New high-temperature resistant plastic wood material

Plastic wood composite material is a new type of composite material that has emerged in recent years. Currently, the common plastic wood composite material is a composite material made of polyethylene, polypropylene, or polyvinyl chloride and waste plant fibers such as wood powder, rice husk, straw, etc., through different processing methods such as hot pressing composite and melt extrusion. Mainly used in industries such as building materials, furniture, logistics and packaging. The board formed by hot extrusion of plastic wood composite materials is called extruded plastic wood composite board. However, the existing plastic wood composite materials have insufficient high-temperature resistance and cannot be applied in industries with high material requirements. For example, indoor and outdoor needs, automotive, high-speed rail decoration, and high-temperature resistant kitchen wall panels.

In order to overcome the shortcomings of high-temperature resistance of plastic wood composite materials in existing technologies, a new high-temperature resistant plastic wood material is provided. According to relevant patent reports, the new high-temperature resistant plastic wood material is obtained by mixing wood powder, polyethylene, polyvinyl chloride, high-temperature additives, maleic acid grafted polyethylene, lubricants, and antioxidants evenly and then feeding them into a twin screw extruder for melt extrusion and granulation. Provide a new composition of plastic wood materials, which can significantly improve the high-temperature resistance of plastic wood materials by adding high-temperature resistant additives. Experiments have shown that the Vicat softening point of the new plastic wood material is above 160 ℃, indicating its excellent high-temperature resistance. High temperature resistant plastic wood composite materials solve the problem of thermal stability of wood powder during processing, solve the problem of wood powder being unable to composite with engineering plastics, greatly improve the mechanical properties of plastic wood composite materials, and expand the application range of plastic wood composite materials. The production method of high-temperature resistant plastic wood composite material includes the following steps:

1. Fully permeate the fibrous wooden flocs with a solution containing flame retardants;

2. Drying the wood wool with flame retardant solution, so that the flame retardant is combined with the wood wool in the form of water of crystallization;

3. The wood floc binder with water of crystallization flame retardant obtained in step 2 is sealed with polyolefin resin and additives to make the temperature reach the melting condition of polyolefin resin to form a plastic wood composite in the state of mutual crosslinking;

4. Extrude and granulate the plastic wood mixed material. Provided a production method for high-temperature resistant composite plastic board. The plastic wood material board of the present invention has significant characteristics such as weather resistance, anti-corrosion, waterproofing, flame retardancy, high strength, etc., and can be applied in harsh environments with high requirements for board performance.