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Knowledge of waterborne resin coatings

06

2020-05

How to solve the problem of poor corrosion resistance of automobile electrophoretic paint film?

As we all know, automobile coating is a very complicated process in the automobile manufacturing process. Its main purpose is to make the coated object achieve a certain degree of decoration, corrosion resistance, and surface protection. However, in the process of electrophoretic coating, sometimes due to various reasons, the problem of poor corrosion resistance of automobile electrophoretic paint film appears. At this time, how to solve the problem of poor corrosion resistance of automobile electrophoretic paint film? First of all, the phenomenon of poor corrosion resistance of automobile electrophoretic paint film should be analyzed, and then according to the causes, targeted to solve the problem. Here are professionals to introduce the causes of poor corrosion resistance of automobile electrophoretic paint film and its prevention and control methods: common causes of poor corrosion resistance of Feiyang automobile electrophoretic paint film: 1. The thickness of the paint film is not enough. 2. The quality of the pre-treatment phosphating film is poor, the phosphating film is too thin, the upper film is incomplete, rust, etc. 3. The curing of the electrophoretic paint film is not complete enough. 4. The content of impurity ions in the paint is too much, resulting in mixing into the car electrophoretic paint film during deposition. Prevention and control methods: 1. Strengthen control to ensure that the thickness of the electrophoretic paint film is within the scope of the index. 2, strengthen the pre-treatment control, to ensure that the phosphating film is uniform, complete and dense. 3, strengthen the barbecue control: time, temperature, and dryness of the inspection, to ensure that the film is fully cured. 4. Strengthen the pre-treatment water washing to ensure the pure water quality and washing effect; Remove impurity ions through cathode diaphragm or discharge ultrafiltrate.

2020-05-06

06

2020-05

Development Trend of Waterborne Coatings Industry

With the progress of science and technology and the rapid development of the national economy, people's awareness of environmental protection is increasing, the requirements for health are getting higher and higher, environmental protection regulations are becoming more and more perfect, saving money and energy, protecting the environment, has become the main problem facing the global coating interface. The development of water-based paint has received worldwide attention: in developed countries in Europe and America, the penetration rate of water-based paint has reached more than 80%. The coating industry can be roughly divided into three application areas, and water-based coatings occupy a considerable proportion in the two largest application areas. In the field of architectural coatings, water-based coatings have an absolute advantage in industrialized countries, such as 93% in Germany, even in Western Europe.

2020-05-06

06

2020-05

Water-based coatings in the next 5 years or up to 60% market share

In the past 10 years, although China's total output of coatings increased from 2.98 million tons in 2004 to 13.0335 million tons in 2013, the growth rate decreased from 23.45 to 3.58, and the total output value of the coatings industry increased from 53991.1 million yuan in 2004 to 34167.76 million yuan in 2013, but the growth rate decreased from 26.13 to 9.51. It is expected that the output growth rate in 2014 will be difficult to return to the double-digit era and may rise steadily from 3.58 in 2013. The average price of 26200 yuan/ton of paint in 2013 was the second highest point in the history of the paint industry, only lower than the average price of 28600 yuan/ton of paint during the 2008 financial crisis, which was the second highest point in the history of the paint industry, and only lower than the abnormal price of 28600 yuan/ton during the 2008 financial crisis. The data shows that the coating industry has entered the era of micro-growth. The development of water-based coatings by domestic paint companies is undoubtedly the biggest benefit to the environment, and it can also reduce the price of water-based paint products on the market and benefit consumers. However, to replace oil-based coatings with water-based coatings, it is not only necessary to transform the original coating line, but also very different in the production process, which is bound to produce huge transformation costs. Coatings companies should proceed step by step, not in a hurry, and avoid letting immature water-based coating products flow to the market. Quality upgrades still need to work hard. Although water-based coatings are beginning to be accepted and recognized by more consumers, it is still the world of oil-based coatings for the larger medium and low consumer market. Some data show that the utilization rate of water-based coatings in Europe has reached 80%, and since 2004, the European Union has banned the production, sale and use of paint. China has deservedly become the largest country in the production and consumption of coatings. However, the global coating network learned that the use of water-based coatings in China is far behind the United States and Europe. At present, the utilization rate of water-based coatings in China is less than 10%, and only 30% in developed cities such as Beijing and Shanghai. The market presents a pattern of "hot industry and cold market. "2015-2020 China Waterborne Coatings Industry Investment Value Research Report" shows that in the face of increasingly stringent environmental protection policies, whether it is coating raw material suppliers, or coating manufacturers, coating equipment, coating equipment manufacturers, are focusing on water-based coatings And other environmental protection products to accelerate the transformation and development. Some foreign-funded enterprises are also optimistic about China's water-based paint market, have established water-based paint production base, improve the proportion of water-based paint products. The demand for water-based coatings in the Chinese market is increasing, and it has become an indispensable auxiliary material in the construction, furniture, automobile and other industries. In addition, with the increasingly powerful development of China's coatings industry, the water-based coatings market is bound to be driven by the overall upward trend of coatings and get a share. In the next 5 years, the market share of water-based coatings in China may reach about 60%.

