CN106003850B - Honeycomb sandwich structure part and preparation method thereof - Google Patents
Honeycomb sandwich structure part and preparation method thereof Download PDFInfo
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- CN106003850B CN106003850B CN201610334926.3A CN201610334926A CN106003850B CN 106003850 B CN106003850 B CN 106003850B CN 201610334926 A CN201610334926 A CN 201610334926A CN 106003850 B CN106003850 B CN 106003850B
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
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Classifications
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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 shape; Layered products comprising a layer 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 shape; Layered products comprising a layer 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 shape; Layered products comprising a layer 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
-
- 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
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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 shape; Layered products comprising a layer 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 shape; Layered products comprising a layer 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 shape; Layered products comprising a layer 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
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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
- 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
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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
- 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
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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
- 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
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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
- 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
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses honeycomb sandwich structure parts and preparation method thereof.This method comprises the following steps：S1, honeycomb core and filled and process are chosen, forms foam honeycomb core；S2, two-layer nonwoven layer and two layers of hot melt adhesive film layer are chosen, nonwoven layer, hot melt adhesive film layer, foam honeycomb core, hot melt adhesive film layer and nonwoven layer is placed in the first mold successively, adjustment temperature and pressure carries out hot binding, obtains intermediate core；S3, intermediate core is placed between two fiber reinforced thermolplastic panels, be placed in the second mold, adjustment temperature and pressure carries out hot binding, and rapid cooling, obtains cellular sandwich intermediate plate after the completion of hot pressing；S4, in cellular sandwich intermediate plate circumference injection-molding edge to get to honeycomb sandwich structure part.The preparation method of honeycomb sandwich structure part of the present invention, the honeycomb sandwich structure part mechanical performance prepared is strong, is not easy degumming layering, and service life is long.
Description
Technical field
The present invention relates to honeycomb sandwich board technical fields, and in particular to honeycomb sandwich structure part and preparation method thereof.
Background technology
Composite sandwich structural is generally compounded to form by trilaminate material, top and bottom be high intensity, high modulus material panel or
Covering, middle layer are thicker light material, referred to as fuse, are formed a whole, and two panels or covering is made to keep a spacing
From so as to increase the moment of inertia in section, not only having improved the bending stiffness of structure in this way, but also take full advantage of the intensity of material.Use bee
Nest core can make the laminate of high-performance, lightweight, referred to as honeycomb sandwich structure as fuse.
The mechanical performance of existing honeycomb sandwich structure is undesirable, as thermosetting property covering honeycomb sandwich structure there are toughness compared with
The problems such as difference, shock resistance is bad, influences its use scope.It is very small additionally, due to the Bonding area of covering and honeycomb core,
It is difficult to ensure that necessity of covering and honeycomb core is cohered, degumming layering easily occurs, and directly affect the performance of product and using the longevity
Life.
Invention content
Based on this, the present invention provides a kind of preparation method of honeycomb sandwich structure part, the honeycomb sandwich structure part prepared
Mechanical performance is strong, is not easy degumming layering, and service life is long.
The present invention also provides a kind of honeycomb sandwich structure parts.
In order to achieve the object of the present invention, the present invention uses following technical scheme：
The preparation method of honeycomb sandwich structure part, includes the following steps：
S1, honeycomb core is chosen, the filled and process in the hole of the honeycomb core forms foam honeycomb core；
S2, the first nonwoven layer, the second nonwoven layer, the first hot melt adhesive film layer, the second hot melt adhesive film layer are chosen and is provided
First mold, then heat the first mold to 1 DEG C of the melting temperature more than the first hot melt adhesive film layer and the second hot melt adhesive film layer-
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
Cloth is placed in the first mold, molding, and the pressure of the first mold of adjustment is 0.1MPa-1MPa, heat-insulation pressure keeping 3s-120s so that
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 sinter
It closes, intermediate core is obtained after demoulding；
S3, it chooses fiber reinforced thermolplastic panel and the second mold is provided, the second mold of heating to fiber reinforced thermolplastic
The forming temperature of panel between the intermediate core is placed in two panels fiber reinforced thermolplastic panel, is placed in second mold
In, molding, the pressure of the second mold of adjustment is 0.2MPa-5MPa, heat-insulation pressure keeping 15s-150s so that fiber reinforced thermolplastic face
Plate demoulds after being cooled down rapidly in 30s-90s together with intermediate core hot binding, obtains cellular sandwich intermediate plate；
S4, cellular sandwich intermediate plate is embedded in injection mold, cellular sandwich intermediate plate is molded, in the honeycomb
The circumference of sandwich intermediate plate forms bound edge, obtains honeycomb sandwich structure part.
