Because body stickers need to be used outdoors, they must be able to protect from sun and rain, so the commonly used materials are PVC or PET.
PVC products have chemical resistance, and have strong resistance to oxidants, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid, and it is not suitable for use in contact with aromatic hydrocarbons and chlorinated hydrocarbons. [2]
PVC has the advantages of self-extinguishing flame resistance, abrasion resistance, sound attenuation, high strength, good electrical insulation, low price, wide source of materials, and good air tightness.
The disadvantage of PVC is that it has poor thermal stability and is easy to age under the influence of light, heat and oxygen. The long-term use temperature of most PVC plastic products should not exceed 55 ° C, but the long-term use temperature of specially formulated polyvinyl chloride plastics can reach 90 ° C.
PVC has non-flammability, high strength, weather resistance, and excellent geometric stability. It has strong resistance to oxidants, reducing agents and strong acids. In addition, due to its good flexibility, shrinkage and opacity, good processing and labeling performance, strong chemical resistance, and durability, it is suitable for long-term outdoor use.
PET polyester film is made of polyethylene terephthalate. PET has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. The electrical insulation is excellent, even at high temperatures. At high frequencies, its electrical performance is still good, but its corona resistance is poor, non-toxic, weather resistance, chemical stability is good, creep resistance, fatigue resistance, friction resistance, and dimensional stability are very good. it is good. Low water absorption, weak acid and organic solvent resistance, but not hot water immersion, alkali resistance.