 WO 2011030777 A1 WO2011030777 A1 WO 2011030777A1 JP 2010065386 W JP2010065386 W JP 2010065386W WO 2011030777 A1 WO2011030777 A1 WO 2011030777A1
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- peroxide
- fluororubber
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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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
Definitions
- the present invention relates to a fluororubber composition. More specifically, the present invention relates to a fluororubber composition suitably used as a vulcanization molding material for a sealing material used for contact with biodiesel fuel.
- Biodiesel fuel which is an alternative to petroleum, is obtained by esterifying raw oil and fat with methanol to produce fatty acid methyl ester (FAME), which is mixed with conventional light oil.
- FAME fatty acid methyl ester
- the mixing ratio is generally about 3 to 90% by volume in the total amount of the oil and light oil.
- Various animal and vegetable fats and oils are used as raw material fats and oils, but the current mainstream is mainly plant-derived fats and oils such as rapeseed oil, soybean oil, palm oil, coconut oil, and sunflower oil.
- FAMEs used for such BDF applications have been proposed so far, but the types and amounts used vary widely depending on the region where BDF is used.
- fluororubber is preferably used as the rubber material that can be used.
- hydrogenated NBR as a rubber composition having fuel oil resistance (sour fuel oil resistance), biofuel resistance (rapeseed oil resistance), ozone resistance, and used for the inner tube rubber of a fuel rubber hose.
- -A sulfur vulcanized rubber composition in which 2 to 5 parts by weight of magnesium oxide is blended with 100 parts by weight of a polyvinyl chloride blend material has been proposed (see Patent Document 1). And in the reference example, 3 parts by weight of MgO, 6 parts by weight of Ca (OH) 2 and 3 parts by weight of CaO were blended with non-sulfur vulcanizable fluoro rubber (Daikin product; considered to be polyol vulcanizable).
- a fluororubber composition has been described, which is said to satisfy material and product performance, but at a high cost.
- Rubbers used for engine oil contact applications by incorporating amphoteric oxides (generally, compounds that act as bases for acids and acids as bases) into polyol vulcanizable or peroxide-crosslinkable fluororubbers. It has also been proposed to form a molded article (see Patent Document 2).
- amphoteric oxide ZnO, Al 2 O 3 , PbO, preferably ZnO are used, and together with these amphoteric oxides, a divalent metal is used. It is said that an acid acceptor which is an oxide or a hydroxide can be used in combination.
- Examples 1 to 3 ZnO 6.5 parts by weight or 12 parts by weight with respect to 100 parts by weight of the fluorine-containing copolymer, Ca (OH) 2 5 parts by weight MgO 3 polyol parts are combined vulcanizable fluororubber composition is described.
- the peroxide crosslinkable fluororubber an example in which only ZnO which is an amphoteric oxide is blended is described.
- a ZnO acid acceptor is used in a peroxide crosslinkable fluororubber composition for the purpose of improving fuel oil resistance (see Patent Document 3), or a low friction coefficient.
- acid acceptors such as Ca (OH) 2 , MgO, ZnO are used (see Patent Document 4).
- An object of the present invention is to provide a peroxide-crosslinkable fluororubber composition that can be effectively used as a vulcanized molding material for a seal material, effectively preventing material deterioration when used for an application in contact with BDF. It is in.
- the object of the present invention is to provide (A) 100 parts by weight of a peroxide-crosslinkable fluororubber, (B) 1-15 parts by weight of ZnO, and (C) a basic metal water in a weight ratio of 0.5 or more with respect to the weight of ZnO.
- a fluororubber composition containing at least one of oxides and metal oxides other than ZnO and (D) 0.5 to 10 parts by weight of an organic peroxide.
- the peroxide cross-linkable fluorororubber containing ZnO has excellent compression set resistance, but when applied to BDF, there is a nonconformity phenomenon that the volume expansion coefficient increases with time. This is because BDF is oxidized and deteriorated by the influence of oxygen, heat, moisture, etc., or fatty acid methyl ester is hydrolyzed to produce fatty acid and methanol, and this fatty acid and ZnO react with each other in fluorine rubber. This is due to the formation of fatty acid Zn compounds. As described above, it is considered that the swelling increases with time when fatty acids or fatty acid Zn compounds are formed in the fluororubber and BDF is drawn into the fluororubber.
