High-toughness high-flame-retardance PVC wood-plastic composite material and preparation method thereof

Abstract

The invention discloses a high-toughness high-flame-retardance PVC wood-plastic composite material. The composite material is prepared from the following raw materials: PVC resin, plant powder, a processing modifier ACR-401, a foaming agent, a heat stabilizer, modified linear low-density polyethylene, attapulgite, halloysite, nanometer barium sulfate, polyacrylonitrile-based carbon fibers and a composite flame retardant, wherein the composite flame retardant is a mixture composed of sepiolite, boron phosphate, melamine polyphosphate, ammonium octamolybdate and diethyl aluminum hypophosphite ina weight ratio of (3-6): (2-6): (4-12): (3-9): (2-7). The preparation method of the high-toughness high-flame-retardance PVC wood-plastic composite material is simple in process, and the obtained wood-plastic composite material is high in impact strength, good in toughness, excellent in flame retardance and long in service life.

Description

technical field [0001] The invention relates to the technical field of wood-plastic composite materials, in particular to a high-toughness and high-flame-retardant PVC wood-plastic composite material and a preparation method thereof. Background technique [0002] PVC wood-plastic composite material is a new material made of plant fiber or powder as the main component and compounded with polyvinyl chloride resin. It has the advantages of moisture-proof, mildew-proof, and sound insulation, but there are also many shortcomings. On the one hand, There are a large number of polar C-Cl bonds in the molecular chain structure of the PVC resin used, and there is a large force between the molecules. Therefore, the prepared wood-plastic composite material has the defects of high brittleness, low impact strength, and poor toughness. It is easy to be brittle when impacted. On the other hand, there are flammable substances such as plant fibers in it, which makes it easy to burn. It cannot...

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Problems solved by technology

[0002] PVC wood-plastic composite material is a new material made of plant fiber or powder as the main component and compounded with polyvinyl chloride resin. It has the advantages of moisture-proof, mildew-proof, and sound insulation, but there are also many shortcomings. On the one hand, There are a large number of polar C-Cl bonds in the molecular chain structure of the PVC resin used, and there is a large force between the molecules. Therefore, the prepared wood-plastic composite material has the defects of high brittleness, low impact strength, and poor toughness. It is easy to be brittle when impacted. On the other hand, there are flammable substances such as plant fibers in it, which makes it easy to burn. It cannot achieve effective flame retardant effect in case of fire. This makes PVC wood-plastic composite materials greatly affected in the application process. limit