
There are many motorcycle helmets on the market, with varying prices and varying quality, and newcomers will inevitably兒童頭盔 of not knowing how to start.
A penny for a penny is the immutable law of market development, the high price is not necessarily the quality of life with outstanding, but for the low price must be a problem without a what good goods, the first thing to remember this.
At present, the motorcycle helmet safety testing standards are mainly DOT standard, ECE standard and Snell standard.
DOT standard is the U.S. helmet inspection standard, representing the acronym of the U.S. Department of Transportation. This helmet safety standard is a mandatory market standard. All motorcycle helmets sold in the U.S. market must meet this safety standard before they are allowed to be sold. The test standard includes flat, hemispherical and puncture tests, and is enforced by the U.S. authorities. Due to its “ancient” history, this set of standards is no longer a high-end helmet safety standards, relatively backward.
Finally, the Snell Safety Standard is a professional level. Many professional riders wear professional helmets are in line with this standard, the requirements are more stringent, the safety level is higher.
And then the shell of the helmet, the more common helmet shell material on the market in China as the main can be divided into thermoplastic engineering plastic, fiberglass, carbon fiber material these three, thermoplastic plastic is not suitable for the production of motorcycle helmet material, impact resistance problem ability level is very poor, the price is also the cheapest. If you fancy a helmet, but no solution we learned that the shell material, then some recommendations to choose to give up.
But polycarbonate is also a thermoplastic material, with better physical properties than thermoplastic materials, and cheaper, it is usually combined with acrylonitrile-butadiene-styrene copolymer, which is a common so-called ABS engineering plastic, with good impact resistance shell, usually low-end helmets are the preferred shell material.
Carbon fiber shells are usually made of aramid and aramid polymer. Carbon fiber has good structural strength, while aramid has excellent tensile strength, so the combination is perfect, not only high strength, but also very light weight, the only disadvantage is the price is expensive, generally is the choice of high-end helmet material combination.
The cushioning layer is also the main component of the helmet. In a sense, it is because of the existence of the cushion layer, your head will not be strongly impacted when you are hit, it is significant.
At present, most of our motorcycle helmets buffer layer is EPS foam material, but this we also have a delicate, good helmet buffer layer should be a two-layer structure or through the multi-layer EPS foam economic composition, the outer layer hard inner layer soft, can be respectively on the work intensity of different impact process to promote good absorption of social role, and cheap helmets in general companies will only tell in general terms You are EPS foam cushioning layer, will not directly tell you how many layers of composition, then the probability of a single layer of foam.