WO2015011971A1 - シリコーンゴム組成物 - Google Patents
シリコーンゴム組成物 Download PDFInfo
- Publication number
- WO2015011971A1 WO2015011971A1 PCT/JP2014/063400 JP2014063400W WO2015011971A1 WO 2015011971 A1 WO2015011971 A1 WO 2015011971A1 JP 2014063400 W JP2014063400 W JP 2014063400W WO 2015011971 A1 WO2015011971 A1 WO 2015011971A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- silicone rubber
- rubber composition
- parts
- mass
- group
- Prior art date
Links
Images
Classifications
-
- 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
- C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
Definitions
- the present invention relates to a silicone rubber composition that gives a cured product having excellent fire resistance (sinterability after combustion) and excellent roll workability during kneading.
- fire-resistant materials for buildings have been molded from rubber materials such as chloroprene rubber and ethylene-propylene-diene rubber, but these rubber materials increase the useful life of buildings. Along with this, it has become impossible to meet demands for improvement in weather resistance, creep resistance, and prevention of harmful gas generation during combustion. Therefore, in recent years, a construction made of silicone rubber having excellent heat and weather resistance and creep resistance has been used as a fireproof material for construction.
- an organopolysiloxane having at least two hydroxyl groups bonded to silicon atoms in one molecule and an organosilane or organopolysiloxane having at least two hydrolyzable groups bonded to silicon atoms in one molecule A composition composed of siloxane with zinc oxide and / or aluminum hydroxide and a platinum compound added (Japanese Patent Laid-Open No. 60-141778), or one of manganese carbonate, mica, black bengara and zinc oxide and / or quartz A combination of powder and a platinum compound (Japanese Patent Publication No. 5-73158) is known.
- the inventors of the present invention have a degree of polymerization of 100 or more, an organopolysiloxane having at least two alkenyl groups bonded to a silicon atom, and a specific surface area (BET method).
- BET method a specific surface area
- the present invention provides the following silicone rubber composition.
- (A) Organopolysiloxane having a degree of polymerization of 100 or more and having at least two alkenyl groups bonded to silicon atoms in the molecule: 100 parts by mass
- (D) Curing agent: A silicone rubber composition containing an effective amount.
- [2] [1] The silicone rubber composition according to [1], wherein the calcined mica is obtained by firing a pulverized muscovite.
- (A) component is the following average composition formula (I) R a SiO (4-a) / 2 (I)
- R represents the same or different unsubstituted or substituted monovalent hydrocarbon group, and 0.01 to 10 mol% of the total R groups is an alkenyl group.
- A is 1.95 to 2.
- (It is a positive number of 05.)
- (D) The silicone rubber composition according to any one of [1] to [3], wherein the component is an organic peroxide.
- a silicone rubber composition excellent in roll workability during kneading can be provided, and the composition is cured to form a silicone rubber excellent in shape retention after combustion (sintering).
- the present composition is particularly useful as a fireproof material for buildings such as a fireproof gasket.
- Example of this invention it is the schematic explaining the measuring method of breaking strength.
- the component (A) used in the silicone rubber composition of the present invention has a degree of polymerization (or number of silicon atoms in the molecule) of 100 or more, preferably 1,000 or more, particularly 1,200 or more, and silicon atoms Is an organopolysiloxane having at least two alkenyl groups bonded to and acts as the main agent (base polymer) of the composition.
- the alkenyl group-containing organopolysiloxane of component (A) is preferably Is a raw rubber-like component at room temperature (25 ° C.) (that is, a non-liquid component having a high degree of polymerization, high viscosity, and no self-fluidity).
- the silicone rubber composition of the present invention containing such a raw rubber-like alkenyl group-containing organopolysiloxane as a main ingredient is usually a millable type (that is, raw rubber-like, and subjected to shear stress by a kneader such as a roll mill.
- the alkenyl group-containing organopolysiloxane of component (A) for example, those represented by the following average composition formula (I) are typical.
- R a SiO (4-a) / 2 (I) Wherein R represents the same or different unsubstituted or substituted monovalent hydrocarbon group, and a is 1.95 to 2.05, preferably 1.98 to 2.02, more preferably 1.99 to 2. .01 is a positive number.
- R represents the same or different unsubstituted or substituted monovalent hydrocarbon group, usually having 1 to 12 carbon atoms, particularly preferably 1 to 8 carbon atoms.
- a methyl group, a vinyl group, a phenyl group, and a trifluoropropyl group are preferable, and a methyl group and a vinyl group are particularly preferable.
- the methyl group is preferably 80 mol% or more, particularly 90 mol% or more in R, and more preferably all R groups except for alkenyl groups are methyl groups.
- the alkenyl group-containing organopolysiloxane of component (A) is composed of dimethylsiloxane units, or a phenyl group or vinyl group is part of the main chain of the dimethylpolysiloxane.
- a diphenylsiloxane unit having a 3,3,3-trifluoropropyl group, a methylvinylsiloxane unit, a methyl-3,3,3-trifluoropropylsiloxane unit or the like is preferably used.
- the organopolysiloxane of component (A) must have 2 or more (usually 2 to 50, especially about 2 to 20) alkenyl groups, preferably vinyl groups, in one molecule. It is preferable that 0.01 to 10 mol%, particularly 0.02 to 5 mol%, of all R groups in the average composition formula (I) is an alkenyl group.
- the alkenyl group may be bonded to a silicon atom at the molecular chain end, or may be bonded to a silicon atom in the middle of the molecular chain (non-terminal), or both. It preferably contains an alkenyl group bonded to a terminal silicon atom.
- the molecular chain terminal is preferably blocked with a dimethylvinylsilyl group, a methyldivinylsilyl group, a trivinylsilyl group or the like.
- a is a positive number of 1.95 to 2.05
- the molecular structure of the organopolysiloxane of the component (A) basically has a main chain of diorganosiloxane units ( R 2 SiO 2/2 ), which is generally a linear structure in which both ends of the molecular chain are blocked with a triorganosiloxy group (R 3 SiO 1/2 ). It may be a branched structure containing a small amount of branching units (RSiO 3/2 ) in the main chain as long as it is not damaged (R is the same as above).
- the degree of polymerization (or the number of silicon atoms in the molecule) of component (A) component is 100 or more (preferably 1,000 or more), more preferably 1,200 or more, still more preferably 3,000 to 100 000, particularly preferably 4,000 to 20,000. If the degree of polymerization is less than 100, sufficient rubber strength cannot be obtained.
- the degree of polymerization (or molecular weight) can be usually determined as the weight average degree of polymerization (or weight average molecular weight) in terms of polystyrene in GPC (gel permeation chromatography) analysis using toluene or the like as a developing solvent. .
- organopolysiloxane of component (A) may be used alone or in combination of two or more having different molecular structures and polymerization degrees.
- organopolysiloxanes are subjected to ring-opening polymerization by a known method, for example, by (co) hydrolytic condensation of one or more of organohalogenosilanes, or by using a cyclic polysiloxane using an alkaline or acidic catalyst. Can be obtained.
- Reinforcing silica as component (B) is reinforcing silica usually used in silicone rubber compositions, such as dry silica such as fumed silica (fumed silica) and calcined silica, and wet silica such as precipitated silica.
- a fine powder is exemplified, and in terms of heat resistance, fumed silica is preferred.
- the specific surface area (BET method) is 50 m 2 / g or more, preferably 100 m 2 / g or more, particularly preferably 100 to 400 m 2 / g. When the specific surface area (BET method) is less than 50 m 2 / g, the mechanical strength is insufficiently imparted.
- Component (B) reinforcing silica is added in an amount of 10 to 100 parts by weight, preferably 20 to 70 parts by weight, particularly preferably 30 to 60 parts by weight, based on 100 parts by weight of the organopolysiloxane of component (A). It is. When the amount is less than 10 parts by mass, the amount added is too small to obtain a sufficient reinforcing effect. When the amount exceeds 100 parts by mass, the workability is deteriorated and the mechanical strength is lowered.
