Study on porosities of quartz/benzoxazine composite fabricated by RTM process

被引：0

作者：

Yin C.-P. ^{[1
]}

Xiao J.-Y. ^{[1
]}

Li J.-W. ^{[1
]}

Zeng J.-C. ^{[1
]}

Jiang D.-Z. ^{[1
]}

机构：

[1] College of Aerospace and Material Engineering, National University of Defense Technology

来源：

Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2010年 / 30卷 / 02期

关键词：

Barium-phenolic; Benzoxazine; Porosity; Process parameter; Resin transfer molding(RTM);

D O I：

10.3969/j.issn.1005-5053.2010.2.016

中图分类号：

学科分类号：

摘要：

Quartz/benzoxazine composite was fabricated by RTM process. The effect of process parameters on the porosities was investigated compared with those of quartz/barium-phenolic composite. Results show that injection pressure influence porosities of the composites significantly, better sequence of applying injection pressure is low pressure at early stage of the injection process and high pressure at later stage. Injection temperature influence porosities of the composites definitely, optimal injection temperature is the temperature in the range of which the resin viscosity maintains 100 to 500 mPa · s. Porosities of composites decrease with the increase of fiber volume fraction. The effects of thickness of the samples on the porosities of the composites is not obviously. Porosities of quartz/benzoxazine composites are much lower than those of quartz/barium-phenolic composites at the same process condition. The porosities of quartz/benzoxazine composite and quartz/barium-phenolic composite reach 0.32% and 3.49% respectively at the given condition, at which applying injection pressure is 1atm at early stage and 4.5atm at later stage, the fiber volume fraction is 50%, the thickness of the composites are 6 mm.

引用

页码：82 / 88

页数：6

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