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Stock solution for spinning phenolic fibers (PFs) and preparation method for stock solution

A technology of phenolic fiber and spinning dope, applied in the fields of fiber chemical characteristics, textiles and papermaking, single-component synthetic polymer rayon, etc., can solve the problems of phenolic fiber flame retardancy, thermal insulation performance and strength, and meet the synthesis conditions Mild and controllable, short synthesis cycle, good dispersion effect

Active Publication Date: 2012-07-04
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the addition of this polymer cannot greatly affect the flame retardancy, heat insulation performance and strength of the phenolic fiber, which poses a challenge to the preparation of spinning dope with excellent performance

Method used

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  • Stock solution for spinning phenolic fibers (PFs) and preparation method for stock solution
  • Stock solution for spinning phenolic fibers (PFs) and preparation method for stock solution
  • Stock solution for spinning phenolic fibers (PFs) and preparation method for stock solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: 60g phenol, 210gPVA solution (12wt%) and 5gNaOH are put into reactor, under the stirring of 300r / min, temperature is raised to 90 ℃, then add 74g formaldehyde solution (30wt%), temperature is raised to 95 ℃, add 18.5g formaldehyde solution (30wt%) after reacting for 60min, adjust the temperature to 95℃, react for 100min and cool to room temperature within 1min to obtain a stock solution with a viscosity of 12000mPa.s.

Embodiment 2

[0022] Embodiment 2: 60g phenol, 835gPVA solution (18wt%) and 4.8g KOH are put into reactor, under the agitation of 800r / min, temperature is raised to 80 ℃, then add 44.5g formaldehyde solution (40wt%), lower temperature Raise to 90°C, add 11g of formaldehyde solution (40wt%) after reacting for 100min, adjust the temperature to 92°C, react for 40min and then cool to room temperature within 5min to obtain a stock solution with a viscosity of 25000mPa.s.

Embodiment 3

[0023] Embodiment 3: with 60g phenol, 640gPVA solution (6wt%) and 20g NH 3 ·H 2 O is put into reactor, under the stirring of 500r / min, temperature is raised to 85 ℃, then add 84g formaldehyde solution (37wt%), temperature is raised to 96 ℃, add 36g formaldehyde solution (37wt%) after reaction 40min, will Adjust the temperature to 100°C, react for another 120 minutes, and then cool to room temperature within 3 minutes to obtain a stock solution with a viscosity of 10,000 mPa.s.

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Abstract

The invention relates to a stock solution for spinning phenolic fibers (PFs). The stock solution comprises the following raw materials: phenol, a 30 to 40 weight percent formaldehyde solution, a 6 to 18 weight percent polyvinyl alcohol (PVA) solution and a catalyst in a mass ratio of 100:(90-200):(40-250):(8-40). The stock solution has the advantages that: spinnability is high, the spinnable viscosity interval is wide, and the intrinsic properties of the PFs are not influenced by an additive.

Description

technical field [0001] The invention belongs to the preparation of a stock solution and a preparation method thereof, in particular to a high-quality stock solution suitable for solution spinning and electrospinning for spinning phenolic fibers and a preparation method thereof. Background technique [0002] Phenolic fibers (PFs) are fibers with a three-dimensional cross-linked network structure obtained by spinning and curing phenolic resins. The cross-linking degree is greater than 85%, and it is golden yellow. It was born in 1968 when Dr. J.Economy of American Corboyundum Corporation (Corboyundum) was studying aerospace materials. Phenolic resin can effectively solve this problem, and phenolic fiber was developed under this background, and was rated as one of the top ten inventions of synthetic fiber in the world in 1969. [0003] The special three-dimensional cross-linked structure makes phenolic fiber have excellent properties such as flame retardancy, heat insulation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/10D01F6/94
Inventor 史景利马昌宋燕张东卿郭全贵
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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