拉伸速率对天然橡胶/有机黏土复合材料力学性能的影响
Effect of tensile rate on mechanical properties of natural rubber/organoclay composites
高国玮 1梁玉蓉 1张政 2张涛2
作者信息
- 1. 中北大学 材料科学与工程学院,山西 太原 030051;太原工业学院 材料工程系,山西 太原 030008
- 2. 中北大学 材料科学与工程学院,山西 太原 030051
- 折叠
摘要
采用 I.44P有机黏土填充天然橡胶(NR)制备天然橡胶/有机黏土复合材料(NRCNs),考察拉伸速率对 NRCNs力学性能的影响.结果表明,单轴拉伸测试下,拉伸速率为 50 mm/min时,NRCNs的力学性能最优,拉伸强度达到 19.50 MPa,较拉伸速率为 500 mm/min时的拉伸强度提高了 22.64%;随着拉伸速率的提高,NRCNs的结晶度逐渐减小,表明 NRCNs在较慢的拉伸速率下降温结晶性能更好.多轴拉伸测试下,当应变为 120%、拉伸速率为 50 mm/min时,NRCNs 的力学性能最优,拉伸强度达到0.38 MPa,较拉伸速率为 10 mm/min时的拉伸强度提高了 8.57%;在相同的拉伸速率下,经过单轴拉伸的NRCNs的拉伸强度为 0.8 MPa,较多轴拉伸的NRCNs的拉伸强度提高了 128.57%.
Abstract
Natural rubber/organoclay composites(NRCNs)were prepared by 1.44P organic clay filled with natural rubber(NR),and the effect of tensile rate on the mechanical properties of NRCNs was investigated.The results show that under the uniaxial tensile test,when the tensile rate is 50 mm/min,the mechanical properties of NRCNs are the best,and the tensile strength reaches 19.50 MPa,which is 22.64%higher than that at the tensile rate of 500 mm/min.With the increase of the tensile rate,the crystallinity of NRCNs gradually decreased,indicating that the crystallization performance of NRCNs was better at the lower tensile rate.Under the multiaxial tensile test,the tensile strength of NRCNs was the best when the tensile strain was 120%and the tensile rate was 50 mm/min,and the tensile strength reached 0.38 MPa,which was 8.57%higher than that at the tensile rate of 10 mm/min.At the same tensile rate,the tensile strength of NRCNs with uniaxial tension was 0.8 MPa,and the tensile strength of NRCNs with multiaxial tension increased by 128.57%.
关键词
天然橡胶/拉伸速率/拉伸强度Key words
natural rubber/stretch rate/tensile strength引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据