Environmentally friendly flame retardant masterbatch process and its application

With the widespread application of polymers in fields such as construction, electronics, transportation, and communication, polymer flame retardant technology has also become a research focus. However, most flame retardants, when applied to plastic products, can affect the appearance and mechanical properties of the products, as well as problems such as difficulty in dispersion, processing, and high dust content. By preparing flame retardant masterbatch, the dispersibility of flame retardants in resins can be improved, the amount of flame retardants added can be reduced, the processing difficulty and cost can be lowered, and the impact of flame retardant addition on the mechanical properties of resins can be reduced, thus improving the working environment in the workshop. Therefore, improving the processing technology of flame retardant resin through masterbatch technology has become a development trend in the industry.

Chongqing Kejufu New Materials Co., Ltd. first prepared a high concentration base material+flame retardant melt on a continuous internal mixer by adjusting the formula and process, and then obtained the product through twin-screw extrusion granulation. Through the study of flame retardant masterbatch technology, it has been found that the use of high concentration flame retardant masterbatch can completely solve the problems of severe dust scattering, bridging of materials during the production and use of powder flame retardants, uneven dispersion of prepared flame retardant materials, and white spots on the surface of samples without affecting their performance.

Based on the research and development of the formula for high concentration flame retardant masterbatch, Kejufu Company has adjusted the formula and process to prepare flame retardant masterbatch with the highest possible concentration that can be directly used for injection molding. According to the calculation of raw material costs, the direct injection molding of flame-retardant masterbatch can effectively reduce customer material costs and greatly increase market competitiveness.

The mature flame retardant masterbatch of Kejufu Company can be applied to polyolefins (PP, PE, etc.), elastomers (TPE, TPV, EVA, TPU, etc.), glass fiber reinforced nylon (PA6, PA66), glass fiber reinforced polyester (PBT), achieving UL94-V0 and above flame retardant levels; Can be applied to polypropylene (PP) and achieve UL94-V2 flame retardancy.