复合材料科学与工程Issue(5)：107-113,7.DOI:10.19936/j.cnki.2096-8000.20240528.015
软模成型工艺中软模的膨胀行为及压力平衡研究
Study on thermal expansion behavior and pressure balance of soft mode during soft-die forming process
摘要
Abstract
The matching of the expansion and pressurization of soft modes was the key to the soft molding of composites.In order to control the pressure of soft die in the process of soft die forming,the compression Poisson's ratio,expansion behavior and pressure balance characteristics of soft mold were studied.The expansion and pressur-ization processes was demarcated into three steps,including free expansion,semi-free expansion and pressurization and volume-limited expansion and pressurization of soft mold.The deformation and pressure theory of different stages of soft modes were studied,and the size and pressure changes of soft modes was measured by soft mode heat-ing system.The size of the soft die was designed based on the above theory,and the curing process was optimized.The C-beam and I-beam were fabricated by soft-mold forming technology,and the internal quality and dimensional accuracy were characterized.The experimental results show that the compression Poisson's ratio of soft mold material is 0.495,and the expansion behavior and pressure balance characteristics of the soft modesare consistent with the theoretical analysis in different stages.The precise control of pressure in the process of composite soft die molding is realized through the size design and curing process optimization,and the C-beam and I-beam with excellent quality and high dimensional accuracy are successfully fabricated.关键词
软模/泊松比/膨胀行为/压力平衡/复合材料Key words
soft mold/Poisson's ratio/expansion behavior/pressure balance/composite分类
通用工业技术引用本文复制引用
马腾飞,郭子民,李桂洋,郑国栋,李伟明..软模成型工艺中软模的膨胀行为及压力平衡研究[J].复合材料科学与工程,2024,(5):107-113,7.基金项目
天津市科技计划项目(20YFZCGX00230) （20YFZCGX00230）
