CN106515098A - Lightweight large-size hollow composite material, and preparation method thereof - Google Patents
Lightweight large-size hollow composite material, and preparation method thereof Download PDFInfo
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- CN106515098A CN106515098A CN201610968587.4A CN201610968587A CN106515098A CN 106515098 A CN106515098 A CN 106515098A CN 201610968587 A CN201610968587 A CN 201610968587A CN 106515098 A CN106515098 A CN 106515098A
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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 lightweight large-size hollow composite material, and a preparation method thereof. The lightweight large-size hollow composite material comprises a first hollow fabric and a second hollow fabric. In preparation, overlapping paving of the different fabric at a sequence is carried out, and the hollow fabric is infiltrated and cured with resin so as to obtain the lightweight large-size hollow composite material. According to a preparation method, a special structure design hollow fabric overlapping manner is adopted, fiber continuous breakthrough is realized, and the mechanical properties of the lightweight large-size hollow composite material at overlapping parts are ensured; the existing of a overlapping surface structure is capable of realizing hollow fabric overlapping limiting preferably, ensuring the precision and consistency of overlapping size; surface layer reinforcement of composite material overlapping parts is not necessary, and it is beneficial for reducing of the weight of the hollow composite material; the overlapping design is capable of preparing the large-size hollow composite material with unlimited breadth, and complete continuousness of an internal cavity is achieved; after product combination, no secondary processing or other subsequent process is needed, product quality stability and production efficiency are ensured; and application range of the hollow composite material is widened greatly. Operation of the preparation process is simple, no special requirement on compound equipment is promoted, continuous production can be realized, production efficiency is high, cost is low, and the preparation method is suitable for batch 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 technology
Hollow composite material is a kind of new interlayer composite material, constitute sandwich basis be top layer warp thread,
Weft yarn and two top layers of connection simultaneously form the Z-direction fiber of core.Hollow fabric directly forms three-dimensional overall multiple Jing after resin compounded
Condensation material sandwich, for cellular material and foamed materialss, hollow composite material have be difficult layering, can design
Property it is strong, can fill, pre-buried advantage, and good insulation, heat-insulated, soundproof effect have been widely used for track friendship at present
The field such as logical, vehicle mounted square cabin and building materials.There is inside hollow composite material continuous cavity, can be widely used in as structure sheaf double
The preparation of wall storage tank, is capable of achieving to ooze the monitoring of leakage by its internal cavities.But hollow fabric is limited due to width, at present only
The hollow fabric of fabric width≤1.8m can be prepared, application of the hollow fabric in large scale field is significantly limit.
It is less with regard to the patent of hollow fabric and its composite technology exploitation at present, and with regard to the hollow composite wood of large scale
Report prepared by material is less.Patent CN101480829B is a kind of preparation method of hollow fabric sheets, by board mold above
It is spacing to prepare the good hollow composite material of high stability, but it is hollow compound to prepare lightweight large scale using the program merely
Material.Hollow multiple material is mechanically connected or second bonding is the approach for solving hollow multiple material large scale application, but is mechanically connected and will lead
Joint stress concentration is caused, the intensity of joint composite is reduced, and it is solid in hollow multiple material junction to be mechanically connected needs
Process, cumbersome, efficiency is low, high cost；Second bonding mode is connected due to the composite that discontinuously causes of surface layer fiber
Place's intensity is difficult to ensure that, while being unfavorable for that composite continuous chemical conversion type and cost degradation are realized.
Patent CN103692664A discloses a kind of joining method of hollow composite material joint, and the invention is by hollow fabric
Edge cutting is neatly spliced afterwards, realizes the bonding strength of hollow composite material by surface layer reinforcement, and the program can prepare big chi
Very little hollow composite material, hollow composite material are completely continuous in joint internal cavities, but program bonding strength is poor, face
The introducing of layer supporting material can cause composite to increase weight, while the seamless cutting of fabric is also difficult to mass production.If adopting
With solid glass steel lap joint process, can undoubtedly cause the thickness of hollow composite material by way of by fabric joint overlap processing
It is uneven, it is often more important that, the two cannot all ensure that the cavity of joint composite inner is continuous.
