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Preparation method for synergistic polyhydric alcohol used for flame retardant polyurethane foaming plastic

A foamed plastic and polyol technology, which is applied in the field of preparation of synergistic polyols, can solve problems such as the inability of flame retardant ability to meet usage requirements, and achieve the effect of increasing molecular weight

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 polyurethane foam insulation materials prepared by a single flame retardant element often cannot meet the requirements of use. The development of the field is of great significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 A kind of preparation method for the synergistic polyol of flame-retardant polyurethane foam plastics

[0041]Add 130g of triethyl phosphate into the flask equipped with a reflux device, start stirring, add 60g of phosphorus pentoxide, heat up to 115-125°C, keep warm for 20-30min; add 50g of pentaerythritol and 2.0g of catalyst monobutyl stannic acid , reacted for 2.5h; added tetrabromophthalic anhydride 105g, reacted for 0.5h; added propylene oxide 300g and catalyst tetraethylammonium bromide 2g, continued to react for 4h, cooled, and discharged to obtain a multi-component compound used for flame-retardant polyurethane foam plastics Alcohol; the polyol is a reddish-brown transparent liquid with an acid value of 1.8 mgKOH / g and a viscosity of 8240 mPa.s.

Embodiment 2

[0042] Embodiment 2 A kind of preparation method for the synergistic polyol of flame-retardant polyurethane foam plastics

[0043] Add 130g of triethyl phosphate into the flask equipped with a reflux device, start stirring, add 90g of phosphorus pentoxide, heat up to 125°C, and keep it warm for 30 minutes; add 80g of pentaerythritol and 2.7g of catalyst monobutyltin triisooctoate , reacted for 3.5h; added 130g of tetrabromophthalic anhydride, reacted for 0.5h; added 400g of epichlorohydrin and 2.9g of catalyst benzyltriethylammonium chloride, continued to react for 5h, cooled, and discharged to prepare flame-retardant polyurethane Foam polyol; the polyol is a reddish-brown transparent liquid with an acid value of 2.3mgKOH / g and a viscosity of 9566mPa.s.

Embodiment 3

[0044] Embodiment 3 A kind of preparation method for the synergistic polyol of flame-retardant polyurethane foam plastics

[0045] Add 130g of triethyl phosphate into the flask equipped with a reflux device, start stirring, add 75g of phosphorus pentoxide, heat it up to 120°C, and keep it warm for 25 minutes; add 65g of pentaerythritol and the catalyst monobutyl dihydroxy tin chloride, 2.4g, reacted for 3.0h; added 120g of tetrabromophthalic anhydride, reacted for 0.5h; added 330g of epichlorohydrin and catalyst dodecyltrimethylammonium chloride 2.5g, continued to react for 4.5h, cooled, and discharged to obtain Polyol used for flame-retardant polyurethane foam; the polyol is a reddish-brown transparent liquid with an acid value of 2.0mgKOH / g and a viscosity of 8963mPa.s.

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Abstract

The invention discloses a preparation method for synergistic polyhydric alcohol used for flame retardant polyurethane foaming plastic, and belongs to the technical field of high polymer chemistry, reactive flame retardants and building insulation materials. The polyhydric alcohol is prepared by catalytic reaction among triethyl phosphate, phosphorus pentoxide, pentaerythritol, Tetrabromophthalic anhydride and alkylene oxide.

Description

technical field [0001] The invention relates to a method for preparing a synergistic polyol for flame-retardant polyurethane foam, in particular to a method for preparing a phosphorus-bromine synergistic flame-retardant polyol for preparing flame-retardant polyurethane foam, which belongs to polymer materials, Reactive flame retardants, energy conservation and protection, environmentally friendly new technology and building insulation materials technology. Background technique [0002] Polyurethane foam is a low-density microporous urethane polymer material produced by the reaction of polyester or polyether polyols with isocyanate. It has light weight, low water absorption, good heat insulation, strong weather resistance, and low thermal conductivity. And good mechanical properties and chemical corrosion resistance, and has a strong bond strength with a variety of materials, is widely used as thermal insulation materials for petrochemical pipelines, refrigeration equipment, ...

Claims

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Application Information

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IPC IPC(8): C08G79/04C08G18/64C08G18/76C08G18/18C08J9/08
Inventor 匡轩王志玲魏琴吴丹马洪敏张勇
Owner UNIV OF JINAN
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