What are the types of phenolic resin coatings? What are the characteristics of each?

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....

It is a kind of synthetic resin coating made of phenolic resin and dry grease. The coating film has the characteristics of hardness, wear resistance, water resistance, moisture resistance, chemical corrosion resistance, insulation and fast drying, easy to manufacture, more varieties, and raw materials are easy to obtain, moderately and easily constructed, and has been widely used in wood, furniture, construction, machinery, motors, ships and chemical anti-corrosion coating, etc., but the coating film is brittle, easy to yellow, and is not suitable for white paint and light-colored paint.

It can be roughly divided into 3 categories: alcohol-soluble phenolic resin paint, modified phenolic resin paint, and oil-soluble pure phenolic resin paint.

1. Alcohol-soluble phenolic resin, phenol and a kind of alcohol-soluble phenolic resin obtained by condensation in the presence of acidic or alkaline catalysts, can be made into solids, which are usually made into alcohol solutions. Thermosetting resins with alkali as catalyst, when in use) f'3. Heat or use acidic substances as catalytic brakes. A hard film can be obtained.

It is mainly used as anti-corrosion paint, and can also be used as a laminate and plywood erecting agent. Thermoplastic resin with acid as a catalyst enables Sichuan to solidify it under heating conditions with substances or in the presence of formaldehyde (such as adding hexamethylenetetramine). It is mainly used as a private agent for bakelite powder and grinding wheels, an additive for turning sand casting molds and improving rubber wear resistance, and also used for anti-corrosion paint, anti-corrosion cement and so on.

2. Compared with the unmodified alkyd resin, the water resistance, hardness, alkali resistance, solvent resistance and chemical resistance of modified phenolic resin paint have been significantly improved, but the weather resistance and color retention are poor. It is mainly used for the overlighting of some wood products and rattan tools.

3. Oil-soluble phenolic resin is commonly used to manufacture p-phenyl phenol and p-tert-butylphenol, which can be divided into short, medium and long oil degree 3 hours according to the proportion of oil, and xylene is used as the solvent for short oil, and 200 solvent gasoline or turpentine can be added in addition to xylene in addition to medium and long oil. Pure phenolic resin has very good resistance to water, acid, solvent and electrical insulation. When hot refining with dry oil, the paint film of the prepared paint is hard and tough, fast drying, good adhesion, weather resistance is slightly inferior to alkyd resin paint, and water resistance, chemical corrosion resistance is much better than alkyd resin paint.

Therefore, phenolic resin paint is suitable for underwater, outdoor and anti-corrosion. It has significant characteristics in various coatings used in ships, cans, chemical equipment, and electrical insulation. For example, the paint film on the inner wall of pure phenolic resin cans is tough, adheres to the wall, and can be resistant to acid and alkali.

The main varieties are pure phenolic phenolic resin hull paint, waterline paint. The spring equinox full primer has strong adhesion to metal, water resistance, damp heat resistance, chemical corrosion resistance, and can be matched with various topcoats, which is one of the important varieties of metal primers. The disadvantages of pure phenolic resin coatings are that they are easy to crust when stored, the paint film is easy to turn yellow, and the color is darker after baking.

Summary. Yes, it is an adhesive. Phenolic resin is an important synthetic resin material, which is widely used in the manufacture of adhesives in many fields.

Due to its advantages such as high strength, high temperature performance, and chemical resistance, it can be used to manufacture adhesive products such as glues, tapes, coatings, and adhesives of various materials.

Phenolic resin does not belong to the coating industry, it is an important synthetic wax resin material, mainly used in the manufacture of adhesives, plastics, orthopedic models and other products, widely used in construction, woodworking, automobiles, electronics, aviation and other fields. However, in some specific cases, phenolic resins can also be used as one of the raw materials for surface coatings, such as anti-corrosion coatings, high-temperature coatings resistant to inclusions, etc.

Is it an adhesive?

Yes, it is an adhesive. Phenolic resin is an important synthetic resin material that is widely used in the manufacture of adhesives in many fields. Due to its advantages of high strength hailstorm, high temperature performance and chemical resistance, it can be used to manufacture adhesive products such as glues, tapes, coatings, and adhesives of various materials.

Coatings are the most common and most frequently used building materials in our lives, and there are many coating products on the market, with different performance characteristics. Resin coatings are frequently used in industry, so what is resin coatings? Today, let's take a look through the following content introduction!

Resin coatings: Natural resin coatings.

1.The main state of the raw materials of natural resin coatings is sensitive to drying, and the solid or semi-solid organic substances leaked out by plants are processed and produced, and this kind of paint is easy to become soft after being heated, and it can also be melted. Natural resins do not dissolve in water due to their stress downflow effect, but they can dissolve in other solvents.

There are many natural resin materials, such as common plants such as rosin, amber, etc.

2.Natural resin coatings can be divided into three types of coating products according to the resin composition and resin formation process.

Pure resin, that is, resin coatings produced by the processing of terpenes and crude essential oils, this kind of paint is not easy to dissolve in water, but it is easy to dissolve in organic solvents such as rosin.

Containing gum resin, it can also be called gum resin, which is dissolved and processed by polysaccharides, which is not only soluble in water, but also expands, but insoluble in organic solvents.

Oleoresin can also be called flavored gum, which is mixed with too many essential oils and easily soluble resins in the production process, and the most important is fresh resin, such as mara resin.

Resin coatingsSynthetic resin coatings.

1.Synthetic resin paint is a polymer coating that is synthesized artificially, the coating is very viscous and can be easily softened after heating, but it is affected by temperature. Under the action of physical external forces, it is in a plastic flow state, which is very similar to natural resin in some ways.

This kind of coating is mainly used in the manufacture of plastic shengfan caves, and additives can also be added to process and shape the coating.

2.In fact, synthetic resin coatings are also widely used in the production of fibers, binders, and insulating materials, and there are many types of coatings. It can be divided into a variety of link structures, such as carbon chain, non-carbon chain, etc., and can be divided into two series according to synthesis, and in practical use, it can be divided into two categories of thermoplastic and thermosetting coatings.

3.The raw materials of synthetic resin coatings are abundant, before the use of petroleum and calcium carbide acetylene, at present, natural gas is mostly used for extraction, such as ethylene, formaldehyde, etc., and then extracted through a variety of series of methods, such as bulk polymerization, interfacial polycondensation, etc., this method effectively reduces the production cost and makes the coating product more abundant.

Phenolic resin is a material used in the manufacture of composite materials and plastic products. Here are some well-known manufacturers that use phenolic resins for your reference:1

Jindong Chemical Group ****2Kirin Chemical Group ****3American Standard Chemical****4

Shanghai Wanbang Chemical Materials****5Dalian Shenghui Chemical****6Beijing Changping Xinhao composite materials ****7

Shenyang Huayu Chemical Materials****8Anhui Xinyun Chemical **** Note, this is only a part of it, there are many other companies are also using phenolic resin for production, you can choose the right manufacturer according to your needs and actual situation. Due to the rapid changes in the industry, this information may be outdated, and it is recommended that you check and confirm it in real time during the use of phenolic resins.