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Cellular sandwich structure and production method thereof

A technology of honeycomb sandwich structure and honeycomb core, which is applied in the direction of chemical instruments and methods, lamination, layered products, etc., which can solve the problem of difficulty in ensuring the necessary bonding between the skin and the honeycomb core, unsatisfactory mechanical properties of the honeycomb sandwich structure, and the impact of Problems such as product performance and service life, to achieve the effect of not easy degumming and delamination, high bonding stability, and improving service life

Active Publication Date: 2016-10-12
GUANGDONG XINXIU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The mechanical properties of the existing honeycomb sandwich structure are not ideal. For example, the thermosetting skin honeycomb sandwich structure has problems such as poor toughness and poor impact resistance, which affect its application range.
In addition, because the bonding area between the skin and the honeycomb core is very small, it is difficult to ensure the necessary bonding between the skin and the honeycomb core, and degumming and delamination are very easy to occur, which directly affects the performance and service life of the product

Method used

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  • Cellular sandwich structure and production method thereof

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preparation example Construction

[0027] The preparation method of honeycomb sandwich structure of the present invention, it comprises the steps:

[0028] S1. A honeycomb core is selected. The honeycomb core has a plurality of holes, and the pores of the honeycomb core are filled with foam to form a foam honeycomb core. In this embodiment, the thickness of the honeycomb core is 3mm-30mm, and the thickness is determined according to the required thickness of the overall structural member. The material of the honeycomb core is one of PE honeycomb core, PP honeycomb core, PVC honeycomb core, PC honeycomb core, PET honeycomb core, paper honeycomb core, Nomex honeycomb core and aluminum honeycomb core. The foam is one or a combination of PVC foam, PS foam, PU foam, PUR foam, PEI foam, PI foam, PMI foam, PPSU foam and SAN foam, and the density of the foam is 40-200kg / m 3 . When several materials are selected for the foam, different types of foam can be filled in one hole, or one kind of foam can be filled in the s...

Embodiment

[0036] In this embodiment, the preparation method of the honeycomb sandwich structure comprises the following steps:

[0037] S1. A honeycomb core is selected. The honeycomb core has a plurality of holes, and the pores of the honeycomb core are filled with foam to form a foam honeycomb core. In this embodiment, the thickness of the honeycomb core is 6mm. The material of the honeycomb core is a PC honeycomb core, which is filled with PVC foam to obtain a foam honeycomb core.

[0038] S2, select the first non-woven fabric layer, the second non-woven fabric layer, the first hot-melt adhesive film layer, and the second hot-melt adhesive film layer, and provide the first mold, the first non-woven fabric layer, the second non-woven fabric layer The woven fabric layer and the first hot-melt adhesive film layer, the second hot-melt adhesive film layer and the foam honeycomb core are cut to the same size to ensure that the circumference of the manufactured structural parts is neat, an...

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Abstract

The invention discloses a cellular sandwich structure and a production method thereof. The method comprises the following steps: S1, selecting a cellular core and filling with foam to form a foam cellular core; S2, selecting two nonwoven layers and two hot-melt film layers, placing one nonwoven layer, one hot-melt film layers, the foam cellular core, the other hot-melt film layer and the other nonwoven layer sequentially in a first mold, and adjusting temperature and pressure for hot-pressing combination to obtain a middle core; S3, placing the middle core between two fiber-reinforced thermoplastic panels, placing in a second mold, adjusting temperature and pressure for hot-pressing combination, cooling quickly after hot pressing to obtain a cellular sandwich intermediate plate; S4, performing injection molding and binding on the periphery of the cellular sandwich intermediate plate to obtain the cellular sandwich structure. The cellular sandwich structure produced by the production method described herein has high mechanical properties, is resistant to peeling and layering and is long in service life.

Description

technical field [0001] The invention relates to the technical field of honeycomb sandwich panels, in particular to a honeycomb sandwich structure and a preparation method thereof. Background technique [0002] The composite sandwich structure is generally composed of three layers of materials. The upper and lower layers are panels or skins of high-strength, high-modulus materials. Or the skin keeps a certain distance, thereby increasing the moment of inertia of the section, which not only improves the bending stiffness of the structure, but also makes full use of the strength of the material. Using the honeycomb core as the core can produce a high-performance, lightweight laminate, called a honeycomb sandwich structure. [0003] The mechanical properties of the existing honeycomb sandwich structure are not ideal. For example, the thermosetting skin honeycomb sandwich structure has problems such as poor toughness and poor impact resistance, which affect its application range...

Claims

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Application Information

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IPC IPC(8): B32B3/12B32B3/08B32B27/32B32B27/30B32B27/12B32B7/10B32B33/00B32B37/06B32B37/10B32B37/08
CPCB32B3/08B32B3/12B32B7/10B32B27/12B32B27/304B32B27/32B32B33/00B32B37/06B32B37/08B32B37/10B32B2307/50
Inventor 巫俊斌文峰汪应山
Owner GUANGDONG XINXIU NEW MATERIAL CO LTD
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