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Nano-Al2O3 modified biopolymer material and preparation method thereof

A biopolymer and nanotechnology, applied in the field of polypropylene, can solve the problems of hindering widespread use, low elongation at break, low melt strength, etc., and achieve the effects of improving strength and toughness, improving material performance, and improving agglomeration

Active Publication Date: 2017-05-24
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its low melt strength, low crystallization rate, severe post-crystallization, and simple and regular chemical structure, poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] materials Strong brittleness and extremely low elongation at break hinder its widespread use

Method used

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  • Nano-Al2O3 modified biopolymer material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 1g of solid titanate coupling agent TMC-201 into 10mL of isopropanol, ultrasonicate for 10min (ultrasonic frequency 80Hz) to form a homogeneous solution, add 15g of nano-Al 2 o 3 After reacting for 2 hours, filter and dry in vacuum at 30°C for 14 hours to obtain modified nano-Al 2 o 3 Material.

[0026] 90kg P(3HB-co-4HB), 10kg modified nano Al 2 o 3 Materials, 0.2 kg of phenolic heat stabilizer 1010, 0.2 kg of lubricant EBS were melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and all raw materials were blended and extruded to obtain nano-Al 2 o 3 Modified biopolymer materials. The processing temperature during preparation was 150°C.

Embodiment 2

[0028] Add 2g of solid titanate coupling agent TMC-201 into 40mL of isopropanol, ultrasonicate for 20min (ultrasonic frequency 90Hz) to form a uniform solution, add 60g of nano-Al 2 o 3 After reacting for 3 hours, filter and dry in vacuum at 50°C for 20 hours to obtain modified nano-Al 2 o 3 Material.

[0029] 80kgP (3HB-co-4HB), 20kg nano Al 2 o 3 Materials, 0.1kg lubricant zinc stearate, 0.1kg lubricant calcium stearate, 0.25 kg phenolic heat stabilizer 1010 are melt mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 56:1, and all raw materials are After mixing, extruding and granulating, nano-Al 2 o 3 Modified biopolymer materials. The processing temperature during preparation was 130°C.

Embodiment 3

[0031] Add 1g of solid titanate coupling agent TMC-201 into 3mL of isopropanol, ultrasonicate for 3min (ultrasonic frequency 60Hz) to form a homogeneous solution, add 10g of nano-Al 2 o 3 After reacting for 1 hour, filter and dry in vacuum for 8 hours at 25°C to obtain modified nano-Al 2 o 3 Material.

[0032] 97kg polypropylene, 3kg nanometer Al 2 o 3 Materials, 0.3kg phenolic heat stabilizer 1010 and 0.3kg lubricant EBS, were melt mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 35:1, and all raw materials were blended and extruded to obtain nano-Al 2 o 3 Modified biopolymer materials. The processing temperature during preparation was 160°C.

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Abstract

The invention discloses a nano-Al2O3 modified biopolymer material and a preparation method thereof. The nano-Al2O3 modified biopolymer material is formed through mixing and extruding 3-20 parts of a modifying nano-Al2O3 material, 97-80 parts of P(3HB-co-4HB), 0.1-0.3 parts of a heat stabilizer and 0.1-0.3 parts of a lubricant. A biopolymer material poly(3-hydroxy butyrate-3-co-4-hydroxy butyrate) [P(3HB-co-4HB)] material is modified with nano-Al2O3 through a melt blending technology to improve the disadvantages of low crystallization rate, severe post-crystallization, low strength and poor toughness of the [P(3HB-co-4HB)] material, and the [P(3HB-co-4HB)] material has good biodegradability and biocompatibility, so the nano-Al2O3 modified biopolymer material has wide application prospect in the fields of biological and degradable materials.

Description

technical field [0001] The invention relates to the technical field of polypropylene, in particular to a nano-Al 2 o 3 Modified biopolymer material and its preparation method. Background technique [0002] Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] material is a microbially synthesized polymer copolyester with good biodegradability and biocompatibility sex has received widespread attention. At the same time, some properties are similar to thermoplastics, and the mechanical properties are also similar to polypropylene materials, which will become the first choice to replace traditional materials. However, due to its low melt strength, low crystallization rate, severe post-crystallization, and simple and regular chemical structure, poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] materials Strong brittleness and extremely low elongation at break hinder its widespread use. Contents of the invention [0003] The object of the invention is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K13/06C08K9/04C08K3/22C08K5/134
Inventor 杨桂生计娉婷
Owner HEFEI GENIUS NEW MATERIALS
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