High-strength antiflaming polyester industrial filaments and preparation method thereof

A technology of flame retardant polyester and industrial yarn, which is applied in the manufacture of fire-retardant and flame-retardant filaments, single-component polyester rayon, etc. Low strength and other problems, to achieve excellent viscosity increase effect, large melting enthalpy value, high melting point effect

Active Publication Date: 2019-12-03
WUXI SUOLIDE TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the above-mentioned announced implementations all have the problem of low fiber strength and great influence on the mechanical properties of the fiber after flame-retardant modification, which is difficult to meet the application of high-strength flame-retardant polyester industrial yarn in high-end fire protection, military and other fields.

Method used

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  • High-strength antiflaming polyester industrial filaments and preparation method thereof
  • High-strength antiflaming polyester industrial filaments and preparation method thereof
  • High-strength antiflaming polyester industrial filaments and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0038] A kind of preparation method of high-strength flame-retardant polyester industrial yarn, it comprises the following steps,

[0039] (1) Preparation of terminal epoxy flame retardant

[0040] According to a certain ratio, the phosphorus-containing flame retardant 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) and epichlorohydrin Mix, then add the catalyst benzyltriethylammonium chloride and react at 80-90°C for 60-90 minutes, then add NaOH aqueous solution, stir at room temperature for 30-45 minutes, and then add ethyl acetate and water after the reaction The mixed solvent is extracted to obtain the organic phase, then dried with anhydrous sodium sulfate, and the ethyl acetate is removed by the method of pressure distillation to prepare the terminated epoxy flame retardant, the melting point of the described epoxy terminated flame retardant is 165~168℃.

[0041] The mol ratio of described ODOPB and epichlorohydrin is 1:2; The mass fr...

Embodiment 2

[0058] A kind of preparation method of high-strength flame-retardant polyester industrial yarn, it comprises the following steps,

[0059] (1) Preparation of terminal epoxy flame retardant

[0060] According to a certain ratio, the phosphorus-containing flame retardant 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) and epichlorohydrin Mix, then add the catalyst benzyltriethylammonium chloride and react at 80-90°C for 60-90 minutes, then add NaOH aqueous solution, stir at room temperature for 30-45 minutes, and then add ethyl acetate and water after the reaction The mixed solvent is extracted to obtain the organic phase, then dried with anhydrous sodium sulfate, and the ethyl acetate is removed by the method of pressure distillation to prepare the terminated epoxy flame retardant, the melting point of the described epoxy terminated flame retardant is 165~168℃.

[0061] The mol ratio of described ODOPB and epichlorohydrin is 1:10; The massfr...

Embodiment 3

[0078] A kind of preparation method of high-strength flame-retardant polyester industrial yarn, it comprises the following steps,

[0079] (1) Preparation of terminal epoxy flame retardant

[0080] According to a certain ratio, the phosphorus-containing flame retardant 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) and epichlorohydrin Mix, then add the catalyst benzyltriethylammonium chloride and react at 80-90°C for 60-90 minutes, then add NaOH aqueous solution, stir at room temperature for 30-45 minutes, and then add ethyl acetate and water after the reaction The mixed solvent is extracted to obtain the organic phase, then dried with anhydrous sodium sulfate, and the ethyl acetate is removed by the method of pressure distillation to prepare the terminated epoxy flame retardant, the melting point of the described epoxy terminated flame retardant is 165~168℃.

[0081] The mol ratio of described ODOPB and epichlorohydrin is 1:5; The mass fr...

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Abstract

The invention relates to high-strength antiflaming polyester industrial filaments and a preparation method thereof. Particularly, by utilizing processes of low-temperature vacuum viscosity improvement, high-temperature viscosity improvement and high-temperature solid-phase viscosity improvement, phosphorus-containing viscosity-improvement polyester chips are prepared, and by utilizing a melt spinning process of the antiflaming viscosity-improvement polyester chips, high-strength antiflaming polyester industrial filaments are prepared. The intrinsic viscosity of the antiflaming viscosity-improvement polyester chips is 1.05-1.25 dL / g, the terminal carboxyl group content is 12-22 mmol / kg, the average molecular weight is 35,000-45,000, the molecular weight distribution coefficient PDI is 1.05-1.08, the phosphorus content is 0.3-4.0 wt%, and the limit oxygen index is 28-36%; the linear density of the high-strength antiflaming polyester industrial filaments is 200-5,000 D, the single filament fineness is 1.5-20 dpf, the breaking strength is 6.5-7.6 cN / dtex, the content of phosphorus in fibers is 0.3-1.0%, the limit oxygen index is 28-34%, and after a plain weave fabric is washed with 0.1mol / L sodium hydroxide for 15 minutes at 80 DEG C, the limit oxygen index is greater than or equal to 28%. The high-strength antiflaming polyester industrial filaments have high strength, excellent antiflaming performance and good washable performance, are used for the fields of advertising cloth, fire-fighting hoses, oil containing bags of military boxes and the like and have an important application prospect.

Description

technical field [0001] The invention belongs to the technical field of industrial fiber production, and in particular relates to a high-strength flame-retardant polyester industrial yarn and a preparation method thereof. Background technique [0002] Polyester industrial yarn, as a kind of high-performance fiber, has high strength, high modulus, impact resistance, fatigue resistance and other properties, and is widely used in automotive rail transit, aerospace, fire protection and other fields; while flame-retardant polyester industrial yarn is used as a skeleton material , It has broad application prospects in military fields such as military cables, military tents, military luggage straps, flexible gun jackets, and military flexible oil bags. However, the existing flame-retardant modification of polyester seriously affects the mechanical properties of industrial yarns, and the flame-retardant modification method brings more serious molten droplets and smoke content, which ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07
CPCD01F1/07D01F6/92
Inventor 金亮江振林戴锁洪王华平柯福佑范晓兵钱卉
Owner WUXI SUOLIDE TECH DEV CO LTD
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