Novel thermally insulated ultra‐lightweight fireproof and high impact resistance advanced hybrid composite

Abstract

This work investigates the development of ultra-lightweight, hybrid fireproof composite material. The composite panels are made of 2,5-polybenizimidazole (ABPBI) a thermally stable high-performance fiber and poly ether ketone (PEK) a high-performance film. The surface of ABPBI fiber and PEK film were treated by nitrogen plasma to increase the adhesion characteristics. The composite was fabricated through the stacking method. The hybrid composite was developed by sandwiching silicone rubber foam between surface-treated ABPBI/PEK composite. The entire sample was covered with surface-treated ABPBI fiber using silicone adhesive. The hybrid composite was tested in exposure to dry ice, fire and compression tests. After exposure to fire for 10 min, negligible loss of material was noticed. The Scanning Electron Microscopy (SEM) analysis at the interface indicated strong interfacial adhesion between the PEK matrix and the ABPBI fiber. Limiting oxygen index (LOI) of ABPBI fiber and PEK film appear to be promising in terms of fire resistivity and hence the hybrid composite of PEK/ABPBI sandwiched by silicone foam results one of the best fireproof composite. This composite also shows significant improvement of impact and compressive strength. Analysis under Ansys Fluent software also shows similar results.

Experimental investigation of impact resistance and compression behavior of CF/PEEK laminates after hot‐press fusion repair with different stacking sequences

“…In recent years, carbon fiber-reinforced polymer composites have been widely used in aerospace and vehicle industries. [1][2][3][4][5] With the development of high-performance composites, the application of aircraft structures has been developed from secondary load-bearing structures to primary ones, such as wing fixed leading edges, ribs, clips, and angled profiles in parts of Airbus and Boeing commercial aircraft. 6 Due to the service environment, low-velocity impact (LVI) damage is inevitable for thin composite laminated structures.…”

Application of Box Behnken experimental design to analyze the influence mechanism of process parameters on mechanical properties of high-performance thermoplastic composites

“…[26][27][28][29] However, the research primarily focusses on: PEEK as the matrix, [30][31][32][33][34][35] hybrid yarns [30][31][32] or unidirectional CF/PEEK prepegs 33 as raw materials. There is limited studies on: PEK as the matrix component of the high performance composites, [36][37][38][39] in depth systematic analysis on the internal influence mechanisms of high performance composites fabricated through film fiber stacking and consolidation 5,40 and optimization of the properties of the same by statistical analysis. 33,41,42 There are no available studies exploring the effect of process parameters on the mechanism of internal influence of PEK based high performance composites and optimization of the subsequent film fiber stacking and consolidation process parameters.…”

Curved woven lattice truss sandwich panels strengthened by foams: Designing, manufacturing, and testing

“…Foam is characterized by light weight, good energy absorption, and excellent impact resistance. [17][18][19] Epoxy foam-filled threedimensional woven spacer fiberglass/epoxy composites exhibit higher flexural strength and excellent bending stiffness compared to unfilled. 20 Foam filling can effectively increase the peak load, average load, crushing rate efficiency and overall energy absorption of the structure, but the increase in mass will lead to a decrease in the specific energy absorption.…”

“…Therefore, a lightweight material is needed to reinforce, the foam is a better choice. Foam is characterized by light weight, good energy absorption, and excellent impact resistance 17–19 . Epoxy foam‐filled three‐dimensional woven spacer fiberglass/epoxy composites exhibit higher flexural strength and excellent bending stiffness compared to unfilled 20 .…”