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Technical method for preparing special active plasticized granule for wood-plastic composite material utilizing agricultural stalk

A wood-plastic composite material and process method technology, applied in the field of active plasticized granules, can solve the problems of large floor space, poor product quality, backward technology, etc., and achieve small floor space, short production cycle, and excellent product performance. Effect

Inactive Publication Date: 2006-10-25
安徽翔方科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional plant fiber plasticization has disadvantages such as long cycle, backward technology, large floor area, high cost, and poor product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The process for preparing active plasticized pellets for wood-plastic composite materials from agricultural straw includes the following steps

[0023] (1), plasticizing process

[0024] A. Cut the wheat straw into sections and grind it to 20-40 mesh coarse particles,

[0025] B. Send 100 parts of the above-mentioned particles into the mixer, and add 5 parts of sodium hydroxide, 5 parts of urea and 7 parts of melamine aqueous solution with a concentration of 1.5-3%, mix and stir evenly;

[0026] C. Send the uniformly stirred raw materials into the 25m by belt conveyor 3 General paper fiber cooking equipment, temperature 90-105 ℃, cooking and plasticizing time 3-4 hours, to obtain fluffy active plasticized materials;

[0027] D, after cooling and natural drying, a fluffy active plasticized material with a moisture content of 15-24% is obtained;

[0028] (2), granulation process

[0029] A. Take 85 parts of the above-mentioned fluffy active plasticizing material with ...

Embodiment 2

[0032] The process for preparing active plasticized pellets for wood-plastic composite materials from agricultural straw includes the following steps

[0033] (1), plasticizing process

[0034] A. Cut the straw into sections and grind it to 20-40 mesh coarse particles,

[0035] B. Send 100 parts of the above-mentioned granules into the mixer, and add 3 parts of sodium hydroxide, 3 parts of urea and 1 part of melamine with a concentration of 1.5-3%, and mix and stir evenly;

[0036] C. Send the uniformly stirred raw materials into the 25m by belt conveyor 3 General paper fiber cooking equipment, temperature 90-105 ℃, cooking and plasticizing time 3-4 hours, to obtain fluffy active plasticized materials;

[0037] D, after cooling and natural drying, a fluffy active plasticized material with a moisture content of 15-24% is obtained;

[0038] (2), granulation process

[0039] A. Take 70 parts of the above-mentioned fluffy active plasticizing material with a water content of 15...

Embodiment 3

[0042] The process for preparing active plasticized pellets for wood-plastic composite materials from agricultural straw includes the following steps

[0043] (1), plasticizing process

[0044] A. Grind sawdust to 20-40 mesh coarse particles,

[0045] B. Send 100 parts of the above-mentioned particles into the mixer, and add 4 parts of sodium hydroxide, 4 parts of urea and 4 parts of melamine with a concentration of 1.5-3%, and mix and stir evenly;

[0046] C. Send the uniformly stirred raw materials into the 25m by belt conveyor 3 General paper fiber cooking equipment, temperature 90-105 ℃, cooking and plasticizing time 3-4 hours, to obtain fluffy active plasticized materials;

[0047] D, after cooling and natural drying, a fluffy active plasticized material with a moisture content of 15-24% is obtained;

[0048] (2), granulation process

[0049] A. Take 78 parts of the above-mentioned fluffy active plasticizing material with a water content of 15-24%, and add 8 parts of ...

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Abstract

The invention is to produce the wood-plastic composite using the straw. The straw is plasticized after cutting and grinding to get the puffy plastic material; the material is prilled in the parallel twin-screw pelletizer after surface treatment and the formulation design. The invention can improve the efficient of 40 times by using the alkaline process and the special formula design.

Description

technical field [0001] The invention relates to a process method for preparing special active plasticized granular materials for wood-plastic composite materials from agricultural straws. Background technique [0002] Agricultural straw is the main raw material of plant fiber-based wood-plastic composites (accounting for 50-90% of the total). Traditional wood-plastic composites mainly use plant fiber powder as a filling material, and it is difficult to achieve a real "polymer composite". Chemical compounding", thus limiting the performance and scope of use of the product. [0003] Plant fiber is actually a natural polymer composite material mainly composed of three types of natural polymer materials: cellulose, hemicellulose, and lignin. This macromolecular life complex substance is a complex system. The surface of the plant fiber has a polyhydroxy structure, which is a polar hydrophilic substance, while the general synthetic polymer (plastic) is a non-polar lipophilic sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/00B29K23/00B29K25/00B29K27/06B29K105/06
Inventor 桂先伦刘伯元朱向前吕锡庆韦光耀俞祝生
Owner 安徽翔方科技开发有限公司
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