CN106515098B - A kind of lightweight large scale hollow composite material and preparation method thereof - Google Patents
A kind of lightweight large scale hollow composite material and preparation method thereof Download PDFInfo
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- CN106515098B CN106515098B CN201610968587.4A CN201610968587A CN106515098B CN 106515098 B CN106515098 B CN 106515098B CN 201610968587 A CN201610968587 A CN 201610968587A CN 106515098 B CN106515098 B CN 106515098B
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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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
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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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
- B32B2260/023—Two or more layers
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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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/14—Mixture of at least two fibres made of different materials
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Abstract
The invention discloses a kind of lightweight large scale hollow composite material and preparation method thereof, lightweight large scale hollow composite material, including the first hollow fabric and the second hollow fabric；When preparation, each fabric is overlapped into laying in order, and hollow fabric is infiltrated and solidified with resin, both.The present invention uses the hollow fabric composite material overlapping mode of special construction design, and fiber is continuous through, and ensure that large-sized composite material in the mechanical property of lap-joint；The presence of overlap joint surface layer structure can preferably realize hollow fabric overlap joint limit, guarantee the precision and consistency of overlap joint size；Without carrying out surface layer reinforcement to composite material lap-joint, conducive to the lightweight of hollow composite material；Overlap joint design can prepare the unrestricted large scale hollow composite material of breadth, and internal cavities are completely continuous；It is not necessarily to secondary operation or other post-processings after the completion of product is compound, ensures product quality stability and production efficiency；It is greatly enlarged the application field of hollow composite material；The invention preparation process is easy to operate, to equipment complex without particular/special requirement, can be continuously produced, and high production efficiency is at low cost, is suitable for mass production.
Description
Technical field
The invention belongs to field of compound material, and in particular to a kind of lightweight large scale hollow composite material and its preparation side
Method.
Background technique
Hollow composite material is a kind of novel interlayer composite material, constitute sandwich basis be the warp thread on surface layer,
Weft yarn and two surface layers of connection and the Z-direction fiber for forming core.Hollow fabric directly forms three-dimensional whole multiple after resin compounded
Condensation material sandwich, for cellular material and foamed material, hollow composite material, which has, to be not easy to be layered, can design
Property strong, fillable, pre-buried advantage and good heat preservation, heat-insulated, soundproof effect, have been widely used for track friendship at present
The fields such as logical, vehicle mounted square cabin and building materials.There is inside hollow composite material continuous cavity, can be used as structure sheaf be widely used in it is double
The preparation of wall storage tank can realize the monitoring for seeping leakage by its internal cavities.However hollow fabric due to width limit, at present only
Breadth≤1.8m hollow fabric can be prepared, significantly limits hollow fabric in the application in large scale field.
Patent at present about hollow fabric and its composite technology exploitation is less, and about the hollow composite wood of large scale
Expect that the report of preparation is less.Patent CN101480829B is a kind of preparation method of hollow fabric sheets, passes through board mold above
Limit prepares the good hollow composite material of high stability, but it is hollow compound to use the program that can not prepare lightweight large scale merely
Material.Hollow multiple material mechanical connection or second bonding are the approach for solving hollow multiple material large scale application, but mechanical connection will be led
It causes joint stress to concentrate, reduces the intensity of joint composite material, and it is solid in hollow multiple material junction to be mechanically connected needs
Processing, cumbersome, low efficiency are at high cost；Second bonding mode discontinuously causes composite material to connect due to surface layer fiber
Place's intensity is difficult to ensure, while being unfavorable for composite continuous chemical conversion type and cost effective realization.
Patent CN103692664A discloses a kind of joining method of hollow composite material connector, and the invention is by hollow fabric
Edge cuts neat rear splicing, the bonding strength of hollow composite material is realized by surface layer reinforcement, the program can prepare big ruler
Very little hollow composite material, hollow composite material is completely continuous in joint internal cavities, however program bonding strength is poor, face
The introducing of layer supporting material will lead to composite material weight gain, while the seamless cutting of fabric is also difficult to realize mass production.If adopting
With solid glass steel lap joint process, the thickness of hollow composite material undoubtedly will lead to by way of by fabric joint overlap processing
It is uneven, it is often more important that, the cavity that the two all not can guarantee joint composite inner is continuous.
