Quaternary built completely biological degradation polylactic acid type composite material and use

A composite material and biodegradable technology, which is applied in the field of multi-component and fully biodegradable polylactic acid composite materials, can solve the problems of polylactic acid single resin molding processability, heat resistance, stability, poor physical and chemical properties of dimensional stability, etc. Improve heat resistance and dimensional stability, and achieve the best physical and chemical properties

Inactive Publication Date: 2006-03-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the objectives of the present invention is to provide a polylactic acid type composite material that can be completely biodegraded by four-component compounding, so as to solve the problem of polylactic acid single resin molding processability, product heat resistance stability, dimensional stability and poor physical and chemical properties. etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Take each component by weight % as follows:

[0066] PLA75.0

[0067] PPC 5.0

[0068] PCL 5.0

[0069] PHB 3.0

[0070] Montmorillonite (MMT) 2.0

[0071] PEG 5.0

[0072] Epoxidized soybean oil 1.9

[0073] Triphenyl phosphite 0.7

[0074] Zinc stearate 0.5

[0075] Dibenzylidene sorbitol 0.05

[0076] Benzophenone 0.1

[0077] Oxalic acid 0.1

[0078] HALS 0.1

[0079] Glyceryl monolaurate 0.5

[0080] Silica powder 1.0

[0081] Phthalocyanine 0.05

[0082] The preparation process is as follows: dry the raw materials weighed according to the ratio in an oven at 50°C-80°C for 6-10 hours, then stir in a high-speed mixer for 5-10 minutes at a low speed, and then stir at a high speed for 3-5 minutes before discharging. into the co-rotating twin-screw extruder, the co-rotating twin-screw extruder

[0083] Length-to-diameter ratio: 44:1

[0084] Zone 2: liquid filling and feeding

[0085] Seven zone: vacuum exhaust

[0086] Combination arrangement of scre...

Embodiment 2

[0112] Take each component by weight % as follows:

[0113] PLA 80.0

[0114] PPC 3.0

[0115] PCL 3.0

[0116] PHB 3.0

[0117] Montmorillonite (MMT) 1.0

[0118] Acetyl tributyl citrate 5.0

[0119] Epoxidized soybean oil 1.9

[0120] Triphenyl phosphite 0.7

[0121]Stearamide 0.5

[0122] Dibenylene sorbitol 0.05

[0123] Acetophenone 0.1

[0124] Tartaric acid 0.1

[0125] HALS 0.1

[0126] Glyceryl monolaurate 0.5

[0127] Silica powder 1.0

[0128] Transparent Violet 0.05

[0129] Processing technology sees embodiment 1.

[0130] The properties of the obtained products are shown in Table 2.

[0131]

Embodiment 3

[0133] Take each component by weight % as follows:

[0134] PLA 45.0

[0135] PPC 38.0

[0136] PCL 3.0

[0137] PHB 3.0

[0138] Montmorillonite (MMT) 1.0

[0139] PEG 3.0

[0140] Acetyl tributyl citrate 4.2

[0141] Triphenyl phosphite 0.5

[0142] Erucamide 0.4

[0143] Dibenylene sorbitol 0.05

[0144] Benzophenone 0.1

[0145] Oxalic acid 0.1

[0146] HALS 0.1

[0147] Glyceryl monolaurate 0.5

[0148] Silica powder 1.0

[0149] Phthalocyanine 0.05

[0150] Processing technology sees embodiment 1.

[0151] The properties of the obtained product are shown in Table 3:

[0152]

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Abstract

The quaternary built completely biodegradable polylactic acid type composite material consists of PLA 45.0-80.0 wt%, PPC 3.0-38.0 wt%, PCL 3.0-38.0 wt%, PHB 3.0-38.0 wt% and various assistants. The quaternary built completely biodegradable polylactic acid type composite material is one kind of thermoplastic material, and has improved forming machining property, raised tearing strength and high product size stability. It may be blow molded to produce various film products with excellent physical and chemical performance and controllable biodegradation speed for wide application in packing and agriculture.

Description

technical field [0001] The invention relates to a polylactic acid type composite material which can be fully biodegraded by multi-component compounding and its application. Background technique [0002] In order to solve the problem of "white pollution" caused by plastic products, the use of environmentally friendly fully biodegradable polymers to replace traditional petroleum-based plastics has become a hot spot in current research and development. Among many biodegradable polymers, aliphatic polyesters, such as polylactic acid (PLA), polyhydroxyalkanoates (PHAs), polyε-caprolactone (PCL), polypropylene carbonate (PPC), etc., show It has excellent performance, and has a wide range of application fields and significant social and economic benefits. Polylactic acid (PLA) is a synthetic thermoplastic aliphatic polyester, and its monomer lactic acid is fermented from renewable corn and grains. PLA has excellent biodegradability and biocompatibility, and finally decomposes int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K5/524C08L69/00
Inventor 冉祥海张坤玉庄宇刚吴航董丽松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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