Patent ID: 11904591
Assignee: nan
Field: Surface technology, coating (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A composite material for footwear comprising a first carbon fiber layer, a second carbon fiber layer, and an intermediate layer; wherein
the first carbon fiber layer is a first carbon fiber cloth impregnated with a first resin, in which the first carbon fiber cloth comprises carbon fibers;
the second carbon fiber layer is a second carbon fiber cloth impregnated with a second resin, in which the second carbon fiber cloth comprises carbon fibers, and the second carbon fiber layer is disposed above the first carbon fiber layer;
the intermediate layer is a liquid crystal polymer fiber cloth impregnated with a third resin, in which the liquid crystal polymer fiber cloth comprises liquid crystal polymer fibers; and
the intermediate layer is disposed between the first carbon fiber layer and the second carbon fiber layer;
wherein the first resin and the second resin independently comprise a polysulfone resin, a polyphenylene sulfone resin, or any combination thereof, and the first resin is in an amount of 38 percent by weight to 55 percent by weight based on the total weight of the first carbon fiber layer, and the second resin is in an amount of 38 percent by weight to 55 percent by weight based on the total weight of the second carbon fiber layer;
when the composite material is subjected to flexing test in accordance with the method of ISO5423, cracking occurs after about 300,000 or more cycles of flexing; and
the intermediate layer further comprises aramid fibers, in which the amount of the aramid fibers is equal to or less than the amount of the liquid crystal polymer fibers.