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. The quality of domestic products is really less than the imported products, consumers tend to buy or have blindness? This becomes the domestic anti UV products manufacturers the most confused problem.
the quality of domestic products is comparable to that of international
. It is undeniable that Japan has always been in the leading position in the field of UV resistant fabric development. At present, in the international market with anti ultraviolet function exercise high visibility and stable customer base of suits, shirts, hats, umbrellas and other protective equipment from japan.
although the domestic research on anti ultraviolet fabrics is not comparable to that of Japan, the achievements made by domestic researchers can not be underestimated: Shandong giant dragon chemical company recombines ultraviolet absorbent and shielding agent to develop anti ultraviolet finishing agent for cotton fabric; Xiamen Hua Pu high technology industry Co. The nanoscale ceramic cotton textiles developed with ultraviolet, antibacterial and far infrared thermal insulation have been developed, and the clothing made from functional hybrid materials developed by Donghua University can shield 99.7% of the ultraviolet rays, and the protective coefficient of ultraviolet radiation is above 50; the Wuhan Textile University textile laboratory has a permanent anti ultraviolet function. Cotton fiber has been applied for national technology patent and will be used in fabric production. It is expected to achieve the permanent UV protection function of clothing.
, a professor at
of Nanjing University of Technology, pointed out that the quality of the anti ultraviolet products made in China is not worse than that of international products, and the cost is low. The main problem of its poor sales is that the market promotion is not enough and the consumer's knowledge is insufficient, which leads to the disregard of product sales. Five new kinds of
processing technology becoming popular
has nearly 10 years of research experience for anti ultraviolet textiles technical manager of Shandong Xinxin macro Materials Co., Xu Jie said that at present, the domestic conventional ways to improve the textile UV performance roughly 4. The first is to use fiber with good anti ultraviolet properties to produce textiles, such as linen, polyester fiber, etc. Two is to change the fabric structure, such as increasing the thickness and density of the fabric, and the three is to add ceramic particles to the UV line when spinning the textile fiber, and the four is to weave the fabric. After UV treatment, fabric can be impregnated with UV absorber or blocking agent, or UV coating on fabric surface. However, these 4 processes have different degrees of defects in environmental protection, the cost of product performance, durability and so on, if not improved, becomes the production burden in the near future. According to Xu Jie
, magnetron sputtering, electrospinning technology, nanotechnology, plasma microencapsulation and sol gel technique of 5 kinds of technology is the latest international popular anti UV fabric processing technology. It is gratifying that these 5 technologies, domestic manufacturers have the same production capacity.
in contrast with the process of the production process and the cost of industrial development, Xu Jie believes that the electrospinning technology is the best way to improve the performance of anti ultraviolet textiles. Xu Jie said, through the production of electrospinning technique of anti ultraviolet fabric, the shielding rate of more than 95%, can effectively prevent the invasion and damage of ultraviolet radiation on the human body, and is non-toxic, no stimulation, washing fastness. At the same time, this kind of product has no irritation and allergy to skin, and has good moisture absorption and permeability.
can be used to improve the UV protection properties of textiles. The electrospinning process can be divided into spray coating method and direct spinning method. Spray coating method with UV shielding agent in electrostatic spinning liquid, sprayed onto the fabric by electrostatic spinning, anti ultraviolet film forming a layer of nanometer level on the surface of the fabric, achieve 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 agrees with Xu Jie very much. He said that although the degree of industrialization of the electrospinning process still needs to be improved, but its market value is immeasurable, and the research of Nanjing University of Technology, Tianjin University of Technology has made some breakthroughs in key technologies of electrostatic spinning. 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 additive have strong selective absorption wavelength is 290nm ~ 400nm ultraviolet light, can effectively prevent and inhibit ultraviolet penetration. In addition, the additives should have low volatility, good thermal stability, water resistance and water resistance.