Flame retardant granules (masterbatches) have become an effective alternative to traditional flame retardants due to their advantages in flame retardant efficiency, environmental friendliness, improved production efficiency, and convenience in plastics. They are widely used in various aspects of plastic granulation, extrusion, and injection molding.
Currently, the flame retardant granules widely used are mainly halogen-based (Br, Cl), phosphorus-based (red phosphorus, phosphorus compounds, etc.), nitrogen-based (usually known as intumescent flame retardant masterbatches), and inorganic flame retardant granules (aluminum hydroxide, magnesium hydroxide, etc.).
Halogen-based flame retardant granules (masterbatches) are currently the most popular flame retardant masterbatches for most resins because their organic nature gives them good affinity with plastics, resulting in less degradation of the mechanical properties of the finished product and high flame retardant efficiency. They also require a smaller addition amount to the resin, making them cost-effective. The disadvantages are that some are biotoxic and are prohibited in some international standards. Furthermore, due to their poor environmental performance, especially in Europe, they are trending towards being phased out.
Phosphorus-based flame-retardant granules are also widely used products. In some resins, their flame-retardant efficiency is even higher than that of halogen-based granules. However, they have many drawbacks, such as poor color coordination, poor compatibility, low oxygen index, and limited applicability to processing technologies, often limiting their use to specific industries. Intumescent flame-retardant granules have even narrower applications due to their low flame-retardant efficiency and tendency to foam. Inorganic flame-retardant granules, such as magnesium hydroxide, offer good environmental performance, emitting no toxic gases and producing low smoke. They also produce flame-retardant plastics with a high oxygen index. However, the excessively high addition amount required to achieve ideal flame-retardant standards, coupled with the inherent incompatibility between inorganic and organic substances, means that even after modification, the resulting products are still difficult to meet the needs of most industries, thus limiting their widespread adoption. It is believed that with advancements in processing technology, their environmental advantages will gradually gain market acceptance.
Polyethylene Flame Retardant Series
Product Applications: Based on different PE processing properties and processes, a series of polyethylene flame retardants are available, including fiber-grade, extrusion-grade, film-grade, coating-grade, and antistatic-grade. These completely replace powdered flame retardants, featuring high concentration, good dispersibility, simplified production processes, and high cost-effectiveness. This solves most flame retardant problems in PE molding, meeting the needs of various products. Widely used in polyethylene close-mesh building safety nets, Christmas trees, artificial turf, polyethylene building conduits, mining pipes, cables, foamed boards, automotive wiring harnesses, flame-retardant tarpaulins, flame-retardant films, fireproof cloth coatings, electronic packaging, etc.
Product Series: Based on different PP processing properties and processes, a series of polypropylene flame retardants are available, including fiber-grade, extrusion-grade, film-grade, antistatic-grade, and injection-molding-grade. These offer advantages such as high concentration, good dispersibility, simplified production processes, and high cost-effectiveness, completely replacing powdered flame retardants. This solves most flame retardant problems in PP molding, meeting the needs of various products. It is widely used in polypropylene high-strength yarn, flat yarn, artificial wigs, electrical safety belts, artificial turf, sports nets, PP automotive wiring harnesses, sheets, mining mesh belts, packing straps, electronic injection molded parts, electrical frame, electrical housing, European-style sockets, etc.