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Process for preparing polyamide graphene composite material

A composite material and preparation technology, which is applied in the direction of single-component polyamide rayon, rayon manufacturing, conductive/antistatic filament manufacturing, etc., can solve the problems of uncontrolled polyamide water content, complicated operation steps, and product performance. Influence and other issues, to achieve the uniformity of production quality and production stability, improve the dispersion effect, improve the effect of mechanical properties

Inactive Publication Date: 2019-04-09
洪春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method solves the problem of agglomeration of tourmaline, the operation steps are more complicated, and the water content during polyamide reaction is not controlled, which affects the product performance

Method used

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  • Process for preparing polyamide graphene composite material
  • Process for preparing polyamide graphene composite material
  • Process for preparing polyamide graphene composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Pretreatment: 10 parts of graphene, 20 parts of nano-tourmaline, and 20 parts of nano-silver ions are respectively surface-treated with 1 part of silane coupling agent KH-560;

[0032] (2) Premixing: Mix the graphene treated in step (1) with functional additives, then add 1 part of polycarbodiimide UN-03, 10 parts of Tween 80 and 30 parts of o-toluenesulfonamide, and ultrasonically 50min to obtain the modified mixed solution;

[0033] (3) Melt intercalation polymerization: mix caprolactam and the modified mixed solution obtained in step (2) at a mass ratio of 100:3, react at a temperature of 210°C and a pressure of 0.1MPa for 8 hours, and then extrude and granulate to obtain graphite vinyl / polyamide composites.

Embodiment 2

[0035] (1) Pretreatment: use 1 part of titanate coupling agent TMC-201 and 0.5 parts of silane coupling agent KH with 20 parts of graphene, 30 parts of nano-tourmaline, 10 parts of nano-copper ion and 5 parts of nano-titanium ion respectively -570, 1 part of silane coupling agent KH-550, 1 part of silane coupling agent KH-550 for surface treatment;

[0036] (2) Premixing: Mix the graphene processed in step (1) with functional additives, then add 3 parts of polycarbodiimide K-1, 5 parts of sodium dodecylbenzenesulfonate and 20 parts of ethylene glycol Alcohol ester, ultrasonic 30min, obtain modified mixed solution;

[0037] (3) Melt intercalation polymerization: mix caprolactam and the modified mixed solution obtained in step (2) at a mass ratio of 100:5, react at a temperature of 250°C and a pressure of 0.05MPa for 8 hours, and then extrude and granulate to obtain graphite vinyl / polyamide composites.

Embodiment 3

[0039] (1) Pretreatment: Use 2 parts of titanate coupling agent TMC-TTS, 2 parts of silane coupling agent KH-550, and 1 part of silane respectively with 30 parts of graphene, 8 parts of nano-tourmaline, and 16 parts of nano-copper ions Coupling agent KH-560 for surface treatment;

[0040](2) Premixing: Mix the graphene treated in step (1) with functional additives, then add 5 parts of polycarbodiimide K-1, 5 parts of polyoxyethylene lauryl ether, and 5 parts of polyoxyethylene lauryl ether Alkyl ether, 50 parts of p-toluenesulfonamide and 6 parts of thiourea peroxide, and ultrasonication for 60 minutes to obtain a modified mixed solution;

[0041] (3) Melt intercalation polymerization: mix caprolactam and the modified mixed solution obtained in step (2) at a mass ratio of 100:1, react at a temperature of 240°C for 9 hours under normal pressure, and then extrude and granulate to obtain graphene / polyamide composite.

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Abstract

The invention belongs to the technical field of polyamide composite materials and relates to a process for preparing a polyamide graphene composite material. The method comprises the following steps:(1) carrying out pretreatment, namely carrying out surface treatment on graphene and functional aids by using a coupling agent respectively; (2) premixing, namely mixing the graphene treated in the step (1) with the functional aids, further adding carbodiimide, a surfactant and a solvent, and carrying out ultrasonic treatment for 30-60 minutes so as to obtain a modified mixed liquid; and 3) carrying out melt intercalation polymerization, namely mixing a polyamide monomer with the modified mixed liquid obtained in the step (2) to react for 8-10 hours, and carrying out extrusion pelletizing, thereby obtaining a graphene / polyamide composite material. By adopting the process, the functional aids are uniformly dispersed into a polyamide material, the addition amount of the functional aids is greatly reduced, and the material has excellent mechanical properties, antibacterial properties, negative oxygen ion release properties and far-infrared release properties, and has a beneficial effect on human skin health.

Description

technical field [0001] The invention belongs to the technical field of polyamide composite materials, and in particular relates to a preparation process of polyamide graphene composite materials. Background technique [0002] Polyamide, commonly known as nylon (Nylon), is a general term for polymers containing amide groups in the repeating unit of the main chain of the macromolecule. Polyamides can be prepared by ring-opening polymerization of lactams, or by polycondensation of diamines and dibasic acids. Polyamide fiber, as the first synthetic fiber to realize industrial production in the world, has excellent properties such as high strength, abrasion resistance, elastic recovery rate, and toughness, and it occupies an important position in the application of textiles. In the face of changes in chemical fiber product structure and product market demand, continuous optimization and improvement of polyamide products is required. [0003] At present, the main modification me...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/09D01F1/10C08G69/14C08G69/16C08G69/26C08G69/28
CPCD01F1/09D01F1/103D01F6/90C08G69/14C08G69/16C08G69/26C08G69/28
Inventor 洪春王潇景
Owner 洪春
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