- the fluororubber composition of the present invention having such characteristics is suitably used as a seal product material such as an O-ring, gasket, packing, valve, oil seal, etc. that comes into contact with BDF.
- a seal product material such as an O-ring, gasket, packing, valve, oil seal, etc. that comes into contact with BDF.
- Application to industrial rubber products is also possible.
- the fluorine content is 63 to 71 wt%
- the Mooney viscosity ML 1 + 10 (121 ° C.) is 20 to 100
- Any fluorine-containing elastomer containing iodine and / or bromine in the molecule as a crosslinking site can be used, but the following copolymer elastomer is preferably used.
- copolymer elastomers having a copolymer composition of about 50 to 80 mol% vinylidene fluoride, about 15 to 50 mol% hexafluoropropene and about 30 to 0 mol% tetrafluoroethylene
- Viton GAL200S, GBL200S, GBL600S, GF200S, GF600S, Solvay Soleckis products Technoflon P457, P757, P459, P952, Daikin products Daiel G952, G901, G902, G912, G801 Etc. are used as they are.
- CF 2 CFORf (Rf: perfluoroalkyl group having 1 to 10 carbon atoms, preferably perfluoromethyl group or having one or more ether bonds in the carbon chain
- Rf perfluoroalkyl group having 1 to 10 carbon atoms, preferably perfluoromethyl group or having one or more ether bonds in the carbon chain
- An iodine group and / or a bromine group were introduced into a copolymer elastomer having a copolymer composition of about 5 to 50 mol% perfluorovinyl ether represented by (perfluorooxyalkyl group) and about 50 to 0 mol% of tetrafluoroethylene.
- DuPont products Viton GLT200S, GLT600S, GBLT200S, GBLT600S, GFLT200S, GFLT600S, Solvay Solexis products Technoflon PL455, PL855, PL557, PL458, PL958, Daikin products Daiel LT302, LT301, etc. are used as they are.
- iodine group and / or bromine group that enables peroxide crosslinking of fluororubber can be carried out by a copolymerization reaction in the presence of iodine group and / or bromine group-containing saturated or unsaturated compound.
- a bromine group and / or iodine group is contained as a side chain of the fluorinated copolymer, for example, perfluoro (2-bromoethyl vinyl ether), 3,3,4,4, -tetrafluoro-4-bromo-1-butene
- copolymers of crosslinking point forming monomers such as 2-bromo-1,1-difluoroethylene, bromotrifluoroethylene, perfluoro (2-iodoethyl vinyl ether), and iodotrifluoroethylene.
- n 1 to 6 1-bromoperfluoroethane, 1-bromoperfluoroethane, 1-bromoperfluoroethane, Bromoperfluorobutane, 1-bromoperfluoropentane, 1-bromoperfluorohexane, 1-iodoperfluoroethane, 1-iodoperfluoroepropane, 1-iodoperfluorobutane, 1-iodoperfluoropentane, 1- A copolymer containing an iodine group and / or a bromine group derived from io
- a crosslinking point can be introduced at the end of the fluorine-containing copolymer.
- examples of such compounds include 1-bromo-2-iodotetrafluoroethane, 1-bromo-3-iodoperfluoropropane, 1-bromo-4-iodoperfluorobutane, 2-bromo-3-iodoperfluorobutane, Monobromomonoiodoperfluoropentane, monobromomonoiodoperfluoro-n-hexane, 1,2-dibromoperfluoroethane, 1,3-dibromoperfluoropropane, 1,4-dibromoperfluorobutane, 1,5- Dibromoperfluoropentane, 1,6-dibromoperfluorohexane, 1,2-diiodoperfluoroethane
- ZnO As the component (B) ZnO, JIS IV type 1 (purity 99.8%, particle size 0.3 to 0.7 ⁇ m), type 2 (purity 99.8%, particle size 0.3 to 0.7 ⁇ m) or type 3 (purity 99.5%, Zinc white having a particle size of 0.3 to 0.8 ⁇ m) or active zinc white having a smaller particle size (purity 90%, particle size of 0.1 ⁇ m or less) is used.
