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Starch modified total biology-based PBAT biodegradable plastic and preparation method thereof

A biodegradable plastic and starch modification technology, applied in the field of bioplastics, can solve the problems of consumption of petroleum resources, excessive carbon dioxide, etc., and achieve the effect of solving white pollution, reducing consumption, and realizing recycling

Inactive Publication Date: 2018-12-07
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The raw materials of PBAT are terephthalic acid, adipic acid and butanediol. Although PBAT plastics are biodegradable plastics, judging from the production equipment that has been industrialized at present, its three raw materials are still from the petrochemical industry. to extract, so PBAT plastic consumes petroleum resources and produces more carbon dioxide during the production process

Method used

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  • Starch modified total biology-based PBAT biodegradable plastic and preparation method thereof
  • Starch modified total biology-based PBAT biodegradable plastic and preparation method thereof
  • Starch modified total biology-based PBAT biodegradable plastic and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation of embodiment 1 starch-modified PBAT biodegradable plastics

[0034] (1) The ratio (mass ratio) of raw materials is as follows:

[0035]

[0036] (2) According to the proportioning of above-mentioned raw materials, adopt the following steps to prepare:

[0037] (1) according to the method shown in authorized patent CN104031246A embodiment 4 synthetic all bio-based PBAT biodegradable resin;

[0038] (2) Dry a certain amount of bio-based PBAT and cornstarch at 25 degrees, 0-5000Pa for 2.0h;

[0039] (3) Add dried bio-based PBAT, starch, bisphenol A, dibutyl hydroxytoluene, triethyl citrate, epoxidized soybean oil, and zinc stearate into the high mixer and mix for 15 minutes;

[0040] (4) extruding and granulating the obtained mixed material through a twin-screw extruder to obtain starch-bio-based PBAT composite plastic particles;

[0041] (5) The composite plastic can be made into various fully bio-based biodegradable plastic film materials through f...

Embodiment 2

[0042] Embodiment 2 Preparation of starch-modified bio-based PBAT biodegradable plastics

[0043] (1) The ratio (mass ratio) of raw materials is as follows:

[0044]

[0045] (2) According to the proportioning of above-mentioned raw materials, adopt the following steps to prepare:

[0046] (1) according to the method shown in authorized patent CN104031246A embodiment 4 synthetic all bio-based PBAT biodegradable resin;

[0047] (2) Dry a certain amount of bio-based PBAT and tapioca starch at 25 degrees, 0-5000Pa for 3 hours;

[0048] (3) Add dry bio-based PBAT, starch, acetyl tri-n-butyl citrate, resorcinol dihydroxyethyl ether, butyl hydroquinone, epoxidized soybean oil, stearic acid into the high mixer Calcium mix for 20 minutes;

[0049] (4) extruding and granulating the obtained mixed material through a twin-screw extruder to obtain starch-PBAT composite plastic particles;

[0050] (5) The composite plastic can be made into various fully bio-based biodegradable plast...

Embodiment 3

[0051] Embodiment 3 Preparation of starch-modified bio-based PBAT biodegradable plastics

[0052] (1) The ratio (mass ratio) of raw materials is as follows:

[0053]

[0054] (2) According to the proportioning of above-mentioned raw materials, adopt the following steps to prepare:

[0055] (1) according to the method shown in authorized patent CN104031246A embodiment 4 synthetic all bio-based PBAT biodegradable resin;

[0056] (2) Dry a certain amount of bio-based PBAT and cornstarch at 25 degrees and 0-5000 Pa for 3 hours;

[0057] (3) Add dried bio-based PBAT, starch, maleic anhydride, glycerol triacetate, butyl hydrodiphenol, 1,4-butanediol, and zinc stearate into the high mixer and mix for 25 minutes ;

[0058] (4) extruding and granulating the obtained mixed material through a twin-screw extruder to obtain starch-PBAT composite plastic pellets;

[0059] (5) The composite plastic can be made into various fully bio-based biodegradable plastic film materials through fil...

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Abstract

The invention discloses starch modified total biology-based polybutylene adipate terephthalate (PBAT) biodegradable plastic and a preparation method thereof. The preparation method comprises the following steps: (1) synthesizing total biology-based PBAT biodegradable resin according to a method disclosed by the fourth embodiment of a patent with the publication number of CN104031246A; (2) carryingout vacuum drying on the total biology-based PBAT and starch; (3) adding the dried total biology-based PBAT biodegradable resin and starch, a chain extender, an antioxidant, a plasticizer, a lubricant and a heat stabilizer into a high-speed mixer, and uniformly carrying out mixing; (4) carrying out extruding granulation on the obtained mixed material through a double-screw extrusion machine; and(5) carrying out film blowing on the composite plastic particles at a certain temperature to prepare the biodegradable plastic. According to the starch modified total biology-based PBAT biodegradableplastic prepared by the method, the requirements of complete degradation are met after the composite modification is carried out, the mechanical properties of pure PBAT resin are enhanced, the production cost is effectively reduced, and popularization and application in the market are facilitated.

Description

technical field [0001] The invention relates to the technical field of biological plastics, in particular to a starch-modified all-biological-based PBAT 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 terephthalate / adipate (PBAT) is a completely biodegradable polyester materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L3/02C08L91/00C08K5/00C08K5/13C08K5/11C08K5/098
CPCC08K2201/014C08L67/02C08L2201/06C08L2205/025C08L2205/03C08L2205/035C08L3/02C08L91/00C08K5/00C08K5/13C08K5/11C08K5/098
Inventor 施晓旦邵威
Owner JINING MING SHENG NEW MATERIALS CO LTD
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