Preparation method of environmentally-friendly flame-retardant polyester bulked continuous filament

A technology of flame-retardant polyester and bulked filaments, which is applied in the manufacture of fire-resistant and flame-retardant filaments, single-component polyester artificial filaments, and conjugated synthetic polymer artificial filaments, etc., to achieve the effect of reducing the amount of consumption

Active Publication Date: 2015-12-09
CHANGZHOU LINGDA SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: Based on the above problems, the present invention provides a method for preparing environmentally friendly flame-retardant polyester bulked filaments, which uses phosphorus-nitrogen-based and silicon-boron-based polymer flame retardants to form the main flame-retardant agent, the combination of silane coupling agent modified styrene-acrylic copolymer and a small amount of modified ultra-fine montmorillonite mainly produces droplet resistance; due to the synergy of each component, the total amount of addition is reduced; the polymer of flame retardant Features, low volatility, low migration and little influence on the mechanical properties of flame retardant materials during spinning and use; due to the low addition of non-melting inorganic micropowder, the spinnability is improved and the wear and tear on spinning equipment The property is reduced; the purpose of improving environmental friendliness, drop resistance and economy for flame-retardant polyester bulked filaments is achieved

Method used

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  • Preparation method of environmentally-friendly flame-retardant polyester bulked continuous filament
  • Preparation method of environmentally-friendly flame-retardant polyester bulked continuous filament
  • Preparation method of environmentally-friendly flame-retardant polyester bulked continuous filament

Examples

Experimental program
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Effect test

Embodiment 1

[0066] Polyester (PET) flame retardant bulked filament preparation (denier: 1500tex / 90F):

[0067] a. Preparation of styrene-acrylic copolymer microspheres modified by silane coupling agent;

[0068] Mix 28 parts of methacryloxypropyltrimethoxysilane, 22 parts of methyl methacrylate and 50 parts of styrene to form a monomer mixture; 1.5 parts of polyvinylpyrrolidone, 0.45 parts of dimethyl azobisisobutyrate 21 parts of ethanol and 21 parts of ethanol were stirred and dissolved to form a dispersion / initiator solution for later use; 130 parts of ethanol and 2.5 parts of polyvinylpyrrolidone were added to the reactor and stirred to dissolve, then 0.3 parts of dimethyl azobisisobutyrate and 1 / 2 amount of monomer mixture, and another 1 / 2 of the monomer mixture is added to the dropping tank; fill the reaction kettle and the dropping tank with nitrogen to 0.06MPa, exhaust to a slight positive pressure, and repeat 5 times; start stirring and heat up to 64~ 66°C, after 1 hour, start t...

Embodiment 2

[0086] Preparation of PTT bulked filament (denier: 1500tex / 90F):

[0087] a. Preparation of styrene-acrylic copolymer microspheres modified by silane coupling agent: same as Example 1

[0088] b. Preparation of flame retardant masterbatch: by weight, including the following raw materials: 22 parts of dried benzomelamine carboxyethylphenylphosphinic acid condensate, 7.5 parts of polyborosiloxane, and 11 parts of copolymer microspheres , 4 parts of superfine modified montmorillonite, 54 parts of butylene terephthalate and 1.5% of zinc stearate, mixed by a high-speed mixer, melted and blended by a twin-screw extruder, and granulated;

[0089] Among them: benzomelamine carboxyethylphenyl phosphinic acid condensation product condensation degree n=44-46; phenyl / methyl group on polyborosiloxane=70 / 30, condensation degree n+m=45.

[0090] c. Spinning: Add 75 parts of dried butylene terephthalate chips and 25 parts of flame-retardant masterbatch to the feeding screw of the BCF spinnin...

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Abstract

The invention relates to a preparation method of an environmentally-friendly flame-retardant polyester bulked continuous filament. The method comprises the following steps: a, preparing a silane coupling agent-modified styrene-acrylic copolymer; b, preparing flame-retardant master batches; c, spinning. Due to the adoption of phosphorus-nitrogen type and boron-silicon type polymer flame retardants, a compounded flame retardant of the organic silicone-modified styrene-acrylic copolymer with cross-linking capacity and a small amount of montmorillonite, and the polymerization of the three flame retardant components, the environmental friendliness of a flame-retardant system is improved; the limit oxygen index of the obtained bulked continuous filament is greater than or equal to 28 percent, and the bulked continuous filament is low in smokiness, low in toxicity and resistant to molten droplets; the smokiness of a spinning process is low, and the spinnability is good.

Description

technical field [0001] The invention relates to the technical field of chemical fiber spinning, in particular to a method for preparing flame-retardant polyester bulked filaments used for carpet veils. Background technique [0002] Polyesters currently used for bulked filaments include: polyethylene terephthalate (PET), cationic dyeable polyester (ECDP), polybutylene terephthalate (PBT) and polyparaphthalmic Propylene glycol diate (PTT). In recent years, the development and application of the latter three polyester fibers has enabled the rapid development of the application of polyester family bulked yarn in the field of carpets due to its unique low cost, smooth touch, high crimp, and better weather resistance. . For example, in the U.S. market, PET accounted for 10% in 2010, and reached more than 30% in 2012. In the sales of Newmag's BCF spinning machines in the U.S. market in recent years, polyester machines accounted for 55% and polypropylene machines accounted for 35%...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F6/92D01F1/07D01F1/10C08F212/08C08F230/08C08F220/14D01D5/08D01D5/088D01D5/14D01D10/02
Inventor 蒋韶贤张立军陆惠林薛小平蒋枫柴立锋李昳邓希平
Owner CHANGZHOU LINGDA SPECIAL FIBER
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