A kind of lightweight large scale hollow composite material is developed thus, is solved hollow composite material in the prior art and is connected
Intensity difference, supporting material introducing lead to weight gain problem, hollow fabric splicing/lap gap control difficulty greatly and are difficult to batch metaplasia
The problems such as production, is particularly important.
Summary of the invention
The object of the present invention is to provide a kind of lightweight large scale hollow composite materials and preparation method thereof, solve existing skill
Hollow composite material bonding strength is poor in art, supporting material introduces leads to weight gain problem, hollow fabric splicing/lap gap control
Difficulty is big and the problem of being difficult to mass production.
A kind of lightweight large scale hollow composite material, including the first hollow fabric and the second hollow fabric；First is hollow
Fabric includes the first suede through layer and is respectively provided at first upper layer and first cutting optimal of first suede through layer upper and lower surface, in first
First suede of one end holds setting, the first hollow fabric through layer, the first upper layer and the first cutting optimal together on empty fabric length direction
The first suede of the other end holds the length of setting, the first cutting optimal then to exceed the first suede together through layer and the first upper layer on length direction
The first overlap joint surface layer is formed through layer and the first upper layer；Second hollow fabric includes the second suede through layer and is respectively provided at the second suede warp
The second upper layer and the second cutting optimal of layer upper and lower surface, second suede of one end is through layer, the on the second hollow fabric length direction
Two upper layers and the second cutting optimal hold setting together, and the second suede of the other end is through under layer and second on the second hollow fabric length direction
Surface layer holds setting together, the length of the second upper layer then exceeds the second suede and forms the second overlap joint surface layer through layer and the second cutting optimal；Benefit
The first hollow fabric and the second hollow fabric are compounded in from length direction splicing with the first overlap joint surface layer and the second overlap joint surface layer
Together, wherein the first overlap joint surface layer is compounded on the second cutting optimal, the second overlap joint surface layer is compounded on the first upper layer, the first suede
It fits closely and is combined with each other through layer through layer and the second suede.
The application efficiently solves that hollow composite material bonding strength in the prior art is poor, supporting material introducing causes to increase weight
The problem of problem, hollow fabric splicing/lap gap control difficulty greatly and are difficult to mass production.
Each hollow fabric of the application can not be wide or wide, and the width of each hollow fabric is both preferably 50mm-
6000mm。
In order to further realize the lightweight large scale hollow composite material of random length, lightweight large scale is hollow compound
Material further includes more than one third hollow fabric, and third hollow fabric includes third suede through layer and is respectively provided at third suede warp
The third upper layer and third cutting optimal of layer upper and lower surface, the third suede of one end is through layer and the on third hollow fabric length direction
Three upper layers hold setting together, the length of third cutting optimal then exceeds third suede and forms third faying surface through layer and third upper layer
Layer, the third suede of the other end holds setting, third upper layer through layer and third cutting optimal together on third hollow fabric length direction
Length then exceeds third suede and forms the 4th overlap joint surface layer through layer and third cutting optimal；
When third hollow fabric is one, using the second overlap joint surface layer and third overlap joint surface layer by the second hollow fabric and
Third hollow fabric is combined with each other from length direction splicing, wherein the second overlap joint surface layer is compounded on third upper layer, third
Overlap joint surface layer is compounded on the second cutting optimal, and the second suede is fitted closely through layer and is combined with each other through layer and third suede；Utilize first
First hollow fabric and third hollow fabric are combined with each other by overlap joint surface layer and the 4th overlap joint surface layer from length direction splicing,
In the first overlap joint surface layer be compounded on third cutting optimal, the 4th overlap joint surface layer is compounded on the first upper layer, the first suede through layer and
Third suede is fitted closely through layer to be combined with each other；
When third hollow fabric is more than two, then surface layer and the are overlapped first with the third of each third hollow fabric
Four overlap joint surface layers splice all third hollow fabrics from length direction to be combined with each other, and formation both ends are respectively equipped with third and take
The third elongated hollow fabric of junction layer and the 4th overlap joint surface layer；Then the first overlap joint surface layer and third elongated hollow is recycled to knit
Third elongated hollow fabric and the first hollow fabric are stitched together by the 4th overlap joint surface layer of object one end from length direction, wherein
First overlap joint surface layer is compounded on third cutting optimal, and the 4th overlap joint surface layer is compounded on the first upper layer, and the first suede is through layer and the
Three suedes are fitted closely through layer to be combined with each other；Utilize the third faying surface of the second overlap joint surface layer and third elongated hollow fabric one end
Third elongated hollow fabric and the second hollow fabric are stitched together by layer from length direction, wherein the second overlap joint surface layer is compounded in
On third upper layer, third overlap joint surface layer is compounded on the second cutting optimal, and the second suede fits closely through layer and third suede through layer multiple
It is combined.
