| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Preparation and Properties of Composite Resin/Hollow Microspheres High Temperature Buoyancy Materials |
| CAO Chenghao1, GUO Anran1, LIU Jiachen1, ZHANG Junjun2
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1 School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;
2 Institute of Oceanographic Engineering, Tianjin University (Qingdao), Qingdao 266000, China |
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Abstract In order to solve the problem of poor thermal stability of epoxy resin-based solid buoyancy materials, this work proposed to use phenolic resin and methyl silicone resin with excellent temperature resistance to form high temperature resistant composite matrix with epoxy resin to improve the temperature resistance of the whole buoyant material. Density test and quasi-static uniaxial compression experiments were carried out to study the effects of resin content at different temperatures on compressive strength, bulk density, elastic modulus and specific strength of solid buoyancy materials, and the water absorption properties and high temperature resistance of buoyant materials were tested. The results show that the addition of phenolic resin can improve the high temperature resistance of buoyant materials. The epoxy group in the epoxy resin undergoes a ring-opening reaction to copolymerize with the siloxane in the silicone resin to form a composite resin matrix, thereby enhancing the high temperature resistance of the matrix. The sample with 40% silicone resin has the best performance. The compressive strength, bulk density, elastic modulus and specific strength after heat treatment at 200 ℃ are 39 MPa, 0.652 g/cm3, 4.02 GPa, 59.82 MPa/(g/cm3), respectively. After 300 ℃ heat treatment, the compressive strength of buoyant materials can still be maintained above 30 MPa. The water absorption of the buoyant material after heat treatment at different temperatures does not exceed 0.5%.
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Published: 28 January 2021
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| Fund:The Qingdao Marine Engineering Equipment and Technology Think Tank Joint Project (201909163004). |
About author:: Chenghao Caoreceived his B.E. degree from Anhui University of Science and Technology in June 2017. He is currently pursuing his master’s degree at the School of Materials Science and Engineering, Tianjin University under the supervision of Prof Jiachen Liu and Asso-ciate Prof Anran Guo. His research has focused on buoyancy material.
Jiachen Liu, professor at Tianjin University, doctoral tutor. The main research directions of the team include: structural ceramics and their applications, material connection and high temperature insulation sealing materials, deep sea buoyancy materials. In recent years, he has been responsible for more than 40 research projects. |
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2021, Vol. 35 
