Production method of foaming type wood plastic recombination wood

Abstract

A foamed composite wood is prepared through treating the sheets made of plant stems by coupling agent, modifying plastic powder by compatibilizer, adding foamer, coating it on the surfaces of said sheets, laminating, and hot pressing at 90-260 deg.C under 0.3-15 MPa while foaming.

Description

technical field [0001] The invention relates to a production method for making wood-plastic profiles as raw materials. It belongs to the technical field of production of new building materials. Background technique [0002] Wood-plastic technology is a new technology developed in recent years to mix plastic and wood, two materials with large differences in properties, and process them into products. Its content is to crush wood or plant stems into 20-100-mesh powder, mix and granulate them as fillers and plastics, and then make plastic-wood profiles by extrusion, molding, or injection. (See "Wood Plastic Production Technology and Waste Plastic Utilization" published by "Chemical Industry Press" P.1-5.) The shortcoming of this technology is that its plant fiber bundles are also cut off after the wood or plant stems are crushed. Or damage, resulting in greatly weakened force strength, the prepared profile can not be used as a force structure. The second is that wood powder ...

AI Technical Summary

Problems solved by technology

) The disadvantage of this technology is that the plant fiber bundles are cut or destroyed after the wood or plant stems are crushed, resulting in greatly weakened stress strength, and the prepared profiles cannot be used as stressed structural parts.

Therefore, the proportion of wood powder or plant fiber in the wood-plastic profile should not be too high, usually below 60%, which makes the cost of the product relatively high.