Phosphoric flame-proof copolyester ionomer and preparation method thereof

A flame-retardant copolyester and ionomer technology, applied in the field of phosphorus-containing flame-retardant copolyester ionomer and its preparation, can solve the limited contribution of flame-retardant properties, affect polyester molecular crystallization, and destroy polyester chains Regularity and other issues, to achieve the effect of increasing viscosity, good regularity and symmetry, and ingenious molecular design

Active Publication Date: 2008-07-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is a pity that this reaction is a random copolymerization of multiple monomers, so on the one hand it will seriously damage the regularity of the polyester chain and affect the crystallization of polyester molecules, thereby reducing the performance of the fiber. On the other hand, the fourth monomer is Sulfur-containing monomers also have limited contribution to flame retardancy

Method used

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  • Phosphoric flame-proof copolyester ionomer and preparation method thereof
  • Phosphoric flame-proof copolyester ionomer and preparation method thereof
  • Phosphoric flame-proof copolyester ionomer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Add 860g of terephthalic acid, 433mL of ethylene glycol (EG) and 0.301g of antimony trioxide into the reaction kettle, fill with nitrogen to remove the air in the kettle, pressurize to 0.07MPa; within 2h, raise the temperature to 240°C to start esterification Reaction, control the pressure in the kettle to be 0.3-0.4MPa. After maintaining for 2 hours, the pressure begins to decrease. After 1.5 hours, the temperature gradually rises to 260°C, the pressure drops to normal pressure, and the esterification reaction ends; nitrogen is slowly introduced into the reaction kettle, And the ionic monomer 3-(2-hydroxyethoxy)-3-oxopropyl (phenyl) sodium phosphinate (SHPPP) of 1.45g, the ethylene glycol solution is added in the reactor, and the temperature is controlled Above 210°C, when the temperature of the system rises slowly to 260°C, stop the nitrogen system and enter the vacuum polymerization stage, firstly, 260-270°C low vacuum polycondensation reaction for 0.5h, then raise th...

Embodiment 2

[0056] 860g of terephthalic acid, 433mL of ethylene glycol and 0.301g of antimony trioxide were added to the reactor, and the esterification reaction was carried out according to the steps and conditions given in Example 1; Nitrogen, and the ethylene glycol solution of the ionic monomer 3-(2-hydroxyethoxy)-3-oxopropyl (phenyl) phosphinate sodium of 14.5g is added in the reactor, and then according to the embodiment The steps and conditions given in 1 are carried out after polycondensation, and the material is discharged.

[0057] The intrinsic viscosity [η] of the ionomer is 0.67dL / g; the limiting oxygen index LOI is 25.6.

Embodiment 3

[0059] 860g of terephthalic acid, 433mL of ethylene glycol and 0.301g of antimony trioxide were added to the reactor, and the esterification reaction was carried out according to the steps and conditions given in Example 1; Nitrogen, and the ethylene glycol solution of the ionic monomer 3-(2-hydroxyethoxy)-3-oxopropyl (phenyl) phosphinate sodium of 72.5g is added in the reactor, and then according to the embodiment The steps and conditions given in 1 are carried out after polycondensation, and the material is discharged.

[0060] The intrinsic viscosity [η] of the ionomer is 0.64dL / g; the limiting oxygen index LOI is 27.0.

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Abstract

The invention discloses a phosphorus-containing flame retardant copolyester ionomer and the preparation method, which is characterized in that: based on a plurality of building units synthesizing polyester represented by I and II, a plurality building units represented by IV or a plurality building units represented by III and IV are introduced and the copolyester ionomer is prepared by random copolymerization; wherein, the number of the building units represented by III is 0 to 20 percent of the number of the building units represented by I, the number of the building units represented by IV is 0.1 to 20 percent of the number of the building units represented by I, the number of the building units represented II: the number of the building units represented by [I+III+IV] equals 1, the intrinsic viscosity of the prepared copolyester ionomer [Eta] is in the rang of 0.25 to 0.95dL/g. The phosphorus-containing flame retardant copolyester ionomer has the advantages that: because the ionic groups are phosphorus-containing groups, the flame-retardance modification and the ionization modification of polyester are realized simultaneously; meanwhile, the melt viscosity of polyester is enhanced by the incarbonization produced by the phosphorus-containing ionic groups and the ''physical crosslinking'' produced by the ''ionic aggregate'', thus, the flame retardant and anti-dripping performance is given to polyester.

Description

technical field [0001] The invention belongs to the technical field of a phosphorus-containing flame-retardant copolyester ionomer and a preparation method thereof. Specifically, the invention relates to a class of phosphorus-containing flame-retardant copolyesters with ionic groups and a preparation method thereof. Because this type of polyester realizes the flame-retardant modification and ionization modification of polyester at the same time, it can not only improve the dyeing performance of flame-retardant polyester fibers, but also stabilize the "physical interaction" produced by "ionic aggregates". "Link" increases the melt viscosity of polyester, thereby endowing polyester with anti-dropping properties. Background technique [0002] In recent years, fire accidents have been frequent, especially in public places and densely populated places. Once a fire accident occurs, it will not only cause property losses, but also cause heavy casualties. Therefore, the prevention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/692C08G63/78
Inventor 王玉忠葛欣国王氚向星敬新柯王德义孙哲
Owner SICHUAN UNIV
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