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Nitrogen and phosophorous modified compounds for sol-gel-based flame retardants

  • In the IGF project No. 19617 N, nitrogen and phosphorous substituted alkoxysilanes were prepared and their ability to inhibit fire growth and spread for fabrics was explored. To this end, a series of flame retardants were synthesized using different strategies including click chemistry and nucleophilic substitution of commercial organophosphorus compounds with amino-based trialkoxysilanes and/or cyanuric chloride. The new halogen-free and aldehyde-free flame retardants were applied to different fabrics such as cotton (CO), polyethylene terephthalate (PET), polyamide (PA) and their blends using the well-known pad-dry-cure technique and sol-gel method. The flame-retarding efficiencies were evaluated by EN ISO 15025 test methods (protective clothing-protection against heat and flame method of test for limited flame spread). Good flame retardancy of the hybrid organic-inorganic materials was achieved with the addition of as small amount as 3-5 wt.% for cotton fabrics. Moreover, the water solubility and the washing resistance could be controlled through the functional groups attached to the phosphor atom or through the optimization of the curing temperature. Overall, the research project demonstrated that N-P-silanes are very good permanent flame retardants for textiles.

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Author of HS ReutlingenTextor, Torsten
Erschienen in:Technical textiles : innovation, technology, application
Publisher:Deutscher Fachverlag
Place of publication:Frankfurt
Document Type:Journal article
Publication year:2021
Page Number:3
First Page:29
Last Page:31
PPN:Im Katalog der Hochschule Reutlingen ansehen
DDC classes:670 Industrielle und handwerkliche Fertigung
Open access?:Nein