- ZnO is used in a ratio of 1 to 15 parts by weight, preferably 3 to 10 parts by weight, per 100 parts by weight of the fluororubber. If the amount of ZnO is less than this, the value of compression set is deteriorated. On the other hand, if it is used in a proportion higher than this, material deterioration such as rubber swelling is observed.
- the component (C) at least one of a basic metal hydroxide and a metal oxide other than ZnO in a weight ratio of 0.5 or more, preferably 0.5 to 2 with respect to the weight of ZnO, It is used together with ZnO which is component B). If this weight ratio is smaller than this, material deterioration (swelling of rubber) due to ZnO blending can not be suppressed, while if this weight ratio is increased, the problem of material deterioration will disappear, but relatively ZnO , And the compression set resistance property is inferior.
- the basic metal hydroxide of component (C) is a monovalent to trivalent metal hydroxide mainly composed of alkali metals and alkaline earth metals, such as Ca (OH) 2 , Ba (OH) 2 , Mg (OH) 2 , Cu (OH) 2 , Fe (OH) 3 , KOH, NaOH and the like can be mentioned, and Ca (OH) 2 or Ba (OH) 2 is preferably used.
- metal oxides other than ZnO include metal oxides for rubber having acid acceptability, such as monovalent to divalent metal oxides such as MgO, CaO, BaO, CuO, Na 2 O, and K 2 O.
- MgO is used. Similar effects to these carbonates or bicarbonates such as CaCO 3 , Na 2 CO 3 , and NaHCO 3 are expected as well as these hydroxides or oxides.
- organic peroxide of component (D) examples include dicumyl peroxide, cumene hydroperoxide, p-methane hydroperoxide, 2,5-dimethylhexane-2,5-dihydroperoxide, and di-tert-butyl peroxide.
- Oxide benzoyl peroxide, m-toluyl peroxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, 2,5-dimethyl-2,5-di (tert-butylperoxy) Hexin-3, 1,3-di (tert-butylperoxyisopropyl) benzene, 2,5-dimethyl-2,5-dibenzoylperoxyhexane, (1,1,3,3-tetramethylbutylperoxy) 2-ethylhexanoate, tert-butylperoxybenzoate, tert-butylperoxylaurate, di (tert-butylperoxy) adipate, di (2-ethoxyethylperoxy) dicarbonate, bis- (4-tertiary Butyl cyclohexyl peroxy ) Dicarbonate or the like is used in a ratio of 0.5 to 10 parts by weight,
- polyfunctional unsaturated compounds include tri (meth) allyl isocyanurate, tri (meth) allyl cyanurate, triallyl trimellitate, N, N′-m-phenylene bismaleimide, diallyl phthalate, tris (diallylamine) -s-triazine, triallyl phosphite, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, 1,3-polybutadiene, etc.
- the polyfunctional unsaturated compound that improves mechanical strength, compression set, etc. is used in a ratio of about 0.1 to 20 parts by weight, preferably about 0.5 to 10 parts by weight, per 100 parts by weight of the fluororubber.
- (meth) allyl refers to allyl or methallyl.
- (meth) acrylate refers to acrylate or methacrylate.
- the composition is prepared by a compounding agent generally used as a compounding agent for rubber, for example, a reinforcing agent or filler such as carbon black, silica, barium sulfate, talc, clay, carnauba
- a reinforcing agent or filler such as carbon black, silica, barium sulfate, talc, clay, carnauba
- processing aids such as wax and sodium stearate
- vulcanizing press from rubber dough kneaded using a closed kneading device such as intermix, kneader, Banbury mixer or open roll, and made into a sheet Is used to vulcanize and mold into a predetermined shape.
- Vulcanization is generally performed by press vulcanization performed at about 100 to 250 ° C. for about 1 to 120 minutes and oven vulcanization (secondary vulcanization) performed at about 150 to 250 ° C. for about 0 to 30 hours.
- Example 1 Fluoro rubber (Dupont Viton GLT600S; 100 parts by weight F content 64%, ML 1 + 10 (121 ° C) 65) ZnO (Husstick product JIS Class 1 zinc white) 6 ⁇ Ca (OH) 2 (NICC5000 Inoue lime product) 6 ⁇ 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane 4 ⁇ (Japanese oil product Perhexa 25B, 25% concentration) N990 Carbon Black (Engineered Carbon) 25 ⁇ Processing aid (DuPont VPA No.3) 1 ⁇ Triallyl isocyanurate (Nippon Kasei Co., Ltd.) Each of the above ingredients is kneaded using a 3 L kneader, and the rubber dough made into a sheet form is vulcanized at 170 ° C. for 10 minutes using a vulcanizing press and vulcanized at 220 ° C. for 22 hours (two By vulcanization, a vulcanized rubber
- the obtained vulcanized rubber sheet test piece was tested for the following items. Normal value, low temperature characteristics: ISO 37, JIS K6251 corresponding to ASTM D412; ISO 48 JIS K6253 corresponding to ASTM D1415: 1997 (hardness Duro A: 1s indicates the measured value after 1 second); JIS K6261 compliant with ISO 2921 and ASTM D1329 Compression permanent set: JIS K6262 compliant with ISO 815 and ASTM D395 Immersion test: JIS K6258 compliant with ISO 1817 and ASTM D471 Rapeseed oil-based BDF30 or 50, soybean oil-based BDF30 Alternatively, immerse in palm oil-based BDF30 and measure the volume change rate after 150 ° C, 168 hours or 500 hours (where BDF30 and BDF50 have a fatty acid methyl ester / light oil volume ratio of 30/70 respectively And 50 / 50)
- Example 2 In Example 1, the amount of calcium hydroxide was changed to 4 parts by weight.
- Example 3 In Example 1, the amount of calcium hydroxide was changed to 8 parts by weight.
- Example 3 Comparative Example 3 In Example 1, ZnO and Ca (OH) 2 were not used, and 5 parts by weight of MgO (Kyowa Chemical Product MgO # 150) was used.
- Example 4 Fluoro rubber (DuPont Viton GFLT600S; 100 parts by weight F content 67%, ML 1 + 10 (121 ° C) 65) ZnO (JIS Class 1 Zinc Hana) 4 ⁇ Ca (OH) 2 (NICC5000) 2 ⁇ MgO (MgO # 150) 2 ⁇ 1,3-di (tert-butylperoxyisopropyl) benzene 1.2 (Nippon Oil & Fats Perbutyl P) BaSO 4 ( ⁇ chemical products) 40 ⁇ Talc (Asada flour) 10 ⁇ Cr 2 O 3 (Nippon Kagaku Kogyo; Green pigment) 5 ⁇ Processing aid (VPA No.3) 2 ⁇ Triallyl isocyanurate (Tyke) 2.5 ⁇ Kneading, vulcanization and various tests were performed in the same manner as in Example 1 using each of the above blended components.
- DuPont Viton GFLT600S 100 parts by weight F content 67%, ML 1 + 10 (121
- Example 4 Comparative Example 5 In Example 4, the amount of Ca (OH) 2 was changed to 1 part by weight, and the amount of MgO was changed to 0.8 part by weight.
- Example 4 and Comparative Example 5 are shown in Table 2 below.
- Table 2 Example 4 Comparative Example 5 ⁇ Measurement result ⁇ Normal value Hardness Duro A: 1s (point) 78 77
- Tensile strength (MPa) 14.7 15.0 Elongation at break (%) 250 240
- Example 5 Fluoro rubber (DuPont product Viton GBL600S; 100 parts by weight F content 68%, ML 1 + 10 (121 ° C) 65) ZnO (JIS Class 1 Zinc Hana) 5 ⁇ Ba (OH) 2 (Nippon Chemical Industry Products) 5 ⁇ 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane 4 ⁇ (Perhexa 25B) N990 carbon black 25 ⁇ Processing aid (VPA No.3) 1.5 ⁇ Triallyl isocyanurate (Tyke) 2 ⁇ Kneading, vulcanization and various tests were performed in the same manner as in Example 1 using each of the above blended components.
- DuPont product Viton GBL600S 100 parts by weight F content 68%, ML 1 + 10 (121 ° C) 65) ZnO (JIS Class 1 Zinc Hana) 5 ⁇ Ba (OH) 2 (Nippon Chemical Industry Products) 5 ⁇ 2,5-dimethyl-2,5-di (tert
- Example 5 and Comparative Example 6 are shown in Table 3 below.
