Graphene magnetic injection molding masterbatch for nylon electrical appliance plastics, and preparation method thereof

A technology of electrical plastics and graphene, applied in the field of plastic masterbatch, can solve the problems of poor compatibility, poor fluidity and magnetic properties, insufficient plastic and magnetic products to meet the shape, size, model, intelligence and other problems, and achieve melt flow. Good performance and improved dispersibility

Inactive Publication Date: 2019-02-01
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves how well magnetism works on polyamide materials used in electric or electronic devices like home appliance components such as switches. It achieves this through adding nanoparticles made from certain types of nanoscopic iron oxides (irons) onto the surface of these polymers. These added fine metal particles improve their ability to absorb external energy when exposed to an alternating current field. They also enhance flowability compared to traditional methods where they were mixed together beforehand. Overall, it allows manufacturers to create highly functional parts without compromising quality control standards.

Problems solved by technology

This patented describes various ways to improve the quality of metal composites made from magnelectroplasty metals. These techniques involve mixing certain ingredients together at specific temperatures beforehand, create special structures called magnetospherulanomains that enhance the strength and durability of these alloys while also improving their overall function capabilities such as magnectic force and electric conductivity. However, current manufacturing processes often result in impurities when combining multiple components like ferroelectrics and carbon black maghemogens onto each component separately without adequate interaction between them. Additionally, it may require complicated treatments on both surfaces and interfaces leading to imperfections in final product qualification.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add sulfonated graphene, iron salt and ferrous salt to deionized water, and prepare graphene-Fe by hydrothermal reaction in lye 3 o 4 Nanocomposite magnetic particles;

[0030] The iron salt is ferric chloride; the ferrous salt is ferrous chloride; the temperature of the hydrothermal reaction is 160°C, the pressure is 1.6MPa, and the time is 5h;

[0031] Wherein: 21 parts by weight of sulfonated graphene, 17 parts by weight of iron salt, 15 parts by weight of ferrous chloride, 62 parts by weight of deionized water;

[0032] (2) First, the graphene-Fe obtained in step (1) 3 o 4 Nanocomposite magnetic particles are surface treated with a coupling agent, then monocarboxyl-terminated nylon 6 and dispersant are added, mixed evenly, and then melted and extruded in an extruder to obtain a nylon 6 melt dispersed with nanocomposite magnetic particles; The coupling agent is isopropyl tris (dioctyl phosphate acyloxy) titanate; the dispersant is sodium methylene bis-naphthalen

Embodiment 2

[0037](1) Add sulfonated graphene, iron salt and ferrous salt to deionized water, and prepare graphene-Fe by hydrothermal reaction in lye 3 o 4 Nanocomposite magnetic particles;

[0038] The iron salt is ferric bromide; the ferrous salt is ferrous chloride; the temperature of the hydrothermal reaction is 150°C, the pressure is 1MPa, and the time is 7h;

[0039] Wherein: 20 parts by weight of sulfonated graphene, 16 parts by weight of iron salt, 15 parts by weight of ferrous chloride, 64 parts by weight of deionized water;

[0040] (2) First, the graphene-Fe obtained in step (1) 3 o 4 Nanocomposite magnetic particles are surface treated with a coupling agent, then monocarboxyl-terminated nylon 6 and dispersant are added, mixed evenly, and then melted and extruded in an extruder to obtain a nylon 6 melt dispersed with nanocomposite magnetic particles; The coupling agent is isopropyl dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate; the dispersant is sodium methylene bi

Embodiment 3

[0045] (1) Add sulfonated graphene, iron salt and ferrous salt to deionized water, and prepare graphene-Fe by hydrothermal reaction in lye 3 o 4 Nanocomposite magnetic particles;

[0046] The iron salt is ferric sulfate; the ferrous salt is ferrous chloride; the temperature of the hydrothermal reaction is 170°C, the pressure is 2MPa, and the time is 5h;

[0047] Wherein: 22 parts by weight of sulfonated graphene, 19 parts by weight of iron salt, 14 parts by weight of ferrous chloride, 59 parts by weight of deionized water;

[0048] (2) First, the graphene-Fe obtained in step (1) 3 o 4 Nanocomposite magnetic particles are surface treated with a coupling agent, then monocarboxyl-terminated nylon 6 and dispersant are added, mixed evenly, and then melted and extruded in an extruder to obtain a nylon 6 melt dispersed with nanocomposite magnetic particles; The coupling agent is bis(dioctyloxypyrophosphate) ethylene titanate; the dispersant is sodium methylene bis-naphthalene sulfon

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PUM

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Abstract

The invention relates to the field of plastic masterbatch, and discloses a graphene magnetic injection molding masterbatch for nylon electrical appliance plastics, and a preparation method thereof. The preparation process comprises: (1) adding sulfonated graphene, an iron salt and a ferrous salt to deionized water, and carrying out a hydrothermal reaction to obtain graphene-Fe3O4 nanometer composite magnetic micro-particles; (2) carrying out surface treatment on the composite magnetic micro-particles, adding nylon 6 and a dispersant, and carrying out melt extrusion to obtain a nylon 6 melt; and (3) mixing melt, polyamide-amine, adipic acid and hexanediamine, carrying out a condensation polymerization, carrying out pressure relief, drying, and crushing to prepare the graphene magnetic injection molding masterbatch. According to the present invention, the nanometer composite magnetic micro-particles are coated with the hyperbranched nylon 6 with characteristics of good compatibility withthe nylon injection molding matrix and high fluidity, such that the dispersibility of the magnetic powder in the nylon is substantially improved, the melt has good fluidity, the processing performance is excellent, and the method is suitable for popularization and application.

Description

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Claims

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Application Information

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Owner CHENDU NEW KELI CHEM SCI CO LTD
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