摘要:
A conductive silicone rubber composition is provided, which includes (a) 100 parts by weight of an organopolysiloxane represented by an average composition formula of RaSiO(4−a)/2 wherein R is an unsubstituted or substituted monovalent hydrocarbon group which may be the same or different, and a is a positive number of 1.90 to 2.05, (b) 50 to 500 parts by weight of conductive particles comprising carbon coated with Ni, and (c) 0.1 to 10 parts by weight of an organic peroxide. This composition has an adequate pot life, is unlikely to be affected by catalyst poisoning, and is suitable for normal pressure hot air vulcanization. Cured products produced from the composition has a low volume resistivity and excellent electromagnetic interference sealing properties.
摘要:
A silicone rubber is prepared from a silicone rubber compound comprising (A) an organopolysiloxane having an average degree of polymerization of at least 100, (B) a reinforcing silica filler, and (C) an organohydrogenpolysiloxane by mixing component (C) with components (A) and (B) and heating them at a temperature of at least 100.degree. C. to form the silicone rubber compound, adding an organic peroxide or a platinum group metal catalyst to the compound, and crosslinking the compound. The silicone rubber exhibits a minimal difference in physical properties between primary vulcanization and secondary vulcanization.
摘要:
Disclosed is a millable type silicone rubber composition including as an essential components: (A) 100 parts by weight of an organopolysiloxane represented by the following average compositional formula (I) and having a polymerization degree of at least 100; R1aSiO(4-a)/2 (I) wherein R1 are, identical or different, unsubstituted or substituted monovalent hydrocarbon groups, and a is a positive number of 1.95 to 2.05; (B) 70 to 150 parts by weight of fumed silica having a specific surface area of more than 200 m2/g; (C) 0.1 to 30 parts by weight of an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to silicon atoms in one molecule; and (D) 0.1 to 10 parts by weight of a hydrosilylation reaction catalyst.
摘要:
The invention relates to the use of a precipitated silica, pretreated by at least one organosilane hydrophobic compound or one hydrophobic silicone oil, as a reinforcing filler for silicone elastomer, the pretreated silica being incorporated in the silicone elastomer by cold mixing and having the following features: —a BET specific surface ranging from 50 to 450 m2/g, —a water wettability lower than 80, —a sulfur content lower than 0.1% by weight. The invention is directed to the curable silicone elastomer composition thus obtained.
摘要:
A silicone rubber composition comprising (A) 100 parts by weight of an organopolysiloxane having a degree of polymerization of 100 or higher and having at least two silicon-bonded alkenyl groups in the molecule; (B) from 3 to 100 parts by weight of a wet silica having the following properties: specific surface area (the BET method) of 50 m2/g or larger, specific surface area (the BET method)/specific surface area (the CTAB method) of from 1.0 to 1.3, and water content of 4% or lower; and (C) an effective amount of a curing agent. The silicone rubber composition can be obtained without foaming even in hot air vulcanization and even if wet silica is used therein, and the silicone rubber composition gives a silicone rubber excellent in electrical properties such as electrical insulating properties.
摘要:
The present invention relates to a solar cell module which is characterized in that: a light-transmitting elastomer member and a solar cell element are arranged in a space between a panel of a transparent member upon which sunlight is incident and a panel of a thermally conductive member which is arranged on the side opposite to the sunlight incidence side in such a manner that the light-transmitting elastomer member is closer to the sunlight incidence side; and the solar cell element is pressed by the light-transmitting elastomer member toward the panel of a thermally conductive member so that the solar cell element is compression bonded thereto. This solar cell module is most suitable as a solar cell module that has excellent heat dissipation of a cell, the temperature of which is increased due to sunlight or a hot spot, and a structure that suppresses the production cost.
摘要:
Disclosed is a minable type silicone rubber composition including as an essential components:(A) 100 parts by weight of an organopolysiloxane represented by the following average compositional formula (I) and having a polymerization degree of at least 100; R1aSiO(4-a)/2 (I) wherein R1 are, identical or different, unsubstituted or substituted monovalent hydrocarbon groups, and a is a positive number of 1.95 to 2.05;(B) 70 to 150 parts by weight of fumed silica having a specific surface area of more than 200 m2/g;(C) 0.1 to 30 parts by weight of an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to silicon atoms in one molecule; and(D) 0.1 to 10 parts by weight of a hydrosilylation reaction catalyst.
摘要:
A card connector of the present invention includes: a housing; a card insertion opening formed by opening at least one end of the housing; and a plurality of contacts arranged in the housing; wherein switching mechanism constructed of at least actuator members and a shutter member is provided in the housing. This construction allows a plurality of kinds of cards of different sizes in thickness and width to be used on one and the same card connector without requiring the cards to have any additional member, by performing a switching operation on such members as shutter, actuators and latch arms. This construction can make a distinction between appropriate and inappropriate cards for use on the card connector by permitting the insertion of appropriate cards and blocking the insertion of inappropriate cards.
摘要:
A mounting structure of a card connector includes a connector body surface mounted on a wiring circuit board. An IC card can be withdrawably inserted into the connector body so that the IC card can be connected to the wiring circuit board through the connector body. The connector body includes a card insertion space which is disposed at an angle of inclination with respect to an upper surface of the wiring circuit board. A card inlet/outlet port is formed at an upper inclination end of the card insertion space such that the IC card inserted into the card insertion space through the card inlet/outlet port is retained for connection at an angle of inclination.
摘要:
An organopolysiloxane gum is prepared by polymerizing a cyclic organopolysiloxane with a low molecular weight linear organopolysiloxane end-blocked with a triorganosilyl group in the presence of a thermally decomposable catalyst. After the polymerization reaction, the catalyst is deactivated by heating the reaction product under a subatmospheric pressure of typically up to 500 mmHg.