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Polyester composite filled with lignin and preparation method thereof

A composite material and lignin technology, which is applied in the field of lignin-filled polyester composite materials and its preparation, can solve the problems of lignin application, etc., and achieve the effect of reducing production costs and simple preparation process

Inactive Publication Date: 2011-05-25
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, no technology has been able to apply lignin in large quantities

Method used

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  • Polyester composite filled with lignin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The premixed mixture containing 95% (wt%) polycaprolactone (80,000 weight-average molecular weight) and 5% (wt%) cellulose enzymatic lignin was added to the twin-screw machine, and melt blended , extruded and granulated into a composite material, and injected into a test sample for performance testing.

[0029] The set temperature and processing conditions of each zone of the screw are: the temperatures in zones 1 to 7 are 120°C, 130°C, 135°C, 140°C, 145°C, 145°C, 135°C, and the head temperature is 135°C, stay for 3 to 5 minutes , the pressure is 12MPa, and the feeding speed is 198rpm.

Embodiment 2

[0031] The premixed mixture containing 90% (wt%) polycaprolactone (weight average molecular weight 80,000) and 10% (wt%) cellulose enzymatic lignin is added to the twin-screw machine, and melt blended , extruded and granulated into a composite material, and injected into a test sample for performance testing.

[0032] The set temperature and processing conditions of each zone of the screw are: the temperatures in zones 1 to 7 are 120°C, 130°C, 135°C, 140°C, 145°C, 145°C, 135°C, and the head temperature is 135°C, stay for 3 to 5 minutes , the pressure is 12MPa, and the feeding speed is 198rpm.

Embodiment 3

[0034] The premixed mixture containing 80% (wt%) polycaprolactone (weight average molecular weight 80,000) and 20% (wt%) cellulose enzymatic lignin is added to the twin-screw machine, and melt blended , extruded and granulated into a composite material, and injected into a test sample for performance testing.

[0035] The set temperature and processing conditions of each zone of the screw are: the temperatures in zones 1 to 7 are 120°C, 130°C, 135°C, 140°C, 145°C, 145°C, 135°C, and the head temperature is 135°C, stay for 3 to 5 minutes , the pressure is 12MPa, and the feeding speed is 198rpm.

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Abstract

The invention discloses a polyester composite filled with lignin and a preparation method thereof. The preparation method comprises the following steps: mixing polyester and lignin evenly, wherein the weight percentages of polyester and lignin are separately 60-95% and 5-40%; and performing melt extrusion granulation to the mixed material with a twin screw extruder to obtain the polyester composite filled with lignin. The preparation method of the invention uses rich, cheap and renewable biological resource lignin to fill biodegradable polyester material, thus the production cost of the material can be reduced extremely without affecting the good performances of the polyester matrix; and the preparation process is simple and has a certain social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of biodegradable polymer materials, in particular to a lignin-filled polyester composite material and a preparation method thereof. Background technique [0002] The energy crisis and environmental problems require people to reduce their dependence on petroleum resources and turn to the development and utilization of renewable biological resources and environmentally friendly materials. Polyester biodegradable materials have the characteristics of good biocompatibility and can be decomposed and absorbed by microorganisms without polluting the environment. They are materials that meet the requirements of sustainable development and have promising prospects. The field has broad application prospects. However, the high production cost caused by the immature research technology is an important reason to limit the further research and application of polyester materials. [0003] Lignin is an annual plant, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L97/00B29C47/92B29C48/92
CPCB29C48/04
Inventor 欧阳文竹黄勇
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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