A kind of lightweight large scale hollow composite material is developed for this, hollow composite material connection in prior art is solved
Intensity difference, supporting material are introduced causes weight gain problem, hollow fabric splicing/lap gap control difficulty is big and is difficult to batch metaplasia
The problems such as product, is particularly important.
The content of the invention
It is an object of the invention to provide a kind of lightweight large scale hollow composite material and preparation method thereof, solves existing skill
In art, hollow composite material bonding strength is poor, supporting material is introduced causes weight gain problem, the control of hollow fabric splicing/lap gap
Difficulty is big and is difficult to the problem of 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 floss Jing layers and is respectively provided at first upper layer and the first cutting optimal of the first floss Jing layer upper and lower surfaces, in first
On empty fabric length direction, the first floss Jing layers of one end, the first upper layer and the first cutting optimal hold setting, the first hollow fabric together
On length direction, the first floss Jing layers and the first upper layer of the other end holds the length of setting, the first cutting optimal then to exceed the first floss together
Jing layers and the first upper layer form first and overlap surface layer；Second hollow fabric includes the second floss Jing layers and is respectively provided at the second floss Jing
Second upper layer and the second cutting optimal of layer upper and lower surface, second floss Jing layers of one end on the second hollow fabric length direction, the
Two upper layers and the second cutting optimal hold setting together, on the second hollow fabric length direction under the second floss Jing layers and second of the other end
Surface layer holds setting together, the length of the second upper layer then forms second beyond the second floss Jing layers and the second cutting optimal and overlaps surface layer；Profit
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 floss
Jing layers and the second floss Jing layers are brought into close contact and are combined with each other.
The application efficiently solves that hollow composite material bonding strength in prior art is poor, supporting material is introduced causes weightening
Problem, hollow fabric splicing/lap gap control difficulty greatly and are difficult to the problem of mass production.
The each hollow fabric of the application can not it is wide can also be wide, 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 also includes more than one 3rd hollow fabric, and the 3rd hollow fabric includes the 3rd floss Jing layers and is respectively provided at the 3rd floss Jing
3rd upper layer and the 3rd cutting optimal of layer upper and lower surface, the 3rd floss Jing layers of one end and the on the 3rd hollow fabric length direction
Three upper layers hold the length of setting, the 3rd cutting optimal then to form the 3rd faying surface beyond the 3rd floss Jing layers and the 3rd upper layer together
Layer, on the 3rd hollow fabric length direction, the 3rd floss Jing layers and the 3rd cutting optimal of the other end holds setting, the 3rd upper layer together
Length then exceeds the 3rd floss Jing layers and the 3rd cutting optimal forms the 4th and overlaps surface layer；
When the 3rd hollow fabric is one, using the second overlap joint surface layer and the 3rd overlap joint surface layer by the second hollow fabric and
3rd hollow fabric is combined with each other from length direction splicing, wherein the second overlap joint surface layer is compounded on the 3rd upper layer, the 3rd
Overlap joint surface layer is compounded on the second cutting optimal, and the second floss Jing layers and the 3rd floss Jing layers are brought into close contact and are combined with each other；Using first
First hollow fabric and the 3rd hollow fabric are combined with each other by overlap joint surface layer and the 4th overlap joint surface layer from length direction splicing, its
In first overlap joint surface layer be compounded on the 3rd cutting optimal, the 4th overlap joint surface layer is compounded on the first upper layer, the first floss Jing layers and
3rd floss Jing layers are brought into close contact and are combined with each other；
When the 3rd hollow fabric is two or more, then first with the 3rd overlap joint surface layer and the of each the 3rd hollow fabric
All 3rd hollow fabrics splices from length direction and are combined with each other by four overlap joint surface layers, are formed and are respectively arranged at two ends with the 3rd and take
3rd lengthening hollow fabric of junction layer and the 4th overlap joint surface layer；Then the first overlap joint surface layer and the 3rd elongated hollow is recycled to knit
3rd lengthening hollow fabric and the first hollow fabric are stitched together by the 4th overlap joint surface layer of thing one end from length direction, wherein
First overlap joint surface layer is compounded on the 3rd cutting optimal, and the 4th overlap joint surface layer is compounded on the first upper layer, the first floss Jing layers and the
Three floss Jing layers are brought into close contact and are combined with each other；The 3rd faying surface of hollow fabric one end is lengthened using the second overlap joint surface layer and the 3rd
3rd lengthening 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 3rd upper layer, the 3rd overlap joint surface layer is compounded on the second cutting optimal, and the second floss Jing layers and the 3rd floss Jing layers are brought into close contact again
It is combined.
