CN106003850A - Cellular sandwich structure and production method thereof - Google Patents
Cellular sandwich structure and production method thereof Download PDFInfo
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- CN106003850A CN106003850A CN201610334926.3A CN201610334926A CN106003850A CN 106003850 A CN106003850 A CN 106003850A CN 201610334926 A CN201610334926 A CN 201610334926A CN 106003850 A CN106003850 A CN 106003850A
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- foam
- melt adhesive
- adhesive film
- hot melt
- honeycomb core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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
The present invention relates to honeycomb sandwich board technical field, be specifically related to honeycomb sandwich structure part and preparation method thereof.
Background technology
Composite sandwich structural is typically compounded to form by trilaminate material, and top and bottom are high intensity, high modulus material
Panel or eyelid covering, intermediate layer is thicker light material, referred to as fuse, forms a whole, and makes two faces
Plate or eyelid covering keep certain distance, thus increase the moment of inertia in cross section, have the most both improved the bending stiffness of structure,
Take full advantage of again the intensity of material.The laminate of high-performance, lightweight can be made as fuse with honeycomb core,
It is referred to as honeycomb sandwich structure.
The mechanical performance of existing honeycomb sandwich structure is undesirable, as thermosetting eyelid covering honeycomb sandwich structure exists tough
Property is poor, and the problems such as shock resistance is bad affect its range.Additionally, due to eyelid covering and honeycomb core
Bonding area is the least, it is difficult to ensure that eyelid covering coheres with necessity of honeycomb core, and degumming layering easily occurs, and
Directly affect the performance and used life of product.
Summary of the invention
Based on this, the present invention provides the preparation method of a kind of honeycomb sandwich structure part, its cellular sandwich prepared
Structural member mechanical performance is strong, be difficult to degumming layering, and service life is long.
The present invention also provides for a kind of honeycomb sandwich structure part.
In order to realize the purpose of the present invention, the present invention by the following technical solutions:
The preparation method of honeycomb sandwich structure part, it comprises the steps:
S1, choose honeycomb core, filled and process in the hole of described honeycomb core, form foam honeycomb core；
S2, choose the first nonwoven layer, the second nonwoven layer, the first hot melt adhesive film layer, the second hot melt adhesive film
Layer also provides the first mould, then heats the first mould to more than the first hot melt adhesive film layer and the second hot melt adhesive film
Layer melting temperature 1 DEG C-100 DEG C, successively by the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core,
Second hot melt adhesive film layer and the second nonwoven layer are placed in the first mould, and matched moulds adjusts the pressure of the first mould
Power is 0.1MPa-1MPa, heat-insulation pressure keeping 3s-120s so that the first nonwoven layer, the first hot melt adhesive film layer,
Foam honeycomb core, the second hot melt adhesive film layer and the second nonwoven layer hot binding, obtain intermediate core after the demoulding；
S3, choose fiber reinforced thermolplastic panel and the second mould is provided, heating the second mould to fiber reinforcement
The forming temperature of thermoplastic panel, is placed in described intermediate core between two panels fiber reinforced thermolplastic panel, and
Being placed in described second mould, matched moulds, the pressure adjusting the second mould is 0.2MPa-5MPa, heat-insulation pressure keeping
15s-150s so that fiber reinforced thermolplastic panel is together with intermediate core hot binding, fast in 30s-90s
The quickly cooling rear demoulding, obtains cellular sandwich intermediate plate；
S4, cellular sandwich intermediate plate is embedded in injection mold, cellular sandwich intermediate plate is molded,
The perimembranous of described cellular sandwich intermediate plate forms bound edge, obtains honeycomb sandwich structure part.
Wherein in some embodiments, between described step S3 and step S4, also there is step S31: go
Overlap except described cellular sandwich intermediate plate perimembranous.
Wherein in some embodiments, in described step S1 honeycomb core be 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 one therein, thickness is 3mm-30mm.
