Preparation method of polyester-based waterproof moisture-permeable flame-retardant composite material

A flame-retardant composite material, waterproof and moisture-permeable technology, applied in chemical instruments and methods, rayon manufacturing, synthetic resin layered products, etc., can solve the problems of poor waterproof and moisture-permeable properties of polyurethane nanofiber membranes, hazards of fluorine-containing substances, Poor flame retardant performance and other problems, to achieve the effect of improving waterproof and moisture permeability, uniform and stable spinning, and improving electrical conductivity

Active Publication Date: 2022-06-24
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, studies have found that fluorine-containing substances are potentially harmful to the environment and the human body, so the preparation of fluorine-free waterproof and moisture-permeable membranes has become a current research hotspot
[0004] However, the polyurethane nanofiber membrane prepared by electrospinning still has problems such as poor waterproof and moisture permeability and poor flame retardancy.

Method used

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  • Preparation method of polyester-based waterproof moisture-permeable flame-retardant composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Preparation of ammonium polyphosphate-modified graphene oxide powder: small-sized graphene oxide was prepared by the modified Hummers method, and a 1 mg / mL graphene oxide aqueous dispersion was prepared. 0.2 g of ammonium polyphosphate and 20 µL of hydrazine hydrate were sequentially added to 100 mL of graphene oxide aqueous dispersion and reacted at 95 °C for 12 h. After the reaction, the reaction product was washed several times with deionized water until a colorless and transparent residue was obtained. Finally, ultrasonically disperse the product uniformly, and perform vacuum freeze drying to obtain ammonium polyphosphate modified graphene oxide powder;

[0028] Preparation of polyurethane spinning solution: add 0.009 g of ammonium polyphosphate modified graphene oxide powder to a mixed solution of 24.6 g of tetrahydrofuran and 8.2 g of N,N-dimethylformamide, and sonicate until ammonium polyphosphate modified graphene oxide The powder is uniformly dispersed in the ...

Embodiment 2

[0033] Preparation of ammonium polyphosphate-modified graphene oxide powder: small-sized graphene oxide was prepared by the modified Hummers method, and a 1 mg / mL graphene oxide aqueous dispersion was prepared. 0.2 g of ammonium polyphosphate and 20 µL of hydrazine hydrate were sequentially added to 100 mL of graphene oxide aqueous dispersion and reacted at 95 °C for 12 h. After the reaction, the reaction product was washed several times with deionized water until a colorless and transparent residue was obtained. Finally, ultrasonically disperse the product uniformly, and perform vacuum freeze drying to obtain ammonium polyphosphate modified graphene oxide powder;

[0034]Preparation of polyurethane spinning solution: add 0.05 g of ammonium polyphosphate modified graphene oxide powder to a mixed solution of 24.6 g of tetrahydrofuran and 8.2 g of N,N-dimethylformamide, and sonicate until ammonium polyphosphate modified graphene oxide The powder is uniformly dispersed in the mi...

Embodiment 3

[0039] Preparation of ammonium polyphosphate-modified graphene oxide powder: small-sized graphene oxide was prepared by the modified Hummers method, and a 1 mg / mL graphene oxide aqueous dispersion was prepared. 0.2 g of ammonium polyphosphate and 20 µL of hydrazine hydrate were sequentially added to 100 mL of graphene oxide aqueous dispersion and reacted at 95 °C for 12 h. After the reaction, the reaction product was washed several times with deionized water until a colorless and transparent residue was obtained. Finally, ultrasonically disperse the product uniformly, and perform vacuum freeze drying to obtain ammonium polyphosphate modified graphene oxide powder;

[0040] Preparation of polyurethane spinning solution: add 0.05 g of ammonium polyphosphate modified graphene oxide powder to a mixed solution of 24.6 g of tetrahydrofuran and 8.2 g of N,N-dimethylformamide, and sonicate until ammonium polyphosphate modified graphene oxide The powder is uniformly dispersed in the m...

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Abstract

The invention discloses a preparation method of a polyester-based waterproof moisture-permeable flame-retardant composite material. The preparation method comprises the following steps: step 1, preparing ammonium polyphosphate modified graphene oxide powder; 2, preparing a polyurethane spinning solution; step 3, preparing a polyester-based waterproof moisture-permeable flame-retardant polyurethane nanofiber membrane; step 4, preparing a hot melt adhesive net film; and 5, preparing the polyester-based waterproof moisture-permeable flame-retardant composite material. According to the invention, the problems of poor hydrophobicity and thermal stability of polyurethane are solved at the same time, and the polyester-based waterproof and moisture-permeable flame-retardant composite material with excellent waterproof, moisture-permeable, flame-retardant effects and mechanical properties is prepared. According to the preparation method, ammonium polyphosphate is used for modifying the graphene oxide to obtain the nano flame retardant, and meanwhile, after ammonium polyphosphate modification, the graphene oxide can be better dispersed in a spinning solution, so that the flame retardant property and the mechanical property of the prepared nano fiber membrane are greatly improved.

Description

technical field [0001] The invention belongs to the field of electrospinning functional materials, and in particular relates to a preparation method of a waterproof, moisture-permeable and flame-retardant material, in particular to a modified graphene oxide polyurethane waterproof, moisture-permeable and flame-retardant composite material and a preparation method thereof. Background technique [0002] Polyurethane is a green and environmentally friendly material with good air and moisture permeability, wear resistance and plasticity, and has a wide range of applications in the field of waterproof and moisture-permeable materials. However, due to the poor hydrophobicity and thermal stability of polyurethane, improving its waterproof, moisture-permeable and flame-retardant properties has become the focus of research. [0003] Many researchers have used electrospinning to prepare polyurethane nanofiber membranes. The fibers are continuously deposited and stacked on the receivin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/36B32B27/08B32B27/40B32B7/12B32B37/12B32B37/06B32B37/10D01F6/94D01F1/10D01D5/00D04H1/728D04H13/00D04H1/4326
CPCB32B5/022B32B5/02B32B5/26B32B7/12B32B37/12B32B37/06B32B37/10D01F6/94D01F1/10D01D5/0084D01D5/003D04H1/728D04H13/00D04H1/4326B32B2262/0284B32B2262/0292B32B2307/3065B32B2307/7265
Inventor 瞿建刚李瑶曹力文沈孟茹凌嘉祺
Owner NANTONG UNIVERSITY
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