Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Composición de caucho de silicona
Una composición de caucho de silicona que comprende (A) 100 partes en peso de un organopolisiloxano que tenga un grado de polimerización de al menos 100 y que contenga al menos dos grupos alquenilo unidos a silicio en la molécula, (B) 10 a 100 partes en peso de sílice de refuerzo con una superficie específica (procedimiento BET) de al menos 50 m2/g, (C) 1 a 100 partes en peso de mica calcinada con un tamaño medio de partícula de hasta 20 mm, y (D) un agente de cura en una cantidad eficaz para curar la composición de caucho de silicona.
The present invention relates to a silicone rubber composition comprising: (A) 100 parts by mass of an organopolysiloxane that has a degree of polymerization of 100 or more and contains at least two alkenyl groups each bound to a silicon atom in the molecule; (B) 10 to 100 parts by mass of a reinforcing silica having a specific surface area (BET method) of 50 m 2 /g or more; (C) 1 to 100 parts by mass of calcined mica having an average particle diameter of 20 µm or less; and (D) an effective amount of a curing agent. According to the present invention, even when a silicone rubber molded article is exposed to flame for a long time, ash of the silicone rubber molded article after firing is sintered (is transformed into a ceramic material) and the shape of the silicone rubber molded article before the firing (sintering) can be maintained. In addition, the rolling properties (workability) in a kneading step in the production of the silicone rubber composition is excellent.
Composición de caucho de silicona
Una composición de caucho de silicona que comprende (A) 100 partes en peso de un organopolisiloxano que tenga un grado de polimerización de al menos 100 y que contenga al menos dos grupos alquenilo unidos a silicio en la molécula, (B) 10 a 100 partes en peso de sílice de refuerzo con una superficie específica (procedimiento BET) de al menos 50 m2/g, (C) 1 a 100 partes en peso de mica calcinada con un tamaño medio de partícula de hasta 20 mm, y (D) un agente de cura en una cantidad eficaz para curar la composición de caucho de silicona.
The present invention relates to a silicone rubber composition comprising: (A) 100 parts by mass of an organopolysiloxane that has a degree of polymerization of 100 or more and contains at least two alkenyl groups each bound to a silicon atom in the molecule; (B) 10 to 100 parts by mass of a reinforcing silica having a specific surface area (BET method) of 50 m 2 /g or more; (C) 1 to 100 parts by mass of calcined mica having an average particle diameter of 20 µm or less; and (D) an effective amount of a curing agent. According to the present invention, even when a silicone rubber molded article is exposed to flame for a long time, ash of the silicone rubber molded article after firing is sintered (is transformed into a ceramic material) and the shape of the silicone rubber molded article before the firing (sintering) can be maintained. In addition, the rolling properties (workability) in a kneading step in the production of the silicone rubber composition is excellent.
Composición de caucho de silicona
HAYASHIDA OSAMU (Autor:in) / HOTTA MASAKATSU (Autor:in) / KOIKE YOSHIAKI (Autor:in) / KASHIMA ATSUHITO (Autor:in)
21.04.2021
Patent
Elektronische Ressource
Spanisch
IPC:
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C09D
Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke
,
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
F16J
Kolben
,
PISTONS
Composición de betún que comprende un material de caucho de desecho degradado
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2019