Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (11): 110-116.doi: 10.13475/j.fzxb.20201105607

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation and properties of flexible flame retardant polyamide coated fabric via wet coating

CHEN Zhijie1(), YU Yihao2, FU Ye2, LEI Pengfei2, JIANG Jikang3, QI Dongming3   

  1. 1. Key Laboratory of Surface Modification of Polymer Materials and Mechanical and Electrical Products, Wenzhou Polytechnic, Wenzhou, Zhejiang 325035, China
    2. Zhejiang King Label Technology Co., Ltd., Huzhou, Zhejiang 313100, China
    3. Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2020-11-27 Revised:2021-05-17 Online:2021-11-15 Published:2021-11-29

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Abstract:

In order to address the poor performance of polyamide coated fabric's hand feel and flame retardant properties, caused by insoluble particulate flame retardant, the research introduced 9,10-dihydrogen-9-oxygen hybrid-10-phosphorus hexafil-10-oxide (DOPO) into the polyamide/methanol-calcium chloride solution. A porous, light and thin polyamide coating with DOPO uniformly dispersed, and a smooth and flat surface coating on the fabric were created on the fabric via wet coating which including coating, water exchange into film and drying process. The effects of DOPO and particulate flame retardants on the fluid properties of the polyamide/methanol-calcium chloride solution system were investigated and compared. The results show that DOPO changes the rheological properties of the solution, but does not significantly increase the shear viscosity of the system, which is beneficial to coating processing. According to the test of flame retardant properties and stiffness, it was found that DOPO can effectively improve the flame retardant properties of the coated fabric and retain the flexibility of the fabric compared to the flame retardant particles.

Key words: 9,10-dihydrogen-9-oxygen hybrid-10-phosphorus hexafil-10-oxide, polyamide coating, flame retardant textiles, wet coating, flexible fabric

CLC Number: 

  • TQ325

Fig.1

Effect of DOPO and MCA content on shear viscosity and particle size of polyamide/methanol-calcium chloride slurry coating"

Fig.2

Shear rate and shear viscosity of original and DOPO、MCA polyamide/methanol-calcium chloride slurry coating"

Fig.3

SEM images of polyamide coating containing DOPO and MCA (×2 000)"

Fig.4

Effect of DOPO content on vertical burning length of coated fabric"

Fig.5

Effect of DOPO and MCA content on limit oxygen index of coated fabric"

Tab.1

Thermogravimetric analysis data of uncoated polyamide fabric and DOPO,MCA coating fabric"

样品 T-5%/℃ Tmax/℃ 残炭量/%
聚酰胺基布 373 454 1.3
MCA (8.5%)涂层织物 361 411 2.2
DOPO(8.5%)涂层织物 337 406 4.5

Fig.6

Effect of DOPO and MCA content on stiffness of coated fabric"

Fig.7

Film formation mechanism of wet polyamide coating in presence of DOPO or MCA"

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