Beifang Huajin successfully completed the pilot-scale experiment on \"high-pressure reactive injection molding of polydicyclopentadiene\"

Polydicyclopentadiene (PDCPD) is a thermosetting polymer material with good application prospects. The standardization of **environmental protection policies, the growing environmental awareness among citizens, and increased market recognition have created opportunities for the rapid development of PDCPD products. At the same time, over the past twenty-odd years, there has been a strong trend toward replacing materials such as fiberglass, polyurethane, and aluminum alloys with PDCPD products, which is bound to lead to explosive growth. Considering environmental factors, developed countries have imposed strict controls on the use of fiberglass products, and China is bound to further enforce such restrictions. Once the raw materials become domestically produced, it will be possible to compete with foreign brands, further reduce the cost of these raw materials, ensure a stable supply, and provide high-quality technical support, thereby increasing the profit margins for domestic manufacturers.

As a lightly cross-linked thermosetting resin, PDCPD possesses mechanical properties similar to those of thermoplastic engineering plastics. At the same time, its low viscosity (300 cp) and low extrusion pressure (15–30 psi) enable it to fill the cavities of complex part molds easily; moreover, holes in the parts can be formed directly without any seams. 1. Excellent mechanical properties: It features a good balance of mechanical properties, boasting high impact strength and high flexural modulus, which are superior to those of nylon and polyurethane. At the same time, it enables free design of the product shape and flexible adjustment of the molding cycle, making it particularly suitable for surface decorations and structural components. 2. Resistance to drugs, acids and alkalis, as well as water resistance: It possesses excellent corrosion resistance, especially to acids and alkalis, making it suitable for manufacturing components that require corrosion resistance ； It has no affinity for water and exhibits excellent water resistance. 3. Weather resistance: It has good performance at low temperatures, and its physical properties are not easily affected by temperature; it does not become brittle even in low-temperature environments (-30°C), making it suitable for manufacturing components used in such conditions. 4. Surface finish, electrical insulation, and performance: It offers excellent surface finish; an oxide film forms on its surface after molding, ensuring good adhesion to coatings, and it can also be electroplated ； Good electrical insulation properties ； It has a low density; at a temperature of 23°C, the density of PDCPD-based components is 1.04 g/cm³. These components are lightweight, and the addition of flame-retardant ingredients enables them to possess flame-retardant properties. PDCPD is a pure hydrocarbon; it does not produce any harmful substances including dioxins when burned. Its products do not contain the six specific hazardous substances specified by the RoHS standard, nor any chemicals that can cause endocrine disruption. Additionally, it is recyclable, making it an excellent environmentally friendly material.

1. Polydicyclopentadiene PDCPD is a homopolymer or copolymer of dicyclopentadiene (DCPD). 2. Density: 1.03 g/cm3. 3. The heat deformation temperature is around 120°C, with no change in inertness at -40°C. 4. Resistant to common acids, bases, and organic solvents, but not resistant to aromatic hydrocarbons and halogenated hydrocarbons. 5. The bending modulus is around 2000 MPa. 6. The tensile strength is around 30 MPa. 7. The glass transition temperature is around 190°C. 8. It is obtained by ring-opening disproportionation polymerization of dicyclopentadiene in the presence of a catalyst composed of tungsten hexachloride and dichloroethylaluminum. 9. Various components can be manufactured using reactive injection molding. 10. It can be used as automotive parts such as bumpers, shock absorbers, dashboards, fenders, etc., as well as for sports equipment housings and chemical-resistant containers. There has also been some development in drones in recent years.

Great technology, innovative breakthroughs – impressive!