- the fired mica of the component (C) is a characteristic component of the present invention, and the fire resistance of the silicone rubber obtained by curing the silicone rubber composition of the present invention (that is, sinterability after combustion (shape retention)) Is a component that significantly improves.
- Commonly used wet mica and dry mica are known as fire resistance improvers for silicone rubber, but especially when blended into a millable silicone rubber composition, the composition manufacturing process (kneading process in a roll mill, etc.) Increases the adhesiveness of the roll, making the kneading operation difficult.
- Mica is heat-treated (baked) under a temperature condition of about 800 ° C. or higher to obtain calcined mica, so that moisture, silica, etc. contained in untreated mica are removed.
- the calcined mica is preferably a calcined muscovite pulverized product.
- calcined mica for example, calcined mica manufactured by Repco Co., Ltd. produced by calcining a pulverized muscovite product can be used.
- the calcined mica needs to have an average particle size (d50) of 20 ⁇ m or less (for example, about 0.5 to 20 ⁇ m, particularly about 1 to 18 ⁇ m). If it is larger than this, when the silicone rubber molded product is heated (burned or sintered) at a high temperature, the ceramicization after sintering becomes insufficient, and the shape retention of the ashed (sintered) silicone rubber molded product is reduced. descend.
- an average particle diameter can be calculated
- the addition amount of the component (C) is 1 to 100 parts by mass, preferably 10 to 60 parts by mass with respect to 100 parts by mass of the organopolysiloxane of the component (A). If it is less than 1 part by mass, the effect of improving the fire resistance is insufficient, and if it exceeds 100 parts by mass, physical properties such as strength and elongation of the silicone rubber are deteriorated.
- the curing agent for the component is not particularly limited as long as it can cure the silicone rubber composition of the present invention. Therefore, a known vulcanizing agent (curing agent) for silicone rubber, for example, an organic peroxide vulcanizing agent (curing agent) or an addition vulcanizing agent (curing agent) can be used.
- a known vulcanizing agent (curing agent) for silicone rubber for example, an organic peroxide vulcanizing agent (curing agent) or an addition vulcanizing agent (curing agent) can be used.
- organic peroxide used as the organic peroxide vulcanizing agent (curing agent) examples include benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, p-methylbenzoyl peroxide, o-methylbenzoyl peroxide, 2 , 4-Dicumyl peroxide, 2,5-dimethyl-bis (2,5-t-butylperoxy) hexane, di-t-butyl peroxide, t-butylperbenzoate, 1,6-hexanediol-bis -T-butyl peroxycarbonate and the like. These may be used alone or in combination of two or more.
- the organic peroxide may be added in an amount sufficient to cure the silicone rubber composition, but is 0.1 to 10 parts by weight, particularly 0.2 to 10 parts by weight per 100 parts by weight of component (A). 5 parts by mass is preferred.
- platinum-based catalysts platinum element simple substance, platinum compound, platinum complex, chloroplatinic acid, alcohol compound of chloroplatinic acid, aldehyde compound, ether compound, complex with various olefins, rhodium similar to the platinum compound, Examples thereof include platinum group metal catalysts such as palladium and ruthenium compounds.
- the addition amount of the platinum group metal catalyst is preferably in the range of 1 to 2,000 ppm in terms of the mass of the platinum group metal with respect to the organopolysiloxane of component (A).
- the organohydrogenpolysiloxane used as a curing agent is 2 or more (usually 2 to 200), preferably 3 or more (for example, 3 to 150, preferably 4) in the molecule.
- Organohydrogenpolysiloxane containing hydrogen atoms (SiH groups) bonded to silicon atoms (about 100).
- the organohydrogenpolysiloxane is a linear, branched, cyclic, three-dimensional network structure. However, it is preferable that the degree of polymerization (or the number of silicon atoms in the molecule) is 300 or less (for example, about 2 to 300, especially about 3 to 150).
