We have seen a variety of safety helmets in various productions. The helmet manufacturers then introduced the materials and characteristics of various types of helmets.
As the most common helmets, FRP helmets are made from unsaturated special polyester resin and alkali-free high-strength glass fiber cloth, using modern technology and strict testing methods. Frp is a good corrosion resistant material and has good resistance to atmospheric, water and general concentrations of acids, bases, salts, and a variety of oils and solvents. Has been applied to all aspects of chemical preservation, is replacing carbon steel, stainless steel, wood, non-ferrous metals. It is also an excellent insulating material used to make insulators. It can still protect good dielectric properties at high frequencies. In addition, frp has a low thermal conductivity, is an excellent thermal insulation material, and is an ideal thermal protection and ablation resistant material.
Plastic hard hat manufacturers use high-density polyethylene, which is a highly crystalline, non-polar thermoplastic resin. The appearance of the original hdpe was milky white, showing a certain degree of translucent in the thin section. Pe has excellent resistance to most living and industrial chemicals. Certain types of chemicals are chemically corrosive and can be used for packaging purposes. Hppe has good electrical properties, especially high insulation dielectric strength, making it very suitable for wire and cable. Medium to high molecular weight grades have excellent impact resistance, both at room temperature and even at low temperatures of -40f.
The material of the polypropylene plastic safety helmet is mainly acrylic. A thermoplastic resin made from the polymerization of propylene. There are three isomorphs, irregularities, and irregularities in three configurations. Industrial products use isotactic compounds as their main components. Polypropylene also includes copolymers of propylene with small amounts of ethylene. This material is non-toxic, odorless, low density, strength, stiffness, hardness, heat resistance are better than low-pressure polyethylene, has a high bending fatigue strength, can be used at about 100 degrees. Has good electrical properties and high frequency Insulation is not affected by humidity, but brittle at low temperatures, not wear, easy to aging. Suitable for the production of general mechanical parts, corrosion-resistant parts and insulating parts. The common acid and alkali organic solvents have little effect on it and are therefore commonly used in hard hat making.
In addition, tape, paper glue, and bamboo are all raw materials used to make hard hats. At present, the national requirements for safety helmet materials are more standardized and professional, and some manufacturers have also developed high-tech helmet materials.
I believe that through the above-mentioned content given by the helmet manufacturer, we have a brand-new understanding and a deeper understanding of the helmet. I hope everyone can pay attention to the importance of safety in the future production.
This article is an article of Qingdao Zhongbang Instrument Co., Ltd. If you need to reprint it, be sure to add the source of the description. Reproduce the misappropriation without permission.
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