In order to be further ensured that the uniformity of lightweight large scale hollow composite material, the first floss Jing layers, the second floss Jing layers
And the 3rd floss Jing thickness degree it is equal；First upper layer, the second upper layer and the 3rd upper layer thickness are equal；First cutting optimal,
Two cutting optimals and the 3rd cutting optimal thickness are equal.
In order to be further ensured that the uniformity and seriality of lightweight large scale hollow composite material, the first hollow fabric,
Second hollow fabric and the 3rd hollow fabric equal in width.
In order to ensure the seriality of fabric, while saving material, the first overlap joint surface layer is continuously weaved with the first hollow fabric
Formed；Second overlap joint surface layer continuously weaves to be formed with the second hollow fabric；3rd overlap joint surface layer and the 4th overlap joint surface layer and the 3rd
Hollow fabric continuously weaves to be formed.Fiber used can be in glass fibre, carbon fiber, aramid fiber or quartz fibre one
Kind.The lint-free structure hollow fabric in local is prepared according to hollow fabric size requirements, i.e., according to overlap joint surface layer size by local floss Jing
Individually draw from creel, be not involved in hollow fabric integral weaving, obtain the lint-free hollow fabric in local.
Used as another kind of technical scheme of the application, the first overlap joint surface layer is formed by the first hollow fabric cutting；Second takes
Junction layer is formed by the second hollow fabric cutting；3rd overlap joint surface layer and the 4th overlap joint surface layer are by the 3rd hollow fabric cutting shape
Into.
In order to ensure the seriality of lightweight large scale hollow composite material and can meet general Production requirement, first takes
The width of junction layer, the second overlap joint surface layer, the 3rd overlap joint surface layer and the 4th overlap joint surface layer is 5mm～100mm；First hollow knits
Thing, the second hollow fabric and the 3rd hollow fabric equal thickness, and it is 3mm～50mm.
The application is complex as infiltrating using resin and solidifying, 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 with resin is by middle infiltration and solidifies, both obtained lightweight large scale hollow composite material.Resin is to fibre
The impregnation process of dimension adopts hand pasting forming or vacuum diversion molding.
The NM technology of the present invention is with reference to prior art.
Beneficial effects of the present invention：Compared with prior art, technical solution of the present invention exists in solving prior art and asks
Topic simultaneously successfully prepares lightweight large scale hollow composite material, it is possible to achieve the composite of arbitrary dimension, and adjacent takes
Junction layer structure hollow fabric construction is unified, and prepares without the need for differentiation, produces in enormous quantities beneficial to fabric；Hollow fabric overlaps surface layer
With hollow fabric surface layer integral weaving, fiber is continuous through, it is ensured that mechanical property of the large-sized composite material in lap-joint；In
Exist in empty fabric and can preferably realize that hollow fabric overlap joint is spacing, it is ensured that the precision and concordance of overlap joint size；The present invention
Without the need for carrying out surface layer reinforcement to composite lap-joint, beneficial to the lightweight of hollow composite material；Based on hollow fabric itself Jing
To the seriality in direction, hollow composite material warp-wise size is unrestricted, and hollow fabric maximum fabric width≤1.8m at present, limit
Its application in significantly wide-range, the present invention have invented hollow fabric surface layer overlapping technology from fabric construction, are ensureing to take
Fabric width and the unrestricted large scale hollow composite material of length can be prepared under conditions of connecing intensity, and internal cavities connect completely
It is continuous, it is greatly enlarged the application of hollow composite material；Without the need for secondary operations or other post processings after the completion of product is compound, protect
Product quality stability and production efficiency are demonstrate,proved；The invention preparation process is simple to operate, to equipment complex without particular/special requirement, can be even
Continuous metaplasia is produced, and production efficiency is high, low cost, is adapted to mass production.
