硅橡胶热膨胀模具设计与纵横加筋壁板成型质量分析

材料工程与机械制造

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硅橡胶热膨胀模具设计与纵横加筋壁板成型质量分析

邵蒙¹, 顾轶卓¹, 程勇², 孙晶¹, 李敏¹, 张佐光¹

1. 北京航空航天大学材料科学与工程学院空天材料与服役教育部重点实验室, 北京 100191;
2. 成都飞机工业(集团)有限责任公司, 四川成都 610091

收稿日期:2011-08-30 修回日期:2011-11-09 出版日期:2012-06-25 发布日期:2012-06-26
通讯作者: 顾轶卓 E-mail:benniegu@163.com
基金资助:
国家"973"计划(2010CB631104)

Thermal Expansion Mold Design Using Silicone Rubber and Processing Quality Analysis of Bidirectional Stiffened Plates

SHAO Meng¹, GU Yizhuo¹, CHENG Yong², SUN Jing¹, LI Min¹, ZHANG Zuoguang¹

1. Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China;
2. Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610091, China

Received:2011-08-30 Revised:2011-11-09 Online:2012-06-25 Published:2012-06-26
Supported by:
National Basic Research Program of China (2010CB631104)

摘要/Abstract

摘要： 采用闭模硅橡胶热膨胀工艺和硅橡胶辅助热压罐工艺,制备了碳纤维复合材料纵横加筋壁板,分析了2种工艺成型过程的特点及其对成型质量的影响。进一步考察了硅橡胶辅助热压罐工艺下工艺间隙、硅橡胶厚度和金属模块定位对制件密实状态和尺寸精度的影响。结果表明:相比闭模热膨胀工艺,所采用的硅橡胶辅助热压罐工艺及其模具方案更适合于成型纵横加筋壁板;热压罐工艺应按照硅橡胶自由膨胀的方式来设计工艺间隙;硅橡胶的厚度对密实质量影响较小,但厚度越大温度不均匀性越明显;热压罐工艺中采用金属模块定位的方法可以明显提高加筋肋交汇处的尺寸精度和密实质量。研究结果对复合材料格栅结构制造质量控制技术的发展具有指导意义。

关键词: 复合材料, 纵横加筋壁板, 热膨胀, 硅橡胶, 热压罐

Abstract: A thermal expansion process with a closed mold and a silicone rubber assisted autoclave process are both adopted to produce bidirectional stiffened carbon fiber reinforced composite plates. The features of these two processes and their effects on the processing qualities are analyzed. Furthermore, for the silicone rubber assisted autoclave process, the effects of process gap, thickness of silicone rubber and metal mold positioning on the consolidation and dimensional accuracy of the products are studied. The results demonstrate that compared with the thermal expansion process with a closed mold, the silicone rubber assisted autoclave process and its mold design are more suitable for the production of bidirectional stiffened composite plates. The process gap of the thermal expansion process should be designed based on the free-expansion mode of the silicone rubber in the autoclave process. Moreover, the thickness of silicone rubber has little effect on consolidation, while larger thickness results in more obvious unevenness of temperature. The method that holds the metal mold in position in the autoclave process can significantly enhance the dimensional accuracy and consolidation degree at the intersection of ribs. These research results are of significance to the development of control technology on the manufacturing quality for composite grid stiffened structures.

Key words: composites, bidirectional stiffened plate, thermal expansion, silicone rubber, autoclave

中图分类号:

V258
TB332

邵蒙, 顾轶卓, 程勇, 孙晶, 李敏, 张佐光. 硅橡胶热膨胀模具设计与纵横加筋壁板成型质量分析[J]. 航空学报, 2012, (6): 1116-1124.

SHAO Meng, GU Yizhuo, CHENG Yong, SUN Jing, LI Min, ZHANG Zuoguang. Thermal Expansion Mold Design Using Silicone Rubber and Processing Quality Analysis of Bidirectional Stiffened Plates[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, (6): 1116-1124.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

硅橡胶热膨胀模具设计与纵横加筋壁板成型质量分析

Thermal Expansion Mold Design Using Silicone Rubber and Processing Quality Analysis of Bidirectional Stiffened Plates

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