- the addition amount of the organohydrogenpolysiloxane as the curing agent is such that the hydrogen atom (SiH group) directly bonded to the silicon atom in the organohydrogenpolysiloxane is compared with the alkenyl group in the organopolysiloxane of the component (A). It is desirable that the molar ratio is 0.5 to 5 mol / mol.
- a reinforcing silica filler dispersant for example, an ⁇ , ⁇ -silanol group-blocking agent
- a reinforcing silica filler dispersant for example, an ⁇ , ⁇ -silanol group-blocking agent
- Low degree of polymerization diorganopolysiloxane, etc. platinum compounds (for example, platinum compounds similar to the platinum-based catalysts exemplified as components in the aforementioned addition vulcanizing agent), imparting flame retardancy such as iron oxide and halogen compounds
- Known additives in the silicone rubber composition such as an agent, a heat resistance improver, an anti-aging agent, an ultraviolet absorber, a colorant, and a release agent can be added. It is also possible to form a sponge by adding a foaming agent.
- the manufacturing method of the silicone rubber composition of the present invention is not particularly limited, it can be obtained by kneading a predetermined amount of the above-described components with a known kneader such as a two-roll (roll mill), a kneader, or a Banbury mixer. .
- heat treatment (kneading under heating) may be performed.
- a method in which the components (A) and (B) are kneaded and heat-treated as necessary, and then the component (D) is added at room temperature is preferable.
- the component (C) may be blended before or after the heat treatment.
- the heat treatment temperature and time are not particularly limited, but it is preferably 100 to 250 ° C., particularly 140 to 180 ° C. for 30 minutes to 5 hours.
- a molding method may be selected according to the required use (molded product). Specific examples include compression molding, injection molding, transfer molding, normal pressure hot air vulcanization, steam vulcanization, and the like.
- the curing conditions are not particularly limited and may be appropriately selected depending on the curing method and the molded product, and are generally 80 to 600 ° C., particularly 100 to 450 ° C., several seconds to several days, particularly about 5 seconds to 1 hour. Further, secondary vulcanization may be performed as necessary. Secondary vulcanization is usually at 180 to 250 ° C. for about 1 to 10 hours.
- the silicone rubber composition of the present invention is particularly useful as a fireproof material for buildings such as a fireproof gasket.
- the degree of polymerization indicates a weight average degree of polymerization in terms of polystyrene in GPC (gel permeation chromatography) analysis using toluene as a developing solvent.
- An average particle diameter shows the cumulative weight average diameter in the particle size distribution measurement by a laser beam diffraction method; d50.
- Example 1 It consists of 99.825 mol% of dimethylsiloxane units, 0.15 mol% of methylvinylsiloxane units, 0.025 mol% of dimethylvinylsiloxy units as siloxy units blocking both ends of the molecular chain, and has an average degree of polymerization of about 7,000.
- this composition was press-molded under conditions of primary vulcanization 120 ° C./10 minutes and secondary vulcanization 200 ° C./4 hours to prepare a 2 mm thick silicone rubber sheet.
- a 3.5 cm ⁇ 3.5 cm sheet piece was cut out from the rubber sheet and heated in a sintering furnace at 800 ° C. for 5 minutes.
- the obtained sintered body was broken with a load cell tester capable of measuring up to 10 kgf as shown in FIG. 1, and its breaking strength (sinterability) was measured.
- 1 is a load cell
- 2 is a sintered body
- 3 is a pedestal.
- Table 1 is a load cell
- 2 is a sintered body
- 3 is a pedestal. The results are shown in Table 1.
