The hottest water-based paint is very popular in t

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Water based paint is very popular in the industrial market

water based paint is very popular in the industrial market

February 23, 2021

water based paint is a paint with water as diluent and no organic solvent. It is non-toxic, non irritating, harmless to human body, does not pollute the environment, has a plump film, good flexibility, and has the characteristics of water resistance, wear resistance, aging resistance, yellowing resistance, easy to use, etc. Water based paint includes water-soluble paint, water dilution paint and water dispersible paint

water paint has the characteristics of energy conservation and environmental protection, non combustion and non explosion, ultra-low emission, low carbon and health. It can be widely used in wood, metal, industrial coating, plastic, glass, building surface and other materials. From a long-term perspective, water-based coating is the trend of future development

for automotive coatings: with the rapid development of the automotive industry, the amount of automotive coatings is also increasing. Automotive coatings mainly include primer, intermediate coat and finishing coat, of which the finishing coat is divided into natural color paint and metal flash paint. The hydration process of automotive coatings is carried out gradually from bottom to surface. At present, more than 90% of the primers have adopted water-based coatings, 88% of the automotive intermediate coatings have also adopted water-based technology, and the application of water-based metal flash primer has exceeded 65%

the successful application of water-based coatings in the automotive industry mainly benefits from the following aspects: first, water-based coatings are low-carbon and environmentally friendly. Compared with traditional oil-based paint, VOC emission of water-based paint is 70% lower than that of oil-based paint, which is conducive to environmental protection and conforms to the development trend of low-carbon environmental protection

second, the water-based coating itself has excellent performance. In terms of vehicle painting, the water-based paint has better leveling, adhesion and wear resistance, which makes the freshness and fullness of the finish paint higher, and is resistant to stone strike and scratch. Using water-based paint for touch up, the color and efficacy are closer to the original quality, and more in line with the consumer needs of car owners

third, water-based coatings are the main trend of the development of the automotive industry. From the perspective of the coating industry, replacing oil-based coatings with water-based coatings is conducive to the reorganization of resources in the industry and the survival of the fittest. Taking the lead in adopting water-based coatings will help to seize the opportunity in the future development of the automotive market

fourth, the application of water-based coatings helps to reflect the society of automobile enterprises and enhance their corporate image. Water based automotive coatings have good performance and low-carbon environmental protection, which can not only improve the service quality and image of automotive enterprises, but also have positive significance for environmental protection and help shape the image of enterprises as a society

fifthly, the application of water-based coatings provides a safer and healthier environment for automobile painters. The proportion of harmful substances contained in water-based coatings is low, which helps to protect the health of painters

used for: railway vehicle coating body coating mostly uses traditional solvent based coating, which contains a large amount of organic solvents, which brings inconvenience and potential safety hazards to storage, transportation and construction. Harmful gases released during the production and use of solvent based coatings will have a negative impact on the health of production staff and the atmospheric environment that cannot be ignored. At present, the localization and hydration process of coatings in the field of vehicle, high-speed rail and rail transit to ensure that the movement of the beam will not exceed the scope, resulting in the damage of fixtures or devices, has entered the work plan of the general railway administration

however, the following matters should be paid attention to in the use of water-based paint railway vehicles: 1. The better state of the coating environment is room temperature, the relative humidity is below 70%, and there is gentle ventilation. Under this condition, the rapid evaporation of water can be guaranteed. The coating effect will be affected if the ambient temperature is lower than 10 ℃ or higher than 30 ℃, such as sagging, prickly heat, orange peel, bubbles and other ills

2. The manufacturer needs to cooperate to solve the problem of brush sagging. Use a soft brush, which is required to be lint free, soft and strong in water absorption. Smooth out the loose hairs before use, wash them with clean water, and then use them after drying. The brush must be wetted with water in advance before dipping in paint, but there must be no dripping water, otherwise the paint brush will soon dry and be scrapped, or the paint in the paint brush will become dry and slag, which will affect the quality of the film

