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A kind of lignin modified PBS biodegradable plastic and preparation method thereof

A technology of biodegradable plastics and lignin, applied in the field of lignin-modified PBS biodegradable plastics and its preparation, can solve the problems of white pollution, non-degradable, etc., achieve low production costs, facilitate market promotion, and reduce costs

Active Publication Date: 2019-07-02
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since most of the plastic products cannot be degraded after being discarded, they exist for a long time, and the continuous accumulation has caused serious white pollution. Environmentally friendly plastic products are becoming more and more urgent and have aroused extensive interest of researchers. Among them, degradable resins have become a research hotspot due to their degradation characteristics and economic characteristics.

Method used

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  • A kind of lignin modified PBS biodegradable plastic and preparation method thereof
  • A kind of lignin modified PBS biodegradable plastic and preparation method thereof
  • A kind of lignin modified PBS biodegradable plastic and preparation method thereof

Examples

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Embodiment 1

[0032] The preparation of embodiment 1 lignin modified PBS biodegradable plastics

[0033] (1) In terms of parts by weight, the proportioning ratio of each raw material used is as follows:

[0034]

[0035]

[0036] (2) Concrete preparation method, comprising the following steps:

[0037] (1) Dry a certain amount of PBS and lignin powder (150 mesh) at 25°C and 0-5000Pa for 2.5h;

[0038] (2) Add dry PBS, lignin powder, 1,6-hexanediol, butyl hydrodiphenol, triethyl citrate, epoxy soybean oil, calcium stearate into the high mixer to control the material The temperature is 100-105°C, mixed for 15 minutes, and the speed is 900r / min;

[0039] (3) extruding and granulating the obtained mixed material through a twin-screw extruder, controlling the extrusion temperature to be 130-140° C. to obtain lignin-PBS composite plastic particles;

[0040] (4) The lignin-PBS composite plastic is blown into a film, and the injection molding temperature is controlled at 140-145° C. to pre...

Embodiment 2

[0041] Embodiment 2 Preparation of lignin-modified PBS biodegradable plastics

[0042] (1) In terms of parts by weight, the proportioning ratio of each raw material used is as follows:

[0043]

[0044] (2) Concrete preparation method, comprising the following steps:

[0045] (1) Dry a certain amount of PBS and lignin (150 mesh) at 25°C and 0-5000Pa for 3 hours;

[0046] (2) Add dry PBS, lignin, acetyl tri-n-butyl citrate, resorcinol dihydroxyethyl ether, butyl hydrodiphenol, epoxy soybean oil, calcium stearate into the high mixer , control the material temperature to 110°C, mix for 20 minutes, and the speed is 1000r / min;

[0047](3) Extruding and granulating the obtained mixed material through a twin-screw extruder, controlling the extrusion temperature to be 140-150° C. to obtain lignin-PBS composite plastic particles;

[0048] (4) The lignin-PBS composite plastic is blown into a film, and the injection molding temperature is controlled at 130-135° C. to prepare variou...

Embodiment 3

[0049] Embodiment 3 Preparation of lignin-modified PBS biodegradable plastics

[0050] (1) In terms of parts by weight, the proportioning ratio of each raw material used is as follows:

[0051]

[0052] (2) Concrete preparation method, comprising the following steps:

[0053] (1) Dry a certain amount of PBS and lignin (200 mesh) at 25°C and 0-5000Pa for 3 hours;

[0054] (2) Add dried PBS, lignin, maleic anhydride, glycerol triacetate, butyl hydrodiphenol, 1,4-butanediol, zinc stearate into the high mixer to control the material temperature at 105°C, mix for 25 minutes, and the speed is 1000r / min;

[0055] (3) extruding and granulating the obtained mixed material through a twin-screw extruder, controlling the extrusion temperature to be 160-170° C. to obtain lignin-PBS composite plastic granules;

[0056] (4) The lignin-PBS composite plastic is blown into a film, and the injection molding temperature is controlled at 150-160° C. to prepare various lignin-modified PBS bio...

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Abstract

The invention discloses a preparation method of lignin modified PBS biodegradable plastic. The method comprises the following steps: 1, carrying out vacuum drying on polybutylene succinate and lignin; 2, adding the dried polybutylene succinate, the dried lignin, a chain extender, an antioxidant, a plasticizer, a lubricant and a heat stabilizer into a high mixer, and fully mixing all above materials; 3, carrying out extruding granulation on the obtained mixture in a double screw extruder; and 4, carrying out film blowing on obtained lignin-PBS composite plastic granules at a certain temperature in order to produce the lignin modified PBS biodegradable plastic. The biodegradable film is produced from the biomass lignin massively existing in the nature and the PBS through the method, and compounding modification meets complete degradation requirements, so the mechanical performances of pure PBS resin are enhanced, the production cost is effectively reduced, and market promotion is facilitated.

Description

technical field [0001] The invention relates to the technical field of degradable plastics, in particular to a lignin-modified PBS biodegradable plastic and a preparation method thereof. Background technique [0002] At present, with the continuous development of the national economy, the consumption of plastic products is increasing, and synthetic plastics are playing an increasingly important role in production and life. However, since most of the plastic products cannot be degraded after being discarded, they exist for a long time, and the continuous accumulation has caused serious white pollution. Environmentally friendly plastic products are becoming more and more urgent and have aroused extensive interest of researchers. Among them, degradable resins have become a research hotspot due to their degradation characteristics and economic characteristics. [0003] Polybutylene succinate (PBS) is a fully biodegradable polymer, which can be degraded into H under the action o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L97/00C08L91/00C08K5/13C08K5/06C08K5/11C08K5/098C08K5/053C08K5/1539C08K5/526C08K5/103C08J5/18
CPCC08J5/18C08J2367/04C08J2497/00C08L67/02C08L2201/06C08L2203/16C08L2205/03C08L97/005C08L91/00C08K5/13C08K5/053C08K5/11C08K5/098C08K5/06C08K5/103C08K5/1539C08K5/526
Inventor 施晓旦邵威金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD