甲醛对室内空气的污染与功能纺织品

介绍了家庭装修对室内空气造成的甲醛污染和几种常用处理方法的机理 ,并对近几年兴起的光催化技术和活性碳纤维处理技术与家用纺织品结合的可能性提出了看法。

经纳米二氧化钛整理织物的光催化性能研究

通过对几种典型净化织物 ,涤棉平布、滤尘针刺无纺布、蜂窝活性炭滤网进行纳米TiO2 整理 ,研究了其光催化净化甲醛的性能。滤尘针刺无纺布的TiO2 附着量较高 ,净化甲醛率可达 89.7% ;借助活性炭的吸附净化作用 ,蜂窝活性炭滤网经TiO2

低温等离子体对连续玄武岩纤维改性研究

针对连续玄武岩纤维表面光滑且呈化学惰性,纤维浸润性差导致与树脂基体复合粘结性较差的缺陷,实验采用低温等离子体法改性处理连续玄武岩纤维。在放电时间3 min,放电压强20 Pa条件下,改变放电功率,观察连续玄武岩纤维表面形貌、力学性能、表面摩擦因数和浸润性的变化。结果表明,随着放电功率的增大,连续玄武岩纤维断裂强度下降、摩擦因数增大和浸润性提高。

针织物克质量及颜色对其防紫外线性能的影响

为研究针织物的防紫外线性能,测试7种不同克质量的单面汗布与珠地网眼针织物的防紫外线性能,分析克质量、组织结构对针织物防紫外线性能的影响,并对克质量为180 g/m2,5种颜色、4种饱和度的纯棉汗布针织物进行测试,分析颜色及饱和度对防紫外线性能的影响。结果表明,针织物克质量与防紫外线能力呈正比关系,颜色越深,饱和度越高,对紫外线反射和吸收越多,织物防紫外线能力也越强。

TiO_2/Polyester Non-woven Fabrics as a Kind of Photocatalyst for the Degradation of Formaldehyde Gas

The feasibility of photocatalytic degradation of the formaldehyde gas by titanium dioxide （TiO2）/polyester non-woven fabrics was studied. The effects of parameters such as the concentration of TiO2 solution, pH value, and drying temperature on the photocatalytic degradation of the formaldehyde gas were also studied. The results showed that the photodegradation efficiency of the formaldehyde gas increased rapidly with the increasing of the concentration of TiO2 solution up to 15g/L, but when the concentration was in excess of 15 g/L, the photodegradation efficiency decreased gradually and fluctuated due to light obstruction and disperse state of TiO2. Adjusting the pH value in the solution, the efficiency of photocatalytic degradation of the formaldehyde gas could be improved. The mechanisms of the reaction and the role of the additives were also investigated. After 42hours, TiO2/polyester non-woven fabric showed no significant loss of the photocatalytic activity.