The formation of stains is often caused by not paying attention to some details and living habits in life. Today, Xiaobian will tell you the three biggest killers that cause stains.
1, the sun
Sun exposure is the number one killer of plaques. The melanin deposition caused by the sun in the general population is discharged with the body's metabolism, but some people may have slower metabolism or older, leaving melanin and forming dark spots (spots). ).
PP plastic, also known as polypropylene plastic, is another fine resin varieties, following the development of nylon, which is a semi-crystalline materials, the advantage is obvious, with excellent mechanical properties and heat resistance, with a high not hydrophilic sex, almost non-absorbent. The disadvantage is poor low temperature impact resistance, easier to aging. However, for comparison PE plastic having a higher melting point.
PE plastic is polyethylene plastic, its corrosion resistance and electrical insulation are very strong. Rigid hardness and strength are relatively high, and the same PP plastic, it also very small water absorption.
Polycarbonate (referred PC) is a polymer molecular chain containing a carbonate group, an ester group according to the structure can be divided into aliphatic, aromatic, aliphatic - aromatic and other types. Which due to the aliphatic and aliphatic - aromatic polycarbonate lower mechanical properties, thereby limiting its application in engineering terms. Currently, only the aromatic polycarbonate obtained industrial production. Due to the special nature of the polycarbonate structure, it has now become the top five fastest growing engineering plastics in general engineering plastics.
Three chairs made of plastic material and they have the same advantage.Stackable Plastic Chairs, Plastic Leisure Chair, White Plastic Chair, Plastic Dining Chairs
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