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Method and application of maleic anhydride and maleic acid grafted polyethylene wax modified bamboo powder

A technology for grafting polyethylene and maleic anhydride, which is applied in the field of bamboo powder processing, can solve the problems of modification, cannot improve the comprehensive mechanical properties of hygroscopicity, etc., and achieves improved bonding strength, less water vapor and volatile gas generation. , the effect of good interface compatibility

Active Publication Date: 2022-01-04
深圳市中京科林环保塑料技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the current modification process of bamboo powder such as the inability to modify its interior, the inability to improve its hygroscopicity and the comprehensive mechanical properties after mixing with the plastic matrix, the invention provides a kind of maleic anhydride grafted with maleic anhydride Method for modifying bamboo powder with polyethylene wax

Method used

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  • Method and application of maleic anhydride and maleic acid grafted polyethylene wax modified bamboo powder
  • Method and application of maleic anhydride and maleic acid grafted polyethylene wax modified bamboo powder

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Embodiment 1

[0054] A method for modifying bamboo powder and maleic anhydride and maleic anhydride grafted polyethylene wax modified bamboo powder, wherein the raw material of modified bamboo powder is the following raw materials in parts by weight:

[0055] 60 parts of moso bamboo powder, passed through a 100-mesh sieve;

[0056] 30 parts of maleic anhydride grafted polyethylene waxes, the weight-average molecular weight is 1500;

[0057] 8.5 parts of maleic anhydride;

[0058] Zinc stearate 1.5 parts.

[0059] The modification method of described bamboo powder is as follows:

[0060] Put the moso bamboo powder, maleic anhydride grafted polyethylene wax, maleic anhydride and zinc stearate described in Example 1 in a high mixer, heat to 110°C, and stir for 4 minutes at a speed of 750r / min , then stirred at a speed of 1750r / min for 15min, and then cooled to below 40°C to obtain modified bamboo powder.

Embodiment 2

[0062] A method for modifying bamboo powder and maleic anhydride and maleic anhydride grafted polyethylene wax modified bamboo powder, wherein the raw material of modified bamboo powder is the following raw materials in parts by weight:

[0063] 60 parts of moso bamboo powder, passed through a 200-mesh sieve;

[0064] 30 parts of maleic anhydride grafted polyethylene waxes, the weight-average molecular weight is 3000;

[0065] 8.5 parts of maleic anhydride;

[0066] 1.5 parts of magnesium stearate.

[0067] The modification method of described bamboo powder is as follows:

[0068] Put the moso bamboo powder, maleic anhydride grafted polyethylene wax, maleic anhydride and magnesium stearate described in Example 2 in a high mixer, heat to 110°C, and stir for 4 minutes at a speed of 750r / min , then stirred at a speed of 1750r / min for 15min, and then cooled to below 40°C to obtain modified bamboo powder.

Embodiment 3

[0070] A method for modifying bamboo powder and maleic anhydride and maleic anhydride grafted polyethylene wax modified bamboo powder, wherein the raw material of modified bamboo powder is the following raw materials in parts by weight:

[0071] 60 parts of moso bamboo powder, passed through a 300-mesh sieve;

[0072] 30 parts of maleic anhydride grafted polyethylene waxes, the weight-average molecular weight is 5000;

[0073] 8.5 parts of maleic anhydride;

[0074] Rare earth catalyst 1.5 parts.

[0075] The modification method of described bamboo powder is as follows:

[0076] Put the moso bamboo powder, maleic anhydride grafted polyethylene wax, maleic anhydride and rare earth catalyst described in Example 3 in a high mixer, heat to 110°C, first stir for 4min at a speed of 750r / min with a rotating speed, and then The modified bamboo powder can be obtained by stirring at a speed of 1750r / min for 15min, and then cooling to below 40°C.

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Abstract

The invention relates to the technical field of bamboo powder processing, and specifically provides a method and application of maleic anhydride and maleic anhydride-grafted polyethylene wax modified bamboo powder. The method of maleic anhydride and maleic anhydride grafted polyethylene wax modified bamboo powder at least comprises the following steps: bamboo powder, maleic anhydride grafted polyethylene wax, maleic anhydride and catalyst are placed in a high mixer, Under the condition that the temperature is 100-120 DEG C, the mixing treatment is carried out successively according to the mixing speeds of 700-800r / min and 1500-2000r / min, so as to obtain the modified bamboo powder. The method of the present invention can make the hydroxyl groups on the surface and inside of the bamboo powder form chemical bonds, reduce the polarity and hygroscopicity of the bamboo powder, thereby helping to improve the compatibility between the bamboo powder and the plastic matrix, and process it with plastics into a bamboo-plastic composite material , the composite material has good mechanical properties. In addition, the process of the modification method is simple and feasible, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of bamboo powder processing, and in particular relates to a method and application of maleic anhydride and maleic anhydride grafted polyethylene wax to modify bamboo powder. Background technique [0002] Bamboo is a perennial plant of the Poaceae Bamboo subfamily, which has the characteristics of short growth cycle and large output. Its stem is woody and its main component is bamboo fiber. Bamboo fiber has high hardness, high strength and good toughness, so it is expected to become an ideal fiber reinforcement material. Many new composite materials can be obtained by hot-compression compounding and melt extrusion with polymer materials such as resins. These new composite materials have many advantages of bamboo fiber and polymer materials, such as isotropy, water resistance, and insect resistance. Moth-resistant, anti-corrosion, and can be recycled, which is conducive to environmental protection, so it can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L51/06C08K5/098
CPCC08L97/02C08L51/06C08K5/098
Inventor 孔力陈永龙
Owner 深圳市中京科林环保塑料技术有限公司
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