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Mechanism on surface hydrophobically modification of fibrous wollastonite and its reinforcement of natural rubber

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Abstract

Wollastonite is a clean, environmentally friendly and cheap natural industrial mineral. However, wollastonite is an inorganic filler, its surface chemical modification is needed to improve its compatibility with non-polar rubber. In this study, the surface of fibrous wollastonite was hydrophobically modified by potassium oleate (PO), then we investigated the properties and mechanism of wollastonite modified by PO in different proportions filled with natural rubber. The experimental results showed that the activation index and the interfacial contact angle of wollastonite reached the maximum when PO dosage was 4%. Compared with unmodified wollastonite/NR composites, the tensile product of 4% PO-modified wollastonite/NR composites increased by 17.4%, the Payne effect was the weakest, and the rolling resistance was the lowest, leading to the best comprehensive performance. This is due to the formation of coordination bonds between PO and wollastonite, as well as the stable chemical connection between PO and rubber, which weakens the polarity of wollastonite and thus improves the interfacial bonding strength of wollastonite and rubber. This study provides a new method for the preparation of green tires with low rolling resistance, which is of great significance to energy saving and environmental protection.

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Funding

This research was supported by Shandong Provincial Natural Science Foundation (ZR2020KE037 and ZR2016XJ003), Qingchuang Technology Plan (2019KJB007), Qingdao Science and Technology Special Project (19–6-1–81-nsh).

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Authors and Affiliations

  1. School of Mechatronics Engineering, Qingdao University of Science and Technology, Shandong, 266061, China

    Yao Xiao, Yingjie Hao, Lizhi Yan, Zhenchun Xu, Zhihua Sui, Yi Pan, Chuansheng Wang, Huiguang Bian & Xiaoming Wang

  2. National Engineering Laboratory of Advanced Tire Equipment and Key Materials, Qingdao University of Science and Technology, Shandong Province, Qingdao, 266061, China

    Yao Xiao, Yingjie Hao, Lizhi Yan, Zhenchun Xu, Zhihua Sui, Yi Pan, Chuansheng Wang & Huiguang Bian

Authors
  1. Yao Xiao
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  2. Yingjie Hao
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  3. Lizhi Yan
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  4. Zhenchun Xu
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  5. Zhihua Sui
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  6. Yi Pan
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  7. Chuansheng Wang
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  8. Huiguang Bian
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  9. Xiaoming Wang
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Contributions

Yao Xiao: Methodology, Experiment, Data curation, Writing – original draft; Yingjie Hao: Experiment, Data curation, Formal Analysis; Lizhi Yan: Experiment, Data curation, Formal Analysis; Zhenchun Xu: Experiment, Formal Analysis; Zhihua Sui: Experiment, Data curation; Yi Pan: Drawing, Visualization, Formal Analysis; Chuansheng Wang: Conceptualization, Methodology; Huiguang Bian: Conceptualization, Methodology; Xiaoming Wang: Conceptualization, Formal Analysis.

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Correspondence to Huiguang Bian.

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Xiao, Y., Hao, Y., Yan, L. et al. Mechanism on surface hydrophobically modification of fibrous wollastonite and its reinforcement of natural rubber. J Polym Res 29, 342 (2022). https://doi.org/10.1007/s10965-022-03194-0

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  • DOI: https://doi.org/10.1007/s10965-022-03194-0

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