Wherein in some embodiments, in described step S1 foam be PVC foam, PS foam, PU foam,
PUR foam, PEI foam, PI foam, PMI foam, PPSU foam and SAN foam therein
Kind or several combinations, the density of described foam is 40-200kg/m3。
Wherein in some embodiments, in described step S2, the first nonwoven layer is selected from the second nonwoven layer
One in polypropylene, terylene, chinlon, acrylon, polyethylene, polyvinyl chloride fibre, square grammes per square metre is 10g/m2-100g/m2。
Wherein in some embodiments, the first hot melt adhesive film layer and the choosing of the second hot melt adhesive film layer in described step S2
With hot melt adhesive film layer of the same race, and it is selected from PO hot melt adhesive film, TPU hot melt adhesive film, PA hot melt adhesive film, EVA
Hot melt adhesive film and retardation PES hot melt adhesive film one therein, thickness is 0.05mm-0.3mm.
Wherein in some embodiments, in described step S3, the thickness of fiber reinforced thermolplastic panel is 0.2mm
-3mm, the volume content of fiber is 35%-65%, and described fiber reinforced thermolplastic panel is by resin matrix and increasing
Strong phase composition, described resin matrix be HDPE, LDPE, PP, PE, PC, PC/ABS alloy, PA,
TPU、PA6、PA66、PA11、PA12、PPS、PEK、PEEK、PI、PEI、PMMA、PLA、
One in POM, PET and PBT, described enhancing be mutually continuous glass fibre, carbon fiber, aramid fiber,
Basalt fibre, pbo fiber, UHMWPE fiber, PET, alumina fibre, silicon carbide fibre
Woven cloth, unidirectional cloth, woven cloth and one or more in the mixing cloth of unidirectional cloth.
Wherein in some embodiments, in described step S4, injection plastics is glass fibre or fibre reinforced
Plastics, the weight content of fiber is 5%-65%, the plastics base in described glass fibre or carbon fibre reinforced plastic
Body be HDPE, LDPE, PP, PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11,
In PA12, PPS, PEK, PEEK, PI, PEI, PMMA, PLA, POM, PET and PBT
A kind of.
The present invention also adopts the following technical scheme that
A kind of honeycomb sandwich structure part, is made up of above-mentioned method, including cellular sandwich intermediate plate and cladding
In the bound edge of described cellular sandwich intermediate plate perimembranous, described cellular sandwich intermediate plate includes being fitted and connected successively
First fiber reinforced thermolplastic panel, the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core,
Two hot melt adhesive film layers, the second nonwoven layer and the second fiber reinforced thermolplastic panel, described foam honeycomb core
By honeycomb core and be filled in described honeycomb core hole in foam form.
Wherein in some embodiments, described first fiber reinforced thermolplastic panel and the second fibre-reinforced thermoplastic
The thickness of property panel is 0.2mm-3mm, described first hot melt adhesive film layer and the thickness of the second hot melt adhesive film layer
Degree is 0.05mm-0.3mm, and the thickness of described honeycomb core is 3mm-30mm.
The preparation method of honeycomb sandwich structure part of the present invention, first filled and process in honeycomb core, forms bubble
Foam honeycomb core, strengthens the mechanical performances such as the toughness of honeycomb core, impact resistance；Then by the first nonwoven layer,
First hot melt adhesive film layer, foam honeycomb core, the second hot melt adhesive film layer and the second nonwoven layer are placed in the first mould
In carry out hot pressing laminating, form intermediate core, then intermediate core is placed in two fiber reinforced thermolplastic panels it
Between, and carry out hot pressing laminating by the second mould, then carry out injection-molding edge；At fiber reinforced thermolplastic panel
And there is between foam honeycomb core nonwoven layer, due to the good toughness of non-woven fabrics own, thus enhance whole knot
The mechanical performance of component；And carried out by nonwoven layer between fiber reinforced thermolplastic panel and foam honeycomb core
Bonding, increases both bond areas, and injection-molding edge strengthens the steadiness of structural member, the second mold hot
The means of rapid heating and cooling are used during pressure, cooling rapidly after hot pressing is firm so that glued steadiness is higher, by
This makes this structural member be not susceptible to degumming layering, improves its service life.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of the honeycomb sandwich structure part described in a preferred embodiment of the present invention.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with accompanying drawing, the present invention is described more fully.This
Bright can realize in many different forms, however it is not limited to embodiment described herein.On the contrary, carry
Purpose for these embodiments is to make the understanding to the disclosure more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can be directly at another yuan
On part or element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can
To be directly to another element or to may be simultaneously present centering elements.
