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1. Effect of carbon fiber oxidization parameters and sizing deposition levels on the fiber-matrix interfacial shear strength Part A Applied science and manufacturing

Author:
Stojcevski, Filip; Hilditch, Timothy B.; Gengenbach, Thomas R.; Henderson, Luke C.
Source:
Composites 2018 v.114 pp. 212-224
ISSN:
1359-835X
Subject:
carbon fibers; chemical composition; composite materials; electrochemistry; epoxides; moieties; roughness; shear strength
Abstract:
... This paper investigates fifteen fiber types against two epoxy resin systems and the effects of altering electrochemical oxidization conditions and sizing deposition ratio on interfacial shear strength (IFSS). Oxidization current was altered between 0, 2, and 3.4 A while sizing deposition ratio was altered between unsized, 1:10, 1:15 and 1:20 parts sizing to water. Desized fibers were also compared ...
DOI:
10.1016/j.compositesa.2018.08.022

2. Effect of Z-pinning on the impact resistance of composite laminates with different layups Part A Applied science and manufacturing

Author:
Francesconi, L.; Aymerich, F
Source:
Composites 2018 v.114 pp. 136-148
ISSN:
1359-835X
Subject:
carbon; composite materials; delamination; epoxides
Abstract:
... The paper presents the results of an experimental investigation into the effect of Z-pinning on the impact resistance of composite laminates with different multi-directional layups. Unpinned and pinned [02/902]s, [02/±45]s and [0/±45/90]s carbon/epoxy samples were subjected to low-velocity impacts resulting in damage severities ranging from barely visible damage to full laminate penetration. The r ...
DOI:
10.1016/j.compositesa.2018.08.013

3. Enhanced mechanical and dielectric properties of an epoxy resin modified with hydroxyl-terminated polybutadiene Part A Applied science and manufacturing

Author:
Kou, Yujia; Zhou, Wenying; Li, Bo; Dong, Lina; Duan, Yu-E; Hou, Qianwen; Liu, Xiangrong; Cai, Huiwu; Chen, Qingguo; Dang, Zhi-Min
Source:
Composites 2018 v.114 pp. 97-106
ISSN:
1359-835X
Subject:
chemical bonding; composite materials; dielectric properties; epoxides; fatty acids; packaging materials; rubber
Abstract:
... Epoxy (EP) modified with nonpolar rubbers have the potential to achieve a concurrent improvement in mechanical and dielectric properties, when the EP-rubber interface is properly manipulated. Here we investigate rubber toughened EP based on a non-polar hydroxyl terminated polybutadiene (HTPB), and a coupling agent, dimer fatty acid diisocyanate (DDI), in which the rubber is covalently bonded to th ...
DOI:
10.1016/j.compositesa.2018.08.016

4. In situ growth of polyphosphazene particles on molybdenum disulfide nanosheets for flame retardant and friction application Part A Applied science and manufacturing

Author:
Qiu, Shuilai; Hu, Yixin; Shi, Yongqian; Hou, Yanbei; Kan, Yongchun; Chu, Fukai; Sheng, Haibo; Yuen, Richard K.K.; Xing, Weiyi
Source:
Composites 2018 v.114 pp. 407-417
ISSN:
1359-835X
Subject:
active sites; composite materials; epoxides; flame retardants; friction; heat; milling; molybdenum disulfide; nanohybrids; nanoparticles; nanosheets; polymerization; powders; temperature
Abstract:
... Herein, polyphosphazene nanoparticle (PPN) functionalized MoS2 nanosheets have been successfully fabricated through a novel two-step method, involving a simple ball milling of bulk MoS2 powders to acquire exfoliated MoS2 nanolayer, followed by high temperature polymerization to achieve MoS2@PPN nanohybrids. The incorporation of P and N atoms could efficiently reduce the stacking of MoS2 nanolayers ...
DOI:
10.1016/j.compositesa.2018.08.012

5. Temperature effects on the compressive properties and failure mechanisms of composite sandwich panel with Y-shaped cores Part A Applied science and manufacturing

Author:
Zhou, Junmeng; Wang, Yu; Liu, Jiayi; Liu, Jialin; Mei, Jie; Huang, Wei; Tang, Yuling
Source:
Composites 2018 v.114 pp. 72-85
ISSN:
1359-835X
Subject:
ambient temperature; carbon; carbon fibers; composite materials; epoxides; mechanical properties
Abstract:
... The effects of temperature on the mechanical properties and failure mechanisms of composite sandwich panel with Y-shaped cores under out-of-plane compression have been studied in this paper. The carbon fiber composite sandwich panel with Y-shaped cores was manufactured by a hot-press method using unidirectional carbon/epoxy prepregs. The out-of-plane compression tests of composite sandwich panels ...
DOI:
10.1016/j.compositesa.2018.08.003

6. Two-matrix composites: Carbon fiber micropultrusions embedded in flexible epoxy matrices Part A Applied science and manufacturing

Author:
Callens, Sebastien J.P.; Bergsma, Otto K.
Source:
Composites 2018 v.114 pp. 1-12
ISSN:
1359-835X
Subject:
anisotropy; carbon fibers; composite materials; compression strength; crushing; epoxides; manufacturing; tensile strength
Abstract:
... Two-matrix composites combine fibers with two distinct matrices. This is achieved by impregnating fiber bundles with a high-stiffness matrix and embedding the cured bundles in a flexible matrix. Two-matrix composites have been shown to offer unprecedented combinations of transverse flexibility and longitudinal tensile strength, and could offer improved fiber alignment and manufacturability. Here, ...
DOI:
10.1016/j.compositesa.2018.08.008