Preparation and properties of hollow silica tubes/bismaleimide/diallylbisphenol A composites with improved toughness, dielectric properties, and flame retardancy

2011 ◽  
Vol 23 (3) ◽  
pp. 326-335 ◽  
Author(s):  
Wei Yao ◽  
Aijuan Gu ◽  
Guozheng Liang ◽  
Dongxian Zhuo ◽  
Li Yuan
Keyword(s):  
Dielectric Properties ◽  
Flame Retardancy ◽  
Hollow Silica ◽  
Diallylbisphenol A

Design, synthesis, flame retardancy and dielectric properties of novel aromatic hyperbranched benzoxazine

2021 ◽  
pp. 105098
Author(s):  
Wanan Cai ◽  
Hailin Wen ◽  
Zhicheng Wang ◽  
Huimin Lu ◽  
Huibo Liu ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Flame Retardancy ◽  
Design Synthesis

Effects of Precursor Infiltration and Pyrolysis Cycles on Properties of Hollow Silica Fiber Reinforced Nitride Composites

2013 ◽  
Vol 328 ◽  
pp. 836-840
Author(s):  
Xiao Rong Zou ◽  
Chang Rui Zhang ◽  
Si Qing Wang ◽  
Hui Zhu ◽  
Cheng An Tao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dielectric Properties ◽  
Silica Fiber ◽  
Low Dielectric Constant ◽  
Fiber Reinforced ◽  
Hollow Silica ◽  
Low Dielectric ◽  
Silica Fibers ◽  
Dielectric Performance ◽  
Calculation Results

2.5-Dimension hollow silica fiber reinforced nitride (2.5D HSFRN) composites were fabricated by repeated infiltration and pyrolysis from hybrid polyborosilazane precursor. The effects of precursor infiltration and pyrolysis (PIP) cycles on densification behavior, mechanical properties, dielectric properties, and microstructures of the composites were investigated. With increasing PIP cycles, the density of 2.5D HSFRN composites increases, the mechanical properties increase accordingly, however, the dielectric properties decrease. The composites prepared after three PIP cycles, which have moderate flexural strength of 77.4MPa and elastic modulus of 20.7GPa, low dielectric constant of 2.98 and loss angle tangent of 3.9×10-3, exhibit suitable mechanical and dielectric properties. The calculation results of dielectric performance show that 2.5D HSFRN composites have good broadband wave-transparent properties, which result from high purity hollow silica fibers with excellent dielectric properties and low density nitride matrix.

scholarly journals A Review on Synthesis, Structural, Flame Retardancy and Dielectric Properties of Hexasubstituted Cyclotriphosphazene

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2916
Author(s):  
Siti Nur Khalidah Usri ◽  
Zuhair Jamain ◽  
Mohamad Zul Hilmey Makmud
Keyword(s):  
Dielectric Properties ◽  
Nitrogen Atom ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
High Potential ◽  
Research Development ◽  
Electrical Field ◽  
Active Elements ◽  
Good Ability ◽  
Low Toxicity

Hexachlorocyclotriphosphazene is a ring compound consisting of an alternating phosphorus and nitrogen atom with two chlorine substituents attached to the phosphorus atom. The six chlorine atoms attached to this cyclo compound can be substituted with any different nucleophile that leads to changes in different chemical and physical properties. The major topics that were investigated in this research are the flame retardancy and dielectric properties of cyclotriphosphazene compounds. Cyclotriphosphazene compounds have high potential to act as a flame retardant, and this compound consists of two active elements attributed to its high flame-retardant character. This compound also demonstrated good ability as a flame retardant due to its low toxicity and less smoke produced. In addition, cyclotriphosphazene compounds were also investigated for their dielectric properties. Cyclotriphosphazene has high potential in the electrical field since it has dielectric properties that can be widely studied in the investigation of any potential application. This review presented literature studies focused on recent research development and studies in the field of cyclotriphosphazene that focused on synthesis, structural, flame retardancy, and dielectric properties of hexachlorocyclotriphosphazene compounds.

Ideal dielectric thermally conductive bismaleimide nanocomposites filled with polyhedral oligomeric silsesquioxane functionalized nanosized boron nitride

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35809-35814 ◽  
Author(s):  
Junwei Gu ◽  
Chaobo Liang ◽  
Jing Dang ◽  
Wencai Dong ◽  
Qiuyu Zhang
Keyword(s):  
Dielectric Properties ◽  
Boron Nitride ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Thermal Stabilities ◽  
Thermally Conductive ◽  
Oligomeric Silsesquioxane ◽  
Ideal Dielectric ◽  
Diallylbisphenol A

NH2–POSS functionalized nanosized boron nitride fillers were performed to fabricate thermally conductive bismaleimide/diallylbisphenol A (BMI/DABA) nanocomposites combining excellent dielectric properties and outstanding thermal stabilities.

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