The kind of diluent should be added to the epoxy curing agent

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. Method 1:

The sample is dissolved in sulfuric acid, and then concentrated nitric acid is added, and a large amount of sodium hydroxide solution is poured into it. 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 the adhesive film or glue solution, p-phenylenediamine and 8ml of sample water, boil for 8min, if it is epoxy resin, the solution is peach....

The diluent is first mixed with the resin, and then their mixture and hardener are added together and stirred well.

It is recommended to use water-based epoxy, water-based epoxy curing agent and resin are stirred evenly and diluted with water, the odor is small, the environmental protection cost is relatively low, and the most important thing is that the quality is good.

You can try adding an active.

Thinner. It's called PL1000S, of course, this thing has a little bit of color, which will affect a little transparency, and this product is with.

Curing agent. It does not react, it only participates in the reaction when the curing agent reacts with the epoxy.

Summary. Epoxy resin is diluted with reactive diluent and inactive diluent, the reactive diluent is mainly glycidyl ether substances, and the inactive diluent is some inert solvent, such as toluene, ethanol, acetone, butanol, dibutyl ester, etc.

What diluent is used for epoxy resins?

Epoxy resin is diluted with reactive diluent and inactive diluent, the reactive diluent is mainly glycidyl ether substances, and the inactive diluent is some inert solvent, such as toluene, ethanol, acetone, butanol, dibutyl ester, etc.

How to match. You have to follow the instruction manual. For example, the common epoxy resin to the curing agent ethylenediamine has a weight ratio of 100:

6～8。With the curing agent m-phenylenediamine, the weight ratio is 100:14 15, and so on.

Good. Thank you! You're welcome ha.

There are dozens of diluents used in epoxy resins.

There are many manufacturers of diluents in the Huangshan area, and you can consult the manufacturers for details.

Summary. There are several methods that can be used.

One. Reactive diluent (i.e., reactive diluent): It is a molecular chain containing epoxy groups, which can be cross-reacted with various curing agents to form a network structure.

What is the dilution of epoxy curing agent.

There are several ways to use one of the best methods. Reaction number bright diluent (i.e., reactive diluent): It is a molecular chain containing epoxy groups, which can be cross-reacted with various curing agents to form a network structure.

Two. Non-reactive diluent (i.e., inactive diluent): It is an additive diluent that does not contain epoxy groups in the molecular hidden ballast chain and cannot react with the cooperating curing agent.

The reactive type mainly contains alkyl glycidyl ether) a cyclic structure containing an epoxy group at one end, which participates in the reaction, the odor is very light, and the base is widely used. Butylglycidyl ether) - only one end contains an epoxy group, so that the state participates in the reaction The dilution effect of the old slippery is the best, and the odor is heavier.

The types of non-reactive letter-containing diluents are as follows:1Acetone 2Anhydrous ethanol digging 3Toluene 4Xylene 5Styrene 6Ethyl acetate 7Butyl acetate 8Dimethylformamide.

Summary. Hello dear! There are many kinds of diluents that can be used in epoxy resin, among which acetone, ethyl acetate, toluene, xylene, etc. are not involved in the curing reaction, and the main ones involved in the curing reaction are glycidyl ethers such as butyl glycidyl ether (660 diluent), benzyl glycidyl ether (692 diluent), phenyl glycidyl ether (690 thinner) and so on.

Hello dear! There are many kinds of diluents that can be used in epoxy resin, among which acetone, ethyl acetate, toluene, xylene, etc., which are not involved in the curing reaction, and the main ones involved in the curing reaction are glycidyl ethers such as butyl glycidyl ether (660 diluent), benzyl glycidyl ether (692 diluent), phenyl glycidyl ether (690 thinner) and so on.

The main function of the epoxy resin is to reduce the viscosity of the epoxy resin formulation system and improve the process performance. However, the addition of diluent has a significant impact on the HDT mechanical properties of epoxy resin cured products.

