摘要
为了资源化利用稻草秸秆废弃物,开展了环保型人造板饰面用稻草秸秆漂白工艺研究。试验分析了漂白剂浓度、温度、超声频率和处理时间对稻草秸秆表面白度值W、色差△E*等色度学指标的影响,通过正交实验优化了稻草秸秆漂白工艺,并与未漂白稻草秸秆比较,考察其耐光性的变化。结果表明,采用亚硫酸氢钠作为漂白主剂对稻草秸秆进行漂白的最佳工艺为漂白溶液浓度5%,温度30℃,超声频率28 kHz,漂白处理时间为60 min。在此工艺下漂白的稻草秸秆表面纹理清晰,色泽白净,白度值W为71.86,色差△E*为14.90。经过120 h紫外光辐射后,漂白稻秸表面耐光性有所下降,辐射后白度下降,△W为4.0,色差变化较为明显,△E*最大值达到6.2。
In order to utilize rice straw as a resource, this paper investigated the bleaching technology of rice straw as covering material for eco-friendly wood-based panel. The effects of bleaching agent concentration, temperature, ultrasonic frequency and bleaching time on chromatic values were analyzed. The results showed that the optimum bleaching parameters were as follows： bleaching agent concentration of 5% , bleaching temperature of 30℃, ultrasonic frequency of 28 kHz and bleaching time of 60rain. Rice straw bleached in this condition was clear and white. The whiteness （W） and color difference （ △E＋ ） were 71.86 and 14.90 respectively. The lightness of the bleached rice straw was lowered after 120 h of ultraviolet radiation. A W of bleached rice straw decreased to 4.0, and △E＋ reached 6.2 after 72 h radiation.
出处
《林业科技开发》
北大核心
2013年第2期84-87,共4页
China Forestry Science and Technology
基金
东北林业大学研究生科技创新项目资助
高等学校博士学科点专项科研基金(编号:20090062120001)
关键词
稻草秸秆
漂白
饰面材料
色度学参数
rice straw
bleaching
iinishing material
chromatic value
