What raw materials are used in paint curing agent and what is paint curing agent

Femtosecond testing found that curing agents, also known as hardeners, are a class of substances or mixtures that enhance or control curing reactions. Simply put, it is used to cure the main agent and auxiliary materials, "accelerate the rapid drying of paint, increase adhesion and increase the hardness of paint surface, improve the chemical stability and anti-corrosion ability of paint." For example, the curing agent of epoxy coatings is amines or anhydrides, and the curing agent of polyurethane coatings is isocyanate.

They are divided into: addition curing agent This kind of curing agent and epoxy group have an addition reaction to form a part of the chain segment of the curing product, and through the gradual polymerization reaction, the linear molecules are cross-linked into bulk structure molecules, this kind of curing agent is also known as melon-type curing agent. Such as primary amines, polythiols, polyphenols, low molecular weight polyamides, organic acids and anhydrides and low condensate curing agents.

Catalytic curing agent This kind of curing agent only initiates the epoxy resin, after opening the epoxy group, the catalytic epoxy resin itself polymerizes into a network structure, forming a homopolymer with ether bonds as the main structure, and the curing agent itself does not produce cross-linking reaction. Such as tertiary amines, imidazoles, dicyanobiamines, boron trifluoride complexes, stannous chloride, stannous isooctanoate and stannous octanoate, etc.

Generally, nitro paint, alkyd paint, phenolic paint, blending paint, etc. are directly mixed with the curing agent and the main paint, which can be directly constructed without adding a curing agent, but if it is polyester paint and polyurethane paint, their production process is to separate the main paint and the curing agent, as well as the thinner, and then mix it according to the ratio during paint construction.

Curing agent, also known as hardener, curing agent or metastasis, is a class of substances or mixtures that enhance or control the curing reaction. The resin cures after condensation

Chemical reactions such as closed-loop, addition or catalysis cause irreversible changes in the thermosetting resin, and curing is accomplished by adding a curing (crosslinking) agent.

Curing agents are classified according to chemical composition1Aliphatic amines.

For example. Vinyltriamine.

DETA aminoethylpiperazine AE

2.Aromatic amines.

For example. M-phenylenediamine M-PDA

MPD Diaminodiphenylmethane DDM

ht-972

deh-50

3.Amide amines 4Latent curing amines 5Urea substitutes.

Paint is divided into two types: one-component and two-component, in which two-component paint is divided into main paint and curing agent, and the main paint and curing agent need to be mixed before use, while one-component paint can be used directly. For example, epoxy anticorrosive paint is a two-component paint, acrylic polyurethane paint, polyurethane paint, fluorocarbon paint, chlorosulfonated polyethylene paint are also two-component, chlorinated rubber paint and silicone high-temperature resistant paint, high chlorinated polyethylene paint, alkyd paint are one-component paints. Tianjin Jinhai special coating decoration ****.

Paint hardeners are adhesives that are often used in decorative paints.

There are two kinds of hardeners for paints:

1) One is physical drying, where the internal molecules of the paint directly react with the oxygen in the air, so as to achieve the purpose of drying.

2) One is chemical curing, which is to make its molecules react through the combination of A and B components, so as to achieve the purpose of curing.

The ratio of paint and curing agent is not certain, the proportion of different paints is different, 70% zinc content epoxy zinc-rich primer, fluorocarbon paint is 10:1, inorganic zinc-rich primer is 2:1, the proportion of curing agent should be provided by the manufacturer, do not use it at will.

The curing agent will react with the moisture in the air, so each use must be sealed and stored in time, the paint, curing agent and thinner must be fully mixed before use, and the preparation must be allowed to stand for 10-20 minutes and wait for the foam to disappear before construction, so as to avoid blistering and other drawbacks.

Instructions for the use of polyurethane paint curing agent.

1. Polyurethane paint and polyester paint are particularly sensitive to moisture and moisture, so attention should be paid to ensure the dryness of the container during construction, otherwise it will cause gel and cannot be used, or there will be problems such as peeling and blistering between layers.

2. Houses decorated with polyurethane paint and polyester paint are best ventilated and dried for 15 to 30 days before living in. The floor oil should not be thickly brushed at one time, but should be brushed multiple times. If there are bubbles on the floor, some thinner or cyclohexanone, CAC, anti-white water and the like are sufficient.

3. In order to achieve the best decorative effect, it is recommended to use the primer and topcoat of the boutique series.

1. Accelerate the curing time of the primer.

2. If the curing time of the primer is slow, it will also delay the time of the painting.

3. If the time is not urgent, there are some primers that do not reinforce the chemical agent, and you need to wait for the primer to dry thoroughly before you can paint it. So it's also a waste of time.

4. There is also a curing agent that can also accelerate the coating of primer and panel.

Therefore, many wood paint three-in-one have necessary curing agents.

