CN105522787B - A kind of foam metal sandwich and preparation method thereof, battenboard - Google Patents
A kind of foam metal sandwich and preparation method thereof, battenboard Download PDFInfo
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- CN105522787B CN105522787B CN201410647777.7A CN201410647777A CN105522787B CN 105522787 B CN105522787 B CN 105522787B CN 201410647777 A CN201410647777 A CN 201410647777A CN 105522787 B CN105522787 B CN 105522787B
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Abstract
The problem of to overcome foam metal sandwich low intensity in the prior art, the invention provides a kind of foam metal sandwich, including foam metal and sandwich fibre cloth；The sandwich fibre cloth extending sideways to the lower surface of foam metal by foam metal from the upper surface of the foam metal, the foam metal is wrapped up；Silica gel is filled with the hole of the foam metal.Meanwhile, the invention also discloses the preparation method of above-mentioned foam metal sandwich and using the battenboard of the foam metal sandwich.The foam metal sandwich intensity that the present invention is provided is high.
Description
Technical field
The present invention relates to a kind of foam metal sandwich and preparation method thereof, and using the sandwich of the foam metal sandwich
Plate.
Background technology
Foam metal material has the advantages that lightweight, effective energy-absorbing, is often applied to Aero-Space, vapour as energy absorbing component
The fields such as car, naval vessel, but because its intensity is not high, application is greatly limited.
To make foam metal material be utilized effectively, in the prior art by being set in foam metal material upper and lower surface
Relatively thin composite or metallic plate, forms the sandwich structure battenboard using foam metal as sandwich.This sandwich knot
The battenboard of structure not only has the characteristics of quality is small, energy absorbing efficiency is high, and with higher specific stiffness, is giving full play to foam
While the advantages of metal sandwich itself lightweight, effective energy-absorbing, intensity is improved, is with a wide range of applications.
However, due to the foam metal sandwich low intensity of itself used in above-mentioned battenboard, limiting with the foam
The further raising of the battenboard intensity of metal sandwich.
The content of the invention
The problem of technical problems to be solved by the invention are for foam metal sandwich low intensity in the prior art there is provided
A kind of foam metal sandwich.
The technical scheme that present invention solution above-mentioned technical problem is used is as follows：
A kind of foam metal sandwich, including foam metal and sandwich fibre cloth are provided；The sandwich fibre cloth is from the bubble
The upper surface of foam metal is extended sideways to the lower surface of foam metal by foam metal, and the foam metal is wrapped up；Institute
State and silica gel is filled with the hole of foam metal.
Meanwhile, present invention also offers the preparation method of above-mentioned foam metal sandwich, comprise the following steps：
S1, using sandwich fibre cloth wrap up foam metal, make sandwich fibre cloth two ends be covered each by the foam gold
The upper and lower surface of category, the middle part of sandwich fibre cloth at least covers a side of foam metal；
S2, the foam metal for wrapping up sandwich fibre cloth are immersed in liquid-state silicon gel；
S3, the liquid-state silicon gel that internal submergence has foam metal is subjected to vacuum defoamation, then solidifies liquid-state silicon gel.
In addition, present invention also offers a kind of battenboard, including two composite boards and between two composite boards
Foregoing foam metal sandwich；The composite board includes two metallic plates and two between two metallic plates
Outer layer fiber cloth.
The foam metal sandwich that the present invention is provided wraps up in system, and the hole of foam metal sandwich using fiber cloth by ad hoc fashion
Interior use silicone filler solidification.Make it have more excellent intensity and shock resistance, can be used as building material, motor vehicles
High rigidity structural member.
Brief description of the drawings
Fig. 1 is the schematic perspective view for the foam metal sandwich that the embodiment of the present invention 1 is provided；
Fig. 2 is the schematic perspective view for the foam metal sandwich that the embodiment of the present invention 2 is provided；
Fig. 3 is the explosive view for the battenboard that the present invention is provided.
