In high-risk working environments such as construction sites, mines, and chemical plants, hard hats are essential equipment to protect workers' heads. Plastic safety helmets are widely welcomed because of their advantages such as lightness, economy, and convenience. However, do you know that the quality of plastic safety helmets is closely related to its material, grade and material? This article will introduce in detail how these factors affect the quality of helmets and help you choose the right helmet.
1. The influence of different plastic materials
Plastic helmets are mainly made of different plastic materials such as polyethylene (PE), polypropylene (PP) and polyamide (PA). These materials differ in strength, wear resistance, aging resistance, etc., so they have different effects on the quality of helmets:
Polyethylene (PE): PE helmets have good impact resistance, electrical insulation and corrosion resistance. However, it has poor aging resistance and may become brittle due to the influence of sunlight and temperature.
Polypropylene (PP): The helmet made of PP is light in texture, with good strength and wear resistance. At the same time, its anti-aging performance is better than that of PE, and it is suitable for outdoor environments.
Polyamide (PA): The safety helmet made of PA has extremely high strength, wear resistance and anti-aging performance, and is suitable for use in harsh environments. However, the cost of PA material is relatively high, and the price is relatively expensive.
2. The influence of different grades of the same material
Plastic helmets of the same material may have different grades, which mainly involve factors such as the molecular weight of the plastic, the type and content of additives, and so on. Different grades of plastic have a great influence on the quality, performance and service life of the helmet. Generally speaking, plastics with high molecular weight and high-performance additives have better strength, wear resistance and anti-aging properties, so the quality of the helmet produced is better.
