Презентация на тему: " Environmental aspects in the production of nano- titanium Fulfilled the" — Транскрипт:
Environmental aspects in the production of nano- titanium Fulfilled the : Abdrahmanova.M Checked : Naboko. E.P Group :metm
Modern development of nanotechnologies and their impact on the environment There is growing evidence (the research of independent scientists) that this certainly new technological revolution in the field of materials poses a certain threat to human health and safety and the environment and can cause serious problems in the future. Those who develop nanotechnology, put on production, produce products and promote it to the market, with much less cost and less intensively study the possible negative consequences from nanotechnology and nanomaterials. Government support for nanotechnology research in the US, Europe and Japan already exceeds trillions of US dollars. Mechanisms for controlling and minimizing risks are necessary to avoid the repetition of mistakes with past technological revolutions. Nanomaterials are disposed of and enter the environment without a systematic study of their influence on nature, in the absence of monitoring systems, tracking and detection devices, and means and methods for their transformation in the environment.
Basic methods necessary to reduce the impact on the environment The precautionary principle Mandatory special regulation of nanotechnology Protection of health and safety of the population and workers producing nanomaterials.
Precautionary principle The precautionary principle is defined by the declaration as follows: "If any activity can pose a threat to human health or the environment, precautionary measures should be taken, even if no cause-effect relationship is established (" do no harm "). The burden of protection rests with manufacturers and distributors (in a broad sense). " "Without security data - there is no admission to the market". Prior to the commencement of product promotion, it is necessary to determine the procedure for assessing Health and safety of the population and workers producing nanomaterials. On the bloodstream, nanoparticles can circulate throughout the body and accumulate in organs and tissues, including the brain, liver, heart, kidneys, spleen, bone marrow, nervous and lymphatic systems. Getting inside the cell, nanoparticles can disrupt the functioning of cells, cause harmful oxidation-reduction reactions, leading to even cell death. Therefore, it is necessary to protect workers manufacturing nanoparticles, nanomaterials based on them and consumers from harmful effects, as well as the entire wildlife. Mandatory special regulation of nanotechnology This should be done by government agencies and in cooperation with independent public organizations. If there are regulatory systems in the state, then before the emergence of special ones in them, it is necessary to make changes that will allow them to be applied to nanomaterials as a temporary measure, until permanent special regulations in relation to nanotechnologies and nanoproducts begin to operate.
Nanotitan Field of application of nanotitanium In medicine In production In technology
The use of nanotitanium in medicine Titanium and titanium alloys are one of the most common structural materials used in the aerospace, mechanical engineering, chemical industry and medicine, so increasing the mechanical properties of titanium materials is a topical issue for modern metal science. For example, the medical community in the field of traumatology and dentistry has shown great interest in these materials for implants because of their high physical, chemical and mechanical properties. This is due to the fact that, firstly, titanium and its alloys have high corrosion resistance in many environments. Secondly, titanium alloys have an exceptional biocompatibility with human tissues and do not provoke allergic reactions, inflammations, such as stainless steels or cobalt-chromium alloys. Thirdly, titanium and titanium alloys have high strength and low modulus of elasticity, which are most preferred for use in orthopedics and traumatology. However, the development of modern medical implants demands not only to further increase the strength, but to increase the resistance of the implant material to high fatigue loads.
Conclusion Nanomaterials are increasingly used. At the same time it is obvious that artificial nano-objects can have toxic properties. And the degree of such impact can not be estimated, based on knowledge of the toxicity of the materials from which they are made. For the further development of nanotechnologies, a clearer understanding of both the properties of the nanomaterials themselves and the mechanisms of their interaction with biological objects is necessary. Titanium nanomaterials and titanium nickelide are very promising for use in medicine because of their complete biocompatibility with living materials. Experts predict that in the near future it is planned to develop structural and special functional nanomaterials with a level of strength and other physicochemical properties 2-3 times higher than the best domestic and foreign analogs, with reference to the requirements of aerospace, electrical engineering, electronic, chemical and instrumental industries, computational second, the sensor and medical technology, environmental safety systems of human tissue