Comparison of properties of water - based coatings and oil - based coatings
Compared to environmental protection and health, waterborne polyester coatings (water-based polyester coatings) have advantages.
Toxicity: Due to the water-based polyester coating (water-based paint) using advanced polyurethane system, ultra-low volatile organic compounds content (less than the national mandatory standard 200 mg/L) is truly non-toxic and tasteless high-tech environmental protection products. Nitro paint is an organic solvent, its products contain benzene, toluene, xylene and its derivatives, so it has a strong toxicity, followed by nitro paint.
(2) flammability: Water-based wood lacquer replaces organic solvent with water, and its products are safe and non-flammable. Greatly reduce the production and circulation of dangerous factors and trouble. But containing benzene, xylene, acetone, solvent gasoline, day take water nitrocellulose lacquer and polyester lacquer (paint) are flammable items.
(3) Irritating smell: Water-based wood lacquer replaces organic solvent with water, so there is no irritating smell when painting. In addition, nitrocellulose and polyester paints contain organic solvents that evaporate into the air during coating and drying, directly irritating the human sensory organs.
(4) Use time after painting: waterborne wood paint coating times less, fast drying, easy painting, no time limit, can be moved in after painting. However, due to the volatilization of harmful gases by organic solvents in the drying process of nitrocellulose paint and polyester paint, houses decorated with nitrocellulose paint and polyester paint (oily paint) can not be moved in directly and need to wait for isolation time.
Compared with the quality and performance, the overall performance is basically the same.
(1) Hardness: water-based polyurethane coating using advanced water-based polyurethane system, when the coating film is completely dry, can reach the physical index of 2H ordinary polyurethane coating organic curing agent, so the use of ordinary polyester coating film hardness good nitro coating (oil coating) need to be coated more than 10 times, coating hardness is the worst
(2) Feel and fullness: polyester coating has a good effect on the feel and fullness of the coating film. Waterborne polyester coating uses thin coating + virtual texture technology, and the feel and fullness of waterborne polyester coating film are not so good after painting.
(3) Wear resistance, yellow resistance and durability: Water-based polyester paint (water-based paint) adopts advanced aliphatic polyurethane system. The coating surface is hard and wear-resistant, the coating film is soft and will not turn white due to collision. The coating film remains clear and transparent for a long time, and is artificially aged for 800 hours. The defect of turning yellow and failing to maintain the effect for a long time.
Construction and cost comparison, basically flat.
(1) Easy construction: do not need to add water dilution, can use water-based polyester paint, convenient direct construction; Nitrocellulose paint and polyester paint need to add water or related curing agent, according to a certain proportion. Therefore, nitrocellulose paint and polyester paint need professional guidance in the construction process.
(2) Paint waste, coating times: after the water-based polyester paint is used up, the remaining paint can be saved in a cool place to save the polyester paint added curing agent, so only once, the remaining paint will be wasted. Four coats of water-based polyester paint can achieve the effect of ten coats of nitrocellulose paint.
(3) Repairability: wooden furniture coated with water-based polyester paint, wooden furniture covered with nitro coating and polyurethane coating can be directly repaired, and the old coating film must be polished with sandpaper in order to paint.
(4) Coating cost: The amount of coating per square meter required by the use of water-based polyester coating is less, generally about 30M2/kg at a time, no need to dilute water every day, less working hours. As a result, the cost of using waterborne wood coatings is basically equivalent to using nitrocellulose and polyester coatings.