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Method for modifying bamboo powder with maleic anhydride and maleic acid grafted polyethylene wax and application

A technology of grafting polyethylene and maleic anhydride, which is applied in the field of bamboo powder processing, can solve the problems of not being able to improve the comprehensive mechanical properties of hygroscopicity, modification, etc., and achieve a technology that is suitable for large-scale production, improves bonding strength, and is simple and feasible. Effect

Active Publication Date: 2018-12-28
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 for modifying bamboo powder with maleic anhydride and maleic acid grafted polyethylene wax and application
  • Method for modifying bamboo powder with maleic anhydride and maleic acid grafted polyethylene wax and application
  • Method for modifying bamboo powder with maleic anhydride and maleic acid grafted polyethylene wax and application

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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 particularly provides a method for modifying bamboo powder with maleic anhydride and maleic acid grafted polyethylene waxand application. The method for modifying the bamboo powder with maleic anhydride and the maleic acid grafted polyethylene wax at least comprises the following steps that the bamboo powder, the maleicacid grafted polyethylene wax, maleic anhydride and a catalyst are placed in a high-speed mixer, mixing treatmentt is sequentially carried out according to the mixing speed of 700 r / min to 800 r / minand 1,500 r / min to 2000 r / min at the temperature of 100 DEG C to 120 DEG C, and the modified bamboo powder is obtained. According to the method, hydroxide radicals on the surface of the bamboo powderand inside the bamboo powder can form chemical keys, the polarity and hygroscopicity of the bamboo powder are reduced, and therefore the compatibility of the bamboo powder and a plastic substrate canbe improved. When the bamboo powder and plastic are processed into a bamboo-plastic composite, the composite has good mechanical performance. In addition, the method for modifying the bamboo powder issimple, feasible and 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 Applications(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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