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Phosphamide fiber and preparation method thereof through solution method

A polyphosphoramid, fiber solution technology, applied in the chemical characteristics of fibers, single-component synthetic polymer rayon, textiles and papermaking, etc., can solve the problems of low rheological temperature, low efficiency, difficulty in dyeing and finishing, etc. The effect of good flame retardant effect, easy operation and simple preparation process

Active Publication Date: 2016-01-13
深圳市名仕度服饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low efficiency, low rheological temperature, secondary burn caused by melting and dripping, difficult dyeing and finishing, poor hand feeling and high price in the existing commonly used flame retardant fibers. Curl at ℃, self-carbonization under high temperature conditions, polyphosphoramide fiber that does not cause melt dripping and its solution method preparation method

Method used

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  • Phosphamide fiber and preparation method thereof through solution method
  • Phosphamide fiber and preparation method thereof through solution method
  • Phosphamide fiber and preparation method thereof through solution method

Examples

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Effect test

Embodiment 1

[0025] Put 105 mol of dimethyl methylphosphonate, 100 mol of 4,4'-diaminophenylphenyl phosphine oxide, and 1 mol of triethylamine into a polymerization kettle and mix evenly, react at 381°C for 10 hours, and vacuum extract at 80°C after the reaction After 2 hours of extraction, cool to room temperature to obtain a light yellow solid, which is a polyphosphoramide resin with a degree of polymerization of 1620. Dissolve the polyphosphoramide resin in N,N-dimethylformamide solvent, stir, filter, and defoam to obtain a spinning solution with a concentration of 14%; after the spinning solution is extruded by a spinning machine, it is passed through A coagulation bath composed of 15% water, 55% ethanol, and 30% methanol is formed. The temperature of the coagulation bath is 40°C, the passage time is 0.5 seconds, and the speed is 80m / min; continue to pass through the water bath with a temperature of 35°C for washing and oiling , obtain 0.83 denier polyphosphoramide fiber filaments, cut...

Embodiment 2

[0030] Put 100mol of dimethyl methylphosphonate, 100mol of 4,4'-diaminophenylphosphine oxide, and 1.5mol of triphenyl phosphate into a polymerization kettle and mix evenly, react at 379°C for 12h, and vacuum extract at 80°C after the reaction After 2 hours of extraction, cool to room temperature to obtain a light yellow solid, which is a polyphosphoramide resin with a degree of polymerization of 1970. Dissolve the polyphosphoramide resin in N, N-dimethylformamide solvent, stir, filter, and defoam to obtain a spinning solution with a concentration of 12%; after the spinning solution is extruded by a spinning machine, the The coagulation bath composed of 17% water, 51% ethanol, and 32% methanol is formed. The temperature of the coagulation bath is 45°C, the passage time is 0.6 seconds, and the speed is 67m / min; continue to pass through the water bath with a temperature of 35°C for washing and oiling , to obtain 1.26 denier polyphosphoramide fiber filament semi-finished products,...

Embodiment 3

[0035] Put 125mol of dimethyl methylphosphonate, 100mol of 4,4'-diaminophenylphenyl phosphine oxide, and 1.5mol of ferric trichloride into a polymerization kettle and mix evenly, react at 386°C for 8h, and vacuum at 80°C after the reaction After extraction for 1.5 hours, cool to room temperature after extraction to obtain a light yellow solid, which is a polyphosphoramide resin with a degree of polymerization of 630. Dissolve the polyphosphoramide resin in N, N-dimethylformamide solvent, stir, filter, and defoam to obtain a spinning solution with a concentration of 18%; after the spinning solution is extruded by a spinning machine, it is passed through The coagulation bath composed of 15% water, 60% ethanol, and 25% methanol is formed. The temperature of the coagulation bath is 30°C, the passing time is 0.8 seconds, and the speed is 50m / min; continue to pass through the water bath with a temperature of 35°C for washing and oiling , obtain 2.0 denier polyphosphoramide fiber fil...

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Abstract

The invention relates to a phosphamide fiber and a preparation method thereof through a solution method, and belongs to the technical field of chemical fiber forming processing. The fiber is composed of phosphamide macromolecules, and the structural formula of the fiber is shown in the specification, wherein n is an integer among 2-2000. The preparation method of the phosphamide fiber comprises the steps that firstly, under nitrogen protection, dimethyl methylphosphonate and 4,4'-diamine phenyl phosphine oxide are evenly mixed and react under the action of a catalyst to obtain phosphamide resin; secondly, the phosphamide resin obtained in the first step is dissolved in solvent, and stirring, filtering and defoaming are performed to prepare a spinning solution; thirdly, the prepared spinning solution is extruded through a spinning machine, formed through a coagulating bath and then washed to obtain a semi-finished phosphamide fiber; fourthly, the procedures of oiling, cutting, drying and packaging are continuously performed to obtain the phosphamide fiber.

Description

technical field [0001] The invention relates to a polyphosphoramide fiber and a solution method preparation method thereof, belonging to the technical field of chemical fiber molding and processing. Background technique [0002] Various industries such as petrochemical, natural gas, public security, and fire protection require fabrics with flame-retardant and fire-resistant properties. There are two main methods of manufacturing and processing flame-retardant blended fibers: one is to prepare flame-retardant fabrics after finishing cotton / polyester / nylon fabrics; the other is to use aramid fiber blends to prepare flame-retardant fabrics. [0003] At present, there are many varieties of flame-retardant and fire-resistant fabrics. Some commonly used fabrics with flame-retardant properties, such as spandex fiber cloth, acrylic fiber cloth, flame-retardant viscose fiber cloth, flame-retardant polyester cloth, etc., all these fibers have molten dripping, which will cause skin bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/76C08G79/04
Inventor 庄银江庄津丁功胜何济琛李苑育
Owner 深圳市名仕度服饰有限公司