Preparation of carbon fiber-reinforced thermoplastics with high fiber volume fraction and high heat-resistant properties

Abstract

In the present article, a highly heat-resistant composite with a high fiber volume fraction ( Vf > 60%) was successfully manufactured using engineering plastic Nylon66 as matrix and carbon fabric as reinforcement by a solution impregnation molding method. The mechanical properties of the composite were investigated using a tensile measuring device. Mechanical analysis revealed the superior mechanical properties of the composite relative to those of previously reported carbon fiber-reinforced thermoplastics (CFRTPs). The cross section and fracture surface of the composite were characterized by scanning electron microscopy. The resin successfully impregnated the fiber bundles and the bonding strength of the fiber–resin interface was excellent. Dynamic mechanical analysis was used to evaluate the heat-resistant property of the composite. The composite exhibited a better heat-resistant property relative to that of the carbon fiber-reinforced crystalline co-polyester composite. To further verify the versatility of this method, super engineering plastic polyetherimide with a higher molecular weight was successfully employed as matrix to prepare CFRTP.

Investigation of the recycling of continuous fiber-reinforced thermoplastics

“…A new method—solution impregnation—has been proposed by our laboratory; FRTPs with high fiber volume fractions have been prepared successfully using this method. 3…”

“…As discussed in our previous work, 3 thermoplastics can easily be dissolved in organic solvents to obtain a resin solution with low viscosity. Therefore, a solvent recycling technique was used to recycle the FRTPs in the present work.…”

The Effect of the Melt Viscosity and Impregnation of a Film on the Mechanical Properties of Thermoplastic Composites

“…Fiber-reinforced thermoplastic (FRTP) composites have been applied widely to many industries owing to their advantages, such as fracture toughness, damage tolerance, ease of shape-forming before consolidation, significantly faster manufacturing, longer shelf life of raw materials, and the ability to be reshaped and reused [ 4 ]. On the other hand, the largest problem of thermoplastic composites is that the resin can barely penetrate the fiber bundles because of its high viscosity (500–5000 Pa·s) at melting temperatures when compared with that of thermosetting resins (commonly < 100 Pa·s) [ 5 ]. Many manufacturing processes for thermoplastic composites have been developed to solve the problem, and the use of a prepreg is the most common way to manufacture them [ 6 , 7 , 8 , 9 ].…”

Carbon/Polyamide 12 Prepreg Production

“…Karbon/PPS film kompozit üretimi ile ilgili, fitilin iyice yayılmasının sağlandığı bir çalışmada ise kalınlığın 0,05 mm civarına indiği belirtilmiştir [12]. Karbon/Nylon66 ve karbon/PEI termoplastik film kompozit üretiminin elle yapıldığı bir çalışmada ise kalınlık değerinin 0,2 mm civarında olduğu görülmüştür [13].…”