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Halogen-free flame retardant polyester material and preparation method thereof

A technology of flame-retardant polyester and polyester, which is applied in the manufacture of fire-retardant and flame-retardant filaments, and single-component polyester rayon. Unsatisfactory, large amount of flame retardant, etc., to achieve the effect of increasing the thickness of the carbonized layer and the amount of residual carbon, improving the insulation effect, and reducing the amount of smoke generated

Active Publication Date: 2013-06-26
HANGZHOU CHANGXIANG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of the post-finishing method are that the process is simple, the cost is low, the application is wide, and it can meet different degrees of flame retardant requirements; the disadvantage is that the flame retardant is used in a large amount, and the durability is not ideal, which affects the strength and feel of fibers and fabrics. Performance impact is relatively large

Method used

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  • Halogen-free flame retardant polyester material and preparation method thereof
  • Halogen-free flame retardant polyester material and preparation method thereof
  • Halogen-free flame retardant polyester material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of polyethylene glycol modified polyester: prepared by two-stage twin-screw extrusion equipment, and 7.996 mol polyethylene terephthalate (Rongsheng Petrochemical, fiber grade filament PET polyester chips) , 1mol of toluene diisocyanate, 0.0013mol of dibutyltin maleate are mixed uniformly at a low temperature and high speed (5000 revolutions per minute) at 20℃, and then extruded through first-stage co-directional parallel blending (first-stage extrusion temperature 242.5℃ ±7.5℃); then add 1mol polyethylene glycol (average molecular weight 10000) and 0.0027mol catalyst dibutyltin maleate at the feeding port of the second-stage extrusion, and granulate through the second-stage co-directional parallel blending and extrusion (two Step extrusion temperature is 245℃±5℃) to obtain polyethylene glycol modified polyester.

[0047] (2) Preparation of flame retardant: the average particle size of 1kg is 200nm and the CEC is 1mmol·g -1 The sodium-based montmorillonite ...

Embodiment 2

[0051] (1) Preparation of polyethylene glycol modified polyester: Prepared by two-stage twin-screw extrusion equipment, 5.992mol polytrimethylene terephthalate (Rongsheng Petrochemical, fiber grade filament PTT polyester chips), 2mol Toluene diisocyanate and 0.0026mol dibutyltin maleate are mixed uniformly at a low temperature and high speed (5000 rpm) at 15℃, and then extruded through first-stage co-directional parallel blending (first-stage extrusion temperature 242.5℃±7.5 ℃); then add 2mol polyethylene glycol (average molecular weight 8000) and 0.0054mol catalyst dibutyl tin maleate at the feeding port of the second-stage extrusion, and granulate through the second-stage co-directional parallel blending and extrusion (two-stage extrusion) The output temperature is 245℃±5℃) to obtain polyethylene glycol modified polyester.

[0052] (2) Preparation of flame retardant: the average particle size of 1kg is 200nm and the CEC is 1mmol·g -1 The sodium-based montmorillonite is uniforml...

Embodiment 3

[0056] (1) Preparation of polyethylene glycol modified polyester: prepared by a two-stage twin-screw extrusion equipment, 6.794mol polybutylene terephthalate (Rongsheng Petrochemical, fiber grade filament PBT polyester chip) , 1.6mol of toluene diisocyanate, 0.002mol of dibutyltin maleate, mixed uniformly at 10℃, low temperature and high speed (5000 revolutions / min), and extruded through first-order co-directional parallel blending (first-order extrusion temperature 242.5 ℃±7.5℃); Then add 1.6mol polyethylene glycol (average molecular weight 10000) and 0.004mol catalyst dibutyltin maleate at the feeding port of the second-stage extrusion, and granulate through the second-stage co-directional parallel blending and extrusion (The second-stage extrusion temperature is 245℃±5℃), and the polyethylene glycol modified polyester is prepared.

[0057] (2) Preparation of flame retardant: the average particle size of 1kg is 200nm and the CEC is 1mmol·g -1 The sodium-based montmorillonite is...

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Abstract

The invention discloses a halogen-free flame retardant polyester material and a preparation method thereof. The halogen-free flame retardant polyester material is prepared from the following raw materials according to weight percent: 88%-94% of first polyesters and 6%-12% of flame retardant masterbatches, wherein the flame retardant masterbatches are prepared from the following raw materials according to weight percent: 50%-80% of polyethylene glycol modified polyesters and 20%-50% of a flame retardant. The halogen-free flame retardant polyester has a high flame retardant efficiency and is long in durability and good in hand feel or flexibility. The preparation method of the halogen-free flame retardant polyester material comprises the steps of mixing the polyethylene glycol modified polyesters with the flame retardant uniformly for extruding and granulating to obtain the flame retardant masterbatches, drying the flame retardant masterbatches, then blending the dried flame retardant masterbatches with the first polyesters for extruding and melt spinning, and winding the mixture to obtain the halogen-free flame retardant polyester material. The method is simple to operate and easy to control.

Description

Technical field [0001] The invention relates to the field of functional synthetic fibers, in particular to a halogen-free flame-retardant polyester material and a preparation method thereof. Background technique [0002] China has developed into the world's largest producer, consumer and exporter of chemical fiber. Among them, polyester fiber (such as polyester) has a wide range of uses due to its high strength, large elastic modulus, good heat resistance, and stable chemical properties. Since the realization of industrial production, it has been developing rapidly. With the textile industry The development and the improvement of people’s living standards and the continuous improvement of polyester performance. Clothing and knitwear made of polyester fibers such as polyester or polyester blended or interwoven with natural fibers are very popular. Polyester fabrics have become the largest variety of chemical fibers. . [0003] However, polyester fiber is a flammable fiber, and its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07C08L67/02C08L75/06C08L75/08C08K5/5353C08K5/5333C08K9/04C08K3/34
Inventor 韩建国陶何樑韩国富周箭
Owner HANGZHOU CHANGXIANG CHEM FIBER
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