The invention relates to an environment friendly light-weight composite
keel plate comprising an intermediate substrate and surface composite
layers adhered to two sides of the intermediate substrate, wherein the surface composite layer consists of a plurality of surface fabric
layers and
glass fiber cloth
layers compounded alternately; the
glass fiber cloth layer as the innermost layer of the surface composite layer is adhered to the intermediate substrate; the outermost layer of the surface composite layer is the surface fabric layer; the surface fabric layer is prepared from the following materials by weight part: 5 to 12 parts of FHL solution, 6 to 10 parts of
magnesium oxide, 0.5 to 5 parts of filler and 0.5 to 3 parts of HHD agent; and the intermediate substrate comprises the following components by weight part: 26 to 35 parts of composite solution, 34 to 42 parts of
magnesium oxide, 12 to 18 parts of filler, 2 to 5 parts of HHD agent and 1 to 5 parts of composite modifier. The invention has the following beneficial effects: the composite light-weight
keel plate has good performance in
shock prevention and has the characteristics of heat insulation,
water resistance,
flame resistance, bending prevention, high strength, good tenacity, deformation resistance, low cost, environment friendly performance and the like; and the product is superior in physical and mechanical properties.