改性热敏黑温致变色木材的耐老化性研究.

Aging resistance is an important index to evaluate the performance of thermochromic wood materials. In this paper, UV absorber was added to modify the organic thermochromic thin wood, with UV accelerated aging method, and the addition of UV light absorbers was investigated for thermochromic properties, thermal stability, weatherability, and surface wettability of the thermochromic wood. The results showed that the addition of UV-326 and UV-531 did not alter the thermal discoloration interval and surface wettability of the thermochromic wood. The addition of UV-326 with low addition amount had no obvious effect on the thermal stability of the material, but the thermochromic wood treated with UV-531 showed poor stability in the cold-heat cycle test. In the ultraviolet accelerated aging text, the addition of UV-326 improved the aging resistance of the material in 8h, the addition of UV-531 showed better anti-aging performance for materials above 12h, the total chromatic aberration of UV-531 thermochromic wood surface could be reduced by 23.76%, after adding 0.4% of the aging treatment after 36h. [ABSTRACT FROM AUTHOR]