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Preparation method and application of fire-retardant polyol

A flame retardant polyol and chemical reaction technology, which is applied in the fields of polymer chemistry, reactive flame retardants, and building insulation materials, can solve the problem that the flame retardant ability cannot meet the requirements of use, and achieves easy industrial production, low raw material cost, The effect of mild reaction conditions

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

[0006] The flame retardant ability of the polyurethane insulation material prepared by the flame retardant of a single flame retardant element often cannot meet the requirements of use. The development of polyurethane technology is of great significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 A kind of preparation method of flame retardant polyol

[0043] 1) Add 100g of phosphorus pentoxide to the reactor, start stirring, add 25g of water within 4-6min, raise the temperature, and keep the temperature at 70°C for 30min;

[0044] 2) Add 420g of epichlorohydrin within 10min, add 1.8g of catalyst tetraethylammonium bromide, reflux reaction for 1h, raise the reaction temperature to 130°C, keep warm for 2h; add 9g of paraformaldehyde and 11g of melamine, keep warm for reaction 2h;

[0045] 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 flame-retardant polyol; the flame-retardant polyol was a reddish-brown transparent liquid with a mass yield of 94%, The acid value is 7.1mgKOH / g, and the viscosity is 4154mPa.s.

Embodiment 2

[0046] Embodiment 2 A kind of preparation method of flame retardant polyol

[0047]1) Add 100g of phosphorus pentoxide to the reactor, start stirring, add water 38 within 6min, raise the temperature, and keep the temperature at 80°C for 60min;

[0048] 2) Add 550g of propylene oxide within 10-15min, add 2.0g of catalyst benzyltriethylammonium chloride, reflux for 1h, raise the reaction temperature to 140°C, keep warm for 2h; add 12g of paraformaldehyde and 17g of melamine , heat preservation reaction 2h;

[0049] 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 flame-retardant polyol; the flame-retardant polyol was a reddish-brown transparent liquid with a mass yield of 97.7%, The acid value is 4.1mgKOH / g, and the viscosity is 5780mPa.s.

Embodiment 3

[0050] Embodiment 3 A kind of preparation method of flame retardant polyol

[0051] 1) Add 100g of phosphorus pentoxide to the reactor, start stirring, add 30g of water within 5min, raise the temperature, and keep the temperature at 75°C for 45min;

[0052] 2) Add 510g of epichlorohydrin within 13min, add 1.9g of catalyst benzyltrimethylammonium chloride, reflux for 1h, raise the reaction temperature to 135°C, keep warm for 2h; add paraformaldehyde 10.5 and melamine 15, Insulation reaction 2h;

[0053] 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 flame-retardant polyol; the flame-retardant polyol was a reddish-brown transparent liquid with a mass yield of 96.5%, The acid value is 5.3mgKOH / g, and the viscosity is 4956mPa.s.

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Abstract

The invention provides a preparation method and application of fire-retardant polyol, which belong to the technical fields of polymer chemistry, reactive flame retardants and building insulation materials. The fire-retardant polyol is prepared by reacting phosphorus pentoxide, water, alkylene oxide, cyanuric chloride and paraformaldehyde. Compared with an existing preparation method of phosphate flame retardants, the preparation method disclosed by the invention has the remarkable advantages of mild reaction, simple process, easiness in operation and low cost of raw materials; the fire-retardant polyol is used for preparing flame-retardant polyurethane foaming plastic.

Description

technical field [0001] The invention relates to a preparation method and application of a flame-retardant polyol, in particular to a preparation method of a phosphorus-nitrogen synergistic flame-retardant polyol used for preparing flame-retardant polyurethane foam, belonging to polymer chemistry, reactive flame retardants, Technical field of building 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, which is easy to cause fire, which brings great hidden dangers to people's lives and property safety. Adding flame retardants to raw materials is to improve the flame retardancy of polyurethane foam plastics. The most common method for performance. [0003] Flame retardants are d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/22C08G65/06C08G65/333C08G18/48C08G101/00
Inventor 匡轩王刚王志玲骆玉成魏琴吴丹
Owner UNIV OF JINAN
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