NFJ foam fiber porous reinforced material is a new material that appears in recent years in synthetic friction materials. With the development of society, the speed of train cars, the increase in the number of loads, especially the increase in environmental protection requirements, many new requirements have been put forward on the characteristics of friction materials. At present, the friction material industry at home and abroad generally believes that the friction material should develop in the direction of looseness, porosity, light weight, elasticity, low density and rough surface, and minimize the amount of organic binders (such as rubber, resin and other binders). . This is conducive to improving the mechanical and frictional properties of the brake components, reducing noise, and improving vehicle comfort. Increasing the self-binding properties of the inorganic materials of the friction material raw materials, reducing or banning non-ferrous metals to prevent the harm of these substances or their compounds to the human body.

      At present, developed countries have introduced policies prohibiting the use of non-ferrous non-degradable heavy metals in friction materials. Because friction materials generate dust on the wear surface during use and fly into the air, if the dust is directly inhaled into the lungs, it is difficult to exhaust it, or Landfall into the ground caused pollution of groundwater.

      Our company's researchers have developed a kind of NFJ foam fiber porous material. Its raw material is essentially pure iron (low carbon content ≤ 0.02%). Iron is a trace element required by the human body. It is harmless to the human body and does not pollute the atmosphere and water sources (because iron reacts with oxygen and acids in the atmosphere , Is a kind of degradable substance), NFJ foam fiber porous reinforced material has the characteristics of rough surface, loose, porous, plastic, low density, and slows down the rusting speed. NFJ foam fiber porous reinforced material is produced through a special process It has the characteristics of rough surface, loose, porous and plastic, low density, and slow rusting speed. At present, the NFJ foam fiber porous reinforced material has been applied to train synthetic brake shoes and automobile trolleys, and has been welcomed and recognized by customers.