Polyvinyl chloride-based wood plastic composite and preparation method thereof
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A technology of wood-plastic composite materials and wood powder, which is applied in the field of wood-plastic materials, can solve problems such as difficult to meet the complex requirements of furniture design, the combination of plastic and wood materials is not tight, and the wood effect is not ideal, so as to reduce equipment costs and labor costs. Low cost, excellent appearance, and various colors of products
Inactive Publication Date: 2011-02-16
杨大可
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In terms of furniture design and manufacturing, since the production process of ordinary wood-plastic materials is extrusion molding, they can only present a straight line in most cases, with almost no curves and radians. Although some domestic wood-plastic enterprises have recently begun to design products, but the curvature of these products can only be applied to architecture, and it is difficult to meet the complex requirements of furniture design
[0004] At present, there are t
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[0025] A PVC-based wood-plastic composite material, which is mainly composed of wood powder or wood chips mixed with plastic, the weight ratio of its components is as follows:, the more preferred weight ratio is PVC 32-51%, stabilizer 1-3% , processing aid 1-2%, impact modifier 2-3%, lubricant 2-3%, wood powder 40-60%; the wood powder fineness is 120 mesh, and the moisture content is 5%. The stabilizer in the components can be organotin stabilizer, the plastic resin can be recycled polyvinyl chloride (PVC) powder, and the lubricant can be TR251. The above-mentioned proportioning raw materials can be purchased from the market.
[0026] A method for making PVC wood-plastic composite materials, including material selection, crushing, proportioning, mixing, kneading, cooling and solidification, cutting finished products and other process steps, wherein
[0027] Material selection: choose commercially available wood flour, such as poplar wood flour, kemu wood flour, etc. The fin...
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Abstract
The invention provides a polyvinyl chloride (PVC)-based wood plastic composite and a preparation method thereof. The PVC-based wood plastic composite is mixed by the following raw materials by weight percent: 32-51% of PVC, 1-3% of stabilizer, 1-2% of processing additive, 2-3% of impact modifier, 2-3% of lubricant and 40-60% of wood flour. The preparation method comprises the following steps: mixing the raw materials according to the formula ratio, using a conical twin-screw for mixing, cooling and solidifying, and cutting to obtain the finished product. Compared with the common wood plastic material, the prepared molding-grade PVC-based wood plastic composite has the advantages of high wood flour filling volume, good high temperature fluidity and the like and can be directly used for molding production; and the formed wood plastic product has good comprehensive physical-mechanical performance and appearance, strong wood feeling and obvious cost advantage.
Description
technical field [0001] The invention belongs to the field of wood-plastic materials, and relates to a PVC-based wood-plastic composite material and a preparation method. Background technique [0002] The practical application range of wood-plastic materials is very wide. In the packaging and warehousing industry, it can be used to make pallets, packing boxes, centralized equipment, warehouse pads, cargo racks, etc.; in urban construction gardening and home decoration, it can be used to make gazebos, seats, and flower pots. , small bridges, fences, trash cans, pillars, wall panels, corner lines, dadoes, door cabinets, furniture and building templates, etc. [0003] At present, the application of ordinary PVC wood-plastic materials still has certain limitations. In terms of furniture design and manufacturing, since the production process of ordinary wood-plastic materials is extrusion molding, they can only present a straight line in most cases, with almost no curves and radi...
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