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Intumescent phosphorus-containing grafted polymer flame retardant as well as preparation and application thereof

A polymer flame retardant, intumescent technology, used in fiber types, textiles and paper making, fiber processing, etc. Excellent performance, smooth and smooth coating, excellent decorative effect

Inactive Publication Date: 2015-03-25
CHENGDU TEXTILE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of complicated process, poor flame retardant effect, poor fabric comfort and safety, and high cost in the flame retardant of heavy fabrics
[0005] Traditional intumescent flame retardants are applied to fabrics. The fabrics are not resistant to washing, blisters, and migration. Under the action of light, heat, humidity, and mechanical external forces, the flame retardants will be lost or degraded. decline
The above flame retardant coating agents either contain halogen elements, or formaldehyde resins, or use organic solvents, or use a large amount of inorganic flame retardants, so that the coating has obvious surface migration, or the flame retardant treatment process is currently not yet available. Cannot be industrialized

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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  • Intumescent phosphorus-containing grafted polymer flame retardant as well as preparation and application thereof
  • Intumescent phosphorus-containing grafted polymer flame retardant as well as preparation and application thereof
  • Intumescent phosphorus-containing grafted polymer flame retardant as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Synthesis of PUPVA:

[0034] Weigh 50 parts of polyvinyl alcohol 1799 and wet it with a small amount of water, add it to 200 parts of water, stir and dissolve it into a colorless transparent liquid at 50-90°C; add 25 parts of ammonium polyphosphate, and then add 10 parts of urea phosphate to mix Fully stir in the liquid; disperse into a uniform transparent liquid, transfer to a glass plate and dry at 50-100°C, then bake at 110-150°C for 10-30 minutes to obtain foaming white modified polyvinyl urea salt PUPVA, yield 92%. The infrared spectrum data of modified polyvinyl urea salt PUPVA are as follows: 3510-3050, 2915, 2898, 1689, 1472, 1321, 1133, 1089, 982. PUPVA's 1 H-NMR data: the displacement value is 1.4~1.5ppm (m, J=42.2Hz, 2H, CH 2 ) and 3.7~3.8ppm (d, J=24.5Hz, 1H, CH) peaks are respectively -CH on the main chain 2 - and -CH- peaks, while the chemical shift is between 4.6 and 6.3ppm (d, br, 2H, -NH 2 , -OH) are OH and -NH in PUPVA 2 , the weak peak at 7.2ppm...

Embodiment 2

[0043] Synthesis of PMAPVA:

[0044] Weigh 30g of polyvinyl alcohol 2099 and wet it with a small amount of water, add it to 200 parts of water, stir and dissolve it into a colorless transparent liquid at 80°C; add 15 parts of melamine phosphate and 10 parts of ammonium polyphosphate, and then add 5 parts of Add the dicyandiamide catalyst into the mixed liquid and stir well; disperse into a uniform transparent liquid, transfer it to a glass dish, dry it at 100°C, and bake it at 130°C for 30 minutes to obtain a foamed white modified polyethylene melamine salt PMAPVA. The rate is 94%. The infrared spectrum data of modified polyethylene melamine salt PMAPVA are as follows: 3620-3150, 2917, 2894, 1676, 1454, 1331, 1134, 1079, 982, 645. PMAPVA 1 H-NMR data: 1.4~1.5ppm (m, J=34.1Hz, 2H, CH 2 ) and 3.7~3.8ppm (d, J=23.3Hz, 1H), 4.7~6.2ppm (d, br, 2H), 7.1ppm.

[0045] Flame retardant finishing of fabrics:

[0046] Weigh 40g of PMAPVA and add it to 100 parts of water, fully stir a...

Embodiment 3

[0052] Synthesis of APPHPMC:

[0053] Weigh 60g of hydroxypropyl methylcellulose (HPMC) and moisten it with a small amount of water, add it to 200 parts of water, stir and dissolve it into a colorless transparent liquid at 90°C; add 15 parts of ammonium polyphosphate, and then add 5 parts Add urea into the mixture and stir thoroughly; disperse into a uniform transparent liquid, transfer to a glass dish and dry at 100°C, then bake at 130°C for 30 minutes to obtain foaming white modified hydroxypropyl methylcellulose APPHPMC with a yield of 97 %. The infrared spectrum data of APPHPMC are as follows: 3610-3130, 2918, 2896, 1684, 1465, 1327, 1154, 1083, 889, 765. APPHPMC's 1 H-NMR data: 1.3~1.5ppm (m, J=40.2Hz, 2H, CH 2 ) and 3.6~3.7ppm (d, J=28.4Hz, 1H), 4.8~6.3ppm (d, br, 2H), 7.3ppm.

[0054] Flame retardant finishing of fabrics:

[0055] Weigh 40g of APPHPMC and add it to 100 parts of water, fully stir and dissolve at 90°C; then add 3 parts of anionic surfactant, then add...

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 an intumescent phosphorus-containing grafted polymer flame retardant prepared a preparation method and a flame retardant treatment process thereof. The preparation method comprises the following step: carrying out high-temperature reaction on ammonium polyphosphate, polyphosphoric acid, urea phosphate, melamine phosphate, guanidine phosphate modified polyvinyl alcohol and esterified cellulose to obtain a loose, soft, porous and spumous intumescent phosphate grafted polymer flame retardant. The yield is 92-97%. The flame retardant is completely dissolved in hot water, and then a retardant synergist, a thickening agent and other auxiliaries are added in sequence and are fully stirred to obtain transparent flame-retardant liquid. A fabric is impregnated with finishing liquid or subjected to coating treating, and then is dried and roasted at a proper temperature to obtain a flame-retardant fabric. After being finished by the flame retardant, the fabric has the advantages that the oxygen index is 30% above, the vertical burning can reach B1 level, and no formaldehyde is achieved, so that the flame retardant can be widely applied to vehicle interior decoration fabrics, seat cushions, curtain fabrics, and the like.

Description

technical field [0001] The invention relates to a flame retardant finishing technology of textiles, in particular to an expansion type phosphorus-containing grafted polymer flame retardant and its preparation and application. Background technique [0002] With the continuous development of the textile industry, textiles are widely used in industrial and civil fields such as furniture, architectural decoration, and vehicle decoration. Due to the flammability of textiles, more than 20% of fire accidents in the world are caused or expanded by the burning of textiles. Therefore, the flame retardant function of textiles can delay the spread of fire, extend the fire escape time by 10 to 15 times, and weaken the fire hazard. It is extremely important to eliminate fire hazards and protect people's lives and property. So far, many textile flame retardants and finishing processes have been developed. Although their flame retardant performance can meet the requirements of some uses, t...

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): C08G79/04D06M15/667D06M11/71D06M11/72D06M11/79D06M11/82D06M13/364D06M13/148D06M101/06D06M101/32D06M101/34D06M101/20
Inventor 李强林黄方千冯西宁郑光洪伏宏斌
Owner CHENGDU TEXTILE COLLEGE
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