Due to the nature of flame retardant materials do not need to be further flame retardant processing, so the following content is to add type flame retardant materials. Flammable materials in general can include a thermoplastic resin, thermosetting resin, rubber, coating, fiber (natural fiber and synthetic fiber), wood, etc. Will all the flammable materials modification to be flame retardant material, can through the following way.
(1) thermoplastic resin including common polyolefin thermoplastic polyester resin, polyester, polyamide, etc., such as polyethylene, polypropylene, polystyrene, ABS (acrylonitrile butadiene styrene copolymer), polyethylene terephthalate (PET) and poly (butyl glycol terephthalate (PBT), polycarbonate (PC), nylon 6 and nylon 66, etc. For the above materials with the corresponding flame retardant additives in the screw extruder by melt blending extrusion granulation, made flame retardant granular materials, flame retardant modified. But usually flame retardant additives targeted, that is, certain flame retardant function in a variety of resin. Can be widely used kinds of flame retardants is less, so, usually need to be carefully chosen, experiment and composite applications.
(2) the thermosetting resin, thermosetting resin including epoxy resin, phenolic resin, polyurethane, unsaturated polyester resin, etc. The application of this kind of resin need multicomponent blend is used, therefore, flame retardant agent can be added at the same time, and through fast and stir evenly. After the completion of the mixture, under a certain temperature for curing reaction and curing after the completion of the form has the flame retardant performance thermosetting resin material.
(3) rubber can be used for wire and cable, rubber conveyor belt material, etc. High requirement of flame retardant. The preparation of flame retardant rubber is by putting the raw rubber, flame retardants and various additives blending, and plasticization, blending, the preparation of flame retardant after vulcanization rubber material.
(4) the paint coating is composed of multiple components blending. So when use, usually flame retardant and its compound composition and formation of coating components formed by mixing blend coating, coating steel structure or the surface of the material such as wooden structure, the formation of flame retardant coating.
(5) fiber including chemical manufacturing of fiber such as polyester, polypropylene, acrylic, spandex, etc., have natural fibers such as cotton and silk. Chemical fiber can be made from fiber before using a flame retardant performance of aggregate for spinning. The fiber which has the flame retardant function. In addition, can also be done through fiber and fabric finishing fire retardant function. The fabric in flame retardant finishing liquid impregnation, the flame retardant composition can be reactive, reaction with functional groups on the fiber, flame retardant structure key to the fiber, flame retardant composition can also be a physical adhesion on the fiber. But physical adhesion of flame retardant composition because flame retardant composition and the adhesion strength of the fiber is weak, so the poor water resistance. Lead to fiber loss of flame retardant after many washing function.
(6) wood timber are flammable materials. But as the natural materials, environmental protection and renewable, biodegradable and so on characteristics. Wood fire retardant usually by impregnation method. By high negative pressure, will be a flaw in the wood and fiber, the air in the pipe and the wood into flame retardant, in the liquid pressure to make flame retardant composition to the interior wood, flame retardant wood is formed after drying.
