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A kind of polyurethane fiber containing carbon-carbon double bond and preparation method thereof

A technology of polyurethane fiber and carbon-carbon double bond, applied in the field of materials, can solve problems such as difficulties and achieve the effect of small fiber diameter

Active Publication Date: 2017-06-16
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to directly introduce carbon-carbon double bonds into high molecular weight polymers because of the high reactivity of carbon-carbon double bonds
Through molecular design and synthesis process control, a polyurethane material containing carbon-carbon double bonds in the molecular structure and a specific molecular composition is obtained. This polyurethane material containing carbon-carbon double bonds is prepared by electrospinning technology to obtain ultra-fine fiber-like functional carriers. materials, there are few reports

Method used

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  • A kind of polyurethane fiber containing carbon-carbon double bond and preparation method thereof
  • A kind of polyurethane fiber containing carbon-carbon double bond and preparation method thereof
  • A kind of polyurethane fiber containing carbon-carbon double bond and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The types and proportions of raw materials are shown in Table 1.

[0051] Table 1

[0052] Material and reagent name Weight (g) Specifications and Grades Decanediol 31.4 Purity > 98% itaconic acid 19.5 Analytical pure p-Toluenesulfonic acid 0.1 Analytical pure Quinol 0.2 Analytical pure Tetrabutyl titanate 0.1 chemically pure Isophorone diisocyanate 17.8 Purity>99% 1,4-Butanediol 6.0 Analytical pure toluene 100 Analytical pure Dibutyltin dilaurate 0.1 chemically pure

[0053] Preparation of polyurethane materials containing carbon-carbon double bonds:

[0054] Weigh the measured decanediol and itaconic acid and place them in a multi-necked flask equipped with a condenser, an inert gas protection device, a thermometer and a stirrer, and pass in an inert gas to remove the air in the system before heating. React at 100°C for 6h under inert atmosphere purging, vacuumize to further r...

Embodiment 2

[0059] The types and proportions of raw materials are shown in Table 2.

[0060] Table 2

[0061] Material and reagent name Weight (g) Specifications and Grades Hexylene glycol 30.7 Purity > 98% itaconic acid 26.0 Analytical pure p-Toluenesulfonic acid 0.2 Analytical pure Quinol 0.3 Analytical pure Tetrabutyl titanate 0.1 chemically pure Isophorone diisocyanate 22.7 Purity>99% 1,4-Butanediol 7.5 Analytical pure toluene 170 Analytical pure Dibutyltin dilaurate 0.2 chemically pure

[0062] Preparation of polyurethane materials containing carbon-carbon double bonds:

[0063] Weigh the measured hexanediol and itaconic acid and place them in a multi-necked flask equipped with a condenser, an inert gas protection device, a thermometer and a stirrer. Before heating, pass in an inert gas to remove the air in the system. React at 130°C for 4h under inert atmosphere purging, vacuumize to further...

Embodiment 3

[0068] The types and proportions of raw materials are shown in Table 3.

[0069] table 3

[0070] Material and reagent name Weight (g) Specifications and Grades Butanediol 24.3 Purity > 98% itaconic acid 26.0 Analytical pure p-Toluenesulfonic acid 0.2 Analytical pure Quinol 0.3 Analytical pure Tetrabutyl titanate 0.1 chemically pure Isophorone diisocyanate 7.8 Purity>99% 1,4-Butanediol 2.6 Analytical pure toluene 70 Analytical pure Dibutyltin dilaurate 0.1 chemically pure

[0071] Preparation of polyurethane materials containing carbon-carbon double bonds:

[0072] Weigh the measured hexanediol and itaconic acid and place them in a multi-necked flask equipped with a condenser, an inert gas protection device, a thermometer and a stirrer. Before heating, pass in an inert gas to remove the air in the system. React for 1 hour at 160° C. under inert atmosphere purging, vacuumize to further ...

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Abstract

The application discloses a polyurethane fiber and a preparation method thereof. The polyurethane fiber contains carbon-carbon unsaturated double bonds, has a diameter of 200nm to 1000nm, and a number average molecular weight of 15000 to 35000, and the mass percentage of the hard segment in the polyurethane fiber is greater than 50%. The polyurethane fiber is prepared by an electrospinning method using an organic solution A in which polyurethane containing carbon-carbon double bonds is dissolved as a raw material. The method directly uses polyurethane containing carbon-carbon double bonds to prepare superfine fibers by electrospinning, and the polyurethane fibers containing functional groups can be obtained without post-spinning modification. The polyurethane fibers obtained by this method have uniform morphology, large specific surface area, and carbon-carbon double bonds in the molecular structure, which is conducive to further modification of other functional groups, and has broad application prospects in the fields of immobilized catalysts, sensing, separation, and biomedicine .

Description

technical field [0001] The application relates to an electrospinning preparation method of polyurethane superfine fibers containing carbon-carbon double bonds, which belongs to the field of materials. Background technique [0002] Ultrafine fibers have relatively large specific surface area, excellent surface properties and good mechanical properties, such as hardness and tensile strength, so they have received extensive attention. Electrospun microfibers have a wide range of uses due to their special size and structure, such as reinforcement materials, electrode materials, nanotube templates, conductive fiber composites, as well as sensors, tissue scaffolds, catalyst or enzyme carriers, filtration and separation, etc. Functional Materials. However, many electrospun fibers lack directly available functional groups, and they need to be modified, such as plasma pretreatment, for subsequent functional modification, which not only complicates the procedure, wastes resources, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/70C08G18/68
Inventor 薛文文张立生倪金平那海宁朱锦
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI