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Bamboo powder-high density polyethylene composite materials and process for preparing same

A technology of high-density polyethylene and composite materials, which is applied in the field of bamboo powder-high-density polyethylene composite materials and its preparation, can solve problems such as limited processing methods, poor material fluidity, and poor appearance performance, and achieve high added value, Excellent aging resistance and good appearance

Inactive Publication Date: 2006-09-06
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length-to-diameter ratio of bamboo fiber is too large, the material fluidity is poor when compounding, and the processing method is limited. It can only be processed by molding, and it cannot be widely used for extrusion processing. Applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The bamboo is pulverized to a particle size of 0.833mm, and spread to dry or dried so that the moisture content of the bamboo powder is less than 10% by mass fraction. In a high-speed mixer, 20 parts of bamboo powder (quality, the same below), 80 parts of high-density polyethylene resin, 1 part of oxidized polyethylene, and 0.5 part of stearic acid are kneaded. The kneading temperature is room temperature, and the kneading time is 5 minutes. The kneaded raw materials are granulated in a twin-screw extruder to obtain master batches. The masterbatch is extruded in a single-screw extruder to obtain a composite material.

Embodiment 2

[0017] The bamboo is pulverized to a particle size of 0.147 mm, and spread to dry or dried so that the moisture content of the bamboo powder is less than 10% by mass fraction. In a high-speed mixer, knead 80 parts of bamboo powder, 20 parts of high-density polyethylene resin, 5 parts of oxidized polyethylene, and 8 parts of stearic acid. The kneading temperature was room temperature, and the kneading time was 30 minutes. The kneaded raw materials are granulated in a twin-screw extruder to obtain master batches. The masterbatch is extruded in a single-screw extruder to obtain a composite material.

Embodiment 3

[0019] The bamboo is pulverized to a particle size of 0.175mm, and spread to dry or dried so that the moisture content of the bamboo powder is less than 10% by mass fraction. In a high-speed mixer, knead 50 parts of bamboo powder, 50 parts of high-density polyethylene resin, 2 parts of oxidized polyethylene, and 10 parts of stearic acid. The kneading temperature is room temperature, and the kneading time is 2 minutes. The kneaded raw materials are granulated in a twin-screw extruder to obtain master batches. The masterbatch is extruded in a single-screw extruder to obtain a composite material.

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Abstract

The invention relates to a bamboo powder - high-density polyethylene composite and its process for preparing, which consists of granulating in the twin-screw extruder after kneading the raw material components comprising bamboo powder, high-density polyvinyl resin, polyethylene oxide and geoceric acid, then obtaining the product by squeezing the master batch in the single screw extractor. The external appearance of the invented bamboo powder - high-density polyethylene composite is close to the wood, and the invented product has good fire-retardancy. By changing different dies, complex-shaped products can be prepared and is capable of boring, digging and nailing. The product of this invention is of no release of formaldehyde, of nice appearance, good handle, no warp, excellent resistance to aging, and so it has a prodigious superiority outside, for example, it can be used as marine landscape materials such as corridor, sunshade, baluster and movable dwelling.

Description

technical field [0001] The invention relates to a high-density polyethylene composite material, in particular to a bamboo powder-high-density polyethylene composite material and a preparation method thereof. Background technique [0002] The use of plant powder and plastic resin for blending and compounding is a new model for high-value comprehensive utilization of plant resources. The advantages of plastics and plant fibers are organically combined, so that the obtained materials can be surface glued, painted, drilled, planed, nailed, etc. like wood, and can be extruded and processed like thermoplastics. It combines the ease of processing of plant materials and the diversity and flexibility of plastic processing methods, and has a wide range of applications. [0003] Bamboo is an important renewable plant, which has the advantages of easy regeneration, large yield, and less damage to the environment and ecology. Bamboo and polymer resin can be combined to obtain bamboo-pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06B29B9/12B29C47/40
Inventor 庞浩廖兵陈玉放刘雪宁王东山胡美龙
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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