- Example 2 In place of 40 parts of calcined mica used in Example 1 (manufactured by Repco Co., Ltd., average particle size 18 ⁇ m), calcined mica (manufactured by Repco Co., Ltd.) having an average particle size of 22 ⁇ m produced by calcining pulverized muscovite ) A silicone rubber compound and a silicone rubber composition were prepared in the same manner as in Example 1 except that 40 parts were used. The obtained silicone rubber compound and the silicone rubber composition were similarly tested and evaluated for roll processability and sinterability. The results are shown in Table 1.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
〔1〕
(A)重合度が100以上であって、分子中に珪素原子に結合したアルケニル基を少なくとも2個有するオルガノポリシロキサン: 100質量部、
(B)比表面積(BET法)が50m2/g以上である補強性シリカ: 10~100質量部、
(C)平均粒径が20μm以下である焼成マイカ: 1~100質量部、
(D)硬化剤: 有効量
を含有するシリコーンゴム組成物。
〔2〕
焼成マイカが白雲母粉砕品を焼成したものである〔1〕記載のシリコーンゴム組成物。
〔3〕
(A)成分が、下記平均組成式(I)
RaSiO(4-a)/2 (I)
(式中、Rは同一又は異種の非置換又は置換一価炭化水素基を示すが、全R基に対して0.01~10モル%がアルケニル基である。aは1.95~2.05の正数である。)
で示され、一分子中に少なくとも2個のアルケニル基を有し、重合度が3,000~100,000であるオルガノポリシロキサンである〔1〕又は〔2〕記載のシリコーンゴム組成物。
〔4〕
(D)成分が有機過酸化物である〔1〕~〔3〕のいずれかに記載のシリコーンゴム組成物。
〔5〕
(D)成分が、一分子中に2個以上のSiH基を含有するオルガノハイドロジェンポリシロキサンと、白金族金属系触媒との組み合せである〔1〕~〔3〕のいずれかに記載のシリコーンゴム組成物。
〔6〕
耐火ガスケット用である〔1〕~〔5〕のいずれかに記載のシリコーンゴム組成物。
本発明のシリコーンゴム組成物に使用する(A)成分は、重合度(又は分子中の珪素原子数)が100以上、好ましくは1,000以上、特には1,200以上であって、珪素原子に結合した少なくとも2個のアルケニル基を有するオルガノポリシロキサンであり、本組成物の主剤(ベースポリマー)として作用するものであるが、この(A)成分のアルケニル基含有オルガノポリシロキサンは、好適には、室温(25℃)で生ゴム状(即ち、高重合度かつ、高粘度で自己流動性のない非液状)の成分である。このような生ゴム状のアルケニル基含有オルガノポリシロキサンを主剤として配合する本発明のシリコーンゴム組成物は、通常、ミラブル型の(即ち、生ゴム状であって、ロールミル等の混練機によってせん断応力下に均一に混練することが可能な)組成物を与えるものである。(A)成分のアルケニル基含有オルガノポリシロキサンとしては、例えば、下記平均組成式(I)で表されるものが代表的である。
RaSiO(4-a)/2 (I)
(式中、Rは同一又は異種の非置換又は置換一価炭化水素基を示し、aは1.95~2.05、好ましくは1.98~2.02、より好ましくは1.99~2.01の正数である。)
なお、平均粒径は、例えば、レーザー光回折法による粒度分布測定における累積重量平均径(又はメジアン径、d50)等として求めることができる。
有機過酸化物の添加量は、シリコーンゴム組成物を硬化させるのに十分な量であればよいが、(A)成分100質量部に対して0.1~10質量部、特に0.2~5質量部が好ましい。
白金族金属系触媒の添加量は、(A)成分のオルガノポリシロキサンに対し、白金族金属の質量換算で1~2,000ppmの範囲とすることが望ましい。
ジメチルシロキサン単位99.825モル%、メチルビニルシロキサン単位0.15モル%、分子鎖両末端を封鎖するシロキシ単位としてジメチルビニルシロキシ単位0.025モル%からなり、平均重合度約7,000である直鎖状ジメチルポリシロキサン生ゴム100部、比表面積(BET法)200m2/gの煙霧質シリカ(エロジル-200(日本アエロジル(株)製))45部、分子鎖両末端にシラノール基を有し、重合度が10の直鎖状ジメチルポリシロキサン10部をニーダーで配合し、150℃で2時間熱処理を行い、シリコーンゴムコンパウンドを作製した。
得られたゴムコンパウンドに、白雲母粉砕品を焼成して製造された焼成マイカ((株)レプコ製、平均粒径18μm)を40部、更に、塩化白金酸のアルコール溶液(Pt濃度2質量%)0.1部を2本ロールで添加し、次いでp-メチルベンゾイルパーオキサイド50質量%ペースト1.3部を添加してシリコーンゴム組成物を調製した。
(粘着性)
