Reasons For Antibacterial And Mildew Resistance Of Silk Textiles

Silk, as underwear and shirt, is one of the most comfortable and high-grade fabrics. Its amino acid residues of protein peptide chain have moderate antibacterial properties, and also a hygienic textile fabric.

But because silk is itself a protein fiber, it is a good food for mold and bacteria.

When the relative humidity is above 85, the temperature is 5~50 degrees, and the pH value is less than 5, the mold is easy to propagate on the silk fiber, and the pH value is more than 6, and the bacteria are most likely to grow.

Silk is rich in water, or after scouring, there are more residual starch in sericin, soap, oil or printed silk. When it is wet and hot, it will easily breed mold and bacteria, resulting in degradation of protein fiber and chain breaking.

There are many kinds of molds that cause silk fabrics to be mouldy, such as Aspergillus niger, Penicillium citrinum, Penicillium grayle, clasporidium, Aspergillus, crescent, Mucor, Neurospora, Trichoderma and so on.

When growing Aspergillus niger on silk fabric, its spores mass is black, resulting in black silk fibers, while Penicillium citrinum is yellow, Penicillium grayicum is green, and spores are brown.

In the process of metabolism, ethylene glycol, citric acid, oxalic acid, lactic acid, acetic acid and so on are generated, resulting in stench. The fabric temperature rises, the gloss decreases and mildew spots appear. Therefore, during the storage, pportation and pre-sale storage of dyed fabrics, molds must be added to prevent moldy treatment, so that mold can not breed.

Easy to breed in

There are ten kinds of bacteria, such as Staphylococcus aureus, Escherichia coli, enteritidis, Pseudomonas aeruginosa, Trichophyton ringworm, Trichophyton rubrum and so on. Some of the bacteria on silk fabrics come from the polluted environment, while others are from the infected body or skin.

Therefore, after

Finishing with mildew inhibitor can make silk fabrics more hygienic.

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TPE (based on SEBS substrate) conventional mixing system, its flame retardant grade is HB (can burn). But with the expansion of application fields, the performance requirements of TPE are becoming increasingly demanding. The emergence of flame retardant TPE makes TPE mature in the fields of electronic materials, wires and cables. In traditional process, the key raw material used for flame retardancy is halogen, but after burning halogen, it releases dioxin gas. It causes great pollution to the environment. The international apple, DELL, SONY, Samsung and other large enterprises all discharge the prohibited halogen containing flame retardant schedule.

In recent years, the development of halogen-free flame-retardant TPE in China has been in full swing. Although many TPE manufacturers in China claim that halogen free flame retardant TPE materials can be used in the field of electronic wires, because halogen free flame retardant TPE has higher requirements on Flame Retardancy for special applications of blending and materials, the formulation and technology of TPE blending materials are strictly concerned. In order to get mature formula and technology, researchers need to constantly sum up and improve their thinking. Therefore, although TPE in the industry has produced halogen free flame retardant TPE signs, it is only a card for speculation of their own enterprises. Near

The problems faced by the domestic flame retardant TPE market are:

1. big demand and tight supply.

As mentioned above, there are not many enterprises that can produce halogen-free flame-retardant TPE (especially for wire extrusion) in China, but the demand is increasing year by year. However, in recent years, many TPE enterprises have focused on the research and development of flame retardant TPE materials, and believe that it can promote the further development of the flame retardant TPE market.

2. users have high cost of raw materials.

At present, the price of halogen-free flame-retardant TPE materials in the domestic market is 45~60 yuan. This is not a problem for domestic brand enterprises because of the high added value of their products.

But for domestic downstream small and medium-sized enterprises, the cost is still relatively high and the cost pressure is relatively large. The halogen-free flame retardant TPE blending system with relatively low R & D cost can hold a large flame retardant TPE low end market.

3. certification problem

Downstream users in the purchase of halogen-free flame retardant TPE, without exception, require suppliers to provide flame retardant TPE materials halogen free reporting certification and UL certification. Usually a halogen free and UL certification, the cost of a year to hundreds of thousands of. Therefore, from a supplier has two certification reports to determine its halogen free flame retardant TPE product quality or R & D level, because a halogen free flame retardant TPE is not very familiar with, no market of raw material enterprises usually do not blindly invest in costly inspection fees.