In order to further ensure the uniformity of lightweight large scale hollow composite material, the first suede is through layer, the second suede through layer
And third suede is equal through thickness degree；First upper layer, the second upper layer and third upper layer thickness are equal；First cutting optimal,
Two cutting optimals and third cutting optimal thickness are equal.
In order to further ensure the uniformity and continuity of lightweight large scale hollow composite material, the first hollow fabric,
Second hollow fabric and third hollow fabric equal in width.
In order to guarantee the continuity of fabric, while material is saved, the first overlap joint surface layer is continuously weaved with the first hollow fabric
It is formed；Second overlap joint surface layer continuously weaves to be formed with the second hollow fabric；Third overlaps surface layer and the 4th overlap joint surface layer and third
Hollow fabric continuously weaves to be formed.One can be in glass fibre, carbon fiber, aramid fiber or quartz fibre of fiber used
Kind.According to the lint-free structure hollow fabric in hollow fabric size requirements preparation part, i.e., local suede is passed through according to overlap joint surface layer size
It is individually drawn from creel, is not involved in hollow fabric integral weaving, obtain the lint-free hollow fabric in part.
As the another technical solution of the application, the first overlap joint surface layer is cut by the first hollow fabric to be formed；Second takes
Junction layer is cut by the second hollow fabric and is formed；Third overlaps surface layer and the 4th overlap joint surface layer and cuts shape by third hollow fabric
At.
In order to guarantee the continuity of lightweight large scale hollow composite material and be able to satisfy general production requirement, first is taken
The width that junction layer, the second overlap joint surface layer, third overlap joint surface layer and the 4th overlap surface layer is 5mm~100mm；First hollow knits
Object, the second hollow fabric and third hollow fabric equal thickness, and be 3mm~50mm.
The application is complex as using resin infiltration and solidifies, and resin is epoxy resin, unsaturated-resin or phenolic resin.
The preparation method of above-mentioned lightweight large scale hollow composite material, first by the first hollow fabric and the second hollow fabric
It is seamless to overlap, then by middle infiltration and solidified with resin, both obtains lightweight large scale hollow composite material.Resin is to fibre
The impregnation process of dimension is formed using hand pasting forming or vacuum diversion.
The unmentioned technology of the present invention is referring to the prior art.
Beneficial effects of the present invention: compared with prior art, technical solution of the present invention is solved to exist in the prior art and be asked
It inscribes and lightweight large scale hollow composite material is successfully simultaneously prepared, the composite material of arbitrary dimension may be implemented, and adjacent take
Junction layer structure hollow fabric construction is unified, prepares without differentiation, is conducive to fabric and produces in enormous quantities；Hollow fabric overlaps surface layer
With hollow fabric surface layer integral weaving, fiber is continuous through, and ensure that large-sized composite material in the mechanical property of lap-joint；In
Hollow fabric overlap joint limit can preferably be realized by existing in empty fabric, guarantee the precision and consistency of overlap joint size；The present invention
Without carrying out surface layer reinforcement to composite material lap-joint, conducive to the lightweight of hollow composite material；It is passed through based on hollow fabric itself
To the continuity in direction, hollow composite material is through to size, without limitation, and hollow fabric maximum breadth≤1.8m at present is limited
, in the application of substantially wide-range, the present invention invented hollow fabric surface layer overlapping technology from fabric construction for it, is guaranteeing to take
Breadth and the unrestricted large scale hollow composite material of length can be prepared under conditions of intensity by connecing, and internal cavities connect completely
It is continuous, it is greatly enlarged the application field of hollow composite material；It is not necessarily to secondary operation or other post-processings after the completion of product is compound, protects
Stable product quality and production efficiency are demonstrate,proved；The invention preparation process is easy to operate, to equipment complex without particular/special requirement, can connect
Continuous metaplasia produces, and high production efficiency is at low cost, is suitable for mass production.
