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Method for preparing wood-plastic material by coating polyacrylate with wood powder

A technology for polyacrylate and wood-plastic materials is applied in the field of preparation of wood-plastic materials, which can solve the problems of difficult cost reduction and complicated process, and achieve the effects of low cost, simple preparation method and beautiful wooden appearance.

Inactive Publication Date: 2015-06-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this preparation method also obtains wood-plastic materials, there are deficiencies. First, the preparation process is complicated, especially the preparation of the compatibilizer. Restricted by many conditions such as preservation, at the same time, it is necessary to prepare the compatibilizer first, and then use it to modify the rice husk powder to obtain the modified rice husk powder; secondly, multiple processes need to be carried out in a vacuum implementation, making it difficult to reduce costs

Method used

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  • Method for preparing wood-plastic material by coating polyacrylate with wood powder
  • Method for preparing wood-plastic material by coating polyacrylate with wood powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The concrete steps of preparation are:

[0026] Step 1: First, mix butyl acrylate, acrylic acid and sodium dodecylsulfonate in a weight ratio of 13:1.5:3 to obtain a mixed solution. Then the mixed solution and 6.5wt% azobisisobutyronitrile methyl methacrylate solution were added dropwise to the 0.04wt% 100-mesh wood flour aqueous solution at 75°C under stirring within 26 minutes at the same time, and then the insulation polymerization was continued. Reacted for 3h to obtain a reaction solution.

[0027] In step 2, the reaction solution is first subjected to solid-liquid separation, washing and drying in sequence; wherein, the solid-liquid separation process is filtration separation, the washing process is to use ethanol to clean the separated solid matter, and the drying process is to wash the cleaned The solid matter is dried at 60° C. to obtain a modified wood powder coated with polyacrylate. After the modified wood flour was dried at 100°C for 5 hours, the modified...

Embodiment 2

[0029] The concrete steps of preparation are:

[0030] In step 1, butyl acrylate, acrylic acid and sodium dodecylsulfonate are mixed in a weight ratio of 13:1.8:2.8 to obtain a mixed solution. Then the mixed solution and 6.8wt% azobisisobutyronitrile methyl methacrylate solution were added dropwise to the 0.05wt% 95-mesh wood flour aqueous solution at 78°C under stirring within 27 minutes at the same time, and then the insulation polymerization was continued. After 3.5 hours of reaction, the reaction solution was obtained.

[0031] In step 2, the reaction solution is first subjected to solid-liquid separation, washing and drying in sequence; wherein, the solid-liquid separation process is filtration separation, the washing process is to use ethanol to clean the separated solid matter, and the drying process is to wash the cleaned The solid matter is dried at 65° C. to obtain a modified wood powder coated with polyacrylate. After the modified wood flour was dried at 103°C for...

Embodiment 3

[0033] The concrete steps of preparation are:

[0034] Step 1: First, mix butyl acrylate, acrylic acid and sodium dodecylsulfonate according to the weight ratio of 13:2:2.5 to obtain a mixed solution. Then the mixed solution and 7wt% azobisisobutyronitrile methyl methacrylate solution were added dropwise to the 0.06wt% 90-mesh wood flour aqueous solution at 80°C under stirring within 28 minutes, and then the insulation polymerization was continued. 4h, the reaction solution was obtained.

[0035] In step 2, the reaction solution is first subjected to solid-liquid separation, washing and drying in sequence; wherein, the solid-liquid separation process is filtration separation, the washing process is to use ethanol to clean the separated solid matter, and the drying process is to wash the cleaned The solid matter is dried at 70° C. to obtain a modified wood powder coated with polyacrylate. After the modified wood flour was dried at 105°C for 5 hours, the modified wood flour an...

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Abstract

The invention discloses a method for preparing a wood-plastic material by coating wood powder with polyacrylate. The method comprises the following steps: mixing butyl acrylate, acrylic acid and sodium dodecyl sulfate in a weight ratio of 13:(1.5-2.5):(2-3); respectively dropwise adding the mixed solution and 6.5-7.5wt% of azodiisobutyronitrile methyl methacrylate solution into 0.04-0.08wt% of 80-100-mesh wood powder aqueous solution which is at 75-85 DEG C under a stirring state, and continuously insulating to perform a polymerization reaction for at least 3 hours to obtain a reacting liquid; then, sequentially performing solid-liquid separation, washing and drying treatments on the reacting liquid to obtain modified wood powder coated with polyacrylate; mixing the modified wood powder and polyacrylate particles in a weight ratio of (35-45):(55-65), and mixing at 170-180 DEG C for 5-10 minutes to prepare the wood-plastic material by coating wood powder with polyacrylate. The method is simple, convenient and feasible, and is low in cost, and the product can be easily and widely applied to construction materials, outdoor corridors, indoor and outdoor floor and furniture and other fields.

Description

technical field [0001] The invention relates to a preparation method of a wood-plastic material, in particular to a preparation method of a wood-plastic material coated with polyacrylate wood powder. Background technique [0002] Due to the lack of resources and serious environmental pollution in the current society, the use and waste of wood products are strictly restricted by various countries. At the same time, the recycling of fiber materials such as waste wood chips, straw and rice husk powder has also been highly valued and developed to a certain extent. For example, an acrylic acid ester disclosed in Chinese invention patent application CN 103146049 A on June 12, 2013 Preparation method and application of wood-plastic composite compatibilizing modifier. This patent application records a specific application—the method of preparing wood-plastic materials: firstly crush rice husks and screen to obtain 40-80 mesh rice husk powders, then synthesize acrylate compatibilize...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/00C08F289/00C08F220/18C08F220/06C08F220/14
CPCC08F289/00C08L23/12C08L51/00C08F220/1804
Inventor 叶显柱王化田兴友郑康周海峰田恐虎苏政丁欣
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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