scholarly journals Smart adhesion by surface treatment experimental and theoretical insights

2019 ◽  
Vol 23 (4) ◽  
pp. 2355-2363 ◽  
Author(s):  
Chunxia Wang ◽  
Lin Xu ◽  
Guoliang Liu ◽  
Yu Ren ◽  
Jinchun Lv ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Treatment Time ◽  
Unsaturated Polyester ◽  
Atomic Ratio ◽  
Interfacial Shear ◽  
Polyester Matrix ◽  
Polypropylene Matrix

To investigate how plasma treatment affected the surface structure and adhesion to polypropylene matrix and unsaturated polyester matrix, green abaca fibers were treated by low temperature plasma under different plasma processing parameters including treatment time, output power, and working gas. Abaca fibers were characterized by atomic force microscope, X-ray photoelectron spectroscopy, contact angle and interfacial shear strength. The results of contact angle and interfacial shear strength were consistent with the changes in surface roughness and the atomic ratio of the plasma treated abaca fibers with treatment time, output power, and working gas. It was concluded that the surface roughness and atomic ratio played a major role in the adhesion improvement of the plasma treated abaca fibers to polypropylene matrix and unsaturated polyester matrix due to the mechanical interlocking and chemical bonding, respectively. The geometrical potential theory was adopted to elucidate the mechanism of the adhesion property.

scholarly journals Interfacial Debonding Force and Shear Strength of Sugar Palm (Arenga pinnata) Fiber Reinforced Composites by Pull-Out Test

2013 ◽  
Vol 634-638 ◽  
pp. 1931-1936 ◽  
Author(s):  
L.S. Khor ◽  
Leman Zulkiflle ◽  
C. H. Lee
Keyword(s):  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Phenol Formaldehyde ◽  
Unsaturated Polyester ◽  
Interfacial Shear ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Remarkable Improvement ◽  
Pull Out ◽  
Fiber Matrix Interface

An experimental investigation was performed to understand the pulling out behaviour of sugar palm (Arenga pinnata) fibers from unsaturated polyester (UP) composites. The effect of embedded length on the fiber-matrix interface was studied. Fibers were treated with UP and phenol formaldehyde (PF). Untreated fibers were used as the control. Single fiber pull-out tests were carried out for 360 specimens to determine the debonding force and interfacial shear strength (IFSS). Significant increase in debonding force of untreated fiber and UP-impregnated fiber was observed from embedded length of 2 mm to 3 mm. However, no significant increase was observed for the embedded length of more than 3 mm. Debonding force showed remarkable improvement with ascending order of untreated fibers, PF-impregnated fibers, and UP-impregnated fibers. The optimum embedded lengths of untreated fibers and UP fibers were determined. Additional finding showed that the interfacial shear strength decreased as the embedded length increased. However, UP-impregnated fibers showed the highest IFSS value, followed by PF fibers and untreated fibers. Analysis using Scanning Electron Microscope (SEM) was also included to justify the result.

Interfacial Shear Strength of Carbon Fiber Reinforced Polypropylene

2012 ◽  
Vol 525-526 ◽  
pp. 49-52 ◽  
Author(s):  
Kenichi Takemura ◽  
Hideaki Katogi
Keyword(s):  
Contact Angle ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Maleic Anhydride ◽  
Interfacial Shear Strength ◽  
Interfacial Strength ◽  
Interfacial Shear ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Treated Carbon

In this study, interfacial shear strength of carbon fiber reinforced polypropylene were investigated. Two kinds of reinforcements are used. One is non-treated carbon fiber, another is acetone-treated carbon fiber. And two kinds of matrices are used. One is non-treated polypropylene, another is maleic anhydride-polypropylene. Three point flexural tests and micro debonding tests are conducted. As a result, following conclusions are obtained. Acetone treatment and maleic anhydride are effective to the adhesives on the surface between fiber and matrix. But simultaneous treatments are not effective. The shear strength is not dependent on fiber embedded length. The contact angle and fracture load are dependent on fiber embedded length. The interfacial strength is dependent on the contact angle. As the contact angle increases, the interfacial strength increases.

Relationship Between Interfacial Shear Strength and Interfacial Tension of Silicone/Quartz Glass Fiber Composites

2011 ◽  
Vol 311-313 ◽  
pp. 54-58
Author(s):  
Chun Ping Hu ◽  
Bo Jiang ◽  
Bao Li Shi ◽  
Bing Wang ◽  
Li Liu ◽  
...  
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Shear Strength ◽  
Interfacial Tension ◽  
Glass Fiber ◽  
Interfacial Shear Strength ◽  
Van Der Waals ◽  
Fiber Composites ◽  
Interfacial Shear ◽  
Glass Fiber Composites

In this paper, the surface tension components of three silicone resins were determined with an advanced contact angle technique, which was composed of dynamic cycling contact angle and axisymmetric drop shape analysis (ADSA). The interfacial properties of three silicone/quartz glass fiber composites were measured through interfacial shear strength (IFSS) testing experiment. It was found that the Lifshitz–van der Waals component was the main surface tension component for all of the silicones. There is a perfect linear relationship between the interfacial tension and the IFSS. With the increase of the Lifshitz-van der Waals component, the interfacial tension and the IFSS of composites increased. Therefore, the Lifshitz-van der Waals component is the most important parameter for explaining the interfacial shear property of silicone/glass fiber composites.

Interfacial Shear, Tensile Strength and Young Modulus of Kenaf Fiber: The Effects from Different Settings of Alkali Treatment

2018 ◽  
Vol 791 ◽  
pp. 10-18
Author(s):  
Mohd Yussni Hashim ◽  
Azriszul Mohd Amin ◽  
Omar Mohd Faizan Marwah ◽  
Mohd Hilmi Othman ◽  
Muhammad Akmal Johar ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Alkali Treatment ◽  
Unsaturated Polyester ◽  
Young Modulus ◽  
Interfacial Shear ◽  
Alkali Concentration ◽  
Kenaf Fiber ◽  
Treatment Settings

The project explained about what happened to fiber matrix interfacial shear strength, fiber tensile strength and fiber Young modulus when different alkali treatment settings were applied. Kenaf fiber were exposed to different alkali concentration, immersion duration and immersion temperature. To determine the interfacial shear strength (IFSS), unsaturated polyester matrix was utilised to expose the properties. The effects of alkali treatment on sample mechanical properties were successfully evaluated, whereby the treated sample's IFSS showed slightly higher value compared to untreated kenaf fiber at all settings. Meanwhile, the IFSS value was increased at low alkali concentration and decreased with the increment of alkali concentration percentage. On the other hand, untreated kenaf fiber tensile strength and Young modulus average value was 632MPa and 40.65GPa respectively. It was also established that the sample's tensile strength was keep reducing after treatment at all settings. At 30 minutes constant immersion duration, the percentage of kenaf fiber tensile strength decrement was 42.57% when other treatment settings increased. Furthermore, a decline pattern was obtained in term of sample tensile strength and Young modulus when the alkali treatment increased at all settings.

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