Preparation and properties of cyanate ester/polyorganosiloxane blends with lower dielectric loss and improved toughness

2009 ◽  
Vol 22 (2) ◽  
pp. 262-269 ◽  
Author(s):  
Shankai Dai ◽  
Aijuan Gu ◽  
Guozheng Liang ◽  
Li Yuan
Keyword(s):  
Dielectric Loss ◽  
Cyanate Ester ◽  
Lower Dielectric Loss

Modified cyanate ester resins with lower dielectric loss, improved thermal stability, and flame retardancy

2011 ◽  
Vol 22 (12) ◽  
pp. 2617-2625 ◽  
Author(s):  
Dongxian Zhuo ◽  
Aijuan Gu ◽  
Guozheng Liang ◽  
Jiang-tao Hu ◽  
Cheng Zhou ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Dielectric Loss ◽  
Flame Retardancy ◽  
Cyanate Ester ◽  
Lower Dielectric Loss ◽  
Cyanate Ester Resins

An in situ (K0.5Na0.5)NbO3-doped barium titanate foam framework and its cyanate ester resin composites with temperature-stable dielectric properties and low dielectric loss

2019 ◽  
Vol 3 (4) ◽  
pp. 726-736 ◽  
Author(s):  
Longhui Zheng ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Barium Titanate ◽  
Cyanate Ester ◽  
Resin Composites ◽  
Cyanate Ester Resin ◽  
Low Dielectric ◽  
Doped Barium Titanate

High-k composites with temperature-stable dielectric properties and low dielectric loss obtained through building a network with in situ-doped barium titanate foam.

Modulation and mechanism of spatial structure for multi-layer cyanate ester resin composites to achieve remarkably increased energy storage density and decreased dielectric loss

2020 ◽  
pp. 002199832095188
Author(s):  
Xiaobao Zhang ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Energy Storage ◽  
Dielectric Loss ◽  
Spatial Structure ◽  
Breakdown Strength ◽  
Layer Structure ◽  
Single Layer ◽  
Cyanate Ester ◽  
Energy Storage Density ◽  
Spatial Structures ◽  
Storage Density

Overcoming sticky problems of large dielectric loss and poor breakdown strength ( Eb) is prerequisite of actual applications for high dielectric constant polymer composites. Herein, three kinds of multi-layer structure composites with different spatial structures (2MP-CE/CNT, CE/CNT-2MP-CE/CNT, MP-CE/CNT-MP) were prepared based on carbon nanotubes (CNTs), cyanate ester (CE) resin and mica paper (MP). Compared with traditional single-layer CE/CNT composite, multi-layer CE/CNT-2MP-CE/CNT composites, of which the middle layer is two pieces of MPs with a thickness of 60 µm, while both bottom and top layers are CE/CNT composite, simultaneously achieve 105 reduction in dielectric loss and 18.1 times increase in energy storage density ( Ue). Through modulating two sheets of MPs and CE/CNT as top and bottom layer, respectively, 2MP-CE/CNT composite with 60 μm MPs has the largest breakdown strength ( Eb), its Eb and Ue are severally about 7.1 and 19.5 times of those of CE/CNT composite. The relationship and mechanism between spatial structure and integrated performance such as dielectric properties, Eb and Ue of composites were systematically investigated. The attractive integrated performances of CE/CNT-2MP-CE/CNT and 2MP-CE/CNT composites are attributed to their unique composition and spatial structures, which bring special micro-capacitance and interfacial polarization, and thus leading to outstanding performances. Therefore, this investigation provides a strategy for getting desirable performances through building composites with specific spatial structure.

Preparation and Dielectric Properties of POSS-NH2/Cyanate Ester Resin Organic-Inorganic Hybrids

2011 ◽  
Vol 216 ◽  
pp. 635-639 ◽  
Author(s):  
Zeng Ping Zhang ◽  
Jian Zhong Pei ◽  
Shuan Fa Chen ◽  
Hong Zhao Du ◽  
Yong Wen
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
Cyanate Ester ◽  
Cyanate Ester Resin ◽  
Curing Reaction ◽  
Ft Ir ◽  
Different Content

In order to improve the dielectric and overal properties of cyanate ester (CE) resin, a functional POSS monomer(octa(aminopropyl)silsesquioxane, POSS-NH2), was employed to modify CE. A series of POSS-NH2/CE hybrids (CE, CE1, CE2, CE3 and CE4) containing different content of POSS have been prepared by melt casting and then curing. The curing reaction of the resin systems were monitored by FT-IR. Dielectric properties of the hybrids were investigated in detail. FT-IR results showed the almost disappearance of the –OCN for all resin systems, suggesting the complete curing of CE using the experimental curing technique. Dielectric investigation indicates that CE1 which contains 1 wt% of POSS has the best dielectric properties with not only lowest dielectric constant but also lowest dielectric loss.

High-k Materials with Low Dielectric Loss Based on Two Superposed Gradient Carbon Nanotube/Cyanate Ester Composites

2013 ◽  
Vol 117 (30) ◽  
pp. 15487-15495 ◽  
Author(s):  
Binghao Wang ◽  
Dake Qin ◽  
Guozheng Liang ◽  
Aijuan Gu ◽  
Limei Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Loss ◽  
Cyanate Ester ◽  
Low Dielectric ◽  
High K ◽  
High K Materials

Interfacial RAFT polymerization induced ultra low dielectric loss ceramic/cyanate ester composites

2016 ◽  
Vol 124 ◽  
pp. 10-16 ◽  
Author(s):  
Yusheng Tang ◽  
Shuang Xu ◽  
Yunchuan Xie ◽  
Junwei Gu ◽  
Zhimei Song ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Raft Polymerization ◽  
Cyanate Ester ◽  
Low Dielectric
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