○:ハードクロムメッキの6インチ2本ロールにおいて、ロール間隔2mm、サンプル量200gで、丸太どりが容易。
△:ハードクロムメッキの6インチ2本ロールにおいて、ロール間隔2mm、サンプル量200gで、丸太どりがやや引っかかる。
×:ハードクロムメッキの6インチ2本ロールにおいて、ロール間隔2mm、サンプル量200gで、丸太どりが困難で、組成物がロールにへばりつく。
実施例1において使用した焼成マイカ((株)レプコ製、平均粒径18μm)40部に代えて、マイカとして、市販の白雲母湿式粉砕品(非焼成品、平均粒径22μm)40部を使用した以外は実施例1と同様にしてシリコーンゴムコンパウンド及びシリコーンゴム組成物を調製した。
得られたシリコーンゴムコンパウンド及びシリコーンゴム組成物について、同様にしてロール加工性、焼結性を試験、評価した。結果を表1に示す。
実施例1において使用した焼成マイカ((株)レプコ製、平均粒径18μm)40部に代えて、白雲母粉砕品を焼成して製造された平均粒径22μmの焼成マイカ((株)レプコ製)40部を使用した以外は実施例1と同様にしてシリコーンゴムコンパウンド及びシリコーンゴム組成物を調製した。
得られたシリコーンゴムコンパウンド及びシリコーンゴム組成物について、同様にしてロール加工性、焼結性を試験、評価した。結果を表1に示す。
2 焼結体
3 台座
Claims (6)
- (A)重合度が100以上であって、分子中に珪素原子に結合したアルケニル基を少なくとも2個有するオルガノポリシロキサン: 100質量部、
(B)比表面積(BET法)が50m2/g以上である補強性シリカ: 10~100質量部、
(C)平均粒径が20μm以下である焼成マイカ: 1~100質量部、
(D)硬化剤: 有効量
を含有するシリコーンゴム組成物。 - 焼成マイカが白雲母粉砕品を焼成したものである請求項1記載のシリコーンゴム組成物。
- (A)成分が、下記平均組成式(I)
RaSiO(4-a)/2 (I)
(式中、Rは同一又は異種の非置換又は置換一価炭化水素基を示すが、全R基に対して0.01~10モル%がアルケニル基である。aは1.95~2.05の正数である。)
で示され、一分子中に少なくとも2個のアルケニル基を有し、重合度が3,000~100,000であるオルガノポリシロキサンである請求項1又は2記載のシリコーンゴム組成物。 - (D)成分が有機過酸化物である請求項1~3のいずれか1項記載のシリコーンゴム組成物。
- (D)成分が、一分子中に2個以上のSiH基を含有するオルガノハイドロジェンポリシロキサンと、白金族金属系触媒との組み合せである請求項1~3のいずれか1項記載のシリコーンゴム組成物。
- 耐火ガスケット用である請求項1~5のいずれか1項記載のシリコーンゴム組成物。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14830254.0A EP3026085B1 (en) | 2013-07-22 | 2014-05-21 | Silicone rubber composition |
JP2015528172A JP6020727B2 (ja) | 2013-07-22 | 2014-05-21 | シリコーンゴム組成物 |
ES14830254T ES2820534T3 (es) | 2013-07-22 | 2014-05-21 | Composición de caucho de silicona |
CN201480041512.0A CN105452385B (zh) | 2013-07-22 | 2014-05-21 | 硅橡胶组合物 |
US14/901,442 US20160369143A1 (en) | 2013-07-22 | 2014-05-21 | Silicone rubber composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013151531 | 2013-07-22 | ||
JP2013-151531 | 2013-07-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015011971A1 true WO2015011971A1 (ja) | 2015-01-29 |
Family
ID=52393028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/063400 WO2015011971A1 (ja) | 2013-07-22 | 2014-05-21 | シリコーンゴム組成物 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160369143A1 (ja) |
EP (1) | EP3026085B1 (ja) |
JP (1) | JP6020727B2 (ja) |
CN (1) | CN105452385B (ja) |
ES (1) | ES2820534T3 (ja) |
WO (1) | WO2015011971A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019110140A (ja) * | 2019-04-02 | 2019-07-04 | 三菱電線工業株式会社 | 電池ホルダー及びそれを用いた電池モジュール |
