凹凸棒石/油菜秸秆木质陶瓷的制备及性能

为了资源化利用油菜秸秆等废弃物, 以油菜秸秆和凹凸棒石为原料, 以酚醛树脂为黏结剂, 通过复合、 热压、 烧结等工艺过程制备了凹凸棒石/油菜秸秆木质陶瓷。对不同原料质量配比和烧结温度下制备的复合材料进行性能测试。结果表明, 采用该工艺制备凹凸棒石/油菜秸秆木质陶瓷是可行的, 原料的选择、 质量配比、 烧结温度等参数对材料制备过程及性能均有较大的影响。油菜秸秆与凹凸棒石质量配比为1∶2时复合材料的力学性能较好, 烧结温度在600~700 ℃时, 残炭率最高; 在600~800 ℃范围内, 抗弯强度的提高达到最佳; 在800 ℃时, 导电性能得到改善。

Preparation and characterization of palygorskite clay modified woodceramics from rape straw

In this paper, for the recycle of rape straw waste, a new technique had been adopted to prepare palygorskite clay modified woodceramics from rape straw. The composites were prepared through mixing, hotly pressing, and sintering, using rape straw and palygorskite clay as raw materials and phenolresin as adhesive. The obtained composites were characterized with different methods. The results show that the preparation of composites with rape straw, palygorskite clay and phenolresin by the proposed process is feasible. The selection of raw materials, quality ratios and sintering temperature have much effect on the technique and the properties of composites. The mechanics performance of the composites is good, when the mass ratio of rape straw to palygorskite clay is 1∶2. Also for these composites, the carbon yield is the highest at 600~700 ℃ sintering temperature, the increase of the bending strength is the best at 600~800 ℃, and the electrical conductivity is improved at 800 ℃.