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Thermoplastic composite material with semi-closed honeycomb sandwich structure and preparation method thereof

A composite material and honeycomb interlayer technology, applied in chemical instruments and methods, objects with hollow walls, lamination, etc., can solve the problems of limited contact area between honeycomb and bottom plate, unsatisfactory performance of composite materials, low production efficiency of thermoplastic honeycomb, etc. , to achieve the effect of improving poor bonding strength, large damage tolerance, and increasing strength

Active Publication Date: 2017-05-17
SICHUAN NIUPAISI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in thermoplastic composite materials, due to the poor compatibility between the resin matrix and these honeycomb sandwich structures, the properties of the resulting composite materials are often not ideal. Since the above-mentioned honeycomb structure cannot be further deformed, the formed board cannot fully Make use of the characteristics that thermoplastic composite materials can be further processed by thermoplasticity
In recent years, people have also developed some thermoplastic honeycombs with reference to the traditional honeycomb structure. These honeycombs have effectively solved the above problems, but the new problems brought about are that the production efficiency of this thermoplastic honeycomb is still not high, and the contact area between the honeycomb and the bottom plate is limited. The connection strength between the bottom plate and the interlayer cannot be fully guaranteed, and the overall strength of the composite material cannot be guaranteed naturally.

Method used

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  • Thermoplastic composite material with semi-closed honeycomb sandwich structure and preparation method thereof
  • Thermoplastic composite material with semi-closed honeycomb sandwich structure and preparation method thereof
  • Thermoplastic composite material with semi-closed honeycomb sandwich structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The selected materials are: polyphenylene sulfide film, polyphenylene sulfide pellets, glass fiber, carbon fiber unidirectional tape;

[0034] The preparation method of the thermoplastic composite material with a sandwich structure is as follows:

[0035] 1) Preparation of upper and lower layers (first layer, third layer):

[0036] Weigh 50 parts (mass fraction) of polyphenylene sulfide film and 50 parts (mass fraction) of carbon fiber unidirectional tape, lay up and superimpose polyphenylene sulfide film and carbon fiber unidirectional tape, and place them on a flat vulcanizing machine for lamination. , the molding pressure is 10MPa, the molding temperature is 320°C, and the molding time is 20min. After cooling, take out the product, which is the laminate of the upper and lower layers;

[0037] 2) Preparation of core layer (second layer):

[0038] ① Preparation of long fiber reinforced pellets

[0039] The polyphenylene sulfide pellets and glass fiber yarns are comp...

Embodiment 2

[0048] The selected material is: polyether ether ketone pellets

[0049] The preparation method of the thermoplastic-based resin composite material with a sandwich structure is as follows:

[0050] Pressing polyetheretherketone pellets into polyetheretherketone sheets;

[0051] 1) Preparation of upper and lower cortex

[0052] Cut the polyether ether ketone sheet into 300*300mm size, cut the glass fiber cloth into 300*300mm size, laminate 40 parts (weight) of the sheet and 60 parts (weight) of glass fiber grid cloth on the press Composite to obtain a single-layer composite material sheet; the hot-pressing process conditions are hot-pressing temperature 390°C, hot-pressing pressure 20MPa, and hot-pressing time 300min;

[0053] 2) Preparation of the core layer:

[0054] The polyether ether ketone sheet is placed in a mold and pressed on a press to obtain a core layer. The upper surface of the core layer has a plurality of triangular first grooves, and the lower surface is provi...

Embodiment 3

[0060] The selected material is: polyarylene sulfide sulfone pellets

[0061] The preparation method of the thermoplastic composite material with a sandwich structure is as follows:

[0062] 1) Preparation of upper and lower cortex:

[0063] Add polyarylene sulfide sulfone pellets into the extruder, compound polyarylene sulfide sulfone and carbon fiber grid cloth through the dipping die to obtain polyarylene sulfide sulfone / carbon fiber grid cloth sheet; each section of the extruder The temperature setting is 260°C, 280°C, 310°C, 320°C, 325°C, 325°C, 325°C, 325°C, 325°C, 320°C; the main feeding rate is 30rpm, the host speed is 140rpm, and the traction rate is 20rpm;

[0064] 2) Preparation of the core layer:

[0065] Add polyarylene sulfide sulfone pellets into an injection molding machine, and inject to obtain a core layer. The upper surface of the core layer has a plurality of rectangular first grooves, and the lower surface is provided with a plurality of rectangular seco...

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Abstract

The invention relates to the technical field of high polymer materials, and in particular relates to a thermoplastic composite material with a semi-closed honeycomb sandwich structure and a preparation method thereof. The thermoplastic composite material with the semi-closed honeycomb sandwich structure comprises a three-layer structure, wherein a first layer and a third layer are connected with a second layer through a welding mode separately; a plurality of first grooves are arranged in the upper surface of the second layer; a plurality of second grooves are arranged in the lower surface of the second layer; projections of the first grooves and the second grooves on the upper surface or the lower surface of the second layer are alternately distributed; and the first layer, the second layer and the third layer are made of a thermoplastic polymer, a fiber-enhanced thermoplastic composite material or an inorganic particle-enhanced thermoplastic composite material. The thermoplastic composite material with the semi-closed honeycomb sandwich structure has the advantages of low density and high rigidity, and can be further thermo-plastically processed and molded.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thermoplastic composite material with a semi-closed honeycomb intermediate layer structure and a preparation method thereof. Background technique [0002] Due to the characteristics of high toughness, short molding cycle and low processing energy consumption, continuous fiber reinforced thermoplastic composites are gradually replacing traditional thermosetting composites in many fields and become a new type of material that is widely concerned by the industry. In some areas that require weight reduction, composite materials are generally prepared as sandwich panels with a similar sandwich structure to further reduce the overall weight of the material. Traditional sandwich materials are mainly aluminum or aramid paper honeycomb. However, in thermoplastic composite materials, due to the poor compatibility between the resin matrix and these honeycomb sandwich structures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/28B32B27/12B32B17/02B32B17/10B32B27/18B32B27/08B32B3/28B32B37/10B32B37/06B32B37/08B29D24/00B29D29/00
CPCB29D24/005B29D99/0089B32B3/28B32B27/08B32B27/12B32B27/18B32B27/28B32B37/06B32B37/08B32B37/10B32B2262/101B32B2307/30B32B2307/306B32B2307/558
Inventor 王孝军杨家操杨杰张刚龙盛如张美林
Owner SICHUAN NIUPAISI NEW MATERIALS CO LTD
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