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Composite honeycomb sandwich board and preparation method thereof

A composite honeycomb and sandwich panel technology, which is applied in the field of composite materials, can solve the problems of non-environmental protection, easy delamination, and low bonding strength of adhesives, and achieve the effects of not easy delamination, improved bonding strength, and environmental friendliness

Active Publication Date: 2017-07-07
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing adhesives are usually solvent-based adhesives, which are not environmentally friendly; and the adhesive strength of the adhesive is not high, and the surface layer (aluminum plate or resin composite material plate) and the sandwich material are easy to delaminate

Method used

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  • Composite honeycomb sandwich board and preparation method thereof
  • Composite honeycomb sandwich board and preparation method thereof
  • Composite honeycomb sandwich board and preparation method thereof

Examples

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preparation example Construction

[0037] At the same time, the present invention also provides a method for preparing the above-mentioned composite honeycomb sandwich panel, which includes the following steps: S1, preparing a hot-melt epoxy resin prepreg, the hot-melt epoxy resin prepreg The impregnating material comprises reinforcing material and epoxy resin composition, and described epoxy resin composition contains epoxy resin, latent curing agent, accelerator, coupling agent and optional toughening agent and optional filler; S2 . Laminating the epoxy resin prepreg on one or both sides of the aluminum honeycomb sandwich to obtain a laminated sheet, and heat-pressing the laminated sheet to obtain the composite honeycomb sandwich panel. For the requirements of "epoxy resin prepreg" and "epoxy resin composition", please refer to the previous description, and will not repeat them here.

[0038] According to the preparation method of the composite honeycomb sandwich panel of the present invention, the S1 include...

Embodiment 1

[0042] Used to illustrate the composite honeycomb sandwich panel of the present invention and its preparation method

[0043] Epoxy resin composition: 40 parts by weight of bisphenol A type epoxy resin (NPEL-128 commercially available from South Asia epoxy resin, epoxy value 0.51), novolak type epoxy resin (631 commercially available from South Asia, ring Oxygen value is 0.57) 20 weight parts, polyurethane modified epoxy resin (commercially available from the HypoxUA10 of CVC, epoxy value 0.46,) 6 parts by weight, dicyandiamide (commercially available from the 3636AS of Adidas) 5 parts by weight, 1.5 parts by weight of phenyldimethylurea (commercially available from CVC u405), aluminum hydroxide (particle size D 50 8 microns) 15 parts by weight, aluminum powder (particle size D 50 5 microns) 8 parts by weight, amino group-containing silane coupling agent N-(6-aminohexyl) aminomethyltriethoxysilane (commercially available from Gelest company's SIA0592.6) 1 part by weight, epox...

Embodiment 2-9

[0047] Used to illustrate the composite honeycomb sandwich panel of the present invention and its preparation method

[0048] Epoxy resin composition: with reference to the epoxy resin composition in Example 1, the difference is that the consumption of each raw material is as shown in Table 1.

[0049] Table 1.

[0050]

[0051]

[0052] Preparation of hot-melt epoxy resin prepreg: same as embodiment 1.

[0053] Preparation of the composite honeycomb sandwich panel: the same as in the examples to obtain the composite honeycomb sandwich panel.

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Abstract

The invention discloses a composite honeycomb sandwich board and a preparation method of the composite honeycomb sandwich board. The composite honeycomb sandwich board comprises an aluminum honeycomb sandwich and an epoxy resin reinforcing material surface layer composited on the surface of one or two sides of the aluminum honeycomb sandwich, the epoxy resin reinforcing material surface layer is a solidifying product of a hot melting type epoxy resin prepreg, the hot melting type epoxy resin prepreg comprises a reinforcing material and an epoxy resin composition, the epoxy resin composition comprises an epoxy resin, a latent solidifying agent, an accelerant, a coupling agent, optional flexibilizer and optional filler, and the coupling agent comprises a silane coupling agent containing an amino. The provided composite honeycomb sandwich board avoids using an extra solvent type adhesive, and is further environmentally friendly; meanwhile, the bonding strength between the aluminum honeycomb sandwich and the epoxy resin reinforcing material surface layer is improved, and the composite honeycomb sandwich board does not delaminate easily.

Description

technical field [0001] The invention relates to a composite material with a sandwich structure, in particular to a composite honeycomb sandwich panel and a preparation method thereof. Background technique [0002] Honeycomb sandwich panel is widely used sandwich panel at present. It has light weight, high specific strength and specific rigidity structural characteristics and functional characteristics such as sound insulation and heat insulation. It has been widely used in aerospace, ships, high-speed trains, fan blades, Engineering fields such as civil construction. The honeycomb sandwich panel is composed of a thick sandwich part in the middle (honeycomb sandwich panel) and a thin surface layer (metal plate or resin composite material plate) on the upper and lower surfaces. The inner and outer layers mainly bear most of the bending moment of the sandwich panel, while the middle honeycomb sandwich part mainly bears the shear force, while ensuring the reliable connection of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B27/06B32B27/38B32B27/18B32B27/26B32B37/06B32B37/10B32B37/12B32B7/12C08L63/00C08L63/04C08K13/04C08K7/14C08K5/544C08K5/5435
CPCB32B3/12B32B7/12B32B27/06B32B27/18B32B27/26B32B27/38B32B37/06B32B37/10B32B37/12C08L63/00B32B2309/02B32B2309/12C08L2205/03C08L2205/025C08L2205/02C08L63/04C08K13/04C08K7/14C08K5/544C08K5/5435B32B5/02B32B7/04B32B15/092B32B15/14B32B15/20B32B27/20B32B2250/03B32B2250/40B32B2255/02B32B2255/26B32B2260/023B32B2260/046B32B2262/101B32B2264/0214B32B2264/0257B32B2264/10B32B2264/102B32B2264/104B32B2264/105B32B2307/306B32B2307/4026B32B2307/536B32B2307/546B32B2307/732B32B2307/748B32B2419/00B32B2603/00B32B2605/10B32B2605/12B32B2605/18
Inventor 周维孙永亮唐富兰
Owner BYD CO LTD
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