Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Antistatic and biodegradable aliphatic-aromatic copolyester nano composite material and preparation method thereof

A nanocomposite material and biodegradation technology, applied in the field of aliphatic-aromatic copolyester nanocomposite materials and their preparation, can solve the problems of inability to obtain mechanical properties and electrical conductivity, and achieve good biodegradability and good mechanical properties. and electrical properties, the effect of broad application prospects

Inactive Publication Date: 2020-02-11
RACHEM CHINA CO LTD +1
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the keys to the preparation of carbon nanotube / polymer composites lies in the good dispersion of carbon nanotubes in the polymer matrix. It is difficult to obtain nanoscale dispersion of carbon nanotubes in the matrix by traditional mechanical blending methods, so that it is impossible to obtain Ideal mechanical properties and electrical conductivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Put 2g of carbon nanotubes into 500ml of a mixed liquid of concentrated nitric acid (65%) and concentrated sulfuric acid (98%) with a volume ratio of 3:2, disperse by ultrasonic at 50KHZ for 60 minutes, then magnetically stir at 30°C for 5 hours, and cool After that, it was repeatedly diluted with distilled water, washed, and filtered until neutral. Dry in a vacuum oven at 110° C. for 12 hours to obtain carboxylated carbon nanotubes. Carboxylated carbon nanotubes were mixed with 20 g of thionyl bromide at 95° C. to disperse by ultrasonication at 100 KHZ for 120 minutes, and then washed with distilled water until neutral to obtain acyl chloride carbon nanotubes. Dissolve acyl chloride carbon nanotubes and 20g polyethylene adipate in 2000g chloroform, mix at 60°C, disperse with ultrasound at 100KHZ for 300 minutes, filter and then wash with distilled water until neutral to obtain hydroxylated modified carbon nanotubes.

[0068] 2 g of hydroxylated modified carbon nanotub...

Embodiment 2

[0070] Put 5g of carbon nanotubes into 500ml of a mixed liquid of concentrated nitric acid (65%) and concentrated sulfuric acid (98%) with a volume ratio of 3:2, disperse by ultrasonic at 50KHZ for 60 minutes, then magnetically stir at 30°C for 25 hours, and cool After that, it was repeatedly diluted with distilled water, washed, and filtered until neutral. Dry in a vacuum oven at 100° C. for 5 hours to obtain carboxylated carbon nanotubes. Mix carboxylated carbon nanotubes with 100 g of thionyl chloride at 95° C. and disperse by ultrasonication at 100 KHZ for 120 minutes, and then wash with distilled water until neutral to obtain acyl chloride carbon nanotubes. Dissolve acyl chloride carbon nanotubes and 100g polybutylene adipate in 5000g chloroform, mix at 55°C, disperse with ultrasound at 100KHZ for 300 minutes, filter and then wash with distilled water until neutral to obtain hydroxylated modified carbon nanotubes.

[0071] 5 g of hydroxylated modified carbon nanotubes an...

Embodiment 3

[0073] Put 15g of carbon nanotubes into 500ml of a mixed liquid of concentrated nitric acid (65%) and concentrated sulfuric acid (98%) with a volume ratio of 3:2, disperse by ultrasonic at 80KHZ for 60 minutes, then magnetically stir at 30°C for 5 hours, and cool After that, it was repeatedly diluted with distilled water, washed, and filtered until neutral. Dry in a vacuum oven at 110° C. for 12 hours to obtain carboxylated carbon nanotubes. Mix 15g of carboxylated carbon nanotubes with 1000g of thionyl chloride at 95°C and disperse by ultrasonication at 100KHZ for 120 minutes, then wash with distilled water until neutral to obtain acyl chloride carbon nanotubes. Dissolve 15g of acyl chloride carbon nanotubes and 300g of polyethylene adipate in 15,000g of chloroform, mix at 60°C, disperse with ultrasound at 100KHZ for 300 minutes, filter and then wash with distilled water until neutral to obtain hydroxylated modified carbon nanotubes.

[0074] 1.5 g of hydroxylated modified c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Conductivityaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an antistatic and biodegradable aliphatic-aromatic copolyester nano composite material and a preparation method thereof. In the esterification process, hydroxylation modified carbon nanotubes are sufficiently mixed with 1,4-butanediol, adipic acid and terephthalic acid are added to the system for in-situ polymerization, and finally a polycondensation reaction is carried outto prepare the antistatic and biodegradable aliphatic-aromatic copolyester nano composite material. Compared with a method that a nano filler is directly added in the polyester processing process andcommixing is performed in the prior art, the preparation method adopts a mode of in-situ polymerization, so that a copolyester is subjected to chain propagation on the surfaces of the hydroxylation modified carbon nanotubes, and the carbon nanotubes have dispersibility of a nano scale in the copolyester. After 0.5-5% of the carbon nanotubes with dispersibility of the nano scale are added to a reinforcement, the composite material has good antistatic performance and mechanical properties, and meanwhile, due to biodegradability of a polyadipic acid / terephthalic acid / butanediol copolyester matrix of the composite material, the composite material has broad application prospects in environment-friendly degradable toys, antistatic packaging films and other fields.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to an antistatic biodegradable aliphatic-aromatic copolyester nanocomposite material and a preparation method thereof. Background technique [0002] In recent years, technologies related to biodegradable plastics have developed rapidly, and a large number of biodegradable plastics have been put into mass production. Common biodegradable plastics are mainly biodegradable polyesters, such as polybutylene terephthalate-adipate, polylactic acid, polyesteramide and polycaprolactone / blend, polybutylene succinate Ester / caproate, polyhydroxybutyrate / valerate, polyvinyl succinate, etc. These biodegradable plastics have good ductility and are widely used in packaging, disposable tableware and agricultural mulch. However, due to the high resistivity, low modulus and strength of biodegradable plastics, their application range is greatly limited. In order to meet the app...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G63/183C08G63/78C08K9/04C08K9/02C08K3/04B65D65/46
CPCC08G63/183C08G63/78C08K9/04C08K9/02C08K3/041B65D65/466C08K2201/001Y02W90/10
Inventor 寇雪晨侯远杨吴开建赵燕超董栋张宁
Owner RACHEM CHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com