Unless otherwise defined, all of technology used herein and scientific terminology and the technology belonging to the present invention
The implication that the technical staff in field is generally understood that is identical.The art used the most in the description of the invention
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting the present invention.
The preparation method of honeycomb sandwich structure part of the present invention, it comprises the steps:
S1, choosing honeycomb core, honeycomb core has multiple hole, filled and process in the hole of honeycomb core, forms bubble
Foam honeycomb core.In the present embodiment, the thickness of honeycomb core is 3mm-30mm, and thickness is according to integral structure component
Depending on the thickness needed.The material of honeycomb core is PE honeycomb core, PP honeycomb core, PVC honeycomb core, PC honeybee
Nest core, PET honeycomb core, paper honeycomb core, Nomex honeycomb core and aluminium honeycomb core one therein.Foam
For PVC foam, PS foam, PU foam, PUR foam, PEI foam, PI foam, PMI foam,
PPSU foam and one or more the combination therein of SAN foam, the density of foam is 40-200kg/m3。
When foam selects different materials, fill in different types of foam, or same hole can be filled in a hole
A kind of foam, fills other foams different types of in other holes.
S2, choose the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the second hot melt adhesive film
Layer also provides the first mould, by the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, second
Hot melt adhesive film layer and foam honeycomb core cut into same size, neat, so to ensure the structural member perimembranous made
Post-heating the first mould is to the melting temperature 1 DEG C-100 DEG C more than hot melt adhesive film, totally at 80 DEG C-180 DEG C, as
The fusing point of PES is 135 DEG C, is heated to 145 DEG C during hot pressing.Successively by the first nonwoven layer, the first PUR
Film layer, foam honeycomb core, the second hot melt adhesive film layer and the second nonwoven layer are placed in the first mould, arrange
Aliging to each layer, matched moulds, hot pressing temperature is 80 DEG C-180 DEG C, and the pressure adjusting the first mould is 0.1MPa
-1MPa, heat-insulation pressure keeping 3s-120s so that the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core,
Second hot melt adhesive film layer and the second nonwoven layer hot binding, obtain intermediate core after the demoulding.The most different
Hot melt adhesive film has different melting temperatures, sets the temperature of mould according to the melting temperature of hot melt adhesive film, its
In the first hot melt adhesive film layer and the second hot melt adhesive film layer need to use identical hot melt adhesive film, in order to set more easily
Putting the temperature of the first mould, the melting temperature preventing the first hot melt adhesive film layer and the second hot melt adhesive film layer is different,
And affect the process of hot pressing laminating.First hot melt adhesive film layer and the second hot melt adhesive film layer be selected from PO hot melt adhesive film,
TPU hot melt adhesive film, PA hot melt adhesive film, EVA hot-melt adhesive film and retardation PES hot melt adhesive film one therein,
And first the thickness of hot melt adhesive film layer and the second hot melt adhesive film layer be 0.05mm-0.3mm.First nonwoven layer
It is selected from the one in polypropylene, terylene, chinlon, acrylon, polyethylene, polyvinyl chloride fibre with the second nonwoven layer, square
Grammes per square metre is 10g/m2-100g/m2.First nonwoven layer and the second nonwoven layer can be selected for identical or different kind.
