In the past 20 years, China's economy and urbanization have developed rapidly, the electromagnetic environment in the urban space has become more complex, and many new phenomena and new problems have emerged. Mainly: (1) as a result of urban development and expansion, some radio and television stations and wireless communications transmitter stations are surrounded by residential areas, local residents living areas to form a strong field; (2) mobile communications technology (including mobile communications, paging communications, trunking professional network communications) is developing rapidly, the city's high-rise buildings on the erection of a large number of mobile communications transmitter stations, these sources of electromagnetic radiation, although the power is not large, but in the urban area, the electromagnetic radiation source in the urban area is not very high, making the city high altitude. Blossoms everywhere, so that the city's high altitude electromagnetic wave field strength enhancement, in addition to many microwave directional antennas, satellite antennas and short-wave antennas; (3) with the increase in urban electricity consumption and the implementation of power grid renovation project, 110kV and 220kV high-voltage substations into the city center, or indoor or outdoor, or ground or underground, causing panic and complaints from neighboring households; (4) urban transportation (car, (4) the rapid development of urban transportation (automobile, tram, subway, light rail, etc.), electromagnetic noise caused by the rising trend; (5) personal wireless means of communication and household appliances increased, the electromagnetic energy density of the small family environment increased, the indoor electromagnetic environment and the outdoor electromagnetic environment into one, the total amount of electromagnetic environment in the city is constantly increasing.
Electromagnetic radiation refers to "the phenomenon of energy in the form of electromagnetic waves emitted from a source into space", and the electromagnetic environment is "the sum of all electromagnetic phenomena that exist in a given place". Deterioration of the electromagnetic environment not only on people's daily communications in the human information society today, computers and a variety of electronic systems to cause harm, but also to people's physical health to bring the threat. Electromagnetic radiation is difficult to be perceived because it is invisible and intangible. Electromagnetic radiation damage to biological muscle, as early as 20 years ago, experts have been in the report completed over a period of nine years, pointed out that: millions of people due to long-term exposure to electromagnetic radiation from cables and household appliances, faced with the risk of cancer and degenerative diseases are increasing, high-frequency electromagnetic waves on the biological body cells, the nervous system, the circulatory system, immunity, reproduction and metabolic function has a very strong radiation It has a long-term potential threat and impact on the public body, and can even cause catastrophic consequences to household appliances, medical equipment, military facilities, and strong interference in aviation. The U.S. Environmental Protection Commission after many years of research found that long-term living in very low-frequency electromagnetic fields (such as industrial frequency 50Hz), may lead to the occurrence of certain cancers in humans. With the introduction of various household appliances into thousands of households, people contact and exposure to extremely low-frequency magnetic fields generated by refrigerators, electric blankets and other household appliances gradually increased, the potential harm gradually increased.
With the deterioration of the electromagnetic environment in China, the level of electromagnetic radiation in residential and office buildings has increased significantly. Following the air pollution, water pollution and noise pollution, electromagnetic radiation has become China's fourth source of pollution. In Beijing, Shanghai, Guangzhou, Shenzhen, Shijiazhuang and other places have occurred a number of electromagnetic radiation disputes. At present, China's electromagnetic radiation environmental conditions equivalent to the 1960s water pollution, air pollution, now we need to strengthen the research, save for a rainy day, if the electromagnetic pollution to the point where the environment can not tolerate, and then want to develop the economy will be difficult. For this reason, electromagnetic pollution prevention and control research is imminent.
2.1.2 In the face of deteriorating electromagnetic pollution, in order to effectively reduce electromagnetic radiation on the human body and equipment, people have used many methods, including research and development of new materials to absorb electromagnetic waves more and more attention is being paid to the customer's resources are extremely rich.
2.1.3 Initial investment is smaller, less risky, get started quickly, cut into the high-end market cycle is short.
2.1.4 Mature technology, no need for expensive R&D and patent fees.
2.2 Project development plan: (omitted)
Second, the technical aspects
1. Basic principles
1.1 The project and the product is a kind of electromagnetic wave absorption functional materials, its principle and performance is similar to the U.S. invisible aircraft coatings, which is made by the adhesive added to the absorbent with a specific dielectric parameter made of absorber properties of absorbent to determine the absorption of electromagnetic waves of the coatings, it is similar to the United States of America stealth aircraft coating. Absorption of electromagnetic wave performance, it uses the principle of electromagnetic energy conversion, the material to absorb electromagnetic waves, does not reflect and cause secondary pollution, anti-pollution coverage bandwidth, absorption of materials with excellent performance, without any toxic side effects, non-radioactive, producible, inexpensive, highly competitive. With the existing shielding materials have essential and historical breakthroughs, is a clean, completely eliminate electromagnetic wave pollution of high-level means. The original only used in the military field, the world only a few advanced countries in the United States have, the development of civil field is unprecedented, is the international and domestic governance of electromagnetic pollution of the cutting-edge technology.
1.2 The main production equipment testing instruments (omitted)
2. wave-absorbing materials series product categories
2.1 wave-absorbing coatings (environmentally friendly green ecological coatings)
2.1.1 wave-absorbing organic coatings
2.1.2 wave-absorbing inorganic coatings
2.2 industrial series products
2.2 2.3.1.2 Computer radiation protection series
2.3.1.3 Appliance radiation protection series
2.3.2 Human body protection series
2.3.2.1 Card reduction
2.3.2.2 Wearing series
2.3.2.3 Clothing series
3. Patents
3.1 Patent
3.1.1 Anti-electromagnetic radiation special composite material 03159560.X
3.1.2 Wave-absorbing environmentally friendly cell phone 20031011393
3.1.3 Absorption of electromagnetic waves of the special composite material 200410034537.6
3.1.4 Absorption of microwave heating material manufacturing method and its application 200410011646.6
3.1.4 Absorption of microwave heating materials and their Application 200410011646.6
3.1.5 Microwave leakage protection adhesive 03159588.X
3.1.6 Radiation-free anti-interference shielding line 200510007141.7
3.2 Utility model patents
3.2.1 Mobile phone electromagnetic radiation protection articles
3.2.2 A packaging item that can eliminate electromagnetic radiation
3.2.3 A multifunctional wallet that can protect against electromagnetic waves
3.2.4 A promotional item that can eliminate electromagnetic wave pollution
3.2.5 A multifunctional mat that can protect against electromagnetic waves
3.2.6 A multifunctional belt that can protect against electromagnetic waves
3.2.7 A kind of computer camera with the function of eliminating radiation
3. 2. 8 A kind of glasses footwear that can protect against cell phone radiation
3. 2. 9 A kind of anti-electromagnetic radiation apron
3. 2. 10 A kind of absorbing and eliminating the electromagnetic wave pollution of the curtains
3. 2. 11 Absorption of microwave heating items
4. New technology
The principle of wave-absorbing materials is a process of energy conversion, through a large number of tests, it was found that it has another use. It can absorb microwaves and microwave energy quickly converted to heat, its heating efficiency is very high, can control the composition of the material and processing technology to control its heating efficiency, so as to control the temperature of the microwave heated objects. Widely used in: industrial microwave heating elements (ordinary household microwave oven in 2 minutes can melt the glass, can exceed 1000 ℃), microwave baking tray with heat conversion materials, microwave smelting, microwave incineration, other microwave heating components. The absorption heat generation efficiency of the material tested by Midea, Grants, Sanyo has exceeded that of the Japanese material.
Test results: the baking dish on the base plate, the Japanese Sanyo baking dish maximum temperature of about 200 ℃, lower than the limit of Teflon use temperature of 250 ℃, while the domestic baking dish of the maximum temperature of 285 ℃, higher than the limit of Teflon use temperature of 250 ℃.
5. Production technology and process maturity
At present, domestic and foreign wave-absorbing coatings for civil band applications or blank spots, (military band wave-absorbing coatings applications in the United States, France has precedents) the use of the principle of wave-absorbing civil series of products we are the first, adhesive board class wave-absorbing materials can be processed coils is the first in the country, the wave-absorbing materials, wave-absorbing coatings, the core technology of the material is the matching, the core technology is the material, the wave-absorbing materials, wave-absorbing coatings. Production process is simple, processing equipment are general equipment, one-time investment is small.
Three, the market
1. Domestic and international industry development trends
Gulf War, the United States first appeared invisible aircraft, the domestic first by the National Defense Science and Industry Commission to organize the relevant scientific research colleges and universities to address the wave-absorbing materials project, in 1993-1996 we were the first to be in the radar wave absorption band has been achieved in the vehicle radar 40 meters of military targets, bomber radar 400 meters of military targets. Military target stealth technology, civil wave-absorbing rubber sheet products in the country we are the first to launch 3 years ago, wave-absorbing coatings, wave-absorbing materials for civil protection series is currently the only one we are doing. With the discovery of wave-absorbing materials, a variety of products will come out, thus replacing the current traditional, backward metal materials to protect against electromagnetic wave pollution methods, with the increase in the amount of information, the frequency range is also broadening, the advantages of wave-absorbing materials are becoming more and more significant its characteristics.
2. Domestic and foreign markets
Wave-absorbing coatings have been far beyond the application of military invisible and anti-invisibility, confrontation and anti-resistance range, more widely used in the human body safety and protection, communication and navigation systems, anti-electromagnetic interference, security information confidentiality, to improve the performance of the whole machine to improve the signal-to-noise ratio, electromagnetic compatibility, and so on many aspects. Wave-absorbing coating is able to absorb the electromagnetic wave energy projected onto its surface, and through the loss of materials into a class of thermal energy materials (energy conversion principle). In a variety of electromagnetic radiation protection materials, coatings with its convenience, lightweight, does not occupy space and integration with the substrate and many other advantages to become one of the leaders, because, wave-absorbing coatings can absorb excess electromagnetic waves, so as to not only reduce the interference of stray waves on their own equipment, but also to effectively prevent the harassment of electromagnetic radiation on the surrounding equipment and personnel and damage; and, wave-absorbing coatings can be in the complex curved surfaces, tiny corners, holes, edges and other places conveniently coated, so as to form a coating film accurately and sturdily in the precise and complex parts, to meet the needs of industrial, scientific and medical equipment shielding, EMC.
Electromagnetic radiation protection for radio and television transmitters: Radio and television transmitters cause strong field strength to the surrounding area. Utilizing the absorption properties of electromagnetic radiation, in the band of higher radiation frequency, the use of suitable absorptive coatings to cover the building in order to attenuate the indoor field strength. In addition, the coating combines shielding properties and is a shielding absorptive coating with 20 to 30 dB of shielding performance in the 10 MHz to 1.5 GHz range.
Industrial, scientific and medical equipment electromagnetic radiation protection: industrial, scientific and medical equipment in the process of work will produce a large amount of electromagnetic radiation, if not properly handled, not only to their own working environment will cause damage, but also to the surrounding equipment will cause interference. The most obvious example is the problem of secondary clutter within the machine. Secondary clutter will often bring the machine, equipment, program disruption, resulting in scientific experiments, medical testing results, such as large deviations, thus bringing great resistance to scientific research, production, and even threaten the safety of human life. In addition, the electromagnetic radiation emitted by these devices will also jeopardize the health of the operators. Therefore, electromagnetic radiation protection for industrial, scientific and medical equipment is very necessary. Due to the high precision of industrial, scientific and medical equipment, the protection methods of electromagnetic radiation also put forward higher requirements. In the choice of radiation protection methods, in addition to the selection of low-radiation substrates and distance protection, the use of wave-absorbing materials for protection is also very important as one of the protection methods.
Electromagnetic radiation protection of household appliances: all electrical appliances such as refrigerators, televisions, etc., in the process of electromagnetic radiation will be issued, just because electromagnetic waves is an "invisible" material, because electromagnetic waves are invisible, touching the energy of the material, but also timeless, ubiquitous, and therefore more dangerous and hazardous, we can not perceive it. With the implementation of 3C certification, electromagnetic radiation protection requirements are also increasingly high, in fact, like household appliances, electromagnetic radiation, to take protective measures is not difficult, just in the production process, plus a simple process - spraying wave-absorbing materials, however, the choice of wave-absorbing coatings according to the frequency band to decide.
Mobile phones, computers, electromagnetic radiation protection: in the development of science and technology today, cell phones, computers bring convenience to people at the same time, but also brought the harm of electromagnetic radiation can not be ignored. In order to minimize cell phones, computers on the human body, especially the head of the radiation, in addition to reducing the radiation power of the phone as much as possible and to ensure that the use of cell phones do not let it come into contact with the human body, should also be considered for other protective measures, the cell phone's radiation frequency of 800 to 1800MHz, the computer will also produce several hundred megawatts of electromagnetic waves, if in the production process, to be able to cell phone shells, computer cases, computer monitors with absorption function sprayed on the inner side of the monitor, the computer can be used to protect the human body. If in the production process, can be in the cell phone shell, computer chassis, computer monitor inside the spray with absorption function of wave-absorbing coatings, will be excess electromagnetic wave absorption, there will be no more electromagnetic radiation hazardous problems. Spraying wave-absorbing coating is very simple. Neither affect the appearance of the beautiful, nor increase the cost. With people's awareness of electromagnetic radiation more and more, the market for radiation protection type products will also become bigger and bigger.
For example: green chassis (the world's first) now the overall performance of the computer to improve rapidly, the power of the main components within the computer is increasing, but at the same time the amount of radiation of the computer host is also growing. As we all know, electromagnetic radiation is extremely harmful to human health. A long period of time in the electromagnetic radiation pollution in the environment, will make people produce easy fatigue, memory loss, physiological function decline and so on the adverse symptoms. What's more terrible is that this radiation damage is invisible, can't touch, even if you are all day for the computer radiation harm, you also have no way to realize. As a result, the choice of a high performance radiation protection chassis, it is imperative. Currently anti-radiation chassis technology is shielding electromagnetic waves, shielding is the purpose of electromagnetic waves confined to a certain area, the difference is that the shielding is the main use of electrically conductive materials on the electromagnetic wave reflection to limit the propagation of electromagnetic waves. Generally need to shield the entire source of radiation, otherwise there will be a direction of weakness, while the other direction of the phenomenon of increased, theoretically simple, in fact, the technical requirements of the process is quite high.
Absorption is the use of materials for electromagnetic wave absorption, so that the electromagnetic field of electromagnetic wave energy into thermal energy. Electromagnetic wave absorbing material use of low technical requirements, EMC materials research is currently focused on shielding materials, electromagnetic wave absorbing material research is relatively small. In fact, electromagnetic wave absorbing materials in EMC technology with shielding materials and other technologies can not be replaced. Absorbent material is easy to use, do not need to make changes to the original design, as long as the computer chassis in the 2 to 6 surface body sprayed on the 0.2 to 1.0 mm thickness of the wave-absorbing coatings can be used in addition to wave-absorbing coatings to protect against radiation function has more unexpected effects.
Office, residential electromagnetic radiation protection: wave-absorbing coatings in the application of civilian products are not only these, soon wave-absorbing coatings will be applied to your daily life, for example: your office, indoor spray wave-absorbing coatings, there will be no more electromagnetic radiation hazards, it will be your office, indoor home appliances, office equipment radiating electromagnetic waves (electronic fog) absorption, conversion into harmless substances, and at the same time, will be the same as the office, indoor home appliances, office equipment radiating electromagnetic waves (electronic fog) absorption. Converted into harmless substances, at the same time most of the external electromagnetic wave absorption isolation, it will be a very clean electromagnetic environment space.
3. Objectives
The world entered the information age, the information revolution has brought great benefits to mankind, but the negative electromagnetic radiation pollution has just been recognized by the people, the governance of electromagnetic radiation pollution is unprecedented, the research has just begun, the product line is to be developed in large quantities, belongs to the sunrise industry, the lifespan is extremely long. Governance of electromagnetic wave pollution, is a high-tech and emerging industries. With the "Chinese people *** and the prevention and control of electromagnetic environmental pollution regulations" will soon be frequency cloth implementation, the governance of electromagnetic pollution will be like today's governance of water, air, noise pollution, there will be a large number of enterprises to participate in a large number of products to enter this market, the rapid formation of a new environmental protection industry. Fully utilize their own technology, materials, unique advantages, quickly improve and establish a domestic electromagnetic radiation protection technology and product research, development, production and application base, leading the country, the world, is a major strategic initiatives.
4. Markets and customers
4.1 Communication base stations, television broadcasting systems
4.2 Mobile phones, computers, electronic products, household appliances, etc.
4.3 High-frequency heating equipment, high-frequency furnaces, and other industrial facilities
4.4 Hospital CT rooms, ultrasound rooms, resuscitation rooms, operating theaters, and other medical areas
Fourth, the project risk Evaluation and analysis
1. Disadvantages
New products and technologies need to publicize and promote the cost of large.
2. Market analysis
Electromagnetic wave anti-pollution project is a promising cause, mainly in the strong support of the government and the masses mean to improve, but also to declare science and technology projects, to obtain the funds of all levels of government gratuitous, paid support. Production of products, mainly to buy raw materials, and then by the matching combination, without large-scale equipment, low investment, quick results, there will be no big risks. The series of products developed by utilizing this technology and materials can also obtain huge profits! If you take a full range of cooperative development, strong combination, the development of series of products, in this new field of demand, will get huge economic and social benefits.
3. Threat
The only acute problem is: the current reference to some of the past standards, due to the rough and low, resulting in some of the more polluted areas also do not exceed the standard, which brings a great obstacle to the management of pollution, but the near future the country will develop a scientific pollution standards, in addition, from the perspective of the cumulative effect of electromagnetic wave pollution, this risk will also be reduced.
This column editor Wang Shengju