What is the difference between water based acrylic resin water based polyurethane resin and water ba

When choosing an epoxy adhesive, a number of factors should be considered. Here are some small experiences that I hope will help you. As a high-performance, high-value-added adhesive, epoxy resin adhesive is highly valued by the industry, but at the same time, counterfeit and shoddy products are often patronized.

Therefore, we can identify it by the following chemical methods. The first method: dissolve the sample in sulfuric acid, then add concentrated nitric acid, and pour a large amount of sodium hydroxide solution, if it is yellow, it is generally epoxy resin.

The second type: drop 5 drops of concentrated nitric acid on the resin adhesive film, move the reactant into the test tube after a few minutes, add 6ml of acetone and then add potassium hydroxide ethanol solution to make it alkaline, if it turns from red to purple, it indicates that it contains epoxy resin glue containing bisphenol A type, this method is also intuitive; Method 3: Take....

Water-based acrylic resins: including acrylic resin emulsions, acrylic resin aqueous dispersions (also known as water-dilutable acrylics) and acrylic resin aqueous solutions. Emulsions are mainly synthesized by emulsification of oleole monomers in water under the initiation of aqueous radical initiators, while resin aqueous dispersions are synthesized by different processes such as free radical solution polymerization or stepwise solution polymerization.

Acrylic emulsion is mainly used as a base material for latex paint, and occupies an important application in the architectural coatings market, and its application is still expanding; In recent years, the development and application of acrylic resin aqueous dispersions have attracted more and more attention, and the application in the field of industrial coatings and civil coatings has been expanding. According to the monomer composition, it is usually divided into pure acrylic emulsion, styrene acrylic emulsion, acetic acrylic emulsion, silicone acrylic emulsion, tertiary vinegar (tertiary carbonate-vinyl acetate) emulsion, tert-acrylic (tertiary carbonate-acrylate) emulsion, etc.

Waterborne polyurethane resin: It is an extremely fine aliphatic polyurethane dispersion. It is mainly used to improve the adhesion of the finish, and has an ultra-fine and elongated film, excellent cold resistance, but does not overfill the grain.

Specially designed for substrate bonding. Waterborne polyurethane resins are often used in the adhesive layer, which can be added to 20-30% of the resin amount, and the hardness of the coating film can be adjusted with other resins.

We all know that the decoration materials are various, and this kind of focus is on some wall materials, which are used more or paint under normal circumstances, so when choosing, you can choose which one is more suitable according to the actual situation. Let's introduce to you what is the difference between waterborne polyurethane and oily polyurethane.

Refers to different ones. 1. Water-based: It is a new type of polyurethane system, which uses water as the solvent and has no pollution.

2. Oily: This kind of polyurethane system with thermoplasticity.

The characteristics are different. 1. Water-based: It is a product with no pollution and high safety, and its compatibility is good.

2. Oiliness: Compared with PVC foam material, it has better stability, and also has the advantages of heat insulation, earthquake resistance, and anti-virus performance.

What are the characteristics of paint.

1. Good decoration.

The place where the exterior wall paint is relatively touched more is the building area, so it will be richer in terms of color, and it can also maintain its decorative properties.

2. Good weather resistance.

The exterior wall is directly exposed, so it must withstand the effects of wind and sun, if it is this hail environment for a long time, it is easy to make its coating crack, peeling and other phenomena, so that the protective function is lost.

3. Good stain resistance.

China's environmental conditions are not very good, especially in places like heavy industry and mining, there is a lot of dust in the air, which will make the wall lose its original decorative effect, and the cover will affect the appearance. Therefore, it is particularly important to use a stain-resistant paint, and it can also clean the contamination on it.

4. Good water resistance.

Exterior paints are directly exposed to the outside and must have good water resistance in order to prevent rainwater from washing.

Summary: What is the difference between water-based polyurethane and oil-based polyurethane, the relevant content is introduced here, and they can be seen from the above points, and the choice can be determined according to the actual use. If you want to know more about related knowledge, you can consult Qijia.com.

Component copy differences:

Water-based acrylic paint is a one-component coating, no need to add curing agent, no gelling time limit, easy construction, acrylic resin as the main film-forming substance.

Water-based acrylic polyurethane paint is a two-component coating, a special curing agent is added, a cross-linking curing reaction occurs to dry and form a film, and the mixed paint is used up in 4 hours to avoid gelatinization of the coating.

Weather Resistance Difference:

Water-based acrylic paint has average weather resistance, and the outdoor application time is not as long as that of acrylic polyurethane paint.

Water-based acrylic polyurethane paint is a high weather resistant coating, which does not chalk the paint film for long-term application and has excellent ultraviolet resistance.

Corrosion Resistance Difference:

Water-based acrylic paint is used in general or moderate corrosive environments, such as ordinary atmospheric environments, and has general corrosion resistance.

Waterborne acrylic polyurethane paint is used in medium or harsh corrosive environments, such as industrial environments, coastal environments, and has strong corrosion resistance.

Appearance difference: water-based acrylic paint can be modulated with a variety of colors and metallic colors, the paint film is bright, but the gloss is not high.

Water-based acrylic polyurethane paint can modulate a variety of colors and metallic colors, and the gloss of the coating film is high, which can reach 90°, and the appearance is more decorative.

Differences in application areas:

Water-based acrylic paint is used for protective coating of steel structures, machinery, equipment, instruments, workpieces, etc.

Water-based acrylic polyurethane paint is used for the coating of bridges, pipelines, buildings, steel structures, vehicles, machinery and equipment, and various parts.

The comprehensive characteristics of water-based acrylic polyurethane paint are stronger than those of water-based acrylic paint.

