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Combustion inhibitor for cellulose base fiber fabric and its synthesis method

A technology of cellulose fibers and flame retardants, applied in the field of flame retardants and their synthesis, can solve the problems of product crude oil performance degradation, large amount of flame retardant additives, low flame retardant efficiency, etc., and achieve stable performance and good flame retardant The effect of simple performance and process

Inactive Publication Date: 2008-11-19
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To this end, researchers began to study and develop low-toxic, halogen-free, environmentally friendly and highly efficient flame retardants for cellulose, such as the STR-27 flame retardant successfully synthesized by the Shanghai Textile Research Institute and the flame retardant developed by Lenzing. The flame retardant Sandoflam (Sandoflam) 5060, these two flame retardants contain sulfur and phosphorus elements and do not contain halogens. In the preparation process, the amount of flame retardant additive required is relatively large (generally more than 20% of the weight of cellulose, or higher, to meet the flame retardant requirements), so the flame retardant efficiency is not high, and the cost is also relatively large. The proportion of flame retardant added will also reduce the performance of product crude oil

Method used

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  • Combustion inhibitor for cellulose base fiber fabric and its synthesis method
  • Combustion inhibitor for cellulose base fiber fabric and its synthesis method
  • Combustion inhibitor for cellulose base fiber fabric and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Weigh 2 moles of hydroxysilicone oil (the degree of polymerization is 2), and weigh the raw materials hydroxysilicone oil (the degree of polymerization is 2), phosphorus oxychloride, and diethanolamine according to the amount ratio of substances of 1:2:4;

[0054]First, hydroxysilicone oil and 1% catalyst anhydrous aluminum chloride, which account for 1% of the mass of hydroxysilicone oil, are added to the reaction vessel, the tail gas absorption device is installed, the reaction stirrer is turned on, and phosphorus oxychloride is slowly added dropwise at room temperature, within 2.5 hours After dropping, gradually warming up to about 65°C, heat preservation reaction at this temperature until no hydrogen chloride gas is emitted, to obtain intermediate product (I);

[0055] Then dihydropyran and diethanolamine are weighed according to the mass ratio of 1: 1.2, and the catalyst anhydrous cupric chloride accounting for 3% of the weight of diethanolamine is dissolved in the ...

Embodiment 2

[0063] Weigh 2 moles of hydroxysilicone oil (the degree of polymerization is 3), and weigh the raw material hydroxysilicone oil (the degree of polymerization is 3), phosphorus oxychloride, and dimethanolamine according to the ratio of substances to 1:2:4;

[0064] First, hydroxysilicone oil and 3% catalyst anhydrous aluminum chloride, which accounts for 3% of the mass of hydroxysilicone oil, are added to the reaction vessel, the tail gas absorption device is installed, the reaction stirrer is turned on, and phosphorus oxychloride is slowly added dropwise at room temperature, within 3 hours After dripping, gradually warming up to about 68 ℃, heat preservation reaction at this temperature until no hydrogen chloride gas is released, to obtain the intermediate product (I);

[0065] Then dihydropyran and dimethanolamine are weighed according to the ratio of substance to 1: 1.2, and they are dissolved in the solvent dichloromethane together with the anhydrous catalyst cupric chloride...

Embodiment 3

[0073] Weigh 2 moles of hydroxysilicone oil (the degree of polymerization is 4), and weigh the raw material hydroxysilicone oil (the degree of polymerization is 4), phosphorus oxychloride, and dipropanolamine according to the amount ratio of the substance to be 1:2:4;

[0074] First, hydroxysilicone oil and 2% catalyst anhydrous aluminum chloride accounting for the mass of hydroxysilicone oil are added to the reaction vessel, the tail gas absorption device is installed, the reaction stirrer is turned on, and phosphorus oxychloride is slowly added dropwise at room temperature, within 2 hours After dropping, gradually warming up to about 70°C, heat preservation reaction at this temperature until no hydrogen chloride gas is released, to obtain intermediate product (I);

[0075] Then dihydropyran and dipropanolamine are weighed as 1: 1.2 according to the mass ratio of dipropanolamine, and the catalyst anhydrous cupric chloride accounting for 1.5% of the mass of dipropanolamine is d...

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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Abstract

The invention discloses flame retardant for cellulosic fiber fabric. The structure of the flame retardant can be expressed in the following general formula, wherein m is more than or equal to 1 and less than or equal to 4; n is more than or equal to 2 and less than or equal to 4. The flame retardant ensures that: fabrics after finishing can have good durability and flame retardant, as well as soft smooth hand feeling, and can not release free formaldehyde or contain halogen elements, thereby meeting the requirements of ecologic flame-retardant textiles. Meanwhile, the invention also discloses a method for preparing the flame retardant.

Description

[0001] The invention relates to a flame retardant and a synthesis method thereof, in particular to a flame retardant for bamboo, cotton, hemp, viscose and other cellulose fiber fabrics and a synthesis method thereof. Background technique [0002] Flame retardants are a class of additives that prevent polymeric materials from igniting or inhibit the spread of flame. At present, there are many flame retardants for cellulose produced or researched at home and abroad, some of which are flame retardants containing phosphorus and halogens, such as tetrahydroxyl, which was developed by Albright & Wilson in 1955. Phosphorus methyl chloride (THPC), the flame retardant has a good flame retardant effect on cellulose, but it will release formaldehyde during use, and the halogen-containing flame retardant will produce toxic gas during thermal decomposition; there are also Halogen-free, phosphorus- and nitrogen-containing flame retardants, such as N-dimethylolphosphonoacrylamide (NMDPPA, or...

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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IPC IPC(8): D06M13/513C07F9/24D06M101/06
Inventor 周向东易辉唐人成
Owner SUZHOU UNIV
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