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Bamboo powder-polyvinyl chloride composite materials and process for preparing same

A composite material and polyvinyl chloride technology, applied in the field of bamboo powder-polyvinyl chloride composite material and its preparation, can solve the problems of limited processing method, poor material flowability, poor apparent performance, etc., and achieve high added value and excellent resistance. Excellent flammability and aging resistance

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, mix 20 parts of bamboo powder (mass, the same below), 80 parts of polyvinyl chloride resin, 2 parts of tribasic lead sulfate, 1 part of dibasic lead phosphite, 2 parts of calcium stearate, hard 2 parts of zinc ester and 1 part of titanate coupling agent are kneaded. The kneading temperature is room temperature, and the kneading time is 5 minutes. The kneaded raw materials were pelletized in a twin-screw extruder. Get masterbatch. 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, 50 parts of bamboo powder, 50 parts of polyvinyl chloride resin, 1 part of tribasic lead sulfate, 5 parts of dibasic lead phosphite, 10 parts of calcium stearate, 5 parts of zinc stearate, 5 parts of titanate coupling agent were kneaded. 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, 80 parts of bamboo powder, 20 parts of polyvinyl chloride resin, 5 parts of tribasic lead sulfate, 1 part of dibasic lead phosphite, 0.5 parts of calcium stearate, 0.5 parts of zinc stearate, 0.5 part of titanate coupling agent was kneaded. 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-polyvinyl chloride composite and its process for preparing, which consists of granulating in the twin-screw extruder after kneading the raw material components comprising bamboo powder, polykoroseal, tribasic lead sulphate, dibasic lead phosphate, calcium stearate, zinc stearate and titanate coupling agent, then obtaining the product by squeezing the master batch in the single screw extractor. The external appearance of the invented bamboo powder-polyvinyl chloride 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, is 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 polyvinyl chloride composite material, in particular to a bamboo powder-polyvinyl chloride 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-plastic composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L27/06C08K5/56B29B9/12B29C47/38C08K5/10C08K5/52B29C48/395
CPCB29C48/40
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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