Carbon Fiber Reinforced Thermoplastics Molding by Using Direct Resistance Heating to Carbon Nanofilaments Grafted Carbon Fiber

Fiber–fiber interactions in carbon mat thermoplastics

Carbon mat thermoplastics (CMT) consisting of 12.7 mm long, chopped carbon fibers in a polypropylene matrix were manufactured using the wetlay technique at fiber volume fractions (FVF) from 10% to 25%, and tests simulating the compression molding process were conducted. The packing stress of the CMT followed a power law relation with FVF. A single fiber pull-out fixture was used to measure the ...

Carbon Fiber Reinforced Bismaleimide Composites

Bismaleimide (BMI) resins are developed very rapidly due to the demands of the defense and aerospace industries. They are cross-linked polymers which process like epoxy resins but have an upper use temperature of 230°C, compared to the epoxy upper use temperature of 175°C. Also due to the available intrinsic properties of BMI resins such as higher thermal stability and lower toxicity than those...

Damage Detection of Carbon Fiber-reinforced Concrete Under Bending Test

Controlled Resistive Heating of Carbon Fiber Composites

Temperature control is the key to effective resistive heating for composite rigidization. The ability to monitor and even control the temperature provides an active control strategy in prescribing and predicting the stiffness of the hardened composite. Further, understanding how the material responds to an electrical input determines both the type of control to be used as well as the level of c...

Carbon fiber reinforced cement improved by using silane-treated carbon fibers

The tensile strength of cement paste was increased by 56% and the modulus and ductility were increased by 39% by using silane-treated carbon fibers and silane-treated silica fume, relative to the values for cement paste with as-received carbon fibers and as-received silica fume. Silane treatment of fibers and silica fume contributed about equally to the strengthening. Silane treatment of fibers...