The phenolic molding compound uses phenolic resin as the binder, wood powder as the main filler, supplemented with additives, and is a powdered phenolic molding compound prepared by hot refining process. Phenolic molding compound is suitable for compression molding and injection molding. It is used for low-voltage electrical appliances, general household appliances, flame-retardant, heat-resistant and water-resistant high-strength electrical accessories, water-lubricated bearings and seals, high-performance automotive parts, and insulation structures for transportation appliances. Parts and telecommunication and radio insulation parts with high frequency insulation. Here we introduce the components and functions of phenolic molding compounds:

1. Phenolic resin: Phenolic resin is used as a binder in phenolic molding compounds. The basic requirements for the resin are: 1. To meet the specific performance requirements of molded products; 2. To have good flow characteristics, that is, normal temperature and pressure It is in a solid or semi-solid state that does not stick to your hands. It has good fluidity under the pressing conditions, so that the molding material can evenly fill the mold cavity; 3. Appropriate curing speed, and there are few by-products in the curing process, and the processability is good (such as good miscibility with various solvents).

2. Reinforced materials: Reinforced materials play a skeleton role. Fibre reinforced materials are mainly used. In addition, chopped fiber mats, fiber fabrics or ropes are also used as reinforcement materials. Fiber-type reinforced materials include open-cut silk, untwisted roving, twisted yarn, high silica fiber, carbon fiber, asbestos fiber, nylon fiber, aramid fiber.

3. Auxiliary agent: The auxiliary agent includes glass fiber surface treatment agent, filler, diluent, mold release agent and pigment. The glass fiber surface treatment agent is used to improve the adhesion between the resin and the reinforcing material and the interface state between the resin and the fiber. For phenolic molding compounds, the commonly used glass fiber surface treatment agent is KH-550. The filler is mainly powdery filler, which is used to improve the fluidity of the molding compound, reduce the shrinkage of the molded product, improve the surface gloss of the product, uniform the quality of the product, and give the product a certain special performance. The thinner is used to reduce the viscosity of the resin and improve the impregnation performance of the resin.