FIELD: coating of heat-insulating vermiculite articles. SUBSTANCE: composition has, wt.-%: zinc oxide (ZnO) 40-50; boron oxide (B2O3) 30-40; lithium oxide (Li2O) 7-25, and sulfur (S) 3-5. Coating properties: CLTE value (coefficient of linear thermal expansion) is (84-86) x (84-86)·10-7 1/degree, roasting point is 600-700 C, impact strength is 0.8-0.9 J, spreadability is 50-70 mm, chemical stability to 4% acetic acid solution at exposition for 1 h (loss weight) is 0.11-0.20%, coating is uniform without cracks. EFFECT: enhanced quality of composition. 1 tbl
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Authors
Dates
1994-11-15—Published
1991-03-26—Filed