COMPOSITION FOR PREPARING HEAT-INSULATING MATERIAL Russian patent published in 2006 - IPC C04B26/02 C04B18/04 C04B111/20 

FIELD: building materials.

SUBSTANCE: composition for preparing heat-insulating materials comprises unfibered waste in textile and weaving manufacture as a fibrous component and/or waste in manufacture of nonweaven materials with unoriented fiber structure characterizing by average length 18-60 mm and average diameter 6-12 mm. As a binding agent the composition comprises 3-9% solutions of polystyrene foam and/or polystyrene waste in organic solvents, and ammonium bromide as an antipyrene in the following content of components, wt.-%: indicated binding agent, 14.5-28.3; indicated fibrous component, 66.0-82.1; ammonium bromide, 3.4-5.7. Heat-insulating material prepared on the proposed composition base shows the following properties: average density is 150-200 kg/m³, heat conductivity is 0.022-0.025 Wt/(m x K), bending strength limit is 0.2-0.4 MPa, rupture strength limit is 0.24-0.36 MPa, strength at 10% of deformation is 0.020-0.054 MPa. The composition shows biological stability and difficulty combustibility. Invention provides decreasing the coefficient of heat conductivity, cost of material and retaining its physical-mechanical indices. Invention can be used in preparing heat-insulating materials used in building industrial and municipal buildings and in rural building also.

EFFECT: improved and valuable properties of composition.

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