News Details
Pure cotton fabric low formaldehyde flame retardant
2017-10-7 10:40:28
Pure cotton fabric low formaldehyde flame retardant
Using polybasic acid as crosslinking agent to low formaldehyde durable flame retardant finishing of cotton fabrics, the cotton fabric flame retardant flame retardant low formaldehyde finishing process conditions, discusses the various factors influencing the flame retardant effect.
And N - methylol amides crosslinking agent technology are compared, the cotton fabric flame retardant burning low formaldehyde finishing process not only significantly reduce the free formaldehyde content in the fabrics, also can improve the flame retardant effect, and pure cotton fabric flame retardant low formaldehyde, the dosage of the cross-linking agent greatly reduced, flame retardant cost reduction.
At present, the durable flame retardant of cotton fabric is mainly organophosphate flame retardant. A reactive flame retardant agent for cellulose fiber fabric, its molecules containing N - hydroxy methyl, in the process of curing by crosslinking agent and the fiber macromolecule hydroxyl crosslinking, covalent bond formation, can also be with their own cellulose macromolecule hydroxyl crosslinking, therefore, high durability, and feel is good, strong reduction is less, better whiteness, therefore has been widely used.
But Provatex CP contains free formaldehyde, which will release free formaldehyde during storage and use. We used polycarboxylic acid as crosslinking agent, and the flame retardant finishing of cotton fabric with Provatex CP class flame retardant was used to obtain flame retardant fabric released by low formaldehyde. Using polycarboxylic acid instead of conventional crosslinking agent with formaldehyde, on the one hand, it reduces the formaldehyde content of the whole flame retardant system and the release of free formaldehyde in flame retardant fabric; On the other hand, the dosage of flame retardant and crosslinking agent is reduced, and the application performance of Provatex CP class flame retardant is improved.
Experimental materials: 21/2l 60 x 5O pure cotton flat cloth (Qingdao decorative cloth general plant), cfr-201 flame retardant (Shanghai agricultural pharmaceutical factory), HMM (industrial product), polyacid (homemade), catalyst (CP), etc. Instruments and equipment: small rolling car, oven, tear strength tester, vertical fabric combustion performance tester, spectrophotometer, etc. Finishing technological process: the pad (more than two dip two rolling, rolling rate 100%) - drying (100 ℃, 3 min) - baking (180 ℃, 2 min) and water (cold water)
The higher the flame retardant dose, the better the flame retardant effect, the more tear the strength down. When the dosage of flame retardant is 190g/L, the flame retardant effect and strength reduction can achieve satisfactory effect. In line with the principle of meeting fire retardant requirement and reducing cost, the dosage of flame retardant is 190g/L.
Process prescription: flame retardant 190g/L, crosslinking agent 45 g/L, catalyst 25 g/L, pH value 3. Process: the pad (more than two dip two rolling, rolling rate 100%), dry (l00 ℃, 3 min) - > curing (170-190 ℃, 2 min) and water (cold water)
Triisobutyl Phosphate (TIBP)
The product output: 200 tons / month
Shipping Port: China Shang Hai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
When curing temperature 170 ℃, flame retardant effect is poor. In l90 ℃, tear strength decreased; At 180 ℃, the damaged length and tear strength. So the best baking temperature is 180 ℃.
The best finishing process for: flame retardant, 190 g/L, crosslinking agent of 45 g/L, catalyst 25 g/L, curing temperature 180 ℃, the curing time of 2 min.
Repeat the best process conditions, and test the free formaldehyde content on the surface of the fabric, the resulting fabric damaged length is 6.2 cm, tear strength, 733 gf, free formaldehyde content of 213.1 mg/Kg (glutaric ketone method, HMM crosslinking agent sample of 1200 parts per million (PPM). The flame retardant fabric is washed 30 times according to the normal washing method, the damage length is 7. LCM.
Fabric after CFR - 20 l and HMM flame retardant finishing, the cause of the release of formaldehyde basically has the following kinds: (1) the unreacted contain free formaldehyde in flame retardant finishing agent (2) the unreacted crosslinking agent HMM contain free formaldehyde (3) crosslinking agent self condensation polymer hydrolysis (4) of the cross-linking agent N - hydroxy methyl ether bond formed by the cellulose fiber with hydrolysis (5) flame retardants and single molecule grafted cellulose ether bond formed by hydrolysis (6) crosslinking agent and flame retardant form of ether bond hydrolysis, etc.