2020-05-06

06

2020-05

Water-based self-rotating rust anticorrosive paint product features

Water-based self-rotating rust anticorrosive paint is a single component, using water-based acrylic acid, special monomer copolymerization of water-based modified copolymer, due to the selection of self-emulsifying "core-shell" structure of water-based special emulsion, rust transfer raw materials and non-toxic anti-rust pigment. The coating provides long-term and efficient protection for rusty steel surfaces without pretreatment, which not only significantly prolongs the service life of anti-corrosion topcoat, but also makes the anti-corrosion coating process simpler, more efficient, economical and environmentally friendly. The new method is based on a new chemical chelation method to convert the rust on the iron surface into a hydrophobic passivation layer. Compared with the traditional system, the rust conversion anti-corrosion system provides longer-term protection before re-corrosion occurs. The high-molecular polymer molecules coated on the rusted metal surface are aligned in the film formation: one end of many anchoring groups on the polymer chain is bonded with iron ions such as Fe(OH)2\Fe(OH)3, FeO\Fe2O3, which are the main components of rust, to form highly stable chemical coordination bonds, and the other end forms a typical hydrophobic barrier. On the metal surface, anodic/partial cathodic protection is formed. Organic molecules firmly combined with the metal surface process called coordination or chelation, the formation of a three-dimensional structure of the network film, with high hardness and strong adhesion, water resistance, salt resistance, alkali resistance, acid resistance. In order to obtain effective and durable corrosion inhibition effect and anti-rust purpose. Design purposes: the product is a high-grade water-based rotating rust paint, due to the unique mechanism, scientific design, advanced technology, excellent performance, widely on the rust without pretreatment of the steel surface to provide long-term protection, not only significantly extend the service life of anti-corrosion paint, and anti-corrosion coating process is more simple, efficient, economic and environmental protection. Product features: 1. Simple operation and saving working hours. It requires less surface treatment than other steel anti-corrosion coating technologies. It does not need to polish rust, water washing, pickling, sandblasting, phosphating, etc., and anti-corrosion coating becomes very simple. 2, reduce the construction intensity and cost, improve the coating efficiency, especially for mechanical rust removal can not reach the special-shaped structure effect advantage is more obvious 3.PH neutral, no corrosion to the steel substrate. 3, catalytic reactivity, get a dense black inert protective layer, excellent anti-corrosion performance. 4. Low odor, water-based system, very low VOC, no lead, acid, no flammable solvents. 5. It has longer anti-corrosion protection than ordinary rust transfer system, and improves the service life of anti-corrosion topcoat several times. Good tolerance to surface iron chloride impurities, which is very important for ship systems. 7, easy construction, can be used for dry or wet rust surface. 8, and most of the commercially available solvent-based (acrylic, polyurethane, epoxy, alkyd, amino, etc.) paint matching is good, and will not occur and topcoat stratification and bleeding. 9. Physical parameters: paint surface: flat color: light yellow milky liquid, solid content,>: 45±1% PH:7 theoretical coating rate: about 20-300m/kg (dry film thickness below 10 microns) temperature resistance: maximum (dry) 120 ℃ flash point: no specific gravity: about 1.15kg/liter finger touch dry: about 30-40 minutes (23 ℃ 2 ℃) complete curing: 7 days (20 ℃) storage time: 1 year (20 ℃)

2020-05-06

06

2020-05

The future of the paint industry four new coatings popular

At present, the primary work of the coating industry is to develop four types of environmentally friendly coatings. Secondly, it will take time to achieve this goal, and solvent-based coatings also occupy a considerable proportion of the transition stage. It is also an important work to replace toxic solvents with efficient and non-toxic solvents. From the concept of sustainable development, the development of renewable organic solvent resources is the third task in front of paint workers. The coatings industry will focus on the development of four types of environmentally friendly coatings in the future, including: the first, high-solid coatings, the solvent-based coatings with high solid content (HSSC), also known as VOC, solvent-based coatings. traditional solvent-based

2020-05-06

02

2020-12

Why is waterborne epoxy ester resin not transparent?

Due to the advantages of high bonding strength, wide bonding surface, low shrinkage, good stability, excellent electrical insulation, high mechanical strength and good processability, waterborne epoxy ester resin is widely used in electrical insulation casting, anti-corrosion coating, metal bonding and other fields. But many people will ask why water-based epoxy ester resin is not transparent. Today, water-based epoxy ester resin manufacturers will answer this question!

2020-12-02

Why is waterborne epoxy ester resin not transparent?
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