Reference in Figure of description is as follows：
1st, foam metal sandwich；11st, foamed aluminium；12nd, sandwich fibre cloth；2nd, metallic plate；3rd, outer layer fiber cloth.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The foam metal sandwich that the present invention is provided includes foam metal and sandwich fibre cloth；The sandwich fibre cloth is from described
The upper surface of foam metal is extended sideways to the lower surface of foam metal by foam metal, and the foam metal is wrapped up；
Silica gel is filled with the hole of the foam metal.
In the present invention, above-mentioned foam metal can use various foam metals commonly used in the art, such as described foam gold
Belong to one kind in foamed aluminium, nickel foam or foam copper.The specific species of foam metal is not limited in the present invention.
As known to those skilled in the art, foam metal be by metallic matrix skeleton continuous phase and stomata dispersed phase or
The two-phase composite material of continuous phase composition, its inner dispersion has substantial amounts of hole.In the foam metal sandwich that the present invention is provided, foam
Silica gel is filled with the hole of metal.
Meanwhile, the foam metal sandwich that the present invention is provided also includes sandwich fibre cloth.The pole piece fiber used in the present invention
Cloth can be various fiber cloths commonly used in the art, for example, the sandwich fibre cloth is glass fibre or carbon fiber.
According to the present invention, specifically, sandwich fibre cloth is covered on foam metal, the sandwich fibre cloth is from the foam
The upper surface of metal extends sideways to the lower surface of foam metal by foam metal.Sandwich fibre cloth is substantially in "] " type is same
When be covered on the upper surface of foam metal, side and lower surface, foam metal is wrapped up.
The filling gel in hole, and after being wrapped up in the manner described above by sandwich fibre cloth, it is greatly improved foam
The intensity of metal sandwich.
According to the present invention, in above-mentioned foam metal sandwich, it can only include a foam metal, may also comprise multiple foams
Metal.When only including a foam metal, sandwich fibre cloth can be with "] " type mode wrapped up foam metal.
When including multiple foam metals, to provide under higher intensity, preferable case, the foam metal sandwich includes
Multiple foam metals；The multiple foam metal is stacked gradually；The sandwich fibre cloth is arranged in the multiple along " bow " font
Between foam metal and the multiple foam metal surface is fitted in, two adjacent foam metals are separated；And the folder
The two ends of core fibre cloth are covered each by the lower surface in the upper surface of the foam metal of the superiors and undermost foam metal.
Now, it is in laminated arrangement between multiple foam metals.Sandwich fibre cloth is covered in first block of foam gold of the top
Belong to upper surface, and extend from first piece of foam metal upper surface towards side, the first of first block of foam metal is fitted in after bending
Extend downward into the lower surface of first block of foam metal (such as on the left of) and along this sideways sideways, fitted in simultaneously after bending again
First piece of foam metal lower surface and second piece of foam metal upper surface, and steeped along first piece of foam metal following table towards first piece
The side (such as right side) relative with first side of foam metal extends to second side (such as right flank) place, and is bent downwardly
The second side (such as right flank) of second block of foam metal is fitted in afterwards, and extends downward into along this second block of foam gold sideways
The lower surface of category, second piece of foam metal lower surface and the 3rd piece of foam metal upper surface are fitted in after bending again simultaneously, and
Along second piece of foam metal following table towards opposite side (such as left side) extension of second block of foam metal.By that analogy, until folder
Core fibre cloth is fitted on the lower surface of the foam metal of bottom.Now, sandwich fibre cloth is arranged in described in " bow " font
Between multiple foam metals and fit in the multiple foam metal surface.In multiple foam metal the same sides, two adjacent
In foam metal, the side of only one foam metal is fitted with sandwich fibre cloth, i.e., in the same side, sandwich fibre cloth interval patch
Together in multiple foam metals side.And for same foam metal, in two relative side, only one side with
Sandwich fibre cloth is fitted.
In the present invention, the thickness of the foam metal sandwich can change interior in a big way, specifically can be according to suitable application area
Adjust accordingly and select, under preferable case, the thickness of the foam metal sandwich is 5-15mm.
Meanwhile, present invention also offers the preparation method of above-mentioned foam metal sandwich, comprise the following steps：
S1, using sandwich fibre cloth wrap up foam metal, make sandwich fibre cloth two ends be covered each by the foam gold
The upper and lower surface of category, the middle part of sandwich fibre cloth at least covers a side of foam metal；
S2, the foam metal for wrapping up sandwich fibre cloth are immersed in liquid-state silicon gel；
S3, the liquid-state silicon gel that internal submergence has foam metal is subjected to vacuum defoamation, then solidifies liquid-state silicon gel.
According to the present invention, as it was previously stated, preparing the sandwich fibre cloth and foam metal used during above-mentioned foam metal sandwich
Sandwich fibre cloth and foam metal commonly used in the art can be used, such as described sandwich fibre cloth is glass fibre or carbon fiber；
The one kind of the foam metal in foamed aluminium, nickel foam or foam copper.
As described in step S1, need to wrap up foam metal using sandwich fibre cloth first, distinguish the two ends of sandwich fibre cloth
The upper and lower surface of the foam metal is covered in, the middle part of sandwich fibre cloth at least covers a side of foam metal
Face.
As it was noted above, above-mentioned foam metal number can be one or more, when foam metal only has one, use
Sandwich fibre cloth wraps up the foam metal, the two ends of sandwich fibre cloth is covered each by the upper surface of the foam metal with
It is covered in the middle part of surface, sandwich fibre cloth on the side of the foam metal.That is, now sandwich fibre cloth is in "] " type, sandwich
The two ends of fiber cloth are covered each by, in the upper and lower surface of the foam metal, bubble being fitted in the middle part of sandwich fibre cloth
On one side of foam metal.
When foam metal has it is multiple when, multiple foam metals can be regarded by said one foam metal similar mode
For an entirety, above-mentioned multiple foam metals are wrapped up jointly using sandwich fibre cloth, now sandwich fibre cloth is in "] " type, folder
Core fibre cloth is fitted on the side of the same side of multiple foam metals.In the present invention, to provide higher intensity, preferable case
Under, the two ends of sandwich fibre cloth are covered each by the upper and lower surface of the foam metal, and sandwich fibre cloth
Portion covers a side and the upper and lower surface of foam metal simultaneously.Specifically, the multiple foam metal is stacked gradually, and
The sandwich fibre cloth is arranged between the multiple foam metal along " bow " font and fits in the multiple foam metal table
Face, two adjacent foam metals are separated；And the two ends of the sandwich fibre cloth are covered each by the foam gold in the superiors
The upper surface of category and the lower surface of undermost foam metal.As it was previously stated, now, multiple foam metal the same sides, two
In adjacent foam metal, the side of only one foam metal is fitted with sandwich fibre cloth, i.e., in the same side, sandwich fibre cloth
Interval fits in multiple foam metal sides.And for same foam metal, in two relative side, only one
Fitted with sandwich fibre cloth side.
In the present invention, under preferable case, in the step S1, first the sandwich fibre cloth is carried out using epoxy resin pre-
Leaching is handled, then using sandwich fibre cloth parcel foam metal.
According to the present invention, wrapped up using sandwich fibre cloth after foam metal, need in the hole of foam metal filling gel.Tool
Body such as step S2, the foam metal that sandwich fibre cloth is wrapped up is immersed in liquid-state silicon gel.It should be understood that during concrete operations,
Liquid-state silicon gel can be irrigated in a casing, the foam metal for then wrapping up sandwich fibre cloth is placed in liquid-state silicon gel, makes liquid
The liquid level of silica gel is higher than the top of foam metal；Or, the foam metal that sandwich fibre cloth is wrapped up can be placed in a casing,
Then liquid-state silicon gel is irrigated into casing, until flooding the top of foam metal.
Cause bubble to avoid in follow-up vacuum defoamation liquid-state silicon gel liquid level from dropping under the top of foam metal
In foam metal segment region can not effective filling gel, under preferable case, in the step S2, the liquid level of liquid-state silicon gel is higher by
The distance of the foam metal upper surface is 0.5 times of foam metal thickness.
Meanwhile, to avoid under excessively waste of materials, preferable case, when foam metal is placed in casing, make foam metal
Length and width face be close to bottom half, beneficial to reducing mach feed consumption in subsequent technique.
In the present invention, such as step S3 also needs the liquid-state silicon gel that internal submergence has foam metal carrying out vacuum defoamation, with except
The bubble gone inside silica gel.The method of vacuum defoamation can be using conventional method, for example can be under 50-100KPa pressure
Carry out vacuum defoamation.
After vacuum defoamation is handled, liquid-state silicon gel need to be solidified.Do not have in the present invention to the method that liquid-state silicon gel solidifies
It is specifically limited, only need liquid-state silicon gel can be solidified, such as in described step S3, be by the method that liquid-state silicon gel solidifies：
Solidify 2-3h at 30-40 DEG C.
, according to the invention it is preferred in the case of, in the step S3, after vacuum defoamation, 5-15min is first kept, is then let out
Normal pressure is depressed into, then liquid-state silicon gel is solidified.
Generally, after above-mentioned processing solidifies liquid silica gel, the part beyond foam metal can be deposited after hardening
Silica gel, therefore, according to the present invention, after the step S3, in addition to removes the silica gel beyond the foam metal.
In addition, a kind of particular use of the foam metal sandwich provided as the present invention, present invention also offers one kind folder
Core plate, including two composite boards and the foregoing foam metal sandwich between two composite boards；It is described compound
Sheet material includes two metallic plates and two outer layer fiber cloth between two metallic plates.
Specifically, the battenboard general configuration is similar with existing Sandwich structure, difference is that foam metal sandwich is
The foam metal sandwich that the present invention is provided.As shown in figure 3, the battenboard that the present invention is provided includes two composite boards and a sheet
The foam metal sandwich 1 (for example implementing the 2 foam metal sandwiches prepared) provided is provided.The foam metal sandwich 1 includes 2
The foamed aluminium 11 and sandwich fibre cloth 12 of individual stacking.Silica gel (not shown) is filled with the hole of foamed aluminium 11.Sandwich fibre
Cloth 12 is arranged between 2 foamed aluminiums 11 along " bow " font and fits in 2 surfaces of foamed aluminium 11, by two foamed aluminiums 11 every
The two ends for opening and sandwich fibre cloth 12 are covered each by upper surface and the undermost foamed aluminium 11 of foamed aluminium 11 in the superiors
Lower surface.
Foam metal sandwich position 1 is between two composite boards.It is located at two above and below foam metal sandwich 1 respectively
Individual plywood sheet structure is identical.Specifically, the composite board includes two metallic plates 2 and two outer layer fiber cloth 3.Two outer layers
Fiber cloth 3 is located between two metallic plates 2.
For two outer layer fiber cloth 3, under preferable case, in one of outer layer fiber cloth 3 orientation of fiber with
The orientation of fiber is vertical in another outer layer fiber cloth 3.
As it is known in the art, above-mentioned outer layer fiber cloth can use various fiber cloths commonly used in the art, such as institute
It can be glass fibre or carbon fiber to state outer layer fiber cloth.
The present invention is further detailed by the following examples.
Embodiment 1
The present embodiment is used to illustrate foam metal sandwich disclosed by the invention and preparation method thereof.
Offer size is 63.5mm × 12.7mm × 12mm foamed aluminium.Wrapped up in using sandwich fibre cloth to foamed aluminium, sandwich
Foamed aluminium is wrapped up in system, overall dimensions by fiber cloth such as "] " type：63.5mm×12.7mm×12.7mm.
By sandwich fibre cloth wrap up in foamed aluminium be fixed on casing bottom, and pouring liquid silica gel.The liquid level of liquid-state silicon gel
The distance for being higher by foamed aluminium upper surface is 0.5 times of foamed aluminium thickness.
By it is internal with sandwich fibre cloth wrap up in foamed aluminium and the casing of liquid-state silicon gel be positioned in vacuum drying chamber,
Vacuum defoamation is carried out under 90KPa pressure, until bubble-free is emerged.Then 12min, then pressure release are kept to normal pressure, then at 32 DEG C
Lower solidification 3h, solidifies liquid-state silicon gel.
Finally foamed aluminium is taken out, unnecessary silica gel is removed, the bubble that size is 63.5mm × 12.7mm × 12.7mm is obtained
Foam metal sandwich.
Its concrete structure is referring to Fig. 1.Sandwich fibre cloth 12 substantially be in "] " type simultaneously be covered in foamed aluminium 11 upper surface,
On side and lower surface, foamed aluminium 11 is wrapped up.
Using nick break test machine according to ATSM D-256, test above-mentioned under conditions of pendulum specification is 75Kg-cm
The impact strength of foam metal sandwich.Wherein, batten is size：63.5mm × 12.7mm, breach residue width：10.16mm, always
Width：12.7mm.
The impact strength for obtaining the foam metal sandwich is 3.92J/cm2。
Embodiment 2
The present embodiment is used to illustrate foam metal sandwich disclosed by the invention and preparation method thereof.
Foamed aluminium is divided into two pieces, per block size：63.5mm×12.7mm×6mm.Wrapped up in using sandwich fibre cloth to bubble
Foamed aluminium is wrapped up in system, overall dimensions by foam aluminium, sandwich fibre cloth such as " bow " font：63.5mm×12.7mm×12.7mm.
By sandwich fibre cloth wrap up in foamed aluminium be fixed on casing bottom, and pouring liquid silica gel.The liquid level of liquid-state silicon gel
The distance for being higher by foamed aluminium upper surface is 0.5 times of foamed aluminium thickness.
By it is internal with sandwich fibre cloth wrap up in foamed aluminium and the casing of liquid-state silicon gel be positioned in vacuum drying chamber,
Vacuum defoamation is carried out under 60KPa pressure, until bubble-free is emerged.Then 8min, then pressure release are kept to normal pressure, then at 38 DEG C
Solidify 2h, solidify liquid-state silicon gel.
Finally foamed aluminium is taken out, unnecessary silica gel is removed, the bubble that size is 63.5mm × 12.7mm × 12.7mm is obtained
Foam metal sandwich.
Its concrete structure is referring to Fig. 2.The foam metal sandwich 1 includes the foamed aluminium 11 and sandwich fibre cloth 12 of 2 stackings.
Silica gel (not shown) is filled with the hole of foamed aluminium 11.Sandwich fibre cloth 12 is arranged in 2 foamed aluminiums 11 along " bow " font
Between and fit in 2 surfaces of foamed aluminium 11, the two ends that two foamed aluminiums 11 are separated into and sandwich fibre cloth 12 are covered each by
In the upper surface of the foamed aluminium 11 of the superiors and the lower surface of undermost foamed aluminium 11.
Using nick break test machine according to ATSM D-256, test above-mentioned under conditions of pendulum specification is 75Kg-cm
The impact strength of foam metal sandwich.Wherein, batten is size：63.5mm × 12.7mm, breach residue width：10.16mm, always
Width：12.7mm.
The impact strength for obtaining the foam metal sandwich is 5.72J/cm2。
Comparative example 1
This comparative example is used for comparative illustration foam metal sandwich disclosed by the invention and preparation method thereof.
Offer size is 63.5mm × 12.7mm × 12.7mm foamed aluminium.
