Real Time Measurement of High-temperature Shrinkage of Resin-based Materials under Constant Load
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 0.37 mm during heating or after cooling.During heating,the maximum deformation rate of braided quartz/phenolic composite is no more than 6.43％o,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％o,and that of quartz-phenolic hybrid composite is not more than 6.87％o.The test results provide basic physical property data for the high-temperature shrinkage and matching analysis of such materials.
万方数据
维普
