subject: Concerned About The Direction Of The Field Of Polyurethane - Pu Foam - Plastics Industry [print this page] Full of confidence in all of that in the polyurethane industry in China entered the stage of rapid development is more, we should be concerned about the future development of polyurethane technology, where the most difficult to accept the challenges of innovation, where the greatest amount of interest in upgrading. In 2007, even after a few years, we stay the perspective should be more areas in which I hope read the following articles, can be harvested.
1, polyurethane foam and building energy-saving polyurethane rigid
Foam is the insulation material of all the wall insulation in the insulation properties of the best products, but also the world's most forward-looking insulation. Ministry of Science and Technology Division has been set up to promote application of polyurethane architectural conservation working group, and in October 10, 2006 in Beijing a "wall of energy-saving polyurethane application technology of international exchange." Agreed that the international Polyurethane is the best insulation performance, light weight, heat, moisture, noise, heat, shock, corrosion resistant, easy to bond with other materials, such as droplet combustion does not produce outstanding performance. At present, the polyurethane foam in our country are mainly used in heating, refrigeration, shipbuilding, Oil , Chemical, automotive, transportation and other industries, with a share of the building wall insulation less than 10%, Europe and the United States and other developed countries in building insulation material for the polyurethane material is about 49%. With the domestic building energy efficiency standards for further improvement of thermal energy around a series of studies carried out in the field of institutions and enterprises have gradually increased, rigid polyurethane products in the construction field "grand plans."
2, a kind of polyurethane elastomer polyurethane tires with both high hardness of plastic, but also has high flexibility of the polymer rubber composite material. Based on excellent mechanical properties, from the 20th century were started 60 years polyurethane elastomer of the tire. In particular, cast polyurethane elastomer is currently the most wear-resistant elastomer, can be colored with high cutting resistance and absorb vibration, shock absorption, weight-bearing capacity is very large and excellent oil and chemical resistance, etc, but no toxicity to the human body role, but also fully biodegradable, also do not add carbon black and the aromatic oil, is an ideal material for manufacturing the tire tread. Polyurethane tires with casting process, its structure and current production of tires is very different. All pneumatic tire is polyurethane matrix, and the tread belt 3 parts. Some polyurethane pneumatic tire in two forms: one is to cast polyurethane matrix, and compared with production of common tire tread rubber; the other is the matrix for the radial matrix, while the tread is polyurethane. PU pneumatic tires, compared with ordinary steel radial tire has the following advantages: (1) average 10% lower fuel consumption; (2) 51% lower tread wear; (3) light weight 30%; (4) low rolling resistance more than 35%; (5) and better uniformity, and will not be tread stripping.
PU PU tires with full wheel (PP-type) and PU rubber tire inner tubes (RP-type), with help for all kinds of electric driving, wheelchair, stroller and so on. Advantages? Good shock-absorbing force, friction, not afraid of nails, do not be discouraged, do not tire safety, save money. However, the present study, polyurethane tires are still some problems to be solved, namely, polyurethane tires to improve traction, braking performance, improve the hydrolysis resistance, truck tires, etc. multiple injection molding process. In the development process of polyurethane tires, high temperature performance is the practical impact of polyurethane tire main factors.
3, Waste Recycling Environmental Protection is rising polyurethane polyurethane industry faces another major problem. With the polyurethane material in the national Economy The use of more and more widely, increasing the amount of its recycling of waste is also increasingly attention has been paid. Include production plant waste polyurethane scrap materials, Mold Spill materials, abandoned cars, refrigerators of polyurethane foam and elastomer, waste and scrap soles PU leather , Spandex old clothing. Current recycling of polyurethane There are three main ways: physical, chemical, Energy Method.