S3, choose fiber reinforced thermolplastic panel and the second mould is provided, heating the second mould to fiber reinforcement
The forming temperature of thermoplastic panel, temperature is 150 DEG C-400 DEG C, such as the molding temperature of fiber reinforcement TPU panel
Degree is 180 DEG C.Intermediate core is placed between identical two panels fiber reinforced thermolplastic panel, is placed in the second mould
In tool, matched moulds, the pressure adjusting the second mould is 0.2MPa-5MPa, heat-insulation pressure keeping 15s-150s so that
Fiber reinforced thermolplastic panel together with intermediate core hot binding, the rapidly demoulding after cooling in 30s-90s,
Obtain cellular sandwich intermediate plate.Fiber reinforced thermolplastic panel is by resin matrix and enhancing phase composition, the most of the same race
It is different that fibrid strengthens thermoplastic panel's forming temperature, such as, select resin matrix, glass fiber reinforcement and carbon
The panel forming temperature that fiber reinforcement is formed is different.In the present embodiment, the thickness of fiber reinforced thermolplastic panel
Degree is 0.2mm-3mm, and the volume content of fiber is 35%-65%, i.e. strengthens in resin matrix and enhancing
Mutually middle volume accounting 35%-65%.Resin matrix selects HDPE, LDPE, PP, PE, PC, PC/ABS
Alloy, PA, TPU, PA6, PA66, PA11, PA12, PPS, PEK, PEEK, PI, PEI, PMMA,
One in PLA, POM, PET and PBT, strengthens and selects continuous glass fibre, carbon fiber, aramid fiber mutually
Fiber, basalt fibre, pbo fiber, UHMWPE fiber, PET, alumina fibre, carbonization
Silica fibre woven cloth, unidirectional cloth, woven cloth and one or more in the mixing cloth of unidirectional cloth are many when selecting
Plant and strengthen phase time, for multiple fibre-reinforced fiber reinforced thermolplastic panel.
S31, the overlap of removal cellular sandwich intermediate plate perimembranous, in order to make its smooth surface, more convenient injection.
S4, cellular sandwich intermediate plate is embedded in injection mold, cellular sandwich intermediate plate is molded,
The perimembranous of cellular sandwich intermediate plate forms bound edge, obtains honeycomb sandwich structure part.Wherein injection plastics is glass
Glass fiber or carbon fibre reinforced plastic, the weight content of fiber is 5%-65%, glass fibre or fibre reinforced
Plastic substrate in plastics be HDPE, LDPE, PP, PE, PC, PC/ABS alloy, PA, TPU,
PA6、PA66、PA11、PA12、PPS、PEK、PEEK、PI、PEI、PMMA、PLA、POM、
One in PET and PBT.
Refer to Fig. 1, the preparation method of above-mentioned honeycomb sandwich structure part the honeycomb sandwich structure part 100 prepared,
Including cellular sandwich intermediate plate 10 and the bound edge 20 that is coated on cellular sandwich intermediate plate perimembranous, in cellular sandwich
Between plate 10 include being fitted and connected successively first fiber reinforced thermolplastic panel the 11, first nonwoven layer 12,
First hot melt adhesive film layer 13, foam honeycomb core the 14, second hot melt adhesive film layer the 15, second nonwoven layer 16 with
And the second fiber reinforced thermolplastic panel 17, foam honeycomb core 14 is by honeycomb core 141 and is filled in honeycomb core
Hole in foam composition.Wherein the first fiber reinforced thermolplastic panel 11 and the second fiber reinforced thermolplastic face
The thickness of plate 17 is 0.2mm-3mm, the first hot melt adhesive film layer 13 and thickness of the second hot melt adhesive film layer 15
Degree is 0.05mm-0.3mm, and the thickness of honeycomb core is 3mm-30mm.
The present invention first filled and process in honeycomb core, forms foam honeycomb core, strengthen honeycomb core toughness,
The mechanical performances such as impact resistance；Then by the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core,
Second hot melt adhesive film layer and the second nonwoven layer are placed in the first mould and carry out hot pressing laminating, form intermediate core,
Then intermediate core is placed between two fiber reinforced thermolplastic panels, and carries out hot pressing patch by the second mould
Close, then carry out injection-molding edge；Between fiber reinforced thermolplastic panel and foam honeycomb core, there is nonwoven layer,
Due to the good toughness of non-woven fabrics own, thus enhance the mechanical performance of total part；And fibre-reinforced thermoplastic
Property panel and foam honeycomb core between bondd by nonwoven layer, increase both bond areas, note
Mould bound edge and strengthen the steadiness of structural member, use the means of rapid heating and cooling during the second mould heat pressure, in hot pressing
Cooling rapidly after firm so that glued steadiness is higher, so that this structural member is not susceptible to degumming layering,
Improve its service life.
Embodiment
In the present embodiment, the preparation method of described honeycomb sandwich structure part, it comprises the steps:
S1, choosing honeycomb core, honeycomb core has multiple hole, filled and process in the hole of honeycomb core, forms bubble
Foam honeycomb core.In the present embodiment, the thickness of honeycomb core is 6mm.The material of honeycomb core is PC honeycomb core,
Filled PVC foam, obtains foam honeycomb core.
S2, choose the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the second hot melt adhesive film
Layer, and provides the first mould, by the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the
Two hot melt adhesive film layers and foam honeycomb core cut into same size, neat to ensure the structural member perimembranous made,
First hot melt adhesive film layer and the second hot melt adhesive film layer are the TPU hot melt adhesive film layer of 0.05mm, the first nonwoven
Layer of cloth and the second nonwoven layer are PET nonwoven layer, and specification is 30g/m2；Then heat the first mould to arrive
More than the melting temperature 120 DEG C of the first hot melt adhesive film layer and the second hot melt adhesive film layer, successively by the first nonwoven layer,
First hot melt adhesive film layer, foam honeycomb core, the second hot melt adhesive film layer and the second nonwoven layer are placed in the first mould
In tool, arranging and align to each layer, matched moulds hot pressing, the pressure adjusting the first mould is 0.5MPa, and insulation is protected
Pressure 60s so that the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core, the second hot melt adhesive film layer with
And the second nonwoven layer hot binding, obtain intermediate core after the demoulding.
S3, choosing fiber reinforced thermolplastic panel and provide the second mould, fiber reinforced thermolplastic panel is TPU
The thermoplastic panel compound with glass fibre, i.e. uses glass fiber reinforcement TPU panel, and the volume of fiber contains
Amount is 45%, and thickness is 0.5mm, heats the second mould to 170 DEG C, intermediate core is placed in identical two panels fine
Dimension strengthens between thermoplastic panel, is placed in the second mould, matched moulds, and the pressure adjusting the second mould is
1.5MPa, heat-insulation pressure keeping 30s so that fiber reinforced thermolplastic panel together with intermediate core hot binding,
The demoulding after cooling down rapidly in 30s, obtains cellular sandwich intermediate plate.Fiber reinforced thermolplastic panel is by resin matrix
With enhancing phase composition, variety classes fiber reinforced thermolplastic panel forming temperature is different, such as, select resin base
Body, glass fiber reinforcement is different from the panel forming temperature that fibre reinforced is formed.
S31, the overlap of removal cellular sandwich intermediate plate perimembranous, in order to make its smooth surface, more convenient injection.
S4, cellular sandwich intermediate plate is embedded in injection mold, the glass TPU using weight content to be 20%
Being molded cellular sandwich intermediate plate, injection pressure is 500N, and injection temperature is 190 DEG C, injection mold
Temperature be 80 DEG C, injection time is 4s.Perimembranous at cellular sandwich intermediate plate forms bound edge, obtains honeycomb
Sandwich structure part.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (10)
1. the preparation method of a honeycomb sandwich structure part, it is characterised in that comprise the steps:
S1, choose honeycomb core, filled and process in the hole of described honeycomb core, form foam honeycomb core；
S2, choose the first nonwoven layer, the second nonwoven layer, the first hot melt adhesive film layer, the second hot melt adhesive film
Layer, and the first mould is provided, then heat the first mould to more than the first hot melt adhesive film layer and the second PUR
The melting temperature of film layer 1 DEG C-100 DEG C, successively by the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb
Core, the second hot melt adhesive film layer and the second nonwoven layer are placed in the first mould, and matched moulds adjusts the first mould
Pressure be 0.1MPa-1MPa, heat-insulation pressure keeping 3s-120s so that the first nonwoven layer, the first PUR
Film layer, foam honeycomb core, the second hot melt adhesive film layer and the second nonwoven layer hot binding, obtain after the demoulding
Intermediate core；
S3, choose fiber reinforced thermolplastic panel and the second mould is provided, heating the second mould to fiber reinforcement
The forming temperature of thermoplastic panel, is placed in described intermediate core between two panels fiber reinforced thermolplastic panel, and
Being placed in described second mould, matched moulds, the pressure adjusting the second mould is 0.2MPa-5MPa, heat-insulation pressure keeping
15s-150s so that fiber reinforced thermolplastic panel is together with intermediate core hot binding, fast in 30s-90s
The quickly cooling rear demoulding, obtains cellular sandwich intermediate plate；
S4, cellular sandwich intermediate plate is embedded in injection mold, cellular sandwich intermediate plate is molded,
The perimembranous of described cellular sandwich intermediate plate forms bound edge, obtains honeycomb sandwich structure part.
