natural rubber, synthetic rubber, reclaimed rubber, carbon black, various additives, fillers, matrix materials etc.The term rubber is derived from the Indian cau-uchu, meaning "tree of tears," a highly resilient polymeric material with reversibly deformable properties that is flexible at room temperature and produces large deformations with little external force, Remove the external force can restore the status quo. Rubber is a completely amorphous polymer with a low glass transition temperature (T g) and a high molecular weight, often greater than a few hundred thousand.
The early rubber was latex from plant such as rubber tree, rubber grass and the like, which was made of processed materials with elasticity, insulation, imperviousness and air. High elasticity of the polymer compounds. Divided into two kinds of natural rubber and synthetic rubber. Natural rubber is made from rubber tree, rubber grass and other plants made of plastic processed; synthetic rubber by a variety of monomers derived by polymerization. Rubber products are widely used in all aspects of industry or life.
Isoprene rubber, like natural rubber, has good elasticity and abrasion resistance, excellent heat resistance and good chemical stability. Isoprene rubber raw (raw) strength was significantly lower than natural rubber, but the quality of uniformity, processing performance superior to natural rubber. Isoprene rubber can be used in place of natural rubber to make truck tires and off-road tires. It can also be used to produce various kinds of rubber products.
Rubber Raw Materials Exhibition Rubber Raw Materials Exhibition,Rubber Products Exhibition,Straight Tread Tires,Motorcycle Tyres China (Guangrao)International Rubber Tire & Auto Accessory Exhibition Committee , http://www.chinagrtire.com
As the largest energy sector in the National 863 Program, the “Fast Neutron Reactor†will be applied to important projects such as power generation and value-added nuclear fuel. Entrusted by the China Institute of Atomic Energy, China First Heavy Machinery Group Co., Ltd. is responsible for the equipment manufacturing of this project. And whether the rotating shield plug bearing "fast reactor" can work normally will play a vital role. As a long-term supplier of China's No. 1 Heavy Machinery Group, in 2002 Liaoning General Machinery Group, with its high level of research and development capabilities and diversified product structure, beat other well-known domestic enterprises and became a professional manufacturer of this project.
The predecessor of Liaoning General Machinery Group is Anshan Bearing Factory. Because of its strength, it has become the professional manufacturer of bearings designated by the former Ministry of Machinery. After the enterprise was transformed in October 1998, General Machinery Group quickly adjusted its product structure and formed a production pattern of “one factory and three linesâ€, namely the bearing production line represented by super large and the pressure vessel production line represented by oil-free air compressor. A mechanical manufacturing line represented by machining. The group has also acquired 6 companies, and its scale has been continuously expanded, and personnel, technology and capital have been re-integrated.
It is understood that compared with conventional bearings, such rotary shield plug bearings can not be contacted by anyone once they are put into use. Therefore, the materials, processes and other requirements are quite strict, and there must be a strict set of design, processing, installation and operation. The quality assurance system ensures that it is accurate before it can be put into use. In 2002, after the two parties signed the contract and quality assurance agreement, after full technical preparation, the rotating shield plug bearing officially entered the design and production stage. Under the guidance and full monitoring of the experts of China Atomic Energy Research Institute and China No.1 Heavy Machinery Group Co., Ltd., through the unremitting efforts of the employees of Liaoning General Machinery Group Co., the rotating shielded plug bearing was finally developed and produced successfully.
China's first rotating shield plug bearing has been successfully developed
The 3.3 m diameter rotary shield plug bearing produced by Liaoning General Machinery Group passed the five tests including appearance, size, cleanliness, ultrasonic detection and static detection. It has been shipped recently and will be installed in China. Neutron reactor".