LED Lighting Development and Applied Materials Progress

With the large-scale launch of the LED lighting market, the application of advanced materials has provided strong support for LED's response to the increasingly stringent requirements of general lighting. As the largest and most complete silicone-based light diffusion particle production enterprises in the country, Chung Qi materials, how are their research and development in the field of advanced materials? In the period of rapid development of the LED lighting market, how to deal with the opportunities and challenges faced?

Competition with international giants to promote the popularity of LED lighting

It is understood that Mr. Jiang Wen, the main founder of Chung Chi Material Technology (Shanghai) Co., Ltd., entered the organic silicon industry from September 1995 and has been working for more than 18 years. Among them, the first 16 years have been in the top three silicone companies in the world, including GE's 4 years, WACKER's 4 years, and Dow Corning's 8 years.

“Basically, the whole process has experienced the process of the domestic organic silicon industry being very weak and small, single species, and gradually growing, and the variety is complete.” Jiang Wen told reporters. He said that the domestic organic silicon based raw materials in recent years in terms of quality, scale, the leap is amazing, at present in the entire silicone industrial chain and most of the downstream areas, domestic organic silicon production companies are fully catching up with the traditional international giants.

Mr. Jiang Wen told reporters that the silicone products used in the LED industry mainly include sealants, thermal conductive adhesives for upstream packaging, and organic-based light-diffusing particles for downstream lighting products. In the field of LED sealing in the upstream, foreign companies have been monopolized for a long time and the price is extremely expensive. Products with high refractive index have long sold 6000-7000 yuan/kg, but recently the technology level of related products of domestic companies has progressed rapidly, and the quality has gradually accelerated. Up, and the price is only about 40-50% of the imported products. It is believed that the time for the full replacement of imported products is coming.

Silicone light-diffusing particles used in the LED lighting industry began in the second half of 2009, and it has only been four years since. Chung Qi Materials began research and development in early 2010, basically synchronized with foreign companies. Chung Qi's products also have an absolute advantage in terms of price, and have contributed to a significant drop in the prices of imported products from Japan and South Korea.

Mr. Jiang Wen stated that Yongqi has advantages in many aspects such as raw materials, production technology, production scale, product stability, specifications, cost, application technology, and reaction speed. With the continuous expansion of product scale, he hopes to further expand in the near future. Significantly reduce costs and selling prices, providing the greatest support for the rapid spread of China's LED lighting industry, and also hope to contribute to the development of relevant national standards.

Competitive Light Transmittance and Optical Effect Improve Product Performance With the increasing demand for lighting effects from lighting products, the pursuit of different optical effects is also ever-changing. At the same time, the cost is also required to be lower and lower. This poses some challenges to the application of materials, but it also brings great opportunities.

It is understood that there are two major types of products used by Yong Chung materials for LED lighting: one is a light diffusing agent product, also called a light diffusing particle, which is a micron-sized spherical organic silicone resin, when such a microsphere product is added to a PC In transparent plastics such as PMMA, PM, etc., due to the difference in refractive index between different substances, the light is deflected when passing through the interface between the two types of substances, thereby turning the point light source of the LED glare and glare into a bright and uniform surface light source, and The maximum light transmittance is maintained, making it possible to use LEDs as light sources for general illumination. At present, the silicone light diffusing agent has been widely used in the production of LED bulbs, fluorescent lamps, panel lights, spotlights, and the like.

Mr. Jiang Wen told reporters 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 drop too much, that is, the light efficiency should be as less as possible. The loss suffered.

At the beginning of this industry, inorganic powders such as calcium carbonate, barium sulfate, and titanium dioxide were used as light diffusing agents. Although they can also turn point light sources into uniform surface light sources, the light transmission rate is only about 45%, and it is surprisingly organic. Under the same conditions, the silicon light diffusing agent can achieve a transmittance of >=90%, with minimal loss of light efficiency.

To achieve such an optical effect, it is necessary to control the purity of materials, the refractive index, the spherical regularity, the spherical surface cleanliness, the particle size distribution, and other aspects at the same time. In particular, large-scale and stable batch production can be achieved. Easy.

Mr. Jiang Wen said that Qiongqi has been making unremitting efforts in terms of light transmittance, haze enhancement efficiency, optical effect and cost of the product, striving to maintain the leading level in the world. At present, based on the unique three national invention patents, we have achieved large-scale production of various types of silicone resin-based light diffusing particles in the range of 0.5 μm to 30 μm, and our product technology has reached the international advanced level, replacing Japan and South Korea in a large area. And other imported products.

The other category is environmentally-friendly flame-retardant products. The lampshades of traditional lighting products are mostly glass. Users do not worry that these lampshades will burn due to heat. Now the LED lighting product's lampshade has become a plastic material such as PC, users will naturally have to 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, which is the thickness of plastic shades for most LED bulbs, fluorescent lamps, panel lamps, and spotlights.

Mr. Jiang Wen said that the technical difficulty of environmentally friendly flame retardant products is that they have good flame retardant effect and must maintain high light transmittance, good mechanical properties and processing performance. At the same time, because they are civilian products, they cannot use halogens and other environmentally friendly flame retardant methods. At present, our environmental protection flame-retardant technology is also mainly used for exporting LED lighting products, but the similar requirements of the recent domestic products have gradually increased.

Comprehensively meet customer needs and speed up the market layout

The application of this industry has also begun to change in the near future. Customers frequently propose different combinations of light transmittance and haze. This process requires not only the ability to produce products in a stable and scaleable manner, but also the need for plastic processing, especially for optical applications. Comprehensive knowledge.

According to Mr. Jiang Wen, the Energy Saving Products Division of Chung Qi Materials is a combination of colleagues with different capabilities. They developed a single product range from 0.5um to 30um with dozens of product specifications compared to foreign companies. Most of the products that only offer 2um specifications are becoming more and more obvious. It is very easy to provide targeted solutions according to the specific requirements of customers and greatly shorten the process of new product development for customers.

Regarding the future development, Mr. Jiang Wen stated that since July 2013, Gushing has been the largest domestic manufacturer of silicone resin-based light-diffusing particles with the largest capacity and specifications. So far, there are 2um, 3um, and 5um different types of particles. The light-diffusion particle products of the radial distribution have been tested by foreign customers and will soon be exported. Therefore, we will accelerate the deployment of overseas markets while increasing efforts to promote the domestic market.

In terms of technology, it will use Chungchi's deep accumulation in the synthesis of silicone products and the comprehensive advantages of plastic processing and optics to continue to develop new products together with our customers to meet the ever-increasing demands of customers.