One (1) and (2) the most easy to release, this is mainly with the free formaldehyde content in flame retardant agent and crosslinking agent, followed by (3) - (6), its hydrolysis trend mainly depends on the size of the electron cloud density adjacent N atoms.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Using polybasic acid as crosslinking agent to low formaldehyde durable flame retardant finishing of cotton fabrics, the cotton fabric flame retardant flame retardant low formaldehyde finishing process conditions, discusses the various factors influencing the flame retardant effect.
And N - methylol amides crosslinking agent technology are compared, the cotton fabric flame retardant burning low formaldehyde finishing process not only significantly reduce the free formaldehyde content in the fabrics, also can improve the flame retardant effect, and pure cotton fabric flame retardant low formaldehyde, the dosage of the cross-linking agent greatly reduced, flame retardant cost reduction.
At present, the durable flame retardant of cotton fabric is mainly organophosphate flame retardant. A reactive flame retardant agent for cellulose fiber fabric, its molecules containing N - hydroxy methyl, in the process of curing by crosslinking agent and the fiber macromolecule hydroxyl crosslinking, covalent bond formation, can also be with their own cellulose macromolecule hydroxyl crosslinking, therefore, high durability, and feel is good, strong reduction is less, better whiteness, therefore has been widely used.
But Provatex CP contains free formaldehyde, which will release free formaldehyde during storage and use. We used polycarboxylic acid as crosslinking agent, and the flame retardant finishing of cotton fabric with Provatex CP class flame retardant was used to obtain flame retardant fabric released by low formaldehyde. Using polycarboxylic acid instead of conventional crosslinking agent with formaldehyde, on the one hand, it reduces the formaldehyde content of the whole flame retardant system and the release of free formaldehyde in flame retardant fabric; On the other hand, the dosage of flame retardant and crosslinking agent is reduced, and the application performance of Provatex CP class flame retardant is improved.
Experimental materials: 21/2l 60 x 5O pure cotton flat cloth (Qingdao decorative cloth general plant), cfr-201 flame retardant (Shanghai agricultural pharmaceutical factory), HMM (industrial product), polyacid (homemade), catalyst (CP), etc. Instruments and equipment: small rolling car, oven, tear strength tester, vertical fabric combustion performance tester, spectrophotometer, etc. Finishing technological process: the pad (more than two dip two rolling, rolling rate 100%) - drying (100 ℃, 3 min) - baking (180 ℃, 2 min) and water (cold water)
The higher the flame retardant dose, the better the flame retardant effect, the more tear the strength down. When the dosage of flame retardant is 190g/L, the flame retardant effect and strength reduction can achieve satisfactory effect. In line with the principle of meeting fire retardant requirement and reducing cost, the dosage of flame retardant is 190g/L.
Process prescription: flame retardant 190g/L, crosslinking agent 45 g/L, catalyst 25 g/L, pH value 3. Process: the pad (more than two dip two rolling, rolling rate 100%), dry (l00 ℃, 3 min) - > curing (170-190 ℃, 2 min) and water (cold water)
Triisobutyl Phosphate (TIBP)
The product output: 200 tons / month
Shipping Port: China Shang Hai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
When curing temperature 170 ℃, flame retardant effect is poor. In l90 ℃, tear strength decreased; At 180 ℃, the damaged length and tear strength. So the best baking temperature is 180 ℃.
The best finishing process for: flame retardant, 190 g/L, crosslinking agent of 45 g/L, catalyst 25 g/L, curing temperature 180 ℃, the curing time of 2 min.
Repeat the best process conditions, and test the free formaldehyde content on the surface of the fabric, the resulting fabric damaged length is 6.2 cm, tear strength, 733 gf, free formaldehyde content of 213.1 mg/Kg (glutaric ketone method, HMM crosslinking agent sample of 1200 parts per million (PPM). The flame retardant fabric is washed 30 times according to the normal washing method, the damage length is 7. LCM.
Fabric after CFR - 20 l and HMM flame retardant finishing, the cause of the release of formaldehyde basically has the following kinds: (1) the unreacted contain free formaldehyde in flame retardant finishing agent (2) the unreacted crosslinking agent HMM contain free formaldehyde (3) crosslinking agent self condensation polymer hydrolysis (4) of the cross-linking agent N - hydroxy methyl ether bond formed by the cellulose fiber with hydrolysis (5) flame retardants and single molecule grafted cellulose ether bond formed by hydrolysis (6) crosslinking agent and flame retardant form of ether bond hydrolysis, etc.
One (1) and (2) the most easy to release, this is mainly with the free formaldehyde content in flame retardant agent and crosslinking agent, followed by (3) - (6), its hydrolysis trend mainly depends on the size of the electron cloud density adjacent N atoms.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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