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SiBON fiber precursor was successfully synthesized through sol–gel method when distilled water was used as solvent, boric acid (H 3 BO 3 ), melamine (C 3 H 6 N 6 ) and tetraethoxysilane (TEOS) were used as raw materials. The precursor was nitrogenized in N 2 at 1400–1800°C to prepare SiBON fiber. The chemical bonds structure, the micrograph and the elemental...
The gypsum water-proofing additives were composed of organic emulsion that were emulsified by polyvinyl alcohol and stearic acid and saline water-proofing additive made of alunite, carboxylic acid sodium, aluminium sulfate, etc. Using modern testing instrument, such as SEM, EPS, the influences of gypsum water-proofing additives on the crystal growth of gypsum products and its water-proof mechanism...
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