- Table 3 Example 5 Comparative Example 6 ⁇ Measurement result ⁇ Normal value Hardness Duro A: 1s (point) 80 80
- Example 6 Fluoro rubber (Daikin product Daiel LT302; 100 parts by weight F content 64, ML 1 + 10 (121 ° C) 45) ZnO (JIS Class 1 Zinc Hana) 8 ⁇ MgO (MgO # 150) 5 ⁇ 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane 5 ⁇ ⁇ ⁇ ⁇ (Perhexa 25B) N990 carbon black 5 ⁇ Processing aid (VPA No.3) 1.5 ⁇ Triallyl isocyanurate (Tyke) 1.5 ⁇ Kneading, vulcanization and various tests were performed in the same manner as in Example 1 using each of the above blended components.
- VPA No.3 Processing aid
- Triallyl isocyanurate (Tyke) 1.5 ⁇ Kneading, vulcanization and various tests were performed in the same manner as in Example 1 using each of the above blended components.
- Comparative Example 8 Fluoro rubber (DuPont Viton E60C; 100 parts by weight F content 67%, ML 1 + 10 (121 ° C) 60, (Polyol vulcanization system, vulcanizing agent-containing polymer) ZnO (JIS Class 1 Zinc Hana) 6 ⁇ Ca (OH) 2 (NICC5000) 4 ⁇ MgO (MgO # 150) 0.8 ⁇ N990 carbon black 15 ⁇ Processing aid (VPA No.3) 1 ⁇ Kneading, vulcanization and various tests were performed in the same manner as in Example 1 using each of the above blended components.
- DuPont Viton E60C 100 parts by weight F content 67%, ML 1 + 10 (121 ° C) 60, (Polyol vulcanization system, vulcanizing agent-containing polymer) ZnO (JIS Class 1 Zinc Hana) 6 ⁇ Ca (OH) 2 (NICC5000) 4 ⁇ MgO (MgO # 150) 0.8 ⁇ N990 carbon black 15
- Example 6 and Comparative Examples 7 to 8 are shown in Table 4 below.
- Table 4 Example 6 Comparative Example 7 Comparative Example 8 ⁇ Measurement result ⁇ Normal value Hardness Duro A: 1s (points) 65 65 68 Tensile strength (MPa) 14.2 14.7 12.6 Elongation at break (%) 300 270 220 Low temperature characteristics TR 10 (°C) -30 -30 -16 Compression set 168hrs (%) 22 18 8 500hrs (%) 42 41 20 Immersion test Rapeseed oil-based BDF30 168hrs (%) +5.2 +10.2 +8.0 500hrs (%) +6.8 +45.7 +32.4 Rape oil BDF50 168hrs (%) +6.5 +12.4 +14.6 500hrs (%) +7.3 +50.2 +43.2 Soybean oil BDF30 168hrs (%) +4.9 +12.1 +10.1 500hrs (%) +6.2 +48.7 +36.1 Palm oil BDF30 168hrs (%) +5.1 +11.6 +9.6 500hrs (%) +6.7 +47.9 +37.9
- Examples 1 to 3 The compression set resistance was good and no deterioration (swelling) with respect to BDF was observed.
- Examples 4 to 6 The compression set characteristics were generally good, and no deterioration (swelling) with respect to BDF was observed.
- Comparative Examples 1 and 2 Although the compression set resistance was good, the ZnO compounding ratio was large, and deterioration due to BDF was observed. In particular, the deterioration phenomenon was significant in Comparative Example 1 in which no hydroxide or the like was used. Comparative Example 3: No deterioration phenomenon due to BDF was observed, but the compression set resistance was significantly deteriorated.
- Comparative Example 4 Compression set resistance is good, but the compounding ratio of ZnO is large, and BDF Deterioration phenomenon is observed. Comparative Examples 5 to 7: Although the compression set characteristics are generally good, deterioration due to BDF is observed.
