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Ternary built poly lactic acid type composite material and its use

A composite material, polylactic acid technology, applied in the ternary compound polylactic acid composite material and its application field, 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

[0007] One of the purposes of the present invention is to provide a polylactic acid type composite material that can be completely biodegraded by ternary compounding to solve the problem of poor molding processability, product heat resistance stability, dimensional stability and physical and chemical properties of polylactic acid single resin etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Take each component by weight % as follows:

[0081] PLA 45.0

[0082] PPC 38.0

[0083] PHB6.0

[0084] Montmorillonite (MMT) 1.0

[0085] PEG 3.0

[0086] Acetyl tributyl citrate 4.2

[0087] Triphenyl phosphite 0.5

[0088] Erucamide 0.4

[0089] Dibenylene sorbitol 0.05

[0090] Benzophenone 0.1

[0091] Oxalic acid 0.1

[0092] HALS 0.1

[0093] Glyceryl monolaurate 0.5

[0094] Silica powder 1.0

[0095] Phthalocyanine 0.05

[0096] The preparation process is as follows:

[0097] Dry the raw materials in an oven at 45-65°C for 6-10 hours, then stir in a high-speed mixer for 5-10 minutes at a low speed, then stir at a high speed for 3-5 minutes, and then enter the co-rotating twin-screw extruder for extrusion To granulate, the processing conditions are as follows:

[0098] Length-to-diameter ratio: 44:1

[0099] Zone 2: Liquid filling and feeding

[0100] Zone 7: Vacuum exhaust

[0101] Combination arrangement of screws: mixing elements, kneading ...

Embodiment 2

[0127] Take each component by weight % as follows:

[0128] PLA 45.0

[0129] PPC 6.0

[0130]PHB 38.0

[0131] Montmorillonite (MMT) 1.0

[0132] PEG 3.0

[0133] Acetyl tributyl citrate 4.2

[0134] Triphenyl phosphite 0.5

[0135] Erucamide 0.4

[0136] Dibenylene sorbitol 0.05

[0137] Benzophenone 0.1

[0138] Oxalic acid 0.1

[0139] HALS 0.1

[0140] Glyceryl monolaurate 0.5

[0141] Silica powder 1.0

[0142] Phthalocyanine 0.05

[0143] Processing technology sees embodiment 1.

[0144] The properties of the obtained products are shown in Table 2.

[0145]

Embodiment 3

[0147] Take each component by weight % as follows:

[0148] PLA75.0

[0149] PPC 5.0

[0150] PHB 8.0

[0151] Montmorillonite (MMT) 2.0

[0152] PEG 5.0

[0153] Epoxidized soybean oil 1.9

[0154] Triphenyl phosphite 0.7

[0155] Zinc stearate 0.5

[0156] Dibenzylidene sorbitol 0.05

[0157] Benzophenone 0.1

[0158] Oxalic acid 0.1

[0159] HALS 0.1

[0160] Glyceryl monolaurate 0.5

[0161] Silica powder 1.0

[0162] Phthalocyanine 0.05

[0163] Processing technology sees embodiment 1.

[0164] The properties of the obtained product are shown in Table 3:

[0165]

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Abstract

The ternary built polylactic acid type composite material consists of PLA 45.0-80.0 wt%, PPC 4.0-40.0 wt%, PHB 4.0-40.0 wt% and various assistants. The ternary built polylactic acid type composite material is used as mother material for preparing thermoplastic material with improved forming machining property and heat resistant, 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 ternary composite fully biodegradable polylactic acid composite material 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 into carbon dioxide and water in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K5/521C08K5/524C08L69/00
Inventor 冉祥海庄宇刚韩常玉张坤玉董丽松苏旋
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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