JP7527742B2 (ja) | 2021-08-19 | 2024-08-05 | 信越化学工業株式会社 | シリコーンゴム組成物 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105838075A (zh) * | 2016-04-26 | 2016-08-10 | 重庆泰山电缆有限公司 | 一种能够提高耐火性能的硅胶配方 |
JP2018115242A (ja) * | 2017-01-17 | 2018-07-26 | 株式会社アマデラスホールディングス | ポリオレフィン系ゴム組成物 |
US10954386B2 (en) * | 2019-05-29 | 2021-03-23 | Smp Technologies Inc. | Silicone admixture and cured product of the same |
CN117417638A (zh) * | 2023-10-17 | 2024-01-19 | 合肥华城材料科技有限责任公司 | 耐高温阻燃型云母复合有机硅橡胶及其制备方法与应用 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5160240A (ja) * | 1974-11-25 | 1976-05-26 | Toray Silicone Co | |
JPS60141778A (ja) | 1983-12-28 | 1985-07-26 | Shin Etsu Chem Co Ltd | 耐火防水シ−ル材 |
JPS63191841A (ja) | 1987-02-04 | 1988-08-09 | Toray Silicone Co Ltd | 目地用定形シ−ル材 |
JPH0573158B2 (ja) | 1986-08-20 | 1993-10-13 | Shinetsu Chem Ind Co | |
JPH0912888A (ja) * | 1995-06-30 | 1997-01-14 | Shin Etsu Polymer Co Ltd | 耐火難燃性シリコーンゴム組成物 |
JP2000169706A (ja) | 1998-12-03 | 2000-06-20 | Shin Etsu Chem Co Ltd | 耐火性シリコーンゴム組成物 |
JP2002105317A (ja) * | 2000-09-28 | 2002-04-10 | Dow Corning Toray Silicone Co Ltd | 耐火性シリコーンゴム用組成物および耐火性シリコーンゴム |
JP2004231865A (ja) * | 2003-01-31 | 2004-08-19 | Tokai Rubber Ind Ltd | 耐熱エアホース |
JP2012124428A (ja) * | 2010-12-10 | 2012-06-28 | Mitsubishi Chemicals Corp | 半導体発光装置用樹脂成形体 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69107672T2 (de) * | 1990-05-07 | 1995-07-27 | Shinetsu Chemical Co | Schäumbare Silikonkautschukzusammensetzung. |
GB0808681D0 (en) * | 2008-05-14 | 2008-06-18 | Dow Corning | Silicone rubber compositions |
CN102424725A (zh) * | 2011-11-29 | 2012-04-25 | 四川大学 | 一种耐高温抗烧蚀橡胶组合物及其制备方法 |
-
2014
- 2014-05-21 US US14/901,442 patent/US20160369143A1/en not_active Abandoned
- 2014-05-21 WO PCT/JP2014/063400 patent/WO2015011971A1/ja active Application Filing
- 2014-05-21 ES ES14830254T patent/ES2820534T3/es active Active
- 2014-05-21 JP JP2015528172A patent/JP6020727B2/ja active Active
- 2014-05-21 EP EP14830254.0A patent/EP3026085B1/en active Active
- 2014-05-21 CN CN201480041512.0A patent/CN105452385B/zh active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5160240A (ja) * | 1974-11-25 | 1976-05-26 | Toray Silicone Co | |
JPS60141778A (ja) | 1983-12-28 | 1985-07-26 | Shin Etsu Chem Co Ltd | 耐火防水シ−ル材 |
JPH0573158B2 (ja) | 1986-08-20 | 1993-10-13 | Shinetsu Chem Ind Co | |
JPS63191841A (ja) | 1987-02-04 | 1988-08-09 | Toray Silicone Co Ltd | 目地用定形シ−ル材 |
JPH0912888A (ja) * | 1995-06-30 | 1997-01-14 | Shin Etsu Polymer Co Ltd | 耐火難燃性シリコーンゴム組成物 |
