Preparation method of fiber-reinforced composite board and obtained composite board
A fiber-reinforced, composite board technology, applied in the field of board, can solve problems such as low mechanical strength, achieve high compressive capacity, improve flame retardancy and waterproof effect
Active Publication Date: 2016-04-20
唐地源
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Problems solved by technology
The longitudinal (that is, the thickness direction of the plate) mechanical strength of this sandwich panel is low
Method used
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[0023] In the present invention, a composite base material is firstly formed, and the composite base material includes a foam layer located in the middle layer and a reinforcement layer covering both sides of the middle layer. In a specific embodiment, a thermosetting resin and a foaming agent are mixed in a certain proportion to obtain a glue solution, the fiber mat is impregnated with the glue solution to obtain a prepreg, and then part of the moisture is removed by drying to obtain a fiber mat prepreg. The prepreg forms the middle layer after subsequent hot pressing and foaming. Thermosetting resins useful in the present invention include, but are not limited to, unsaturated polyester resins, epoxy resins, phenolic resins, polyurethanes, melamine formaldehyde resins, furan resins, butadiene resins, and silicone resins. Unsaturated polyester resin is a linear polymer compound with ester bond and unsaturated double bond formed by polycondensation of unsaturated dibasic acid d...
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The invention relates to a method for preparing a fiber-reinforced composite board. The method comprises the following steps: (1) forming a composite substrate which comprises a foamed layer and strengthened layers, wherein the foamed layer is arranged on a middle layer, and the strengthened layers cover two surfaces of the middle layer; (2) cutting the composite substrate, so as to obtain a plurality of bars with strengthened strips on the opposite surfaces; (3) splicing again by taking the opposite surfaces as adhesive surfaces, so as to obtain a composite board blank with the strengthened strips in a base body; and (4) encapsulating the blank body, respectively coating the upper surface and the lower surface with fibre cloth prepregs, and then putting into a press to carry out thermocuring, so as to obtain the composite board product. The fiber-reinforced composite board obtained by the method disclosed by the invention is light in weight, and has high anti-pressure capability, fire resistance and waterproofness, and can be widely applied to an artificial board room, an internal parting wall for a building, a transportation floor, a container bottom plate and the like.
Description
technical field [0001] The invention relates to the field of boards, in particular to man-made composite boards, and more specifically to fiber-reinforced foamed boards. Background technique [0002] Non-wood panels are required in many fields, such as walls and roofs of wood-based panels, building interior partition walls, indoor ceiling insulation materials, ventilation ducts, cold storage, floors of vehicles (cars, trains, airplanes, etc.), containers, etc. Such boards need to be light in weight, high in strength, and preferably have weather resistance and flame retardancy. [0003] CN103009736A discloses a foamed wood-plastic composite material for a container bottom plate, which is composed of a foamed wood-plastic composite material core board, an adhesive layer, and a glass fiber reinforced plastic skin layer. The board is formed by forming, curing and extruding the continuous fiber prepreg and the core board covered with an adhesive layer. CN102838844 discloses a p...
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IPC IPC(8): B32B37/06B32B37/02B32B38/00B32B27/04B32B27/12B32B27/42
Inventor 唐一林江成真李枝芳殷德刚赵卫李衍昭
Owner 唐地源