Using nick break test machine according to ATSM D-256, test above-mentioned under conditions of pendulum specification is 75Kg-cm
The impact strength of foamed aluminium.Wherein, batten is size：63.5mm × 12.7mm, breach residue width：10.16mm, overall width：
12.7mm。
The impact strength for obtaining the foamed aluminium is 1.43J/cm2。
The test result for contrasting above-described embodiment and comparative example understands that the intensity for the foam metal sandwich that the present invention is provided is obtained
To being obviously improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (12)
1. a kind of foam metal sandwich, it is characterised in that including foam metal and sandwich fibre cloth；The sandwich fibre cloth is from institute
Upper surface the extending sideways to the lower surface of foam metal by foam metal of foam metal is stated, by the foam metal bag
Wrap up in；Silica gel is filled with the hole of the foam metal；
The foam metal sandwich includes multiple foam metals；The multiple foam metal is stacked gradually；The sandwich fibre cloth
It is arranged between the multiple foam metal along " bow " font and fits in the multiple foam metal surface, by adjacent two
Foam metal is separated；And the two ends of the sandwich fibre cloth are covered each by the upper surface of the foam metal of the superiors and most lower
The lower surface of the foam metal of layer.
2. foam metal sandwich according to claim 1, it is characterised in that the thickness of the foam metal sandwich is 5-
15mm。
3. foam metal sandwich according to claim 1, it is characterised in that the sandwich fibre cloth is glass fibre or carbon
Fiber.
4. foam metal sandwich according to claim 1, it is characterised in that the foam metal is selected from foamed aluminium, foam
One kind in nickel or foam copper.
5. the preparation method of foam metal sandwich as claimed in claim 1, it is characterised in that comprise the following steps：S1, use
Sandwich fibre cloth wraps up foam metal, the two ends of sandwich fibre cloth is covered each by the upper surface of the foam metal and following table
Face, the middle part of sandwich fibre cloth at least covers a side of foam metal；Multiple foam metals are provided；Using sandwich fibre cloth
The multiple foam metal is wrapped up, the multiple foam metal is stacked gradually, and sandwich fibre cloth edge " bow " font
Be arranged between the multiple foam metal and fit in the multiple foam metal surface, by two adjacent foam metals every
Open；And the two ends of the sandwich fibre cloth laminating are covered each by the upper surface of the foam metal of the superiors and undermost bubble
The lower surface of foam metal；S2, the foam metal for wrapping up sandwich fibre cloth are immersed in liquid-state silicon gel；S3, by inside submergence have
The liquid-state silicon gel of foam metal carries out vacuum defoamation, then solidifies liquid-state silicon gel.
6. preparation method according to claim 5, it is characterised in that in the step S1, first using epoxy resin to institute
State sandwich fibre cloth and carry out pre-preg, then using sandwich fibre cloth parcel foam metal.
7. preparation method according to claim 5, it is characterised in that in the step S2, the liquid level of liquid-state silicon gel is higher by
The distance of the foam metal upper surface is 0.5 times of foam metal thickness.
8. preparation method according to claim 5, it is characterised in that in the step S3, the side that liquid-state silicon gel is solidified
Method is：Solidify 2-3h at 30-40 DEG C.
9. preparation method according to claim 8, it is characterised in that in the step S3, under 50-100KPa pressure
Carry out vacuum defoamation；After vacuum defoamation, 5-15min is first kept, then pressure release solidifies to normal pressure, then by liquid-state silicon gel.
10. the preparation method according to claim 5 or 9, it is characterised in that after the step S3, in addition to remove
Silica gel beyond the foam metal.
11. preparation method according to claim 5, it is characterised in that the sandwich fibre cloth is that glass fibre or carbon are fine
Dimension；The one kind of the foam metal in foamed aluminium, nickel foam or foam copper.
12. a kind of battenboard, it is characterised in that including two composite boards and between two composite boards as right will
Seek the foam metal sandwich described in any one in 1-4；The composite board includes two metallic plates and positioned at two metallic plates
Between two outer layer fiber cloth.
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| CN201410647777.7A CN105522787B (en) | 2014-11-14 | 2014-11-14 | A kind of foam metal sandwich and preparation method thereof, battenboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410647777.7A CN105522787B (en) | 2014-11-14 | 2014-11-14 | A kind of foam metal sandwich and preparation method thereof, battenboard |
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| CN105522787B true CN105522787B (en) | 2017-07-21 |
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