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Graphene oxide/aliphatic-aromatic copolyester and preparation method thereof

A graphene and aromatic technology, which is applied in the field of graphene oxide/aliphatic-aromatic copolyester and its preparation, can solve the problems of processing influence, insufficient melt strength, easy to generate static electricity, etc., and achieve good electrical conductivity, Effect of improving melt strength and improving stability

Active Publication Date: 2014-03-19
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that the storage and hydrolysis resistance of the material are not good, and the tetrabutyl titanate used as a catalyst is easy to block or even damage the equipment.
[0009] The aliphatic-aromatic copolyester produced by the above-mentioned patent is prone to static electricity in the process of blown film processing, which has an adverse effect on the processing process
[0010] In addition, the copolyester products produced by the above patents have insufficient melt strength during the film blowing process, which may easily lead to film breakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 0.05g of graphene oxide into water, and ultrasonically disperse it for 20 minutes, add 33.0g of BDO under strong stirring, raise the temperature of the solution to 155-180°C, completely distill out the water in it, and make the hydroxyl group of the aliphatic dihydric alcohol and The carboxyl group of graphene oxide reacts to obtain graphene oxide / aliphatic glycol solution;

[0045] Add 5.0g of 1,4-cyclohexanedimethanol, 25.0g of adipic acid, 35g of terephthalic acid, and 2.2g of naphthalene dicarboxylic acid into the reaction kettle. Under nitrogen protection, raise the temperature to 210°C, and add n-butyl titanate 30 mg ester, keep the temperature in the reactor at 210°C, and remove the water produced by the reaction by splitting, and judge the degree of reaction by weighing the water generated by the reaction. When the esterification rate reaches 95%, after the temperature reaches 230°C, add Triphenyl phosphate 0.02g, react for 30 minutes, then start to slowly h...

Embodiment 2

[0048] Add 0.4g of graphene oxide into water, and ultrasonically disperse for 20 minutes, add 33.0g of BDO under strong stirring, raise the temperature of the solution to 155-180°C, completely distill out the water in it, and make the hydroxyl group of the aliphatic dihydric alcohol and The carboxyl group of graphene oxide reacts to obtain graphene oxide / aliphatic glycol solution;

[0049] Add 35.0g of terephthalic acid, 34.4g of sebacic acid and 2.5g of naphthalene dicarboxylic acid into the reaction kettle, under the protection of nitrogen, raise the temperature to 210°C, add 30mg of n-butyl titanate, and maintain the temperature in the reaction kettle at 210°C At the same time, the water produced by the reaction is removed by split flow, and the degree of reaction is judged by weighing the water generated by the reaction. When the esterification rate reaches 95%, after the temperature is lowered to 230 ° C, add 0.02 g of triphenyl phosphite and react for 30 minutes. , and t...

Embodiment 3

[0052] Add 450g of graphene oxide into water, and ultrasonically disperse for 20 minutes, add 33kg of BDO under strong stirring, raise the temperature of the solution to 155-180°C, completely distill out the water in it, and make the hydroxyl group of the aliphatic dihydric alcohol and the graphite oxide The carboxyl group of ene is reacted to obtain graphene oxide / aliphatic dihydric alcohol solution;

[0053] Add 33kg of 1,4-butanediol, 4kg of 1,4-cyclohexanedimethanol, 34kg of terephthalic acid, and 2.5kg of naphthalene dicarboxylic acid into the reaction kettle, raise the temperature to 210°C under the protection of nitrogen, and add titanic acid 30g of n-butyl ester, keep the temperature in the reactor at 210°C, remove the water produced by the reaction by splitting, and judge the degree of reaction by weighing the water generated by the reaction. When the esterification rate reaches 95%, add 25kg of adipic acid, Maintain the reaction temperature at 210°C until the esterif...

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Abstract

The invention discloses graphene oxide / aliphatic-aromatic copolyester. The graphene oxide / aliphatic-aromatic copolyester comprises the following raw materials by weight: 0.06 to 0.5% of graphene oxide, 40 to 65% of aliphatic dihydric alcohol, 32 to 57% of diacid or dimethyl ester thereof, 0.01 to 0.2% of a catalyst and 0.01 to 0.18% of a stabilizing agent. A preparation method for the graphene oxide / aliphatic-aromatic copolyester comprises the following steps: pretreatment of graphene oxide; transesterification; and condensation polymerization. The prepared graphene oxide / aliphatic-aromatic copolyester has good conductivity and does not generate static electricity in the production process of a blown film; due to addition of graphene oxide, melt strength is improved, film rupture hardly occurs during processing, and stability of production of a film material is improved.

Description

technical field [0001] The invention relates to a graphene oxide / aliphatic-aromatic copolyester and a preparation method thereof. Background technique [0002] Bio-based materials refer to a new class of materials manufactured by biological, chemical and physical methods using renewable biomass, including crops, trees, other plants and their residues and inclusions as raw materials. Bio-based products mainly refer to lignocellulosic agricultural and forestry wastes such as straws other than grain, and using them as raw materials to produce environmentally friendly chemical products and green energy is the only way for human beings to achieve sustainable development. Bio-based products and green energy issues have become the forefront of the world's scientific and technological fields. [0003] It is predicted that my country's remaining recoverable oil reserves are 2.3 billion tons, which can only be exploited for 14 years. At present, most of my country's oil depends on i...

Claims

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Application Information

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IPC IPC(8): C08G63/189C08G63/183C08G63/181C08K9/04C08K3/04
Inventor 苑仁旭徐依斌李建军焦建赵巍曾祥斌夏世勇钟宇科
Owner KINGFA SCI & TECH CO LTD
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