Polishing slag modified flame-retardant PVC plasticizing paste and preparation method thereof

Abstract

The invention discloses a polishing slag modified flame-retardant PVC plasticizing paste and a preparation method thereof. According to the polishing slag modified flame-retardant PVC plasticizing paste, synthetic vegetable fatty acid ester with flame retardance and stone, ceramic tiles and artificial stone polishing slag with flame retardance and smoke suppression are added into a formula to generate a synergistic flame-retardant effect through the matching of the two components; the synthetic vegetable fatty acid ester can absorb a large amount of oxygen, and be oxidized and decomposed intoCO2 and H2O after being heated, the CO2 isolates the oxygen, and the H2O takes away heat, so that the flame retardance is achieved; the abrasive dust in the polishing slag contains magnesium oxide, magnesium hydroxide, magnesium chloride hexahydrate and other materials, and is a composite flame retardant with multiple flame retardant mechanisms; and the SiO2 powder in the polishing slag is non-flammable and resistant to high-temperature decomposition, is used as a filling agent to be filled into a paste resin product in quantity, and can form a carbonization layer on the surface of the productduring combustion, so that heat and oxygen are prevented from entering, and the flame retardant mechanism of dehydration, dilution, heat absorption and cooling of the flame retardant can play a greatrole in flame retardance and smoke suppression.

Description

technical field [0001] The invention relates to the technical field of PVC plasticizer, and mainly relates to a flame-retardant PVC plasticizer modified by polishing slag and a preparation method thereof. Background technique [0002] In the prior art, PVC paste resin, plasticizer, stabilizer and other additives are formulated into a liquid plasticizer. This liquid plasticizer can be coated on the substrate, injected into the mold, and sprayed on the surface of the object. According to a specific formula, By heating, the plastisol is plasticized into a solid PVC plastic product. Paste resin plastic products have simple processing technology and equipment, low investment and low production cost. They are suitable for the production of various types and small batches of products, and new products that cannot be obtained by traditional processing methods can be obtained. Polyvinyl chloride PVC resin itself has good flame retardancy, and its chlorine content is as high as 56%. ...

AI Technical Summary

Problems solved by technology

The use of synthetic vegetable fatty acid esters to replace the small molecule plasticizers of the original technology solves the problem tha...

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