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Preparation method and application of acrylate wood-plastic composite compatibilization modifier

An acrylic and wood-plastic composite technology, which is applied in the field of wood-plastic composite material preparation, can solve problems such as poor interface compatibility, increase bonding strength, and weak bonding, and achieve good mechanical properties, increase composite ability, increase strength and The effect of stability

Inactive Publication Date: 2013-06-12
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In summary, the current research on wood-plastic is mainly based on the modifiers in the existing market, which are extruded or molded after simple mixing and compounding. The preparation of composite wood-plastic materials, but less research on the mechanism of wood-plastic composite materials, and the key issues in the development of wood-plastic composite materials[Plastic Manufacturing, 2007, 3: 35-39]It is necessary to solve the interface bonding force between plastic and wood powder

Method used

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  • Preparation method and application of acrylate wood-plastic composite compatibilization modifier
  • Preparation method and application of acrylate wood-plastic composite compatibilization modifier
  • Preparation method and application of acrylate wood-plastic composite compatibilization modifier

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Example 1: Compression molding of polyethylene / bagasse wood-plastic composite material.

[0039] Step 1: Bagasse Pretreatment

[0040] First, crush the bagasse, and then use a vibrating sieve to screen out 40-80-mesh components, and pack them into bags for later use.

[0041] Step 2: Synthesis of Acrylate Compatibilizer

[0042] First, methyl methacrylate (MMA), butyl acrylate (BA), glycidyl methacrylate (GMA) and vinyl acetate (VAc) were mixed. Under the condition of adding 0.5% (mass ratio) of hydroquinone, distill under reduced pressure, remove the polymerization inhibitor, and store at low temperature in the dark; silane coupling agents KH-550 and KH-570 are distilled under reduced pressure, and put them in a refrigerator for sealed storage spare.

[0043] Add 120 mL of distilled water to a 250 mL three-neck flask, add 2.5 g of sodium p-dodecylbenzenesulfonate, 1.0 g of calcium stearate and 1.0 g of magnesium stearate and heat up to 90°C, stirring to fully ...

Embodiment 2

[0052] Embodiment 2: extrusion molding of polyethylene / rice husk powder wood-plastic composite material.

[0053] The first step: rice husk powder pretreatment

[0054] First, crush the rice husk, and then sieve the 40-80-mesh components with a vibrating sieve, and pack them into bags for later use.

[0055] Step 2: Synthesis of Acrylate Compatibilizer

[0056] First, methyl methacrylate (MMA), butyl acrylate (BA), glycidyl methacrylate (GMA) and vinyl acetate (VAc) were mixed. Under the condition of adding 0.5% (mass ratio) of hydroquinone, distill under reduced pressure, remove the polymerization inhibitor, and store at low temperature in the dark; silane coupling agents KH-550 and KH-570 are distilled under reduced pressure, and put them in a refrigerator for sealed storage spare. Add 800 mL of distilled water to a 2000 mL three-necked flask, put 25 g of sodium p-dodecylbenzenesulfonate, 15 g of polyvinyl alcohol 1788, 10 g of calcium stearate and 10 g of magnesium...

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Abstract

The invention relates to a preparation method and application of an acrylate wood-plastic composite compatibilization modifier. According to the method and the application, alkene monomers of polyacrylate, vinyl acetate, maleic anhydride or the like are subjected to free radical polymerization under the action of a persulfate or azoamidine initiator by using an emulsion polymerization method so as to obtain an acrylate copolymer emulsion, an organosilane coupling agent, a titanate coupling agent, a lubricant, an anti-aging agent and the like are compounded in the emulsion so as to obtain the wood-plastic composite compatibilization modifier, and a wood-plastic composite material is prepared through uniformly mixing the emulsion with wood flour or plant stalk powder, drying a mixture after full infiltration, mixing the mixture with plastics, such as polyethylene, polypropylene, polyvinyl chloride or polystyrene, and carrying out blending and extruding or compression molding. The usage amount of the composite compatibilization modifier is small, the infiltration with the wood flour is uniform, and the matrix compatibility is high; the prepared composite material is smooth and beautiful in surface and strong in internal interface interphase toughness; and the prepared wood-plastic composite material has the advantages of low cost, high aging resistance and high impact resistance and tensile strength.

Description

[0001] The invention belongs to the technical field of wood-plastic composite material preparation. Background technique [0002] Introduction to Wood Plastic Composites [0003] Wood-plastic composite materials are based on primary biomass materials such as wood chips, bamboo chips, wheat straw, rice bran, and straw, and use the principles of polymer interface chemistry and the characteristics of plastic filling and modification to mix a certain proportion of plastic base materials. The basic material that is processed and formed after special processing. Wood-plastic composite material combines the advantages of wood and plastic, has the high strength and high elasticity of wood fiber or plant fiber, and has the advantages of high toughness and fatigue resistance of polymer matrix, so it has excellent comprehensive performance. It is suitable for The range can cover almost all the current application areas of logs, plastics, plastic steel, aluminum alloys and other similar ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L27/06C08L25/06C08L97/02C08L33/12C08F220/14C08F220/18C08F220/32C08F218/08C08F2/26
Inventor 赵剑英董云会高巧春
Owner SHANDONG UNIV OF TECH
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