Unlock instant, AI-driven research and patent intelligence for your innovation.
Magnetic polyamide, preparation method thereof and magnetic fibers obtained by using magnetic polyamide
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of polyamide fibers and polyamides, applied in the field of preparation of magnetic polyamides and magnetic polyamide fibers
Pending Publication Date: 2020-12-01
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Studies using flake magnetic particles have not been reported
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
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment approach
[0040] According to a preferred embodiment of the present invention, the magnetic particles are flaky magnetic particles, preferably composed of ferricoxide, ferricoxide, ferrousoxide, or a mixture thereof.
[0041] In a further preferred embodiment, the flaky magnetic particles are obtained as follows:
[0042] Step a, adding a monovalent metal salt into an alcoholic solvent to form a solution 1;
[0044] Step c, adding solution one to solution two and stirring, and then reacting under a protective atmosphere to obtain the flaky magnetic particles.
[0045] In a further preferred embodiment, the magnetic particles are organically modified magnetic particles, preferably organically modified with a coupling agent, and then subjected to post-treatments such as separation and washing, preferably the coupling agent is selected from silane One or more of coupling agents, titanate coupling...
Embodiment 1
[0107] Embodiment 1 Preparation of flaky magnetic particles
[0111] Add solution 1 to solution 2 under stirring and stir for 5 minutes, then stir and react at 180° C. for 52 hours, collect the product, perform centrifugation, wash with deionized water and alcohol three times, and obtain the flaky magnetic particles.
[0112] The flaky magnetic particle that embodiment 1 obtains carries out scanning electron microscope detection, and the result is as follows figure 1 shown, from figure 1 It can be seen from the figure that the obtained magnetic particles are in the shape of flakes, and the upper right illustration is a partially enlarged view, and it can be seen that the thickness o...
Embodiment 2
[0113] Example 2 Organically Modified Flaky Magnetic Particles
[0114] Put 100 g of the flaky magnetic particles prepared in Example 1 into an ethanol solution containing 0.8 g of γ-methacryloxypropyltrimethoxysilane, react at 60° C. for 3 hours, and then separate and wash with ethanol.
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
Login to View More
Abstract
The invention discloses magnetic polyamide, a preparation method thereof and magnetic fibers obtained by using the magnetic polyamide. The preparation method comprises the following steps: firstly obtaining flaky magnetic particles, then carrying out organic modification on the flaky magnetic particles to obtain organic modified flaky magnetic particles, and then carrying out melt blending on theorganic modified flaky magnetic particles and polyamide or carrying out in-situ polymerization on the organic modified flaky magnetic particles and a polyamide monomer to obtain the magnetic polyamide; meanwhile, carrying out melt spinning on the magnetic polyamide to obtain the magnetic fibers. The magnetic polyamide and the magnetic fibers obtained according to the method have very excellent electromagnetic shielding property and mechanical property.
Description
technical field [0001] The invention relates to the field of magnetic polyamide, in particular to the preparation of magnetic polyamide and magnetic polyamide fiber. Background technique [0002] Magnetic composite materials are widely used in electromagnetic shielding, electronic devices, information storage, sensors, health care and other fields. Magnetic fibers can be used in smart fibers, military protective clothing, etc. At present, there are a lot of research on magnetic fibers, which are generally prepared by melt blending and spinning polymers and magnetic particles, and magnetic particles are also dispersed in the system for in-situ copolymerization. However, most of the magnetic particles used in these magnetic materials are Natural magnetic powder with irregular shape, a small amount of magnetic microspheres used to prepare magnetic fibers. [0003] Among these materials, magnetic particles are used in large amounts. Studies using flake magnetic particles have...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More