Journal of Radiation Research and Radiation Processing ›› 2019, Vol. 37 ›› Issue (6): 8-17.doi: 10.11889/j.1000-3436.2019.rrj.37.060201

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Surface modification of CaCO3/SiO2 nanoparticles and its effect on theUV aging resistance of natural rubber latex film

CHENG Guojun1(),CHEN Chen1(),LI Shiqian2,TANG Zhongfeng3(),WANG Zhoufeng1,DING Guoxin1   

  1. 1. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001,China
    2. Key Laboratory of Measurement and Control System for Offshore Environment, Fuqing Branch of Fujian Normal University, Fuqing 350300, China
    3. Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201800, China
  • Received:2019-07-18 Revised:2019-11-14 Accepted:2019-11-14 Online:2019-12-20 Published:2019-12-23
  • Contact: CHENG Guojun,CHEN Chen,TANG Zhongfeng E-mail:chengguojun0436@126.com;tangzhongfeng@sinap.ac.cn
  • About author:CHENG Guojun(male) was born in January 1979, and obtained his doctoral degree of science from Anhui University in December 2013, engaging in nanocomposites materials, associate professor, master supervisor|CHENG Guojun(male) was born in January 1979, and obtained his doctoral degree of science from Anhui University in December 2013, engaging in nanocomposites materials, associate professor, master supervisor
  • Supported by:
    the University Outstanding Young Talents Support Program(gxyq2017006);Development Fund of Key Laboratory of Measurement and Control System for Offshore Environment(S1-KF1704);Natural Science Research Project of Colleges and University in Anhui Province(KJ2019A0118);Doctor’s Start-up Research Foundation of Anhui University of Science and Technology (ZY017), and Innovation and Training Program for College Students (201810361071, 201810361278 and 201810361294)

Abstract:

Surface modification of CaCO3 and SiO2 nanoparticles was conducted using n-dodecyltrimethoxysilane (DTMS) as the modifier, and the inorganic nanoparticles after modification with different mass ratios were mixed and filled with natural rubber latex (NRL) to prepare CaCO3/SiO2/NRL vulcanized latex film. The effects of CaCO3 and SiO2 nanoparticles following modification on the ultraviolet (UV) aging of natural rubber latex film (NRLF) were studied. The structures and properties of the inorganic nanoparticles before and after modification were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and a contact angle measuring instrument. The anti-UV aging properties of vulcanized latex films with different mass ratios of CaCO3 and SiO2 nano-systems were investigated through a test of mechanical properties and scanning electron microscopy. The results demonstrated that the agglomeration between the nanoparticles was effectively prevented because of long-chain DTMS and the formation of organic chemical bonds by the inorganic nanoparticles. In addition, the dispersion of the two nanoparticles in the colloid was improved. The inorganic nanoparticles after modification formed a network structure in the NRLF system, and the mechanical properties of the composites were noticeably increased. The composites demonstrated good UV aging resistance at the mass ratio of nano-CaCO3 and nano-SiO2 of 4∶6.

Key words: Nanoparticle, CaCO3, SiO2, Natural rubber latex, Surface modification, Light aging

CLC Number: 

  • TQ331.2