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Acta Armamentarii ›› 2024, Vol. 45 ›› Issue (10): 3577-3584.doi: 10.12382/bgxb.2023.0158

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Real Time Measurement of High-temperature Shrinkage of Resin-based Materials under Constant Load

WANG Liyan*(), GAO Yang, CHEN Weihua, LIU Bo, XU Yun, ZHANG Liang   

  1. Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing 100076, China
  • Received:2023-03-01 Online:2023-06-27
  • Contact: WANG Liyan

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

CLC Number: