The second session of the nano-materials in coatings applied technology Development Seminar Highlights


Nano-materials with small size effect, surface effect, quantum size effect and other special nature, added to the coating can improve the impact resistance coating, anti-aging, anti-corrosion, anti-UV properties, and get some new special features, such as the self-cleaning, antistatic, flame-retardant and so on. Therefore, the nano-composite coating development and application in recent years has been people's attention, research institutes, tertiary institutions have increased science and technology investment, businesses this as a selling point, consumers have doubts. A few days ago by the National Paint Industrial Technology Research Center, paint industry, Productivity Promotion Center, National Coatings Industry Information Center and other organizations co-hosted the second session of the application of wholesale medical supplies in coatings technology development seminar, dedicated more than 100 guests listened to the College professors, research specialists and business representatives at the nano-composite coatings on the latest research results and application reports. To enable more readers to understand its progress, now part of my statement Zhaibian below for reference.


Used as a paint additive types of nano-particles dispersion too few yet to be developed

WU Li-Min, Fudan University, doctoral tutor in recent years, organic-inorganic (O / I) the rapid development of nano-composite coating has become the paint area, one of the most active research directions, their preparation methods were divided into three categories: nano-particles filling method, sol a gel and self-assembly method. The existing problem is that for filling method, in addition to nano-silica, the use of other nano-powder is also not readily available and transparent nano-composite coating. In addition, in some cases, a larger amount of nano-particles of paint to get good performance, which will increase the production cost of paint, because most of the nano-particle resin expensive price. Nano-particles scattered from the point of view, choose the surface modification of nano-particles and nano-particles dispersion of Preparation is a good approach. At present, the market has been used as a paint additive dispersions of nano-particles to sell. However, as coating from solvent, tree-looking, cross-linkers such as composition, complex composition, we can not find a better universal with a slurry of nano-particles. Therefore, the need to develop a wider variety of nano-particle dispersion in order to meet the needs of the different coatings. Rong-Jiao-gel process is an ideal preparation of a transparent coating method, nano-particles used in the hybrid sol-gel method to prepare high-performance coatings or functional coatings has become a hot topic of current research.


Nano-technology enterprises can not ignore the Application Technology

Nano Science and Technology Co., Ltd., general manager of Beijing Capital Xian Cai-jun nano-materials in various fields, the application of almost all the great prospects of nanotechnology in the world are increasingly widespread concern. However, in our country through the hype of previous years, many people in nanotechnology seems to have lost patience and confidence, and even to talk about nanotechnology and discoloration. I think the most important thing is that we can not ignore the application of nanotechnology research enterprise, and only truly developed with the technical content of products, to be invincible.


It should be said, nanotechnology and nano-technology is not one thing, science and technology in a broad sense, the techniques and methods. Nano-electronics, nano-biotechnology is a high-tech field, are still far away from industrialization, it was predicted to be about 20 years to achieve, while the nano-materials is not, has been partially entered the industrialization stage, especially in the application of paint to achieve using high technology to transform traditional industries goals.


The United States in nanotechnology development, there are many places where we can learn from, first, to establish a relatively perfect system of national nanotechnology strategy and operating systems, government investment and business investment have gradually entered a reasonable stage; the second is to determine the basis for research focus areas, clear focus on the development of applied research and development direction. In contrast, we did not form the theoretical basis, evaluation system has not been established, and some enterprises use the concept of such an immature environment of abuse, coupled with basic research and technology application phase out of touch, many people prepared to make the investment, the investment application into the less. We are very fortunate the past few years the use of technology clients stick to the road, they make little money but did not lose money, at least more than 80% of the domestic production of nano-coatings can be used by enterprises we have developed nano-additives.


China's air purification levels of the world's leading paint technology

Beijing University of Chemical Technology, Associate Professor XIA are present, the domestic and international research on the Nano-photocatalytic coating many reports. Japan, the United States made a lot of work in this area, and some technology has entered a practical stage. China in recent years have centered on nano-titanium dioxide photocatalyst has conducted research in the anti-bacterial sterilization, air purification, etc. the results paint and technological level has been a world leader.


Beijing University of Chemical Technology in 2003 completed a nano-TiO2 photocatalyst on the development, production and applied research, the obtained particle size of nano-TiO2 photocatalyst were 20nm below, after the effective doping and advanced calcining process obtained in nano-Ti0: Photocatalyst powder for acrylic exterior latex paints, the bactericidal antibacterial properties of 90% ~ 99%, decomposition of the capacity of formaldehyde 83% ~ 99%, and resistance to artificial aging to 1500h. And after the effective doping, the photocatalyst in natural light and dark light, can also play an excellent function.


Yue This is a research and development production and application of nano-TiO2 photocatalyst the best country, but until now, had not been seen with suction catheters to acrylic acid copolymer as film-forming material within the outer wall paint, reason, or no Nano-TiO2 Photocatalyst can be resolved on the film-forming substances in use destructive effects of acrylate copolymers. And the same as anatase titanium dioxide, nano-TiO2 photocatalyst because of anatase, it is difficult for exterior paint or outdoor use products.


Nano-TiO2 photocatalyst used in the performance of latex paint, in particular the ability to break down much lower than the triphenyl TiO2 photocatalyst composed of nano-structured coating, or spraying liquid, because the process of preparation of milk takes the paint by adding nano-TiO2 are mostly to other paint covered not only affects the adsorption efficiency, but also reduced the photocatalysis. The latex paint by adding the amount of nano-materials, there is a limit, because of the ultra-nano-surface effect and hydrophilic, once the nano-materials by adding more than 6% ~ 8%, the phenomenon of plastic coating appears to have lost mobility. Therefore, by increasing the nano-Ti0: Photocatalyst amount is still limited, and the solution to the problem is a comprehensive science, shall nano-materials preparation and preparation of film-forming material set in one, through the surface tension of the poor for self-stratification to achieve the purpose of self-assembly.


Nano-composite coating to achieve the industrialization of the difficulties and the key

Hi-Tech New Material Co., Ltd. of Guangdong Li Xiong Wenzhong, chairman of nano-composite coating to achieve the industrialization of the need to address three issues with attention, first, promote awareness and industry standards should be combined. The sense of the word; second is a combination of scientific research and professional applications, that is worthy of the name; 3 is a fair combination of competition and righting suppressing false impression that the name into its on. The difficulty and the key lies in breakthroughs in nano-powder in a number of large-scale preparation of the key technology to realize the stabilization of nano-powder production; breakthrough in nano-powders application-specific key technologies involved in truly reflect the effect of the special structure of nano-powder to give the related to end-product performance and new features.


Nano-ceramic films special coating used successfully in anti-corrosion oil pipeline

Shunde Long SAIF special coating, Senior Engineer, Institute relaxation how to effectively solve underground crude oil pipeline caused by corrosion of urine drainage bag, crude oil crisis in the world today to ease and accelerate the development of the energy industry's up with the century-old problem. In order to overcome this century-old problem, countries are striving to study various proper solution. For example, the development of Ti-containing polymer coating, metal thermal spraying hot-dip plating, alloy infiltration plating surface treatment, alloy nano-composite coatings technology, used for oil and gas fields to open the pipeline facilities and production equipment, storage and transportation protection, are has played an active and effective role, extending the useful life of equipment, reducing production and maintenance costs and improve the economic efficiency of enterprises, vigorously promoted the oil industry to flourish.


Nano-composite polymer modified with nano-ceramic film technology to prepare special paint, oil pipeline corrosion in the oil field test was successfully applied, effectively preventing the coating in high temperature and pressure of the strong penetration of water vapor corrosion in harsh environmental conditions corrosion-resistant chemical media, high pressure flow of gas and mud washed sand abrasion and a variety of impurities fouling phenomenon of particle deposition played to raise crude oil, natural gas pipelines to adopt the life and efficiency, reduce costs and win-win purpose of improving efficiency.


In order to test the paint coating performance, we take oil pipeline currently used for pipe anti-corrosion coatings and anti-corrosion coatings made several test compared test results from the analysis of natural drying of organic titanium coatings, polyurea elastomer coating hot oxygen aging test, tensile strength, tear strength did not fall but rise, elongation at break of the reasons for the decline may be in the high-temperature environment for the coating of the ripening process, so that the extent of cure more completely, resulting in rigidity enhanced to reduce the sake of flexibility. Only nano-modified ceramic membrane coating through 150 â,,ƒ, 30MPa high-temperature high-pressure hot steam penetrating simulation.