Summary. Hello, you can add, but in moderation, otherwise there will be cracks after adding more dry, it's okay to add less, the curing agent is to speed up the drying of the paint, not too hard. Curing agent, also known as hardener, curing agent or metastasis, is a class of substances or mixtures that enhance or control the curing reaction.

Can you reinforce the chemical on the paint?

Hello, you can add, but in moderation, otherwise there will be cracks after adding more dry, it's okay to add less, the curing agent is to speed up the drying of the paint, not too hard. Curing agent, also known as hardener, curing agent or metastasis, is a class of substances or mixtures that enhance or control the curing reaction.

The variety of curing agent has a great impact on the mechanical properties, heat resistance, water resistance, corrosion resistance and so on of the cured object. The curing temperature of various curing agents varies, and the heat resistance of the cured object also varies greatly. Generally speaking, it is possible to obtain a cured product with excellent heat resistance by using a curing agent with a high curing temperature.

The curing reaction is a chemical reaction, which is greatly affected by the curing temperature, the temperature increases, the reaction speed accelerates, the gel time becomes shorter, and the logarithm of the gel time generally decreases with the increase of the curing temperature.

Summary. Dear, yes, water paint curing agent can be used on paint. After complete drying, the adhesion of water-based paints will not be worse than that of oil-based paints.

Dear, yes, water paint curing agent can be used on paint. After complete drying, the adhesion of water-based paints will not be worse than that of oil-based paints.

But there are a few things to note:1Water-based paint dries more slowly than oil-based paint, so it is possible to wait until it is completely dry (dry) before applying.

It should be noted that if you use PU paint, you must wait for the water-based paint to dry completely before applying, otherwise there will be a series of coating problems in the topcoat. 2. If you are talking about water-based primer + oil-based topcoat, then it is great, in fact, there are many manufacturers who use the water-based bottom and PU NC surface coating reincarnation process. But if you are talking about water-based surface + oily surface, the problem of poor adhesion cannot be ruled out.

This will not happen with water-based bottom + oil-based bottom, and the main performance of the primer is to increase adhesion). PS: If it is a large-scale wood production, in fact, the water-based + UV process will be more suitable, because it is fast.

In the field of industrial wood paint, with the cooperation of an intelligent coating equipment company and a furniture paint company, the (single-layer) paint film coating of a door can be completed in about 35 seconds.

Two-component paints require the use of a hardener.

Paints that need to be hardened mainly include:

Epoxy zinc-rich primer, epoxy primer, epoxy topcoat, epoxy coal asphalt paint, epoxy phenolic paint, epoxy zinc phosphate primer, acrylic polyurethane topcoat, polyurethane topcoat, fluorocarbon paint, polysiloxane paint, inorganic zinc-rich primer, epoxy floor paint, etc.

The curing agent must be specially painted, and it must be added in strict accordance with the ratio of paint and curing agent, and can not be added more or less. After the curing agent is mixed with the paint, it is recommended to use it up in about 4 hours to avoid the gelatinization of the paint and cannot be used.

This depends on the production process of the paint and which paints, generally nitro paint, alkyd paint, phenolic paint, blending paint, etc. are directly mixed with the curing agent and the main paint, which belongs to the direct construction without adding the curing agent, but if it is polyester paint and polyurethane paint, their production process is to separate the main paint and the curing agent, as well as the thinner. If no curing agent is added, then this kind of paint will not cure after application.

Hello! Clear paint, also known as varnish, is transparent and has no pigment components.

Clear paint requires reinforcing agent belongs to polyester varnish. This kind of paint has high strength and good wear resistance, and is a widely used paint for modern high-grade wood furniture painting. The disadvantage is that this paint contains more toxicity.

The clear paint that does not require a reinforcing agent is an ordinary varnish and is suitable for the paint coating of ordinary furniture. The fastness of its lacquer is not as good as that of polyester varnish. However, this ordinary varnish has a very low toxic content.

No, the role of the curing agent is mainly to ensure the speed of paint drying and enhance the hardness of the paint, but the paint will dry relatively slowly, the drying time is relatively long, and the paint surface will be very weak.

Construction process: treatment of the base layer - sealing primer - frost paper - oil powder - base coloring, repair - full batch of putty - grinding - brush oil color - brush the first varnish - repair the color - frost paper - brush the second varnish - brush the top coat.

Objects of different materials can be coated with paint, which can get a colorful and colorful appearance, play a role in beautifying the living environment of human beings, and make contributions to the material life and spiritual life of human beings that cannot be ignored.

No, if there is no curing agent, you can add xylene, the curing agent itself is a quick air drying effect, if you don't reinforce the chemical agent, the paint you brush will not dry.

What if there is no reinforcing agent.