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研究了HAAKE转矩流变仪转子转速、起始温度和混炼时间对多壁碳纳米管(MCNT)/天然橡胶(NR)复合材料力学性能的影响。结果表明,随着转子转速的增大,复合材料100%定伸应力和300%定伸应力均逐渐减小;当转子转速为60r/min时,拉伸强度最大,混炼胶Payne效应最小,MCNT分散程度较好。起始温度为50℃时,100%定伸应力、300%定伸应力、拉伸强度和撕裂强度都较大,Payne效应较小,MCNT分散程度较好。混炼时间为10min时,复合材料综合性能较好。
The effects of rotor speed, initial temperature and mixing time on the mechanical properties of multi-walled carbon nanotubes (MCNTs) / natural rubber (NR) composites were investigated by HAAKE torque rheometer. The results show that the 100% modulus and 300% modulus decrease gradually with the rotor speed increasing. When the rotor speed is 60 r / min, the tensile strength is the highest and the Payne effect is the least, MCNT better dispersion. When the initial temperature is 50 ℃, the 100% modulus and 300% modulus are all higher, the tensile strength and tear strength are larger, the Payne effect is smaller and the degree of MCNT dispersion is better. When the mixing time is 10min, the composite material has better overall performance.