scholarly journals Effect of Modified Deformed Steel Fiber on Mechanical Properties of Artificial Granite

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xuetao Qiao ◽  
Peng Wang ◽  
Cunfu Yan ◽  
Fang Li ◽  
Long Wu
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Steel Fiber ◽  
Steel Fibers ◽  
Material Strength ◽  
Type Steel ◽  
Pull Out ◽  
Silane Coupling ◽  
Before And After ◽  
Different Shapes

In order to explore the influence of the shape and surface treatment of steel fiber on the mechanical properties of artificial granite matrix, the drawing models of W-type, L-type, V-type, and I-type steel fiber are established, the pull-out force of different shapes of steel fiber is calculated theoretically, and a large number of experimental specimens are made for the pull-out test of steel fiber and material strength test. Both theory and experiment show that W-type steel fiber has the greatest influence in artificial granite. The steel fibers with different shapes were treated with KH-550 silane coupling agent. Then the steel fibers with different shapes before and after treatment were put into the artificial granite matrix for pull-out test and material strength test. The results showed that, compared with L-type, V-type, and I-type steel fibers before and after KH-550 silane coupling agent treatment, W-type steel fibers after KH-550 silane coupling agent treatment have the best strength enhancement effect in artificial granite matrix.

Influence of Silane Coupling Agent on Interfacial Strength of SMA Composite

2010 ◽  
Vol 143-144 ◽  
pp. 933-937
Author(s):  
Yu Long Wang ◽  
Zhen Qing Wang ◽  
Li Min Zhou ◽  
Hai Tao Huang
Keyword(s):  
Coupling Agent ◽  
Shape Control ◽  
Silane Coupling Agent ◽  
Interfacial Strength ◽  
Test Results ◽  
Surrounding Matrix ◽  
Pull Out ◽  
Damage Repair ◽  
Silane Coupling ◽  
Epoxy Matrix Composite

Shape memory alloy (SMA) can be embedded into a host material to achieve shape control, damage repair and self-adaption. It is well recognized that the applications of SMA composites are highly dependent on the integrity of SMA fiber-matrix interface. However, the interfacial debonding often occurs due to the weak bonding of interface between the SMA wire and its surrounding matrix. Therefore, it is necessary to improve interfacial strength of SMA composites. In present paper, the epoxy resin is functionalized by mixing different amount of silane coupling agent to improve the interfacial adhesion of SMA fiber reinforced epoxy matrix composite. The single fiber pull-out test is carried out to evaluate the interfacial strength and the test results indicate that the interfacial strength of SMA composite is improved significantly as compared to the results from unfunctionalized samples.

scholarly journals Properties of Concrete Prepared with Silane Coupling Agent-Impregnated Coral Aggregate and Coral Concrete

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6454
Author(s):  
Jinming Liu ◽  
Boyu Ju ◽  
Qing Yin ◽  
Wei Xie ◽  
Haiying Xiao ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Sem Images ◽  
Microscopic Appearance ◽  
Coarse Aggregates ◽  
Cement Mortars ◽  
Silane Coupling ◽  
Before And After

Silane coupling agent (SCA), a kind of organic solvent, was introduced to improve the performance of coral coarse aggregates and enhance the interfacial adhesion between the inorganic coral aggregate and the cement paste of coral concrete. The crushing indicator and water absorption of the coral aggregates over various dipping times were measured, and the slump, interface microhardness, and compressive strength of coral concrete tested. The microscopic appearances of the coral concrete before and after modification were analyzed based on SEM images. The experimental results indicate that SCA can effectively reduce the crushing indicator and water absorption of coral coarse aggregates, and the modification performance becomes better over time. SCA facilitates the generation of chemical forces between the coral aggregates and cement mortars, improves adhesion between the aggregates and mortars, augments the microhardness of the interface, and increases the compressive strength. According to the microscopic appearance of the treated and untreated coral aggregate interfaces, the aggregates and the mortars are in closer combination after modification.

scholarly journals Treatment of hollow glass bubbles with silane coupling agent. sem on hollow glass bubbles, before and after treatment with silane coupling agent

2021 ◽  
Vol 2 (2) ◽  
pp. 1-7
Author(s):  
Andrei-Ionut Perdum
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Hollow Spheres ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Hollow Glass ◽  
Glass Spheres ◽  
Silane Coupling ◽  
Before And After ◽  
Glass Bubble

In this study will be presented, how 20 millilitres of Silane Coupling Agent, adhered on 5 grams of Hollow Glass Bubbles (HGB), how the micro bubbles are looking before and after mixing, how to filter the hollow spheres from the agent and what needed to be taken in consideration when using coupling agents in processes. This paper will show how Silane Coupling Agent (3-Aminopropyl) triethoxysilane, adhered on the Hollow Glass Bubble (HGB). It is expected to observe at HR-SEM (High- Resolution Scanning Electron Microscopy) how the Hollow Glass Bubbles looks when the Silane Coupling Agent (KH-550) is applied on the filler vs when is not. During the process will be concluded, what risks should be taken in consideration, when using Silane Coupling Agents on Hollow Glass Spheres and what important information/ steps are needed to be taken in consideration before and after coupling treatment.

