With the large-scale launch of the LED lighting market, the LED industry is facing unprecedented opportunities, and the application of advanced materials is undoubtedly an important factor in promoting the development of LED lighting, providing strong support for LEDs to meet the increasingly stringent requirements of general lighting.
As the largest and most comprehensive manufacturer of organic silicon-based light-diffusing particles in China, what are their developments in advanced materials? In the period of rapid development of the LED lighting market, how to deal with the opportunities and challenges faced? The new century LED network reporter exclusive interview with Mr. Jiang Wen, general manager of Yongqi Materials Technology (Shanghai) Co., Ltd.
It is understood that Mr. Jiang Wen, the main founder of Yongqi Materials Technology (Shanghai) Co., Ltd., has entered the silicone industry since September 1995. The first 16 years have been in the global market. Three silicone companies work, including GE's 4 years, WACKER's 4 years, and Dow Corning's 8 years.
The basic process has experienced the process of the domestic organic silicon industry from the very weak, single variety to the gradual growth and variety. Mr. Jiang Wen talked to the reporter of the New Century LED network. He said that the leap in quality and scale of domestic organic silicon basic raw materials in recent years is amazing. At present, in the entire industrial chain of organic silicon and most of the downstream, domestic organic silicon production enterprises are fully catching up with traditional international giants.
Mr. Jiang Wen told the reporters of the New Century LED Network that the silicone products used in the LED industry mainly include upstream encapsulated sealants, thermal pastes and silicone-based light-diffusing particles for downstream lighting products. In the field of upstream LED sealing, foreign companies have long been in a monopoly position, the price is extremely expensive, high refractive index products have been selling 6000-7000 yuan / kg for a long time, but recently the domestic company's related product technology level is progressing rapidly, the quality has gradually rushed Come up, and the price is only about 40-50 of imported products, I believe that the period of comprehensive replacement of imported products is coming.
The use of silicone light-diffusing particles in the LED lighting industry began in the second half of 2009 and has only been four years since. The Yongqi material began research and development in early 2010 and is basically synchronized with foreign companies. The products of Yongqi Materials also have an absolute advantage in terms of price, and have caused the prices of imported products from Japan and South Korea to drop sharply.
Mr. Jiang Wen said that Yongqi has advantages in many aspects such as raw materials, production technology, production scale, product stability, specification types, cost, application technology, and reaction speed. As the scale of products continues to expand, it is hoped that further progress will be made in the near future. Significantly reduce costs and selling prices, provide maximum support for the rapid spread of China's LED lighting industry, and also hope to contribute to the formulation of relevant national standards.
Competitive light transmittance and optical effects improve product performance. With the higher requirements for lighting products, the pursuit of different optical effects is ever-changing, and the cost is also required to be lower and lower. This poses a certain challenge to the application of materials, but it also brings great opportunities.
It is understood that there are two major categories of products used for LED lighting: one is a light diffusing agent, also known as light diffusing particles, which is a micron-sized spherical silicone resin. When such microsphere products are added to PCs. In transparent plastics such as PMMA and PS, due to the difference in refractive index between different substances, the light is deflected when passing through the interface between the two types of materials, thereby turning the LED glare and the glare point light source into a bright and uniform surface light source, and The light transmittance is maintained to the utmost extent, making it possible to use the LED as a light source for general illumination. At present, such silicone light diffusing agent products have been widely used in the production of LED bulbs, fluorescent lamps, panel lamps, spotlights and the like.
Mr. Jiang Wen introduced to the reporter of the New Century LED Network that the key technology of LED light diffusing agent is how to turn the LED glare and dazzling point light source into a soft and uniform surface light source while the light transmittance can not be reduced too much, that is, the light effect Be as little as possible.
At the beginning of this industry, inorganic powders such as calcium carbonate, barium sulfate and titanium dioxide were used as light diffusing agents. Although the point source can be turned into a uniform surface light source, the light transmittance is only about 45, and the strange silicone The light diffusing agent can achieve a light transmittance of =90 under the same conditions, and the light loss is extremely small.
To achieve such an optical effect, it is well controlled in terms of material purity, refractive index, spherical regularity, spherical surface cleanliness, particle size distribution, etc., especially in large-scale and stable batch production. It's easy.
Mr. Jiang Wen said that Yongqi has been working tirelessly on the light transmittance, haze enhancement efficiency, optical effect and cost of the products, and strives to maintain the global leading level. Based on the unique invention patents of three countries, the company has realized the large-scale production of various kinds of silicone resin-based light diffusing particle products in the range of 0.5 micrometers to 30 micrometers. The product technology has reached the international leading level, and the large area replaces Japan and South Korea. And other imported products.
The other type is environmentally friendly flame retardant products. The lampshades of traditional lighting products are mostly glass. Users will not worry that these lampshades will burn due to heat. Now the lampshades of LED lighting products become plastic materials such as PC, and users will naturally burn. The concern is because it is used indoors after all. Therefore, we have developed a UL94-V0 flame retardant solution that can reach a thickness of 0.9-1 mm, and this thickness is precisely the thickness of the plastic lampshade of most LED bulbs, fluorescent lamps, panel lamps, spotlights, etc.
Mr. Jiang Wen said that the technical difficulty of environmentally friendly flame retardant products lies in the high flame retardant effect while maintaining high light transmittance, good mechanical properties and processing properties. At the same time, because it is a civilian product, it cannot use halogen and other environmentally friendly flame retardant means. At present, our environmentally friendly flame retardant technology is mainly used to export LED lighting products, but similar requirements for domestic products have gradually increased.
Comprehensively meet customer needs and accelerate market layout. The application of this industry has also begun to change rapidly. Customers frequently propose different combinations of light transmittance and haze. This process not only requires the ability to produce products in a stable and stable manner, but also needs to have Plastic processing, in particular, comprehensive knowledge of optics.
According to Mr. Jiang Wen, the energy-saving products division of Yongqi Materials is composed of colleagues with the above different abilities. They developed a series of products ranging from 0.5um to 30um with respect to foreign companies. Most of the advantages are only available in 2um specifications. It is very easy to provide targeted solutions based on customer specific requirements, greatly shortening the customer's new product development process.
Talking about the future development, Mr. Jiang Wen said that after July 2013, Yongqi has become the largest and most complete silicone resin-based light diffusing particle manufacturer in China. So far, there are 3um, 3um and 5um different particles. The light-diffusing particle products with diameter distribution will be exported soon after testing by foreign customers. Therefore, while increasing the promotion of domestic market, we will also accelerate the overseas market layout.
In terms of technology, we will use Yongqi's deep accumulation in the synthesis of silicone products and the comprehensive advantages of plastic processing and optics to continue to develop new products with our customers to meet the increasing demands of customers.
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