Supercritical CO2-induced nondestructive coordination between ZnO nanoparticles and aramid fiber with highly improved interfacial-adhesion properties and UV resistance

2020 ◽  
Vol 521 ◽  
pp. 146430 ◽  
Author(s):  
Luwei Zhang ◽  
Haijuan Kong ◽  
Mengmeng Qiao ◽  
Xiaoma Ding ◽  
Muhuo Yu
Keyword(s):  
Zno Nanoparticles ◽  
Supercritical Co2 ◽  
Interfacial Adhesion ◽  
Aramid Fiber ◽  
Uv Resistance ◽  
Adhesion Properties

Non-destructive modification of aramid fiber by building nanoscale-coating solution to enhance the interfacial adhesion properties of the fiber-reinforced composites

2020 ◽  
pp. 002199832096284
Author(s):  
Ting Li ◽  
Zengxiao Wang ◽  
Hao Zhang ◽  
Zuming Hu ◽  
Junrong Yu ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Sodium Hydride ◽  
Aramid Fiber ◽  
Amide Bond ◽  
Reinforced Composites ◽  
Adhesion Properties ◽  
Coating Solution ◽  
Grafting Reaction ◽  
Nanoscale Coating ◽  
Non Destructive

The poor interfacial adhesion between the aramid fiber (AF) and the matrix limits the application of the final composites. In this study, a novel coating method was adopted to modify AF Through metallization/grafting reaction, the copolymer synthesized by the low-temperature poly-condensation of p-phenylenediamine (PPDA), 4,4′-diaminodiphenyl ether (ODA) and terephthaloyl dichloride (TPC), was added into the dimethyl sulfoxide/sodium hydride (DMSO/NaH) solution, and a nano AF solution was obtained. Then epoxy groups were introduced to the amide bond by grafting Epichlorohydrin (ECH). By further grafting on Poly (propylene glycol) bis (2-aminopropyl ether) (PEA), more functional groups were introduced, which could increase the polarity of the fiber and the interfacial adhesion of the composites. The results show that not only the interfacial shear strength (IFSS) and the flexural strength of the aramid-reinforced composites has a significant increase compared with the untreated fibers, but the modification still maintains the mechanical properties of the fiber, indicating that building nanoscale coating solution is a very effective method to achieve non-destructive modification to ehance its interfacial adhesion with epoxy resin.

Sulfone-functionalized poly(p-phenylene terephthalamide) copolymer fibers with improved interfacial adhesion to epoxy matrices

2021 ◽  
pp. 095400832110089
Author(s):  
Ting Li ◽  
Zengxiao Wang ◽  
Hao Zhang ◽  
Yutong Cao ◽  
Zuming Hu ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Interfacial Shear Strength ◽  
Aramid Fiber ◽  
Fiber Reinforced Composites ◽  
Epoxy Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Regular Arrangement ◽  
Epoxy Matrices ◽  
Polymerization Conditions

The poor interfacial adhesion of aramid fiber and matrix limits the application of the final composites. In this study, a series of the sulfone-functionalized poly( p-phenylene terephthalamide) (SPPTA) copolymers were satisfactorily synthesized and the effects of polymerization conditions (contents of the additional monomer and the cosolvent LiCl, molar concentration and ratio of the monomer, reaction temperature and time) on the molecular weight of the copolymer were discussed. The introduction of the sulfone group in aromatic polyamides not only increased the polarity of poly( p-phenylene terephthalamide) (PPTA) but destroyed the regular arrangement of the molecular chains, which greatly improved the surface free energy and the solubility of the polymers in organic solvents. The polymer maintained excellent thermal and interfacial properties. Compared with the PPTA fiber/epoxy composites, the interfacial shear strength (IFSS) of SPPTA fiber-reinforced epoxy composites reached 43.5 MPa, with a significantly enhancement of 20.8%, implying that the study provided an effective method to achieve highly interfacial adhesion of aramid fiber-reinforced composites.

Evaluation of interfacial properties of the silane blend sized glass fiber–epoxy composite by the microdroplet test

2016 ◽  
Vol 51 (11) ◽  
pp. 1573-1581 ◽  
Author(s):  
Somayeh Safi ◽  
Ali Zadhoush ◽  
Mahmood Masoomi
Keyword(s):  
Glass Fiber ◽  
Epoxy Matrix ◽  
Interfacial Adhesion ◽  
Matrix Material ◽  
Interfacial Properties ◽  
Material System ◽  
Critical Energy Release Rate ◽  
Adhesion Properties ◽  
The Impact ◽  
Scanning Electron

