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PLA (polylactic acid)-PBC (poly(butylene carbonate)) composite material and preparation method thereof

A technology of composite materials and mixtures, which is applied in the field of PLA-PBC composite materials and their preparation, can solve the problems of limited wide application and low crystallization ability, and achieve the effect of improving crystallization speed and crystallinity and excellent mechanical properties

Active Publication Date: 2015-12-30
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polylactic acid (PLA) has attracted widespread attention in the industry for its good biodegradability and high mechanical properties, but compared with petroleum-based engineering plastics widely used in industry, PLA is brittle and has low crystallization ability. However, it greatly limits its wide application

Method used

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  • PLA (polylactic acid)-PBC (poly(butylene carbonate)) composite material and preparation method thereof
  • PLA (polylactic acid)-PBC (poly(butylene carbonate)) composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Take by weight 70 parts of PLA, 10 parts of PBC, 0.3 part of modified nano-titanium dioxide, 0.1 part of Irganox168 and mix and stir evenly to obtain a mixture;

[0032] (2) Put the mixture obtained in the step (1) into the hopper of the twin-screw extruder and extrude granulation to obtain the PLA-PBC composite material P1, wherein the first temperature zone of the twin-screw extruder The temperature is 70°C, the temperature in the second temperature zone is 120°C, the temperature in the third temperature zone is 130°C, the temperature in the fourth temperature zone is 140°C, the temperature in the fifth temperature zone is 140°C, and the temperature in the sixth temperature zone The temperature is 140° C., the head temperature of the twin-screw extruder is 130° C., and the screw speed is 120 r / min.

Embodiment 2

[0034] (1) Take by weight 90 parts of PLA, 30 parts of PBC, 0.9 part of modified nano titanium dioxide, 0.5 part of Irganox1010 and mix and stir evenly to obtain a mixture;

[0035] (2) Put the mixture obtained in step (1) into the hopper of the twin-screw extruder and extrude and granulate to obtain the PLA-PBC composite material P2, wherein the first temperature zone of the twin-screw extruder The temperature is 100°C, the temperature in the second temperature zone is 220°C, the temperature in the third temperature zone is 230°C, the temperature in the fourth temperature zone is 230°C, the temperature in the fifth temperature zone is 230°C, and the temperature in the sixth temperature zone The temperature is 240° C., the head temperature of the twin-screw extruder is 200° C., and the screw speed is 300 r / min.

Embodiment 3

[0037] (1) Take 80 parts by weight of PLA, 20 parts of PBC, 0.6 part of nano-titanium dioxide, 0.15 part of Irganox1010 and 0.15 part of Irganox1330 and mix and stir evenly to obtain a mixture;

[0038] (2) Put the mixture obtained in the step (1) into the hopper of the twin-screw extruder and extrude granulation to obtain the PLA-PBC composite material P3, wherein the first temperature zone of the twin-screw extruder The temperature is 85°C, the temperature in the second temperature zone is 170°C, the temperature in the third temperature zone is 180°C, the temperature in the fourth temperature zone is 185°C, the temperature in the fifth temperature zone is 185°C, and the temperature in the sixth temperature zone is 180°C. The temperature is 190° C., the head temperature of the twin-screw extruder is 165° C., and the screw speed is 210 r / min.

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Abstract

The invention provides a PLA (polylactic acid)-PBC (poly(butylene carbonate)) composite material and a preparation method thereof. The PLA-PBC composite material comprises components in parts by weight as follows: 70-90 parts of PLA, 10-30 parts of PBC, 0.3-0.9 parts of Nano-TiO2 and 0.1-0.5 parts of an antioxidant. Nano-TiO2 in the composite material has a heterogeneous nucleation function so as to increase the crystallization velocity and the crystallinity of PLA and PBC, and accordingly, the PLA-PBC composite material integrating advantages of PLA and PBC is obtained.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a PLA-PBC composite material and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) has attracted widespread attention in the industry for its good biodegradability and high mechanical properties, but compared with petroleum-based engineering plastics widely used in industry, PLA is brittle and has low crystallization ability. However, its wide application is greatly limited. Polybutylene carbonate (PBC), namely poly(1,4-butylene carbonate), as a new type of biodegradable aliphatic polycarbonate synthesized from carbon dioxide, has excellent toughness. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a PLA-PBC composite material having the advantages of both PLA and PBC and a preparation method thereof. [0004] In order to solve the problems of the technologies described above, the PLA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L69/00C08K9/06C08K3/22B29B9/06B29C47/92B29C48/92
Inventor 刘凯黄家奇程健
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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