Which kind of curing agent should be added to the paint of epoxy resin?

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....

Because the different curing agents will directly affect the process of the product and the physical and chemical properties of the product, it is very important to select these epoxy resin curing agents according to the application. For example, is the curing process cured at room temperature or heated curing? Is the product required to be hard or soft?

Is it required to withstand high temperatures or low temperatures? Is the environment wet or dry? The hardener used varies from occasion to occasion.

In short, it is necessary to choose the appropriate curing agent according to the actual situation, so as to give full play to the best performance of the epoxy resin system used.

The epoxy resin curing agent is made of phenol, formaldehyde, ethylenediamine, p-tert-butylphenol, n-butanol glycidyl ether, polypropylene glycidyl ether and other raw material components.

Epoxy curing agents are used as epoxy resin-based adhesives in the field of material technology. Provide epoxy resin curing agent with special properties under special conditions such as low temperature and underwater.

It is characterized by the ratio of raw materials such as phenol, formaldehyde, ethylenediamine, p-tert-butylphenol, n-butanol glycidyl ether, polypropylene glycidyl ether and other raw materials. It is better than general curing agent, and has positive effects such as low temperature curing, water curing, fast curing, oil resistance, flame resistance, good toughness, and easy to use.

Under the change of the ratio of the two proportions, add more curing (50% 100%) agents appropriately. Mix thoroughly, and it can also be warmed during curing (if the electronic components are not damaged).

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Polyurethane paint, epoxy curing agent can't be added, can't be added.

Epoxy resin paints need to be cured with amine curing agents, while polyurethane paints need to be cured with polyamide curing agents. The two cannot be mixed, otherwise the performance of the coating will not meet the requirements at all!

Polyurethane paint, plus epoxy curing agent.

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Polyurethane paint, plus macro trace epoxy curing agent is not good, can not add epoxy resin oil Linghe paint needs to add amine curing agent for curing, and polyurethane paint needs to add polyamide curing agent for curing. The two should not be mixed together, otherwise the performance of the coating will not meet the requirements at all!

1. Epoxy curing agent is a solid additive, its main role is to make linear resin into a tough body solid, most friends do not know what this kind of substance is used for, epoxy curing agent because of good mechanical properties, electrical properties and chemical resistance, widely used in various industries. In the epoxy construction, the reinforcing agent must be reinforced, and a fixed telephone reaction needs to occur under certain circumstances to produce network structure products, so the epoxy curing agent plays a decisive role in the epoxy construction to a certain extent. 2. Epoxy resin must react with the curing agent to generate a three-way three-dimensional structure to have practical value.

Therefore, the structure and quality of the curing agent will directly affect the application effect of epoxy resin. 3. As a resin matrix for adhesives, coatings and composite materials, epoxy trapped liquid resin curing agent is widely used in construction, machinery, electronic and electrical, aerospace and other fields.

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Hello, thank you for your consultation, about your questions, the answers for you are as follows: epoxy resin curing agent and paint curing agent have different chemical structures and properties, so they cannot be universal. An epoxy curing agent is a chemical used to cure epoxy resins, commonly used in the production of adhesives, coatings, sealants, or segments and composites.

Paint hardener is a chemical used to cure paints and is commonly used in the production of various types of paints and coatings. While both hardeners can be used to cure coatings, they are formulated and used differently and therefore cannot be substituted for each other. 

There are many types of epoxy resin curing agent, it is a kind of reticular three-dimensional polymer that can react with epoxy resin to form a network of solid polymer, this epoxy resin curing agent also has certain toxins, so special care should be taken when using it. Today I will introduce to you the types of epoxy hail trace resin curing agents. I hope you can have some understanding of the types of epoxy resin curing agents through the introduction.

Latent epoxy curing agent.

1. Latent epoxy resin curing agent.

The scope of use of epoxy resin curing agent is different, which leads to the fact that according to the requirements of various fields, the corresponding epoxy resin curing agent used is also different, and if the epoxy resin curing agent is used incorrectly, then the epoxy resin will not cure. First of all, I would like to introduce the latent epoxy resin curing agent. The performance of this latent epoxy resin curing agent is relatively stable under general conditions.

Only when its temperature rises at a certain height, it will show its activity, so as to cure with epoxy resin, this latent epoxy resin curing agent has dicyandiamide, it shows the characteristics of this latent curing agent, it is relatively stable at room temperature, will not produce curing, when the temperature is 145-165 °, it will produce curing within 30 minutes.

2. Visible epoxy resin curing agent.

Visible epoxy curing agent.

Visible epoxy resin curing agent is a kind of curing agent that commonly uses epoxy resin, when using this visible epoxy resin curing agent, we must pay attention to the use of energy to be appropriate, when using this epoxy resin curing dose is relatively small, the fixed line product will be connected to the epoxy group without reaction, if the use of too much energy, it will lead to a particularly fast curing speed, will not achieve the expected effect. The epoxy resin curing agent belonging to this obvious type has adipic acid diacyl hydrazide, which will not be soluble in epoxy resin at room temperature, and will be cured under the dissolution of high temperature environment.

3. Catalytic epoxy resin curing agent.

The catalytic epoxy curing agent can be activated by the epoxy resin we use, and when we turn on the epoxy machine, we can apply the catalytic epoxy resin and combine it into a network structure. Let's talk about the curing agent that will be added to the epoxy resin, also known as the melon-shaped curing agent, which can have an addition reaction with the epoxy group.

Catalytic epoxy curing agent.

Remind everyone to ensure the cleaning and hygiene of the site when using, and at the same time wash your hands and face in time, or if it is exposed to the outside **, if it accidentally gets into your eyes, you must immediately go to the hospital for treatment.