The classification of waterborne polyurethane resins --- based on the overall knot of polyurethane resins.

Due to the diversity of polyurethane raw materials and formulations, waterborne polyurethane resins have been developed for about 40 years, and many preparation methods and preparation formulas have been studied. There are many varieties of waterborne polyurethanes, which can be classified in a variety of ways.

1) Polyurethane resin can be divided into polyurethane emulsion, vinyl polyurethane emulsion, polyisocyanate emulsion, and closed polyurethane emulsion according to raw materials and structure. Polyurethane emulsion refers to the emulsion formed by dispersing polyurethane in water by using oligomer polyols, chain extenders and diisocyanates as raw materials and prepared by pure and normal methods before general lifting. Vinyl polyurethane emulsion generally refers to the emulsion formed by adding isocyanate to the aqueous solution or emulsion of vinyl resin, which is a two-component system.

Polyisocyanate emulsion refers to the emulsion formed by emulsifying polyisocyanates containing hydrophilic groups in water, or the organic solution of polyisocyanates dispersed in water containing emulsifiers. Blocked isocyanate emulsion refers to polyurethane emulsion containing blocked isocyanate groups in the molecule, which is a stable one-component system. In the preparation of polyurethane emulsions, the company introduces a closed isocyanate group, and can also make an emulsion with a high content of closed isocyanate group, which is used for blending with other emulsion systems to play a cross-linking role, and the water is heated and cross-linked after evaporation

2) Polyurethane emulsion can also be subdivided into polyurethane emulsion and polyurethane-urea emulsion, the latter refers to the emulsion formed by the dispersion of polyurethane prepolymer in water and the expansion of the chain through water or diamine, which essentially generates polyurethane-urea, but because the preparation of the polyurethane emulsion by the prepolymer dispersion method is more common, it is customary to call the polyurethane emulsion the majority.

3) Polyurethane resins can be divided into linear molecular polyurethane emulsions (thermoplastic) and cross-linked polyurethane emulsions (thermoset) according to their molecular structure. The cross-linked type can be subdivided into internal cross-linked and diplomatic cross-linked type. The internal polyurethane emulsion is a stable one-component system that forms a certain degree of branched cross-linked molecular structure during synthesis, or introduces a thermally reactive group.

It is a two-component system by adding a crosslinker that can react with the groups in the polyurethane molecular chain to the emulsion.

With the continuous development of the polyurethane industry, more and more industries and enterprises use polyurethane, which is widely used in polyurethane materials, which can replace rubber, plastic, nylon, etc., and is used in various construction fields. Waterborne polyurethane is a new type of polyurethane system that replaces organic solvent as the dispersion medium, also known as water-dispersed polyurethane, water-based polyurethane or water-based polyurethane. Waterborne polyurethane uses water as the solvent, which has the advantages of no pollution, safe and reliable, excellent mechanical properties, good compatibility, and easy modification.

Next, I will introduce to you the difference between waterborne polyurethane and oil-based polyurethane.

The water-soluble polyurethane chemical grouting material has a large water content and a large permeability radius, which is suitable for the plugging and water inflow of the moving water formation, and the consolidation and protection of the shallow soil layer and the surface layer. And because the water-soluble polyurethane chemical grouting material has good elasticity, it is most suitable for the anti-seepage and leakage plugging of concrete dynamic joints.

The difference between water-based polyurethane and oil-based polyurethane is two.

The water-soluble polyurethane chemical grouting material is pale yellow, and the oil-based polyurethane plugging agent is dark brown.

This is the most obvious difference between the two products. The difference between waterborne polyurethane and oily polyurethane is three.

Oil-soluble polyurethane chemical grouting material is commonly known as "cyanide" in China, and the consolidated body formed by it has high strength and good anti-permeability, which is suitable for reinforcing the foundation and sheltering forest water plugging projects. At the same time, the oil-soluble polyurethane chemical grouting material has little elasticity.

Therefore, it is more suitable for anti-seepage plugging and reinforcement of concrete static joints. The difference between water-based polyurethane and oil-based polyurethane is four.

The so-called oiliness refers to oil solubility, and the coating uses xylene, propylene and gasoline as solvents, while polyurethane can reach nearly 100% solid content without solvent. Not all paints are only water-soluble and oil-soluble.

Hello, I am happy to serve you and give you the following answers: waterborne polyurethane and water-based epoxy resin blend generally have good weather resistance, but it will also be affected by the external environment, if the temperature is too high or the humidity is too large, it will affect the weather resistance. In general, waterborne polyurethane and waterborne epoxy resin are blended with good weather resistance, but if the temperature is too high or the humidity is too high, it will affect the weather resistance.

Solution: 1. First of all, the ambient temperature and humidity should be controlled, and the temperature and humidity should be kept within the appropriate range to ensure that the water-based polyurethane and water-based epoxy resin are blended with good weather resistance. 2. Secondly, the appropriate coating should be selected, and the weather resistance of the coating will also affect the weather resistance of water-based polyurethane and water-based epoxy resin, so we should choose a Xiaoshi coating with good weather resistance.

3. Finally, attention should be paid to the construction process, which will also affect the weather resistance of waterborne polyurethane and water-based epoxy resin, so we should pay attention to the construction process to ensure that the water-based polyurethane and water-based epoxy resin are blended with good weather resistance. Personal experience: waterborne polyurethane and water-based epoxy resin blend generally have good weather resistance, but it will also be affected by the external environment, so attention should be paid to controlling the ambient temperature and humidity, choosing the appropriate coating, and paying attention to the construction process to ensure that the water-based polyurethane and water-based epoxy resin blend has good weather resistance.