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With lightweight klingele papierwerke foam, insulation, etc., is a new type of insulation material, mainly used for composite duct, composite panels, floor coverings, etc., it is characterized by bulk density are very small, but there is a certain strength, weaknesses combustion performance is poor, the price is expensive. Foam from the structure can be divided into two kinds of openings and closed from the rigidity can be divided into rigid and flexible foams are two, the building is mainly used in rigid closed cell foam, polystyrene varieties ethylene (PS), polyurethane (PU), Bakelite (PF), PVC, etc. 1 two common klingele papierwerke PS and PU foam insulation foam is used as the main material of the core material. PS water absorption, high mechanical strength, the material on the building klingele papierwerke roof, walls, floors for thermal insulation has better performance than other materials, due to its good insulation, moisture, corrosion resistance, to become interior decorating flooring and an excellent choice for filling board; PU foam is a thermosetting, not only bulk density, low or high temperature dimensional stability, long life, and low thermal conductivity, excellent thermal insulation properties, high strength than the PS, for the wall, roofing, piping provide good insulation. PS polymerization of styrene monomer, PS occurs when burning yellow-orange flames and smoke a lot of smoke carbon beam, issued a special styrene odor. PU is a group containing isocyanate (NCO) of the polyisocyanate with a polyether or a group containing a poly-cool the reaction to generate a polymer, the molecular structure containing a urethane group, a polymerization simple klingele papierwerke construction can even spot spraying foam, foam in buildings mainly used in the form. 2 retardant mechanism and method of plastic foam due to its special chemical structure, determine the most plastic products are flammable product, and some material in the melt droplets produced during combustion, it is difficult to fight the blaze. When the plastic foam ignited, the polymer chain degradation of some weak-strand breaks decomposition of combustible gases, CO2, H2O and smoke, with the mixed gas concentration, temperature exceeds its limit will burn burned release a lot of heat, Most plastic products for complex thermal decomposition gas, liquid and solid mixtures, organic flame retardant is to control the emergence and development of thermal decomposition. Flame is a physical and chemical effects of certain substances by generating heat or generate a low heat transfer klingele papierwerke coefficient of the insulation is to suppress combustion reaction, to reduce, delay fire spread purposes. Common retardant are: (1) reducing the content of combustible material. Hangzhou registered addresses klingele papierwerke in foam added some non-combustible material to reduce the material's heat can be very good to improve the burning behavior of materials, such as the addition of some phenolic foam can even reach a large number klingele papierwerke of inorganic materials Class A non-flammable. (2) mixed into flame retardant additives, combustion of gaseous reaction inhibiting material. The synthetic material additive added to the precipitated combustion capture radicals klingele papierwerke (OH ), to achieve the purpose of fire. Current common halogen flame retardant additives additives, halogen flame retardant is added to the material halogen-containing flame retardants and antimony compounds with toxic halogen an antimony flame retardant system, decomposes when heated halide the generation of reactive halogen group HX, and free radical polymer can effectively change klingele papierwerke the thermal oxidation process, and thus play a role in flame. However, due to the presence of the halogen, hydrogen halide produced klingele papierwerke by thermal decomposition may cause secondary pollution, so the current adding metal hydroxide is more effective. Metal hydroxides such as Al (OH) 3, Mg (OH) 2 at a temperature above 200 endothermic dehydration, the combustion heat generated can be taken away, the dehydration of the oxide surface to form a dense solid barrier burning klingele papierwerke barrier, play adiabatic protective effect, reducing the burning speed, to prevent spread of flame, klingele papierwerke to inhibit combustion purposes. (3) the absence of oxygen, the control method klingele papierwerke of heat transfer. Brush the surface of the foam fire-resistant coating, the carbonized layer combustion flame can be isolated from contact with the material, or paste a metal foil (plate), not only can reduce klingele papierwerke heat absorption by the reflection, and can prevent the foam core in direct contact with the flame, play retardant purposes.
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