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Abstract
Description
実際には、市販品であるデュポン社製品Viton GAL200S 、GBL200S、GBL600S、GF200S、GF600S、ソルベェ ソレッキス社製品テクノフロンP457、P757、P459、P952、ダイキン製品ダイエルG952、G901、G902、G912、G801等がそのまま用いられる。
実際には、デュポン社製品Viton GLT200S、GLT600S、GBLT200S、GBLT600S、GFLT200S、GFLT600S、ソルベェ ソレッキス社製品テクノフロンPL455、PL855、PL557、PL458、PL958、ダイキン製品ダイエルLT302、LT301等がそのまま用いられる。
フッ素ゴム(デュポン社製品Viton GLT600S; 100重量部
F含量64%、ML1+10(121℃)65)
ZnO(ハクスティック社製品JIS第1種亜鉛華) 6 〃
Ca(OH)2(井上石灰製品NICC5000) 6 〃
2,5-ジメチル-2,5-ジ(第3ブチルパーオキシ)ヘキサン 4 〃
(日本油脂製品パーヘキサ25B、25%濃度)
N990カーボンブラック(Engineered Carbon社製品) 25 〃
加工助剤(デュポン社製品VPA No.3) 1 〃
トリアリルイソシアヌレート(日本化成製品タイク) 2 〃
以上の各配合成分を3Lニーダを用いて混練し、シート状にされたゴム生地から加硫プレスを用いての170℃、10分間のプレス加硫および220℃、22時間のオーブン加硫(二次加硫)によって、加硫ゴムシート(厚さ2mm)を得た。
常態値、低温特性:ISO 37、ASTM D412に対応するJIS K6251;ISO 48
、ASTM D1415に対応するJIS K6253:1997(硬度
Duro A:1sは、1秒後の測定値を示している);
ISO 2921、ASTM D1329に対応するJIS K6261準拠
圧縮永久歪:ISO 815、ASTM D395に対応するJIS K6262準拠
浸せき試験:ISO 1817、ASTM D471に対応するJIS K6258準拠
菜種油系BDF30または50、大豆油系BDF30またはパーム油
系BDF30中に浸せきし、150℃、168時間または500時間後
の体積変化率を測定
(ここで、BDF30およびBDF50は、それぞれ原料油脂由来
の脂肪酸メチルエステル/軽油容量比が30/70および50
/50であることを示している)
実施例1において、水酸化カルシウム量が4重量部に変更された。
実施例1において、水酸化カルシウム量が8重量部に変更された。
実施例1において、水酸化カルシウムが用いられなかった。
実施例1において、水酸化カルシウム量が2.5重量部に変更された。
実施例1において、ZnOおよびCa(OH)2が用いられず、MgO(協和化学製品MgO #150)5重量部が用いられた。
実施例1において、Ca(OH)2が用いられず、MgOが2.5重量部用いられた。
フッ素ゴム(デュポン社製品Viton GFLT600S; 100重量部
F含量67%、ML1+10(121℃)65)
ZnO(JIS第1種亜鉛華) 4 〃
Ca(OH)2(NICC5000) 2 〃
MgO(MgO #150) 2 〃
1,3-ジ(第3ブチルパーオキシイソプロピル)ベンゼン 1.2 〃
(日本油脂製品パーブチルP)
BaSO4(堺化学製品) 40 〃
タルク(浅田製粉製品) 10 〃
Cr2O3(日本化学工業製品;緑色顔料) 5 〃
加工助剤(VPA No.3) 2 〃
トリアリルイソシアヌレート(タイク) 2.5 〃
以上の各配合成分を用い、実施例1と同様に混練、加硫および各種試験が行われた。
実施例4において、Ca(OH)2量が1重量部に、MgO量が0.8重量部にそれぞれ変更して用いられた。
表2
実施例4 比較例5
〔測定結果〕
常態値
硬度Duro A:1s(ポイント) 78 77
引張強さ (MPa) 14.7 15.0
破断時伸び (%) 250 240
低温特性
TR10 (℃) -24 -24
圧縮永久歪
168hrs (%) 25 22
500hrs (%) 40 38
浸せき試験
菜種油系BDF30
168hrs (%) +3.8 +6.0
500hrs (%) +5.9 +15.9
菜種油系BDF50
168hrs (%) +4.1 +7.6
500hrs (%) +6.2 +18.5
大豆油系BDF30
168hrs (%) +3.6 +5.8
500hrs (%) +5.0 +15.1
