Composite material and process for production of same
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsMinoru Yoshida, Shinichi Okajima, Minoru Fukui
Life of this patent
Estimating the term…
Abstract
A sheet-like composite material which is obtained by coating or impregnating a fibrous base material with an elastic polymeric substance, in which the fibers constituting the fibrous base material and the elastic polymeric substance are prevented from bonding with each other, and which is extremely flexible and has excellent wear resistance and an extremely high peel strength, which material may be produced for example by applying a hydrophobicizing treatment to the fibrous base material, then impregnating or coating a solution of the elastic polymeric substance to which a hydrophilic silicone has been added, and wet solidifying.
Claims9
A composite material sheet comprising:
- a substrate material made of layers of fibers, an elastic polymeric a substance coating on said substrate and not bonded with a number of fibers, and an interface between the substrate and the elastic polymeric substance, wherein:
- (i) fibers at the interface are surrounded by, and spaced from said elastic polymeric substance so as to not be bonded with the elastic polymeric substance;
- and
- (ii) the number of fibers not bonded with the elastic polymeric substance, Nn, divided by a total number of fibers at the interface, Nt, results in a calculated ratio of Nn/Nt equal to 0.3 to 1.
A composite material sheet comprising:
- an elastic polymeric substance;
- and
- a substrate made of a total number of fibers and having an interior portion and at least one surface portion, said substrate impregnated with said elastic polymeric substance such that a number of said fibers are surrounded by, and spaced from said elastic polymeric substance so as to not be bonded with said elastic polymeric substance, wherein:
- (i) the number of fibers not bonded with the elastic polymeric substance, Nn, divided by the total number of fibers in the substrate, Nt, results in a calculated ratio of Nn/Nt equal to 0.3 to 1;
- and
- (ii) the interior portion of the substrate is impregnated to a greater extent than the at least one surface portion of the substrate.
Dependencies are inferred from the claim text.