The Application Of Flame Retardant Containing Boron And Nitrogen For Cotton Fabrics

Cotton fiber has high moisture absorption performance, excellent properties of dyeing and relevant ecology. Cotton fiber has been widely applified in the textile industry. But in all kinds of textile fibers, cotton fiber is one kind that owns the danger of burning. Not only its burning speed is high, it also has big combustion-supporting effect. The fire caused by cotton fabric has threatened the safety of people’s life and property. A large number of textiles and indoor decorations including carpets, curtains, wallpaper and so on, which are all easy to bum. In order to give these fabrics the reliable function of fire retarding and not lose cotton fiber’s comfortable and beautiful style at the same time, researchers should do fire-resistant finishing for ensuring the certain safety factor. Cellulose fiber with flame retardancy is an important part of flame retardant products, and its development and application are widely concerned about in China and abroad.The most commonly used elements with flame retardant effect contain nitrogen, phosphorus, antimony in group of VA, chlorine, bromine in group of ⅦA, boron, aluminum in group of ⅢA, titanium, zirconium in group of IVB and so on. The traditional flame retardants being used to cotton fabric are mainly phosphorus flame retardants and flame retardant agents containing halogen. The performance of these kinds of flame retardants is good, but these flame retardants can make the fabric color, produce formaldehyde and have the problems of odor and toxicity. While the flame retardants containing boron have become one of remarkable varieties of flame retardant agents, with the characteristics of excellent flame retardancy, low toxicity and smoke suppression.The research of the materials of polybasic acid as finishing agents shows that the molecular of polybasic acid compounds containing two or more adjacent cis-carboxyls can react with cellulose fibers. There have been reports about crease resistant finishing, which show that butane four acid (BTCA) is recognized as the best one of polybasic acids crease-resist finishing agents. This paper introduces the research that ethylenediamine tetraacetic acid disodium, citric acid and polyamines material containing active group are as finishing crosslinking agents, expecting ethylenediamine tetraacetic acid disodium, citric acid and polyamines material containing active group can form chemical bonds with cotton fibers. The nitrogen atoms with the characteristic of rich electronic structure and the boron atoms with empty track can form coordination bonds, and these maybe also can produce crosslinking reaction with flame retardant agents containing boron. In this paper, the application of flame retardant containing boron for cotton fabric is studied, and the process of the flame-proof treatment is optimized. Then this paper analyzes the structure of the fabric through electronic scanning electron microscopy (SEM), infrared spectrum (FTIR), element analysis and other means. The results show that, the finished cotton fabrics have excellent flame retardancy, little strength loss and whiteness loss, water resistance being a bit poor. The research shows that the development of new environmental flame retardants to be used to cotton fabric through the cooperative flame retardant containing boron and nitrogen has the significant of further research.