Fire‐retardant carbon/glass fabric‐reinforced epoxy sandwich composites for structural applications

2020 ◽  
Author(s):  
Atif Javaid ◽  
Hafiz Tanveer Ashraf ◽  
Muhammad Mustaghees ◽  
Arslan Khalid
Keyword(s):  
Fire Retardant ◽  
Glass Fabric ◽  
Sandwich Composites ◽  
Structural Applications

scholarly journals Innovation in Aircraft Cabin Interior Panels. Part II: Technical Assessment on Replacing Glass Fiber with Thermoplastic Polymers and Panels Fabricated Using Vacuum Forming Process

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3258
Author(s):  
Edgar Adrián Franco-Urquiza ◽  
Perla Itzel Alcántara Llanas ◽  
Victoria Rentería-Rodríguez ◽  
Raúl Samir Saleme ◽  
Rodrigo Ramírez Aguilar ◽  
...  
Keyword(s):  
Polyurethane Foams ◽  
Future Research ◽  
Sandwich Composites ◽  
Thermoplastic Polymers ◽  
Forming Process ◽  
Molding Process ◽  
Aircraft Cabin ◽  
Vacuum Forming ◽  
Structural Applications ◽  
Cabin Interior

The manufacturing process of the aircraft cabin interior panels is expensive and time-consuming, and the resulting panel requires rework due to damages that occurred during their fabrication. The aircraft interior panels must meet structural requirements; hence sandwich composites of a honeycomb core covered with two layers of pre-impregnated fiberglass skin are used. Flat sandwich composites are transformed into panels with complex shapes or geometries using the compression molding process, leading to advanced manufacturing challenges. Some aircraft interior panels are required for non-structural applications; hence sandwich composites can be substituted by cheaper alternative materials and transformed using disruptive manufacturing techniques. This paper evaluates the feasibility of replacing the honeycomb and fiberglass skin layers core with rigid polyurethane foams and thermoplastic polymers. The results show that the structural composites have higher mechanical performances than the proposed sandwich composites, but they are compatible with non-structural applications. Sandwich composite fabrication using the vacuum forming process is feasible for developing non-structural panels. This manufacturing technique is fast, easy, economical, and ecological as it uses recyclable materials. The vacuum forming also covers the entire panel, thus eliminating tapestries, paints, or finishes to the aircraft interior panels. The conclusion of the article describes the focus of future research.

Development of the fire retardant glass fabric/carbonized phenolic composite

2016 ◽  
Vol 148 ◽  
pp. 191-197 ◽  
Author(s):  
Minkook Kim ◽  
Jaeheon Choe ◽  
Dai Gil Lee
Keyword(s):  
Fire Retardant ◽  
Glass Fabric ◽  
Phenolic Composite

Mechanical and thermal properties of PVC and polyurethane foam hybrid composites

2020 ◽  
Vol 62 (5) ◽  
pp. 544-552
Author(s):  
B. Vijaya Ramnath ◽  
A. Kesavan ◽  
E. Chinnadurai
Keyword(s):  
Hybrid Composites ◽  
Thermo Gravimetric Analysis ◽  
Research Work ◽  
Mechanical Tests ◽  
Mechanical And Thermal Properties ◽  
Gravimetric Analysis ◽  
Sandwich Composites ◽  
Double Shear ◽  
Hardness Tests ◽  
Structural Applications

Abstract Sandwich foam composites are mostly used today in structural applications in aerospace and automobile industries due to light weight and high stiffness of the sandwich composites. In this research work, the composites were fabricated by using polyurethane and PVC foam and carbon fiber as skin. Sandwich composites were fabricated by the hand lay-up method. Mechanical tests such as tensile, flexural, impact, double shear, inter delamination and hardness tests were conducted. A thermo gravimetric analysis (TGA) test was also performed for the analysis of the temperature characteristics of the sandwich composites. The internal structures of tested samples were analyzed through a scanning electron microscope (SEM). The results show that the tensile, flexural, impact, thermal and inter delamination strengths of PVC foam composites are superior to those of other composites.

