Resistance heating forming process based on carbon fiber veil for continuous glass fiber reinforced polypropylene

Abstract

This paper successfully developed a resistance heating method based on carbon fiber thin veil for molding continuous glass fiber reinforced polypropylene composite. Electrical resistance, temperature distribution, and heating response of carbon fiber veil were investigated to evaluate its resistance heating behavior. One layer of carbon fiber veil with about 0.1 mm thickness was sandwiched by prepreg stacks with about 2 mm thickness and composite plate was fabricated through resistance heating and forming process. Void content, glass fiber distribution, and thickness of composite plate were obtained to evaluate forming quality. Flexural test was employed for mechanical assessment. The results shows that carbon fiber veil coupled with copper foil is an effective heating element with uniform temperature distribution and quick heating response, and the processing quality of composite plate is comparable to that using oven heating process. The feasibility of secondary resistance heating of composite plate based on carbon fiber veil was also demonstrated and the results indicate that composite plate containing carbon fiber veil can be molded into composite product using resistance self-heating process.

Flexible Potentiometric Sensor System for Non-Invasive Determination of Antioxidant Activity of Human Skin: Application for Evaluating the Effectiveness of Phytocosmetic Products

“…The three-electrode FPSS configuration was attached to the selected area of the skin (inside hand from the palm to the elbow) in such a way that the impregnated [Fe(CN) 6 ] 3-/4membrane was in contact with the skin surface, and FFEs were in contact with the membrane. The FPSS was fixed on the selected area of the arm with the help of a sphygmomanometer cuff, which was inflated to low pressure (35)(36)(37)(38)(39)(40). This pressure was maintained during the entire measurement (10 min).…”

“…Since the CV displays such features as electrical conductivity, softness, and flexibility, it is these features that explain the CV popularity in applied electrochemistry. The CV can be used for manufacturing electrodes for batteries [36], capacitors [37], microbial fuel cells [38], and generator cells [39]; heating elements [40]; and sensors for the determination of ascorbic acid [41] and nitrite ions [42]. The analysis of Web of Science and Scopus publications has not revealed any case reporting the use of CV for monitoring the AOA of biological objects.…”

Self‐resistance heating forming and performance analysis of Al/PEEK/CFRP laminates

“…[9,10] In recent years, thermoplastic fiber metal laminates (TP-FMLs) have been developed to overcome the shortcomings of thermosetting FMLs. They provide properties of high modulus, high toughness, a nocured chemical reaction, short forming time and reprocessability, [11][12][13][14] and are thus suitable for rapid prototyping of large-scale structural and complex parts by stamping, deep drawing, and other processes. [15][16][17] However, the high molding temperature of TP-FMLs leads to long heating and thermoforming cycles, large thermal inertia, and large energy consumption during heating.…”

Electrochemical Sensor Based on a Carbon Veil Modified by Phytosynthesized Gold Nanoparticles for Determination of Ascorbic Acid

“…A promising material for application in electrochemical sensors is a flexible electrically conductive carbon veil, with a developed surface. The carbon veil is used in capacitors [28], batteries [29][30][31], corrosion barriers [32] and as an electrothermal material [33,34]. Only a few examples of carbon veil use in electrochemical sensors are known, e.g., for the determination of nitrite ions [35,36], dopamine [37], adenosine-tri-phosphate [38], trace amounts of silver [39].…”