Detailed description of the invention
Fig. 1 is 3D hollow fabric institutional framework schematic diagram in the prior art；
Fig. 2 is the first hollow fabric schematic diagram of the invention；
Fig. 3 is third hollow fabric schematic diagram of the present invention；
Fig. 4 is the second hollow fabric schematic diagram of the invention；
Fig. 5 is lightweight large scale hollow composite material schematic diagram of the present invention；
In figure: 1- warp yarns；2- velvet warp yarn line；3- weft yarn；The first suede of 4- is through layer；The first upper layer of 5-；6-
One cutting optimal；7- first overlaps surface layer；8- third suede is through layer；9- third upper layer；10- third cutting optimal；11- third faying surface
Layer；12- the 4th overlaps surface layer；The second suede of 13- is through layer；The second upper layer of 14-；The second cutting optimal of 15-；16- second overlaps surface layer；
17- hollow fabric surface layer overlapping regions；The first hollow fabric of 18-；The second hollow fabric of 19-；20- third hollow fabric.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
In embodiment, the first hollow fabric, the second hollow fabric and third hollow fabric are by alkali-free glass in each embodiment
Glass fiber integral weaving forms.
Embodiment 1
As shown, lightweight large scale hollow composite material, including the first hollow fabric and the second hollow fabric；First
Hollow fabric includes the first suede through layer and is respectively provided at first upper layer and first cutting optimal of first suede through layer upper and lower surface, the
First suede of one end holds setting through layer, the first upper layer and the first cutting optimal together on one hollow fabric length direction, and first is hollow
The first suede of the other end through layer and the first upper layer holds setting together on fabric length direction, the length of the first cutting optimal then exceeds
One suede forms the first overlap joint surface layer through layer and the first upper layer；Second hollow fabric includes the second suede through layer and is respectively provided at second
Second upper layer and second cutting optimal of the suede through layer upper and lower surface, the second suede warp of one end on the second hollow fabric length direction
Layer, the second upper layer and the second cutting optimal hold setting together, on the second hollow fabric length direction the second suede of the other end through layer with
Second cutting optimal holds setting together, the length of the second upper layer then exceeds the second suede and forms the second faying surface through layer and the second cutting optimal
Layer；The first hollow fabric and the second hollow fabric are spliced again from length direction using the first overlap joint surface layer and the second overlap joint surface layer
It is combined, wherein the first overlap joint surface layer is compounded on the second cutting optimal, the second overlap joint surface layer is compounded on the first upper layer, the
One suede is fitted closely through layer and is combined with each other through layer and the second suede.
First suede is equal through thickness degree through layer and third suede through layer, the second suede；First upper layer, the second upper layer and third
Upper layer thickness is equal；First cutting optimal, the second cutting optimal and third cutting optimal thickness are equal；First hollow fabric, in second
Empty fabric and third hollow fabric thickness are 8mm, each width 40mm for overlapping surface layer；
First overlap joint surface layer continuously weaves to be formed with the first hollow fabric；Second overlap joint surface layer and the second hollow fabric are continuous
Weaving is formed；Third overlap joint surface layer and the 4th overlap joint surface layer continuously weave to be formed with third hollow fabric；Aforementioned continuous weaving shape
Refer at overlap joint surface layer according to the lint-free structure hollow fabric in hollow fabric size requirements preparation part, i.e., according in overlap joint surface layer structure
Local suede is passed through from creel and is individually drawn by empty fabric size, is not involved in hollow fabric integral weaving, obtains the lint-free hollow fabric in part.
The preparation method of above-mentioned lightweight large scale hollow composite material, first by the first hollow fabric and the second hollow fabric
It is seamless to overlap, then with resin infiltration and solidify, both lightweight large scale hollow composite material.
