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Weather-resistant bamboo-plastic composite and preparation method thereof

A composite material and weather resistance technology, applied in the field of comprehensive utilization of agricultural and forestry by-products, can solve the problems of poor temperature resistance, poor product performance and poor fluidity of bamboo powder, and achieve increased added value, improved weather resistance and strength, and reduced white pollution. Effect

Inactive Publication Date: 2013-07-17
INT CENT FOR BAMBOO & RATTAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor compatibility of bamboo powder and resin, the poor temperature resistance of bamboo powder, and the poor fluidity of bamboo powder in the screw rod, the content of bamboo powder in the final product is low, generally below 50%, and the performance of the product is relatively poor.

Method used

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  • Weather-resistant bamboo-plastic composite and preparation method thereof
  • Weather-resistant bamboo-plastic composite and preparation method thereof
  • Weather-resistant bamboo-plastic composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A weather-resistant bamboo-plastic composite material is prepared from the following raw materials in parts by weight:

[0022]

[0023] The nano-titanium dioxide is anatase type nano-titanium dioxide with a particle size range of 5-50 nm; the particle size range of the nano-zinc oxide is 10-80 nm.

[0024] The preparation method of the weather-resistant bamboo-plastic composite material is:

[0025] 1) Ultrasonic treatment after mixing nano titanium dioxide and nano zinc oxide, the power of ultrasonic treatment is 300W, and the ultrasonic time is 300 seconds, so that nano titanium dioxide and nano zinc oxide are fully dispersed and mixed evenly;

[0026] 2) Passing the bamboo powder through a 100-mesh sieve, stirring at 90° C. until the water content is 3%, then adding titanate, and continuing to stir for 10 minutes to obtain modified bamboo powder;

[0027] 3) Mix the nano-titanium dioxide and nano-zinc oxide mixture obtained in step 1), the modified bamboo powder...

Embodiment 2

[0030] A weather-resistant bamboo-plastic composite material is prepared from the following raw materials in parts by weight:

[0031]

[0032] The preparation method of the weather-resistant bamboo-plastic composite material is:

[0033] 1) Ultrasonic treatment after mixing nano titanium dioxide and nano zinc oxide, the power of ultrasonic treatment is 200W, and the ultrasonic time is 500 seconds, so that nano titanium dioxide and nano zinc oxide are fully dispersed and mixed evenly;

[0034] 2) Passing the bamboo powder through an 80-mesh sieve, stirring at 100° C. until the water content is 2%, then adding titanate, and continuing to stir for 15 minutes to obtain modified bamboo powder;

[0035] 3) Mix the nano-titanium dioxide and nano-zinc oxide mixture obtained in step 1), the modified bamboo powder obtained in step 2), pentaerythritol ester, dilauryl thiodipropionate, high-density polyethylene, azodicarbonamide, Polyethylene wax and zinc stearate were mixed together...

Embodiment 3

[0038] A weather-resistant bamboo-plastic composite material is prepared from the following raw materials in parts by weight:

[0039]

[0040] The nano-titanium dioxide is anatase type nano-titanium dioxide with a particle size range of 5-50 nm; the particle size range of the nano-zinc oxide is 10-80 nm.

[0041] The preparation method of the weather-resistant bamboo-plastic composite material is:

[0042] 1) Ultrasonic treatment after mixing nano titanium dioxide and nano zinc oxide, the power of ultrasonic treatment is 500W, and the ultrasonic time is 200 seconds, so that nano titanium dioxide and nano zinc oxide are fully dispersed and mixed evenly;

[0043] 2) Passing the bamboo powder through a 120-mesh sieve, stirring at 80° C. until the water content is 5%, then adding titanate, and continuing to stir for 20 minutes to obtain modified bamboo powder;

[0044] 3) Mix the nano-titanium dioxide and nano-zinc oxide mixture obtained in step 1), the modified bamboo powder...

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Abstract

The invention discloses weather-resistant bamboo-plastic composite and a preparation method thereof. Bamboo powder is used as main raw material. Nano titanium dioxide and nano zinc oxide are used as inorganic nano particles. Tetra-pentaerythritol ester and dilauryl thiodipropionate are used as organic antioxidant. Tetrabutyl titanate is used as coupling agent. Azobisformamide is used as foaming agent. Polyethylene wax and zinc stearate are used as lubricant. The bamboo-plastic composite is prepared by a dual-screw extrusion process after high-density polyethylene composition to improve weather resistance, strength, toughness and hydrophobic performance of bamboo-plastic outdoor decorating materials. Compared with the existing bamboo-plastic composites, the antioxidation performance and anti-light-degradation performance of the bamboo-plastic composite is increased by more than 30%. The bamboo-plastic composite can completely replace wood products at outdoor decorating materials, and accordingly wood can be saved, and benefits are brought to forest resource protection.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of agricultural and forestry by-products, and particularly relates to a weather-resistant bamboo-plastic composite material and a preparation method thereof. Background technique [0002] China is the country with the most abundant bamboo resources in the world. The area of ​​bamboo forests, the output of bamboo materials, and the scale and level of industrial utilization are all ranked first in the world. While using a large number of bamboo materials, it also produces a large number of small-diameter bamboo, clustered bamboo or bamboo processing. Residues and other wastes of bamboo industrial products are generally burned as wastes at present, which is a waste of resources and seriously pollutes the environment. [0003] Because small-diameter bamboo, clumping bamboo, bamboo chips, waste bamboo, etc. are rich in cellulose (the cellulose content is more than 40%), they have cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08K13/02C08K3/22C08K5/103C08K5/372C08K5/098C08J9/10B29C47/92B29C48/92
CPCB29C48/0022B29C48/04B29C48/40B29C48/875B29C48/911B29C48/92
Inventor 余雁费本华熊汉国费鹏蔡杰谭军
Owner INT CENT FOR BAMBOO & RATTAN