CFRP plate material and method for preparation thereof
AssigneeToray Industries, Inc.
InventorsShoji Murai, Tomoyuki Shinoda, Takehiko Hirabara, Akihiko Kitano
Life of this patent
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Abstract
A light-weight, highly rigid, high-strength environment-friendly fiber-reinforced plastic (hereinafter, CFRP) board having a surface quality that can endure long-term use suitable for use in automobiles and the like is provided. A method for making the same is also provided. The CFRP board includes a board member formed from a woven fabric as a reinforcing base material, the woven fabric including carbon fibers; and at least one of a gel coat and a paint provided on the board member, wherein the NSIC value of the surface of the CFRP board is 30% or more.
Claims12
A CFRP board made by an RTM method comprising:
- a carbon fiber reinforced plastic member (CFRP) comprising a woven fabric as a reinforcing base material, the woven fabric comprising carbon fibers, wherein the ratio (W/t) of the weight (Wg/m2) to the thickness (tmm) of the carbon fiber woven fabric is within the range of 700 to 1,700, and resin having a viscosity prior to hardening of 300 mPa·s or less and a hardening shrinkage of 3% or less;
- and
- at least one of a gel coat and a paint provided on the member, wherein the A-value of a surface of the CFRP board is 30% or more.
An RTM method for making a CFRP board comprising:
- impregnating a woven fabric comprising carbon fibers with resin having a viscosity prior to hardening of 300 mPa·s or less and a hardening shrinkage of 3% or less;
- causing the resin to harden and form a board member comprising CFRP;
- and
- applying at least one of a gel coat or a paint on the board member, wherein the A-value of a surface of the CFRP board is 30% or more.
Dependencies are inferred from the claim text.