Synthesis of mesoporous silica and its modification of bismaleimide/cyanate ester resin with improved thermal and dielectric properties

2011 ◽  
Vol 23 (3) ◽  
pp. 454-462 ◽  
Author(s):  
Jiang-tao Hu ◽  
Aijuan Gu ◽  
Guozheng Liang ◽  
Dongxian Zhuo ◽  
Li Yuan
2019 ◽  
Vol 3 (4) ◽  
pp. 726-736 ◽  
Author(s):  
Longhui Zheng ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu

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


2011 ◽  
Vol 216 ◽  
pp. 635-639 ◽  
Author(s):  
Zeng Ping Zhang ◽  
Jian Zhong Pei ◽  
Shuan Fa Chen ◽  
Hong Zhao Du ◽  
Yong Wen

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.


RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 40962-40969 ◽  
Author(s):  
Xinyi Dong ◽  
Zhijuan Zhang ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu

Tough, rigid and thermally resistant resins with outstanding dielectric properties were developed based on polysiloxane@polyimide core–shell microspheres and cyanate ester.


2011 ◽  
Vol 216 ◽  
pp. 630-634
Author(s):  
Zeng Ping Zhang ◽  
Yong Wen ◽  
Hong Zhao Du ◽  
Jian Zhong Pei ◽  
Shuan Fa Chen

Methylsilsesquioxane (Me-SSQ) was incorporated into cyanate ester resin (CE) to obtain organic-inorganic hybrids with better dielectric properties in this study. First, methyltriethoxysilane was hydrolyzed and condensed to synthesize Me-SSQ. Then several Me-SSQ/CE hybrids containing different contents of Me-SSQ were prepared. The effect of Me-SSQ content on the dielectric and hot/wet properties of materials was investigated. Results showed that the Me-SSQ/CE hybrid containing 20wt% of Me-SSQ shows a dielectric constant of 2.78, which is much lower than the pure CE resin. At the same time, the dielectric loss of the Me-SSQ/CE hybrids was slightly increased (tanδ<0.006). It indicates that Me-SSQ/CE hybrid is a promising matrix materials for high-performance printed circuit board (PCB).


2011 ◽  
Vol 266 ◽  
pp. 147-150 ◽  
Author(s):  
Zeng Ping Zhang ◽  
Shuan Fa Chen ◽  
Jian Zhong Pei

A functional POSS monomer (POSS-NH2) was employed to modify cyanate ester (CE) resin. A series of POSS-NH2/CE hybrids containing different content of POSS have been prepared by melt casting and then curing. The curing kinetics and reaction mechanisms of the resin systems were studied by using FT-IR. Dielectric properties of the hybrids were also investigated. FT-IR results show that both temperature and POSS content may influence the curing reaction of CE. POSS-NH2 mainly displays the catalytic effect at higher temperature (220oC). The circumstance is more complex at lower temperature(190oC). CE1 containing 1 wt% of POSS has the best dielectric properties.


RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49436-49447 ◽  
Author(s):  
Yayi Ye ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu

The fabrication and origin of high performance cyanate ester resins by building nanostructures in its crosslinked network with polyimide-block-polysiloxane block copolymers.


Polymer ◽  
2021 ◽  
pp. 123831
Author(s):  
Olga Grigoryeva ◽  
Alexander Fainleib ◽  
Olga Starostenko ◽  
Kristina Gusakova ◽  
Viktor Sakhno ◽  
...  

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