Preparation method for durable and inflaming retarding after-finishing chinlon fabric
A durable flame retardant and post-finishing technology, which is applied in fiber treatment, textiles and papermaking, fiber types, etc. It can solve the problems of complex reaction process, affecting fabric feel and color, etc., and achieves less consumption, less influence on fabric feel and appearance , The effect of improving thermal stability
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Embodiment 1
[0019] (1) Fabric pretreatment: Before finishing the nylon fabric, boil it with 5g / L sodium carbonate solution for 30 minutes, then rinse it with water, and dry it for later use.
[0020] (2) Hydroxymethylation modification: The pretreated fabric is placed in a three-necked flask with a condenser tube, a thermometer and a nitrogen tube, 36% formaldehyde solution is used as the reaction medium, and the pH value is adjusted to about 2 with hydrochloric acid. After reacting for 20 minutes, the sample was taken out and washed repeatedly with water and then dried.
[0021] (3) Flame retardant finishing: The fabric modified by methylolation is fully impregnated in 15% thiourea flame retardant solution, after two dipping and two rolling, pre-baking at 90°C for 3 minutes, and baking at 150°C 1min.
Embodiment 2
[0023] (1) Fabric pretreatment: Before finishing nylon fabric, boil it with 4g / L sodium carbonate solution for 30 minutes, then rinse it with water, and dry it for later use.
[0024] (2) Hydroxymethylation modification: The pretreated fabric is placed in a three-necked flask with a condenser tube, a thermometer and a nitrogen tube, 36% formaldehyde solution is used as the reaction medium, and the pH value is adjusted to about 2 with hydrochloric acid. After reacting for 20 minutes, the sample was taken out and washed repeatedly with water and then dried.
[0025] (3) Flame retardant finishing: The fabric modified by methylolation is fully impregnated in 15% thiourea flame retardant solution, after two dipping and two rolling, pre-baking at 90°C for 3 minutes, and baking at 150°C 1min.
Embodiment 3
[0027] (1) Fabric pretreatment: Before finishing the nylon fabric, boil it with 8g / L sodium carbonate solution for 30 minutes, then rinse it with water, and dry it for later use.
[0028] (2) Hydroxymethylation modification: The pretreated fabric is placed in a three-necked flask with a condenser tube, a thermometer and a nitrogen tube, 36% formaldehyde solution is used as the reaction medium, and the pH value is adjusted to about 2 with hydrochloric acid. After reacting for 20 minutes, the sample was taken out and washed repeatedly with water and then dried.
[0029] (3) Flame retardant finishing: The fabric modified by methylolation is fully impregnated in 15% thiourea flame retardant solution, after two dipping and two rolling, pre-baking at 90°C for 3 minutes, and baking at 150°C 1min.
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