竹炭的红外辐射特性

Infrared radiation with bamboo charcoal

为了更深入了解竹炭产生远红外线特性,利用傅立叶变换红外光谱仪和红外辐射测量仪,对竹炭红外辐射特性进行了测试与分析。结果表明:①竹炭具有较高的法向比辐射率,在8.00～25.00μm范围内,测试温度25℃时,竹炭法向比辐射率为0.888～0.904。②竹炭红外吸收与维恩定律具有很好的对应关系,在室温下红外吸收峰主要集中在8.00～14.00μm,处于人体极为有利的远红外线波长范围。③在炭化温度为700～1 100℃时竹炭的红外辐射率基本相同;不同竹龄的竹炭红外发射率有差异,这主要与竹炭本身的化学组成成分有关。竹炭在保暖、保健等领域的应用具有较大的实际意义。

Infrared radiation characteristics with bamboo charcoal were studied using a Fourier spectrometer and infrared radiation. Results showed that （1） with 25℃ and a wave from 8.00 to 25.00 μm, the normal spectral emissivity of bamboo charcoal was high reaching 0.888 to 0.904. （2） Infrared absorption of bamboo charcoal with peaks centered around 8.00 to 14.00 μm corresponded well to Wien＇s Law, which fits to the human body extremely advantageous remote infrared ray wavelength range. （3） The infrared emissivity of bamboo charcoal was no significant difference at 700 - 1 100 ℃. Bamboo charcoal for different ages of bamboo had different infrared emissivity abilities, mainly due to its chemical composition. This research demonstrated that bamboo charcoal has great practical application potential in fields, such as health care, maintaining body heat, and so on. [Ch, 2 fig. 1 tab. 18 ref. ]