3. The parts in contact with paint liquid in spraying facilities and tools shall be protected with stainless steel or polytetrafluoroethylene lining, preferably without aluminum parts. Because the additives in water-based resins and coatings may contain substances that can react with aluminum and aluminum alloys, these compounds will cause pitting corrosion and pulverization of aluminum materials, as well as pollution and discoloration of paint solution

4. Treat the abrasive cloth used for grinding before grinding. Do not use the abrasive cloth containing stearate, otherwise the residue of stearate after grinding may cause shrinkage

5. Preparation of water-based paint before use. The paint solution should be fully stirred before use, and do not mix the paint by shaking. In order to ensure the painting quality, the water-based paint must be filtered with more than 200 meshes before use

6. The coating and film treatment of water-based paint depend on the quality and effect of the product coating requirements. Generally, two coatings can achieve good results. When high fullness is required, the number of coating passes should be increased, and the drying time should be appropriately extended to more than 4H. Before painting, the compatibility between the water-based paint and primer must be confirmed. The oily system must be dried for at least 24h before painting the water-based paint. Before painting the water-based paint, it must be fully polished and cleaned. Although the water-based paint surface dries quickly, it takes a long time for the water in the paint film to escape completely. Usually, it can reach the final strength after 7 days of drying (the winter time should be extended appropriately)

for: heavy-duty anti-corrosion coatings. Corrosion and rust of metal products can be seen everywhere in daily life, causing waste of resources and energy, economic losses, and sometimes even endangering personal safety. The development of environmental friendly industrial heavy-duty anticorrosive coatings is a high-tech project being actively explored by coating experts in many developed countries around the world, and it is an emerging field in China. In some typical Heavy-duty Coatings Markets, such as infrastructure, oil and gas, electricity, barrel tanks, marine and chemical industries, the use of water-based coatings is increasing. Water based alkyd system, water-based epoxy system (epoxy micaceous iron midcoat and epoxy zinc rich primer), water-based inorganic zinc rich system, and water-based epoxy ester system are used in the field of heavy corrosion protection

the application of water-based paint in the field of heavy-duty anti-corrosion paint is on the rise, such as infrastructure, oil and gas and power industries, as well as industrial tanks, shipbuilding and chemical industries. The best representative of water-based paint in the field of heavy corrosion protection is water-based inorganic zinc rich primer

the practical application shows that the waterborne inorganic zinc rich primer can provide effective protection for steel under extreme conditions. Since water is their main solvent, water can also be used to clean and dilute waterborne paints. They are not easy to use and have almost no solvent taste. At the same time, the use of water-based paint can also bring lower costs to users. Fast drying (which can save time), low flammability (which can reduce insurance costs), less indoor ventilation (which can reduce energy consumption), and no need for solvents and cleaning agents. Using a single-layer coating (such as a thick film inorganic zinc silicate coating) can save downtime and scaffolding costs. With the hydration of epoxy zinc rich primer, epoxy micaceous iron intermediate paint and acrylic polyurethane finish paint, which are most widely used in the field of traditional anti-corrosion coatings, water-based anti-corrosion coatings have been able to meet the vast majority of anti-corrosion conditions

for: water based container coatings most of the container coatings used worldwide are solvent based. During the production and painting of containers, a large number of harmful gases will be produced, which will not only endanger the health of painting operators, but also cause environmental pollution. With the increasingly stringent environmental protection regulations, the International Commission for container standardization has put forward higher requirements for the environmental protection and hygiene of container coatings: for example, the coatings shall not contain heavy metals such as CD, Pb, Cr, Hg; Non toxic pigments such as phosphate are used; High solid content, low VOC, etc. The substitution of acrylic topcoat for chlorinated rubber topcoat and special paint for box bottom has also been gradually promoted. Water based container coatings have been applied on a pilot basis in China

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