Degradable conductive phosphorene composite material with gradient functional structure as well as preparation method and application of degradable conductive phosphorene composite material

A composite material and gradient function technology, which is applied in the field of preparation of degradable and conductive phosphorene composite materials, can solve the problems of no anisotropy, energy consumption, and limited application of materials, and achieve good biocompatibility and wide application prospects , Improve the effect of mechanical properties

Active Publication Date: 2021-02-26
RACHEM CHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The currently reported two-dimensional crystal material reinforcement that can be applied to polyester materials is mainly graphene, and there is no semiconductor band gap in the electronic structure of graphene materials. " and "off" problems, only added as a conductive filler
Graphene-based electronic devices are always in a conductive state that is always on, which will cause unnecessary energy consumption, which has many limitations in the application of electronics
At the same time, graphene also has certain biological toxicity, which greatly limits its application in biomedicine.
Conventional screw extrusion mixing or banburying reported so far cannot achieve nanoscale dispersion of two-dimensional crystal fillers, and the obtained materials have no anisotropy, which limits the application direction of composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 5 g of phosphorene and 1.5 mol of 1,4-butanediol were ultrasonically mixed for 5 hours, 0.52 mol of adipic acid was added to the mixture of phosphorene and 1,4-butanediol, and the esterification reaction was carried out at 175°C for 2 hours; then Add 0.48mol of terephthalic acid, carry out esterification reaction at 220°C for 2h to obtain an esterified product; add 0.35mmol of tetramethyl titanate and 0.6mmol of phosphorous acid and then keep absolute vacuum at 60Pa for 4h at 240°C. A phosphorene / polyadipate / butylene terephthalate composite material with uniform distribution of phosphorene was prepared. The resulting phosphorene / polyadipate / butylene terephthalate composite was hot-pressed in a mold to form a flat melt at a temperature of 150°C; a high-voltage direct current was applied to the upper and lower sides of the melt for 3 hours, and the electric field The strength is 100V / mm; after cooling, a degradable and conductive phosphorene composite material with a grad...

Embodiment 2

[0059] 1.5g phosphorene and 1.5mol 1,4-butanediol were ultrasonically mixed for 5 hours, 0.57mol adipic acid was added to the mixture of phosphorene and 1,4-butanediol, and the esterification reaction was carried out at 180°C for 2 hours; Then add 0.43mol terephthalic acid, carry out esterification reaction at 230°C for 3h to obtain the esterified product; add 0.4mmol n-tetrabutyl titanate and 0.6mmol triphenyl phosphate and then keep absolute vacuum at 60Pa for 4h at 250°C. A phosphorene / polyadipate / butylene terephthalate composite material with uniform distribution of phosphorene was obtained. The resulting phosphorene / polyadipate / butylene terephthalate composite was hot-pressed in a mold to form a flat melt at a temperature of 170°C; a high-voltage direct current was applied to the upper and lower sides of the melt for 5 hours, and the electric field The strength is 300V / mm; after cooling, a degradable and conductive phosphorene composite material with gradient functional s...

Embodiment 3

[0061] Mix 6 g of phosphorene and 2 mol of 1,4-butanediol ultrasonically for 5 hours, add 0.55 mol of adipic acid into the mixture of phosphorene and 1,4-butanediol, carry out esterification reaction at 175°C for 2 hours; then add 0.45mol of terephthalic acid was esterified at 220°C for 2.5h to obtain an esterified product; 0.45mmol of n-tetrabutyl titanate and 0.7mmol of trimethyl phosphate were added and then kept at 240°C for 4h in absolute vacuum at 60Pa. A phosphorene / polyadipate / butylene terephthalate composite material with uniform distribution of phosphorene was obtained. The obtained phosphorene / polyadipate / butylene terephthalate composite material was hot-pressed in a mold to form a flat plate melt at a temperature of 150°C; a high-voltage direct current was applied to the upper and lower sides of the melt for 4 hours, and the electric field The strength is 200V / mm; after cooling, a degradable and conductive phosphorene composite material with gradient functional str...

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Abstract

The invention discloses a degradable conductive phosphorene composite material with a gradient functional structure as well as a preparation method and application of the degradable conductive phosphorene composite material. According to the composite material, polyadipic acid/butylene terephthalate is used as a polymer matrix, phosphorene with unique semiconductor performance is used as a reinforcement; the phosphorene with the unique semiconductor performance is uniformly dispersed in the matrix by using an in-situ polymerization method, and then the phosphorene is distributed in a gradientmanner in the thickness direction by using an electric field induction method, and therefore, the composite material withgradient change conductivity is obtained. The composite material disclosed by the invention is completely biodegradable and has flexibility; in addition, due to the addition of the phosphorene, the mechanical property of the composite material is greatly improved; due to the semiconductor property gradiently changing along a thickness direction, the obvious anisotropy and the better biocompatibility of the composite material, the composite material has a wide application prospect in the aspects of flexible sensors, capacitors, nano photoelectrons, clean energy, biomedicine and the like.

Description

technical field [0001] The invention relates to the field of functional polymer materials, in particular to a preparation method and application of a degradable and conductive phosphorene composite material with a gradient functional structure. Background technique [0002] In recent years, the biodegradability of polymer copolyesters has attracted great research and attention, and a large number of copolyester biodegradable materials have been mass-produced and applied. Among them, polybutylene adipate / terephthalate has been widely used in packaging, disposable tableware and agricultural mulching film because of its good ductility. However, due to the low tensile modulus and tensile strength of poly(butylene adipate / terephthalate), and the lack of good electrical properties, its application range is greatly limited. There have been many research reports on the preparation of conductive and degradable composite materials by adding two-dimensional crystal materials including...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/02B29C43/00B29C43/52B29C71/00
CPCC08K3/02B29C43/003B29C43/52B29C71/0072B29C71/0081C08L2201/06C08L2201/04C08L2203/20C08L2203/02C08K2003/026C08K2201/001B29L2007/002C08L67/02
Inventor 寇雪晨侯远杨吴开建董栋张宁
Owner RACHEM CHINA CO LTD
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