Preparation method for graphene/nylon 6 nano composite material

A nanocomposite material and graphene technology, which is applied in the field of preparation of graphene/nylon 6 nanocomposite materials, can solve the problems of unfavorable large-scale preparation of graphene/nylon 6, increase in molecular weight, difficulty in polymerization, etc., and achieve large lateral size , comprehensive performance improvement, and the effect of improving compatibility

Inactive Publication Date: 2017-12-26
HANGZHOU GAOXI TECH CO LTD
2 Cites 16 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] In addition, the methods reported so far for the preparation of graphene/nylon 6 composites by in situ polymerization of graphene oxide dispersion and caprolactam are all based on the preparation process of batch reactors, and the polymerization system contains a large amount of water.
In the industry, most production lines of ...
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

Abstract

The invention relates to a preparation method for a graphene/nylon 6 nano composite material. The graphene/nylon 6 composite material is obtained by performing in-situ polymerization on pleated-sphere-shaped oxidized graphene and caprolactam. In ring opening condensation polymerization period of a caprolactam monomer, the pleated-sphere-shaped oxidized graphene is gradually dissociated into single-layer oxidized graphene sheets, the single-layer oxidized graphene sheets are reacted with nylon 6 molecules to form covalent grafting, and at the same time thermal reduction is performed on the oxidized graphene. According to the invention, just a small number of the pleated-sphere-shaped oxidized graphene is added, thus mechanical properties, high-temperature resistance and ultraviolet aging resistance of nylon 6 can be remarkably improved, dispersity of the graphene in a polymer substrate is excellent, a usage amount is less, the final product has good machinability, and industrialized multi-tow high-speed spinning can be performed; and besides, the preparation process related by the invention is simple and effective, and suitable for industrialized VK tube polymerization equipment, modification of nylon 6 polymerization equipment does not need, and therefore the preparation method provided by the invention is a production technology which extremely has market competitiveness.

Technology Topic

Image

  • Preparation method for graphene/nylon 6 nano composite material
  • Preparation method for graphene/nylon 6 nano composite material
  • Preparation method for graphene/nylon 6 nano composite material

Examples

  • Experimental program(13)

Example Embodiment

[0021] Example 1:
[0022] (1) Dry the single-layer graphene oxide dispersion by the atomization drying method to obtain pleated spherical graphene oxide. The atomization temperature is 130°C, the graphene oxide sheet size is 0.3-5 microns, and the average size is 1 micron. The oxygen ratio is 5, and the water content is less than 0.1%;
[0023] (2) Add 3.5 parts by mass of pleated spherical graphene oxide and 2 parts by mass of deionized water to 100 parts by mass of caprolactam melt, stir and mix at a high speed (400 rpm) at 80° C. to form a dispersion;
[0024] (3) Under the protection of nitrogen, put the above dispersion into the polycondensation reactor, and heat to 250-270℃, react at 0.5-1MPa for 3 hours; then react under vacuum for 4 hours to obtain a polymer melt; The polymer melt is water-cooled and pelletized to obtain a graphene/nylon 6 nanocomposite material.
[0025] High-speed spinning with this material to obtain Figure 4 Wire roll shown. Due to the high amount of graphene added, the yarn has a high degree of anti-ultraviolet performance and a very low percolation threshold.
[0026] The properties of the obtained graphene/nylon 6 nanocomposite are shown in Table 1.

Example Embodiment

[0027] Example 2:
[0028] (1) Dry the single-layer graphene oxide dispersion by the atomization drying method to obtain pleated spherical graphene oxide, the atomization temperature is 130°C, the size of the graphene oxide sheet is 1-20 microns, and the average size is 10 microns. The carbon to oxygen ratio is 4.2, and the moisture content is less than 0.1%;
[0029] (2) Add 2 parts by mass of pleated spherical graphene oxide and 2 parts by mass of deionized water to 100 parts by mass of the caprolactam melt, stir and mix at a high speed (400 rpm) at 80° C. to form a dispersion;
[0030] (3) Under the protection of nitrogen, put the above dispersion into the polycondensation reactor, and raise the temperature to 250-270℃, and react at 0.5-1MPa for 3 hours; then react under vacuum for 4 hours to obtain a polymer melt; The polymer melt is water-cooled and pelletized to obtain a graphene/nylon 6 nanocomposite material.
[0031] The properties of the obtained graphene/nylon 6 nanocomposite are shown in Table 1.

Example Embodiment

[0032] Example 3:
[0033] (1) Dry the single-layer graphene oxide dispersion by the atomization drying method to obtain pleated spherical graphene oxide, the atomization temperature is 130°C, the size of the graphene oxide sheet is 1-40 microns, and the average size is 20 microns. The carbon to oxygen ratio is 3.9, and the moisture content is less than 0.1%;
[0034] (2) Add 0.5 parts by mass of pleated spherical graphene oxide and 2 parts by mass of deionized water to 100 parts by mass of the caprolactam melt, stir and mix at a high speed (400 rpm) at 80° C. to form a dispersion;
[0035] (3) Under the protection of nitrogen, put the above dispersion into the polycondensation reactor, and raise the temperature to 250-270℃, and react at 0.5-1MPa for 3 hours; then react under vacuum for 4 hours to obtain a polymer melt; The polymer melt is water-cooled and pelletized to obtain a graphene/nylon 6 nanocomposite material.
[0036] The properties of the obtained graphene/nylon 6 nanocomposite are shown in Table 1.
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
Size1.0 ~ 20.0µm
Size1.0 ~ 40.0µm
Size20.0 ~ 50.0µm
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
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

Similar technology patents

Classification and recommendation of technical efficacy words

  • Improve compatibility
  • Good mechanical properties
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products