パーム油系BDF30
168hrs (%) +3.6 +6.5
500hrs (%) +5.2 +19.0
フッ素ゴム(デュポン社製品Viton GBL600S; 100重量部
F含量68%、ML1+10(121℃)65)
ZnO(JIS第1種亜鉛華) 5 〃
Ba(OH)2(日本化学工業製品) 5 〃
2,5-ジメチル-2,5-ジ(第3ブチルパーオキシ)ヘキサン 4 〃
(パーヘキサ25B)
N990カーボンブラック 25 〃
加工助剤(VPA No.3) 1.5 〃
トリアリルイソシアヌレート(タイク) 2 〃
以上の各配合成分を用い、実施例1と同様に混練、加硫および各種試験が行われた。
実施例5において、Ba(OH)2量が1重量部に変更された。
表3
実施例5 比較例6
〔測定結果〕
常態値
硬度Duro A:1s(ポイント) 80 80
引張強さ (MPa) 18.0 16.9
破断時伸び (%) 270 250
低温特性
TR10 (℃) -16 -16
圧縮永久歪
168hrs (%) 20 19
500hrs (%) 35 33
浸せき試験
菜種油系BDF30
168hrs (%) +3.6 +9.5
500hrs (%) +5.0 +30.4
菜種油系BDF50
168hrs (%) +3.9 +10.3
500hrs (%) +6.3 +38.2
大豆油系BDF30
168hrs (%) +3.0 +8.1
500hrs (%) +4.9 +31.4
パーム油系BDF30
168hrs (%) +3.4 +8.9
500hrs (%) +5.3 +37.6
フッ素ゴム(ダイキン製品ダイエルLT302; 100重量部
F含量64、ML1+10(121℃)45)
ZnO(JIS第1種亜鉛華) 8 〃
MgO(MgO #150) 5 〃
2,5-ジメチル-2,5-ジ(第3ブチルパーオキシ)ヘキサン 5 〃
(パーヘキサ25B)
N990カーボンブラック 5 〃
加工助剤(VPA No.3) 1.5 〃
トリアリルイソシアヌレート(タイク) 1.5 〃
以上の各配合成分を用い、実施例1と同様に混練、加硫および各種試験が行われた。
実施例6において、MgO量が2重量部に変更された。
フッ素ゴム(デュポン社製品Viton E60C; 100重量部
F含量67%、ML1+10(121℃)60、
ポリオール加硫系、加硫剤含有ポリマー)
ZnO(JIS第1種亜鉛華) 6 〃
Ca(OH)2(NICC5000) 4 〃
MgO(MgO #150) 0.8 〃
N990カーボンブラック 15 〃
加工助剤(VPA No.3) 1 〃
以上の各配合成分を用い、実施例1と同様に混練、加硫および各種試験が行われた。
表4
実施例6 比較例7 比較例8
〔測定結果〕
常態値
硬度Duro A:1s(ポイント) 65 65 68
引張強さ (MPa) 14.2 14.7 12.6
破断時伸び (%) 300 270 220
低温特性
TR10 (℃) -30 -30 -16
圧縮永久歪
168hrs (%) 22 18 8
500hrs (%) 42 41 20
浸せき試験
菜種油系BDF30
168hrs (%) +5.2 +10.2 +8.0
500hrs (%) +6.8 +45.7 +32.4
菜種油系BDF50
168hrs (%) +6.5 +12.4 +14.6
500hrs (%) +7.3 +50.2 +43.2
大豆油系BDF30
168hrs (%) +4.9 +12.1 +10.1
500hrs (%) +6.2 +48.7 +36.1
パーム油系BDF30
168hrs (%) +5.1 +11.6 +9.6
500hrs (%) +6.7 +47.9 +37.9
実施例1~3:耐圧縮永久歪特性は良好で、BDFに対しての劣化(膨潤)は
認められなかった。
実施例4~6:耐圧縮永久歪特性は概ね良好で、BDFに対しての劣化(膨
潤)は認められなかった。
比較例1~2:耐圧縮永久歪特性は良好であるが、ZnOの配合比が大きく
、BDFによる劣化現象が認められた。特に、水酸化物等の
併用のない比較例1では、劣化現象が顕著であった。
比較例3:BDFによる劣化現象はみられなかったが、耐圧縮永久歪特性が
顕著に悪化している。
比較例4:耐圧縮永久歪特性は良好であるが、ZnOの配合比が大きく、BDF
による劣化現象が認められる。
比較例5~7:耐圧縮永久歪特性は概ね良好であるが、BDFによる劣化現
象が認められる。
Claims (8)
- (A)パーオキサイド架橋可能なフッ素ゴム100重量部、(B)ZnO 1~15重量部、(C)ZnO重量に対して0.5以上となる重量比の塩基性金属水酸化物およびZnO以外の金属酸化物の少くとも1種および(D)有機過酸化物0.5~10重量部を配合してなるフッ素ゴム組成物。