Adhesion enhancement of steel fibers to acrylic bone cement through a silane coupling agent

2006 ◽  
Vol 76A (1) ◽  
pp. 111-119 ◽  
Author(s):  
S. P. Kotha ◽  
M. Lieberman ◽  
A. Vickers ◽  
S. R. Schmid ◽  
J. J. Mason
Keyword(s):  
Bone Cement ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Steel Fibers ◽  
Acrylic Bone Cement ◽  
Silane Coupling

Preparation and Mechanism of Nano-TiO2 Coatings on Poly(p-phenylene-benzobisoxazole) (PBO) Fiber

2012 ◽  
Vol 724 ◽  
pp. 274-277 ◽  
Author(s):  
Yan Yan Luan ◽  
Xue Feng Liu ◽  
Zhan Nan Peng ◽  
Jian Xin Xie
Keyword(s):  
Coupling Agent ◽  
Interfacial Adhesion ◽  
Silane Coupling Agent ◽  
Room Temperature ◽  
Composite Fiber ◽  
Pull Out ◽  
Silane Coupling ◽  
Pbo Fiber ◽  
Prepared Composite ◽  
Pull Out Strength

nanoTiO2/PBO composite fiber was prepared with a chemical method by depositing nanoTiO2 on the surface of PBO fiber which was treated by silane coupling agent. The process parameters on the preparation of nanoTiO2/PBO composite fiber were optimized according to the interfacial adhesion between the composite fiber and epoxy resin, and the coating mechanism of nanoTiO2/PBO composite fiber was also discussed. The results show that the uniform nanoTiO2/PBO composite fiber with high interfacial adhesion can be prepared on the PBO fiber which was pretreated by silane coupling agent with a concentration of 1.5 % for 35 min at room temperature, in which the nanoTiO2 aqueous solution with a concentration of 1.0wt% was ultrasonic dispersed for 1h in alkaline environment (pH 11), and then the PBO fiber was immersed in the dispersed solution at 60 °C for 6 h to prepare nanoTiO2/PBO composite fiber. The single fiber pull-out strength of the prepared composite fiber was increased by 85.28 % compared with that of the untreated PBO fiber. Silane coupling agent was a bridge of PBO and nanoTiO2, hydrogen bond association and like dissolves like were attributed to the improvement of interfacial adhesion between nanoTiO2 and PBO fiber.

scholarly journals Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2254
Author(s):  
Adeleke A. Oyekanmi ◽  
N. I. Saharudin ◽  
Che Mohamad Hazwan ◽  
Abdul Khalil H. P. S. ◽  
Niyi G. Olaiya ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Cellulose Nanofibrils ◽  
Hydroxyl Groups ◽  
Water Contact ◽  
Silane Coupling ◽  
Cnf Films ◽  
Kenaf Bast ◽  
Thermal Stability Of

Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study, macroalgae were reinforced with cellulose nanofibrils (CNFs) isolated from kenaf bast fibres. The macroalgae CNF film was after that treated with silane for hydrophobicity enhancement. The wettability and functional properties of unmodified macroalgae CNF films were compared with silane-modified macroalgae CNF films. Characterisation of the unmodified and modified biopolymers films was investigated. The atomic force microscope (AFM), SEM morphology, tensile properties, water contact angle, and thermal behaviour of the biofilms showed that the incorporation of Kenaf bast CNF remarkably increased the strength, moisture resistance, and thermal stability of the macroalgae biopolymer films. Moreover, the films’ modification using a silane coupling agent further enhanced the strength and thermal stability of the films apart from improved water-resistance of the biopolymer films compared to unmodified films. The morphology and AFM showed good interfacial interaction of the components of the biopolymer films. The modified biopolymer films exhibited significantly improved hydrophobic properties compared to the unmodified films due to the enhanced dispersion resulting from the silane treatment. The improved biopolymer films can potentially be utilised as packaging materials.

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