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Improved mechanical properties of natural rubber composites reinforced by novel SiO 2 @HCNFs nanofillers at a low filler loading
Author(s) -
Jin Yongzhong,
Zheng Xinglong,
Wang Lu,
Chen Jian,
Wang Cheng,
Li Binghong
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49225
Subject(s) - materials science , composite material , natural rubber , ultimate tensile strength , abrasion (mechanical) , shore durometer , filler (materials) , elongation
In order to improve high reinforcement properties of natural rubber (NR), SiO 2 @HCNFs as novel double‐phase nanofillers at low content have been loaded in NR by using mechanical mixing method. The morphologies and structures of SiO 2 @HCNFs and NR composites were characterized, and the performances of NR composites were measured. The results show that compared with pure N330/NR, the modulus at 300% strain, tensile strength, elongation at break of NR composites increase by 10.7, 17.9, and 9.0%, respectively, at only 2.5 phr SiO 2 @HCNFs content. Meanwhile, the volume abrasion of NR composites is also dramatically reduced at 2.5 phr SiO 2 @HCNFs content, about 53.4% less than that of N330/NR, though the shore hardness increases by only 3.7%. It is also found that NR composites reinforced by SiO 2 @HCNFs at 2.5 phr content have much higher hardness and abrasion performance than HCNFs/NR. The DMA results show that high wet skid resistance and low rolling resistance of NR composites were also achieved by loading 6.5 phr SiO 2 @HCNFs. The unique structure of SiO 2 @HCNFs double‐phase nanofillers plays a crucial role in properties of NR composites, in virtue of the significant synergetic reinforcing effect of both HCNFs and silica.