Silibase is one of the leading & professional manufacturers specialized in producing all kinds of SILICONE BASED new materials.
Silibase technique team always focus on quality first and insist on developing new products.
Silibase people will serve you the best before and after sale.
Dec 4, 2019
During the process of natural material cycle, bacteria are extremely widespread, and fiber fabrics will inevitably attach a lot of bacteria, the number of which depends on environmental conditions and fiber types, ranging from 103 / cm2 to 108 / cm2. According to statistics, there are about 10 to 50 million bacteria per gram of cotton fiber. If the conditions are appropriate, these bacteria will multiply quickly. On dirty clothes with a lot of sweat stains, bacteria can grow more than 10 times after 24 hours. These bacteria can cause skin allergies in light, and endanger human health in severe cases. For this reason, the desire of humans for health and comfort has been increasing, and antibacterial fabrics have developed rapidly to meet the needs of society as hygienic functional fabrics and health functional fabrics.
The antibacterial finishing of the fabric can obtain antibacterial textiles, and the finishing usually adopts the pad-drying process. Some antibacterial agents can also be used in the same bath with dyeing to enhance the color fastness of the fabric. At present, more chitin antibacterial agents used on the market are mainly used on cellulose fibers, and the active groups they carry can form covalent bonds with the hydroxyl and amine groups on cellulose fibers to form a strong bond. It destroys the cell wall of bacteria. Because the intracellular osmotic pressure is 20 to 30 times that of extracellular osmotic pressure, the cell membrane is ruptured and the cytoplasm is leaked. In this way, the metabolic process of the microorganisms is terminated, and the microorganisms cannot grow and reproduce. Organic silicon quaternary ammonium antibacterial agents are a type of antibacterial agents that are widely used in polyester products. These products enter the holes of polyester fibers and attach firmly to the inside of the fiber at high temperatures. Bacteria, fungi and mold on fabrics keep the fabrics clean and prevent bacterial regeneration and reproduction.
Antibacterial textiles are divided into dissolution type and non-dissolution type. Antibacterial agents on dissolution type textiles are easy to precipitate in aqueous solution, while non-dissolution type is difficult to dissolve. Antibacterial fabrics are classified into ordinary antibacterial fabrics and high antibacterial fabrics according to their antibacterial efficacy. The CAS 115-2005 "Health Care Functional Textiles" jointly issued by the China Standardization Association and the China Health Care Association gives evaluation indicators of different types of antibacterial fabrics.
CAS 115-2005 "Healthcare Functional Textiles" provides an antibacterial detection method for antibacterial fabrics. According to the legality of halo circles, it is determined whether the antibacterial material is a dissolution type antibacterial fabric. In order to prevent the interference of floating chemicals remaining in the antibacterial fabric during processing, the fabric samples used for the test should be tested after washing once according to the regulations. Take 5 ~ 6 pieces of standard blank samples, antibacterial fabric samples or non-antibacterial similar fabric samples that have been washed once. A culture medium is built in the plate, and the sample is flatly adhered to the medium coated with the bacterial solution, the plate is inverted, and the culture is carried out in an incubator at a certain temperature and time according to the species. The width of the inhibition zone is measured to determine whether the sample is a dissolution-type antibacterial fabric. Do at least three parallel tests on the same sample and take the average. The width of the inhibition zone D> 1mm can be determined as a dissolution type antibacterial fabric; if the width of the inhibition zone D is less than 1mm, it can be determined as a non-dissolution type antibacterial fabric.