Discussion On Easy Decontamination Finishing Process Of Polyester Cotton Fabric

As everyone knows, Polyester cotton fabric It has good wear resistance and crease resistance, but because the polyester fiber belongs to hydrophobic fiber, it has strong affinity for oil pollution, easy to absorb oil pollution, and it is easy to generate static electricity in the process of wearing, and it is difficult to wash dust. With the quickening of pace of life and the requirement of environmental friendliness, people are required to have "easy to clean" performance, that is, the dry state of the fabric is not easy to be stained. Even if it is stained, dirt, especially oily dirt, is easily washed away during washing. This is usually referred to as "easy decontamination" finishing. In the hotel restaurant, the work clothes of the chef, the staff clothes, such as diesel oil and motor oil often used in some heavy enterprises, are easy to be cleaned and cleaned after easy decontamination. Based on the analysis of the surface properties of polyester cotton fabric, based on the selection of process conditions, the suitable technological process has been determined and the technological conditions have been optimized.

Technology principle. The easy decontamination finishing of polyester cotton fabric is mainly solved from two aspects: first, improving the hydrophilic properties of polyester fiber; two, improving the oil repellency of fibers in air, that is, improving the surface properties of fabrics by chemical finishing, reducing the surface tension of air in the air, so that the fabric has dry oil repellency. When washing, the hydrophilic segments of the easy decontamination finish will be aligned on the fabric surface to make it hydrophilic to produce decontamination and prevent further contamination.

Easy decontamination agent selection. Because fluoropolymer polymers have very low surface tension, with the increase of fluorocarbon chain, the water repellency and oil repellency of the finished fabrics are better. Hydrophilic groups, such as polyethylene glycol and polyether, are introduced into the fluorocarbon chain to make them hydrophilic, and the interlinking group is introduced to make it react with fibers or crosslinking agents to improve the durability of the finishing products. Therefore, we choose fluorine based easy decontamination agent: OIEOPHOBOL. PH=5-8 has little effect on the shade of cotton whitening fabric, but has a more obvious effect on disperse and reactive dyes. Considering the various factors and the requirements of customers, we choose ZSR 50 g/l, 160 degree and 2 minutes as the production conditions of the cart. Fabric selection: T40/C60 20, 14 +98, 56 +67.5 "twill (black).

　　 Color fastness index Analysis: through the comparative analysis of the two processes, we can see that the color fastness index of disperse / reduction process is obviously better than that of disperse / reactive dyeing process. In order to meet the requirements of customers' fastness to color fastness, we adopt the disperse / restore two bath dyeing process. Japan's chemical cleaning agent SRM-65 process conditions selection test. Analysis: Japan's chemical easy decontamination agent SRM-65 is a hydrophilic easy decontamination finishing agent. Its dry oil repellency in air is worse than that in Ciba ZSR. However, oil stains on water fabrics are easy to wash. Considering the influence of various factors such as concentration, temperature and time, we choose SRM-65.

60 g/l, 180 centigrade, 40S as the production conditions of the cart, the product has been tested by the customer to reach the grade 3 or above, and other color fastness indexes also meet the requirements of the customers. Note: before finishing decontamination, all kinds of surfactants on the fabric must be removed, as well as softeners on the cylinders, grooves and guiding cloth, so as to avoid lowering the finishing effect. The effect of easy decontamination finishing on the finished products is obvious, and the production should be prevented in advance.

Polyester cotton fabric passes through Easy decontamination finish It has greatly improved the grade and added value of the products, and has also brought great convenience to people's wear. The products processed by Ciba ZSR are all qualified and hung up after testing. All the indexes of the finished products meet the requirements of customers. So far, a total of nearly one million meters of decontamination products have been produced and good economic benefits have been achieved.