[tips] why helmets can withstand stress

ABS helmets are plastic safety helmets. The ABS name is acrylonitrile-butadiene-styrene resin. This engineering plastic has heat resistance, high surface hardness, dimensional stability, and good chemical resistance. At the same time, it has good electrical insulation properties, is rarely affected by temperature and humidity, and remains constant over a wide range of frequency changes. In addition its chemical performance is also very good, almost no effect on water, inorganic salts, alkalis and acids, ABS helmets have the disadvantage of being resistant to combustion, low temperature resistance, poor anti-aging properties. ABS helmets are mainly suitable for mining, machinery industry and other high impact strength, wear at room temperature workplaces.

HDPE helmets and plastics are high-density polyethylene materials. This material has high surface hardness and good heat resistance, electrical insulation and dimensional stability. It is widely used in hard hat production. However, the compressive strength of this material is poor. If the internal structure of the shell and the design of the wall thickness of the product are not improved, the lateral pressure test is often unacceptable. Therefore, the hard hat cap of this material must be strengthened against the lateral pressure design, otherwise it will be in Europe and Australia. , Japan and China standards are difficult to pass, HDPE helmets have a wide range of applications, such as metallurgical, chemical, mining, construction, machinery, electricity, transportation, forestry and geological work can be used. Since the North American standard does not include side pressure, HDPE helmets are widely used in the Americas, while hard hats are generally not produced in HDPE in countries such as Japan and Korea.

FRP helmets are made of fiberglass-reinforced plastics. This material has high fiber strength, excellent heat resistance and electrical insulation, as well as excellent acid and water resistance, flame resistance, and small deformation. It is available in all countries of the world. The hard hats of the materials and the FRP helmets will be used in special occasions such as metallurgical hot work sites, oil field drilling, forest harvesting, or construction in cold regions.