The Quality Of Domestic Products Is Comparable To That Of International: Electrostatic Spinning UV Resistant Fabric.

Since May, the temperature has gradually increased, and the sales of UV resistant products such as sunscreen clothing and sunshade have increased.

However, a reporter survey found that consumers are much more keen on imported anti UV products than domestic ones.

Is the quality of domestic products really inferior to imported products, or the blindness of consumers' purchasing tendency? This has become the most puzzling problem for manufacturers of UV protection products in China.

It is undeniable that Japan has always been in the leading position in the field of UV resistant fabric development.

At present, sports wear, shirts, hats, sun umbrellas and other protective products with high visibility and stable customer base in the international market are all from Japan.

Domestic research on UV resistant fabrics is not as deep as Japan, but the achievements made by domestic researchers are also not to be underestimated: Shandong dragon chemical company combines UV absorbers and shielding agents to develop UV resistant finishing agents for cotton fabrics; nano scale ceramic cotton textiles developed by Xiamen Huapu hi tech Industry Co., Ltd. also have anti ultraviolet, antibacterial and far-infrared thermal insulation functions; the clothes made of functional hybrid materials developed by Donghua University can shield up 99.7% of ultraviolet rays, and the UV protection coefficient is over 50; the cotton fibers with permanent ultraviolet resistance function developed by the Textile Laboratory of Wuhan Textile University have applied for national technology patents and will be used in fabric production, which is expected to truly achieve the permanent UV protection function of clothing. Though

Nanjing University of Technology professor Wang Ran pointed out that from the finishing process, the quality of domestic anti ultraviolet products is no worse than that of international products, and the cost is relatively low. The main problem of its poor sales volume is that the marketing is not enough, and the consumers' knowledge is not enough, resulting in the sales volume of products is not ideal.

According to Xu Jie, magnetron sputtering technology, electrospinning technology, plasma

5 kinds of processes, microencapsulation and sol-gel technology, are the most popular anti ultraviolet fabric processing technology in the world.

It is gratifying that these 5 technologies, domestic manufacturers have the same production capacity.

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Xu Jie, general manager of Shandong Hong Xin new materials Co., Ltd., who has nearly 10 years of research experience, said that there are 4 ways to improve the UV protection performance of textiles in China at present.

One is to directly select fibers with better UV resistance properties as raw materials to produce textiles, such as linen and polyester fiber; two, change the fabric's fabric structure, such as increasing the thickness and density of fabrics; three, add ceramic particles to reflect the ultraviolet rays when spinning the textile fibers, so as to achieve the effect of UV protection; four, finish the UV protection finishing of fabrics, such as coating the fabric with UV absorbers or blocking agents, or UV coating on the fabric surface.

After comparing the production process and the cost of industrial development comprehensively, Xu Jie believes that the electrospinning technology is the best way to enhance the ultraviolet resistance of textiles.

Xu Jie said that by electrospinning

The UV resistant fabric will have more than 95% shielding efficiency. It can effectively prevent ultraviolet rays from attacking and injuring the human body, and is non-toxic, non irritating and washable.

At the same time, this kind of product has no irritation and allergy to skin, and has good moisture absorption and permeability.

The electrospinning processes that can be used to improve the UV protection properties of textiles can be divided into spray coating method and direct spinning method.

The spray coating method is to add ultraviolet shielding agent into the electrospinning fluid, spray it onto the fabric through electrospinning, and form a nanometer level anti ultraviolet film on the surface of the fabric, so as to achieve the anti ultraviolet effect.

The direct spinning method is to add UV resistant finishing agent into the electrospinning fluid, and directly produce fabric with anti ultraviolet effect.

Xu Jie said that the cost of the process is not the highest, except for the products that are prepared.

Wang Ran agreed with Xu Jie very much.

He said that although the industrialization of electrospinning technology needs to be improved, its market value is immeasurable, and researchers at Nanjing University of Technology and Tianjin University of Technology have made some breakthroughs in the key technology of electrospinning.

Wang Ran also said that when preparing UV resistant textiles through electrospinning, special attention should be paid to choosing suitable UV protection additives.

The selected additives need the ability to selectively absorb ultraviolet radiation with wavelengths of 290nm to 400nm, so that UV penetration can be effectively prevented and suppressed.

In addition, the additives should have low volatility, good thermal stability, water resistance and water resistance.