Thermoplastic konjac glucomannan/graphene oxide compound material and preparation method thereof

A konjac glucomannan and composite material technology is applied in the field of thermoplastic konjac glucomannan/graphene oxide composite material and its preparation, and achieves the effects of biodegradable source, high modulus and improved performance

Inactive Publication Date: 2012-09-19
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there are no literature reports on thermoplastic konjac glucomannan / graphene oxide composites

Method used

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  • Thermoplastic konjac glucomannan/graphene oxide compound material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take graphene oxide 0.1g by weight, be dissolved in ethanol, be mixed with the graphene oxide ethanol solution that concentration is 0.1g / L, then use the ultrasonic equipment that power is 500W to carry out sonication to described graphene oxide ethanol solution 2 hours, obtain the homogeneous stable graphene oxide ethanol solution; Then 50 parts of thermoplastic konjac glucomannans are added in the homogeneous stable graphene oxide ethanol solution after ultrasonic treatment, then mechanically stirred for 10 hours, After mixing and mixing, filter the solution and dry the mixture at 80°C for 3 hours; then mix the mixture with 10 parts of maleic anhydride in a high-speed mixer for 5 minutes, dry at 60°C for 8 hours, and control the temperature at 100 The blended material was melt-blended in a twin-screw extruder for 5 minutes, extruded and granulated at 1 MPa to obtain a thermoplastic konjac glucomannan / graphene oxide composite material.

Embodiment 2

[0030] Take graphene oxide 0.5g by weight, be dissolved in water, be mixed with the graphene oxide aqueous solution that concentration is 0.5g / L, then use the ultrasonic equipment that power is 600W to carry out ultrasonic treatment 3 hours to described graphene oxide aqueous solution, obtain A homogeneously stable graphene oxide aqueous solution; then add 15 parts of thermoplastic konjac glucomannan to the homogeneously stable graphene oxide aqueous solution after ultrasonic treatment, then mechanically stir for 10 hours, mix and mix, and filter solution, the mixture was dried at 90°C for 3 hours; then the mixture was stirred with 10 parts of glycerol in a high-speed mixer for 20 minutes, dried at a temperature of 50°C for 9 hours, and the blended material was placed in a double helix with temperature controlled at 120°C Melt and blend in an extruder for 10 minutes, extrude and granulate at 0.3 MPa, and obtain a thermoplastic konjac glucomannan / graphene oxide composite materia...

Embodiment 3

[0032] Take Graphene Oxide 1g by weight, be dissolved in ethanol, be mixed with the Graphene Oxide ethanol solution that concentration is 1g / L, then use the ultrasonic equipment that power is 400W to carry out ultrasonic treatment 5 hours to described Graphene Oxide ethanol solution, Obtain a homogeneous and stable graphene oxide ethanol solution; then add 30 parts of thermoplastic konjac glucomannan to the homogeneous and stable graphene oxide ethanol solution after ultrasonic treatment, then mechanically stir for 10 hours, mix and mix Finally, filter the solution, and dry the mixture at 100°C for 1 hour; then stir the mixture with 2 parts of tributyl citrate and 2 parts of polyethylene glycol in a high-speed mixer for 15 minutes, and dry at a temperature of 40°C for 10 hours, The blended material was melted and blended in a twin-screw extruder for 10 minutes under temperature control at 110° C., extruded and granulated at 1 MPa to obtain a thermoplastic konjac glucomannan / gra...

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Abstract

The invention discloses a thermoplastic konjac glucomannan/graphene oxide compound material and a preparation method thereof. The invention is characterized in that the compound material comprises the following components according to parts by weight: 1 to 99 parts of thermoplastic konjac glucomannan, 0.001 to 2 parts of graphene oxide, 0 to 10 parts of cross-linking agent and 0 to 10 parts of plasticizing agent; and the preparation method comprises the following steps of: proportioning; adding the thermoplastic konjac glucomannan into an ethanol or water solution of the graphene oxide, stirring for 5 to 10 hours, filtering and drying solid substances; then, drying after stirring and mixing with the cross-linking agent and the plasticizing agent in a mixing machine evenly; and afterwards, placing into a double-screw extrusion machine, extruding after carrying out melt blending at the temperature of 100 to 140 DEG C for 5 to 15 minutes, and granulating so as to prepare the compound material. The compound material has favorable processing performance, has excellent adsorbability, thermal stability and mechanical toughness, can be biologically degraded, can be regenerated, has no pollution to the environment and can be widely applied to the fields of chemical engineering, medicine, environmental protection, capital construction and the like.

Description

technical field [0001] The invention belongs to a composite material and a preparation method thereof, and relates to a thermoplastic konjac glucomannan / graphene oxide composite material and a preparation method thereof. The thermoplastic konjac glucomannan / graphene oxide composite material provided by the invention has excellent adsorption, thermal stability and mechanical toughness, and is biodegradable, renewable, and environmentally friendly, and can be used as a flame-retardant material and a structural material , Adsorption materials are widely used in chemical industry, medicine, environmental protection, machine construction and other fields. Background technique [0002] Globally, more than 200 million tons of plastic are produced for human consumption each year. Synthetic polymer materials have become an indispensable part of industrial production and daily life due to their excellent durability, medium resistance, high strength and easy processing. The increasin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/02C08K9/00C08K3/04C08F251/00C08B37/00
Inventor 竹文坤罗学刚段涛张磊吴凡
Owner SOUTHWEAT UNIV OF SCI & TECH
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