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Preparation method of synergistic flame-retardant polyol and application

A synergistic flame retardant and polyol technology, applied in the fields of reactive flame retardants, polymer chemistry, and building insulation materials, can solve the problems that the flame retardant ability cannot meet the use requirements, and achieve low raw material costs, mild reaction conditions, and technical Proven and Reliable Effects

Inactive Publication Date: 2015-12-23
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The flame retardant ability of polyurethane insulation materials prepared by a single flame retardant element often cannot meet the requirements of use. Therefore, research and development of reactive flame retardants with synergistic flame retardant effects and industrial application value are important for the development of flame retardant polyurethane technology. of great significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 A kind of preparation method of synergistic flame retardant polyol

[0046] 1) Add 100g of phosphorus pentoxide to the reactor, start stirring, add 22g of water within 4min, raise the temperature, and keep the temperature at 70-80℃ for 30min;

[0047] 2) Add 600g of epichlorohydrin within 10min, add 2.0g of catalyst tetraethylammonium bromide, reflux for 1h, raise the reaction temperature to 130-140°C, keep warm for 2h, add 8g of paraformaldehyde, isocyanuric acid 5g and melamine 5g, keep warm for 2h;

[0048] 3) At this temperature, the gauge pressure was -0.1MPa and vacuum distillation was carried out for 1 hour, cooled and discharged to obtain a synergistic flame-retardant polyol with a mass yield of 94%, which was a reddish-brown transparent liquid. The synergistic flame-retardant polyol has an acid value of 5.3 mgKOH / g and a viscosity of 5607 mPa.s.

Embodiment 2

[0049] Embodiment 2 A kind of preparation method of synergistic flame retardant polyol

[0050] 1) Add 100g of phosphorus pentoxide to the reactor, start stirring, add 28g of water within 6min, raise the temperature, and keep the temperature at 70-80℃ for 60min;

[0051] 2) Add 450g of epichlorohydrin within 15min, add 1.8g of catalyst benzyltriethylammonium chloride, reflux for 1h, raise the reaction temperature to 130-140℃, keep warm for 2h, add 12g of paraformaldehyde, iso Cyanuric acid 9g and melamine 7g, heat preservation reaction 2h;

[0052] 3) At this temperature, the gauge pressure was -0.1MPa and vacuum distillation was carried out for 1 hour, cooled and discharged to obtain a synergistic flame-retardant polyol with a mass yield of 93%, which was a reddish-brown transparent liquid. The synergistic flame-retardant polyol has an acid value of 8.4 mgKOH / g and a viscosity of 4590 mPa.s.

Embodiment 3

[0053] Embodiment 3 A kind of preparation method of synergistic flame retardant polyol

[0054] 1) Add 100g of phosphorus pentoxide to the reactor, start stirring, add 25g of water within 5min, raise the temperature, and keep the temperature at 70-80℃ for 45min;

[0055] 2) Add 300g of propylene oxide within 13min, add 1.9g of catalyst benzyltrimethylammonium chloride, reflux for 1h, increase the reaction temperature to 130-140℃, keep warm for 2h, add 10g of paraformaldehyde, isocyanide 7g of uric acid and 7g of melamine, heat preservation reaction for 2h;

[0056] 3) At this temperature, the gauge pressure was -0.1MPa and vacuum distillation was carried out for 1 hour, cooled and discharged to obtain a synergistic flame-retardant polyol with a mass yield of 93%, which was a reddish-brown transparent liquid. The synergistic flame-retardant polyol has an acid value of 7.2 mgKOH / g and a viscosity of 4354 mPa.s.

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Abstract

The invention discloses a preparation method of synergistic flame-retardant polyol and application and belongs to the technical field of high-molecular chemistry, reaction-type flame-retardant agent and building insulation materials. The synergistic flame-retardant polyol is prepared by the following steps: using phosphorus pentoxide to react with water, generating phosphoric acid, and then reacting with epichlorohydrin, paraformaldehyde, isocyanuric acid and melamine. The synergistic flame-retardant polyol is used for preparing flame-retardant polyurethane foam materials.

Description

technical field [0001] The invention relates to a preparation method and application of a synergistic flame-retardant polyol, in particular to a preparation method of a nitrogen-phosphorus synergistic flame-retardant polyol for preparing flame-retardant polyurethane foam, which belongs to polymer chemistry and reactive flame retardants , Technical field of building thermal insulation materials. Background technique [0002] Due to its excellent performance, polyurethane polymer materials have been widely used in many technical fields, such as construction, transportation, furniture, electrical appliances and other industries. The oxygen index of ordinary polyurethane materials is only 17%, which is a flammable material, and when the material is burned, it releases a large amount of toxic smoke, which brings great hidden dangers to people's lives and property safety. Adding flame retardants to raw materials is the most effective way to improve the flame retardancy of polyure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/26C08G18/50C08G18/76C08G18/18C08J9/08C08G101/00
Inventor 王志玲王刚匡轩魏琴吴丹
Owner UNIV OF JINAN
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