Thermal stability and flammability characteristics of phenolic syntactic foam core sandwich composites

2020 ◽  
pp. 109963622092666
Author(s):  
SJ Amith Kumar ◽  
SJAjith Kumar ◽  
Bharath K Nagaraja
Keyword(s):  
Thermal Stability ◽  
Composite Structures ◽  
Syntactic Foam ◽  
Spherical Particles ◽  
Core Material ◽  
Foam Core ◽  
Sandwich Composites ◽  
Minimum Concentration ◽  
Polymeric Foam ◽  
Structural Applications

Polymeric foam core sandwich composites are the nascent materials used in marine and aerospace structural applications for its low-density characteristics. A special class of foam called syntactic foam is one of the promising core material having high specific properties. However, these polymeric foam core sandwich composite structures may encounter problems in correlation with temperature and fire. Damages that happen due to the variation in temperature and by the catch of fire are sometimes imperceptible which may lead to the deterioration of load carrying ability or catastrophic failure of these composite structures. Present investigation is focused on the possibilities of reducing the extent of damages due to variation in temperature and by the catch of fire by enhancing its thermal stability and flame resistance characteristics. This was achieved from the development of syntactic foam by embedding hollow micro-spherical particles in phenolic resin for fire containment or fire isolation. Result of the experimentation reveals that the phenolic syntactic foam core was thermally more stable than glass/epoxy face skins up to a temperature of 450°C. The minimum concentration of oxygen required for burning was found to be 30%, in which phenolic syntactic foam core helps in flame isolation, whereas E-glass/epoxy face skins contribute to flame spread in the event of burning of sandwich composites. Improved thermal stability and fire resistance characteristics of developed sandwich composites are attributed to the phenolic syntactic foam core and by its orientation.

Bending and compression of glass fabric-corrugated paper–epoxy sandwich composites

2020 ◽  
Vol 34 (07n09) ◽  
pp. 2040003
Author(s):  
Jieng-Chiang Chen ◽  
Xiu-Zhi Yang
Keyword(s):  
Bending Strength ◽  
Core Layer ◽  
Test System ◽  
Glass Fabric ◽  
Sandwich Composite ◽  
Sandwich Composites ◽  
The Core ◽  
Compression Properties ◽  
Composite Glass ◽  
Corrugated Paper

The manufacturing procedures of sandwich composites containing corrugated paper (CP) as a core layer and covered with glass fabrics are discussed herein. The core layer of the sandwich composite was fabricated with CP-reinforced epoxy (E) resin and then stacked with glass fabric on the top and bottom surfaces to fabricate the sandwich composites. Three composites [a CP-reinforced E (CP/E) composite, glass fiber nonwoven mat (GN) sandwich composite with a CP core layer (GN/E/CP) and glass mesh fabric (GM) sandwich composite with a CP core layer (GM/E/CP)] were developed in this study. The bending and compression properties of these sandwich composites were measured on a materials test system. Experimental results revealed that the bending strength of the GN/E/CP sandwich composite was approximately 45% and 150% higher than those of the GM/E/CP and CP/E sandwich composites, respectively.

scholarly journals Analogy of Isophthalic Polyester Based Bamboo Fabric Mat and E-glass Reinforced Composite

2020 ◽  
Vol 10 (1) ◽  
pp. 74-80
Keyword(s):  
Mechanical Properties ◽  
Negative Impact ◽  
Absorption Capacity ◽  
Glass Fabric ◽  
Water Repellent ◽  
Reinforced Composites ◽  
Moulding Process ◽  
Reinforced Composite ◽  
Fabric Composite ◽  
Structural Applications

Bamboo (Bambusoideae) normally found abundant in South Asian region is known to have a better fabric property which is now researched as a natural alternative in various applications and field. Various research are being carried out to find a suitable replacement for the non-bio degradable plastic reinforced composites, which has a negative impact on the Environment. A similar attempt is made to present an overview of recent research efforts addressing the properties of isophthalic polyester based Bamboo fabric mat as a replacement for E-glass fabric. The Bamboo fabric is made water repellent and the properties are promoted through mercerization process. The mercerization process is done using 8% of sodium in water to form the sodium hydroxide (NaOH). The property of the fabric is further promoted by adding charcoal, during the hand moulding process. The composite material is developed with the help of isophthalic polyester resin with 2% of accelerator and hardener used along with it. Experiments are carried out as per ASTM standards to find the mechanical properties namely, tensile strength and modulus, flexural strength and modulus, and impact strength. In addition to mechanical properties, water absorption capacity and the rate of burning of the composites is also studied. Further, fractured surface of the specimen is subjected to morphological study using scanning electron microscope. With help of the research and study, it can be found whether the isophthalic resin-based bamboo fabric mat can be used as an alternate for E-Glass fabric composite in various applications such as automobile and structural applications.

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