Above-mentioned resin used is epoxy resin, and resin model LT-5078, producer is that Shanghai favour cypress new material science and technology is limited
Company, resin curing agent proportion: 100:30, fabric and resin system mass ratio=1:1；Above-mentioned curing process are as follows: 50 DEG C of solidifications
4h, then 70 DEG C of solidification 6h；
The present embodiment selects fabric specification parameter as follows:
The present embodiment prepares large scale Hollow composite board using vacuum diversion moulding process, wherein hollow fabric overlap joint sequence
Are as follows: the first hollow fabric/the second hollow fabric.It is as follows that particular product performance parameters are made in the present embodiment:
| Bending strength test | Compressive strength test | |
| Testing standard | GB/T2567-2008 | GB/T1041-2008 |
| Non-overlapping region | 25.2MPa | 7.5MPa |
| Overlapping regions | 23.5MPa | 7.1MPa |
| Strength retention | 93.3% | 94.7% |
As the result is shown using composite plate is controlled in present invention preparation large scale, compared to non-overlapping region, overlapping regions is hollow
Composite materials property is excellent, bending strength and compressive strength conservation rate difference 93.3% and 94.7%.
Embodiment 2
Lightweight large scale hollow composite material, including the first hollow fabric, the second hollow fabric and third hollow fabric；
First hollow fabric include the first suede through layer and be respectively provided at the first suede through the first upper layer of layer upper and lower surface and first below
Layer, first suede of one end holds setting through layer, the first upper layer and the first cutting optimal together on the first hollow fabric length direction, and first
The first suede of the other end holds the length of setting, the first cutting optimal then to surpass together through layer and the first upper layer on hollow fabric length direction
The first suede forms the first overlap joint surface layer through layer and the first upper layer out；Second hollow fabric includes the second suede through layer and is respectively provided at
Second upper layer and second cutting optimal of second suede through layer upper and lower surface, second suede of one end on the second hollow fabric length direction
Setting is held together through layer, the second upper layer and the second cutting optimal, and the second suede of the other end is through layer on the second hollow fabric length direction
Setting is held together with the second cutting optimal, the length of the second upper layer then exceeds the second suede and forms the second overlap joint through layer and the second cutting optimal
Surface layer；Third hollow fabric includes third suede through layer and be respectively provided at third suede third upper layer and third through layer upper and lower surface
Cutting optimal, the third suede of one end holds setting, third cutting optimal through layer and third upper layer together on third hollow fabric length direction
Length then exceed third suede and form third overlap joint surface layer through layer and third upper layer, it is another on third hollow fabric length direction
The third suede at end holds setting through layer and third cutting optimal together, the length of third upper layer then exceed third suede through layer and third below
Layer forms the 4th overlap joint surface layer；
Using the second overlap joint surface layer and third overlap joint surface layer by the second hollow fabric and third hollow fabric from length direction
Splicing is combined with each other, wherein the second overlap joint surface layer is compounded on third upper layer, third overlap joint surface layer is compounded in below second
On layer, the second suede is fitted closely through layer and is combined with each other through layer and third suede；Utilize the first overlap joint surface layer and the 4th overlap joint surface layer
First hollow fabric and third hollow fabric are combined with each other from length direction splicing, wherein the first overlap joint surface layer is compounded in the
On three cutting optimals, the 4th overlap joint surface layer is compounded on the first upper layer, and the first suede fits closely through layer and third suede through layer compound
Together.
First suede is equal through thickness degree through layer and third suede through layer, the second suede；First upper layer, the second upper layer and third
Upper layer thickness is equal；First cutting optimal, the second cutting optimal and third cutting optimal thickness are equal；First hollow fabric, in second
Empty fabric and third hollow fabric thickness are 15mm, each width 60mm for overlapping surface layer；
First overlap joint surface layer is cut by the first hollow fabric to be formed；Second overlap joint surface layer cuts shape by the second hollow fabric
At；Third overlap joint surface layer and the 4th overlap joint surface layer are cut by third hollow fabric and are formed.
The preparation method of above-mentioned lightweight large scale hollow composite material, first by the first hollow fabric, third hollow fabric
With the second hollow fabric is seamless overlaps, then by middle infiltration and solidified with resin, both lightweight large scale is hollow multiple
Condensation material.
