High-strength PE (polyethylene) wood-plastic composite material and preparation method thereof
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A wood-plastic composite material, high-strength technology, applied in the field of high-strength PE wood-plastic composite material and its preparation, to achieve good tensile strength, promote interface properties, and excellent performance effects
Active Publication Date: 2014-01-22
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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Problems solved by technology
At present, there is no domestic enterprise capable of producing high-strength wood-plastic composite materials. Based on the current situation of the domestic wood-plastic industry, the successful development of high-strength wood-plastic composite materials will help break through the bottleneck of the development of the domestic wood-plastic industry and promote the development of my country's wood-plastic industry. Develop and enhance the international market competitiveness of my country's wood-plastic industry
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Embodiment 1
[0021] A high-strength PE wood-plastic composite material, its raw material composition is as follows:
[0022] Table 1:
[0023]
[0024] Wherein, described interfacial compatibilizer is prepared like this:
[0025] 250 mass parts of acrylic acid, 250 mass parts of anhydrous polyethyleneimine (M w =2000) and 0.5 parts by mass of phenothiazine were added into the reactor, nitrogen gas was passed through, heated to 130°C, stirred and reacted for 2 hours, and the product was obtained.
Embodiment 2
[0027] A high-strength PE wood-plastic composite material, its raw material composition is as follows:
[0028] Table 2:
[0029]
[0030] Wherein, described interfacial compatibilizer is prepared like this:
[0031] 150 parts by mass of methacrylic acid, 400 parts by mass of anhydrous polyethyleneimine (M w =2000) and 0.7 parts by mass of 1,4-hydroquinone were added into the reactor, nitrogen was introduced, heated to 110°C, stirred and reacted for 3 hours to obtain the product.
Embodiment 3
[0033] A high-strength PE wood-plastic composite material, its raw material composition is as follows:
[0034] table 3:
[0035]
[0036] Wherein, described interfacial compatibilizer is prepared like this:
[0037] 100 parts by mass of acrylic acid, 500 parts by mass of anhydrous polyethyleneimine (M w =4000) and 0.3 parts by mass of 2,4-dimethyl-6-tert-butylphenol were added to a 1L reactor, nitrogen gas was passed through, heated to 150°C, stirred and reacted for 1 hour, and the product was obtained.
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Abstract
The invention discloses a high-strength PE (polyethylene) wood-plastic composite material which is prepared from the following raw materials in parts by mass: 20-50 parts of waste PE plastic, 40-70 parts of plant fiber powder, 0-15 parts of thermoplastic elastomer, 2-6 parts of interfacial compatilizer, 0-20 parts of reinforcing filler, 1-6 parts of lubricant, 0.4-0.6 part of anti-aging assistant and 0.1-0.5 part of initiator. The invention also discloses a preparation method of the PE wood-plastic composite material, which comprises the following steps: 1) uniformly mixing the raw materials, and carrying out extrusion and granulation in an extruder; and 2) carrying out extrusion forming on the granules to obtain a plate. The wood-plastic composite material has excellent properties, such as favorable tensile strength, bending strength, bending modulus and the like. The interfacial compatilizer can effectively promote the interfacial properties of the substrate with other components, thereby enhancing the related properties of the composite material. The composite material has excellent workability, and can be sawed, nailed or shaven.
Description
technical field [0001] The invention relates to a high-strength PE wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composites (Wood-plastic composites / WPC) are 50% or more low-value, waste wood fibers or crop fibers that are crushed and added to waste thermoplastics as fillers in the form of fibers or powders. Plastic processing technology, a new type of material prepared by extrusion, hot pressing, injection molding and other processing methods. It is an organic combination of wood flour and plastic, and has the characteristics of both wood flour and plastic, effectively meeting the material needs of related fields. The main characteristics of wood-plastic composite materials: (1) The surface hardness and wear resistance are significantly improved compared with wood; (2) Good dimensional stability, no cracking, no warping, low water absorption and moisture absorption; (3) Heat resistance Higher (4) No need for p...
Claims
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Application Information
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