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Featured researches published by Duxin Li.


Journal of Thermoplastic Composite Materials | 2016

Improvement in the tribological properties of polyamide 6: Talc, glass fiber, graphite, and ultrahigh-molecular-weight polyethylene

Yi-Lan You; Duxin Li; Gao-Jie Si; Ruoyun Lv; Xin Deng

Improvement in the tribological properties of the polyamide 6 (PA6) with various fillers, for example, talc, glass fiber (GF), combined solid lubricants such as graphite, and ultrahigh-molecular-weight polyethylene was systematically studied. The results revealed that GF could reduce the coefficient of friction (COF) and wear rate of pure PA6 more efficiently than talc, and the optimum content was 15 wt%. The COF and wear rate increased with the increase of load, except the wear rate of the composite with 20 and 25 wt% GF, which decreased with the increase of load. The incorporation of combined solid lubricants to PA6 contributed to increases in COF and wear rate. Further addition of 15 wt% GF enhanced the tribological properties remarkably. To further understand the wear mechanism, the worn surfaces were examined using scanning electron microscopy.


The Scientific World Journal | 2013

Tribological and Mechanical Behaviors of Polyamide 6/Glass Fiber Composite Filled with Various Solid Lubricants

Duxin Li; Ying Xie; Wen-Juan Li; Yi-Lan You; Xin Deng

The effects of polytetrafluoroethylene (PTFE), graphite, ultrahigh molecular weight polyethylene (UHMWPE), and their compounds on mechanical and tribological properties of glass-fiber-reinforced polyamide 6 (PA6/GF) were studied. The polymeric materials were blended using twin-screw extruder and subsequently injection molded for test samples. Mechanical properties were investigated in terms of hardness, tensile strength, and impact strength. Friction and wear experiments were run under ambient conditions at a rotating speed of 200 rpm and load of 100 N. The morphologies of the worn surfaces were also observed with scanning electron microscope. The results showed that graphite could increase the tensile strength of PA6/GF-15 composite, but the material became soft. Graphite/UHMWPE complex solid lubricants were effective in increasing the already high impact strength of PA6/GF-15 composite. 5% PTFE gave the maximum reduction in the coefficient of friction. However, PTFE/UHMWPE complex solid lubricants were the best choice for improving both friction and wear behaviors due to the lower friction coefficient and mass wear rate. Moreover, the worn surface of PA6 composites revealed that adhesive wear, abrasive wear, and fatigue wear occurred in this study.


Materials & Design | 2013

Tribological properties of solid lubricants filled glass fiber reinforced polyamide 6 composites

Duxin Li; Yi-Lan You; Xin Deng; Wen-Juan Li; Ying Xie


Wear | 2014

Investigation of the influence of solid lubricants on the tribological properties of polyamide 6 nanocomposite

Yi-Lan You; Duxin Li; Gao-Jie Si; Xin Deng


Wear | 2010

Mechanical and tribological properties of polyamide 6–polyurethane block copolymer reinforced with short glass fibers

Duxin Li; Xin Deng; Jin Wang; Jun Yang; Xiangxiang Li


Polymer Composites | 2016

Preparation, microstructure, mechanical, and thermal properties of in situ polymerized polyimide/organically modified sericite mica composites

Qi Zhang; Duxin Li; Dengwang Lai; Yi-Lan You; Baoli Ou


Polymer Composites | 2013

Effect of solid lubricants on tribological behavior of glass fiber reinforced polyamide 6

Yi-Lan You; Duxin Li; Xin Deng; Wen-Juan Li; Ying Xie


Polymer Composites | 2014

Mechanical properties and nonisothermal crystallization kinetics of polyamide 6/functionalized TiO2 nanocomposites

Baoli Ou; Zhihua Zhou; Qingquan Liu; Bo Liao; Yan Xiao; Juncheng Liu; Xin Zhang; Duxin Li; Qiuguo Xiao; Shaohua Shen


Materials & Design | 2010

Synthesis and characterization of three-arm polyamide 6-polyurethane block copolymer by monomer casting process

Xin Deng; Aixue Liu; Jin Wang; Jun Yang; Duxin Li


Polymer Composites | 2017

Investigation of the influence of red phosphorus, expansible graphite and zinc borate on flame retardancy and wear performance of glass fiber reinforced PA6 composites

Gao-Jie Si; Duxin Li; Yi-Lan You; Xi Hu

Collaboration


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Yi-Lan You

Central South University

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Gao-Jie Si

Central South University

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Baoli Ou

Hunan University of Science and Technology

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Wen-Juan Li

Central South University

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Ying Xie

Central South University

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Ruoyun Lv

Central South University

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Xin Deng

Central South University Forestry and Technology

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Zhihua Zhou

Hunan University of Science and Technology

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Bo Liao

Hunan University of Science and Technology

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Dengwang Lai

Central South University

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