定载荷条件下树脂基材料高温收缩量实时测量

doi:10.12382/bgxb.2023.0158

摘要/Abstract

摘要：

为研究树脂基材料高温收缩量,提出一种测量定载荷条件下复合材料高温收缩量的方法,根据此方法自行设计搭建了复合材料高温收缩过程试验测量装置。以不同树脂基复合材料为研究对象,进行定载荷条件下树脂基复合材料高温收缩过程试验测量,获得碳板热面处及压头冷面处位移变化,得出树脂基复合材料的高温收缩量及冷却后收缩量。研究结果表明:试验装置能够实现定载荷条件下树脂基材料高温收缩量实时测量;无论加热过程或冷却后,试验件最大变形绝对量不超过0.37mm;加热过程中编织石英酚醛复合材料最大变形率不超过6.43‰,石英杂化酚醛复合材料最大变形率不超过3.76‰;冷却后编织石英酚醛复合材料最大变形率不超过4.57‰,石英杂化酚醛复合材料不超过6.87‰;试验结果验证了该测量方法的正确性及有效性,并为该类材料的高温收缩及匹配分析提供了基础物性数据。

关键词: 树脂基复合材料, 定载荷, 高温, 收缩量, 试验测量

Abstract:

To study the high-temperature shrinkage of resin-based materials, a method for measuring the high-temperature shrinkage of composite materials under constant load is proposed, and a measuring device for the high-temperature shrinkage process of composite materials is designed. The high-temperature shrinkages of resin-based materials under constant load are test measured by taking different resin-based materials as the research objects. The changing curves of displacements at the hot surface of carbon plate and the cold surface of indenter were obtained, and the high-temperature shrinkages of resin-based materials and their shrinkages after cooling were measured. The results show that the measuring device can measure the high-temperature shrinkage of resin-based materials in real-time under constant load. The absolute maximum deformation of the test piece is no more than 0.37mm during heating or after cooling. During heating, the maximum deformation rate of braided quartz/ phenolic composite is no more than 6.43‰, and that of quartz-phenolic hybrid composite is no more than 3.76‰. After cooling, the maximum deformation rate of braided quartz/phenolic composite is no more than 4.57‰, and that of quartz-phenolic hybrid composite is not more than 6.87‰. The test results provide basic physical property data for the high-temperature shrinkage and matching analysis of such materials.

Key words: resin-based material, constant load, high temperature, shrinkage, test measurement

中图分类号:

V258

王丽燕, 高扬, 陈伟华, 刘波, 徐芸, 张亮. 定载荷条件下树脂基材料高温收缩量实时测量[J]. 兵工学报, 2024, 45(10): 3577-3584.

WANG Liyan, GAO Yang, CHEN Weihua, LIU Bo, XU Yun, ZHANG Liang. Real Time Measurement of High-temperature Shrinkage of Resin-based Materials under Constant Load[J]. Acta Armamentarii, 2024, 45(10): 3577-3584.

图/表 15

图1 试验系统

Fig.1 Test system

图2 试验件

Fig.2 Test piece

图3 Ucp2_ftd-Ucp1_ftd的理论分析结果

Fig.3 Theoretically analyzed results of Ucp2_ftd-Ucp1_ftd

表1 仪器精度及相关参数

Table 1 Instrument precision and related parameters

仪器	量程范围	精度
位移计	-50~50mm	0.1%
游标卡尺	0~200mm	±0.02mm
K型热电偶	0~1200℃	0.4%

图4 表面温度控制情况

Fig.4 Surface temperature control

图5 典型试验过程位移测量

Fig.5 Displacement measurement curve of quartz-phenolic hybrid composite in typical test process

图6 石英杂化酚醛复合材料温度变化

Fig.6 Temperature changing curves of quartz-phenolic hybrid composites

图7 石英杂化酚醛复合材料位移变化

Fig.7 Displacement curves of quartz-phenolic hybrid composites

图8 W2测量结果与液压杆行程校验对比

Fig.8 Comparison between the measured results of W2 and the hydraulic rod stroke calibration

图9 石英杂化酚醛复合材料相对位移变化

Fig.9 Relative displacement curves of quartz-henolic hybrid composites

图10 编织石英酚醛复合材料温度变化

Fig.10 Temperature changing curves of braided quartz/phenolic composites

图11 编织石英酚醛复合材料位移变化

Fig.11 Displacement curves of braided quartz/phenolic composites

图12 编织石英酚醛复合材料W2与液压杆行程校验对比

Fig.12 Comparison of travel calibration between braided quartz/phenolic composite W2 and hydraulic rod

图13 编织石英酚醛复合材料相对位移变化

Fig.13 Relative displacement curves of braided quartz/phenolic composites

表2 试验前后产品高度、质量对比

Table 2 Comparison of product heights and weights before and after test

试验件	质量/g		失重率/ %	高度/mm		变形量/ mm	冷却后收缩率/‰
试验件	试验前	试验后	失重率/ %	试验前	试验后	变形量/ mm	冷却后收缩率/‰
石英杂化酚醛	147.0	144.9	1.43	48.34	48.01	0.33	6.87
编织石英酚醛	191.9	176.8	7.87	48.18	47.96	0.22	4.57

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