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High-content-rice husk fiber-filled PBAT-based composite material and preparation method and application thereof

A composite material, high-content technology, applied in the field of degradable materials, can solve the problems of high production cost, insufficient tensile strength, flexural modulus rigidity index, high price, etc., and achieve low production cost, low price and easy control Effect

Inactive Publication Date: 2019-07-05
XIAMEN HUSKS NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pure PBAT has a glass transition temperature of -30°C and has good impact resistance at room temperature, but its rigidity indicators such as tensile strength and flexural modulus are insufficient, and its production cost is high and expensive

Method used

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  • High-content-rice husk fiber-filled PBAT-based composite material and preparation method and application thereof
  • High-content-rice husk fiber-filled PBAT-based composite material and preparation method and application thereof
  • High-content-rice husk fiber-filled PBAT-based composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A PBAT-based composite material filled with high rice husk fiber content, comprising the following parts by weight: 100 parts of rice husk powder, 90 parts of PBAT, 10 parts of PLA, 2 parts of hyperdispersant CH-1A, 5 parts of PBS-g-MAH, hard 1 part of calcium stearate, 2 parts of stearic acid.

[0027] Its preparation method comprises the following steps:

[0028] A. Put 80-mesh rice husk powder with a fiber aspect ratio of 10 in a drying oven at 70°C for 12 hours;

[0029] B. Put the dried rice husk powder in step A into a high-speed mixer, add hyperdispersant, and mix and stir at 110°C for 8 minutes; then add PLA, PBS-g-MAH, continue stirring for 1 minute, and then add PBAT, Calcium stearate, stearic acid, continue to mix and stir for 1min;

[0030] C. After crushing the material mixed in step B, it is added to the twin-screw extruder. From the feed to the discharge port, the temperatures of the six heating sections are 145°C, 160°C, 170°C, and 170°C respectively. ...

Embodiment 2

[0034] A PBAT-based composite material filled with high rice husk fiber content, comprising the following parts by weight: 100 parts of rice husk powder, 80 parts of PBAT, 15 parts of PLA, 3 parts of hyperdispersant CH-2C, 13 parts of PBS-g-GMA, hard 2.5 parts of calcium stearate, 3 parts of stearic acid.

[0035] Its preparation method comprises the following steps:

[0036] A. Place the rice husk powder with an average particle size of 90 mesh and a fiber aspect ratio of 20 in an oven at 80°C for 11 hours;

[0037] B. Put the dried rice husk powder in step A into a high-speed mixer, add hyperdispersant, and mix and stir for 10 minutes at 120°C; then add PLA, PBS-g-GMA, continue stirring for 2 minutes, and then add PBAT, Calcium stearate, stearic acid, continue to mix and stir for 2 minutes;

[0038] C. After crushing the mixed material in step B, put it into the twin-screw extruder. From the feed to the discharge port, the temperatures of the six heating sections are 155°C...

Embodiment 3

[0042] A PBAT-based composite material filled with high rice husk fiber content, comprising the following parts by weight: 100 parts of rice husk powder, 70 parts of PBAT, 25 parts of PLA, 5 parts of hyperdispersant CH-6, 20 parts of PLA-g-GMA, hard 4 parts of barium stearate, 4 parts of stearic acid.

[0043] Its preparation method comprises the following steps:

[0044] A. Place the rice husk powder with an average particle size of 100 mesh and a fiber aspect ratio of 30 in a drying oven at 90°C for 10 hours;

[0045] B. Put the dried rice husk powder in step A into a high-speed mixer, add hyperdispersant, and mix and stir for 12 minutes at 130°C; then add PLA, PLA-g-GMA, continue stirring for 3 minutes, and then add PBAT, Barium stearate, stearic acid, continue to mix and stir for 3 minutes;

[0046] C. After crushing the mixed material in step B, put it into the twin-screw extruder. From the feed to the discharge port, the temperatures of the six heating sections are 165...

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Abstract

The invention relates to the technical field of degradable materials, in particular to a high-content-rice husk fiber-filled PBAT-based composite material. The composite material comprises the following components: in parts by weight, 90-110 parts of rice husk powder, 35-90 parts of PBAT, 10-25 parts of PLA, 2-5 parts of a super dispersant, 5-20 parts of a compatibilizer, 1-4 parts of a heat stabilizer and 2-4 parts of a lubricant. The raw materials are mixed and stirred in a high-speed mixer at 120 DEG C, and then crushing, extrusion and injection moulding are performed. The rice husk powderas agricultural processing waste has rich raw material sources, low price and biodegradability at the same time, the rice husk powder is adopted as filler of the degradable polymer PBAT, and the rigidity and toughness of the composite material can be balanced well under the action of the processing aids; and the method has simple operation and low production cost, and is beneficial to industrial production of PBAT degradable composite materials.

Description

technical field [0001] The invention relates to the technical field of degradable materials, in particular to a PBAT-based composite material filled with high content of rice husk fiber and its preparation method and application. Background technique [0002] With its excellent comprehensive performance, plastics are widely used in many fields of the national economy, and have become the basic material industry since the new century. Its application field even surpasses the three basic material industries of steel, cement and wood, and has become an indispensable item in people's daily life. one. Traditional plastics such as polyethylene (PE), polycarbonate (PC), polypropylene (PP), and polyamide (PA) are mostly made of petroleum, which are not biodegradable and can easily cause "white pollution" and seriously damage the environment. The earth environment we live in. In the context of increasingly prominent environmental protection issues and an increasingly urgent need fo...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L67/02C08L67/04C08L51/08C08K5/098
CPCC08L97/02C08L2201/06C08L2205/02C08L2205/035C08L67/02C08L67/04C08L51/08C08K5/098
Inventor 王少会庄展鹏柯婵
Owner XIAMEN HUSKS NEW MATERIAL TECH CO LTD
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