Method for preparing coconut shell and thermoplastic plastic composite material

A technology of thermoplastics and composite materials, applied in the field of preparation of coconut shells and thermoplastics, to achieve good processing performance, solve utilization problems, and increase added value

Inactive Publication Date: 2008-05-28
GUANGZHOU SCUT BESTRY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method uses coir and thermoplastic resins (such as PVC, PP, PE, etc.) as raw materials to solve the compatibility problem between coconut fiber and thermoplastics. Facilities for manufacturing tourist attractions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The first step is to use HT-300 German-style wood flour machine to crush the coconut shell into 30-60 mesh coconut shell powder, and then dry it under hot air at 90°C for 8 hours to make the water content ≤ 3%, and obtain dried coconut shell Clothing powder. At the same time, the thermoplastic resin HDPE and the compatibilizer maleic anhydride grafted polyethylene were dried at 70° C. for 3 hours.

[0022] In the second step, dry coconut powder is mixed with coupling agent solution (silane coupling agent KH-550: weight ratio of absolute ethanol = 1: 2 is prepared by diluting) in a high-temperature mixer, and spray while mixing The silane coupling agent KH-550 that has been diluted with absolute ethanol, the amount of coupling agent solution is 2% of the weight of coconut coating powder, the temperature is 100 ° C, and the mixing time is 20 minutes, so that the coupling agent is evenly coated with coconut coating powder, Modified coconut powder is obtained to improve it...

Embodiment 2

[0027] The first step is to use HT-300 German-style wood flour machine to crush the coconut coat into 80-mesh coconut coat powder, and then dry it under hot air at 90°C for 10 hours to make the water content ≤ 3% to obtain dried coconut coat powder . Simultaneously, the thermoplastic resin PVC was dried at 100° C. for 1 hour.

[0028] In the second step, the dry coconut powder is mixed with the coupling agent solution (diluted and prepared at a weight ratio of titanate coupling agent NDZ311: dehydrated alcohol = 1: 4) in a high-temperature mixer, and mix while mixing Spray titanate coupling agent NDZ311 that has been diluted with absolute ethanol, the amount of coupling agent solution is 1% of the weight of coconut coating powder, the temperature is 100°C, and the mixing time is 15 minutes, so that the coupling agent evenly coats coconut coating powder , to obtain modified coconut coating powder.

[0029] The third step, in parts by weight, with 35 parts of modified coconut ...

Embodiment 3

[0033] The first step is to use HT-700 German wood flour machine to crush the coconut coat into 80-mesh coconut coat powder, and then dry it under hot air at 90°C for 6 hours to make the water content ≤ 3% to obtain dried coconut coat powder . Simultaneously, the thermoplastic resin PVC was dried at 80° C. for 2 hours.

[0034] In the second step, the dried coir powder is mixed with the coupling agent solution (aluminum zirconate coupling agent: the weight ratio of absolute ethanol=1:3 is prepared by diluting) in a high-temperature mixer, and the mixture is mixed. Spray the aluminum zirconate coupling agent that has been diluted with absolute ethanol, the amount of the coupling agent solution is 1.5% of the weight of the coconut coating powder, the temperature is 100°C, and the mixing time is 15 minutes, so that the coupling agent evenly coats the coconut coating powder , to obtain modified coconut coating powder.

[0035] The third step, in parts by weight, with 50 parts of...

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Abstract

The invention discloses a process for preparing composite materials of coir and thermo-plastical plastic. The process enables coir to be crushed into 30-120-item coir powder of which the moisture content is equal to or less than 3% by drying. Coupling agent solution is sprayed to the coir powder at the temperature of 80 DEG C to 110 DEG C, then modified coir powder is produced and is homogenously mixed with thermo-plastical plastic resin, compatilizer, lubricant, stabilizer, stuffing material, flame retardant and the like, and then coir-plastic mixture is achieved and added to an extrusion machine to be squeezed out, consequently the composite materials of coir and plastic are achieved. The invention resolves the problems of the compatibility of the coir fiber and the thermo-plastical plastic and the treatment technology of the surface of the raw materials, thereby realizing the synthetic utilization of the coconut fruit and substitution for lumber which is lack in resource, increasing the added value of the coconut fruit, and solving the problem of the utilization of the coir waste. The composite materials prepared by the invention have the advantages of the combination of lumber and plastic, and the composite materials not only have graceful appearance, but also are capable of being antiseptic, moisture proof, borer proof and fire resistant.

Description

technical field [0001] The present invention relates to the technical field of natural plant fiber composite materials and plastic-wood composite materials, and specifically refers to a kind of tropical fruit—the outer coat of coconut is crushed and modified, and then compounded with thermoplastic plastics to form a coconut coat and thermoplastic (coconut-plastic composite) material) method of preparation. Background technique [0002] Coconut coat refers to the fruit of the coconut tree - the mesocarp of the coconut, that is, the soft and fibrous material between the exocarp and the endocarp (coconut shell) of the coconut. It covers the entire coconut shell and accounts for 50% of the entire coconut volume. ~60%, composed of hard fibers and parenchyma cells, brown and elastic, and its main components are cellulose, hemicellulose, lignin and gum. Coconuts are planted in Hainan of my country, Leizhou Peninsula of Guangdong, Beihai of Guangxi, Xishuangbanna and Hekou of Yunna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L27/06C08L23/12C08L23/06C08K5/54B29C47/40C08L51/06C08K3/00C08K5/06
Inventor 马铁军蒋迪清
Owner GUANGZHOU SCUT BESTRY TECHNOLOGY CO LTD
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