In wherein some embodiments, between the step S3 and step S4, also with step S31：Remove the honeycomb
The overlap of sandwich intermediate plate circumference.
In wherein some embodiments, honeycomb core is PE honeycomb cores, PP honeycomb cores, PVC honeycomb cores, PC in the step S1
Honeycomb core, PET honeycomb cores, paper honeycomb core, Nomex honeycomb cores and aluminium honeycomb core one kind therein, thickness 3mm-30mm.
In wherein some embodiments, in the step S1 foam for PVC foams, PS foams, PU foams, PUR foam,
The combination of PEI foams, PI foams, PMI foams, PPSU foams and SAN foams one or more therein, the foam it is close
It spends for 40-200kg/m3。
In wherein some embodiments, in the step S2 the first nonwoven layer and the second nonwoven layer be selected from polypropylene fibre,
One kind in terylene, polyamide fibre, acrylic fibers, polyethylene, polyvinyl chloride fibre, square grammes per square metre are 10g/m2-100g/m2。
In wherein some embodiments, the first hot melt adhesive film layer and the second hot melt adhesive film layer choosing are with of the same race in the step S2
Hot melt adhesive film layer, and it is selected from PO hot melt adhesive films, TPU hot melt adhesive films, PA hot melt adhesive films, EVA hot-melt adhesive film and retardation PES hot melt adhesive
Film one kind therein, thickness 0.05mm-0.3mm.
In wherein some embodiments, the thickness of fiber reinforced thermolplastic panel is 0.2mm-3mm in the step S3, fine
The volume content of dimension is 35%-65%, and the fiber reinforced thermolplastic panel is by resin matrix and enhancing phase composition, the resin
Matrix for HDPE, LDPE, PP, PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11, PA12, PPS, PEK, PEEK,
One kind in PI, PEI, PMMA, PLA, POM, PET and PBT, the reinforced phase is continuous glass fibre, carbon fiber, aramid fiber are fine
Dimension, basalt fibre, pbo fiber, UHMWPE fibers, PET fiber, alumina fibre, silicon carbide fibre woven cloth, unidirectional cloth,
It is one or more in the mixing cloth of woven cloth and unidirectional cloth.
In wherein some embodiments, in the step S4 injection plastics be glass fibre or carbon fibre reinforced plastic,
The weight content of fiber is 5%-65%, the plastic substrate in the glass fibre or carbon fibre reinforced plastic is HDPE, LDPE,
PP, PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11, PA12, PPS, PEK, PEEK, PI, PEI, PMMA, PLA,
One kind in POM, PET and PBT.
The present invention also adopts the following technical scheme that：
A kind of honeycomb sandwich structure part, is made of above-mentioned method, including cellular sandwich intermediate plate and is coated on described
The bound edge of cellular sandwich intermediate plate circumference, the cellular sandwich intermediate plate include the first fibre-reinforced thermoplastic being fitted and connected successively
Property panel, the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core, the second hot melt adhesive film layer, the second nonwoven layer and
Second fiber reinforced thermolplastic panel, the foam honeycomb core is by honeycomb core and the foam being filled in the hole of the honeycomb core
Composition.
In wherein some embodiments, the first fiber reinforced thermolplastic panel and the second fiber reinforced thermolplastic panel
Thickness be 0.2mm-3mm, the thickness of the first hot melt adhesive film layer and the second hot melt adhesive film layer is 0.05mm-0.3mm,
The thickness of the honeycomb core is 3mm-30mm.
