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Preparation method of magnetic polyurethane elastic fiber

A technology of polyurethane elasticity and polyurethane, which is applied in the field of preparation of magnetic polyurethane elastic fibers, can solve problems such as scarcity, and achieve the effects of preventing magnetic powder agglomeration, good fiber safety and environmental protection, and excellent magnetic properties

Active Publication Date: 2019-06-28
华峰重庆氨纶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After reviewing the data, it can be found that the literature on magnetic modification of polyurethane elastomers is very rare, and there are few reports on further spinning magnetic polyurethane elastomers into polyurethane elastic fibers.

Method used

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  • Preparation method of magnetic polyurethane elastic fiber
  • Preparation method of magnetic polyurethane elastic fiber
  • Preparation method of magnetic polyurethane elastic fiber

Examples

Experimental program
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Effect test

preparation example Construction

[0019] A kind of preparation method of magnetic polyurethane elastic fiber of the present invention obtains slurry solution (auxiliary material solution) that magnetic powder is uniformly dispersed through grinding and emulsifying, and slurry solution is prepared by adding polyurethane polymer into magnetic polyurethane spinning stock solution and stock solution dry spinning Silk is made through three main processes, and its features include:

[0020] 1. The magnetic powder is iron oxide magnetic powder (γ-Fe2O3), iron oxide magnetic powder modified by methods such as doping, adsorption, infiltration, and coating of certain elements, chromium dioxide magnetic powder (CrO2), metal magnetic powder and barium iron Oxygen and other magnetic powder, iron oxide magnetic powder is preferred, and the particle size of the magnetic powder is controlled at <1um.

[0021] 2. The solvent is N,N-dimethylformamide DMF, N,N-dimethylacetamide DMAC, N,N-diethylformamide DEF and other amide homo...

Embodiment 1-3

[0042] The preparation of embodiment 1-3 experimental sample

[0043] When preparing the samples of Examples 1-3, the experimental operation method was the same as that of the comparative sample, except that a certain amount of iron oxide magnetic powder (γ-Fe2O3) was added when the emulsified slurry solution was prepared, and the addition ratio of the magnetic powder As shown in the table below:

[0044] Table 2 Experimental sample 1-3 Magnetic agent addition data table

[0045]

[0046] Wherein: A is the solid content of the polymer polymerized by RA2, that is, A is the mass sum of the following substances:

[0047] A=m PTMEG +m MDI +m UE +m UA +m CEPPA +m ST +m SPA

[0048] Each embodiment polyurethane elastic fiber physical index is listed in table 4:

[0049] Table 3 each embodiment polyurethane elastic fiber physical property index

[0050]

[0051]

[0052] As can be seen from the physical properties in Table 3, the formula of Example 2 is selected t...

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Abstract

The invention relates to a preparation method of magnetic polyurethane elastic fiber. The method comprises the steps that a magnetic slurry solution with uniformly-dispersed magnetic powder is prepared through grinding emulsification, the slurry solution is mixed into a polyurethane polymer to obtain a magnetic polyurethane spinning solution, and the spinning solution is prepared into final magnetic polyurethane elastic fiber by adopting dry method spinning, wherein the polyurethane polymer is formed by forming a prepolymer through condensation addition polymerization of polyether diol and diisocyanate and performing joint chain extension of the prepolymer, diamine and a chain terminator. The polyurethane elastic fiber prepared through the method has the good permanent magnet characteristics, the magnetic fiber is good in safety environment-friendliness, the woven fabric can regulate an in-vivo biological magnetic field, generate induction micro-current, change the cell membrane permeability, change the activity of some enzymes, enlarge blood vessels and accelerate blood flow, so that the auxiliary treatment effects of relieving pain, diminishing swelling and the like are achieved.

Description

technical field [0001] The invention relates to a preparation method of magnetic polyurethane elastic fiber. Background technique [0002] Polyurethane elastic fiber is a synthetic fiber with excellent properties such as high elongation at break, low modulus and high elastic recovery rate, and is widely used in knitted clothing, household products and other fields. With the development of the global economy and society and the increasing awareness of human living standards and safety and environmental protection, there is an increasingly strong demand for new polyurethane elastic fibers that are safe, healthy, environmentally friendly, and have special properties. [0003] Magnetic therapy is an ancient auxiliary treatment measure. There are a large number of domestic and foreign literatures to report that human beings live in the earth's magnetic field all the time. Astronauts in space may have the risk of causing space syndrome due to the separation from the earth's magnet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10
Inventor 周建军李震霄吴新桐刘珊珊
Owner 华峰重庆氨纶有限公司
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