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Flame-retardant smoke-suppression soft polyurethane foam composite material and preparation method thereof

A technology of soft polyurethane and composite materials, applied in the direction of coating, etc., can solve the problems such as inability to achieve the effect, achieve the effects of delaying the transfer of substances and heat, easy to obtain raw materials, and simple preparation methods

Active Publication Date: 2019-12-31
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some researchers have used zeolite-like imidazolate framework materials to prepare nanocomposite flame retardants to improve the flame retardancy of polymer materials and achieved certain results. However, they usually cannot achieve good results when used alone.

Method used

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  • Flame-retardant smoke-suppression soft polyurethane foam composite material and preparation method thereof
  • Flame-retardant smoke-suppression soft polyurethane foam composite material and preparation method thereof
  • Flame-retardant smoke-suppression soft polyurethane foam composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of flame-retardant and smoke-suppressing flexible polyurethane foam composites

[0023] a) Preparation of water-soluble phenolic resin solution: molten phenol and formaldehyde aqueous solution are mixed in a molar ratio of 1:2, stirred mechanically, then weighed NaOH according to 2% of the total mass of phenol and formaldehyde, reacted at 65°C for 50min, and raised the temperature to Continue to react at 85°C for 30 minutes to obtain a water-soluble phenolic resin; dissolve the water-soluble phenolic resin in deionized water, adjust the pH value with 1mol / L NaOH solution so that the pH value of the solution is 9.0, stir for 20 minutes, and prepare a 0.5wt% water-soluble phenolic resin solution;

[0024] Preparation of Co-ZIF-L suspension: Co(NO 3 )·6H 2 O was dissolved in deionized water to prepare a solution A with a concentration of 0.034mol / L, and then dimethylimidazole was dissolved in deionized water to prepare a solution B with a concentration of ...

Embodiment 2

[0032] 1. Preparation of flame-retardant and smoke-suppressing flexible polyurethane foam composites

[0033] a) Preparation of water-soluble phenolic resin: molten phenol and formaldehyde aqueous solution were mixed at a molar ratio of 1:2.5, mechanically stirred, and then NaOH was weighed according to 2% of the total mass of phenol and formaldehyde. After reacting at 65°C for 50 minutes, raise the temperature to 85°C and continue the reaction for 30 minutes to obtain a water-soluble phenolic resin; dissolve the water-soluble phenolic resin in deionized water, adjust the pH value with 1mol / L NaOH solution so that the pH value of the solution is 10.0, and stir 20min, be prepared into 0.75wt% water-soluble phenolic resin solution;

[0034] Preparation of Co-ZIF-L suspension: Co(NO 3 ) 2 ·6H 2 O was dissolved in deionized water to prepare a solution A with a concentration of 0.034mol / L, and then dimethylimidazole was dissolved in ionized water to prepare a solution B with a c...

Embodiment 3

[0043] 1. Preparation of flame-retardant and smoke-suppressing flexible polyurethane foam composites

[0044] a) Preparation of water-soluble phenolic resin solution: molten phenol and formaldehyde aqueous solution are mixed in a molar ratio of 1:3, stirred mechanically, and then weighed NaOH according to 2% of the total mass of phenol and formaldehyde, reacted at 65°C for 50min, and raised the temperature to Continue to react at 85°C for 30 minutes to obtain a water-soluble phenolic resin; dissolve the water-soluble phenolic resin in deionized water, adjust its pH value with 1mol / L NaOH solution so that the pH value of the solution is 9.5, stir for 20 minutes, and prepare a phenolic resin with a mass fraction of 1 wt%. Water-soluble phenolic resin solution;

[0045] Preparation of Co-ZIF-L suspension: Co(NO 3 ) 2 ·6H 2 O was dissolved in deionized water to prepare a solution A with a concentration of 0.034mol / L, and then a certain mass of dimethylimidazole was dissolved in...

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Abstract

The invention belongs to the field of flame-retardant smoke-suppression materials, and particularly relates to a flame-retardant smoke-suppression soft polyurethane foam composite material which is prepared by assembling water-soluble phenolic resin and a ZIFs nano material on the surface of soft polyurethane foam under electrostatic interaction. The invention further relates to a preparation method of the composite material. According to the preparation method, the water-soluble phenolic resin and Co-ZIF-L are used for forming a flame-retardant coating layer on the surface layer of the soft polyurethane foam in a self-assembly mode, on one hand, a carbon layer formed in the combustion process of the phenolic resin has a certain physical barrier effect; and on the other hand, the Co-ZIF-Lnanosheet has a lamellar barrier effect, meanwhile, the nanosheet contains Co element, and Co3O4 generated in the combustion process is capable of catalyzing o form more compact carbon layers, so thatthe flame-retardant and smoke-suppressing effects are achieved. The preparation method provided by the invention has the advantages of easily available raw materials, simple method, greenness and environmental protection.

Description

technical field [0001] The invention belongs to the field of flame-retardant and smoke-suppressing materials, in particular to a flame-retardant and smoke-suppressing soft polyurethane foam composite material and a preparation method thereof. Background technique [0002] Flexible polyurethane foam (FPUF) has many excellent properties such as light weight, softness, breathability, good resilience, and sound insulation, and is widely used in industrial and civil fields. However, FPUF has a porous structure and is highly flammable. The oxygen index of FPUF without flame retardant treatment is only about 18%; the low density and high porosity make it have good air circulation, and it can pass through the cells when burning Oxygen is continuously supplied, so it is easy to burn and drip; in addition, a large amount of toxic fumes, such as CO, HCN, NO, etc., will be produced during combustion, which will bring difficulties to personnel evacuation and fire fighting. Therefore, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/40C08J9/36C08L75/04C08L61/06C08K7/26
CPCC08J9/42C08J9/40C08J9/365C08J2375/04C08J2461/06C08K7/26C08K2201/011
Inventor 徐文总陈瑞范良捷闫弘毅王海明
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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