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
Between step S3 and step S4, also there is step S31: remove flying of described cellular sandwich intermediate plate perimembranous
Limit.
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
In step S1, honeycomb core is PE honeycomb core, PP honeycomb core, PVC honeycomb core, PC honeycomb core, PET honeybee
Nest core, paper honeycomb core, Nomex honeycomb core and aluminium honeycomb core one therein, thickness is 3mm-30mm.
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
In step S1, foam is PVC foam, PS foam, PU foam, PUR foam, PEI foam, PI bubble
One or more the combination therein of foam, PMI foam, PPSU foam and SAN foam, described foam
Density be 40-200kg/m3。
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
In step S2 the first nonwoven layer and the second nonwoven layer be selected from polypropylene, terylene, chinlon, acrylon, polyethylene,
One in polyvinyl chloride fibre, square grammes per square metre is 10g/m2-100g/m2。
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
In step S2, the first hot melt adhesive film layer and the second hot melt adhesive film layer select hot melt adhesive film layer of the same race, and are selected from PO
Hot melt adhesive film, TPU hot melt adhesive film, PA hot melt adhesive film, EVA hot-melt adhesive film and retardation PES hot melt adhesive film its
In one, thickness is 0.05mm-0.3mm.
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
In step S3, the thickness of fiber reinforced thermolplastic panel is 0.2mm-3mm, and the volume content of fiber is
35%-65%, described fiber reinforced thermolplastic panel is by resin matrix and enhancing phase composition, described resin matrix
For HDPE, LDPE, PP, PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11,
In PA12, PPS, PEK, PEEK, PI, PEI, PMMA, PLA, POM, PET and PBT
One, described enhancing is continuous glass fibre, carbon fiber, aramid fiber, basalt fibre, PBO fibre mutually
Dimension, UHMWPE fiber, PET, alumina fibre, silicon carbide fibre woven cloth, unidirectional cloth, volume
Weave cotton cloth and one or more in the mixing cloth of unidirectional cloth.
The preparation method of honeycomb sandwich structure part the most according to claim 1, it is characterised in that: described
In step S4, injection plastics is glass fibre or carbon fibre reinforced plastic, and the weight content of fiber is
5%-65%, the plastic substrate in described glass fibre or carbon fibre reinforced plastic is HDPE, LDPE, PP,
PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11, PA12, PPS, PEK,
One in PEEK, PI, PEI, PMMA, PLA, POM, PET and PBT.
9. a honeycomb sandwich structure part, it is characterised in that by the method described in any one of claim 1～8
Make, including cellular sandwich intermediate plate and the bound edge that is coated on described cellular sandwich intermediate plate perimembranous, described
The first fiber reinforced thermolplastic panel that cellular sandwich intermediate plate includes being fitted and connected successively, the first nonwoven layer,
First hot melt adhesive film layer, foam honeycomb core, the second hot melt adhesive film layer, the second nonwoven layer and the second fiber
Strengthen thermoplastic panel, described foam honeycomb core by honeycomb core and be filled in described honeycomb core hole in bubble
Foam forms.
Honeycomb sandwich structure part the most according to claim 9, it is characterised in that: described first fiber
Strengthen the thickness of thermoplastic panel and the second fiber reinforced thermolplastic panel and be 0.2mm-3mm, described the
The thickness of one hot melt adhesive film layer and the second hot melt adhesive film layer is 0.05mm-0.3mm, the thickness of described honeycomb core
Degree is 3mm-30mm.
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