【作者】 张静；

【导师】 郝彦忠；

【作者基本信息】 河北科技大学 ， 应用化学， 2012， 硕士

【摘要】 废旧橡胶的再生可以有效利用大量的废橡胶资源，减少对环境的污染，具有显著的经济效益和社会效益。本文研究了符合再生机理的十种橡胶还原助剂对废旧橡胶的再生，并采用正交法探讨了橡胶还原助剂的最佳配比；通过平衡溶胀的方法测定再生橡胶的拉伸强度、扯断伸长率、凝胶含量分数、交联密度和平衡溶胀度，来评价废橡胶再生过程中大分子三维网络的破坏程度。研究结果表明：硫化温度（145℃）、硫化时间（15min）、高效减水剂（4份）、四亚乙基五胺（3份）、六次甲基四胺（4份）、再生时间（10min）时制备的再生胶性能最好，其交联密度是0.44mol/dm3，凝胶含量是72.37%。本文通过开炼机再生法和螺杆挤出再生法使废旧橡胶再生还原，结果表明螺杆挤出再生法对废旧橡胶的再生具有良好的效果。再硫化胶的拉伸强度为12.6MPa，扯断伸长率为403%，与原胶粉直接硫化胶的拉伸强度相比提高了152％，扯断伸长率提高了55％。本文还对螺杆挤出再生法的工艺条件进行了研究，探讨了再生温度、再生时间、精炼温度和精炼时间对橡胶还原再生的影响。结果表明：再生温度（75℃），再生时间（12min），精炼温度（55℃），精炼时间（10min）时，制备的再生胶性能最佳。更多还原

【Abstract】 The reclaiming of waste rubber is a very important project which will save plentifulwaste rubber resource, reduce environment pollution. It has remarkable economic andsocial benefits.In this paper, ten rubber restore aids meeting the regeneration mechanism was used toregenerate scrap rubber. The best ratio of the rubber restore additives were studied withorthogonal table. Tensile strength, elongation at break, gel content fraction, crosslinkdensity and the equilibrium swelling degree which can evaluate break extent ofthree-dimensional network were determined by equation swelling method. The results ofthe study show that: The regenerated rubber with4%superplasticizer,3%four ethyleneamines,4%hexamethylenetetramine;145℃curing temperature and15min curing timehas a prime mechanical capability. Crosslink density can reach0.44mol/dm3, and gelcontent can reach72.37%.In this paper, two methods of regeneration reduction, by mixing mill method andscrew extrusion method, was used to regenerate waste rubber. The result is screwextrusion regeneration has well effect on waste rubber. Tensile strength can reach12.6Mpa,and elongation at break can reach403%, improving152%and55%respectively comparedto preliminary rubber.In this paper, screw extrusion regeneration processing conditions were studied, Theinfluence of regenerated temperature, regenerated time, refining temperature and refiningtime were studied. The results show that: the regenerated rubber with75℃regeneratedtemperature,12min regenerated time,55℃refining temperature and10min refining timehas a prime mechanical capability.更多还原