Halogen-free fire-retardant unsaturated polyester resin, preparation method and use thereof

A polyester resin, unsaturated technology, applied in the field of substituted alkanes, to achieve the effect of simple preparation process, good storage stability, and reduced brittleness

Active Publication Date: 2012-10-17
CHANGZHOU HUARUN COMPOSITE MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] An object of the present invention is to provide a halogen-free flame-retardant unsaturated polyester resin, which solves the problems existing in the existing flame-retarda

Method used

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  • Halogen-free fire-retardant unsaturated polyester resin, preparation method and use thereof
  • Halogen-free fire-retardant unsaturated polyester resin, preparation method and use thereof
  • Halogen-free fire-retardant unsaturated polyester resin, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Add 150g of 1,2-propanediol, 172g of ethylene glycol, 300g of DOPO grafted with itaconic acid (DOPO-ITAH), 158g of ortho-benzene Diformic anhydride and 250g maleic anhydride; after the water is discharged at 155°C-160°C, keep it at 155°C-160°C for 2 hours. After the heat preservation is over, slowly increase the oil temperature until the material temperature is 175°C-180°C. Control the temperature of the distillation head at 97°C-100°C, and when the distillation temperature is lower than 80°C, go to the fractionation column. During the reaction process, take a sample to measure the solid acid value. When the solid acid value is 39-45mgKOH / g, start to cool down and add 0.25g hydroquinone to it to obtain a halogen-free flame-retardant unsaturated polyester (Mn is 1038Da, dispersed coefficient of 1.15). When the temperature drops to 160°C, pour the polyester into a dilution barrel previously filled with 300g styrene and 50g triallyl isocyanurate, stir evenly and cool down ...

Embodiment 2

[0034] Add 105g of 1,2-propanediol, 171.7g of ethylene glycol, 333.3g of DOPO grafted with itaconic acid (DOPO-ITAH), 156.7 g phthalic anhydride and 183.3g maleic anhydride; after the water is discharged at 155°C-160°C, keep it at 155°C-160°C for 2 hours, after the heat preservation is over, slowly increase the oil temperature until the material temperature is 175°C-180 ℃, the temperature of the distillation head is controlled at 97-100℃ during the reaction process, and when the distillation temperature is lower than 80℃, the fractionation column is removed. During the reaction process, take a sample to measure the solid acid value. When the solid acid value is 39-45mgKOH / g, start to cool down and add 0.25g hydroquinone to it to obtain a halogen-free flame-retardant unsaturated polyester (Mn is 1008Da, dispersed coefficient of 1.24). When the temperature drops to 160°C, pour the polyester into a dilution barrel previously filled with 320g styrene and 65g triallyl isocyanurate...

Embodiment 3

[0036] Add 276.7g propylene glycol, 48.3g diethylene glycol, 350g itaconic acid grafted DOPO (DOPO-ITAH), 80g o-phthalic acid Diformic anhydride and 225g maleic anhydride; after the water is discharged at 155°C-160°C, keep warm at 155°C-160°C for 2 hours. After the heat preservation is over, slowly increase the oil temperature until the material temperature is 175°C-180°C. Control the temperature of the distillation head at 97°C-100°C, and when the distillation temperature is lower than 80°C, go to the fractionation column. During the reaction process, take a sample to measure the solid acid value. When the solid acid value is 39-45mgKOH / g, start to cool down and add 0.25g hydroquinone to it to obtain a halogen-free flame-retardant unsaturated polyester (Mn is 1027Da, dispersed coefficient of 1.28). When the temperature drops to 160°C, pour the polyester into a dilution barrel previously filled with 325g of styrene and 75g of triallyl isocyanurate, stir evenly and cool down t...

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Abstract

The invention relates to a halogen-free fire-retardant unsaturated polyester resin, which mainly comprises, 63-69wt% of a halogen-free fire-retardant unsaturated polyester, 19-22 wt% of styrene, 3-7wt% of a nitrogen-containing cross-linking monomer and 5-14wt% of a phosphorus-containing additive-type fire-retardant agent, wherein the halogen-free fire-retardant unsaturated polyester is prepared by carrying out blending polymerization on 26-36 parts by weight of a diacid grafted DOPO derivative, 30-44 parts by weight of a phosphorus-free diacid or an anhydride, and 28-34 parts by weight of a diol (the number average molecular weight Mn of the resulting polyester is 970-1120 Daltons, and the molecular weight dispersion coefficient is 1.05-1.4). According to the present invention, benzoyl peroxide and a nitrogen-containing promoter tertiary arylamine curing system are adopted to achieve normal temperature curing of the resin; flammability level of the product of the present invention achieves the S3 standard and above, the smoking level achieves SR2, the toxicity achieves the requirement of FED (tzul) less than 0.5, and the fire-retardant property of the product meets fire safety standards in Germany DIN 5510-2:2009-05.

Description

technical field [0001] The invention relates to a substituted alkane, in particular to a small-molecule organic branched monomer, which is applied to the low-shrinkage saturated polyester resin branched polymerization technology, so that the saturated polyester can realize high-efficiency polycondensation reaction and body molecular structure, and is especially suitable for use in Applications in the field of high-end molding compounds. Background technique [0002] In recent years, fires have become more and more frequent, and the economic losses caused by fires have also become more and more serious. According to statistics, in the first half of 2011, a total of 83,983 fires were reported across the country, 749 people died, 359 people were injured, and the direct property loss was 1.16 billion yuan. Compared with the same period last year, the number of fires and losses increased by 15.4% and 12.3% respectively. and the number of injured increased by 50 and 78, respectiv...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08F283/01C08G63/692C08K5/5333C08K5/523
Inventor 包柏青张友文赵金保
Owner CHANGZHOU HUARUN COMPOSITE MATERIALS
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