As a vulcanizing agent, 2,4-Dichlorobenzoyl Peroxide exhibits a significant duality in silicone rubber processing: on the one hand, its rapid vulcanization characteristics can greatly improve production efficiency and shorten hot air vulcanization time; on the other hand, the frosting problem of decomposition products directly affects the appearance and long-term stability of the product.At present, with the strengthening of environmental protection regulations, the development of new vulcanizing agents with low chlorine content and high decomposition efficiency has become an industry trend, but 2,4-Dichlorobenzoyl Peroxide still occupies an important position in the field of silicone rubber processing due to its mature application system and cost advantages.

In the industrial production of silicone rubber products, the application of 2,4-Dichlorobenzoyl Peroxide runs through multiple key links. Extrusion molding is its main application scenario, especially in the continuous production of silicone tubes, cable insulation layers, sealing strips, etc. 2,4-Dichlorobenzoyl Peroxide can quickly induce a cross-linking reaction in a hot air vulcanization box, achieving a production speed of several meters per minute. This open vulcanization method avoids the dependence of the molding process on the mold and significantly reduces the processing cost of thin-walled products. For medical-grade silicone products such as artificial organs and baby bottles, its high-temperature curing characteristics can ensure that the products meet medical-grade heat resistance standards, and the low migration of its decomposition products meets the requirements of biocompatibility.

In the field of electronics and electrical, silicone rubber vulcanized with 2,4-Dichlorobenzoyl Peroxide is widely used in products such as high-voltage cable accessories and insulating sleeves. Compared with other peroxide vulcanizers, another outstanding advantage of 2,4-Dichlorobenzoyl Peroxide is the transparency retention of the vulcanized products, which makes it unique in the fields with strict requirements on light transmittance, such as LED encapsulation glue and optical device sealing materials.

Rapid curing of unsaturated polyester resin is an extended application field of 2,4-Dichlorobenzoyl Peroxide. When used as a curing agent, it can induce resin crosslinking at room temperature, which is particularly suitable for on-site molding of large FRP products. This application makes full use of the low decomposition temperature of 2,4-Dichlorobenzoyl Peroxide. By adding an accelerator system, the gel time can be accurately controlled to meet the needs of different process conditions. However, in such applications, special attention should be paid to the effect of residual acidic substances on the performance of the resin, and a subsequent neutralization treatment process is usually required.

The product advantages of 2,4-Dichlorobenzoyl Peroxide are first reflected in the vulcanization kinetics. The 2,4-dichlorobenzoyloxy free radicals produced by its decomposition have high reactivity and can complete the cross-linking of silicone rubber molecular chains in a short time. The typical vulcanization speed is 30%-40% faster than that of traditional DCP. This fast vulcanization characteristic not only improves production efficiency, but also reduces energy consumption in high temperature environments, which is in line with the development direction of green manufacturing. In the open hot air vulcanization system, 2,4-Dichlorobenzoyl Peroxide is particularly tolerant to oxygen interference, avoiding defects such as stickiness on the vulcanized surface, which is a process advantage that other peroxides cannot match.

The breadth of process adaptability constitutes the third major advantage of the product. 2,4-Dichlorobenzoyl Peroxide can be used for compression molding, and is more adept at continuous vulcanization under pressureless conditions. This processing flexibility allows its application range to cover multiple fields from medical catheters to building sealants. In the mixing process, the paste formulation is easy to disperse on the open mill, and has excellent compatibility with silicone rubber raw rubber, without the dust or agglomeration phenomenon common in powder vulcanizers. For products that need to be colored, the 2,4-Dichlorobenzoyl Peroxide system has less interference with the pigment and can maintain the original color of the product, which is crucial for applications with high transparency requirements.

The cost-effectiveness advantage is particularly significant in large-scale production. Although the unit price of 2,4-Dichlorobenzoyl Peroxide is higher than some traditional vulcanizers, its addition amount is usually only 0.8%-1.2% (based on pure product), and it does not require a complex auxiliary system. Taking into account factors such as processing energy consumption, equipment depreciation and scrap rate, the overall production cost is competitive. In addition, its storage stability is better than that of most liquid peroxides, and its shelf life can reach 18 months in a cool environment of 15-28℃, which greatly reduces the difficulty and cost of warehouse management.

Breakthroughs in environmental friendliness have strengthened the market position of the product. By improving the synthesis process, modern 2,4-Dichlorobenzoyl Peroxide products have controlled the generation of polychlorinated biphenyls (PCBs) to below 0.1ppm, which fully complies with the requirements of the EU RoHS Directive. Some high-end models also introduce biodegradable silicone oil as a carrier, which significantly reduces the environmental impact of waste packaging materials. After the end of the product life cycle, the silicone rubber vulcanized with 2,4-Dichlorobenzoyl Peroxide can still be recycled through thermal cracking. This environmental protection feature of the entire life cycle is in line with the development concept of the circular economy.