The Development And Research Of High Adsorption Photocatalysis Self-cleaning Decorative Fabric

With the improvement of living standards and lifestyle’s change, the time people live in the house is more and more. Indoor air quality will directly affect people’s lives and work. People have always thought that outdoor air pollution is serious. But in reality, indoor air quality is far worse than the outdoor air quality. Indoor air pollution is2to3times than outdoor air pollution, and in some cases, even up to100times. In recent years, the indoor air pollution caused by volatile organic compounds (VOCs) have caused a series of problems, the problems have caused widespread concern. These VOCs include formaldehyde, benzene, lower alcohols, ketone and halides etc, most of which are carcinogens, such as benzene, vinyl chloride. How to eliminate these volatile organic compounds and reduce the threat to human health has become a hot issue now.In the paper, we propose to use activated carbon’s adsorption and nano-TiO2’s photocatalysis, try using two different methods, develope the decorative fabrics which can adsorb and degradate the indoor organic pollutants (mainly formaldehyde etc). Although the combination of adsorption and degradation has been used more in the air-conditioning filter material, the decoration fabric as an important part of interior decoration, if it has the performance of adsorption and degradation, with the air-conditioning filter materials, it is able to purify indoor air with the benefit of directly contact with the air, large contact area and no need for energy, thus it has greater potential. Through the experiments of paper, we explore the best process of the the fabric’s production, provide a theoretical basis for this type fabric’s mass production in future.In the paper, the first method is that we use coconut carbon fiber which is a type of activated carbon fiber, develope the coconut carbon/cotton interwoven decorative fabrics which have excellent adsorption properties, and then organize them using nano-TiO2, make it has photocatalytic properties. In the experiment, first we test the coconut carbon/cotton blended yarn’s performance, according to test results, conclude that:the lower strength and more hairiness of yarn can not meet the requirements of the rapier loom. According to test results, we study the yarn sizing process, then test the yarn’s performance after sizing. According to test results, we conclude that:the yarn’s performance can meet the requirements of the rapier loom. So we develope nine different coconut carbon/cotton interwoven decorative fabrics in rapier loom, test the fabric,we have the conclusion that the fabric has a good adsorption properties of the formaldehyde and the satin fabric has the best adsorption performance.We select the satin fabric, use nano-TiO2finishing them, and then study their adsorption and degradation performance of formaldehyde. The results show that:when coconut carbon fiber content is45%, dispersion concentration is75g/L, baking temperature is180℃, the experimental results is best, the fabric’s adsorption and degradation rate of formaldehyde can reach98.70%.But coconut carbon fiber is a new type of activated carbon fiber, it’s application in decorative fabrics is less. Today, decorative fabrics on the market are the traditional fabrics. For this situation, we use the second approach to develop the high adsorption, photocatalysis and self-cleaning decorative fabric. In the second method, we use the cotton fabrics the same size as the coconut carbon/cotton interwoven fabrics,organize them with the nano-TiO2and the activated carbon, and then study their adsorption and degradation performance of formaldehyde. The results show that:when the dispersion concentration is75g/L, activated carbon content is36%, baking temperature is178℃,the experimental result is best, the fabric’s adsorption and degradation rate of formaldehyde can reach98.20%.