Above-mentioned resin system used is epoxy resin, resin model E44, resin producer are as follows: blue star new material Wu Xishu
Rouge factory, resin curing agent proportion: 100:20, fabric and resin system mass ratio=1:1.2；Above-mentioned curing process are as follows: 60 DEG C solid
Change 6h；
The present embodiment selects fabric specification parameter as follows:
The present embodiment prepares large scale Hollow composite board using manual pasting forming process, wherein hollow fabric overlap joint sequence are as follows:
First hollow fabric/third hollow fabric/the second hollow fabric.It is as follows that particular product performance parameters are made in the present embodiment:
| Bending strength test | Compressive strength test | |
| Testing standard | GB/T2567-2008 | GB/T1041-2008 |
| Non-overlapping region | 16.2MPa | 1.55MPa |
| Overlapping regions | 15.7MPa | 1.46MPa |
| Strength retention | 96.9% | 94.2% |
As the result is shown using composite plate is controlled in present invention preparation large scale, compared to non-overlapping region, overlapping regions is hollow
Composite materials property is excellent, and bending strength and compressive strength conservation rate are respectively 96.9% and 94.2%.
Embodiment 3
With it is essentially identical in 2 structure of embodiment, except that third hollow fabric be two.
Surface layer and the 4th overlap joint surface layer are overlapped by all third hollow fabrics first with the third of each third hollow fabric
Splice from length direction and be combined with each other, formation both ends are respectively equipped with third overlap joint surface layer and the third of the 4th overlap joint surface layer adds
Long hollow fabric；Then the 4th overlap joint surface layer of the first overlap joint surface layer and third elongated hollow fabric one end is recycled to add third
Long hollow fabric and the first hollow fabric are stitched together from length direction, wherein the first overlap joint surface layer is compounded in third cutting optimal
On, the 4th overlap joint surface layer is compounded on the first upper layer, and the first suede is fitted closely through layer and is combined with each other through layer and third suede；Benefit
It will be in third elongated hollow fabric and second with the third overlap joint surface layer of the second overlap joint surface layer and third elongated hollow fabric one end
Empty fabric is stitched together from length direction, wherein the second overlap joint surface layer is compounded on third upper layer, it is multiple that third overlaps surface layer
It closes on the second cutting optimal, the second suede is fitted closely through layer and is combined with each other through layer and third suede.
First suede is equal through thickness degree through layer and third suede through layer, the second suede；First upper layer, the second upper layer and third
Upper layer thickness is equal；First cutting optimal, the second cutting optimal and third cutting optimal thickness are equal；First hollow fabric, in second
Empty fabric and third hollow fabric thickness are 5mm；
It is first that 5mm hollow fabric is trimmed to the first hollow fabric, the second hollow fabric shown in figure and the online by thickness
Three hollow fabrics, in addition to overlapping surface layer, three kinds of hollow fabric effective dimensions are for 10m*1m；First to fourth overlap joint surface layer is long
Degree is 20mm.Then overlap joint surface layer structure hollow fabric sequence is unreeled into overlap joint laying, realizes hollow fabric surface layer overlap joint, paving
Layer is carried out according to the first hollow fabric of figure, third hollow fabric, third hollow fabric and the second hollow fabric sequence, laying process
The seamless overlap joint of hollow fabric is realized by overlap joint surface layer root auxiliary positioning.In finally using epoxy-resin systems to having overlapped
Empty fabric impregnation is obtained after solidification with lightweight large scale and the totally continuous hollow composite material of internal cavities.
Above-mentioned resin system used is unsaturated-resin system, resin model are as follows: HS-307BH, resin producer are as follows: Changzhou
China Tech polymer limited liability company, resin/curing agent/promotor=100:2:0.6；Fabric and resin system mass ratio=1:
1.2；Above-mentioned curing process are as follows: 60 DEG C of solidification 3h, then 90 DEG C of solidification 5h；
The present embodiment selects fabric specification parameter as follows:
The present embodiment prepares large scale Hollow composite board using sprayup process, wherein hollow fabric overlap joint sequence are as follows:
First hollow fabric/third hollow fabric/third hollow fabric/second hollow fabric.Particular product performance parameters are made in the present embodiment
It is as follows:
| Bending strength test | Compressive strength test | |
| Testing standard | GB/T2567-2008 | GB/T1041-2008 |
| Non-overlapping region | 27.6MPa | 8.2MPa |
| Overlapping regions | 26.1MPa | 7.6MPa |
| Strength retention | 94.6% | 92.7% |
As the result is shown using composite plate is controlled in present invention preparation large scale, compared to non-overlapping region, overlapping regions is hollow
Composite materials property is excellent, and bending strength and compressive strength conservation rate are respectively 94.6% and 92.7%.
