以杨木单板为基体,以热敏染料、显色剂、十四醇、增感剂为木材温致变色剂,利用超声波浸渍注入木材的方法制备可逆温致变色杨木单板,研究可逆温致变色杨木单板的浸溃工艺.结果表明:影响试件变色色差(△E*)的主要试验因子为超声波功率,方差分析其在0.01水平下对试件△E*影响显著；其次为浸渍时间和浸渍温度,方差分析二者在0.01水平下对试件△E*影响不显著.最佳浸溃工艺为浸渍温度75.0℃、浸渍时间4.0h、超声波功率120.0W.研制成可逆温致变色杨木单板新产品,杨木单板起始变色温度为26℃,终止变色温度为32℃；温度由26℃升至32℃时,试件由蓝色变成木材本色；温度由32℃降至26℃时,试件由木材本色变成蓝色,达到室温可逆变色的效果.%Poplar (Populus spp. ) veneers were dyed using wood thermochromic gent including thermochromic dye, chromogenic agent, 1-tetradecanol and sensitizing agent though ultrasonic impregnation and the impregnation process of reversible thermochromic poplar veneers was investigated in this research. The results showed that the effect of ultrasonic power on △E* was greatest and its effect on △E* was the most remarkable at 0. 01 levels based on variance analysis. The second effecting factor was impregnation time and the last was impregnation temperature. According to variance analysis, their influence on △E* was not remarkable at 0.01 levels. The optimum impregnation process was impregnation temperature 75.0℃ , impregnation time 4.0 h, and ultrasonic power 120.0 W. The new product of reversible thermochromic poplar veneers was finally made in the laboratory. Its color gradually changed from blue to wood color with temperature increase from 26 ℃ to 32 ℃. Otherwise, its color gradually changed from wood color to blue with temperature decrease from 32 ℃ to 26℃.
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