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A kind of biodegradable modified lignin particle and its manufacturing method

A technology of biodegradation and manufacturing method, which is applied in the field of biodegradable modified lignin particles and its manufacture, can solve the problems of increasing the cost of fully biodegradable materials, poor mechanical properties and processing stability, and low elasticity of fully biodegradable materials. Achieve the effect of avoiding waste of food resources, improving material carrying capacity, and abundant reserves

Inactive Publication Date: 2018-04-10
高陈堰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in China and around the world, common fully biodegradable materials generally use polylactic acid (PLA) as a raw material, which needs to be made from starch raw materials extracted from plant resources (such as corn), and the production process requires consumption A large amount of edible food for human beings not only causes a waste of food resources, but also increases the cost of manufacturing and producing fully biodegradable materials, which is not suitable for promotion on a large scale
At the same time, the fully biodegradable materials prepared using starch as a raw material have low elasticity, poor mechanical properties and processing stability, and are very sensitive to humidity. Under high or low humidity conditions, the quality of the material will change. The problem of slow performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A biodegradable modified lignin particle, the raw material components used include:

[0033] 45 parts by weight of lignin, 47 parts by weight of polybutylene adipate / terephthalate, 3 parts by weight of stearic acid, 2 parts by weight of polyethylene wax and 0.5 parts by weight of oleic acid amide.

[0034] A method for preparing the biodegradable modified lignin particles, comprising the following steps:

[0035] (1) Take each raw material component according to the above parts by weight and mix them to obtain a mixture. The mixture was heated to 50° C. and stirred at a stirring speed of 300 r / min for 12 minutes, so that the raw material components in the mixture were further uniformly mixed to obtain a coarse material;

[0036] (2) Get the coarse material obtained in the step (1), use a twin-screw extrusion granulator to carry out granulation operation, the screw speed is 150r / min, and the granulation temperature is 120°C, to obtain the obtained granules with a partic...

Embodiment 2

[0038] A biodegradable modified lignin particle, the raw material components used include:

[0039] 38 parts by weight of lignin, 55 parts by weight of polybutylene adipate / terephthalate, 2 parts by weight of stearic acid, 3 parts by weight of polyethylene wax and 0.8 parts by weight of oleic acid amide.

[0040] A method for preparing the biodegradable modified lignin particles, comprising the following steps:

[0041] (1) Take each raw material component according to the above parts by weight and mix them to obtain a mixture. The mixture was heated to 40° C. and stirred at a stirring speed of 500 r / min for 8 minutes, so that the raw material components in the mixture were further uniformly mixed to obtain a coarse material;

[0042] (2) Get the coarse material obtained in the step (1), use a twin-screw extrusion granulator to carry out the granulation operation, the screw speed is 100r / min, and the granulation temperature is 150°C, to obtain the obtained granules with a par...

Embodiment 3

[0044] A biodegradable modified lignin particle, the raw material components used include:

[0045] 38 parts by weight of lignin, 40 parts by weight of polybutylene adipate / terephthalate, 3 parts by weight of stearic acid, 3 parts by weight of polyethylene wax and 1 part by weight of oleic acid amide.

[0046] A method for preparing the biodegradable modified lignin particles, comprising the following steps:

[0047] (1) Take each raw material component according to the above parts by weight and mix them to obtain a mixture. The mixture was heated up to 60° C. and stirred at a stirring speed of 300 r / min and a stirring time of 12 minutes, so that the raw material components in the mixture were further uniformly mixed to obtain a coarse material;

[0048](2) Get the coarse material gained in step (1), use a twin-screw extrusion granulator to carry out the granulation operation, the screw speed is 300r / min, and the granulation temperature is 120°C, to obtain the 1cm particle di...

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Abstract

The invention relates to biodegradable modified lignin particles. The biodegradable modified lignin particles comprise the following raw components: 35 to 45 weight parts of lignin, 40 to 55 weight parts of poly(butylene adipate / terephthalate), 4 to 6 weight parts of auxiliary agents and 0.5 to 1 weight part of an organic anti-blocking agent; the auxiliary agents comprise stearic acid and polyethylene wax. A production method for the biodegradable modified lignin particles comprises the following steps: mixing the raw components according to the above parts by weight; heating and obtaining a coarse material after the raw components are mixed uniformly; taking the coarse material and granulating the coarse material to obtain the biodegradable modified lignin particles. The biodegradable modified lignin particles can be completely biodegraded after use, have high mechanical and processing performance, and have important significance to protect ecological environment and reduce white pollution. The biodegradable modified lignin particles are simple in production process and low in cost, and are suitable for batch production.

Description

technical field [0001] The invention belongs to the technical field of environmentally friendly degradable materials, and in particular relates to a biodegradable modified lignin particle and a manufacturing method thereof. Background technique [0002] Biodegradable material is a good environment-friendly material, and the popularization and use of this material is of great significance to reduce white pollution and protect the natural environment. At present, in China and around the world, common fully biodegradable materials generally use polylactic acid (PLA) as a raw material, which needs to be made from starch raw materials extracted from plant resources (such as corn), and the production process requires consumption A large amount of edible food for human beings not only causes waste of food resources, but also increases the cost of manufacturing and producing completely biodegradable materials, which is not suitable for promotion on a large scale. At the same time, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L97/00C08L23/06C08K5/09C08K5/20C08K3/26
CPCC08L67/02C08L2201/06C08L2201/08C08L2205/03C08L97/005C08L23/06C08K5/09C08K5/20C08K2003/265
Inventor 高陈堰
Owner 高陈堰
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