Before the glass fiber, asbestos is harmful to human life and health, which has become a consensus in the world today. It has become a trend to restrict and prohibit the use of asbestos. So is the glass fiber similar to asbestos in performance and form harmful to human health? Will it cause cancer like asbestos? Will it cause silicosis like asbestos? Will it cause other human diseases?

Although the appearance, shape, performance and application of asbestos and glass fiber are very similar, they are different in composition and structure. Asbestos fiber is crystalline fiber, while glass fiber is amorphous and non crystalline structure. Asbestos fiber can crack into finer fibers along the axial direction, 0.02-2 μ, which is very important for human health.

Glass fiber generally refers to the filaments of glass fiber made of silicate melt, such as continuous glass fiber with a diameter of 3-25 μ m, mainly 6-15 μ m (6-13 μ m in China). Glass fiber is not crystal structure, and it is impossible to crack into finer fibers along the axial direction, but most of these fibers are brittle (especially coarse fibers) and easy to break into shorter fibers under stress.

According to the World Health Organization (WHO), the American Institute of occupational safety and health and many experts in the world through long-term experimental research, it is believed that the minimum diameter of fiber inhaled by human body should be less than 3 μ m, and its length diameter ratio should be greater than 5:1. Generally speaking, it is believed that fiber with a length of more than 200-250 μ m will not be inhaled into the deep lung of human body. Some experts believe that fiber with a length of more than 100 μ m is almost impossible to be inhaled into human body. Deep in the lungs. That is to say, the common continuous glass fiber (diameter 6-13 μ m) can not be inhaled into the deep of human lung; that is to say, from the physical shape and geometric size of the fiber, it is difficult to inhale into the deep of human lung.

It can be concluded that glass fiber is safe.

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