Surface Modification of Rice Husk Ash by Ethanol-assisted Milling to Reinforce the Properties of Natural Rubber/Butadiene Rubber Composites

R ice husk ash(RHA), obtained by pyrolysis of rice husks, can be used as a potential reinforcing filler for rubber composites. In this work, ball milling in ethanol(ethanol-assisted milling) was used to hydroxylate the surface of RHA, promoting the graft modification of bis-( γ -triethoxysilylpropyl...

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Bibliographic Details
Published in:Chemical research in Chinese universities 2021-06, Vol.37 (3), p.757-762
Main Authors: Chen, Zhixiao, Qian, Miaomiao, Liu, Chang, Xue, Beichen, Yu, Liyun, Zhu, Yanchao, Wang, Xiaofeng
Format: Article
Language:English
Subjects:
Analytical Chemistry
Ashes
Ball milling
Butadiene
Carbon black
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Composite materials
Ethanol
Fillers
Inorganic Chemistry
Mechanical properties
Natural rubber
Organic Chemistry
Physical Chemistry
Pyrolysis
Rubber
Tear strength
Tensile strength
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Summary:R ice husk ash(RHA), obtained by pyrolysis of rice husks, can be used as a potential reinforcing filler for rubber composites. In this work, ball milling in ethanol(ethanol-assisted milling) was used to hydroxylate the surface of RHA, promoting the graft modification of bis-( γ -triethoxysilylpropyl)-tetrasulfide(Si69). The obtained modified RHA(RHA-EM-Si69) was filled into the natural rubber/butadiene rubber(NR/BR) composites, and the filler-rubber interactions were enhanced. In consequence, RHA-EM-Si69 filled NR/BR composites showed overall improvement in the mechanical properties compared with RHA filled NR/BR composites. The tear strength increased from 13.37 kN/m to 34.71 kN/m, and the tensile strength increased from 1.84 MPa to 7.75 MPa. Carbon black(N774) was also used for comparison under the same conditions. This method provides a potential for promoting the value of RHA in rubber industry.
ISSN:1005-9040
2210-3171
DOI:10.1007/s40242-021-0341-1