A kind of rosin-based silicon-phosphorus synergistic flame retardant, its preparation method and polyurethane foam prepared therefrom

A polyurethane foam, synergistic flame retardant technology, applied in the field of polyurethane foam, can solve the problems of uneven distribution of flame retardants, limited improvement of flame retardant performance, accelerated combustion speed, etc., to achieve enhancement and stability and flame retardant performance, high thermal stability and flame retardancy, the effect of enhancing mechanical properties

Active Publication Date: 2021-07-09
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while rigid polyurethane foam brings convenience to people, there are also some hidden dangers. Since rigid polyurethane foam contains a large amount of carbon and hydrogen elements in the molecular chain segment, it is extremely easy to burn in the air and has flammable characteristics. In addition, its porous structure has a large specific surface area, which will greatly accelerate the burning speed and pose a threat to people's lives and safety.
[0003] At present, the flame retardant products of modified polyurethane foam are mainly phosphorus-based, nitrogen-based, and silicon-based flame retardants, but there are the following problems: 1) The improvement of flame retardant performance is limited; 2) The amount of flame retardant added is large; 3 ) lead to a decline in the mechanical properties of the material; 4) poor compatibility with the matrix material, uneven distribution of the flame retardant, and as time goes by, the flame retardant overflows the material

Method used

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  • A kind of rosin-based silicon-phosphorus synergistic flame retardant, its preparation method and polyurethane foam prepared therefrom
  • A kind of rosin-based silicon-phosphorus synergistic flame retardant, its preparation method and polyurethane foam prepared therefrom
  • A kind of rosin-based silicon-phosphorus synergistic flame retardant, its preparation method and polyurethane foam prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take by weighing 15 parts by weight of fumopimaric acid and 30 parts by weight of triethoxy (3-epoxypropyloxypropyl) silane (KH-561) in a three-necked flask, add 300 parts by weight of absolute ethanol solvent, under nitrogen Under the conditions of protection and reflux, heat to 90° C., react for 6 hours, and then remove ethanol by rotary evaporation to obtain fumapimaric acid-modified silicone polyol (FASO) in light yellow viscous shape. Weigh 30 parts by weight of fumopimaric acid-modified silicone polyol and dissolve it in 210 parts by weight of methylene chloride in a three-necked flask, weigh 5.1 parts by weight of DOPO (9,10-dihydro-9-oxa-10-phosphorus Heterophenanthrene-10-oxide) and 2.7 parts by weight of triethylamine were dissolved in 30 parts by weight of dichloromethane, and the solution was added to the above-mentioned three-necked flask. Under the condition of an ice bath, the temperature of the system was reduced to between minus 10°C and minus 5°C, and ...

Embodiment 2

[0040]Take by weighing 15 parts by weight of fumopimaric acid and 30 parts by weight of triethoxy (3-epoxypropyloxypropyl) silane (KH-561) in a three-necked flask, add 300 parts by weight of absolute ethanol solvent, under nitrogen Under the conditions of protection and reflux, heat to 90° C., react for 6 hours, and then remove ethanol by rotary evaporation to obtain fumapimaric acid-modified silicone polyol (FASO) in light yellow viscous shape. Weigh 30 parts by weight of fumopimaric acid modified silicone polyol and dissolve it in 210 parts by weight of dichloromethane in a three-necked flask, weigh 5.1 parts by weight of DOPO and 2.7 parts by weight of triethylamine and dissolve it in 30 parts by weight of dichloromethane , and the solution was added to the above-mentioned three-necked flask. Under the condition of an ice bath, the temperature of the system was reduced to between minus 10°C and minus 5°C, and 3.7 parts by weight of carbon tetrachloride was added dropwise wh...

Embodiment 3

[0043] Take by weighing 15 parts by weight of fumopimaric acid and 30 parts by weight of triethoxy (3-epoxypropyloxypropyl) silane (KH-561) in a three-necked flask, add 300 parts by weight of absolute ethanol solvent, under nitrogen Under the conditions of protection and reflux, heat to 90° C., react for 6 hours, and then remove ethanol by rotary evaporation to obtain fumapimaric acid-modified silicone polyol (FASO) in light yellow viscous shape. Weigh 30 parts by weight of fumopimaric acid modified silicone polyol and dissolve it in 210 parts by weight of dichloromethane in a three-necked flask, weigh 5.1 parts by weight of DOPO and 2.7 parts by weight of triethylamine and dissolve it in 30 parts by weight of dichloromethane , and the solution was added to the above-mentioned three-necked flask. Under the condition of an ice bath, the temperature of the system was reduced to between minus 10°C and minus 5°C, and 3.7 parts by weight of carbon tetrachloride was added dropwise w...

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PUM

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Abstract

The invention discloses a rosin-based silicon-phosphorus synergistic flame retardant, the structural formula of which is: etc. The present invention realizes the organic combination of silicon-phosphorus elements through the chemical reaction of rosin and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and under the action of synergistic mechanism, the preparation The obtained flame retardant has higher thermal stability and flame retardancy; the introduction of rosin-based silicon-phosphorus synergistic flame retardant enhances the stability and flame retardancy of rigid foam polyurethane, and also enhances the rigid foam polyurethane Excellent mechanical properties, meet the application requirements of building insulation boards, box packaging and other fields, and the dosage is small, the introduction of polyurethane through chemical combination, no flame retardant overflow phenomenon, good flame retardant stability.

Description

technical field [0001] The invention relates to a rosin-based silicon-phosphorus synergistic flame retardant, a preparation method thereof and a polyurethane foam prepared therefrom, belonging to the field of flame retardant materials. Background technique [0002] As one of the important polymers, polyurethane foam is widely used in the fields of pipelines, building insulation, and box transportation because of its excellent thermal insulation properties, high compressive strength, and strong solvent resistance. However, while rigid polyurethane foam brings convenience to people, there are also some hidden dangers. Since rigid polyurethane foam contains a large amount of carbon and hydrogen elements in the molecular chain segment, it is extremely easy to burn in the air and has flammable characteristics. In addition, its porous structure has a large specific surface area, which will greatly accelerate the burning speed and pose a threat to people's lives and safety. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/6574C08K5/5435C08G18/48C08G101/00
CPCC07F9/657172C08G18/48C08K5/5435
Inventor 刘鹤王诗博王丹商士斌宋湛谦
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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