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Fire resistant viscose acetal fibre spinning solution and preparation method thereof

A technology of viscose fiber and flame-retardant viscose, which is applied in the field of flame-retardant viscose fiber spinning solution and its preparation, and can solve the problems of unrealized industrial production of flame-retardant viscose fiber, adverse effects on fiber physical and mechanical properties, and stable dispersion low cost, good dispersibility and good flame retardant effect

Inactive Publication Date: 2011-07-27
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of imported flame retardants, and the problems of large particle size, poor dispersion stability, and adverse effects on the physical and mechanical properties of fibers in domestically produced flame retardants, flame-retardant viscose fibers have not been realized in China. large-scale industrial production
There is no literature report on this aspect abroad

Method used

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  • Fire resistant viscose acetal fibre spinning solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Dosage as follows: viscose fiber 100g (calculated as dry cellulose), flame retardant: tris (2-butoxyethyl) phosphate (TBEP) 10g, water glass containing 30% silica and a modulus of 3.18 50g, sodium alginate dispersant 0.05g;

[0020] Add sodium alginate to water glass and mix evenly, then add TBEP to the above water glass solution and mix evenly; vacuumize, let stand for 24 hours, and debubble

[0021] Add the above-mentioned flame retardant solution to the viscose fiber stock solution, vacuumize and stand still for 24 hours to remove air bubbles to obtain a flame-retardant viscose fiber spinning solution.

[0022] The flame-retardant viscose fiber spinning solution is spun into the coagulation solution, and kept at a temperature of 60°C for 30 minutes, and the flame-retardant viscose fiber filaments are post-treated according to the traditional spinning process.

[0023] According to GB / T 5454-1997 "Oxygen Index Method for Combustion Behavior Test of Textiles" and "Det...

example 2

[0025] Dosage as follows: viscose fiber 100g (calculated as dry cellulose), flame retardant: TBEP 15g; 42g of water glass containing 35% silica and a modulus of 1.6, 0.08g of hydroxyethyl cellulose dispersant;

[0026] Prepare flame-retardant viscose fiber spinning solution according to the method of Example 1.

[0027] Spinning and aftertreatment by the method for embodiment one again.

[0028] According to the method of Example 1, the limiting oxygen index (LOI) value of the flame-retardant viscose fiber is 32.8, and the vertical burning velocity is less than 0.003m / s.

example 3

[0030] Dose as follows: viscose fiber 100g (calculated as dry cellulose), flame retardant: TBEP12g, 45g of water glass containing 30% silica and a modulus of 2.5; carboxymethylcellulose dispersant 0.08g;

[0031] Prepare flame-retardant viscose fiber spinning solution according to the method of Example 1.

[0032] Spinning and aftertreatment by the method for embodiment one again.

[0033] According to the method of Example 1, the limiting oxygen index (LOI) value of the flame-retardant viscose fiber is 32.2, and the vertical burning velocity is <0.003m / s.

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Abstract

The invention relates to a fire resistant viscose acetal fibre spinning solution and a preparation method thereof. The viscose acetal fibre spinning solution is obtained by mixing sodium silicate and an organophosphorus ester compound to obtain a flame retardant and adding proper dispersant into viscose acetal fibres and has the characteristics of stable dispersion and no flocculation. The sodiumsilicate and organic phosphate flame retardant is an environmental-friendly product with no toxin, odor and armless and has good dispersivity and low cost. The viscose acetal fibres obtained during spinning with the spinning solution generate no harmful gases, can reduce pollution to environment, has good fire resistance and limited oxygen index being over 28 and achieves the national fire resistant requirement of textile.

Description

Technical field: [0001] The invention relates to a flame-retardant viscose fiber spinning solution and a preparation method thereof, including the selection of a flame retardant, the application of a dispersant, and the way of adding the flame retardant. Background technique: [0002] Due to the wide source of raw materials, viscose fiber has excellent hygroscopicity, air permeability, and clothing comfort. However, the limiting oxygen index of ordinary viscose fiber is only 17%, which is flammable, resulting in the production of viscose fiber textiles. Transportation, use and other aspects are subject to safety restrictions. At present, my country's viscose fiber industry is developing rapidly, and research on its flame retardant properties has also begun to be active. [0003] At present, the flame retardants used in flame-retardant viscose fibers mainly include halogen-antimony flame retardants, alkyl or aryl phosphonic acid derivatives, polyphosphonate, phosphazene poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08D01F1/07D01D1/02
Inventor 金鑫赵新颖
Owner BEIJING UNIV OF CHEM TECH
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