[Chemical Knowledge]：The nature, use, upstream and downstream raw materials, storage methods, dicyclopentadiene is mainly used in the production of pharmaceutical pesticide resin products.

Properties of fine dicyclopentadiene

Dicyclopentadiene (dicyclopentadiene, DCPD) is an organic compound with the molecular formula C10H12. It is a white to pale yellow solid with a rosin odor at room temperature. DCPD has high thermal stability and good chemical stability. The melting point is between 32°C and 35°C, and the boiling point is about 170°C. Its density is 0.98g/cm³, its solubility is low, and it is mainly soluble in organic solvents such as benzene and toluene.

Fine dicyclopentadiene use

Fine dicyclopentadiene is widely used in chemical industry. It is an important raw material for the production of epoxy resins, which are widely used in coatings, adhesives and composites. DCPD is also the main component of unsaturated polyester resins, which are mainly used in the manufacture of FRP products. Dicyclopentadiene is also used as a comonomer in the production of high impact polystyrene (HIPS), which is widely used in electrical housings, toys and automotive parts.

Fine dicyclopentadiene upstream and downstream raw materials

In the production process of fine dicyclopentadiene, the upstream raw materials mainly include pyrolysis gasoline and cyclopentadiene. Pyrolysis gasoline is obtained by thermal cracking, which contains a small amount of cyclopentadiene, and then refined dicyclopentadiene is prepared by distillation and polymerization processes. DCPD's downstream products are diverse, including epoxy resins, unsaturated polyester resins and high impact polystyrene, which are widely used in many industries, such as construction, automotive and electronics.

Fine dicyclopentadiene production process

The production of refined dicyclopentadiene mainly uses a two-step method: first, cyclopentadiene is extracted from pyrolysis gasoline, and then cyclopentadiene is dimerized to generate dicyclopentadiene. Specifically, high-purity cyclopentadiene is separated by distillation, and fine dicyclopentadiene is prepared by thermal polymerization or catalytic polymerization. In order to improve the purity of the product, it is usually necessary to carry out multiple distillation and recrystallization treatment.

Fine dicyclopentadiene storage method

Because the chemical properties of fine dicyclopentadiene is relatively stable, but it is easy to polymerize at high temperature, resulting in solid precipitation, which affects the quality of the product. Therefore, the storage of DCPD needs to be carried out under low temperature, dark and closed conditions, and is usually stored in a stainless steel or aluminum container. In order to prevent accidental polymerization, small amounts of stabilizers such as dimethyl disulfide (DMD) or hydroquinone (HQ) are often added during storage. During transportation, it is also necessary to maintain a low temperature and take anti-leakage measures.

Refined Dicyclopentadiene Market Demand

The market demand for fine dicyclopentadiene is mainly driven by downstream applications. In recent years, with the growth of demand for epoxy resin and unsaturated polyester resin, especially in the fields of wind power, electronics and construction, the market demand for DCPD is also steadily increasing. With the increasingly stringent environmental regulations, the demand for high performance and low volatile organic compounds has increased, which has also promoted the expansion of the refined dicyclopentadiene market.

Environmental Protection and Safety

In the production and use of fine dicyclopentadiene, environmental protection and safety issues cannot be ignored. Some harmful gases and waste liquid may be produced in the production process, and effective treatment measures need to be taken to prevent environmental pollution. DCPD is prone to self-polymerization at high temperatures, and there is a potential explosion hazard. Therefore, the temperature and pressure should be strictly controlled during production and storage, and the necessary protective facilities should be equipped.

Technological progress and innovation

With the development of science and technology, the production technology of fine dicyclopentadiene is also constantly innovating. At present, the improvement of catalysts and the application of new reaction processes have greatly improved the production efficiency and product purity of DCPD. The introduction of green chemistry technology is expected to reduce the environmental impact of the production process. In the future, with the development of new materials and new technologies, the application of fine dicyclopentadiene in more fields will also be expanded.

Conclusion

As an important chemical raw material, fine dicyclopentadiene is widely used in many industrial fields because of its excellent physical and chemical properties. By continuously improving the production process and strengthening environmental protection measures, the fine dicyclopentadiene industry is expected to achieve greater development in the future. Whether in the improvement of material performance, or in terms of environmental protection and safety, fine dicyclopentadiene shows its great potential and market prospects.