Title:
FLEXIBLE FIRE-RESISTANT MATERIAL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP2798231
Kind Code:
B2
Abstract:
PURPOSE: To obtain a flexible fire-resistant material suitable for a fire-resistant gasket for buildings by incorporating a specified amount of carbon fibers cut to a specified length into a specified flame-retardant composite rubber-base raw material and molding the mixture.
CONSTITUTION: A composite rubber-base raw material having a flame retardancy near to the UL standard V-0 (a raw material obtained by imparting flame retardancy to a base material comprising, e.g. a synthetic rubber, a silicone rubber or fluororubber or a composite thereof) is mixed with 2-40wt.% assembly of carbon fibers chopped to 20mm or shorter, and the mixture is molded. An example of the carbon fiber assembly is one obtained by cutting long PAN-base carbon fibers having a diameter of 3-10μm to a length of 2-20mm. Necessary ingredients, such as a foaming material, a vulcanizing agent, a stabilizing agent and a coloring agent, are incorporated into the molding mixture as required.
Inventors:
Naonobu Kumagai
Application Number:
JP28394193A
Publication Date:
September 17, 1998
Filing Date:
October 19, 1993
Export Citation:
Assignee:
Iwaki Kasei Co., Ltd.
International Classes:
E04B1/684; C08J5/04; E04B1/94; (IPC1-7): E04B1/684; C08J5/04; E04B1/94
Domestic Patent References:
| JP548251A | ||||
| JP6345967A |
Attorney, Agent or Firm:
Yoshihisa Nishi