对回收木粉与高密度聚乙烯(HDPE)和回收稻壳粉与高密度聚乙烯两种木塑复合材料进行循环温度为-29~23℃,-40~23℃,-29~52℃,-40~52℃,-40~80℃的冻-融循环材色和质量试验。结果表明,两种复合材料明度L^*随着冻融周期的增长而增大;两种复合材料色差ΔE^*随着冻融周期的增长而增大,但是不明显;两种复合材料的质量随着冻融周期的增长而减少。
The color and weight of the two wood plastic composite materials,recycling wood flour/HDPE,and recycled rice husk powder/HDPE,under the temperature of-29 ℃~23 ℃,-40 ℃~23 ℃,-29 ℃~52 ℃,-40 B℃~52 ℃,-40 ℃~80 ℃ freeze-thaw cycles were tested.The results showed that:the two composites lightness L^* increased with the growth of freeze-thaw cycle;the two composites ΔE^* increased with the growth of freeze-thaw cycle,but it was not obvious;the weight of the two composites reduced with the growth of freeze-thaw cycle.