A kind of pultruded wooden core material composite sandwich panel and its production process

A composite material, pultrusion molding technology, applied in the direction of layered products, wood layered products, chemical instruments and methods, etc., can solve the problems of difficult positioning of rigid components, difficult to guarantee the connection interface of core materials, and limiting the size of sandwich panels. , to achieve the effect of strong designability, not easy interface peeling, and fast bonding speed

Active Publication Date: 2015-11-11
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical engineering applications, the extruded products are often cut at discontinuities, thereby limiting the size of the sandwich panels; The positioning of the rigid member when it enters the mold becomes difficult during splicing; at the same time, it is difficult to ensure the connection between the connecting piece and the core material on both sides and the interface with the surface layer during co-curing

Method used

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  • A kind of pultruded wooden core material composite sandwich panel and its production process
  • A kind of pultruded wooden core material composite sandwich panel and its production process
  • A kind of pultruded wooden core material composite sandwich panel and its production process

Examples

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Embodiment 1

[0034] A pultruded wood core composite sandwich panel. The pultrusion production process is that the glass fiber and paulownia wood core material enter the dipping tank filled with vinyl resin, enter the heating and curing mold through the mold positioning, and pull it through the traction device. Extruded, and finally cut to the required size by cutting equipment. For the core material, the mortise and tenon structure needs to be processed at the joint of the core material. The mortise and tenon structure adopts the oblique alveolar type, which is composed of convex joints and concave joints, and white latex is used for solid wood splicing. At the same time, the upper surface and sides of the core material need to be roughened to strengthen the interface connection with the surface layer. Here, some shallow grooves are used.

Embodiment 2

[0036] A pultruded wooden core composite sandwich panel. The pultruded production process is that the fiber and Balsa wood enter the impregnation tank filled with epoxy resin, enter the heating and curing mold through the mold positioning, and pultrude through the traction equipment. , and finally cut to the required size by cutting equipment. For the core material, the mortise and tenon structure needs to be processed at the joint of the core material. At the same time, the surface needs to be roughened to strengthen the interface connection with the surface layer. Here, some shallow grooves are used. The mortise and tenon structure adopts a combined form, consisting of a convex joint and a concave joint. A row of cylindrical holes is opened at the joint, and the auxiliary joint is a short column of composite material.

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Abstract

The invention discloses a pultruded-molded wood-core composite sandwich board, which is convenient to promote, simple and convenient to operate, practical, high in material utilization rate and produced by a novel process. The pultruded-molded wood-core composite sandwich board comprises a composite shell, a wood core and composite rib plates, wherein the wood core and the composite rib plates are arranged in the composite shell; the wood core is a sectional and splicing type wood core; the spliced position of the wood core adopts a mortise-and-tenon structure form; the mortise-and-tenon structure form adopts mutually-matched concave-convex structures at the ends of wood at the two sides of the splicing position and comprises convex joints and concave joints. The invention also discloses a production process of the pultruded-molded wood-core composite sandwich board.

Description

technical field [0001] The invention relates to a composite material sandwich panel and its production process, in particular to a composite material sandwich panel manufactured by a pultrusion process with a composite material shell, a wooden core material and a composite material rib, specifically a composite material sandwich panel using The continuation of the wooden core material realizes the continuous production of composite sandwich panels. Background technique [0002] As a new structural form, composite sandwich structure has been widely used in construction, transportation, ships, aerospace, etc. due to its advantages of light weight, high specific strength, easy processing and modification, corrosion resistance, and strong designability. field. Wood is widely used as core material in sandwich structures because of its light weight and toughness, low thermal conductivity, and convenient material acquisition. [0003] In the production process of sandwich panels,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/06B32B21/10
Inventor 陆伟东刘伟庆齐玉军方海施冬
Owner NANJING TECH UNIV
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