低介电常数和低表面自由能的柔性直链脂肪族烷氧基核桥联双酚氰酸酯基 POSS 纳米复合材料。

Low dielectric and low surface free energy flexible linear aliphatic alkoxy core bridged bisphenol cyanate ester based POSS nanocomposites.

机构信息

Polymer Composites Lab, Department of Chemical Engineering, Alagappa College of Technology, Anna University Chennai, India ; Next MEMS lab, School of Mechanical Engineering, Pusan National University Busan, South Korea.

Polymer Composites Lab, Department of Chemical Engineering, Alagappa College of Technology, Anna University Chennai, India.

出版信息

Front Chem. 2013 Oct 14;1:19. doi: 10.3389/fchem.2013.00019. eCollection 2013.

DOI:10.3389/fchem.2013.00019

PMID:24790947

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3982528/

Abstract

The aim of the present work is to develop a new type of flexible linear aliphatic alkoxy core bridged bisphenol cyanate ester (AECE) based POSS nanocomposites for low k applications. The POSS-AECE nanocomposites were developed by incorporating varying weight percentages (0, 5, and 10 wt %) of octakis (dimethylsiloxypropylglycidylether) silsesquioxane (OG-POSS) into cyanate esters. Data from thermal and dielectric studies imply that the POSS reinforced nanocomposite exhibits higher thermal stability and low dielectric value of k = 2.4 (10 wt% POSS-AECE4) compared than those of neat AECE. From the contact angle measurement, it is inferred that, the increase in the percentage incorporation of POSS in to AECE, the values of water contact angle was enhanced. Further, the value of surface free energy was lower when compared to that of neat AECE. The molecular level dispersion of POSS into AECE was ascertained from SEM and TEM analyses.

摘要

本工作旨在开发一种新型的柔性直链脂肪族烷氧基桥联双酚氰酸酯（AECE）基 POSS 纳米复合材料，用于低 k 应用。通过将不同重量百分比（0、5 和 10wt%）的八（二甲基硅氧基丙基缩水甘油醚）倍半硅氧烷（OG-POSS）掺入氰酸酯中，制备了 POSS-AECE 纳米复合材料。热学和介电研究数据表明，与纯 AECE 相比，POSS 增强纳米复合材料表现出更高的热稳定性和低介电常数 k=2.4（10wt% POSS-AECE4）。从接触角测量推断，随着 POSS 在 AECE 中掺入比例的增加，水接触角的值得到提高。此外，与纯 AECE 相比，表面自由能的值更低。通过 SEM 和 TEM 分析确定了 POSS 在 AECE 中的分子水平分散。