复合树脂/空心微珠耐高温浮力材料的制备及性能  

Preparation and Properties of Composite Resin/Hollow Microspheres High Temperature Buoyancy Materials

作　　者：曹成昊 郭安然[1] 刘家臣[1] 张军军[2] CAO Chenghao;GUO Anran;LIU Jiachen;ZHANG Junjun(School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China;Institute of Oceanographic Engineering,Tianjin University(Qingdao),Qingdao 266000,China)

机构地区：[1]天津大学材料科学与工程学院,天津3000722 [2]天津大学青岛海洋工程研究院,青岛266000

出　　处：《材料导报》2021年第2期2185-2190,2212,共7页Materials Reports

基　　金：青岛市海洋工程装备与技术智库联合项目(201909163004)。

摘　　要：本工作针对环氧树脂基固体浮力材料热稳定性差的问题,提出选用耐温性能优良的酚醛树脂和甲基硅树脂与环氧树脂形成耐高温复合基体,从而提高整体浮力材料的耐温特性。通过密度测试和准静态单轴压缩实验,研究了不同温度下树脂含量对固体浮力材料压缩强度、体积密度、弹性模量、比强度的影响,并测试了浮力材料的吸水性能和耐高温性能。研究结果表明:酚醛树脂的加入可以提升浮力材料的耐高温性能。环氧树脂中环氧基通过开环反应与硅树脂中硅氧烷发生共聚反应,形成复合树脂基体,从而增强基体的耐高温性能。硅树脂含量为40%的试样性能最好,200℃热处理后压缩强度、体积密度、弹性模量、比强度分别为39 MPa、0.652 g/cm 3、4.02 GPa、59.82 MPa/(g/cm 3)。300℃热处理后浮力材料抗压强度仍能维持在30 MPa以上。不同温度热处理后浮力材料的吸水率不超过0.5%。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/cm 3,4.02 GPa,59.82 MPa/(g/cm 3),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%.

关 键 词：固体浮力材料 耐高温 耐海水 硅树脂 

分 类 号：TB332[一般工业技术—材料科学与工程]