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Preparation method of water-insoluble magnesium silicate flame-retardant viscose fibers

A flame-retardant viscose fiber and non-water-soluble technology, which is applied in the field of preparation of water-insoluble metal silicate flame-retardant viscose fiber, can solve the difficulty of acid bath recovery in the production line, affect the physical properties of fibers, and unstable product quality, etc. problem, to achieve the effect of changing the thermal cracking process, good flame retardant effect, and easy control

Active Publication Date: 2014-03-26
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned flame retardant mechanism determines that there is inevitably the outstanding problem of excessive addition of inorganic flame retardants in this flame retardant viscose fiber product, which in turn directly affects the physical properties of the fibers; moreover, the amount of inorganic flame retardants added Too much, on the one hand, causes a large amount of inorganic flame retardants to adhere to the surface of the cortex of the fiber, the flame retardant effect is greatly reduced after spinning or fabrics, and the product quality is unstable; on the other hand, a large amount of inorganic flame retardants are solidified Entering the coagulation bath during the forming process will bring about a series of problems such as difficulty in recycling the acid bath in the production line and rising production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The amount of magnesium silicate added is 5% of the flame-retardant viscose fiber;

[0035] The sulfuric acid content is 80g / L, sodium sulfate 230g / L, zinc sulfate 20g / L, and the balance is water; the coagulation acid bath temperature is 10℃-50℃, and the coagulation time is 3 seconds;

[0036] Add 2.2 grams of magnesium silicate to an appropriate amount of deionized water, and ultrasonically disperse for 5 minutes to obtain a magnesium silicate dispersion with a magnesium silicate content of 20%, which is added to the content to 500 grams of α-cellulose content of 8.35% ( Mass), in a viscose solution with a sodium hydroxide content of 5.8% (mass), fully stir for 1 hour at 10°C-40°C, mix to obtain a viscose-magnesium silicate dispersion, and then at 10°C-30°C Under vacuum, carry out vacuum degassing treatment for 20 minutes to remove the gas contained in the dispersion to obtain viscose / MgSiO 3 Mix the spinning solution. Adhesive / MgSiO 3 The mixed spinning solution is squeez...

Embodiment 2

[0038] The amount of magnesium silicate added is 40% of the flame-retardant viscose fiber;

[0039] The sulfuric acid content is 130g / L, sodium sulfate 340g / L, and the balance is water; the temperature of the coagulation acid bath is 10℃-50℃, and the coagulation time is 10 seconds;

[0040] Add 27.83 grams of magnesium silicate to an appropriate amount of deionized water, and ultrasonically disperse for 20 minutes to obtain a magnesium silicate dispersion with a magnesium silicate content of 50%, which is added to 500 grams of a-cellulose content of 8.35% (mass), In a viscose solution with a sodium hydroxide content of 5.8% (mass), fully stir for 1 hour at 10°C-40°C, mix to obtain a viscose-magnesium silicate dispersion, and then carry out at 10°C-30°C Vacuum degassing treatment for 20 minutes to remove the gas contained in the dispersion to obtain viscose / MgSiO 3 Mix the spinning solution. Adhesive / MgSiO 3 The mixed spinning solution is squeezed into the coagulation acid bath and...

Embodiment 3

[0042] The amount of magnesium silicate added is 33.3% of the flame retardant viscose fiber;

[0043] The sulfuric acid content is 80g / L, sodium sulfate 240g / L, zinc sulfate 15g / L, the balance is water; the coagulation acid bath temperature is 10℃-50℃, and the coagulation time is 5 seconds;

[0044] Add 20.88 grams of magnesium silicate to an appropriate amount of deionized water, and ultrasonically disperse for 15 minutes to obtain a magnesium silicate dispersion with a magnesium silicate content of 50%, which is added to 500 grams of α-cellulose with a content of 8.35% (mass), In a viscose solution with a sodium hydroxide content of 5.8% (mass), fully stir for 1 hour at 10°C-40°C, mix to obtain a viscose-magnesium silicate dispersion, and then carry out at 10°C-30°C Vacuum degassing treatment for 20 minutes to remove the gas contained in the dispersion to obtain viscose / MgSiO 3 Mix the spinning solution. Adhesive / MgSiO 3 The mixed spinning solution is squeezed into the coagulati...

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Abstract

The invention discloses a preparation method of water-insoluble magnesium silicate flame-retardant viscose fibers. The preparation method comprises the steps of adding micron-scale magnesium silicate powder of which the particle size is less than 5 microns into an appropriate amount of deionized water, and performing ultrasonic dispersion to prepare magnesium silicate dispersion liquid; adding the prepared magnesium silicate dispersion liquid which accounts for 5-40% of the mass of the flame-retardant viscose fibers into a viscose solution, and fully stirring; performing subsequent processes by adopting conventional technical means to finally prepare a flame-retardant viscose fiber product. In the flame-retardant viscose fibers disclosed by the invention, magnesium metal ions play a major role in flame retardance. The preparation method of the water-insoluble magnesium silicate flame-retardant viscose fibers, disclosed by the invention, is simple in process, easy to operate and control and relatively low in manufacturing cost; the flame-retardant viscose fibers prepared by adopting the method can achieve relatively good heat-resistant and flame-retardant effects, can not release poisonous gas in use, and can not cause environmental pollution after being abandoned.

Description

Technical field [0001] The invention relates to a method for preparing a non-water-soluble metal silicate flame-retardant viscose fiber, in particular to a method for preparing a non-water-soluble magnesium silicate flame-retardant viscose fiber. Background technique [0002] In recent years, the massive construction of high-rise residences and hotels and the rapid development of various vehicles have greatly promoted the development of flame retardant fiber technology. Its application fields have also developed from military, industry, and fire protection to home textiles, transportation and decoration materials in public places. With the rapid development and continuous improvement of the interior decoration industry, curtains, carpets, and cloth decoration have long been popularized from high-end places such as hotels to more and more home decorations. In recent years, fires caused by textiles in countries around the world have been increasing. The results of an investigatio...

Claims

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Application Information

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IPC IPC(8): D01F2/08D01F1/07D01D1/02D01D5/06
Inventor 夏延致纪全李春霞马晓梅宋翠翠全凤玉
Owner QINGDAO UNIV
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