| 第 46 卷第 1 期 |  | Vol. 46 No. 1 | | 2016 年 2 月 | Feb 2016 |
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所属栏目：功能材料
木质素／陶土复合物的制备及其在丁腈橡胶中的应用研究 |
| 段锦华，罗琼林，彭丽敏，苏胜培*
（湖南师范大学 化学化工学院 资源精细化与先进材料重点实验室，湖南 长沙 410081） |
| 摘 要：以木质素（lignin）和陶土（clay）为原料，混合球磨制备了木质素／陶土复合物（CLC），并将其作为填料制备了木质素-陶土／丁腈橡胶（CLC／NBR）复合材料。首先，探讨了在填料为50份数时，填料组成对NBR复合材料的硫化特性、交联密度、力学性能、老化性能和玻璃化转变温度（Tg）的影响。基于优化的填料组成比例，研究了不同填料份数对NBR复合材料力学性能的影响。研究结果表明：在填料份数为50时，陶土与木质素比例为100∶40时，其综合性能较好，拉伸强度、断裂伸长率、300%定伸应力和老化后拉伸强度保持率分别为16.1 MPa、697%、3.2 MPa和62%；CLC／NBR复合材料的Tg相对未填充丁腈橡胶上升了6.8℃。在陶土与木质素比例为100∶40时，当填料份数为60，其拉伸强度、断裂伸长率和300%定伸应力分别为17.5 MPa、734%和3.4 MPa。 |
| 关键词：丁腈橡胶；木质素；陶土；木质素-陶土／丁腈橡胶复合材料 |
| 中图分类号：TQ333 文献标识码：A 文章编号：1009-9212（2016）01-0074-06 |
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| Application of Lignin-clay Complex in Nitrile Butadiene Rubber |
| DUAN Jin-hua, LUO Qiong-lin, PENG Li-min, SU Sheng-pei*
(College of Chemistry and Chemical Engineering, Key Lab of Sustainable Resources Processing and Advanced Materials, Hunan Normal University, Changsha 410081, China) |
| Abstract：The lignin-clay/NBR composites(CLC/NBR) were prepared by mechanical blending of NBR with lignin-clay complex(CLC), a mixture obtained from the lignin and clay prepared by ball-milling. Effects of the different ratio of lignin to clay at a CLC loading of 50 phr on the curing characteristics, crosslinking densities, mechanical properties, thermo-oxidative aging properties and the glass-transition temperature(Tg) of the CLC/NBR composites were also evaluated. The influence of the loading of CLC on the mechanical properties of CLC/NBR composites was also explored. The experimental results indicated that the best comprehensive performance was obtained when the ratio of clay to lignin was 100 to 40 at a CLC loading of 50 phr; the tensile strength, elongation at break and 300% modulus of rubber composite were 16.1 MPa, 697% and 3.2 MPa, respectively; the retention of tensile strength after aging of rubber composites was 62%; the Tg of CLC/NBR composites was increased by 6.8℃ compared to the NBR without fillers; when the loading of CLC was 60 phr, the ratio of the lignin to clay was 100:40, the tensile strength, elongation at break and 300% modulus of NBR composite were 17.5 MPa, 734% and 3.4 MPa, respectively. |
| Key words：nitrile butadiene rubber; lignin; clay; lignin-clay/NBR composite |
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基金项目：湖南师范大学潇湘学者启动资金资助课题（化050613）
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作者简介：段锦华（1990-），湖南隆回人，男，硕士研究生，研究方向：高分子复合材料（E-mail：363796265@qq.com）
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联 系 人：苏胜培，教授，博士生导师（E-mail：sushengpei@gmail.com）。
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收稿日期： 2015-12-0
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