农业覆盖用非织造布的保温性能

采用十二烷基苯磺酸钠对TiO2进行改性，通过正交试验研究改性剂用量、温度、时间和PH值对TiO2表面改性的影响。结果表明，当十二烷基苯磺酸钠用量为11%, 温度为90℃，时间为45min，PH值为5时，TiO2改性效果最好。将改性TiO2涂覆的无纺布用于覆盖茶树，记录无纺布棚内外温差，作棚内茶叶中茶多酚和咖啡因含量色谱图，研究农用覆盖无纺布的保温性能。结果发现当改性TiO2质量比为25%时，农用覆盖无纺布棚内外温差最大，茶多酚和咖啡因含量最高，农用覆盖无纺布保温性能最佳。

Thermal insulation properties of agricultural covering nonwovens

The factors include modifier dosage, temperature, time and PH value to the organic surface modification of TiO2 by SDBS was studied with orthogonal experiment. The results show that while the amount of SDBS is 11%, the temperature is 90 ℃, time is 45min, PH value is 5, TiO2 is modified best. Covered tea trees with the modified TiO2 coated nonwovens, recorded shed and outdoor nonwoven temperature and measured content of tea polyphenols and caffeine by chromatograms for studying agricultural covering nonwovens’ insulation performance. The results show that when the mass ratio of modified TiO2 is 25%, the agricultural covering nonwovens’ shed and outdoor temperature is maximum, content of polyphenols and caffeine is the highest, agricultural covering nonwovens’ insulation is best.