A novel botryoidal aramid fiber reinforcement of a PMMA resin for a restorative biomaterial

2017 ◽  
Vol 5 (4) ◽  
pp. 808-816 ◽  
Author(s):  
Xinye He ◽  
Ying Qu ◽  
Jinrong Peng ◽  
Tao Peng ◽  
Zhiyong Qian
Keyword(s):  
Fiber Reinforcement ◽  
Aramid Fiber ◽  
Fiber System ◽  
Pmma Microsphere ◽  
Pmma Resin

A novel botryoidal PMMA microsphere-grafted aramid fiber system is developed to effectively strengthen PMMA restorative biomaterial.

MAIN GOVERNING FACTORS INFLUENCING MECHANICAL PROPERTIES OF SHORT-CUT ARAMID FIBER–REINFORCED ELASTOMERS

2019 ◽  
Vol 92 (3) ◽  
pp. 445-466 ◽  
Author(s):  
N. Vleugels ◽  
W. K. Dierkes ◽  
A. Blume ◽  
L. A. E. M. Reuvekamp ◽  
J. W. M. Noordermeer
Keyword(s):  
Mechanical Properties ◽  
Design Of Experiments ◽  
Fiber Reinforcement ◽  
Aramid Fiber ◽  
Aramid Fibers ◽  
Silane Coupling Agents ◽  
Fiber Concentration ◽  
Matrix Interaction ◽  
Fiber Orientation Distribution ◽  
Fiber Matrix

ABSTRACT This study concerns short-cut aramid fiber reinforcement of synthetic elastomer compounds and their influence on the processability and mechanical properties. Short-fiber reinforcement of elastomers is very complex, because it depends on many mutually interacting factors: fiber concentration, fiber orientation distribution, fiber length and distribution, fiber-matrix interfacial strength, and properties of the matrix. The relationship between these influencing factors is highlighted in an S-SBR compound by design of experiments. Two 3 mm long aramid fibers were used: an epoxy-amine–coated fiber and a virgin fiber without coating. To potentially achieve a fiber–matrix interaction, the following silane coupling agents were employed: bis-(triethoxysilylpropyl)-disulfane (TESPD), bis-(triethoxysilylpropyl)-tetrasulfane (TESPT), S-3-(triethoxysilylpropyl)-octanethioate (NXT), and an alkylpolyether-mercapto-silane (Si 363), all in combination with the adhesion-activated aramid fibers and in comparison with the virgin fibers. They are compared on equimolar basis with regard to the amount of reactive ethoxy groups versus TESPD, making use of a “design of experiments” approach of the experimental setup. The outcome shows that, contrary to common assumptions, the effect of the fiber–matrix interaction is grossly overshadowed by the effects of other factors (i.e., fiber concentration and orientation) on the vulcanization system. For each mechanical property response, an optimization prediction is calculated and confirmed with an experimental run, showing, for example, a 330% potential improvement in the Young's modulus.

Adhesion and Tensile Properties of a Novel Fiber-Metal Laminate Based on Polypropylene Reinforced with Aramid Fibers.

2014 ◽  
Vol 1611 ◽  
pp. 43-48 ◽  
Author(s):  
Nancy G. González-Canché ◽  
J.G. Carrillo ◽  
R.A. Gamboa
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Tensile Properties ◽  
Interfacial Adhesion ◽  
Aramid Fiber ◽  
Thin Layers ◽  
Woven Fabric ◽  
Fiber System ◽  
Tensile Characterization

ABSTRACTThe aim of the present study is to analyze interfacial adhesion and characterize the tensile properties of a FML elaborated from thin layers of an aluminum alloy and layers of maleic anhydride modified polypropylene (MAHPP) reinforced with an aramid woven fabric. For the analysis of interfacial adhesion, a microbond test is carried out on the MAHPP-aramid fiber system and a single lap joint test is performed on FML constituent materials, as well as the tensile characterization of the FML and its constituents is conducted accordingly. Microbond testing revealed an improvement in interfacial shear strength for the MAHPP-aramid fiber system in comparison with that of polypropylene-aramid fiber systems reported in the literature. The apparent shear strength between the FML constituent materials is comparable to that for bonding of aluminum with MAHPP. Tensile characterization of the FML and its constituents showed that the FML presented greater tensile strength than the aluminum alloy; and a more ductile behavior in comparison with its individual components due to the degree of adhesion between the constituents which allows the material to deform in unison.

Effects of Natural Fiber Reinforcement on Water Absorption of Compressed Stabilized Earth Blocks

2012 ◽  
Vol 2 (11) ◽  
pp. 165-167
Author(s):  
B.O .Ugwuishiwu B.O .Ugwuishiwu ◽  
◽  
B.O. Mama B.O. Mama ◽  
N. M Okoye N. M Okoye
Keyword(s):  
Water Absorption ◽  
Natural Fiber ◽  
Fiber Reinforcement ◽  
Earth Blocks

Modelling Light Transmission in a Fiber-Optical Reflection System

2004 ◽  
Vol 9 (1) ◽  
pp. 55-63
Author(s):  
V. Kleiza
Keyword(s):  
Optical Sensors ◽  
Light Transmission ◽  
External Cavity ◽  
Linear Displacement ◽  
Fiber System ◽  
Light Emitting ◽  
Optical Media ◽  
Reflected Light ◽  
Fiber Optical ◽  
Fiber Optical Sensors

Light transmission in the reflection fiber system, located in external optical media, has been investigated for application as sensors. The system was simulated by different models, including external cavity parameters such as the distance between light emitting and receiving fibers and mirror positioning distance. The sensitivity to a linear displacement of the sensors was studied as a function of the distance between the tips of the light emitting fiber and the center of the pair reflected light collecting fibers, by positioning a mirror. Physical fundamentals and operating principles of the advanced fiber optical sensors were revealed.

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