News Details
Cotton fabric low formaldehyde crosslinked flame retardant
2017-10-18 17:07:55
Cotton fabric low formaldehyde crosslinked flame retardant
At present, cotton is mainly used as flame retardant of organic phosphorus nitrogen. Among them, the representative products include Pyrovatex CP, domestic cotton flame retardant CFR 1 201, FR 1 102 etc. Its chemical structure is N 1 hydroxymethyl 1 3 1 (dimethoxyphosphine carboxyl) propanamide.
Because the molecule contains N hydroxymethyl, in the baking process, it crosslinks with the hydroxyl group of cotton fiber molecules, forming covalent bond, and therefore has the resistance to flame retardation. But this kind of flame retardants for flame retardant containing formaldehyde, and the reaction of the cotton fiber rate is relatively low, have to use contains a lot of free formaldehyde in the application of crosslinking agent, such as methyl etherification six methylol melamine to assist crosslinking, such as after the finishing of fabric in the process of storage and use can release a large amount of harmful to human body free formaldehyde, difficult to meet the requirements of GB l840l a 2003.
In order to reduce the formaldehyde content of flame retardant finishing fabric, people try to adopt the new crosslinking group to develop new cotton fabric low formaldehyde crosslinking flame retardant. But no groundbreaking research has been achieved so far. In this paper, the flame retardant of low formaldehyde in cotton fabric is studied according to the mechanism of phosphorus nitrogen co-effect.
Results show that the cotton fabric with low formaldehyde cross-linking flame-retardant agent has excellent flame retardant effect, and the surface of the treated fabrics free formaldehyde content is lower than 25 mg/kg, and can completely meet the GB 18401-2003 for a limited amount of free formaldehyde content requirements.
Test materials: 27. 8/27. Pure cotton sheeting. CFR. 201 flame retardant, methyl ether methylated melamine, crosslinked flame retardant (homemade), catalyst phosphoric acid and urea, etc.
Instruments and equipment: Nicolet 550. II Fourier infrared spectrometer, small rolling car, oven, tear strength tester, IAF. 10 vertical normal fabric combustion performance meter, UNICO ultraviolet visible spectrometer.
The determination of nitrogen content of crosslinking flame retardant is based on kjeldahl method. The determination of phosphorus content was based on quinolone. The Nicolet 550 II Fourier infrared spectrometer was used to determine the structure.
Processing: process pad (more than two dip two rolling, rolling rate 100%) a drying (100 ℃ x 5 min) a baking (160 oC X4 min) a bath
Phosphate tert-butyl benzene diphenyl phosphate (BPDP-71B) export cargo safety data
CAS No.:56803-37-3
HS 29199000
Tert Benzyl diphenyl phosphate (BPDP-71B) raw materials
The raw materials are p-tert-butylphenol and phosphorus oxychloride.
Tert Benzyl diphenyl phosphate (BPDP-71B) use
Tert-butyl phosphate diphenyl phosphate, tert-butylated triphenyl phosphate is halogen-free organophosphorus flame retardant, using a new, excellent performance of phosphorus flame retardant, with excellent thermal stability and hydrolysis Sex. Its high thermal stability makes it as an engineering plastic flame retardant at the same time, can improve the plastic melting performance. Tert-butylated triphenyl phosphate for the liquid, in the resin can make its durability and hydrolysis stability is better, and easy to produce the table and stress cracking. It is widely used in flame retardant PV (, cellulose resin, into the rubber, phenolic resin, epoxy resin, polyene unit fiber.
The whiteness of the fabric was determined by GB/T 8428-1987 "method of determination of textile color and color difference".
The determination of free formaldehyde content of flame retardant finishing fabric is adopted in GB/T 3917. 1 l997 "breaking strength of textiles" and GB/T 6529-1986 (the humidification and testing of textiles are used to measure the tearing strength of fabric after flame retardant finishing.
Flame retardant finishing of fabric flame retardant performance measurement method of the GB/T 5455-5455 (vertical flame retardant performance measurement "and GB/T 6529-1986 (textile wet and test with standard atmosphere, determination of flame retardant flame retardant properties of the treated fabrics.
The determination of free formaldehyde in flame retardant finishing fabrics was measured by spectrophotometer with the determination of free formaldehyde content of the fabric after the flame retardant finishing.
The physical and chemical performance indexes of crosslinked flame retardants can be seen, and the crosslinked flame retardants contain a solid amount, nitrogen content and high phosphorus content, which can be mixed with water at any rate, and the storage stability is good.
Crosslinking in secondary flame retardant molecular N - H the characteristic absorption peak of 415 cm ~ 3, the characteristic absorption peaks of methylene 963 cm ~ 2, heterocyclic C = N the characteristic absorption peak of 547 cm ~ 1, P a 0 C 1 036 cm and carbonyl stretching vibration characteristic absorption peak of characteristic absorption peak 673 cm ~ 1. This proves that crosslinked flame retardants do contain phosphorus and nitrogen flame retardant elements.
The dosage of crosslinked flame retardant is the key factor to determine the flame retardant effect. With the increase of the dosage, obviously increase the fabric weight and washing resistance is good, and inhibition of smoldering and continue burning has obvious effect, but with the increase of the dosage of crosslinking flame retardant, feel is gradually hardens. The research shows that to make cellulose fiber good durability, the content of the fabric is at least 3%, at least after treatment. The dosage of flame retardant is suitable for 500 g/L from the test results and the combination of flame retardant effect, hand feeling and processing cost.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
At present, cotton is mainly used as flame retardant of organic phosphorus nitrogen. Among them, the representative products include Pyrovatex CP, domestic cotton flame retardant CFR 1 201, FR 1 102 etc. Its chemical structure is N 1 hydroxymethyl 1 3 1 (dimethoxyphosphine carboxyl) propanamide.
