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Special-shaped monofilament section and production method thereof

A monofilament and slicing technology, which is applied in the direction of single-component polyamide rayon, rayon manufacturing, fiber chemical characteristics, etc., can solve the problem that is difficult to control, the relative viscosity can only be controlled between 0.02 and 0.03, and the relative viscosity distribution Poor uniformity, prone to problems such as wool and broken ends, easy to achieve molecular weight distribution, improved relative viscosity distribution uniformity, and reduced wool and broken ends

Inactive Publication Date: 2008-10-08
沈有清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To realize the chain stop effect on polymers, the required conditions are also high, which makes it difficult to control the molecular weight distribution of polymers, and the relative viscosity can only be controlled between 0.02 and 0.03, so that the relative viscosity distribution uniformity of polymers is poor.
Therefore, when spinning with this special-shaped monofilament chip, it is easy to have wool and broken ends, and the product quality is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First select 95 parts of caprolactam, 0.12 parts of barium sulfate, 0.10 parts of benzoic acid and 2 parts of deionized water for later use.

[0020] Then, put barium sulfate and 50% deionized water together, mix well, and make auxiliary agent A.

[0021] Afterwards, put benzoic acid and 10% caprolactam together, mix well, and make auxiliary agent B.

[0022] Afterwards, the remaining caprolactam and the remaining deionized water were put together, and mixed uniformly at a temperature of 75° C. under the protection of nitrogen to prepare solution C.

[0023] Afterwards, Add Auxiliary A and Auxiliary B to Solution C, and mix uniformly at a temperature of 75°C under nitrogen protection to prepare Solution D.

[0024] After that, the solution D was pumped into the polymerization device, and polymerized at a temperature of 260° C. for 18 hours to obtain a caprolactam high polymer.

[0025] Afterwards, the caprolactam high polymer is pumped into the underwater pelletizer w...

Embodiment 2

[0029] First select 98 parts of caprolactam, 0.15 parts of barium sulfate, 0.12 parts of benzoic acid and 2.5 parts of deionized water for later use.

[0030] Then, put barium sulfate and 50% deionized water together, mix well, and make auxiliary agent A.

[0031] Afterwards, put benzoic acid and 10% caprolactam together, mix well, and make auxiliary agent B.

[0032] Afterwards, the remaining caprolactam and the remaining deionized water were put together, and mixed uniformly at a temperature of 79° C. under the protection of nitrogen to prepare solution C.

[0033] Afterwards, Add Auxiliary A and Auxiliary B to Solution C, and mix them uniformly at a temperature of 79°C under the protection of nitrogen to prepare Solution D.

[0034] After that, the solution D was pumped into the polymerization device, and polymerized at a temperature of 268° C. for 20 hours to obtain a caprolactam high polymer.

[0035] Afterwards, the caprolactam high polymer is pumped into the underwate...

Embodiment 3

[0039] First select 101 parts of caprolactam, 0.17 parts of barium sulfate, 0.14 parts of benzoic acid and 3 parts of deionized water for later use.

[0040] Then, put barium sulfate and 50% deionized water together, mix well, and make auxiliary agent A.

[0041] Afterwards, put benzoic acid and 10% caprolactam together, mix well, and make auxiliary agent B.

[0042] Afterwards, the remaining caprolactam and the remaining deionized water were put together, and mixed uniformly at a temperature of 83° C. under the protection of nitrogen to prepare solution C.

[0043] Afterwards, Add Auxiliary A and Auxiliary B to Solution C, and mix uniformly at a temperature of 83°C under nitrogen protection to prepare Solution D.

[0044] Afterwards, the solution D was pumped into the polymerization device, and the polymerization reaction was carried out at a temperature of 275° C. for 24 hours to obtain a high polymer of caprolactam.

[0045] Afterwards, the caprolactam high polymer is pum...

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PUM

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Abstract

The invention discloses a special-shaped monofilament section and the production method of the special-shaped monofilament section, which is in particular the section used for the special-shaped monofilament and the production method of the special-shaped monofilament. The lactam, barium sulfate, benzoic acid, deionized water and other raw materials are used. First the barium sulfate and deionized water of 50% are put together and mixed evenly to be in the formation of an additive A. And then the benzoic acid and the lactam of 10% are put together and mixed evenly to be in the formation of an additive B. Afterwards, the rest of lactam and the remaining of deionized water are put together and mixed into a solution C. The additive A and B are added into the solution C and mixed into a solution D. Then, the solution D is in sequent poly-reaction and in the formation of a high lactam polymer. A metering pump is used to pump the high lactam polymer into an underwater cutter and the high lactam polymer is cut into particles. The particles are washed and extracted through an extraction column, and the extracted particles are blown dry with nitrogen to be in the formation of the special-shaped monofilament section. With the use of such special-shaped monofilament section, the silk span out has better quality.

Description

technical field [0001] The invention relates to a chemical fiber spinning raw material and a production method thereof. Specifically, it is a chip for producing special-shaped monofilament and its production method. Background technique [0002] At present, the chips used to produce shaped monofilaments are mainly composed of caprolactam, adipic acid and deionized water. Among them, adipic acid is a chain stopper. Since the boiling temperature of adipic acid is relatively high and as high as 330°C, the temperature required for the reaction is high. To realize the chain stop effect on polymers, the required conditions are also high, making it difficult to control the molecular weight distribution of polymers, and the relative viscosity can only be controlled between 0.02 and 0.03, so that the relative viscosity distribution uniformity of polymers is poor. Therefore, when spinning with this special-shaped monofilament chip, wool and broken ends are prone to occur, and the p...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/10C08G69/16C08K3/30
Inventor 沈有清王国新黄伟忠
Owner 沈有清
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