| 摘要 |
FIELD: construction industry. ^ SUBSTANCE: invention refers to composite material. The latter is a filler layer containing the following, wt %: urea-formaldehyde resin 8.0-12.0; sodium carboxymethyl cellulose 0.1-0.2; water 4.0-6.0; ammonium chloride 0.2-0.4; crushed used automobile tyres 81.7-87.4, which is lined with board. ^ EFFECT: invention can be used in construction. ^ 1 cl, 1 tbl |
