scholarly journals Surface Treatment on Structure and Property of LiNi0.8Co0.15Al0.05O2 by Silane Coupling Agent

2018 ◽  
Vol 33 (7) ◽  
pp. 749
Author(s):  
FAN Guang-Xin ◽  
LIU Ze-Ping ◽  
WEN Yin ◽  
LIU Bao-Zhong
Keyword(s):  
Surface Treatment ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Structure And Property ◽  
Silane Coupling

The Effect of Surface Treatment on Composites of Water Hyacinth Natural Fiber Reinforced Epoxy Resin

2013 ◽  
Vol 651 ◽  
pp. 480-485 ◽  
Author(s):  
Asep Handaya Saputra ◽  
Arinta Difandra ◽  
Alia Badra Pitaloka
Keyword(s):  
Surface Treatment ◽  
Epoxy Resin ◽  
Coupling Agent ◽  
Water Hyacinth ◽  
Immersion Time ◽  
Silane Coupling Agent ◽  
Natural Fiber ◽  
Aquatic Weed ◽  
Silane Coupling ◽  
Dry Water

Water hyacinth is an aquatic weed which has potential of natural fiber as raw material of composites. The mechanical properties and the availability of water hyacinth in tropical country are a potential that could be developed as natural fiber in composite. In this experiment, surface of water hyacinth treated by silane coupling agent for adhering with epoxy resin. Dry water hyacinth can be obtained by cold pressed and hot pressed which the temperature are varied. The tensile strength of water hyacinth that hot pressed treatment at 110 oC, is 28.36 N/mm2. Silane coupling agent is used for surface treatment. The immersion time of Dry water hyacinth in silane coupling agent is varied from 5, 10, and 15 minutes. The Composite with 15 minutes of immersion time of water hyacinth has the highest bending strength (20.524 N/mm2). From SEM observations showed that the influence of the silane coupling agent is very significant.

Preparation and Mechanical Properties of HA/PHB Composites

2010 ◽  
Vol 105-106 ◽  
pp. 104-107 ◽  
Author(s):  
Zhi Qi Zhuo ◽  
Li Min Dong ◽  
Cheng Wang ◽  
Qing Feng Zan ◽  
Jie Mo Tian
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Fracture Surface ◽  
Surface Treatment ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Bending Strength ◽  
Silane Coupling ◽  
The Impact

This paper focuses on the influence on the mechanical properties of hydroxyapatite / poly-hydroxybutyrate (HA / PHB) composites by different HA contents, and the effect of Silane coupling agent on improving the interface of HA/PHB composite materials. The HA/PHB composites were prepared by ball milling, hot-pressing, the HA content were 0, 5, 10, 15, 20 and 30wt%, respectively. Silane coupling agent was used for HA surface treatment in HA/PHB composites to compare with not having HA surface treatment in HA/PHB composite materials. The impact strength and flexural strength of HA / PHB composites were tested, and the microstructure of the fracture surface was observed by SEM. The results showed that HA could enhance the bending strength of HA/PHB composites. With HA content increased, the bending strength increased first and then decreased, when the HA content was 10wt%, the maximum bending strength reached 32.74MPa, increased about 41% comparing with pure PHB. Silane coupling agent can improve the interface of HA / PHB, then enhance the mechanical strength. When the HA content was 15wt%, the maximum bending strength reached 46.6MPa, Increased about 56% comparing with the same proportion of untreated HA/PHB composite material, and about double comparing with pure PHB.

scholarly journals Chemo-Mechanical Approach to Improve Repair Bond Strength of Denture Teeth

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Zahra A. AlZaher ◽  
Danah F. Almaskin ◽  
Masoumah S. Qaw ◽  
Tahani H. Abu Showmi ◽  
Reem Abualsaud ◽  
...  
Keyword(s):  
Bond Strength ◽  
Thermal Cycling ◽  
Surface Treatment ◽  
Coupling Agent ◽  
Shear Bond Strength ◽  
Silane Coupling Agent ◽  
Testing Machine ◽  
Control Group ◽  
Denture Base ◽  
Silane Coupling

Background. Detachment of acrylic teeth from denture base material is a common complication in dentistry which accounts for 26–30% of repair cases. This study aimed to evaluate the effect of alumina-blasting, silane coupling agent, and thermal cycling on the shear bond strength of repaired teeth to denture base. Materials and Methods. Specimens (140) of repaired teeth to denture bases were fabricated and divided into 14 groups: 7 groups before thermal cycling and 7 groups after thermal cycling (n = 10). The groups were divided according to surface treatment into no treatment (control), treatment of the base (B), the tooth (T), or both (BT). Each group was further subdivided according to the surface treatment method into alumina-blasting or alumina-blasting and silane coupling agent. After treatment, acrylic discs and teeth were fixed in a jig, and the repair procedure was done. Half the specimens were thermally cycled. Shear bond strength was measured using a universal testing machine. ANOVA and Tukey HSD tests were performed at α = 0.05. Results. Surface treatment significantly improved the bond strength compared to the control group P < 0.001 . Comparing surface treatments, alumina-blasting with silane coupling agent treatment resulted in significantly higher strength compared to alumina-blasting alone P < 0.001 . The BT group treated with alumina-blasting and silane coupling agent showed the highest significant shear bond strength (23.91 ± 0.96 MPa) P < 0.001 . Significant drop in strength value was observed in all groups after thermal cycling P < 0.004 except the BT group treated with alumina-blasting P = 0.096 . Conclusion. Surface treatment using alumina-blasting with silane coupling agent for denture base and tooth increased repair strength.

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