Study in Surface Modification of Silica in Silicone Rubber

2012 ◽  
Vol 496 ◽  
pp. 34-37 ◽  
Author(s):  
Jie Sheng Liu ◽  
Dong Lai Li ◽  
Jun Yu ◽  
Zong Wang Zhang
Keyword(s):  
Silicone Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Silica Filler ◽  
Bound Rubber ◽  
Silane Coupling ◽  
Unmodified Silica ◽  
Ft Ir ◽  
Surface Modified ◽  
Agent Treatment

Silica fillers are well known to improve the mechanical properties of elastomers.Nevertheless, the silica filler particles tend to aggregate and affect the properties of the elastomer. In the present study, the silica filler was modified by silane coupling agent (A-151) in order to improve the dispersion of the filler in silicone rubber. The composites samples added with surface treated silica filler was characterized by FT-IR, bound rubber, and fluorescent microscope with that reinforced by the unmodified filler as a comparison. FT-IR results evidences the successful surface modified by silane coupling agent. Bound rubber contents of the origin silica filler are much lower than that of the silica filler with the silane coupling agent treatment. The modified silica-filled shows a better dispersion than that of the origin silica filler and the agglomeration of filler occurs in the unmodified silica-filler compounds.

Surface Functionalization of Zirconia Nanocrystals with Silane Coupling Agent and its Dispersion Behavior in O-Phenylphenoxyethyl Acrylate

2018 ◽  
Vol 922 ◽  
pp. 20-25 ◽  
Author(s):  
Hee Seon Lee ◽  
Jeong Min Park ◽  
Kyu Hong Hwang ◽  
Hyung Mi Lim
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Coupling Agents ◽  
Solvothermal Reaction ◽  
Silane Coupling Agents ◽  
Propyl Methacrylate ◽  
Silane Coupling ◽  
Ft Ir ◽  
Surface Modified ◽  
Dispersion Of Nanoparticles

Highly crystalline and dispersible zirconia, synthesized by solvothermal reaction of zirconium (IV) isopropoxide isopropanol complex in benzyl alcohol, were functionalized with silane coupling agent and dispersed with o-phenylphenoxyethyl acrylate (OPPEA). Silane coupling agents such as 3-aminopropyltriethoxysilane (APTES) of amino functional silane, decyltrimethoxysilane (DTMS) of alkyl functional silane and 3-(trimethoxysilyl) propyl methacrylate (MPS) of acrylate functional silane have been used to modify nanoparticle surfaces and obtain dispersion of nanoparticles within OPPEA. The surface modified zirconia was compared according to silane coupling agent, FT-IR and TGA demonstrated that APTES, DMTS and MPS are chemically attached to the surface of the zirconia. The MPS-zirconia is dispersed as about 5 nm sized, whereas the APTES-zirconia, DTMS-zirconia are agglomerated. The MPS-zirconia/tetrahydrofuran (THF) sol at 15wt% loading shows high transmittance of 68 % at 550 cm-1 and the 50wt% surface modified-zirconia/OPPEA sol show refractive index of 1.657.

Effects of Silane Coupling Agent Treatment on Properties of PMN/EP Composites

2010 ◽  
Vol 160-162 ◽  
pp. 359-363 ◽  
Author(s):  
Min Xian Shi ◽  
Ming Zhang ◽  
Zhi Xiong Huang ◽  
Yan Qin
Keyword(s):  
Dielectric Constant ◽  
Dielectric Property ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Casting Method ◽  
Dynamic Mechanical Analyzer ◽  
Impedance Analyzer ◽  
Damping Property ◽  
Silane Coupling ◽  
Agent Treatment

The PMN/EP composites were prepared by resin casting method from PMN powder pretreated with silane coupling agent KH-550. The microstructure of the PMN/EP composite was observed by SEM, the damping property and dielectric property of the composite were investigated by dynamic mechanical analyzer and impedance analyzer respectively. In the composite prepared with PMN powder pretreated by 1.5% silane coupling agent, much epoxy resin fragment is attached in the surface of PMN particles. When the silane coupling agent concentration is 1.5%, the composite shows the best damping property. Dielectric analyses suggest that the dielectric constant of the PMN/EP composite decreases with the increase of silane coupling agent content, however the dielectric loss increases with the increase of silane coupling agent content.

Improving properties of silicone rubber composites using macromolecular silane coupling agent (MMSCA)

2016 ◽  
Vol 133 (19) ◽  
pp. n/a-n/a ◽  
Author(s):  
Honggang Mei ◽  
Guowen Chen ◽  
Qingzeng Zhu ◽  
Peng Dong ◽  
Dannan Zhao ◽  
...  
Keyword(s):  
Silicone Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Rubber Composites ◽  
Silane Coupling

Surface Hydrophilic Modification of Polypropylene Fiber by Hydrolysis of Silane Coupling Agent

2018 ◽  
Vol 779 ◽  
pp. 80-85
Author(s):  
Yi Wei Fei ◽  
Jun Ma ◽  
Shian Sun ◽  
Li Ping Tong ◽  
Hong Ming Liu
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Polypropylene Fiber ◽  
Hydrophobic Surface ◽  
Interface Bonding ◽  
Hydrophilic Modification ◽  
Modification Process ◽  
Silane Coupling ◽  
Ft Ir ◽  
Hydrolysis Of

Silane coupling agent is applied to modify polypropylene fiber. The modification effectively transfers the hydrophobic surface of polypropylene fiber to hydrophilic surface. Results from FT-IR, SEM and contact angle meter suggest that that the surface functional groups, the morphology and hydrophilia of polypropylene fiber is changed during the hydrolysis reactions of silane coupling agent. The modification process not only improve the surface hydrophilia of polypropylene fiber, but also convert the smooth surface of unmodified fibers to rough surface of modified fibers which gives stronger interface bonding force between fiber and substrate in the field of composite applications.

Study on CO2 Adsorption of Sepiolite Modified by Silane Coupling

2014 ◽  
Vol 941-944 ◽  
pp. 960-964
Author(s):  
Hua Li Zhang ◽  
Han Jun Wu ◽  
Zhi Quan Pan ◽  
Shu Hang Jiang
Keyword(s):  
Calcium Carbonate ◽  
Chemical Analysis ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Raw Material ◽  
Analysis Method ◽  
Surface Porosity ◽  
Weight Percentage ◽  
Silane Coupling ◽  
Ft Ir

The natural sepiolite as the main raw material, removing the quartz, calcium carbonate and other impurities through purification. The purified sepiolite was roasting activation pretreatment, in order to enhance surface porosity and reaction activity, and then was made of sepiolite composite by modifying through the use of silane coupling agent. The samples were characterized by XRD、SEM、BET、FT-IR and other chemical analysis method. The weight percentage of CO2 which were adsorbed by the modified sepiolite increased from 4% to 14.61%.

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