The performance of a composite material system depends critically on the interfacial characteristics of the reinforcement and the matrix material. In this study, the interfacial adhesion was tailored by the creation of textures on the glass fiber surface using inorganic-organic silane blends. A single-fiber microdroplet test was conducted to assess the interfacial properties between the textured glass surface and an epoxy matrix. The load–displacement curves from microdroplet tests were analyzed. The stress-based and energy-based micromechanic models of interfacial debonding and corresponding adhesional parameters (apparent and ultimate interfacial shear strength, friction stress, critical energy release rate, work of adhesion, and adhesional pressure) were applied for theoretical calculations. The results showed a clear trend for the impact of different silane blends on the interfacial properties. The specimens containing 75:25 and 50:50 of inorganic–organic silane blends show the most effective improvement in the interfacial adhesion properties between glass fiber and epoxy resin. Scanning electron microscopy was used to visualize the failure surface of the specimen after the microdroplet test. The scanning electron microscopic images indicated that the failure in the blend sized treated glass fiber–epoxy matrix specimen runs predominantly along the interphase and combines both cohesive failure in resin (the presence of some resin fragments) and adhesive failure (some bare fiber surfaces can be seen).

scholarly journals Performance of ZnO nanoparticles for fire retardant and UV protection of pine wood

BioResources ◽  
2018 ◽  
Vol 13 (3) ◽  
pp. 6963-6969
Author(s):  
Higor Rogerio Favarim ◽  
Lucas Oliveira Leite
Keyword(s):  
Uv Radiation ◽  
Zno Nanoparticles ◽  
Sol Gel ◽  
Fire Retardant ◽  
Zinc Nitrate ◽  
Uv Resistance ◽  
Pine Wood ◽  
Open Flame ◽  
Fire Retardance ◽  
Uv Lamp

The aim of this paper was to investigate the influence of zinc oxide (ZnO) nanoparticles on the resistance of pine wood to fire and ultraviolet (UV) radiation. The ZnO nanoparticles were prepared from aqueous zinc nitrate via a proteic sol-gel method. Dried samples were impregnated using immersion in an aqueous solution of ZnO nanoparticles in the amount of 1 wt.% wood. Samples were exposed to an open flame to test the fire retardance, and a high-pressure UV lamp was used to test the UV resistance. The results showed an improvement in the fire retardance and UV radiation resistance after the impregnation of ZnO nanoparticles.

Interfacial Adhesion Properties of Oxygen Plasma Treated Polyketone Fiber with Natural Rubber

2012 ◽  
Vol 13 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Jong Sung Won ◽  
Hae Young Choi ◽  
Jae Jung Yoo ◽  
Han Na Choi ◽  
Da Kyung Yong ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Interfacial Adhesion ◽  
Oxygen Plasma ◽  
Adhesion Properties

Improving the interfacial properties of carbon fibers/vinyl ester composites by vinyl functionalization on the carbon fiber surface

RSC Advances ◽  
2016 ◽  
Vol 6 (35) ◽  
pp. 29428-29436 ◽  
Author(s):  
Xiuping Zhang ◽  
Liu Liu ◽  
Ming Li ◽  
Yanjie Chang ◽  
Lei Shang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Vinyl Ester ◽  
Interfacial Adhesion ◽  
Fiber Surface ◽  
Interfacial Properties ◽  
Resin Composites ◽  
Vinyl Ester Resin ◽  
Adhesion Properties ◽  
Carbon Fiber Surface

APMA functionalized CFs can significantly improve the interfacial adhesion properties of the carbon fiber reinforced vinyl ester resin composites.

Fracture Behavior of Hydroxyapatite-Filled Polycaprolactone

2006 ◽  
Author(s):  
Shing-Chung Wong ◽  
Avinash Baji
Keyword(s):  
Adhesive Strength ◽  
Interfacial Adhesion ◽  
Fracture Behavior ◽  
Peel Test ◽  
Adhesive Bond ◽  
Bioactive Components ◽  
Fracture Characterization ◽  
Adhesion Properties ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

This paper reports some fracture characterization results of hydroxyapatite (HAP)-filled poly(ε-caprolactone) (PCL). For the fracture toughness tests, the HAP concentration was steadily increased. The effect of HAP phase in PCL on the fracture and tearing toughnesses was investigated. The techniques of essential work of fracture (EWF) and tear strength were attempted. T-peel test was also used to evaluate the adhesive bond strength between HAP and PCL components using compression molded PCL-HAP-PCL laminates. Little is reported on the interfacial adhesion properties between bioactive components in scaffold development. The influence of PCL layer thickness (1.25, 2.5 and 3.5 mm) on adhesive strength between HAP and PCL was investigated. The adhesion between HAP and PCL components was found to be relatively strong; however, the thickness of PCL layers did not significantly influence the adhesive strength.

Sign in / Sign up

Export Citation Format

Share Document