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Preparation method of antiflaming cellulose non-woven cloth

A technology of flame-retardant cellulose and non-woven fabrics, which is applied in the manufacture of non-woven fabrics, artificial filaments in cellulose solution, fire-resistant and flame-retardant filaments, etc., and can solve the problems of shortening flame-retardant time, affecting fibers, and poor compatibility and other problems, to achieve the effect of excellent flame retardant performance, short process flow and high production efficiency

Inactive Publication Date: 2013-06-26
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame-retardant powder used in the preparation process is an inorganic nano-material, which has poor compatibility with polymers, and there will be a problem of poor dispersion of the flame-retardant powder. This defect will also affect other aspects of the fiber. and the above-mentioned flame retardant powder and cellulose molecules are combined by physical effects (such as van der Waals force, intermolecular force), so that as the nonwoven fabric is used for a long time and the number of times of washing increases, the loss of flame retardant is serious , its content in the fiber is reduced; the flame retardant effect of the fiber is also reduced, the flame retardant time is shortened, and there are certain safety hazards

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The pulverized cotton pulp with a degree of polymerization of 600, 5,5-dimethyl-2-phospha-1,3-dioxan-2-ylallyl phosphate and [AMIM]Cl ionic liquid were adjusted to 10: Stir evenly in a high-speed mixer at a ratio of 5:90 and vacuum dry it at a drying temperature of 80°C for 4 hours; add 2wt% potassium carbonate to the dried mixture; feed the mixture containing potassium carbonate Into a twin-screw extruder with a length-to-diameter ratio of 50 to simultaneously dissolve, react and blend cellulose to obtain a flame-retardant cellulose spinning solution; the extruder feed section, melting section, metering section and spinning die The temperature of the head is 80°C, 90°C and 100°C, and the screw speed is 25 rpm. The spinning solution is filtered and sent to the spinning die. The temperature of the spinning die is 120°C. The solution is stretched and refined, collected into a net on a receiving device, coagulated, washed with water and heat-set to obtain the flame-retardan...

Embodiment 2

[0034] The crushed wood pulp with a degree of polymerization of 900, 5,5-dimethyl-2-phospha-1,3-dioxan-2-yl acrylamide methoxy phosphate and [BMIM]Cl ionic liquid Stir evenly in a high-speed mixer at a ratio of 20:2:80, and vacuum-dry it at a drying temperature of 80°C and a time of 4h; add 1wt% potassium carbonate to the dried mixture; add the potassium carbonate The mixture is fed into a twin-screw extruder with a length-to-diameter ratio of 95 to simultaneously dissolve, react and blend cellulose to obtain a flame-retardant cellulose spinning solution; the extruder feed section, melting section, metering section and spinning The temperature of the silk die is 110°C, 120°C and 130°C, and the screw speed is 10 rpm; the spinning solution is filtered and sent to the spinneret die. The temperature of the spinning die is 140°C. After extrusion, The hot air stretches and refines the solution, collects and forms a net on a receiving device, coagulates, washes with water, and heats t...

Embodiment 3

[0037] The crushed hemicellulose with a degree of polymerization of 400, 5,5-dimethyl-2-phospha-1,3-dioxan-2-yl acrylamide methoxy phosphate and [EMIM] Ac ionic liquid Stir evenly in a high-speed mixer according to the ratio of 15:5:85, and vacuum-dry it. The drying temperature is 80°C and the time is 4h; 1.5wt% potassium carbonate is added to the dried mixture; it will contain carbonic acid The potassium mixture is fed into a twin-screw extruder with a length-to-diameter ratio of 20 to simultaneously dissolve, react and blend cellulose to obtain a flame-retardant cellulose spinning solution; the extruder feed section, melting section and metering section And the spinning die temperature is 100 ℃, 110 ℃ and 120 ℃ respectively, the screw speed is 15 rpm; the spinning solution is filtered and sent to the spinneret die, the spinning die temperature is 130 ℃; The solution is stretched and refined by hot air, collected into a net on a receiving device, coagulated, washed with water,...

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Abstract

The invention discloses a preparation method of antiflaming cellulose non-woven cloth. The method includes the following steps: 1, fire retardant, cellulose and solvent are mixed uniformly at a certain mass ratio, a twin-screw extruder is used for enabling the cellulose to dissolve, react and blend, and antiflaming cellulose spinning solution is obtained, wherein the fire retardant is a novel halogen-free fire retardant, the cellulose is one of wood pulp, cotton pulp and hemicellulose, the solvent is ionic liquid, mass ratio of the fire retardant and the cellulose is 1-5:10, and mass ratio of the cellulose and the solvent is 5-20:95-80; and 2, the spinning solution is filtered and then is sent to a filament spraying mold head, and a non-woven cloth made of antiflaming cellulose is prepared through a melt-blow spinning technology. The preparation method has the advantages that operation is simple, procedure is short, industrial production is easy to implement, antiflaming cellulose non-woven cloth prepared through the method has good heat stability and excellent antiflaming performance, no toxic gas is produced in antiflaming, and environmental protection requirement is satisfied.

Description

Technical field [0001] The invention relates to a method for preparing a cellulose nonwoven fabric, in particular to a method for preparing a flame-retardant cellulose nonwoven fabric. Background technique [0002] Cellulose non-woven fabric is a kind of cellulose product, which has good skin contact, wearing comfort, physiological safety, moisture absorption and easy finishing, and its products are easy to biodegrade. It cannot be fully equipped with a series of synthetic fibers. Because of its characteristics, it is widely used in clothing, medical, nursing, sanitary products, cosmetics and other industrial fields. However, because cellulose nonwovens are very easy to burn in fire, the limiting oxygen index is usually around 17, and its combustion will bring fire hazards and serious economic losses to human society, which greatly limits its wide application. With the continuous improvement of people's living standards and the continuous enhancement of flame retardant awareness...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4258D01D1/04D01F2/02D01F1/07
Inventor 程博闻陆飞宋俊纪秀杰王乐军高磊
Owner TIANJIN POLYTECHNIC UNIV
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