【摘要】 通过紫外线照射分析中国漆蜡颜色和性能的变化。结果表明,紫外线对中国漆蜡的颜色脱除效果明显,但因部分甘油三酯的光分解导致其针入度下降,随着光照时间延长上述影响更为严重;中国漆蜡含有一定量的不饱和脂肪酸,添加适量大豆油和光引发剂(二苯甲酮)使原漆蜡中不饱和脂肪酸聚合可有效解决这一问题。通过正交实验得到漆蜡脱色与改性的最佳条件:引发剂质量分数为1.0%,大豆油质量分数为15%,光照时间10 min。在较佳条件下处理的中国漆蜡产品呈淡黄色,针入度增加约20%。该方法具有高效、环保和低成本的显著特点,可广泛用于天然蜡的脱色与改性。更多还原

【Abstract】 By researching change on the color and property of urushi wax under ultraviolet radiation,we found that ultraviolet radiation was very effective to decolor,but that resulted in obviously falling down on thixotropic index etc technical data,mainly due to decomposition of the triglycerides in the urushi wax.The longer ultraviolet radiation time was and the more serious the bad effect was.As urushi wax contained a amount of the unsaturated fatty acids,the introduction of the soybean oil and the photoinitiator(benzophenone) into urushi wax made unsaturated fatty acids polymerized can effectively overcome the above problem.By the orthogonal experiment,the better conditions for decolorization and improvement of the property was found to be photoinitiators of 1.0%,the soybean oil of 15% and the radiation time of 10 min.Under the better conditions the radiated urushi wax shown primrose,its thixotropic index increase 20%.In general,the proposed method is of efficiency,environement friendly and low cost.It can be applied to the decolorization and the improvement of property of various natural wax.更多还原