Preparation Of Nanoparticles And The Study On Anti-ultraviolet Cotton Fabrics With Nano-powders

With the enhancement of people's living standard, increment of environmentalprotection consciousness, rising of "Green" consumption, more and more peope pay moreattention to the comfort, safety and health care textiles. At present, cotton fabrics are usedmost widely in the field of costume. It is also one of the most ordinary used fabrics insummer. People are more interested in it because of soft hand feeling, the better moistureand air permeability as well as no electrostatic and comfort clothing performance. Butcotton fabrics have the higher rate of being transmitted by ultraviolet from 280-400nm andweaker performance of ultraviolet radiation protecting compared with the other ones. Suchas natural fibre: wool, silk, hemp. As you know, It is bad for your body to receive muchultraviolet ray. In summer, people wear thinner fabrics, which can be easily transmitted byultraviolet. Much ultraviolet radiation can do damage to skin, even lead to skin cancer. Inrecent years, the ozone layer is damaged and it becomes thiner and thiner. There are twohuge holes on both poles. The ozone layer over our country is also obviously becomingthinner and thinner. As a result, cotton fabrics need the anti-ultraviolet functional finishing. Nanometer science and technology is a high and new technology in recent years. Atthe end of 20th century, nano-technology aroused great attention around the world and hasbecome one of the main subjects of development in the field of science. Those materials,from three dimensions at least one dimension being within nanometer size range (1-100nm) are nanometer materials. Many peculiar properties such as bulk effect, surfaceeffect, quantum-size effect are related to its nanometer size, which have drawn increasinginterest recently. Nanometer TiO₂ and SiO₂ are two of the most important nanometermaterials studied owing to its wide application properties and prospect, such asultraviolet-light shield, fine ceram, semiconductor materials, photocatalytic materials,effect pigment, etc. They are always the interest research topic and more attention are paidto looking for its preparation techniques and application. This paper lays stress on theanti-ultraviolet function of nano-powders in textile reserch. It belongs to a new studydomestically. Few studies are reported about TiO₂&SiO₂ nanometers being used in cottonfabrics. In this paper, I have prepared nanometer TiO₂ and SiO₂ by myself,then, dealt withcotton fabrics with them, after that, tested and analyzed many kinds of clothingperformance. It is vacant in the history that the research of cotton fabrics via theanti-ultraviolet finishing by using nanometer TiO₂&SiO₂. My thesis consists of two sections as a whole. Prartâ…  Preparation of TiO2 and SiO2nanoparticles and the test of their transmission percentage of ultraviolet ray. First, I haveprepared nano-TiO2 and nano-SiO2 via Micoemulsion Approach. Fine decentralizenanoparticles were got through improving the method. Secondly, in the course ofpreparation of nanoparticle, I have invented a method of "eyeballing synthesis"andsearching for parameter concerned. So, I have found optimal prescriptions. At last, I havefound the best ratio of compound nano-TiO2 & nano-SiO2 through the test of Transmissionpercentage of ultraviolet ray. Part â…¡ Cotton fabrics of anti-ultraviolet finishing. Firstly,Three kinds of cotton fabrics were bleached, after that, I have dealt with the cotton fabricsby use of a optimum recipe of anti-ultraviolet finishing liquid and finishing technics. In thecourse of finishing, I have used the best rotio of compound nano-TiO2 & nano-SiO2. Andthen, I have got the anti-ultraviolet cotton fabrics after finishing technics. Finally, I havesummed up the changed disciplinarian of clothing performance between anti-ultravioletcotton fabrics and common bleached cotton fabrics through test and analyse. After thecotton fabrics finishing with compound nano-powder: The draw strength reduces much, thedraw ratio, the Breaking strength work reduce a little; The whiteness value also reduces 10degree; The...