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Plant fiber reinforced polylactic acid composite material and preparation method thereof

A composite material and plant fiber technology, which is applied in the field of plant fiber reinforced polylactic acid composite material and its preparation, can solve the problems of high cost, limited use in large quantities, expensive polylactic acid, etc., and achieves good tensile strength and elongation at break. , the effect of good interface performance

Inactive Publication Date: 2017-10-13
苏州奥宇包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of the synthesis process of polylactic acid, the price of polylactic acid in the market is high, which limits its large-scale use in industry. Therefore, it needs to be improved. On the one hand, it can increase its strength, and on the other hand, it can also reduce costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A plant fiber reinforced polylactic acid composite material, in parts by weight, the composite material comprises the following components: 12 parts of sisal fibers, 8 parts of kapok fibers, 5 parts of flax fibers, 6 parts of kenaf fibers, and 2 parts of cotton fibers , 3 parts of palm fiber, 2 parts of bamboo fiber, 3 parts of coconut fiber, 3 parts of silica, 22 parts of polylactic acid.

[0022] Described a kind of preparation method of plant fiber reinforced polylactic acid composite material, comprises the following steps:

[0023] (1) adopt the sodium carbonate aqueous solution that massfraction is 12% to process sisal fiber, kapok fiber, flax fiber, kenaf fiber, cotton fiber, palm fiber, bamboo fiber and coir fiber, react for 1 hour;

[0024] (2) placing the fiber treated in step (1) in an oven to dry, and pulverizing the fiber, then placing it in a vacuum drying oven to dry for 1 hour to obtain fiber powder, wherein the vacuum degree is -0.2Pa, and the temperatu...

Embodiment 2

[0029] A plant fiber reinforced polylactic acid composite material, in parts by weight, the composite material comprises the following components: 20 parts of sisal fibers, 12 parts of kapok fibers, 15 parts of flax fibers, 13 parts of kenaf fibers, and 5 parts of cotton fibers , 7 parts of palm fiber, 8 parts of bamboo fiber, 6 parts of coconut fiber, 9 parts of silica, and 40 parts of polylactic acid.

[0030] Described a kind of preparation method of plant fiber reinforced polylactic acid composite material, comprises the following steps:

[0031] (1) adopt the sodium carbonate aqueous solution that massfraction is 20% to process sisal fiber, kapok fiber, flax fiber, kenaf fiber, cotton fiber, palm fiber, bamboo fiber and coir fiber, react for 2 hours;

[0032] (2) placing the fiber treated in step (1) in an oven to dry, and pulverizing the fiber, then placing it in a vacuum drying oven to dry for 2 hours to obtain fiber powder, wherein the vacuum degree is -0.2Pa, and the ...

Embodiment 3

[0037] A plant fiber reinforced polylactic acid composite material, in parts by weight, the composite material comprises the following components: 26 parts of sisal fibers, 16 parts of kapok fibers, 19 parts of flax fibers, 18 parts of kenaf fibers, and 7 parts of cotton fibers , 11 parts of palm fiber, 13 parts of bamboo fiber, 9 parts of coconut fiber, 14 parts of silica, and 45 parts of polylactic acid.

[0038] Described a kind of preparation method of plant fiber reinforced polylactic acid composite material, comprises the following steps:

[0039] (1) adopt the sodium carbonate aqueous solution that mass fraction is 25% to process sisal fiber, kapok fiber, flax fiber, kenaf fiber, cotton fiber, palm fiber, bamboo fiber and coir fiber, react for 2.5 hours;

[0040] (2) placing the fiber treated in step (1) in an oven to dry, and pulverizing the fiber, then placing it in a vacuum drying oven to dry for 3 hours to obtain fiber powder, wherein the vacuum degree is -0.1Pa, an...

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PUM

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Abstract

The invention discloses a plant fiber reinforced polylactic acid composite material and a preparation method thereof. The plant fiber reinforced polylactic acid composite material comprises the following components in parts by weight: 12 to 26 parts of sisal fiber, 8 to 16 parts of kapok fiber, 5 to 19 parts of linen fiber, 6 to 18 parts of kenaf fiber, 2 to 7 parts of cotton fiber, 3 to 11 parts of palm fiber, 2 to 13 parts of bamboo fiber, 3 to 9 parts of coconut fiber, 3 to 14 parts of silicon dioxide and 22 to 45 parts of polylactic acid. The plant fiber reinforced polylactic acid composite material has the following advantages: (1) the interfacial property of the plant fiber and the polylactic acid of the plant fiber reinforced biodegradable composite material is high; (2) the composite material has high tensile strength and elongation at break.

Description

Technical field [0001] The invention belongs to the field of packaging materials and relates to a polylactic acid packaging material, specifically a plant fiber reinforced polylactic acid composite material and a preparation method thereof. Background technique [0002] Polylactic acid has good biocompatibility, biodegradability, absorbability and plasticity. Today, when developing new polymer materials has become a hot topic, polylactic acid has broad application prospects. [0003] Polylactic acid can be made into fibrous suture materials. This kind of suture has a certain mechanical strength, which can not only meet the strength requirements of the sutures, but also be slowly decomposed and absorbed by the body as the wound heals. No need to remove the sutures. It is especially suitable for the deep tissue of the human body. The wound is sutured. At present, the main obstacles to the commercial production of polylactic acid are the complex production process, long proces...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L1/02C08L97/02C08K3/36C08G63/08C08G63/85
CPCC08L67/04C08G63/08C08G63/823C08L2201/06C08L2205/025C08L2205/035C08L2205/16C08L1/02C08L97/02C08K3/36
Inventor 顾建芳
Owner 苏州奥宇包装科技有限公司
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