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Preparation method of inflame-retardant anti-dripping polyester composite fibers

A technology of composite fiber and flame-retardant copolyester, which is applied in the direction of fiber treatment, fiber chemical characteristics, and conjugated synthetic polymer artificial filament, etc., which can solve the problems of insufficient flame-retardant effect, influence of material mechanical properties, and poor compatibility and other issues, to achieve good flame retardant and anti-droplet effects, easy implementation, and simple process

Active Publication Date: 2013-06-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the huge surface area and poor compatibility with polymers, inorganic silicate is very easy to agglomerate in the matrix to form a phase-separated structure, which not only cannot fully exert the flame retardant effect, but may also affect the mechanical properties of the material. make an impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 250 grams of terephthalic acid, 150 milliliters of ethylene glycol (99vol%) and 32 grams of 2-carboxyethylphenylphosphinic acid are mixed, and 0.1 gram of ethylene glycol antimony is added as a catalyst, and 0.1 gram of triphenyl phosphate is Heat stabilizers. The esterification reaction is carried out at 230°C under the pressure of 0.4MPa, and then the polycondensation reaction is carried out under the vacuum condition of 260°C to obtain the flame retardant copolyester.

[0025] 100 g SnF 2 , 40g SnO and 60g P 2 o 5 Pre-mixed for 30 minutes, then melted at 450°C for 70 minutes, then poured on a stainless steel plate to cool, and finally heat-treated at 90°C for 90 minutes to obtain phosphate glass.

[0026] 55% flame-retardant copolyester and 45% phosphate glass (weight percentage) are melt-blended in a twin-screw to prepare a flame-retardant copolyester / phosphate glass hybrid material, and the blending temperature is 230°C.

[0027] After the flame retardant copol...

Embodiment 2

[0029] Mix 250 grams of terephthalic acid, 170 milliliters of ethylene glycol (99 vol%) and 40 grams of 9,10-dihydro-9-oxa-10-phosphaphenanthrene, add 0.1 grams of ethylene glycol Antimony is used as a catalyst, and 0.1 g of triphenyl phosphate is used as a thermal stabilizer. The esterification reaction is carried out at 280°C and the pressure is 0.1 MPa, and then the polycondensation reaction is carried out at 290°C under high vacuum conditions to obtain the flame-retardant copolyester.

[0030] 90 g SnF 2 , 50 g SnO and 60 g P 2 o 5 Pre-mixed for 30 minutes, then melted at 450°C for 70 minutes, then poured on a stainless steel plate to cool, and finally heat-treated at 90°C for 90 minutes to obtain phosphate glass.

[0031]40% flame-retardant copolyester and 60% phosphate glass (weight percentage) are melt-blended in a twin-screw to prepare a flame-retardant copolyester / phosphate glass hybrid material, and the blending temperature is 270°C.

[0032] After the flame reta...

Embodiment 3

[0034] 250 grams of terephthalic acid, 150 milliliters of ethylene glycol (99vol%) and 25 grams of 2-carboxyethylphenylphosphinic acid are mixed, and 0.1 gram of ethylene glycol antimony is added as a catalyst, and 0.1 gram of triphenyl phosphate is Heat stabilizers. The esterification reaction is carried out at 240°C and the pressure is 0.2MPa, and then the polycondensation reaction is carried out under the high vacuum condition of 280°C to obtain the flame retardant copolyester.

[0035] 100 g SnF 2 , 40 g SnO and 95 g NH 4 h 2 PO 4 Pre-mixed for 30 minutes, then melted at 450°C for 70 minutes, then poured on a stainless steel plate to cool, and finally heat-treated at 90°C for 90 minutes to obtain phosphate glass.

[0036] 35% flame-retardant copolyester and 65% phosphate glass (weight percentage) are melt-blended in a twin-screw to prepare a flame-retardant copolyester / phosphate glass hybrid material, and the blending temperature is 260°C.

[0037] After the flame ret...

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Abstract

The invention relates to a preparation method of inflame-retardant anti-dripping polyester composite fibers. The method provided by the invention comprises the following steps of: (1) mixing aromatic dicarboxylic acid, dihydric alcohol and phosphorus-containing fire retardant and adding catalyst and heat stability; reacting to obtain an inflame-retardant copolyester; (2) pre-mixing SNF2, SnO, NH4H2PO4 or P2O5 for 30-60 min and melting at a temperature in a range of 400-500 DEG C for 60-90 min; cooling and carrying out a heat treatment at a temperature in a range of 70-100 DEG C for 90-120 minto obtain phosphate glass; and (3) blending the inflame-retardant copolyester with the phosphate glass and melting and spinning to obtain the inflame-retardant anti-dripping polyester composite fibers. The method provided by the invention has the advantages of simple process and easiness of being implemented; the prepared copolyester and fibers thereof have good inflame-retardant and anti-dripping performances; the limit oxygen index of the textiles is 29.8-33.2% and no melted drops are formed when the product is combusted so that the method provided by the invention has a good application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of polyester composite fibers, in particular to a preparation method of flame-retardant and droplet-resistant polyester composite fibers. Background technique [0002] Most fibers and textiles are flammable or combustible materials, and fires caused by non-flammable textiles account for more than 20% of the total number of fire accidents. Due to its excellent physical and mechanical properties and excellent comprehensive performance, polyester fiber has become the most widely used and largest variety of textiles. However, the fiber is a kind of combustible fiber, and it produces severe melt dripping when burning, which limits its application in many fields. Therefore, the research on fiber flame-retardant technology has become a subject of great concern in academia and industry. Since the 1970s, various flame-retardant polyester fiber products and patents have been continuously published. [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/18D01D5/34C08G63/692
Inventor 马敬红徐坚龚静华杨曙光
Owner DONGHUA UNIV
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