Novel flame-retardant wood-plastic composite

Abstract

The invention discloses a novel flame-retardant wood-plastic composite. The novel flame-retardant wood-plastic composite is prepared from the following components in parts by weight according to a scientific ratio: 4-6 parts of polyvinyl butyral resin, 0.5-0.7 part of initiators, 5-7 parts of polytitanosiloxane, 40-50 parts of wood fiber powder, 25-30 parts of plastics, 4-8 parts of flame retardants, 1-5 parts of compatilizers, 3-7 parts of glass fiber, 2-4 parts of aluminum oxide hollow spheres, 0.2-0.4 part of dispersants, 1-3 parts of lubricants and 1-3 parts of stabilizers. The novel flame-retardant wood-plastic composite has the advantages of small addition amount, excellent flame-retardant performance and excellent mechanical performance, and has development potential.

Description

technical field [0001] The invention relates to a novel flame-retardant wood-plastic composite material, which belongs to the technical field of wood-plastic composite materials. Background technique [0002] Wood-plastic composites (Wood-Plastic Composites, WPC) use thermoplastic materials as a matrix, pretreated plant powder or wood fiber as a filler or reinforcement, and mix with various additives required in a certain proportion. A composite material prepared by extrusion, lamination, molding or injection molding. It has good elastic modulus, compression resistance, bending resistance, durability and other properties, and also has the characteristics of raw material resources, cost economy, product plasticization, environmental protection and recycling. Therefore, wood-plastic composites can be widely used in many fields. [0003] Although wood-plastic composite materials have some excellent properties of wood and plastic, as well as the advantages of environmental fri...

AI Technical Summary

Problems solved by technology

Although the addition of these flame retardants can achieve a certain flame retardant performance, there are still some problems: the pollutants produced during the combustion of halogen-based flame retardants pose many threats to the environment and humans; the amount of filled flame retardants is relatively large , will have a greater impact on the mechanical properties of materials; although intumescent flame retardants can reduce the thermal degradation temperature of wood fibers, they will also affect the mechanical properties of materials; synergistic flame retardants cannot be used alone in wood-plastic composites. Used in materials, only play a synergistic auxiliary role

Although this method can obtain better flame retardant performance, the addition amount is relatively large, which is not economical, and the material cost increases, which is also detrimental to its mechanical properties.

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