摘要:
An addition curable self-adhesive silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) an aromatic ring-free organohydrogenpolysiloxane containing at least two SiH groups, and (F) an addition reaction catalyst, with a SiH/alkenyl molar ratio ranging from 0.8 to 5.0, is briefly moldable and cures to various metals and organic resins.
摘要:
An addition curable self-adhesive silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) an aromatic ring-free organohydrogenpolysiloxane containing at least two SiH groups, and (F) an addition reaction catalyst, with a SiH/alkenyl molar ratio ranging from 0.8 to 5.0, is briefly moldable and cures to various metals and organic resins.
摘要:
An addition curable self-adhesive silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) another organohydrogenpolysiloxane containing no other reactive groups than SiH groups, and (F) an addition reaction catalyst, with a SiH/alkenyl molar ratio ranging from 0.8 to 5.0, is briefly moldable and cures to various metals and organic resins.
摘要:
An addition curable self-adhesive silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) another organohydrogenpolysiloxane containing no other reactive groups than SiH groups, and (F) an addition reaction catalyst, with a SiH/alkenyl molar ratio ranging from 0.8 to 5.0, is briefly moldable and cures to various metals and organic resins.
摘要:
An addition curing silicone rubber composition and a cured product thereof are provided. In this composition, amount of the low molecular weight siloxane component volatilizing from the cured product has been reduced, and as a consequence, this composition is free from the problems such as clouding or haze, contact fault, adhesion failure, and hydrophobicization of the surface caused by the deposition of the volatilized low-molecular weight siloxane component on the surrounding surfaces. More specifically, the addition curing silicone rubber composition comprises; (A) 100 parts by weight of a polyorganosiloxane containing, on average, at least two alkenyl groups which are bonded to silicon atom; (B) 0.3 to 20 parts by weight of an organohydrogenpolysiloxane containing at least two hydrogen atoms which are bonded to silicon atom (SiH functional groups) per molecule; and (C) a catalytic amount of a addition reaction catalyst, and content of the polyorganosiloxane having a degree of polymerization of up to 10 and containing at least one SiH functional group per molecule is up to 0.5% by weight in relation to the entire composition.
摘要:
A rubber composition comprising (A) an alkenyl-containing organopolysiloxane, (B) a silicone resinous copolymer, (C) an organohydrogenpolysiloxane, (D) fumed silica having a BET specific surface area of 50-400 m2/g, (E) carbon powder having a BET specific surface area of 30-150 m2/g, and (F) an addition reaction catalyst cures into a product which is useful as a separator seal in PEFCs. The rubber has a reduced compression set even in an acidic atmosphere or in contact with LLC, and the rubber itself has strength and good adhesion to separator substrates. The separator provides excellent seal performance over a long term.
摘要:
A silicone rubber composition comprising (A) a normally liquid organopolysiloxane having at least two silicon atom-bonded alkenyl radicals, (B) a liquid organohydrogenpolysiloxane having at least two Si—H radicals, (C) a blend of two inorganic powders selected from three highly heat conductive inorganic powders which form 30% slurries at pH at least 8, 6 to less than 8, and less than 6, and (D) an addition reaction catalyst cures into a silicone rubber having a high thermal conductivity and heat resistance and is suited for fixing rolls or belts in copiers.
摘要:
A rubber composition comprising (A) a polyisobutylene polymer having an allyl radical at an end, (B) an optional organpolysiloxane, (C) an organohydrogenpolysiloxane having at least two SiH radicals per molecule, and (D) a platinum group metal catalyst forms a seal member on a periphery of one side of a polymer electrolyte fuel-cell separator. Due to improved acid resistance, weather resistance, creep resistance and gas permeability, the seal member remains effective for a long period of time.
摘要:
A silicone rubber composition comprising (A) a normally liquid organopolysiloxane having at least two silicon atom-bonded alkenyl radicals, (B) a liquid organohydrogenpolysiloxane having at least two Si—H radicals, (C) a blend of two inorganic powders selected from three highly heat conductive inorganic powders which form 30% slurries at pH at least 8, 6 to less than 8, and less than 6, and (D) an addition reaction catalyst cures into a silicone rubber having a high thermal conductivity and heat resistance and is suited for fixing rolls or belts in copiers.
摘要:
A release agent comprising a perfluoroalkyl ether silazane polymer or a perfluoroalkyl or perfluoroalkyl ether silazane/alkylsilazane copolymer and an organic solvent is suitable for use in molds for silicone base rubber molding. The agent offers effective, long-lasting release properties and ease of molding.