New UV-curable cyclotriphosphazenes as fire-retardant coating materials for wood
✍ Scribed by Y. W. Chen-Yang; J. R. Chuang; Y. C. Yang; C. Y. Li; Y. S. Chiu
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 186 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
A series of (2-hydroxyethylmethacrylate)( n-propoxy)cyclotriphosphazenes (HPCP) has been prepared by the reaction of N 3 P 3 Cl 6 with n-propanol and 2-hydroxyethylmethacrylate (HEMA) sequentially in the appropriate solvents. These phosphazene compounds are characterized by a combination of Fourier transform infrared, ultraviolet, and nuclear magnetic resonance spectroscopies. It was found that the compounds were soluble in most of the organic solvents, exhibited an absorption between 207-216 nm, and were curable by UV irradiation. After curing, the surfaces of the HPCP-coated woodblocks were transparent and had a fire-retardant property, which has been ascribed to the intumescent behavior during the burning process.