JP2000169706A (ja) | 1998-12-03 | 2000-06-20 | Shin Etsu Chem Co Ltd | 耐火性シリコーンゴム組成物 |
JP2002105317A (ja) * | 2000-09-28 | 2002-04-10 | Dow Corning Toray Silicone Co Ltd | 耐火性シリコーンゴム用組成物および耐火性シリコーンゴム |
JP2004231865A (ja) * | 2003-01-31 | 2004-08-19 | Tokai Rubber Ind Ltd | 耐熱エアホース |
JP2012124428A (ja) * | 2010-12-10 | 2012-06-28 | Mitsubishi Chemicals Corp | 半導体発光装置用樹脂成形体 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019110140A (ja) * | 2019-04-02 | 2019-07-04 | 三菱電線工業株式会社 | 電池ホルダー及びそれを用いた電池モジュール |
JP7527742B2 (ja) | 2021-08-19 | 2024-08-05 | 信越化学工業株式会社 | シリコーンゴム組成物 |
Also Published As
Publication number | Publication date |
---|---|
JP6020727B2 (ja) | 2016-11-02 |
CN105452385A (zh) | 2016-03-30 |
JPWO2015011971A1 (ja) | 2017-03-02 |
ES2820534T3 (es) | 2021-04-21 |
EP3026085B1 (en) | 2020-08-12 |
US20160369143A1 (en) | 2016-12-22 |
EP3026085A1 (en) | 2016-06-01 |
CN105452385B (zh) | 2018-09-04 |
EP3026085A4 (en) | 2017-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6020727B2 (ja) | シリコーンゴム組成物 | |
EP3533838B1 (en) | Heat-resistant millable silicone rubber composition | |
EP2554585B1 (en) | Silicone Rubber Composition Having Excellent Heat Resistance | |
EP3127952B1 (en) | Addition-curable silicone rubber composition | |
JP2004018701A (ja) | 耐トラッキング性シリコーンゴム組成物及びこれを用いた電力ケーブル | |
JP3111837B2 (ja) | 耐火性シリコーンゴム組成物 | |
JP5768824B2 (ja) | 発泡性シリコーンゴム組成物及びシリコーンゴムスポンジ | |
CN110892023B (zh) | 加成固化型有机硅组合物和硅橡胶固化物 | |
JP5862512B2 (ja) | シリコーンゴム硬化物の難燃性向上方法 | |
JP7156216B2 (ja) | ミラブル型シリコーンゴム組成物及びその硬化物、並びにミラブル型シリコーンゴム組成物用シリコーンゴムコンパウンド | |
EP3473661B1 (en) | Silicone composition, a cured silicone rubber product and a power cable | |
JP2000169706A (ja) | 耐火性シリコーンゴム組成物 | |
JP7527742B2 (ja) | シリコーンゴム組成物 | |
JP6245119B2 (ja) | シリコーンゴム組成物及びシリコーンゴム硬化物の引裂き強度を向上させる方法 | |
JP7526115B2 (ja) | 耐熱性ミラブル型シリコーンゴム組成物 | |
JP2021080415A (ja) | キーパッド作製用シリコーンゴム組成物及びキーパッド | |
JP4725713B2 (ja) | シリコーンゴム組成物及びシリコーンゴム組成物の硬化物の耐熱性を向上させる方法 | |
EP4296304A1 (en) | Heat-resistant millable fluorosilicone rubber composition | |
JP2020122107A (ja) | シリコーンゴム組成物 | |
JP2012219211A (ja) | シリコーンゴム成型物の耐スチーム性向上方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480041512.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14830254 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015528172 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14901442 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014830254 Country of ref document: EP |