Industrial paint plays an irreplaceable role in the protection and beauty of materials. Industrial paint is classified into organic solvents (xylene, butyl acetate, cyclohexanone, etc.) as solvent-based paints. , the other type is water-based paint that uses water as the dissolving medium. Solvent-based paint contains a large amount of organic solvents that volatilize during the drying process, so it is harmful to the environment and people. Water-based paint volatilizes in the form of water vapor during the drying process, so it is harmful to the environment and people. Almost zero. Since water-based paint is environmentally friendly, why don’t factories choose it in use? There are mainly the following reasons.
Applicability
Solvent-based paints, whether self-drying or drying, are less affected by the construction environment, while water-based paints with high-temperature drying are less affected by the construction environment. Self-drying at room temperature is greatly affected by the temperature and humidity of the construction environment. The same water-based paint will have different drying effects when constructed at different temperatures and humidity, which will affect the physical and chemical properties of the paint film. Under the extensive development model, everything is based on speed. Water-based paint has higher requirements on the construction environment than solvent-based paint, so the construction efficiency is relatively low, thus restricting its application. Aiming at this application shortcoming of water-based paint, our company has specially developed a water-based acrylic epoxy polyether polyurethane phosphate emulsion, in which acrylic plays the role of surface dryness and chemical resistance in the film-forming material, and epoxy plays the role of water resistance. And anti-corrosion, polyether plays a role in water solubility, polyurethane plays a role in aging resistance and enhanced physical and chemical effects, and phosphate ester plays a role in complex reaction with metals. The normal temperature self-drying water paint made of this emulsion not only has physical drying but also chemical drying during drying. It is dry and therefore less affected by the construction environment. This water paint has been used by a tourism equipment manufacturing company in Zhejiang, Wuhan Iron and Steel, and several domestic steel structure companies to achieve the same construction effect as solvent-based normal temperature self-drying paint. It breaks through the influence of temperature and humidity on the construction of water paint and greatly improves water quality. Paint construction efficiency, three-layer coating thickness 80um~120um, surface drying 10~120 minutes, hard drying 30 minutes~24 hours, adhesion 100/100 (cross-cut) after seven days of maintenance, impact ≥50kg/cm2, hardness ≥ HB, gloss ≥70 (60°), water resistance 72 hours, salt spray resistance 240 hours. Currently, this product has applied for a national invention patent.
Second price
The price of solvent-based paints such as alkyd brand products ranges from 7 yuan/kg to 18 yuan/kg. Some manufacturers even use waste oil and carcinogenic medical residues. The price of self-drying paint is only 5 yuan/kg. Because the development time of water-based paint is short, the core material water-based resin in the product is mainly imported, so the lowest price is more than 8 yuan/kg. The same water-based paint The price of alkyd paint is more than 30% higher than that of solvent-based alkyd paint. Therefore, if the customer and the Environmental Protection Bureau do not specify what environmentally friendly products to use, the manufacturer will inevitably choose cheaper products. Our company's water-based emulsion is an independent product. Research and development has now reached a production scale of 5,000 tons per year, so the price is the same as or even lower than that of solvent-based paints.
Three technical factors
Some paint factories pursue short, flat and fast performance and do not want to invest too much in research and development. Wuhan Yuanchangke Industry and Trade Co., Ltd. began to establish a professional water-based paint factory in 2001. The paint R&D team has invested a lot of manpower, material and financial resources from functional raw materials for synthetic water-based resins to water-based resins, and then formed more than thirty series and hundreds of varieties of complete water-based industrial paint products to meet different materials, different drying conditions, and different Customer demand for coating requirements.