In-Situ Investigation of Resin Shrinkage in the Composite Manufacturing Environment

In-Situ Investigation of Resin Shrinkage in the Composite Manufacturing Environment
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复合材料制造环境中树脂收缩的现场研究

DOI:
10.1007/s10443-021-09887-x
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发表时间:
2021
影响因子:
2.3
通讯作者:
Namilae, Sirish
Namilae, Sirish
中科院分区:
材料科学3区
文献类型:
--
作者:
Motagi, Samarth;Namilae, Sirish

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在复合材料制造过程中聚合物基质的固化收缩导致残余应力,这会不利地影响复合材料结构的结构完整性和尺寸稳定性。在本文中,一种新的方法来测量树脂收缩和应变演变的环氧树脂(EPON-862)在复合材料制造环境。树脂在定制设计的高压釜中固化,具有硼硅酸盐观察窗,而数字图像相关(DIC)用于分析整个固化周期的应变演变。这些加工诱导的应变与使用差示扫描量热法(DSC)的固化状态相关。讨论了复合材料加工过程中聚合物应变演化的不同机制。
Cure shrinkage of the polymer matrix during the composite manufacturing process leads to residual stresses, which can adversely affect the structural integrity and dimensional stability of composite structures. In this paper, a novel approach is developed for measuring the resin shrinkage and strain evolution of an epoxy resin (EPON-862) in the composite manufacturing environment. The resin is cured in a custom designed autoclave with borosilicate viewports, while digital image correlation (DIC) is used to analyze the strain evolution throughout the cure cycle. These processing induced strains are correlated to the cure-state using differential scanning calorimetery (DSC). The different mechanisms involved in the polymer strain evolution during composite processing are discussed.
用于热固性固化收缩和热膨胀测量的简单膨胀计
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发表时间: 1994
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