Low-combustion-heat polyvinyl chloride composite and preparing method thereof

Abstract

The invention provides a low-combustion-heat polyvinyl chloride composite and a preparing method thereof. The low-combustion-heat polyvinyl chloride composite has the combustion heat of A2 grade, hasgood mechanical performance and forming processing performance, and is simple in formula and low in preparing cost. The composite comprises polyvinyl chloride resin, an impact modifier, a heat-inhibiting compound, a thermal stabilizer and a flow modifier, wherein the heat-inhibiting compound is the combination of hydroxide and carbonate. The composite comprises, by weight, 30-60 parts of polyvinylchloride resin, 3-6.2 parts of the impact modifier, 28-100 parts of hydroxide, 80-150 parts of carbonate, 1.2-3 parts of the thermal stabilizer and 1-2.4 parts of the flow modifier.

Description

technical field [0001] The invention relates to the technical field of fireproof building materials, in particular to a fireproof polyvinyl chloride composite board material and a preparation method thereof. Background technique [0002] In recent years, major vicious fires in public places have occurred from time to time. Using flame retardant products and fire safety design technology to build a reliable passive fire protection system is one of the important means to avoid vicious fire accidents from the source. For this reason, the country officially implemented the "Classification of Combustion Behavior of Building Materials and Products" (GB 8624-2006) standard on March 1, 2007. In this national standard, the combustion calorific value (PCS) of materials is an important criterion for measuring the combustion performance classification of building materials and products. [0003] Due to the advantages of light weight and easy processing, polymer composite materials hav...

AI Technical Summary

Problems solved by technology

However, due to the low dehydration decomposition temperature (-100°C) of the components used in this formula system, such as hydrated salt, etc., it can only be mixed at room temperature, molded, and freeze-dried, which cannot be applied to conventional sheet materials. Polymer composites prepared by melt blending

Patent CN 102558653A discloses a class A fireproof core material prepared by using magnesium hydroxide as a heat-inhibiting compound; the filling amount of magnesium hydroxide in the matrix is ​​as high as 80-90% (weight percentage), such a high magnesium hydroxide The amount of filling will inevitably lead to a sharp increase in material cost and a decrease in mechanical properties. Its applicability is relatively limited, and it is difficult to apply to materials with high mechanical properties.

Chinese patent CN103396629A discloses a smoke-suppressing, flame-retardant and sound-insulating PVC material, which uses antimony oxide, dodecabromodiphenyl ether, zinc borate, ferrocene and aluminum hydroxide as flame-retardant components to achieve the purpose of smoke-suppressing and flame-retardant; However, the flame retardant system used involves many components and the formula is relatively complicated.

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