Epoxy/Nanosilica Organic-inorganic Hybrid Materials -Effect of Functional Group of POSS

被引:4
作者
Chu, Hou-Hsein [1 ]
Chen, Yu-Ling [1 ]
Shen, Bei-Huw [2 ]
Chuang, Kuang Sein [1 ]
机构
[1] Feng Chia Univ, Dept Chem Engn, Taichung 407, Taiwan
[2] Natl Chung Shan Inst Sci & Technol, Taichung 407, Taiwan
关键词
Epoxy; Polyhedral oligomeric silsesquioxanes (POSS); Nanocomposite; Hybrid materials; Functional group; MECHANICAL-PROPERTIES; EPOXY-RESIN; THERMAL-STABILITY; COMPOSITES; TOUGHNESS; NANOCOMPOSITES; DEGRADATION;
D O I
10.1007/s12221-022-4016-4
中图分类号
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号
0805 ; 080502 ; 0821 ;
摘要
Epoxy (EP) was mixed and cured with either 1.0, 3.0, 5.0 or 8.0 parts of one polyhedral oligomeric silsesquioxanes (POSS) per hundred parts of epoxy resin, using ethylene diamine as cure agent. Each system was precured at 80 degrees C for 1 h and last cured at 170 degrees C for 1 h, and an appropriate temperature programing was set to ensure that the temperature rise was not too fast to avoid possible poor diffusions. Four POSSs used are glycidyl POSS (G-POSS), aminopropyl isobutyl POSS (A-POSS), PEG POSS (P-POSS), and trisilanol isobutyl POSS (T-POSS). Bearing hard aggregate particles in hybrid composites was found for (EP/T-POSS) and (EP/A-POSS) (both reflected by the pencil hardness), and the tensile strength values were ranked as the first and third, respectively. The (EP/P-POSS) system was ranked the second in tensile strength, where both (EP/P-POSS) and (EP/G-POSS) have uniform distribution of POSS with little aggregation in epoxy matrix. Note that G-POSS was expected to form extensive networks with epoxy, since it has abundant glycidyl groups. The extensive network formation was found to increase Tg with increasing the G-POSS content. The TGA results were nicely compiled with the use of integral procedural decomposition temperature.
引用
收藏
页码:2927 / 2936
页数:10
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