News Details
Polyester flame retardant
2017-10-2 17:01:05
Polyester flame retardant
In recent years, fire caused by textiles has been increasing. According to statistics, the death rate of textile caused by fire accounts for 50%. Dacron fiber is the most used in synthetic fiber, widely used in clothing, carpets and decorative fabrics, but polyester fiber is easy to burn, and its combustion heat is 23. 8Wg, with a limited oxygen index of 20% to 22%, so once it burns, it's more than a cotton fiber. 8kJ/g, the oxygen control index is 17%, a 19%) more violent... . For this reason, it is very important to arrange the flame retarding of polyester textiles. Dacron flame retardants mainly include phosphorus and halogen.
Because of halogen flame retardants will be generated in the process of actual combustion halolide gases, can produce serious choke the breath of human body, so now countries are stepping up research and durable without halogen flame retardant agent, predictable of halogen flame retardants will be safer of phosphorous flame retardants.
When the polyester fiber burns, it produces free radicals. The activity of this free radical will continuously destroy the binding of the carbon, causing the chain decomposition reaction to produce combustible gas. Including phosphorus-containing flame retardants generate phosphoric acid and its derivatives in high temperature decomposition polyphosphoric acid anhydride, formation of vitreous cover around the degradable polymer, hinder the generation of organic fuel to the flame surface diffusion, and isolated from the air, and have strong dehydration effect polyphosphoric acid anhydride, can promote the polymer surface carbonization.
In addition, phosphorus flame retardants at high temperatures can capture the oxygen atoms to form a POP_ composition of polyester, thereby reducing the oxygen burning process, while continuing to spread to promote the formation of the structure of graphite layer on the surface of polymer material, and accordingly improve the ignition temperature of polyester fiber, reduce its combustion performance. In addition, the presence of polyester flame retardants reduces the melting point of polyester fiber and melts the fiber after the fire, so that the flame can't contact the fiber, thus reducing the burning action.
Fire retardant K. 19 is a ring cage phosphonic acid ester, high phosphorus content, less dosage, gives excellent flame retardant fabric, high thermal stability, low volatility, good compatibility with a variety of polymer, a variety of toxicity test results have proved this product is safe. The flame retardant properties of phosphor flame retardant K 1 19 were discussed in this experiment and its application was optimized.
Triethyl phosphate (TEP)
Triethyl phosphate(Flame retardants TEP) is mainly used as the high boiling point solvents,catalysts, plasticizers, flame retardants, ethylating agent, and organic peroxide stabilizer. And Triethyl phosphate(TEP) is widely used in medicine, pesticides, vinyl ketone, resins, hydraulic oil and other production areas. In Japan, 70% of this product is used in catalyst.
According to JISL1091, 1999 (A method of test method A 1 method (450 microburner method), the carbonized area (A), afterburning time, smoldering time, carbon length and flame retardant grade are tested.
Take 50x50cm cloth, bath ratio 1:20, water content 90L, standard lotion 2g/L, hydrogen peroxide 3mL/L, sodium bicarbonate 1. 5 g/L, at 85 ℃ for 15 min, then the atmospheric overflow wash for 10 min, centrifugal dehydration, above for washing. For washing 50 times, then repeat the above operation, finally, in 100-105 ℃ drying.
Cloth specimens from 500 g, bath ratio l: 20, standard 2 g/l, then wash with household washing machine 40 ℃ 25 min, and the overflow water 10 min, dehydration, 308 continue to overflow wash lOmin. Repeat 50 times, and then dehydrate and dry.
Cloth specimens from 800 g, 60 l water, lotion stone alkaline (according to the anus SK3303 ∥ l - 2000 (detergent) l, at 60 ℃ water washing machine washing 15 min, and then in 40 ℃, 60 l water washing 5 min, 3 times in a row, the last dehydration drying, more than for a loop, repeat the above for 5 times.
Choose flame retardant agent 3%, 6%, 9%, 12% and 15%, the curing temperature 200 ℃, for 2 min. The flame retardant dosage has a considerable influence on the flame retardant effect. With the increase of dosage, the weight gain rate, the oxygen limit index and the number of flame increases correspondingly increased, but when the dosage reached 12%, the effect on the flame retardant effect was no longer obvious. This is also evident from the change in weight gain.
In order to fully understand the arrangement of the flame retardant fabric flame retardant performance, select three Japanese standard industrial washing method, household washing method and fire the washing method, to test the durability of the flame retardant fabric.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In recent years, fire caused by textiles has been increasing. According to statistics, the death rate of textile caused by fire accounts for 50%. Dacron fiber is the most used in synthetic fiber, widely used in clothing, carpets and decorative fabrics, but polyester fiber is easy to burn, and its combustion heat is 23. 8Wg, with a limited oxygen index of 20% to 22%, so once it burns, it's more than a cotton fiber. 8kJ/g, the oxygen control index is 17%, a 19%) more violent... . For this reason, it is very important to arrange the flame retarding of polyester textiles. Dacron flame retardants mainly include phosphorus and halogen.
Because of halogen flame retardants will be generated in the process of actual combustion halolide gases, can produce serious choke the breath of human body, so now countries are stepping up research and durable without halogen flame retardant agent, predictable of halogen flame retardants will be safer of phosphorous flame retardants.
When the polyester fiber burns, it produces free radicals. The activity of this free radical will continuously destroy the binding of the carbon, causing the chain decomposition reaction to produce combustible gas. Including phosphorus-containing flame retardants generate phosphoric acid and its derivatives in high temperature decomposition polyphosphoric acid anhydride, formation of vitreous cover around the degradable polymer, hinder the generation of organic fuel to the flame surface diffusion, and isolated from the air, and have strong dehydration effect polyphosphoric acid anhydride, can promote the polymer surface carbonization.
In addition, phosphorus flame retardants at high temperatures can capture the oxygen atoms to form a POP_ composition of polyester, thereby reducing the oxygen burning process, while continuing to spread to promote the formation of the structure of graphite layer on the surface of polymer material, and accordingly improve the ignition temperature of polyester fiber, reduce its combustion performance. In addition, the presence of polyester flame retardants reduces the melting point of polyester fiber and melts the fiber after the fire, so that the flame can't contact the fiber, thus reducing the burning action.
Fire retardant K. 19 is a ring cage phosphonic acid ester, high phosphorus content, less dosage, gives excellent flame retardant fabric, high thermal stability, low volatility, good compatibility with a variety of polymer, a variety of toxicity test results have proved this product is safe. The flame retardant properties of phosphor flame retardant K 1 19 were discussed in this experiment and its application was optimized.
Triethyl phosphate (TEP)
Triethyl phosphate(Flame retardants TEP) is mainly used as the high boiling point solvents,catalysts, plasticizers, flame retardants, ethylating agent, and organic peroxide stabilizer. And Triethyl phosphate(TEP) is widely used in medicine, pesticides, vinyl ketone, resins, hydraulic oil and other production areas. In Japan, 70% of this product is used in catalyst.
According to JISL1091, 1999 (A method of test method A 1 method (450 microburner method), the carbonized area (A), afterburning time, smoldering time, carbon length and flame retardant grade are tested.
Take 50x50cm cloth, bath ratio 1:20, water content 90L, standard lotion 2g/L, hydrogen peroxide 3mL/L, sodium bicarbonate 1. 5 g/L, at 85 ℃ for 15 min, then the atmospheric overflow wash for 10 min, centrifugal dehydration, above for washing. For washing 50 times, then repeat the above operation, finally, in 100-105 ℃ drying.
Cloth specimens from 500 g, bath ratio l: 20, standard 2 g/l, then wash with household washing machine 40 ℃ 25 min, and the overflow water 10 min, dehydration, 308 continue to overflow wash lOmin. Repeat 50 times, and then dehydrate and dry.
Cloth specimens from 800 g, 60 l water, lotion stone alkaline (according to the anus SK3303 ∥ l - 2000 (detergent) l, at 60 ℃ water washing machine washing 15 min, and then in 40 ℃, 60 l water washing 5 min, 3 times in a row, the last dehydration drying, more than for a loop, repeat the above for 5 times.
Choose flame retardant agent 3%, 6%, 9%, 12% and 15%, the curing temperature 200 ℃, for 2 min. The flame retardant dosage has a considerable influence on the flame retardant effect. With the increase of dosage, the weight gain rate, the oxygen limit index and the number of flame increases correspondingly increased, but when the dosage reached 12%, the effect on the flame retardant effect was no longer obvious. This is also evident from the change in weight gain.
In order to fully understand the arrangement of the flame retardant fabric flame retardant performance, select three Japanese standard industrial washing method, household washing method and fire the washing method, to test the durability of the flame retardant fabric.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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