Synthesis of borosiloxane oligomers containing vinyl and epoxy groups for improving adhesion of addition-curable silicone rubber with epoxy resin

2019 ◽  
Vol 6 (11) ◽  
pp. 115337
Author(s):  
Yu-Long Zhang ◽  
Chong-Guang Zang ◽  
Qing-Jie Jiao ◽  
Xiong-Wei Zhao
Keyword(s):  
Epoxy Resin ◽  
Silicone Rubber ◽  
Epoxy Groups

Borosiloxane oligomers for improving adhesion of addition-curable liquid silicone rubber with epoxy resin by surface treatment

2017 ◽  
Vol 53 (2) ◽  
pp. 1167-1177 ◽  
Author(s):  
Xiongwei Zhao ◽  
Chongguang Zang ◽  
Yalun Sun ◽  
Kaiguo Liu ◽  
Yuquan Wen ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Epoxy Resin ◽  
Silicone Rubber ◽  
Liquid Silicone Rubber ◽  
Liquid Silicone

Characterization of an Improved 1-3 Piezoelectric Composite by Simulation and Experiment

2017 ◽  
Vol 15 (1_suppl) ◽  
pp. 38-44 ◽  
Author(s):  
Chao Zhong ◽  
Likun Wang ◽  
Lei Qin ◽  
Yanjun Zhang
Keyword(s):  
Finite Element ◽  
Epoxy Resin ◽  
Silicone Rubber ◽  
Electromechanical Coupling ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
External Stress ◽  
Piezoelectric Composite ◽  
Bending Deformation ◽  
Simulation And Experiment

Introduction To increase electromechanical coupling factor of 1-3 piezoelectric composite and reduce its bending deformation under external stress, an improved 1-3 piezoelectric composite is developed. In the improved structure, both epoxy resin and silicone rubber are used as polymer material. Methods The simulation model of the improved 1-3 piezoelectric composite was established using the finite element software ANSYS. The relationship of the performance of the improved composite to the volume percentage of silicone rubber was determined by harmonic response analysis and the bending deformation under external stress was simulated by static analysis. The improved composite samples were prepared by cutting and filling methods, and the performance was tested. Results The feasibility of the improved structure was verified by finite element simulation and experiment. The electromechanical coupling factor of the improved composite can reach 0.67 and meanwhile the characteristic impedance can decline to 13 MRayl. The electromechanical coupling factor of the improved composite is higher than that of the composite with only epoxy resin as the polymer and the improved composite can reduce bending deformation. Discussion Comparison of simulation and experiment, the results of the experiment are in general agreement with those from the simulation. However, most experimental values were higher than the simulation results, and the abnormality of the test results was also more obvious than that of the simulation. These findings may be attributed to slight difference in the material parameters of simulation and experiment.

Quantitative Analysis Methods of Thiirane/Epoxy Resin of Bisphenol A

2006 ◽  
Vol 11-12 ◽  
pp. 379-382 ◽  
Author(s):  
Ya Feng Li ◽  
Jue Cheng
Keyword(s):  
Quantitative Analysis ◽  
Bisphenol A ◽  
Epoxy Resin ◽  
1H Nmr ◽  
Nmr Spectra ◽  
Epoxy Compound ◽  
Separation Method ◽  
The Poor ◽  
Epoxide Compound ◽  
Epoxy Groups

Thiirane is usually synthesized by epoxy resin, and there are considerable content of epoxy mixed in thiirane because of the poor yields. In this article, a novel separation method was used to get pure episulfide compound and epoxy compound from thiirane/epoxy resin synthesized in our lab. Furthermore, the perfect 1H NMR spectra of pure episulfide compound and epoxide compound were obtained. The quantitative analysis of content of epoxy groups in thiirane/epoxy resin was performed by using FTIR and was testified by 1H NMR. It was found that the analytical results of the conversion of epoxy groups by the two methods above coincided with each other well.

Organic Aerogels Based on Epoxy Resins: Synthesis and Properties

2020 ◽  
Vol 869 ◽  
pp. 240-245
Author(s):  
Alexey Voytik ◽  
Georgiy V. Malkov ◽  
Artur T. Kapasharov ◽  
Alexey Yu. Kostin
Keyword(s):  
Infrared Spectroscopy ◽  
Epoxy Resin ◽  
Epoxy Resins ◽  
Supercritical Drying ◽  
Curing Conditions ◽  
Solvent Content ◽  
Bet Method ◽  
Catalyst Content ◽  
Organic Aerogels ◽  
Epoxy Groups

The aim of this work was to develop methods for the synthesis of organic aerogels based on epoxy resins and to investigate their properties. Aerogels based on DGEBA-epoxy resin were obtained by CO2-supercritical drying of gel samples prepared from acetone solutions of epoxy resin with different amount of catalyst and solvents. As a result, aerogels of different density were obtained; the dependence of density on the solvent content in the samples was revealed. The aerogels were characterized by infrared spectroscopy to define the degree of conversion of the epoxy groups, by SEM to confirm nanoscale morphology of aerogels, as well as by the BET method to determine the specific surface area of the samples and its dependence on the catalyst content and curing conditions.

Enhanced Adhesion Effect of Epoxy Resin on Metal Surfaces Using Polymer with Catechol and Epoxy Groups

2020 ◽  
Vol 2 (4) ◽  
pp. 1500-1507 ◽  
Author(s):  
Yucheng Zhang ◽  
Koichi Hasegawa ◽  
Sota Kamo ◽  
Kiyoka Takagi ◽  
Wei Ma ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Metal Surfaces ◽  
Epoxy Groups ◽  
Adhesion Effect

The improvement of thermal stability and adhesion of silicone rubber composites modified by phenolic epoxy resin

2019 ◽  
Vol 56 (5) ◽  
pp. 506-512 ◽  
Author(s):  
Liwei Yan ◽  
Bin Zhang ◽  
Yuan Wang ◽  
Cheng Zhou ◽  
Rui Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Epoxy Resin ◽  
Silicone Rubber ◽  
Rubber Composites ◽  
Phenolic Epoxy Resin

Epoxy resin/acrylic composite latexes: reactivity and stability of epoxy groups with carboxyl groups

2001 ◽  
Vol 12 (4) ◽  
pp. 521-532 ◽  
Author(s):  
H. Kawahara ◽  
S. Matsufuji ◽  
T. Goto ◽  
Y. Okamoto ◽  
H. Ogura ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Carboxyl Groups ◽  
Epoxy Groups

Analysis and Experimentation Research of the Static Compressive Mechanical Test of Foam Aluminum Composite

2014 ◽  
Vol 1030-1032 ◽  
pp. 16-19
Author(s):  
Zhen Rong Lin ◽  
Yuan Lai ◽  
Yan Feng Tian
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Energy Absorption ◽  
Silicone Rubber ◽  
Aluminum Foam ◽  
Mechanical Test ◽  
Foam Aluminum ◽  
Aluminum Composite ◽  
Composite Foam ◽  
Modified Epoxy

In order to achieve function-structure integration and improve mechanical properties and energy absorption capability of the foam aluminum composite,foam aluminum filled with silicone rubber-modified epoxy resin was prepared.Static compression test shows that the platform yield stage of foam aluminum filled with modified epoxy resin is uplifted,the mechanical properties and energy absorption capability of foam aluminum are improved.The results are helpful to expand the application of aluminum foam.

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