The washability of traditional coatings is poor, and the wall will become multi-tone after brushing for a period of time. Now there is a new coating with nanotechnology, which not only improves the washing resistance by more than ten times compared with traditional materials, but also has extremely low organic volatile matter, no toxicity, no harm and no peculiar smell, effectively solving the problems that the sealing performance of buildings is enhanced and harmful gases cannot be discharged as soon as possible.
Long-term exposure of human body to electromagnetic waves and ultraviolet rays will lead to an increase in various morbidity or affect normal fertility. Now, high-efficiency radiation protection clothes with nanotechnology-high-tech computer work clothes and maternity clothes have come out. Scientists and technicians mix nano-sized anti-radiation substances into fibers to make a kind of "nano-clothing", which can block more than 95% of ultraviolet or electromagnetic radiation, and is non-volatile and insoluble in water, thus maintaining the anti-radiation ability for a long time. Similarly, clothes made of chemical fiber cloth are prone to static electricity due to friction. Adding a small amount of metal nanoparticles in production can get rid of annoying static electricity.
White pollution has also encountered a strong challenge of "nano". Scientists use specially developed equipment to crush degradable starch and non-degradable plastics to "nanometer level" and then physically combine them. This new raw material can be used to produce 100% degradable agricultural plastic film, disposable tableware, various packaging bags and other similar products. Experts said that this is a substantial breakthrough to completely solve the problem of white pollution.
The performance of electronic devices manufactured by nanotechnology is much better than that of traditional electronic devices. The working speed of nano-electronic devices is 1000 times that of silicon devices, so the product performance can be greatly improved. The power consumption of nano-electronic devices is only11000 of that of silicon devices. A 5-inch CD less than the size of a palm can store all the books of at least 30 Beijing libraries. Nanomaterials are small in size and light in weight, which can greatly reduce the size and weight of various electronic products.
Nano-metal particles are flammable and explosive, and several nano-metal copper particles or aluminum particles will burn and explode violently when exposed to air. Therefore, the powder of nano-metal particles can be used to make high explosives, and the solid fuel of rockets can also produce greater thrust. Using nano-metal particle powder as catalyst can accelerate the chemical reaction rate and greatly improve the yield of chemical synthesis.
Compressive and tensile properties of nano-metal blocks. The bulk metal material made of metal nano-particle powder is more than ten times stronger than ordinary metal and can be stretched by dozens of times. Used to make airplanes, cars and ships, the weight can be reduced to one tenth.
Nano-ceramics are both rigid and flexible, and nano-ceramics made of nano-particle powder are plastic, which has brought a revolution to the ceramic industry. The application of nano-ceramics in engines greatly reduces the friction coefficient of engines, enhances the heat dissipation ability, prolongs the service life of engines, and reduces the emission of pollutants, which is a new generation of green products.
Nano-oxide materials are rich in color, and nano-oxide particles can quickly change color under the irradiation of light or the action of electric field. Very suitable as glasses for soldiers to protect laser guns. Nano-oxide materials will be made into billboards, and the effects will be more colorful under the action of electricity and light.
Nano-semiconductor materials can emit various colors of light, can be made into small laser light sources, and can also convert the absorbed light energy in the sun into electric energy. Solar cars and houses made of them have great environmental protection value. Various sensors made of nano-semiconductors can sensitively detect the changes of temperature, humidity and atmospheric composition, and will be widely used in automobile exhaust monitoring and atmospheric environmental protection.
When nano-drugs are used to treat diseases and save lives, they are combined with magnetic nanoparticles. After taking, these nano-drugs can move freely in blood vessels and human tissues. Then a magnetic field is applied outside the human body to guide, so that the drug is concentrated in the diseased tissue, and the effect of drug treatment will be greatly improved. At the same time, nano-drug particles can also be used to directionally block capillaries and make dead cancer cells "starve to death". Nanoparticles can also be used for cell separation in human body, and can also be used to carry DNA to treat gene defects. At present, cancer cells and normal cells in animals have been successfully separated by magnetic nanoparticles and successfully used in clinical experiments to treat human bone marrow diseases.
In the nano-world, people can freely cut and build materials according to their own wishes. This technology is called nano-machining technology. Nanomachining technology can integrate different materials. It not only has the function of a chip, but also can detect electromagnetic wave (including visible light, infrared light and ultraviolet light) signals, and at the same time can complete computer instructions. This is a nano-integrated device. Applying this integrated device to the satellite can greatly reduce the weight and volume of the satellite, making it easier to launch and more economical.
With the rapid development of nanotechnology, its security problem can not be ignored. Because the physical and chemical properties of materials have changed in the process of becoming nano-scale, it is easier to penetrate various barriers, even the skin and cell membrane of organisms, and enter tissues and organs than conventional materials. Nano-materials may pollute the environment and endanger health if they are not handled properly during production and use. Some research results show that some artificial nano-materials are toxic, which may cause oxidative stimulation, inflammatory reaction, cardiovascular system and other tissues and organs damage. Therefore, while developing nanotechnology, we must simultaneously carry out its safety research to make it a new technology that benefits mankind safely.