High-temperature processed wood-plastic composite and preparation method thereof
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A wood-plastic composite material and high-temperature processing technology, which is applied in the field of wood-plastic composite materials and their preparation, can solve the problems of difficult high-temperature processing of wood-plastic composite materials, achieve high mechanical strength and modulus, improve bleed resistance, and improve The effect of interface strength
Inactive Publication Date: 2017-05-31
NORTHEAST FORESTRY UNIVERSITY
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that wood-plastic composite materials are difficult to realize
Method used
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specific Embodiment approach 1
[0026] Embodiment 1: The high-temperature processed wood-plastic composite material of this embodiment includes modified plant materials, general-purpose plastics, coupling agents or interfacial compatibilizers, lubricants, heat stabilizers, and mineral fillers; the modified plant The material is plant material modified with a modifier.
specific Embodiment approach 2
[0027] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the modified plant material is 10-100 parts by weight, the general-purpose plastic is 20-100 parts, and the coupling agent or interfacial compatibilizer is 0-100 parts. 20 parts, 0-15 parts of lubricant, 0-15 parts of heat stabilizer and 0-50 parts of mineral filler. Other steps and parameters are the same as those in the first embodiment.
specific Embodiment approach 3
[0028] Specific embodiment three: The difference between this embodiment and specific embodiment one is that the general-purpose plastic is one of polypropylene, polyethylene, polystyrene, acrylonitrile-butadiene-styrene copolymer, and polyvinyl chloride. One or more mixtures; the coupling agent is one or more of silane coupling agent, titanate coupling agent, maleic anhydride, maleic anhydride grafted polyolefin, isocyanate ; Described lubricant is one or more mixtures in polyethylene wax, polypropylene wax, paraffin, stearic acid, zinc stearate, calcium stearate; Described thermal stabilizer is dilauric acid Dibutyltin, dioctyltin dilaurate, dialkyltin maleate, bis(monobutylmaleate) dibutyltin, dioctyltin maleate, dioctyltin bis(isobutyl mercaptoacetate), dioctyltin bis( Thioctyl thioglycolate) or a mixture of one or more of them; the mineral filler is one or more of calcium carbonate powder, calcium silicate powder, talc, fly ash. Other steps and parameters are the same as...
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Abstract
The invention provides a high-temperature molded wood-plastic composite and a preparation method thereof and belongs to the technical field of wood-plastic composites and preparation methods thereof. The invention aims at solving a problem that the wood-plastic composite is hard to prepare at high temperature. The high-temperature molded wood-plastic composite contains a modified plant material, a general-purpose plastic, a coupling agent or an interface compatibilizer, a lubricating agent, a heat stabilizer and a mineral filler; and the modified plant material is a plant material modified by a modifying agent. The preparation method for the high-temperature molded wood-plastic composite comprises the steps: 1, modifying the plant material with the modifying agent; 2, mixing the modified plant material together with the thermoplastic plastic, the coupling agent, the lubricating agent, the heat stabilizer and the mineral filler; 3, melting and blending a mixture obtained in the step 2 by using a double screw; and 4, adding a blend to an extruder for extrusion molding; and carrying out injection molding by using an injection molding machine or carrying out hot press molding by using a hot press; or directly carrying out operations of the steps 2, 3 and 4 on the modifying agent solid and other solids.
Description
technical field [0001] The invention belongs to the technical field of wood-plastic composite material and its preparation method. Background technique [0002] Wood-plastic composite materials refer to green and environmentally friendly materials made of plant fiber powder and thermoplastics (including recycled plastics) through melting and mixing. It has the performance advantages of both lignocellulosic materials and polymer materials, that is, good dimensional stability, good water resistance, corrosion resistance, etc., so it is widely used as a substitute for solid wood materials or pure plastics in construction products, automobiles, etc. , gardens and outdoor facilities, etc., are developing rapidly. However, due to the low thermal degradation temperature of plant fibers, the processing temperature of wood-plastic composites is limited. [0003] Increasing the processing temperature of wood-plastic composite materials can reduce the viscosity of the plastic matrix,...
Claims
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Application Information
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