| Effect of Lignin Grafting Silica Hybrid Filler on Properties of Its NR Composites |
| Received:January 07, 2023 Revised:January 07, 2023 |
| DOI：10.12136/j.issn.1000-890X.2024.10.0731 |
| Key Words: lignin；SiO2；NR；physical property；dynamic physical property |
| Author Name | Affiliation | E-mail | | GengChuanBao | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | gcb666w@163.com | | ZHANG Su | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | | | Han Lin Feng | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | | | Zhang Lin | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | | | Chen Hai Ming | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | | | Liu Fu Min | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | | | Lin Guang Yi* | College of Mechanical and Electrical Engineering，Qingdao University of Science and Technology | gylin666@163.com |
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| Abstract: |
| The lignin grafting silica（SiO2） hybrid filler（recorded as lignin@SiO2） was prepared by grafting polymerization of lignin modified with silane coupling agent KH550 and SiO2 modified with silane coupling agent KH560.The lignin@SiO2/natural rubber（NR） composites were prepared using green chemical wet mixing process，and the effect of lignin/SiO2 dosage ratios of the lignin@SiO2 on the lignin@SiO2/NR properties was studied.The results showed that，with the increasing of lignin/SiO2 dosage ratio of the lignin@SiO2，the t10 and t90 of the lignin@SiO2/NR composite were shortened，the Shore A hardness presented a decreasing trend.The lignin@SiO2/NR composite with lignin/SiO2 dosage ratio of 6/9 had the largest tensile strength and the smaller DIN wear，which were 27.6 MPa and 101.42 mm3，respectively.The lignin@SiO2/NR composite with lignin/SiO2 dosage ratio of 12/3 had the largest tensile elongation and larger tear strength，which were 587% and 83 kN·m-1，respectively.The absolute values of the tensile strength change rate and elongation at break change rate of the lignin@SiO2/NR composite showed a decreasing trend after hot air aging.The lignin@SiO2/NR composite with lignin/SiO2 dosage ratio of 3/12 had better wet slip resistance and lower rolling resistance. |
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