It can be divided into two categories: inactive diluents and reactive diluents.

The inactive diluent does not react with epoxy resin, curing agent, etc., and is purely physically blended into the resin. It's with.

Resins are merely mechanical mixtures that dilute and reduce viscosity. It is mostly volatilized during the curing process of the glue.

When the use requirements are high, the inactive diluent cannot be used, and the reactive diluent should be used.

1. Most of the inactive diluents are high boiling point liquids, such as dibutyl phthalate, dioctyl phthalate, styrene, diallyl phthalate, toluene, xylene, etc. The dosage should be 5 20. About 12 dibutyl phthalate reduces the viscosity of standard epoxy resins from 10 pa s to 0 5 0 7 pa s (25) reactive diluent.

2. Reactive diluent generally refers to low-molecular compounds with one or more epoxy groups, which can directly participate in the curing reaction of epoxy resin and become part of the cross-linking network structure of epoxy resin cured products, which has almost no effect on the performance of curing products, and sometimes increases the toughness of the curing system. Reactive diluents are further divided into two types: single epoxy reactive diluents and polyepoxy reactive diluents. Certain single epoxy diluents, such as propyl glycidyl ethers, butyl glycidyl ethers, and phenyl glycidyl ethers, react with amine curing agents.

In solvent-free epoxy coatings, the dosage of monofunctional reactive diluent does not exceed 15 of epoxy resin, and the dosage of polygonal reactive diluent can reach 20 25 Reactive diluent is generally toxic, and it must be noted during use that long-term contact often causes allergies, serious and even ulceration. The dilution effect of single epoxide is better, and the aliphatic type has a better dilution effect than the aromatic type. The acid and alkali resistance of cured products using aromatic reactive diluents did not change much, but the solvent resistance decreased.

Diluents can be divided into active and inactive diluents, the usual solvents are called inactive diluents, they do not react with epoxy resin, curing agents are purely physical infiltration, volatilize with the curing reaction, so they will leave pores to the cured substance, so that the shrinkage rate increases, and in serious cases, it will affect the performance of the cured substance, so it can not be used for thicker coatings. Although there are also liquids with high boiling points, such as plasticizers such as dibutyl phthalate, trimethyl phosphate and other substances, there is a tendency to migrate and exud, especially after immersion in liquids and solvents, the extraction phenomenon is very obvious, and the large surface tension will seriously affect the leveling and surface comparison of the material.

Epoxy reactive diluents are divided into single epoxide and polyepoxide, and are further divided into aliphatic and aromatic according to their type. Theoretically, single epoxides will reduce the thermal deformation temperature, while polyepoxides will have less of an impact. The aliphatic type is better diluted than the aromatic type, while the aromatic type has better acid and alkali resistance.

Usually we only need one epoxy diluent in the application of coatings, so how to effectively choose a suitable modifier according to the needs is very necessary, which needs to be selected according to its curing properties such as viscosity, mechanical, acid and alkali resistance, thermal deformation temperature, etc. The dilution ability of single epoxy reactive modifier is greater than that of polyepoxy reactive modifier, and the multi-epoxy reactive diluent has better performance for maintaining epoxy products.

Use diluents that are not involved in the reaction: e.g., dibutyl ester, absolute ethanol.

Acetone or alcohol, try to be as water-free as possible.

The reinforcing agent can cure the agent, that is, it can be done, and the resin is a liquid without a curing agent, and it will not dry when applied to the ground. According to the manufacturer's production formula, the dosage of curing agent is also different.

Suzhou Meiguowang Floor Material**** Water-based epoxy curing agent, water-based epoxy floor paint 1 The water-based epoxy floor made by water-based epoxy curing agent is lower than the ordinary cost, and the quality is still the same.

2. Water-based is also green and environmentally friendly, and it is very healthy for both people and the environment.

3 Water-based is also suitable for wet ground. It is also a trend of development.

Toluene or ethyl acetate is generally used.