Because the molecule contains N hydroxymethyl, in the baking process, it crosslinks with the hydroxyl group of cotton fiber molecules, forming covalent bond, and therefore has the resistance to flame retardation. But this kind of flame retardants for flame retardant containing formaldehyde, and the reaction of the cotton fiber rate is relatively low, have to use contains a lot of free formaldehyde in the application of crosslinking agent, such as methyl etherification six methylol melamine to assist crosslinking, such as after the finishing of fabric in the process of storage and use can release a large amount of harmful to human body free formaldehyde, difficult to meet the requirements of GB l840l a 2003.
In order to reduce the formaldehyde content of flame retardant finishing fabric, people try to adopt the new crosslinking group to develop new cotton fabric low formaldehyde crosslinking flame retardant. But no groundbreaking research has been achieved so far. In this paper, the flame retardant of low formaldehyde in cotton fabric is studied according to the mechanism of phosphorus nitrogen co-effect.
Results show that the cotton fabric with low formaldehyde cross-linking flame-retardant agent has excellent flame retardant effect, and the surface of the treated fabrics free formaldehyde content is lower than 25 mg/kg, and can completely meet the GB 18401-2003 for a limited amount of free formaldehyde content requirements.
Test materials: 27. 8/27. Pure cotton sheeting. CFR. 201 flame retardant, methyl ether methylated melamine, crosslinked flame retardant (homemade), catalyst phosphoric acid and urea, etc.
Instruments and equipment: Nicolet 550. II Fourier infrared spectrometer, small rolling car, oven, tear strength tester, IAF. 10 vertical normal fabric combustion performance meter, UNICO ultraviolet visible spectrometer.
The determination of nitrogen content of crosslinking flame retardant is based on kjeldahl method. The determination of phosphorus content was based on quinolone. The Nicolet 550 II Fourier infrared spectrometer was used to determine the structure.
Processing: process pad (more than two dip two rolling, rolling rate 100%) a drying (100 ℃ x 5 min) a baking (160 oC X4 min) a bath
Phosphate tert-butyl benzene diphenyl phosphate (BPDP-71B) export cargo safety data
CAS No.:56803-37-3
HS 29199000
Tert Benzyl diphenyl phosphate (BPDP-71B) raw materials
The raw materials are p-tert-butylphenol and phosphorus oxychloride.
Tert Benzyl diphenyl phosphate (BPDP-71B) use
Tert-butyl phosphate diphenyl phosphate, tert-butylated triphenyl phosphate is halogen-free organophosphorus flame retardant, using a new, excellent performance of phosphorus flame retardant, with excellent thermal stability and hydrolysis Sex. Its high thermal stability makes it as an engineering plastic flame retardant at the same time, can improve the plastic melting performance. Tert-butylated triphenyl phosphate for the liquid, in the resin can make its durability and hydrolysis stability is better, and easy to produce the table and stress cracking. It is widely used in flame retardant PV (, cellulose resin, into the rubber, phenolic resin, epoxy resin, polyene unit fiber.
The whiteness of the fabric was determined by GB/T 8428-1987 "method of determination of textile color and color difference".
The determination of free formaldehyde content of flame retardant finishing fabric is adopted in GB/T 3917. 1 l997 "breaking strength of textiles" and GB/T 6529-1986 (the humidification and testing of textiles are used to measure the tearing strength of fabric after flame retardant finishing.
Flame retardant finishing of fabric flame retardant performance measurement method of the GB/T 5455-5455 (vertical flame retardant performance measurement "and GB/T 6529-1986 (textile wet and test with standard atmosphere, determination of flame retardant flame retardant properties of the treated fabrics.
The determination of free formaldehyde in flame retardant finishing fabrics was measured by spectrophotometer with the determination of free formaldehyde content of the fabric after the flame retardant finishing.
The physical and chemical performance indexes of crosslinked flame retardants can be seen, and the crosslinked flame retardants contain a solid amount, nitrogen content and high phosphorus content, which can be mixed with water at any rate, and the storage stability is good.
Crosslinking in secondary flame retardant molecular N - H the characteristic absorption peak of 415 cm ~ 3, the characteristic absorption peaks of methylene 963 cm ~ 2, heterocyclic C = N the characteristic absorption peak of 547 cm ~ 1, P a 0 C 1 036 cm and carbonyl stretching vibration characteristic absorption peak of characteristic absorption peak 673 cm ~ 1. This proves that crosslinked flame retardants do contain phosphorus and nitrogen flame retardant elements.
The dosage of crosslinked flame retardant is the key factor to determine the flame retardant effect. With the increase of the dosage, obviously increase the fabric weight and washing resistance is good, and inhibition of smoldering and continue burning has obvious effect, but with the increase of the dosage of crosslinking flame retardant, feel is gradually hardens. The research shows that to make cellulose fiber good durability, the content of the fabric is at least 3%, at least after treatment. The dosage of flame retardant is suitable for 500 g/L from the test results and the combination of flame retardant effect, hand feeling and processing cost.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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