(1 清华大学土木工程系, 北京 100084; 2 东南大学土木工程学院, 南京 210096; 3 华中科技大学土木与水利工程学院, 武汉 430074; 4 中国建筑设计研究院有限公司, 北京 100044;5 江苏汤臣新材料科技有限公司, 泰兴 225542)

摘要: 有机玻璃具有质量轻、无自爆、可本体聚合等优点,在建筑领域有广泛的应用前景. 为了研究结构用有机玻璃的基本物理性能和材料力学性能,对不同环境温度下结构有机玻璃拉伸性能、压缩性能、平面应变断裂韧性、热膨胀系数和硬度进行了系统的试验研究,测得了结构有机玻璃的弹性模量、抗拉强度、泊松比、抗压强度、断裂韧性、热膨胀系数、硬度性能参数等指标,研究了以上参数随温度的变化规律. 研究表明:在-20~60℃内,温度升高时,有机玻璃材料的弹性模量、抗拉强度、抗压强度、断裂韧性、硬度均降低,热膨胀系数增大,泊松比的变化不明显. 最后,介绍了有机玻璃在建筑和结构领域的工程应用. 研究成果可为结构有机玻璃应用及相关规范编制提供参考.

关键词: 有机玻璃; 力学性能; 断裂韧性; 热膨胀系数; 硬度

中图分类号:TU532 文献标志码:A 文章编号:1002-848X(2023)08-0001-06

DOI:10. 19701 / j. jzjg. ZJ230001

Mechanical properties and engineering application of structural acrylic

WANG Yuanqing1, ZHENG Baofeng2, SHU Ganping2, WANG Zongyi3, SUN Zhou4, TANG Yuesheng5

(1 School of Civil Engineering, Tsinghua University, Beijing 100084, China; 2 School of Civil Engineering,Southeast University, Nanjing 210096, China; 3 School of Civil and Hydraulic Engineering, Huazhong Universityof Science and Technology, Wuhan 430074, China; 4 China Architecture Design and Research Institute Co. , Ltd. ,Beijing 100044, China; 5 Jiangsu Donchamp New Materials Technology Co. , Ltd. , Taixing 225542, China)

Abstract: Acrylic has the advantages of light weight, no self-explosion and bulk polymerization, which has broadapplication prospects in building constructions. In order to study the basic physical properties and mechanical properties ofthe material, the tensile behavior, compression behavior, plan strain fracture toughness, thermal expansion coefficient, andhardness of structural acrylic at various ambient temperatures were systematically tested and studied. The elastic modulus,tensile strength, Poisson’ s ratio, compressive strength, fracture toughness, thermal expansion coefficient, hardness ofstructural acrylic, and the changing laws of the above parameters with temperature were studied. The results show that, inthe range from -20 to 60 ℃ , when increasing the temperature, the elastic modulus, tensile strength, compressive strength,fracture toughness, and hardness decrease, while the thermal expansion coefficient increases. The variation of Poisson’ sratio is not pronounced. At last, the applications of acrylic in architectural and structural engineering were introduced. Theresearch results can provide references for the application of structural acrylic and the preparation of relevant specifications.

Keywords:acrylic; mechanical properties; fracture toughness; thermal expansion coefficient; hardness

∗住房和城乡建设部研究开发项目“有机玻璃在建筑与结构领域的应用技术研究” (K20200452),国家自然科学基金(52208169).

第一作者:王元清,博士,教授,主要从事钢结构、新材料结构研究,Email: wang-yq@ mail. tsinghua. edu. cn.

[引用本文] 王元清,郑宝锋,舒赣平,等. 结构用有机玻璃的力学性能及其工程应用[ J]. 建筑结构,2023,53(8):1-6,35. WANG Yuanqing,ZHENG Baofeng,SHU Ganping,et al. Mechanical properties and engineering applicationof structural acrylic [J]. Building Structure,2023,53(8):1-6,35.