The result shows that: lightweight large scale hollow composite material fiber obtained by the various embodiments described above is continuous through, and is guaranteed big
Scale composite lap-joint mechanical property, compared to continuous hollow Fabric composites, lap-joint's flat crushing strength, 3 points
The basic mechanical performances such as bending strength, tensile strength keep 92% or more；The presence that surface layer structure is overlapped in hollow fabric can
It preferably realizes hollow fabric overlap joint limit, guarantees the precision and consistency of overlap joint size；The present invention is without taking composite material
It meets place and carries out surface layer reinforcement, conducive to the lightweight of hollow composite material；It can be theoretically under conditions of guaranteeing bond strength
The unrestricted large scale hollow composite material of breadth is prepared, and internal cavities are completely continuous, are greatly enlarged hollow composite wood
The application field of material；It is not necessarily to secondary operation or other post-processings after the completion of product is compound, ensures product quality stability and produces
Efficiency；Preparation process is easy to operate, to equipment complex without particular/special requirement, can be continuously produced, and high production efficiency is at low cost, fits
Mass production is closed, is a kind of processing method of structure-function integration.
Claims (10)
1. a kind of lightweight large scale hollow composite material, it is characterised in that: including the first hollow fabric and the second hollow fabric；
First hollow fabric include the first suede through layer and be respectively provided at the first suede through the first upper layer of layer upper and lower surface and first below
Layer, first suede of one end holds setting through layer, the first upper layer and the first cutting optimal together on the first hollow fabric length direction, and first
The first suede of the other end holds the length of setting, the first cutting optimal then to surpass together through layer and the first upper layer on hollow fabric length direction
The first suede forms the first overlap joint surface layer through layer and the first upper layer out；Second hollow fabric includes the second suede through layer and is respectively provided at
Second upper layer and second cutting optimal of second suede through layer upper and lower surface, second suede of one end on the second hollow fabric length direction
Setting is held together through layer, the second upper layer and the second cutting optimal, and the second suede of the other end is through layer on the second hollow fabric length direction
Setting is held together with the second cutting optimal, the length of the second upper layer then exceeds the second suede and forms the second overlap joint through layer and the second cutting optimal
Surface layer；The first hollow fabric and the second hollow fabric are spliced from length direction using the first overlap joint surface layer and the second overlap joint surface layer
It is combined with each other, wherein the first overlap joint surface layer is compounded on the second cutting optimal, the second overlap joint surface layer is compounded on the first upper layer,
First suede is fitted closely through layer and is combined with each other through layer and the second suede.
