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Preparation method of flame-retardant and anti-smelting dripping polyester material and flame-retardant and anti-smelting dripping polyester

A polyester material and anti-dripping technology, which is applied in the preparation of flame-retardant and anti-dripping polyester materials, and in the field of flame-retardant and anti-dripping polyester materials, can solve problems such as difficult migration, poor crystallinity, and molten dripping. Achieve the effects of reducing the entry of external oxygen, increasing the oxygen index, and inhibiting thermal movement

Active Publication Date: 2017-10-13
深圳市高科塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flame retardant copolymerization process is complicated and the cost is high, since the flame retardant has entered the molecular chain of the polyester, it is not easy to migrate out, and it has durable flame retardant performance, especially for the spinnability and mechanical properties of the fiber. Less impact, has become the mainstream method of flame retardant polyester fiber production
[0005] However, the existing phosphorus-based flame-retardant copolyesters do not improve the melt-dripping phenomenon of PET, but make it easier to melt-drip. The molten dripping takes away heat to interrupt combustion; although such flame retardants can effectively improve the limiting oxygen index of PET, there is still a serious problem of molten dripping
At the same time, phosphorus-based flame-retardant copolyesters generally require the mass content of phosphorus to reach more than 0.6% to achieve a good flame-retardant effect, which requires the addition of more phosphorus-based flame retardant comonomers. Too much introduction will inevitably destroy the regularity of PET molecular structure, making its crystallinity poor, and the charcoal layer of phosphorus-containing copolymerized PET is not dense enough, so it is difficult to achieve the ideal heat insulation effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of the flame-retardant anti-droplet polyester material of the present embodiment comprises the following steps:

[0028] 1) Get graphene and modify it with silane coupling agent KH550 (3-aminopropyltriethoxysilane) to obtain modified graphene; the modification method is specifically:

[0029] Disperse 1g of graphene in 500ml of absolute ethanol and ultrasonically disperse for 2h to obtain a graphene dispersion; get 2ml of deionized water, 5ml of acetic acid solution (35wt%) and 0.1g of silane coupling agent KH550 and mix well, then add the In the above-mentioned graphene dispersion liquid, after continuing to ultrasonically disperse for 2 hours, keep warm at 80°C for 4h, then filter with suction, wash the obtained solid repeatedly with absolute ethanol and deionized water, and then dry it at 60°C to obtain the modified graphene;

[0030] 2) Add the modified graphene obtained in step 1) into ethylene glycol, ultrasonically disperse, then add high-p...

Embodiment 2

[0034] The preparation method of the flame-retardant anti-droplet polyester material of the present embodiment comprises the following steps:

[0035] 1) Get graphene and modify it with silane coupling agent KH550 (3-aminopropyltriethoxysilane) to obtain modified graphene; the modification method is specifically:

[0036]Disperse 1g of graphene in 500ml of absolute ethanol and ultrasonically disperse for 2h to obtain a graphene dispersion; get 2ml of deionized water, 5ml of acetic acid solution (35wt%) and 0.1g of silane coupling agent KH550 and mix well, then add the In the above-mentioned graphene dispersion liquid, after continuing ultrasonic dispersion for 2 hours, heat preservation at 75°C for 5h, then suction filtration, repeated washing of the obtained solid with absolute ethanol and deionized water, and finally drying at 60°C, that is, the modified graphene;

[0037] 2) Add the modified graphene obtained in step 1) into ethylene glycol, ultrasonically disperse, then ad...

Embodiment 3

[0041] The preparation method of the flame-retardant anti-droplet polyester material of the present embodiment comprises the following steps:

[0042] 1) Get graphene and modify it with silane coupling agent KH550 (3-aminopropyltriethoxysilane) to obtain modified graphene; the modification method is specifically:

[0043] Disperse 1g of graphene in 500ml of absolute ethanol and ultrasonically disperse for 2h to obtain a graphene dispersion; get 2ml of deionized water, 5ml of acetic acid solution (35wt%) and 0.1g of silane coupling agent KH550 and mix well, then add the In the above-mentioned graphene dispersion liquid, after continuing ultrasonic dispersion for 2 hours, heat preservation at 85°C for 3h, then suction filtration, repeated washing of the obtained solid with absolute ethanol and deionized water, and finally drying at 60°C, that is, the modified graphene;

[0044] 2) Add the modified graphene obtained in step 1) into ethylene glycol, ultrasonically disperse, then a...

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Abstract

The invention relates to a preparation method of a flame-retardant and anti-smelting dripping polyester material and the flame-retardant and anti-smelting dripping polyester. The preparation method comprises the following steps of (1) selecting a silicane coupling agent for graphene, and modifying, so as to obtain modified graphene; (2) adding the modified graphene into ethylene glycol, dispersing by ultrasonic waves, adding terephthalic acid, hexa(4-nitrophenoxy)cyclotriphosphazene and a catalyst (ethylene glycol antimony), heating to 230 to 260 DEG C, performing esterification reaction, heating to 275 to 285 DEG C and performing condensation reaction, so as to obtain graphene-modified phosphor-containing PET (polyethylene terephthalate); (3) smelting and mixing the obtained graphene-modified phosphor-containing PET, polyvinyl silsesquioxane and polytetrafluoroethylene at the temperature of 260 to 270 DEG C, so as to obtain the flame-retardant and anti-smelting dripping polyester material. The flame-retardant and anti-smelting dripping polyester material has the advantages that the extreme oxygen index reaches 33% or above, the vertical combustion class reaches UL94 V-0, the flame-retardant effect is obvious, any smelting dripping is avoided, the application is safe and reliable, and the flame-retardant and anti-smelting dripping polyester material is suitable for being popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of polyester materials, and in particular relates to a flame-retardant and anti-melting drop polyester material, and also relates to a preparation method of a flame-retardant and anti-melting drop polyester material. Background technique [0002] Polyethylene terephthalate (PET) is synthesized from bishydroxyethyl terephthalate by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol. Then the crystalline saturated polyester obtained by polycondensation reaction has both rigid benzene ring and aliphatic chain link in its molecular structure, so it not only has good mechanical properties, but also has good processability and melting property. It is often made into fibers, films, plastic products and other widely used. [0003] However, the limiting oxygen index of PET is only 21%, which belongs to the flammable level, and will continue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L83/07C08L27/18C08K13/06C08K9/06C08K3/04C08K5/5399C08K5/134C08K5/103C08G63/183C08G63/86
CPCC08G63/183C08G63/866C08L67/02C08L2201/02C08L2205/03C08L83/04C08L27/18C08K13/06C08K9/06C08K3/04C08K5/5399C08K5/1345C08K5/103
Inventor 魏科峰
Owner 深圳市高科塑化有限公司