Guangyuan Ruifeng New Materials - What is a crosslinking agent? What are the functions of crosslinking agents?

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Release Time: 2025-07-24

Summary: What is a crosslinking agent? Many people may not know that crosslinking agents, also known as curing agents

What is a crosslinking agent? Many people may not know that crosslinking agents, also known as curing agents, hardening agents, and curing agents, can transform linear or mildly branched macromolecules into a three-dimensional network structure, thereby improving strength, heat resistance, wear resistance, solvent resistance, and other properties. They can be used in foamed or non foamed products. So, what is the function of crosslinking agents? Now, let's take a look at what crosslinking agents are and their functions.

1、 What is a crosslinking agent?

Crosslinking agent is a substance that can act as a bridge between linear molecules, allowing multiple linear molecules to bond and crosslink into a network structure. A substance that promotes or regulates the formation of covalent or ionic bonds between polymer molecular chains. Crosslinking agents have different names in different industries, for example, they are commonly referred to as "vulcanizing agents" in the rubber industry; In the plastic industry, it is called "curing agent", "curing agent", and "hardener"; In the adhesive or coating industry, it is called "curing agent", "hardener", etc. Although the above terms may vary, they reflect the same chemical properties and mechanisms.

2、 What are the functions of crosslinking agents?

1. Crosslinking and modification of various thermoplastic materials such as polyethylene, polyvinyl chloride, chlorinated polyethylene, EVA, polystyrene, etc. Cross linking can significantly improve the heat resistance, flame retardancy, solvent resistance, mechanical strength, and electrical properties of the product.

2. The vulcanization assistance of special rubbers such as ethylene propylene rubber, various fluororubbers, CPE, etc. (used in combination with DCP, generally at a dosage of 0.5-4%) can significantly shorten the vulcanization time, improve strength, wear resistance, solvent resistance, and corrosion resistance.

3. Crosslinking of acrylic and styrene type ion exchange resins. It has lower dosage, higher quality, and can be used to prepare ion exchange resin with excellent properties such as anti fouling, high strength, large pore size, heat resistance, acid and alkali resistance, and oxidation resistance compared to divinylbenzene crosslinking agent.

4. Modification of polyacrylic esters, polyacrylic esters, etc. It can significantly improve heat resistance, optical performance, and processing performance.

5. Modification of epoxy resin and DAP (diallyl phthalate) resin. Can improve heat resistance, adhesion, mechanical strength, and dimensional stability.

6. Crosslinking and modification of unsaturated polyester and thermoplastic polyester. It can significantly improve heat resistance, chemical corrosion resistance, dimensional stability, weather resistance, and mechanical properties.

7. TAIC's homopolymer, polytrimethylallyl isothiocyanate, is a transparent, hard, heat-resistant, and electrically insulating resin that can also be used to bond glass and ceramics.

8. The internal plasticization of polystyrene and copolymerization modification of styrene with TAIC can produce transparent and crush resistant products.

9. A protective agent for metal heat resistance, radiation resistance, and weather resistance, TAIC prepolymer is baked and plated on metal surfaces, and its baked coating has excellent heat resistance, radiation resistance, weather resistance, and electrical insulation properties.

10. Used as an intermediate for UV curable coatings, photoresists, flame retardants, and flame retardant crosslinking agents.

The above is the complete content about what crosslinking agents are and their functions. We hope the above content can be helpful to you. If you need to learn more related knowledge, please follow our website - Guangyuan Ruifeng New Materials Co., Ltd., a professional company that produces crosslinking agents.

Keywords: Guangyuan Ruifeng New Materials - What is a crosslinking agent? What are the functions of crosslinking agents?

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