Effect of Compression Molding Process Parameter on Thermostability and Mechanical Properties of Fiberglass Reinforced Silicone Resin Composites Bobbin

被引：0
|
作者：
Liu X. [1 ]
Xue S. [1 ]
Yang T. [1 ]
Ren Y. [1 ]
Peng Y. [1 ]
Zheng L. [1 ]
机构：
[1] School of Manufacturing Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2022年 / 38卷 / 04期
关键词：
Compression molding; Curing; Fiberglass reinforced silicone resin composites; Mechanical property; Process parameter; Thermostability;
D O I：
10.16865/j.cnki.1000-7555.2022.0072
中图分类号：
学科分类号：
摘要：
With the development of nuclear power, extreme environment raised higher requirements for insulation parts. Fiberglass reinforced silicone resin (FRSR) is widely used in high- temperature and electromagnetic working environments due to its excellent physical and chemical properties. In order to improve the curing degree of silicone resin and ensure that the product performance matches material characteristics. The yoke coil bobbin of the control rod drive mechanism (CRDM) in the pressurized water reactor (PWR) nuclear power plant was used as compression- molded product of FRSR. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to analyze the curing thermal behavior of silicone resin molding compounds and optimized the compression process parameters of the bobbin. The thermal stability and mechanical properties were analyzed by TGA and tensile tests, and the effect of post-curing parameters on bobbin performance was studied. Experimental results reveal that, compared with normal temperature, the coil bobbin of post-curing at 175 ℃ for 24 h has the greatest increase of tensile strength, reaching 122% and the mass fraction of thermal mass loss is the least, reducing 82.25%. The weightlessness curing and thermal oxidative degradation of silicone resin affect the performance of the product. The optimal process parameters for compression molding yoke coil bobbins are the molding temperature of 130 °C, molding pressure of 50 MPa, pressure holding time of 10 min, post-curing temperature of 175 °C, and post-curing time of 24 h. The molded product can pass the thermal aging performance test verification of nuclear power unit. © 2022, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
引用
收藏
页码：94 / 102
页数：8
相关论文
共 15 条
  • [1] Utekar S, Suriya V K, More N, Et al., Comprehensive study of recycling of thermosetting polymer composites-driving force, challenges and methods, Composites Part B: Engineering, 207, (2021)
  • [2] Trauth A, Weidenmann K A., Continuous-discontinuous sheet moulding compounds-effect of hybridisation on mechanical material properties, Composite Structures, 202, pp. 1087-1098, (2018)
  • [3] Zhang J, Zhang H, Wang H, Et al., Extruded conductive silicone rubber with high compression recovery and good aging-resistance for electromagnetic shielding applications, Polymer Composites, 40, pp. 1078-1086, (2019)
  • [4] Allen T, Busby J, Meyer M, Et al., Materials challenges for nuclear systems, Materials Today, 13, pp. 14-23, (2010)
  • [5] Li R., Study on preparation and post-treatment of high silica/ silicone composites, (2009)
  • [6] Kandar M, Akil H M., Application of design of experiment (DoE) for parameters optimization in compression moulding for flax reinforced biocomposites, Procedia Chemistry, 19, pp. 433-440, (2016)
  • [7] Park S Y, Choi W J, Choi H S., A comparative study on the properties of GLARE laminates cured by autoclave and autoclave consolidation followed by oven postcuring, International Journal of Advanced Manufacturing Technology, 49, pp. 605-613, (2010)
  • [8] Wang C C, Cui F X, Yuan Q L, Et al., Modification of silicon containing arylalkyne resin and properties of composites, Polymer Materials Science & Engineering, 35, 11, pp. 40-45, (2019)
  • [9] Jaafar J, Siregar J P, Tezara C, Et al., A review of important considerations in the compression molding process of short natural fiber composites, The International Journal of Advanced Manufacturing Technology, 105, pp. 3437-3450, (2019)
  • [10] Shun J T, Huang Y D, Cao H L, Et al., Synthesis of high temperature resistant silicone resin and its heat resistance and curing properties, Journal of Aeronautical Materials, 25, 1, pp. 25-29, (2005)
12