The preparation method of honeycomb sandwich structure part of the present invention, first the filled and process in honeycomb core, forms foam honeycomb
Core strengthens the mechanical performances such as toughness, the impact resistance of honeycomb core；Then by the first nonwoven layer, the first hot melt adhesive film layer, bubble
Foam honeycomb core, the second hot melt adhesive film layer are placed in progress hot pressing in the first mold with the second nonwoven layer and are bonded, and form intermediate core, so
Between intermediate core is placed in two fiber reinforced thermolplastic panels afterwards, and passes through the second mold and carry out hot pressing fitting, then noted
Mould bound edge；There is nonwoven layer between fiber reinforced thermolplastic panel and foam honeycomb core, due to non-woven fabrics good toughness itself,
So as to enhance the mechanical performance of whole knot component；And pass through non-woven fabrics between fiber reinforced thermolplastic panel and foam honeycomb core
Layer is bonded, the bond area both increased, and injection-molding edge strengthens the stability of structural member, and when the second mould heat pressure adopts
With the means of rapid heating and cooling, cooled down rapidly after hot pressing consolidates so that glued stability higher, so that the structural member is not easy
Degumming layering occurs, improves its service life.
Description of the drawings
Fig. 1 is the partial sectional view of the honeycomb sandwich structure part described in a preferred embodiment of the present invention.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below in conjunction with attached drawing.The present invention can be with
It realizes in many different forms, however it is not limited to embodiment described herein.On the contrary, provide the purpose of these embodiments
It is the understanding more thorough and comprehensive made to the disclosure.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
The preparation method of honeycomb sandwich structure part of the present invention, includes the following steps：
S1, honeycomb core is chosen, honeycomb core has multiple holes, and the filled and process in the hole of honeycomb core forms foam honeycomb core.
In the present embodiment, the thickness of honeycomb core is 3mm-30mm, and thickness is depending on the thickness that integral structure component needs.Honeycomb core
Material for PE honeycomb cores, PP honeycomb cores, PVC honeycomb cores, PC honeycomb cores, PET honeycomb cores, paper honeycomb core, Nomex honeycomb cores and
Aluminium honeycomb core one kind therein.Foam is PVC foams, PS foams, PU foams, PUR foam, PEI foams, PI foams, PMI bubble
The combination of foam, PPSU foams and SAN foams one or more therein, the density of foam is 40-200kg/m3.Foam is selected
During different materials, it can be filled in a hole and a kind of foam is filled in different types of foam or same hole, filled out in other holes
Fill other different types of foams.
S2, the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the second hot melt adhesive film layer are chosen and is provided
First mold, by the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the second hot melt adhesive film layer and foam honeycomb
Core cuts into identical size, to ensure that the structural member circumference made is neat, then heats the first mold to more than hot melt adhesive film
1 DEG C -100 DEG C of melting temperature, overall at 80 DEG C -180 DEG C, if the fusing point of PES is 135 DEG C, when hot pressing, is heated to 145 DEG C.Successively
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
It in one mold, arranges to each layer of alignment, molding, hot pressing temperature is 80 DEG C -180 DEG C, and the pressure of the first mold of adjustment 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 heat
Melten gel film layer and the second nonwoven layer hot binding, intermediate core is obtained after demoulding.Wherein different hot melt adhesive films has difference
Melting temperature, according to the melting temperature of hot melt adhesive film set mold temperature, wherein the first hot melt adhesive film layer with second hot melt
Adhesive film need to use identical hot melt adhesive film, more easily to set the temperature of the first mold, prevent the first hot melt adhesive film layer
It is different from the melting temperature of the second hot melt adhesive film layer, and influence the process of hot pressing fitting.First hot melt adhesive film layer and the second hot melt
Adhesive film is selected from PO hot melt adhesive films, TPU hot melt adhesive films, PA hot melt adhesive films, EVA hot-melt adhesive film and retardation PES hot melt adhesive film wherein
One kind, and the thickness of the first hot melt adhesive film layer and the second hot melt adhesive film layer is 0.05mm-0.3mm.First nonwoven layer and the
Two nonwoven layers are selected from one kind in polypropylene fibre, terylene, polyamide fibre, acrylic fibers, polyethylene, polyvinyl chloride fibre, and square grammes per square metre is 10g/m2-100g/
m2.Identical or different type can be selected with the second nonwoven layer in first nonwoven layer.
S3, it chooses fiber reinforced thermolplastic panel and the second mold is provided, the second mold of heating to fiber reinforced thermolplastic
The forming temperature of panel, temperature are 150 DEG C -400 DEG C, if the forming temperature of fiber reinforcement TPU panels is 180 DEG C.By intermediate core
It is placed between identical two panels fiber reinforced thermolplastic panel, is placed in the second mold, mold, adjust the pressure of the second mold
For 0.2MPa-5MPa, heat-insulation pressure keeping 15s-150s so that fiber reinforced thermolplastic panel together with intermediate core hot binding,
It is demoulded after being cooled down rapidly in 30s-90s, obtains cellular sandwich intermediate plate.Fiber reinforced thermolplastic panel is by resin matrix with increasing
Strong phase composition, variety classes fiber reinforced thermolplastic panel forming temperature is different, such as selects resin matrix, glass fiber reinforcement
It is different from the panel forming temperature that fibre reinforced is formed.In the present embodiment, the thickness of fiber reinforced thermolplastic panel is
0.2mm-3mm, the volume content of fiber is 35%-65%, i.e. reinforced phase volume accounting 35%- in resin matrix and reinforced phase
65%.Resin matrix select HDPE, LDPE, PP, PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11, PA12, PPS,
One kind in PEK, PEEK, PI, PEI, PMMA, PLA, POM, PET and PBT, reinforced phase select continuous glass fibre, carbon fiber,
Aramid fiber, basalt fibre, pbo fiber, UHMWPE fibers, PET fiber, alumina fibre, silicon carbide fibre woven cloth, list
It is one or more in the mixing cloth of Xiang Bu, woven cloth and unidirectional cloth, when selecting various reinforced phase, for multiple fiber enhancing
Fiber reinforced thermolplastic panel.
S31, the overlap for removing cellular sandwich intermediate plate circumference to make its surface smooth, are more convenient injection.
S4, cellular sandwich intermediate plate is embedded in injection mold, cellular sandwich intermediate plate is molded, in cellular sandwich
The circumference of intermediate plate forms bound edge, obtains honeycomb sandwich structure part.Wherein injection plastics are glass fibre or fibre reinforced
Plastics, the weight content of fiber are 5%-65%, the plastic substrate in glass fibre or carbon fibre reinforced plastic is HDPE,
LDPE, PP, PE, PC, PC/ABS alloy, PA, TPU, PA6, PA66, PA11, PA12, PPS, PEK, PEEK, PI, PEI, PMMA,
One kind in PLA, POM, PET and PBT.
Fig. 1 is please referred to, the honeycomb sandwich structure part 100 prepared by the preparation method of above-mentioned honeycomb sandwich structure part, including
Cellular sandwich intermediate plate 10 and the bound edge 20 for being coated on cellular sandwich intermediate plate circumference, cellular sandwich intermediate plate 10 are included successively
The first fiber reinforced thermolplastic panel 11, the first nonwoven layer 12, the first hot melt adhesive film layer 13, the foam honeycomb core being fitted and connected
14th, the second hot melt adhesive film layer 15, the second nonwoven layer 16 and the second fiber reinforced thermolplastic panel 17, foam honeycomb core 14 by
Honeycomb core 141 and the foam composition being filled in the hole of honeycomb core.Wherein the first fiber reinforced thermolplastic panel 11 and second
The thickness of fiber reinforced thermolplastic panel 17 is 0.2mm-3mm, the first hot melt adhesive film layer 13 and the second hot melt adhesive film layer 15
Thickness is 0.05mm-0.3mm, and the thickness of honeycomb core is 3mm-30mm.
