What Is The Difference Between Wood Flour And Wood Plastic?

The company has strong economic strength, advanced equipment, a complete production line of plastic and wood products, can undertake various types of plastic and wood products and UPVC wave tile processing business. As a key enterprise in Yixing City, the company relies on scientific management system, attaches importance to personnel training, establishes a product R&D team with first-line technicians as the core, and through directional cooperation, shares the scientific and technological achievements of professional research institutes, can develop various types of plastic wood products. This time, we will tell you about the structure of wood flour. Lignin can provide strength and durability for wood. The strength of wood plastic depends largely on lignin. Lignin is the residue of plant material after strong acid hydrolysis. It is a polymer macromolecule that penetrates into wood matrix. To a large extent, it reduces the chance of cellulose decomposition bacteria. The lignin content in coniferous wood is higher. Usually, the wood flour particles of coniferous wood are fragmented and the broad-leaved wood is cylindrical. Although lignin plays a major role in the mechanical properties of wood-plastic (wpc), it also has some adverse effects. Lignin is a photosensitive substance, which degrades under ultraviolet irradiation, which is the main reason for the fading of wood and wood plastic (WPC) materials. Under ultraviolet irradiation, lignin changes from brown to gray. Lignin can weaken the properties of wood-plastic (wpc) materials because it is flammable during processing and releases carbon dioxide, which can reduce the density of products and accelerate the fading of wood-plastic materials when exposed outdoors. Hemicellulose is also flammable during processing. VOC is the main release factor. Plastic wood materials can reduce the product density and cause steam explosion in the production process. The main reason is that instantaneous decompression and moisture boil rapidly in the whole wet wood particles. Wood fiber aspect ratio has a certain effect on the properties of wood-plastic (wpc) materials. The bigger the aspect ratio, the better the bending properties. This is because there are more fibers in the direction of melt flow. During extrusion, the aspect ratio of fibers will decrease. The larger the aspect ratio, the better the fluidity of the melt, and the lower the shrinkage of the material. In wood-plastic (wpc) materials, the more cellulose content, the more serious the fading, but the oxidation resistance of materials will increase, the hot melt viscosity will also increase, and the smaller the particle size of wood flour, the higher the viscosity. The wood usually contains tannins, which form black complexes when mixed with trivalent iron. The "tannin stain" is formed around nails of wood-plastic (wpc) plywood.