Large-diameter polyvinyl alcohol monofilament and production method thereof

A polyvinyl alcohol and production method technology, applied in the direction of single-component synthetic polymer rayon, chemical post-treatment of synthetic polymer rayon filament, wet spinning method, etc., can solve the unsatisfactory strength and toughness of monofilament, which affects and other problems, to achieve the effect of improving strength and toughness, increasing strength, and sufficient crystallization

Active Publication Date: 2014-04-23
NANTONG NTEC MONOFILAMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the strength and toughness of the prepared monofilament are not satisfactory, which affects its application prospects in industry, textile and other fields.

Method used

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  • Large-diameter polyvinyl alcohol monofilament and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0021] 98% polyvinyl alcohol particles and 2% modified nano-TiO 2 According to the production method of Example 1, polyvinyl alcohol monofilaments were obtained. The diameter of the monofilaments was 2.8 m, the strength of the monofilaments was 6 cN / dtex, and the elongation of the monofilaments was 25%.

Embodiment 3

[0023] 97% polyvinyl alcohol particles and 3% modified nano-TiO 2 According to the production method of Example 1, polyvinyl alcohol monofilaments were obtained. The diameter of the monofilaments was 2.8 mm, the strength of the monofilaments was 6 cN / dtex, and the elongation of the monofilaments was 25%.

Embodiment 4

[0025] 99% polyvinyl alcohol particles and 1% modified nano-TiO 2 According to the production method of Example 1, polyvinyl alcohol monofilaments were obtained. The diameter of the monofilaments was 2.8 mm, the strength of the monofilaments was 5 cN / dtex, and the elongation of the monofilaments was 25%.

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Abstract

The invention discloses a large-diameter polyvinyl alcohol monofilament and a production method thereof. The monofilament comprises 97-99.5 percent by weight of polyvinyl alcohol and 3-0.5 percent by weight of modified nanometer inorganic additives, wherein the monofilament is 0.5-5 millimeters in diameter, 3-6.7 cN / dtex in breaking strength and 15-35 percent in the elongation at break, and the strength and toughness of the product can be improved remarkably by adding the nanometer inorganic additives. The production method mainly comprises the treatment processes of polyvinyl alcohol dissolving, defoaming, wet spinning, stretching, winding and acetalation. Furthermore, a two-step method is adopted in a stretching procedure. In a first stretching step, the stretching rate is low. In a second stretching step, hot air stretching is adopted, and the stretching rate is high, so that the large-diameter polyvinyl alcohol monofilament can be crystallized fully, and the strength of the monofilament is enhanced.

Description

technical field [0001] The invention relates to a large-diameter polyvinyl alcohol monofilament and a production method thereof, belonging to the field of polymer fibers. Background technique [0002] Polyvinyl alcohol is reflected in the size of the molecular weight and the non-complete substitution of the carboxyl group in the alcoholysis, thus forming a variety of high viscosity, low viscosity, high degree of alcoholysis and low degree of alcoholysis. Since polyvinyl alcohol is a typical polyol, it is different from Carbohydrates and their similarities are miscible with water, and because they are polymers, the solution dissolved in water has a relatively high viscosity. Water-miscible polymer materials are extremely rare both in nature and in industrial synthesis. [0003] Polyvinyl alcohol is highly polymerized to form polyvinyl alcohol monofilament, which has good surface properties, is easy to bond firmly with other materials, and has good acid and alkali resistance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/50D01F1/10D01F11/06D01D1/02D01D1/10D01D5/06D01D5/12
Inventor 马海燕
Owner NANTONG NTEC MONOFILAMENT TECH CO LTD
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