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Flame-retardant polyurethane flexible foam plastic and preparation method thereof

A polyurethane soft foam and plastic technology, applied in fireproof coatings, alginic acid coatings, coatings, etc., can solve the problems of toxic fumes, large release, and large addition of flame retardants, etc., to delay thermal decomposition, reduce diffusion, The effect of adding a small amount of flame retardant

Inactive Publication Date: 2020-03-27
CIVIL AVIATION FLIGHT UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing polyurethane flexible foam has a large amount of flame retardant added, and the flame retardant releases a large amount of toxic fumes when the flame retardant plays a flame-retardant role, and provides a flame-retardant polyurethane flexible foam plastic and its preparation method, the present invention adopts the layer-by-layer assembly method to combine MoS 2 Nanosheets and C 60 Deposited on the surface of the polyurethane flexible foam matrix to exert the synergistic flame retardant effect of the two

Method used

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  • Flame-retardant polyurethane flexible foam plastic and preparation method thereof
  • Flame-retardant polyurethane flexible foam plastic and preparation method thereof
  • Flame-retardant polyurethane flexible foam plastic and preparation method thereof

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preparation example Construction

[0025] The preparation method of the flame-retardant flexible polyurethane foam plastic includes the following steps:

[0026] Step 1. Preparation of polyelectrolyte dispersion: add C in a mixed solvent of deionized water and absolute ethanol 60 And guar gum, ultrasonic treatment, to obtain C 60 / Guar gum dispersion; add MoS in deionized water 2 Nanosheets and sodium alginate are treated with ultrasound to prepare MoS 2 / Sodium alginate dispersion;

[0027] Step 2: Use layer-by-layer self-assembly method to prepare flame-retardant polyurethane soft foam: Before layer-by-layer self-assembly deposition, pre-foam the soft polyurethane foam in a nitric acid solution for 2-10 minutes to form a positively charged surface on the surface and extrude After too much acid solution, immerse the soft polyurethane foam into the polyacrylic acid solution and let it stand for 2-10 minutes to generate negative charge on the surface, and then alternately immerse the soft polyurethane foam into the C ...

Embodiment 1

[0036] The preparation method of the flame-retardant flexible polyurethane foam plastic includes the following steps:

[0037] (1). Preparation of polyelectrolyte dispersion: in a mixed solvent of 0.5L deionized water and 0.5L absolute ethanol, add 5.0g C 60 And 2.0g guar gum, sonicated for 20min, obtain C 60 / Guar gum dispersion. Add 5.0g MoS to 1L deionized water 2 Nanosheets and 2.0g sodium alginate, ultrasonic treatment for 20min, prepare MoS 2 / Sodium alginate dispersion.

[0038] (2). Use layer-by-layer self-assembly method to prepare flame-retardant polyurethane soft foam: before layer-by-layer self-assembly deposition, pre-foam the polyurethane foam in a 0.1mol / L nitric acid solution for 5 minutes to form a positively charged surface on its surface . After squeezing out too much acid solution, immerse the soft polyurethane foam into 1.0wt.% polyacrylic acid solution and let it stand for 5 minutes to generate negative charge on the surface. Then alternately immerse flexibl...

Embodiment 2

[0040] The preparation method of the flame-retardant flexible polyurethane foam plastic includes the following steps:

[0041] (1). Preparation of polyelectrolyte dispersion: in a mixed solvent of 0.5L deionized water and 0.5L absolute ethanol, add 5.0g C 60 And 2.0g guar gum, sonicated for 20min, obtain C 60 / Guar gum dispersion. Add 5.0g MoS to 1L deionized water 2 Nanosheets and 2.0g sodium alginate, ultrasonic treatment for 20min, prepare MoS 2 / Sodium alginate dispersion.

[0042] (2). Use layer-by-layer self-assembly method to prepare flame-retardant polyurethane soft foam: before layer-by-layer self-assembly deposition, pre-foam the polyurethane foam in a 0.1mol / L nitric acid solution for 5 minutes to form a positively charged surface on its surface . After squeezing out too much acid solution, immerse the soft polyurethane foam into 1.0wt.% polyacrylic acid solution and let it stand for 5 minutes to generate negative charge on the surface. Then alternately immerse flexibl...

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Abstract

The invention discloses a flame-retardant polyurethane flexible foam plastic and a preparation method thereof, and belongs to the technical field of flame-retardant polymer materials. A C60 / guar gum dispersion and a MoS2 / sodium alginate dispersion are prepared, and MoS2 nanosheets and C60 are deposited on the surface of a polyurethane flexible foam matrix by adopting a layer-by-layer assembling process in order to exert the synergistic flame-retardant effects of the MoS2 nanosheets and the C60. The flame-retardant polyurethane flexible foam prepared in the invention has a high fire safety performance.

Description

Technical field [0001] The invention belongs to the technical field of flame-retardant polymer materials, and specifically relates to a flame-retardant flexible polyurethane foam plastic and a preparation method thereof. Background technique [0002] Polyurethane soft foam is a kind of polyurethane foam with certain elasticity and flexibility. It is made of isocyanate and hydroxyl compound through polymerization and foaming. It has excellent properties such as low density, good resilience, sound absorption and heat preservation. It is used in furniture cushions, Seat cushion materials, sound insulation materials, shockproof materials, packaging materials and other fields have been widely used. [0003] However, flexible polyurethane foam is a kind of open-cell polymer material, which is highly flammable. During the combustion process, it will release a large amount of heat, smoke and a variety of toxic gas products, which may cause serious casualties and property losses. Tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/36C09D105/00C09D105/04C09D5/18C09D7/61C08L75/04
CPCC08J9/40C08J9/365C09D105/00C09D105/04C09D5/18C09D7/61C09D7/70C08J2375/04C08J2405/00C08J2405/04C08K2003/3009C08K2201/011C08K3/045C08K7/00C08K3/30
Inventor 智茂永郑鹏伦赵银龙高山嵩朱新华胡再银刘全义贾旭宏
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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