One of the real ultra high molecular weight polyethylene identification
As a new type of engineering plastics, UHMWPE has been widely used in all walks of life. Especially in the silo as the liner, the use of its self-lubrication, low friction coefficient, non-bonding and other characteristics, become a lot of enterprises preferred material. But in recent years, with the development of the industry, the market began to appear a lot of plate products also known as ultra-high molecular polyethylene, its low price, many enterprises to use this product. But the use time is very short, there will be off the board, fall off and other phenomena, caused a great loss to the enterprise. According to our years of production and sales experience, summed up some easy to operate to identify the authenticity of the method (a comprehensive comparison of several methods)
Color recognition (see)
There are two kinds of liner on the market: black and white. As the liner used in the silo, the better effect of comprehensive use is black, that is, modified ultra-high molecular weight polyethylene. Generally physical modification, which is mainly through the addition of aluminum oxide, silica, carbon black, glass beads, molybdenum disulfide, quartz sand and so on to meet the performance requirements can not, and then suitable for different use environment, in order to achieve better use effect. We compare the material properties of the two colors in the following table
Materials/Properties The impact strength Tensile yield The coefficient of friction The density of Bibulous rate white 120 19 0.1 0.945 0.01-0.06 black 140 21 0.13 1.15-1.35 ＜0.01
It can be seen from the above table that the properties of the modified ultra-high molecular weight polyethylene lining board are better than those of the white lining board, and it is more suitable for all kinds of silo lining boards.
Many enterprises choose white lining board by the manufacturer publicity white lining board is pure ultra high molecular weight polyethylene board manufacturing. The actual reason is that it can not produce modified ultra-high molecular weight polyethylene sheet, can only use some cheap non-ultra-high plastic or polymer polyethylene products, to pretend to be pure ultra-high products for sale. Just like when we build a house, we need to use mortar concrete, not pure cement is the same reason.