The first filled and process in honeycomb core of the invention, forms foam honeycomb core, strengthens toughness, the impact resistance of honeycomb core
Etc. mechanical performances；Then by the first nonwoven layer, the first hot melt adhesive film layer, foam honeycomb core, the second hot melt adhesive film layer and second
Nonwoven layer is placed in progress hot pressing fitting in the first mold, forms intermediate core, intermediate core then is placed in two fiber reinforcement heat
Between plasticity panel, and pass through the second mold and carry out hot pressing fitting, then carry out injection-molding edge；Fiber reinforced thermolplastic panel with
There is nonwoven layer, due to non-woven fabrics good toughness itself, so as to enhance the mechanicalness of whole knot component between foam honeycomb core
Energy；And bonded between fiber reinforced thermolplastic panel and foam honeycomb core by nonwoven layer, increase the bonding of the two
Area, injection-molding edge strengthen the stability of structural member, using the means of rapid heating and cooling during the second mould heat pressure, are consolidated in hot pressing
Rapid cooling afterwards so that glued stability higher so that the structural member is not susceptible to degumming layering, improves it and uses the longevity
Life.
Embodiment
In the present embodiment, the preparation method of the honeycomb sandwich structure part, includes the following steps：
S1, honeycomb core is chosen, honeycomb core has multiple holes, and the filled and process in the hole of honeycomb core forms foam honeycomb core.
In the present embodiment, the thickness of honeycomb core is 6mm.The material of honeycomb core is PC honeycomb cores, and filled PVC foam obtains foam bee
Nest core.
S2, the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the second hot melt adhesive film layer are chosen, and carried
For the first mold, by the first nonwoven layer, the second nonwoven layer and the first hot melt adhesive film layer, the second hot melt adhesive film layer and foam bee
Nest core cuts into identical size, to ensure that the structural member circumference made is neat, the first hot melt adhesive film layer and the second hot melt adhesive film layer
It is the TPU hot melt adhesive film layers of 0.05mm, the first nonwoven layer and the second nonwoven layer are PET nonwoven layers, and specification is
30g/m2；Then the first mold is heated to 120 DEG C of the melting temperature more than the first hot melt adhesive film layer and the second hot melt adhesive film layer, according to
It is secondary to be placed in 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
In first mold, arrange to each layer of alignment, mold hot pressing, the pressure of the first mold of adjustment for 0.5MPa, heat-insulation pressure keeping 60s,
Cause 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 pressing
With reference to obtaining intermediate core after demoulding.
S3, it chooses fiber reinforced thermolplastic panel and the second mold is provided, fiber reinforced thermolplastic panel is TPU and glass
The thermoplastic panel of fiber composite, i.e., using glass fiber reinforcement TPU panels, the volume content of fiber is 45%, and thickness is
Intermediate core is placed between identical two panels fiber reinforced thermolplastic panel, is placed in 170 DEG C by 0.5mm, the second mold of heating
In second mold, molding, the pressure of the second mold of adjustment is 1.5MPa, heat-insulation pressure keeping 30s so that fiber reinforced thermolplastic panel
Together with intermediate core hot binding, demoulded after being cooled down rapidly in 30s, obtain cellular sandwich intermediate plate.Fibre-reinforced thermoplastic
Property panel by resin matrix and enhancing phase composition, variety classes fiber reinforced thermolplastic panel forming temperature is different, such as selects
Resin matrix, glass fiber reinforcement are different from the panel forming temperature that fibre reinforced is formed.
S31, the overlap for removing cellular sandwich intermediate plate circumference to make its surface smooth, are more convenient injection.
