Industry | Environmentally friendly water-based coatings are really environmentally friendly?

In recent years, environmental protection inspections have become more and more stringent, and the state has also introduced a number of policies to restrict the use of paint.
In 2015, the state imposed a 4% paint consumption tax on paint companies, and various provinces and cities across the country have successively introduced "oil restriction orders" and "bans".
Oil Order".
Efficient and environmentally friendly water-based coatings and powder coatings have become the new development direction of the coatings market.

"Water-based paint", "water-based paint", "water-based paint", "environmentally friendly water-based paint" and "environmentally-friendly water-based paint" have occupied the sales market in recent years, so are water-based paints really environmentally friendly?
What is an environmentally-friendly water-based paint ? What is an environmentally- friendly water-based paint ? Coatings that
only need water as a solvent or as a dispersion medium can be called water-based paints.
The composition of water-based coatings includes water-based resins, pigments and fillers, additives, water and so on.
Water-based paints are generally divided into water-soluble paints, water-reducible paints, and water-dispersible paints (latex paints).

Is there water pollution in the production process of environmentally friendly water-based coatings? Is there water pollution in the production process of environmentally friendly water-based coatings?
The water-based paint itself is environmentally friendly, but some of the sewage, sewage, waste liquid, waste residue and other chemical substances produced in the production process have no less water pollution than oil-based paints! There are many equipment to be cleaned in the production and processing of water-based coatings, such as paint mixing tanks, filters and filter media, storage tanks, etc.
, which are complicated to clean, and the waste liquid after cleaning is not easy to handle.
In addition, the production, processing, transportation, and storage of materials need to be cleaned when they run, leak, drip, leak, or safety accidents.
This part of the cleaning water occurs at random locations, and it is difficult to completely remove water pollution.

Therefore, water-based coatings are currently in the water treatment (paint mist flocculation, COD exceeding standard, sewage discharge, etc.
).
The sewage in the coating process can be treated and monitored as a very critical link.
The promotion and popularization of supporting technologies is also very important.
of!
However, oil-based coatings will inevitably produce a large amount of VOC or sewage after processing, coating, and film formation.
This is not a complete solution simply by investing in environmental protection equipment.
Due to the advantages of water-based paints in their formulations, water-based paints can effectively control water pollution only by controlling the harmless treatment of pollutants at both ends of production, processing and painting.

Are environmentally friendly water-based coatings really zero VOCs emissions? Are environmentally friendly water-based coatings really zero VOCs emissions?
The biggest advantage of water-based paint is its low VOCs emissions.
However, it cannot be denied that it is still a paint, with resins, additives, pigments and fillers in it.
The film-forming of water-based paint is formed by extruding and finally cross-linking the polymer particles with the volatilization of water.
Its VOC emission is extremely low, accounting for only 0%-10% of oil-based paint, which can minimize air pollution and Hazard to human health.
70%-90% of its composition is water that is harmless to the human body and the environment.
There is no need to add organic solvents and harmful substances such as formaldehyde, lead, and chromium during the production process.

Water-based paint is indeed more environmentally friendly, but it is not zero VOCs emissions.
Its water pollution to the atmosphere is only reduced compared to paint, but it does not mean that there is no water pollution.
Compared with the zero VOCs emission of powder coatings, water-based coatings are still lacking.

Is it possible to completely "ban oil"? Is it possible to completely "ban oil"?
On the one hand, the biggest reason for the future trend of "water-based" comes from the advancement of national policies.
Increasingly stringent environmental protection regulations and tax adjustments are used to force coating companies to transform and upgrade; at the same time, end users’ growing awareness of health and environmental protection and consumption levels The improvement has made the acceptance of high-priced products increasingly higher.
However, "oil to water" is also facing pressure from many aspects.

In the production stage, environmentally friendly water-based coatings have higher production technical standards and relatively more complex processes, especially higher regulations on the stability of product performance, and higher production costs.
In the coating stage, water-based coatings have high requirements for the surface cleanliness of the material, high corrosion to the coating equipment, and strict requirements on the construction environmental conditions (temperature, humidity), which increase the investment in temperature and humidity control equipment, so the construction is more difficult .
In the use stage, water-based paints are not as good as oil-based paints in terms of hardness, fullness, weather resistance and other decorative effects.
Consumers with high indoor environment regulations may even re-decorate after 3-5 years, which unreasonably increases the maintenance of consumers cost.

Therefore, a complete "fuel ban" is imperative, but it cannot be completed in the short term.

How to develop environmentally friendly water-based coatings in the end How to develop environmentally-friendly water-based coatings in the endThe development of water-based coatings in my country is still limited to building interior and exterior wall paints.
Water-based industrial coatings are still in their infancy, but their market demand is growing rapidly.
In-depth discussion and development are needed in the research and development of basic materials, the synthesis of film-forming substances, the innovation of film-forming mechanism, the improvement of production processes, the reduction of manufacturing costs, and the improvement and specification of coating processes.

After overcoming key technologies, water-based coatings will achieve rapid growth.
In the next two years, environmentally-friendly water-based coatings will occupy more than 50% of the domestic industrial chain market.
Under this major change in the upgrading of the industrial structure, the market structure of the coatings industry will undergo tremendous changes.