- 塩基性金属水酸化物がCa(OH)2またはBa(OH)2である請求項1記載のフッ素ゴム組成物。
- ZnO以外の金属酸化物がMgOである請求項1記載のフッ素ゴム組成物。
- 塩基性金属水酸化物およびZnO以外の金属酸化物の少くとも1種である(C)成分が(B)成分であるZnOに対して0.5~2.0の重量比で用いられた請求項1記載のフッ素ゴム組成物。
- シール材の加硫成形材料として用いられる請求項1記載のフッ素ゴム組成物。
- 請求項5記載のフッ素ゴム組成物を加硫成形して得られたシール材。
- バイオディーゼル燃料に接触する用途に用いられる請求項6記載のシール材。
- バイオディーゼル燃料が、原料油脂をエステル化した脂肪酸メチルエステルと軽油との混合物である請求項7記載のシール材。
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EP10815372.7A EP2479211B1 (en) | 2009-09-14 | 2010-09-08 | Fluororubber composition |
JP2011530845A JP5440605B2 (ja) | 2009-09-14 | 2010-09-08 | シール材 |
CN2010800418582A CN102575078A (zh) | 2009-09-14 | 2010-09-08 | 氟橡胶组合物 |
US13/395,191 US9074116B2 (en) | 2009-09-14 | 2010-09-08 | Fluororubber composition |
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US (1) | US9074116B2 (ja) |
EP (1) | EP2479211B1 (ja) |
JP (1) | JP5440605B2 (ja) |
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WO2017115812A1 (ja) * | 2015-12-28 | 2017-07-06 | 旭硝子株式会社 | フルオロエラストマー組成物および架橋物の製造方法 |
JPWO2017122700A1 (ja) * | 2016-01-14 | 2018-11-22 | Agc株式会社 | 水性分散液、その製造方法、水性塗料および塗装物品 |
WO2021065199A1 (ja) * | 2019-10-02 | 2021-04-08 | ユニマテック株式会社 | フッ素ゴム組成物およびシール材 |
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CN103030823B (zh) * | 2012-12-06 | 2015-06-10 | 上海三爱富新材料股份有限公司 | 可交联的含氟弹性体、其制备方法和组合物 |
CN102993609B (zh) * | 2012-12-08 | 2014-12-10 | 揭阳市天诚密封件有限公司 | 一种耐生物燃料油氟橡胶组合物 |
CN103923419B (zh) * | 2014-03-14 | 2016-05-25 | 太仓冠联高分子材料有限公司 | 一种适应低温低压缩变形的彩色氟橡胶及其制备方法 |
JP2019517622A (ja) * | 2016-06-13 | 2019-06-24 | ソルベイ スペシャルティ ポリマーズ イタリー エス.ピー.エー. | 硬化性フルオロエラストマー組成物 |
CN110511514B (zh) * | 2019-08-31 | 2021-08-06 | 中国石油集团川庆钻探工程有限公司 | 一种耐高温高压的橡胶材料及其制备方法 |
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EP2479211A4 (en) | 2013-06-05 |
EP2479211B1 (en) | 2018-08-22 |
JPWO2011030777A1 (ja) | 2013-02-07 |
US20120172513A1 (en) | 2012-07-05 |
JP5440605B2 (ja) | 2014-03-12 |
US9074116B2 (en) | 2015-07-07 |
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