High-viscosity low-rheology polyhexamethylene adipamide special fiber and production method thereof

A polyhexamethylene adipamide, special fiber technology, applied in the direction of single-component polyamide rayon, fiber processing, fiber chemical characteristics, etc. Reduce and other problems to achieve the effect of improving spinnability and production efficiency

Active Publication Date: 2015-04-08
杭州帝凯工业布有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the relative viscosity is blindly reduced, the molecular weight of the polymer is reduced, and the obtained fiber strength and other indicators are very poor, which cannot meet the technical problems such as industrial use conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Embodiment: the production method of the high-viscosity low-rheology polyhexamethylene adipamide special fiber of this example, its steps are:

[0026] a. Add 0.05 parts by weight of a ketone stabilizer, 0.10 parts by weight of a brominated anti-aging agent, and 0.02 parts by weight of a phosphate molecular weight regulator into the first blending tank, at room temperature, add an equal volume of deionized water, and stir for 8 minutes for later use; Add 0.4 parts by weight of glutaric acid and 1.1 parts by weight of adipic acid into the second blending tank according to the formula ratio, and stir at room temperature for 8 minutes for later use; add 1.5 parts by weight of hexamethylenediamine into the salt-forming reactor according to the formula ratio, Add ion-free water according to the concentration requirement, stir slowly, and the stirring speed is 35rpm; slowly add the mixture in the second blending tank to the salt-forming reactor, control the temperature at 50°...

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PUM

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Abstract

The invention relates to polyhexamethylene adipamide, and especially relates to high-viscosity low-rheology polyhexamethylene adipamide special fiber and a production method thereof. The technical scheme mainly solves the technological problems that in the prior art, in a polymerization manufacture and spinning process of polyarmide fiber, in order to obtain a high-molecular-weight polymer, the polymer is usually extremely high in viscosity and rheological motion resistance, thereby leading to extremely bad spinnability, and especially in the case that the polymer relative viscosity is 104-118, normal spinning production cannot be realized; and if the relative viscosity is blindly reduced, the polymer molecular weight is reduced, strength and other indexes of the prepared fiber are extremely bad, and thus industrialized usage conditions cannot be satisfied, and the like. The disclosed fiber comprises the following compositions in parts by weight: 0.2-0.6 part of glutaric acid (C5H8O4), 0.8-1.5 parts of adipic acid (C6H16N2), and 0.9-1.9 parts of hexylenediamine (C6H10O4). The polyhexamethylene adipamide special fiber is prepared from the three above compositions by performing neutralization reaction, polymerization, spinning and other steps.

Description

technical field [0001] The invention relates to polyhexamethylene adipamide, in particular to a special high-viscosity and low-rheology polyhexamethylene adipamide fiber and a production method thereof. Background technique [0002] In general, polyamide (nylon) has excellent mechanical properties and durability, so it is widely used in fibers for industrial raw materials such as tire cords and fibers for carpets, and is also widely used in the manufacture of molded products. On the other hand, due to its excellent softness and dyeability, it is also widely used as a fiber for clothing, especially as a fiber for underwear. Polyhexamethylene adipamide (nylon 66) is a representative polyamide, and its use is also used as fibers for industrial raw materials, fibers for carpets, fibers for clothing and their molded products. However, in the current polyamide fiber manufacturing and spinning process, in order to obtain high-molecular-weight polymers, the polymer viscosity is oft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10C08G69/26C08G69/28D01D5/00D01D5/16
Inventor 董丽琴柴秀堂徐小波
Owner 杭州帝凯工业布有限公司
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