With the advancement of science and technology and the improvement of living standards, polymer materials, especially synthetic polymers, such as plastics and rubber, have become increasingly important in people's lives, and their applications have been expanding year by year. However, most of the organic polymer materials have flammable characteristics in the air to varying degrees. In order to realize its application in military, aerospace, transportation, electric power, and civilian industries, the flame retardant modification thereof becomes a new topic. The current ideal method for flame retardant modification of plastics is to increase the fire resistance of plastics by adding products such as flame retardants or flame retardant masterbatches.
Flame-retardant masterbatch (bromine/halogen), also known as flame-retardant masterbatch, is one of the most excellent flame-retardant products in plastics and rubbers. Flame-retardant masterbatch (masterbatch) is a flame retardant. Based on the combination of a variety of flame-retardant components organically combined, modified and synergistic effects, and through a twin-screw or three-screw extruder after mixing, extrusion, granulation and a granular product. Unlike flame retardants, flame retardant master batches are easy to add in the resin, clean and hygienic, high flame retardant efficiency, small amount of addition, little effect on the mechanical properties of the resin, and it is not easy to cause delamination, pattern, precipitation and other undesirable phenomena after the addition. , Save manpower, material costs and time and many other advantages. In general, the flame retardant masterbatch dispersion in the resin, fluidity, compatibility with the resin and thermal stability and weatherability are much better than ordinary flame retardants, in addition to the flame retardant masterbatch properly formulated flame retardant Efficiency and efficiency (cost-effectiveness) are also much better than ordinary flame retardants. Therefore, the current flame retardant masterbatch has become one of the best choices for fire-retardant plastic products to achieve fire protection requirements, and has become an effective alternative to flame retardant powders.
1, easy to use: flame retardant masterbatch (masterbatch) mostly flake or strip tablet size particles, exactly the same size as the general plastic particles, improve their mutual compatibility, making it easier to disperse and add and health And reduce the waste of volatile.
2, compatibility with the resin is good: under normal circumstances flame retardant masterbatch (masterbatch) have been specially treated to improve its compatibility with the plastic resin, making it even if the amount of resin in the larger It is prone to problems such as delamination, blooming, and patterns.
3, reduce costs, increase product added value: often through the addition of flame retardant masterbatch (masterbatch) to make general plastic with or close to the application requirements of engineering plastics, increase the added value of the product and reduce the cost of raw materials.
Because flame-retardant masterbatch (masterbatch) is used in plastics in flame retardant efficiency, environmental protection, increase production efficiency, convenience, etc. It has become an effective substitute for traditional flame retardants and has been widely used in the manufacture of plastics. Granules, extrusion, injection molding and other aspects.
The flame retardant master batches that can be popularized and applied at present are halogen (Br, Cl), phosphorus (red phosphorus, phosphorus compounds, etc.), nitrogen (commonly known as intumescent flame retardant masterbatches) and inorganic flame retardant masterbatches ( Aluminum hydroxide, magnesium hydroxide, etc.) dominated.
Halogen-based flame-retardant masterbatch (masterbatch) is the most popular flame-retardant masterbatch in most resins today, because its own organic nature makes it have a better affinity with plastics, resulting in a decrease in the mechanical properties of finished products. Less and high flame-retardant efficiency, less addition in the resin, high cost performance. The disadvantage is that some of them are biologically toxic and are prohibited in some international standards. And due to poor environmental performance, especially in Europe, there is a tendency to be eliminated.
Phosphorous flame-retardant masterbatch also belongs to the more commonly used products. In some resins, its flame-retardant efficiency is even higher than that of halogen-based systems, but its existence of poor color coordination, poor compatibility, low oxygen index, and processing technology Many disadvantages, such as low applicability, can only be adopted by special industries. Intumescent flame retardant masterbatch has a narrow range of application due to its low flame-retardant efficiency and easy “bubble” and other incompatibility. Inorganic flame retardant masterbatch, such as magnesium hydroxide. The flame-retardant products have good environmental protection, do not emit toxic gases, have a small amount of smoke, and the oxygen index of the flame-retardant plastic is high. However, due to the excessively high added amount of the flame-retardant standard and the natural discordance between inorganic substances and organic substances, Although the finished product obtained after the modification treatment is still difficult to meet the needs of most industries, its promotion has been limited. It is believed that after the progress of the process, relying on its environmental protection advantages can also be gradually recognized by the market.
Polyethylene flame retardant masterbatch
According to different PE processing performance and processing technology, there are series of polyethylene flame-retardant masterbatch such as drawing grade, extrusion grade, film grade, coating grade, antistatic grade and so on. Completely replace powdered flame retardant, with high concentration, good dispersion, simplified production process, high cost performance and so on. This can solve most of the flame-retardant PE molding problems, to meet the needs of different products. Widely used in polyethylene dense construction safety nets, Christmas trees, artificial turf, polyethylene construction Threading pipes, mining pipes, cables, foam boards, automotive harness tubes, flame retardant tarpaulin, fire retardant film, fireproof cloth coating , electronic packaging and so on.
Polypropylene flame retardant masterbatch
According to PP processing performance and processing technology, there are series of polypropylene flame-retardant masterbatch such as drawing grade, extrusion grade, film grade, antistatic grade, and injection molding grade. With the advantages of high concentration, good dispersion, simplified production process and high cost performance, it completely replaces powdered flame retardant. In order to solve the majority of PP molding flame retardant problems to meet the needs of different products. Widely used in polypropylene high-strength wire, flat yarn, artificial wigs, electrical safety belts, artificial grass, sports nets, PP automotive harness tubes, plates, mining belts, packing belts, electronic injection molded parts, electrical skeletons, electrical enclosures, European sockets and so on.