S4, cellular sandwich intermediate plate is embedded in injection mold, weight content is used to be pressed from both sides for 20% glass TPU to honeycomb
Core intermediate plate is molded, injection pressure 500N, and injection temperature is 190 DEG C, and the temperature of injection mold is 80 DEG C, injection time
For 4s.Bound edge is formed in the circumference of cellular sandwich intermediate plate, obtains honeycomb sandwich structure part.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of preparation method of honeycomb sandwich structure part, which is characterized in that include the following steps：
S1, honeycomb core is chosen, the filled and process in the hole of the honeycomb core forms foam honeycomb core；
S2, the first nonwoven layer, the second nonwoven layer, the first hot melt adhesive film layer, the second hot melt adhesive film layer are chosen, and provides first
Then mold heats the first mold to 1 DEG C -100 DEG C of the melting temperature more than the first hot melt adhesive film layer and the second hot melt adhesive film layer,
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 non-woven fabrics stratification
In the first mold, molding, the pressure of the first mold of adjustment is 0.1MPa-1MPa, heat-insulation pressure keeping 3s-120s so that the first nothing
Woven fabric 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, demoulding
After obtain intermediate core；
S3, it chooses fiber reinforced thermolplastic panel and the second mold is provided, the second mold of heating to fiber reinforced thermolplastic panel
Forming temperature, between the intermediate core is placed in two panels fiber reinforced thermolplastic panel, be placed in second mold, close
Mould, adjustment the second mold pressure be 0.2MPa-5MPa, heat-insulation pressure keeping 15s-150s so that fiber reinforced thermolplastic panel with
Intermediate core hot binding together, demoulds after being cooled down rapidly in 30s-90s, obtains cellular sandwich intermediate plate；
S4, cellular sandwich intermediate plate is embedded in injection mold, cellular sandwich intermediate plate is molded, in the cellular sandwich
The circumference of intermediate plate forms bound edge, obtains honeycomb sandwich structure part.
2. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：The step S3 and step
Between S4, also with step S31：Remove the overlap of the cellular sandwich intermediate plate circumference.
3. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：Honeycomb in the step S1
Core is PE honeycomb cores, PP honeycomb cores, PVC honeycomb cores, PC honeycomb cores, PET honeycomb cores, paper honeycomb core, Nomex honeycomb cores and aluminium
Honeycomb core one kind therein, thickness 3mm-30mm.
4. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：Foam in the step S1
For PVC foams, PS foams, PU foams, PUR foam, PEI foams, PI foams, PMI foams, PPSU foams and SAN foams its
One or more of combination, the density of the foam is 40-200kg/m3。
5. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：First in the step S2
Nonwoven layer is selected from one kind in polypropylene fibre, terylene, polyamide fibre, acrylic fibers, polyethylene, polyvinyl chloride fibre with the second nonwoven layer, and a square grammes per square metre is
10g/m2-100g/m2。
6. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：First in the step S2
Hot melt adhesive film layer and the second hot melt adhesive film layer choosing hot melt adhesive film layer of the same race, and be selected from PO hot melt adhesive films, TPU hot melt adhesive films,
PA hot melt adhesive films, EVA hot-melt adhesive film and retardation PES hot melt adhesive film one kind therein, thickness 0.05mm-0.3mm.
7. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：Fiber in the step S3
Enhance the thickness of thermoplastic panel as 0.2mm-3mm, the volume content of fiber is 35%-65%, the fiber reinforced thermolplastic
Panel by resin matrix with enhancing phase composition, the resin matrix for HDPE, LDPE, PP, PC, PC/ABS alloy, TPU, PA6,
One kind in PA66, PA11, PA12, PPS, PEK, PEEK, PI, PEI, PMMA, PLA, POM, PET and PBT, the reinforced phase are
Continuous glass fibre, carbon fiber, aramid fiber, basalt fibre, pbo fiber, UHMWPE fibers, PET fiber, aluminium oxide are fine
It is one or more in the mixing cloth of dimension, silicon carbide fibre woven cloth, unidirectional cloth, woven cloth and unidirectional cloth.
8. the preparation method of honeycomb sandwich structure part according to claim 1, it is characterised in that：It is molded in the step S4
It is glass fibre or carbon fibre reinforced plastic with plastics, the weight content of fiber is 5%-65%, and the glass fibre or carbon are fine
Tie up reinforced plastics in plastic substrate for HDPE, LDPE, PP, PC, PC/ABS alloy, TPU, PA6, PA66, PA11, PA12,
One kind in PPS, PEK, PEEK, PI, PEI, PMMA, PLA, POM, PET and PBT.
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