2. lightweight large scale hollow composite material as described in claim 1, it is characterised in that: further include more than one
Three hollow fabrics, third hollow fabric include third suede through layer and the third upper layer through layer upper and lower surface that is respectively provided at third suede
With third cutting optimal, the third suede of one end holds setting, third through layer and third upper layer together on third hollow fabric length direction
The length of cutting optimal then exceeds third suede and forms third overlap joint surface layer, third hollow fabric length direction through layer and third upper layer
The third suede of the upper other end holds setting through layer and third cutting optimal together, the length of third upper layer then exceeds third suede through layer and
Three cutting optimals form the 4th overlap joint surface layer；
When third hollow fabric is one, surface layer is overlapped by the second hollow fabric and third using the second overlap joint surface layer and third
Hollow fabric is combined with each other from length direction splicing, wherein the second overlap joint surface layer is compounded on third upper layer, third overlap joint
Surface layer is compounded on the second cutting optimal, and the second suede is fitted closely through layer and is combined with each other through layer and third suede；Utilize the first overlap joint
First hollow fabric and third hollow fabric are combined with each other by surface layer and the 4th overlap joint surface layer from length direction splicing, wherein the
One overlap joint surface layer is compounded on third cutting optimal, and the 4th overlap joint surface layer is compounded on the first upper layer, and the first suede is through layer and third
Suede is fitted closely through layer and is combined with each other；
When third hollow fabric is more than two, then taken first with the third overlap joint surface layer and the 4th of each third hollow fabric
Junction layer splices all third hollow fabrics from length direction to be combined with each other, and forms both ends and is respectively equipped with third faying surface
The third elongated hollow fabric of layer and the 4th overlap joint surface layer；Then the first overlap joint surface layer and third elongated hollow fabric one are recycled
Third elongated hollow fabric and the first hollow fabric are stitched together by the 4th overlap joint surface layer at end from length direction, wherein first
Overlap joint surface layer is compounded on third cutting optimal, and the 4th overlap joint surface layer is compounded on the first upper layer, and the first suede is through layer and third suede
It fits closely and is combined with each other through layer；It will using the third overlap joint surface layer of the second overlap joint surface layer and third elongated hollow fabric one end
Third elongated hollow fabric and the second hollow fabric are stitched together from length direction, wherein the second overlap joint surface layer is compounded in third
On upper layer, third overlap joint surface layer is compounded on the second cutting optimal, and the second suede is fitted closely through layer and is compounded in through layer and third suede
Together.
3. lightweight large scale hollow composite material as claimed in claim 2, it is characterised in that: the first suede is through layer, the second suede
It is equal through thickness degree through layer and third suede；First upper layer, the second upper layer and third upper layer thickness are equal；Below first
Layer, the second cutting optimal and third cutting optimal thickness are equal.
4. lightweight large scale hollow composite material as claimed in claim 2 or claim 3, it is characterised in that: the first hollow fabric,
Two hollow fabrics and third hollow fabric equal in width.
5. lightweight large scale hollow composite material as claimed in claim 2 or claim 3, it is characterised in that: first overlap joint surface layer with
First hollow fabric continuously weaves to be formed；Second overlap joint surface layer continuously weaves to be formed with the second hollow fabric；Third overlaps surface layer
It continuously weaves to be formed with third hollow fabric with the 4th overlap joint surface layer.
6. lightweight large scale hollow composite material as claimed in claim 2 or claim 3, it is characterised in that: first overlap joint surface layer by
First hollow fabric cuts to be formed；Second overlap joint surface layer is cut by the second hollow fabric to be formed；Third overlap joint surface layer and the 4th is taken
Junction layer is cut by third hollow fabric and is formed.
7. lightweight large scale hollow composite material as claimed in claim 3, it is characterised in that: the first overlap joint surface layer, second
The width for overlapping surface layer, third overlap joint surface layer and the 4th overlap joint surface layer is 5mm~100mm.
8. lightweight large scale hollow composite material as claimed in claim 2 or claim 3, it is characterised in that: the first hollow fabric,
Two hollow fabrics and third hollow fabric equal thickness, and be 3mm~50mm.
9. lightweight large scale hollow composite material as claimed in claim 2 or claim 3, it is characterised in that: compound resin used is
Epoxy resin, unsaturated-resin or phenolic resin.
10. the preparation method of lightweight large scale hollow composite material described in any one of claim 1-9, feature exist
In: first by the first hollow fabric and the second hollow fabric is seamless overlaps, then hollow fabric is infiltrated and consolidated with resin
Change, both obtains lightweight large scale hollow composite material.
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| CN109159440B (en) * | 2018-07-19 | 2019-11-19 | 中材科技股份有限公司 | A kind of three-dimensional hollow composite repair method |
| CN115091780A (en) * | 2022-05-18 | 2022-09-23 | 南京玻璃纤维研究设计院有限公司 | Method for preparing hollow fabric composite material by utilizing three-axis forming tool |
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| CA2626835A1 (en) * | 1999-09-20 | 2001-03-29 | Leroy Payne | Structure forming method, apparatus and product |
| CN101117746A (en) * | 2007-07-20 | 2008-02-06 | 中材科技股份有限公司 | Warp-weft two-way cross-layer connecting hollow fabric |
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