球磨分散和超声分散碳纳米管强化天然橡胶性能对比  

Performance comparison between ball-mill dispersion and ultrasonic dispersion for carbon nanotube reinforced natural rubber

作　　者：张铎 晋琦 李维鸽 李世强 王涛 闫鹏 ZHANG Duo;JIN Qi;LI Wei-ge;LI Shi-qiang;WANG Tao;YAN Peng(Research Institute of Yanchang Petroleum(Group) Co.,Ltd.,Xi’an 710075,China;Shaanxi Yanchang Petroleum Group Rubber Co.,Ltd.,Xianyang 712023,China;Research Institute of Zhejiang University-Taizhou,Taizhou 318000,China)

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]陕西延长石油集团橡胶有限公司,陕西咸阳712023 [3]浙江大学台州研究院,浙江台州318000

出　　处：《应用化工》2022年第4期971-975,共5页Applied Chemical Industry

基　　金：国家科技重大专项课题(2017ZX05039003)。

摘　　要：采用胶乳法合成碳纳米管强化天然橡胶复合材料,分别考察了球磨和超声两种物理强化分散手段对复合材料加工性能、力学性能、导热系数、体积电阻率和DIN磨耗的影响。结果表明,球磨分散相比超声分散,碳纳米管在复合材料中长度更短,缠绕团聚更少,分散性更好。球磨分散试样的硫化速度小于超声分散试样的硫化速度,球磨分散试样硫化更充分。球磨分散试样和超声分散试样均能够提升材料的拉伸强度,但影响规律不同;在提升导热系数和降低体积电阻率性能方面,球磨分散试样要优于超声分散试样;超声分散试样的DIN磨耗要小于球磨分散试样。Carbon nanotube(CNT)reinforced natural rubbery were prepared by rubber-latex mixing method,in which ball-milling dispersion and ultrasonic dispersion were used for CNT dispersion strengthening,and we have studied these methods on effects of processability and mechanical property and thermal conductivity and volume resistance and DIN abrasion.Results showed that compared to ultrasonic dispersion,CNT in ball-mill samples have shorter length with less twists and well dispersibility;the curing rate of ball-mill sample is faster than of ultrasonic sample,and vulcanization reaction in ball-mill samples are more sufficient;both ball-milling and ultrasonic dispersion are good for increasing tensile strength;ball-mill dispersion is superior to ultrasonic dispersion in terms of increasing thermal conductivity and decreasing volume resistance;DIN abrasion of ultrasonic samples are less than of ball-mill samples.

关 键 词：碳纳米管 天然橡胶 球磨 超声 力学性能 导热系数 体积电阻率 DIN磨耗 

分 类 号：TQ332.5[化学工程—橡胶工业]