Replacing boric acid with calcium borate in the melting of a borosilicate charge
β Scribed by Yu. A. Zorin; V. V. Makarova; V. Z. Bychkov; A. S. Kutukov; E. I. Smirnov; S. A. Fedulov; L. I. Shvorneva
- Publisher
- Springer US
- Year
- 1981
- Tongue
- English
- Weight
- 315 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0361-7610
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The reaction of boric acid with wood fibers in a polymer melt was examined using '"Cnuclear magnetic resonance (NMR), "B-NMR, differential scanning calorimetry, dynamic mechanical analysis, and component extraction and by the determination of material properties. Samples were blended a t 350 and 380
Iicccivcd Fcbrunry x 0th) 1 gGg) EXPERIMENTAL Reagents z,z-Diethylpropanediol-I,3 (DEPD; J. T. Baker Chemical Co, Phillipsburg, U.S.A.) and 2-ethylhexanediol-1,s (EHD; Kebo AB, Stockholm, Sweden) were purified as in the previous workis. Chloroform (p.a.) was washed twice with redistilled water and t