introduction
In the coating industry, curing agent is an indispensable element, which enables the coating to cure into film by triggering the cross-linking reaction in the linear resin. This process not only gives the paint excellent properties, such as improving the film’s high temperature resistance, water resistance, solvent resistance, wear resistance and scratch resistance, but also plays a key role in different application scenarios.

Classification and characteristics of curing agent
In the field of coatings, epoxy resins are a common type of resin, and curing agents are mainly divided into four categories: single polyamines, mixed polyamines, modified polyamines and eutectic mixed polyamines.

1. Single polyamine

Fatty amines, alicyclic amines, aromatic amines and polyamides * : Among them, fatty amines and polyamides can undergo curing reactions at room temperature, while aromatic amines curing agents need to be heated. Curing products of aromatic amine curing agents usually have higher temperature resistance, mechanical strength and corrosion resistance. However, fatty amine curing agents may be more toxic and irritating, while aromatic amine curing agents require higher curing temperatures.

Characteristics and development trend of various curing agents

2. Modified polyamines

Through chemical modification, the latent curing agent * is obtained: that is, the curing agent with a long application period at room temperature. For example, the modification of curing agents such as diethylenetriamine and triethylenetetramine can reduce their curing activity and improve their storage stability.

3. Eutectic mixed polyamines

Stored for a long time at room temperature, triggering the curing process when heated * : For scenarios requiring special applications, eutectic hardeners have unique advantages.

4. Latent curing agent

Able to maintain a long application period at room temperature, but quickly trigger a curing reaction when heated * : has great potential in some applications to provide rapid curing while extending the storage life of the product.

The importance of curing agents
Curing agents play a key role in the coating industry. By selecting the right curing agent, manufacturers are able to adjust the performance of the paint film to meet specific needs and adapt to different application scenarios. In the pursuit of scientific and technological progress and environmental performance, the coating industry will continue to devote itself to the development of new curing agents to provide the market with higher performance coating products.

Characteristics and development trend of various curing agents

The development trend of curing agent
1. Improvement of environmental performance

With the enhancement of environmental awareness, the coating industry will pay more attention to the environmental performance of curing agent. Research and development of low toxicity, low irritation curing agent will become the future development trend.

2. Longer application period

Research on latent curing agents will continue to be in-depth to meet the demand for longer product storage.

3. Multi-functional curing agent

The curing agent is expected to have more functions, not only to achieve curing, but also to have multiple properties such as antibacterial, wear-resistant, and weather-resistant to meet the ever-upgrading market demand.

4. Customized design

To meet the needs of different coating applications, the design of curing agents will be more customized to provide more accurate performance matching.

Characteristics and development trend of various curing agents

peroration
Curing agent is a magic element in the coating industry, providing a wealth of properties and application possibilities for coatings. With the development of science and technology, we can expect to see the emergence of more advanced and environmentally friendly curing agents to promote the continuous development of the coating industry. In the future, coating products will better meet the needs of all walks of life for high performance and environmental protection, and become the choice of decoration and protection.