| 高场强微波处理对樟子松木材宏观裂纹的影响 |
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| 作者姓名： | 熊令明 邢雪峰 林兰英 周永东 傅峰 |
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| 作者单位： | 中国林业科学研究院木材工业研究所,北京 100091 |
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| 基金项目： | “十二五”国家科技支撑计划“木质隔声和发热新材料制造关键技术与示范”;国家林业和草原局林业科技成果推广计划项目“基于高能微波处理的节材高效利用技术”;浙江省与中国林业科学研究院省院合作林业科技项目“大功率微波膨化重组装饰材制备技术研究;示范” |
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| 摘 要： | 探究高场强微波处理过程中，樟子松试材含水率、微波功率、处理时间对试材吸收微波能量和宏观裂纹的影响。结果表明，试材处理前的含水率、微波功率对试材吸收的微波能量有显著影响；当含水率为40%~60%、微波功率为140 kW、处理时间为120 s时，樟子松试材横截面的裂纹面积比和裂纹数量最大。建议根据功能化材料的应用领域，选择不同的微波处理工艺。
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| 关 键 词： | 樟子松 微波处理 高场强 吸收微波能量 宏观裂纹 |
Effects of High-Field-Intensity Microwave Treatment on Macroscopic Cracks in Mongolian Scotch Pine |
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| Authors: | XIONG Ling-ming XING Xue-feng LIN Lan-ying ZHOU Yong-dong FU Feng |
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| Abstract: | Microwave treatment can cause macroscopic cracks in wood. The effects of moisture content, microwave powers, and treatment times on macroscopic cracks in the cross section of Mongolian scotch pine (Pinus sylvestris var. mongolica Litv.) after microwave treatment were investigated. Results showed that the moisture content and microwave powers had a significant influence on the microwave energy absorption by the Mongolian scotch pine samples. The number of cracks in the cross section of Mongolian scotch pine samples and crack area ratio reached the largest at 40%~60% of the moisture content, 140 kW of the microwave power and 120 seconds of the treatment time. It was suggested that different microwave treatment processes should be chosen accordingly based on the application of materials. |
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