Recycle paint details: functions of paint and the differences between painting and coating2017.12.18 10:32
Paint is a kind of chemical mixture coating that can firmly cover the surface of objects for protecting, decorating, marking and other special uses. So, how to make out the functions and differences of paint? Here're some functions of it:
Corrosion protection, waterproof, oil proof, chemical resistance, light resistance, temperature resistance and so on. Objects exposed to the atmosphere, subject to oxygen, moisture and other erosion, resulting in metal corrosion, wood decay, cement weathering and other destruction. Apply a coating to the surface of the object to form a protective film, can prevent or delay the occurrence and development of these phenomena, and prolong the service life of various materials. Therefore, the protective effect is one of the main functions of coatings.
Colour, lustre, design, smoothness, etc. There will be colorful appearance when coating different materials paints, it plays a role in beautifying the human living environment, and makes contributions that cannot be neglected to the material and spiritual life of human.
Marking, antifouling, insulation, etc. To modern coating, this kind of function is more and more important than the first two kinds. Modern paint varieties offer a wide variety of special functions, such as electrical insulation, conductive, shielding electromagnetic wave, anti-static and so on; Mildew proof, bactericidal, insecticidal, anti marine biological adhesion and other effects in biochemical; High temperature resistance, heat preservation, moderate temperature labeling, and prevention of delayed burning, ablation, heat insulation and other effects in thermal energy; Reflecting light, emitting, absorbing and reflecting infrared rays, absorbing solar energy, shielding rays, marking colors and other effects in optical performance; Anti-skidding, self-lubricating, anti fragmentation splash and other effects in mechanical property; Anti noise, vibration reduction, sanitary disinfection, anti condensation, anti icing, and other different functions. With the development of the national economy and the progress of science and technology, the coating will provide and update various special functions in more aspects.
Paint, in general, is the material that can be applied to the surface of the coated object to form a continuous film which is firmly attached. Paint is viscous oily pigment, flammable under dry conditions, insoluble in water, slightly soluble in fat, soluble in alcohols, aldehydes, ethers, benzene, alkanes, soluble in gasoline, kerosene, diesel oil.
Benzene compounds have been identified as strong carcinogens by WHO. When people inhale high concentration of toluene or xylene in a short time, there will be symptoms of central nervous system anesthesia, mild ones may have dizziness, headaches, nausea, chest tightness, fatigue, confusion, and severe ones may suffer from coma, resulting in respiratory, circulatory failure to death. Benzene is mainly irritating to the skin, eyes and upper respiratory tract, regular exposure to benzene can cause skin to become dry and desquamation due to degreasing, and some will get allergic eczema.
the differences between coating and painting
coating: The substance that is applied to the surface of object to make it beautiful or resistant.
painting: Old name for coating. Refers to oil and paint products, "painting" stands for "coating" in specific denomination of coating varieties, such as blending paint, primer, topcoat, etc.