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Special glass gives you a shock
(Summary description)Special glass usually is to point to besides flat glass and glass of household utensils outside, use refined, high purity and new-style raw material,
Special glass usually is to point to besides flat glass and glass of household utensils outside, use refined, high purity and new-style raw material, use new technology, new equipment, new craft, pass the special condition such as light, electricity, magnetism, heat and biochemistry to act and form the glass that has special function or special use. At present, the excellent characteristics of special glass materials have attracted much attention, and its research and development and production level has become one of the indicators of a country's material development level.
In 2017, the capacity utilization rate of China's plate glass industry was only 69%. After the government introduced measures to "curb overcapacity", it rose to 73.8% in 2018, a slight improvement, but still lower than the international normal experience value of 81% ~ 82%. Special glass development and market problems, through technical innovation to the high-end, green, service industry, has become a new point of enterprise innovation. During China's 13th five-year plan period, the development of new materials industry will promote the transformation and upgrading of building materials industry, which will be of great benefit to solving overcapacity and improving productivity.
In China, the preparation technology and application fields of special glass are as follows:
1 manufacturing technology of windscreen and side window glass for high speed emu
China has developed a new series of test and verification methods and equipment and formed a standard, providing technical support for guiding the design and preparation of glass structure of new car models, established a supporting production line for whole vehicle glass, and developed a reliable verification method for high-speed bird impact and hard object impact tests. Test methods and equipment have been developed and standards developed for emergency escape. Formed windscreen and side window inspection and evaluation technology, and built a complete set of glass production line. The products have been applied to various high-speed trains such as CRH380 and CRH350, which have played an important role in promoting the safe operation and healthy development of high-speed railways, and also provided support for the implementation of the "One Belt And One Road" strategy and the promotion of high-speed railway construction and technology export.
2 sandwich solar reflector technology
Reflector (CSP condenser) is the core component of solar thermal power generation condenser. Its preparation technology is monopolized by a few foreign companies with high technical barriers. Driven by the market demand of green energy development in China, building materials institute has developed a new type of laminated mirror, which is different from that of foreign countries. The sandwich reflector has strong resistance to wind pressure and small elastic deformation under wind load. The back paint of the mirror is protected by the back panel, which can extend the service life of the strong uv environment. The technology of precise hot-bending forming, chemical strengthening of ultra-thin glass and special interlining and side sealing is optimized and integrated to form a complete set of preparation technology and mass production capacity of interlining solar mirrors. The product market adaption ability is strong, can be used for the trough type, the dish type, the tower type, the Fresnel type, the concentrated light photovoltaic and so on the photothermal power generation system, has the broad market prospect.
3. Complete preparation technology and series of large size and high uniformity optical quartz glass
Quartz glass has excellent performance and is the ideal window and lens material in aerospace, aviation, nuclear technology, optical detection and other fields. Due to its sensitive application field, foreign countries have imposed technology blockade and high-end product embargo on China. Building materials institute invented vertical chemical vapor deposition to prepare quartz original weight and developed high temperature homogenization and remelting, precision annealing and related testing technologies, forming a complete set of technology and equipment with independent intellectual property rights. Batch production the uniformity of 2.1 x 10-6 quartz glass, made Φ 600 mm lens and Ф 1400 m reflector, has been in the fields such as aerospace, nuclear technology, laser engineering application. In addition, the ultra-pure quartz glass substrate with the characteristics of full spectral transmittance is also developed, which is resistant to cosmic ray irradiation, low uv transmittance and high visible light transmittance and uv filtering resistance. It has been applied in high precision inertial navigation system and shenzhou spacecraft, chang 'e-satellite, beidou navigation system, etc.
4 preparation and coating technology of series infrared glass
As a window and lens, infrared glass is widely used in infrared detection and thermal imaging. Due to the sensitive use of the products, the foreign countries have imposed technical blockade and high-end product embargo on us. Building materials institute has made a number of inventions and technological innovations in multispectral glass formula design, vacuum melting process and forming technology, etc., forming series of infrared glass products such as calcium aluminate, germanate and sulfur series, and coating the glass surface with infrared anti-reflection, hard protection, electromagnetic shielding and other functional films. The overall technology has reached the world advanced level. Built a series of transparent infrared glass research and development platform and batch preparation capacity.
Preparation technology and application of light metal surface vitrification
Based on the high strength, light weight, good thermal conductivity of beryllium metal and the excellent optical properties of special glass, the glass is laminated on the surface of beryllium metal, and the mirror is prepared by precise optical processing and coating. The mirror is the core component of the infrared remote sensing camera scanning mirror, which is mainly used in the high-end aerospace optical remote sensing camera. Big caliber reflector has been successfully applied to the resource 04 number one star, 28, 14 remote sensing, remote sensing, such as satellite and the user appraisal integrated performance reached the international advanced level, marks our country has become one of the world except the United States, Russia, the third countries with the technology and built the only large area glass with high light metal laminated technology development platform.
6 lightweight high strength functional aviation glass technology
The special hyperboloid hot-bending, chemical toughening, electrothermal coating and other key glass processing technologies were integrated to produce the aviation glass with the largest single area (1.15m2) and the thinnest thickness (9mm) in China, and the overall weight was greatly reduced by combining with the frame of carbon fiber composite material. Has been used in a variety of helicopters.
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