Silane coupling agent CFS-838 improves the compatibility between wood powder and resin. Add wood powder to resin or waste plastic, and then add a certain proportion of silane coupling agent CFS-838 (aminopropyl triethoxysilane) to modify the surface. A new type of composite material - wood-plastic material is made by thermoforming. Because wood flour contains hydroxyl groups, these hydroxyl groups form intermolecular hydrogen bonds or intramolecular hydrogen bonds, which make wood flour highly absorbent, with a water content of up to 10%, and strong polarity; most thermoplastics are non-polar It is hydrophobic, so the compatibility between the two is poor, and the bonding force of the interface is very small. Using high-quality silane coupling agent CFS-838 to modify the surface of polymer-wood powder can improve the interface affinity between wood powder and resin, and the modified wood powder filler has enhanced properties, which can transfer the relationship between filler and resin. The stress between them increases the strength of the composite material. Therefore, in order to obtain plastic-wood composite materials with excellent performance and qualified conditions, the compatibility between materials must be solved. Adding silane coupling agent CFS-838 can change the inherent hydrophilicity of the surface of wood powder, making it easier and more effective to combine wood powder with resin.

Wood-plastic composite material is a new type of environmental protection material. The development and research of wood powder and waste plastic composite material can not only provide opportunities to make full use of natural resources, but also reduce environmental pollution caused by waste plastics. Therefore, this The wood-plastic composite material is a green environmental protection material that saves energy and protects the environment. Its application range is also very wide, mainly used in building materials, automobile industry, packaging and transportation of goods, decorative materials and daily utensils, etc., and has broad development prospects. As an organic filler for plastics, wood flour has excellent properties unmatched by many other inorganic fillers: wide source, low price, low density, good insulation, and less wear to processing equipment. With the continuous development of wood-plastic composite technology and the increasing demand for environmental protection, wood-plastic composite technology has transitioned to multi-component waste plastics and wood powder to produce wood-plastic composite materials, but it is not as widely used as inorganic fillers. The main disadvantages are poor compatibility with matrix resin, poor dispersion effect in molten thermoplastics, poor fluidity, and difficulty in extrusion molding. How to improve the inherent defects of composite materials, which requires the use of silane coupling agent CFS-838 to improve the dispersion performance of wood powder, so that the wood powder can be evenly distributed in the resin, and it also greatly enhances the strength of wood-plastic materials.

The amount of coupling agent The amount of silane coupling agent CFS-838 is related to the surface area of the powder particles, and the addition ratio is not proportional to the activation effect of the filler. The wood powder particles are not ideally dispersed in the matrix, but exist in a certain aggregated state. The aggregated wood powder has an unfavorable effect on the flow performance of the filling system. An appropriate amount of dispersant can be added to reduce the number of wood powder particles agglomerated, improve the agglomeration phenomenon, and make the powder fully dispersed in the resin. In addition, wood-plastic composites are pseudoplastic fluids in the molten state. As the shear rate increases, the apparent viscosity decreases. Therefore, in order to make the filling system have good processing flow properties, a higher shear stress should be used as much as possible to reduce the shear viscosity of the filling system and make it suitable for extrusion molding. Silane coupling agent CFS-838 can not only improve the compatibility between inorganic powder and thermosetting resin, but also improve the interface characteristics between wood powder and resin. Experiments show that the silane coupling agent CFS-838 is definitely an indispensable surface modifier in the production process of wood-plastic materials, and plays a finishing touch.