Description of the drawings
Fig. 1 is 3D hollow fabric organizational structure schematic diagrams in prior art；
Fig. 2 is the first hollow fabric schematic diagram of the invention；
Fig. 3 is the 3rd hollow fabric schematic diagram of the 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 lines；3- weft yarns；4- the first floss Jing layers；The first upper layers of 5-；6-
One cutting optimal；7- first overlaps surface layer；The 3rd floss Jing layers of 8-；The 3rd upper layers of 9-；The 3rd cutting optimals of 10-；The 3rd faying surfaces of 11-
Layer；12- the 4th overlaps surface layer；13- the second floss Jing layers；The second upper layers of 14-；The second cutting optimals of 15-；16- second overlaps surface layer；
17- hollow fabric surface layer overlapping regions；The first hollow fabrics of 18-；The second hollow fabrics of 19-；The 3rd hollow fabrics of 20-.
Specific embodiment
For a better understanding of the present invention, present disclosure is further elucidated with reference to embodiment, but the present invention
Content is not limited solely to the following examples.
In embodiment, in each embodiment, the first hollow fabric, the second hollow fabric and the 3rd hollow fabric are by alkali-free glass
Glass fiber integral weaving is formed.
Embodiment 1
As illustrated, lightweight large scale hollow composite material, including the first hollow fabric and the second hollow fabric；First
Hollow fabric includes the first floss Jing layers and being respectively provided at first upper layer and the first cutting optimal of the first floss Jing layer upper and lower surfaces, the
On one hollow fabric length direction, the first floss Jing layers of one end, the first upper layer and the first cutting optimal hold setting together, and first is hollow
On fabric length direction, the first floss Jing layers and the first upper layer of the other end holds the length of setting, the first cutting optimal together then beyond the
One floss Jing layers and the first upper layer form first and overlap surface layer；Second hollow fabric includes the second floss Jing layers and is respectively provided at second
Second upper layer and the second cutting optimal of floss Jing layer upper and lower surfaces, the second floss Jing of one end on the second hollow fabric length direction
Layer, the second upper layer and the second cutting optimal hold settings together, on the second hollow fabric length direction the second floss Jing layers of the other end with
Second cutting optimal holds the length of setting, the second upper layer then to form the second faying surface beyond the second floss Jing layers and the second cutting optimal together
Layer；Will be the first hollow fabric and the second hollow fabric multiple from length direction splicing 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 floss Jing layers and the second floss Jing layers are brought into close contact and are combined with each other.
First floss Jing layers, the second floss Jing layers and the 3rd floss Jing thickness degree are equal；First upper layer, the second upper layer and the 3rd
Upper layer thickness is equal；First cutting optimal, the second cutting optimal and the 3rd cutting optimal thickness are equal；First hollow fabric, in second
Empty fabric and the 3rd hollow fabric thickness are 8mm, the width 40mm of each overlap joint surface layer；
First overlap joint surface layer continuously weaves to be formed with the first hollow fabric；Second overlap joint surface layer is continuous with the second hollow fabric
Weaving is formed；3rd overlap joint surface layer and the 4th overlap joint surface layer continuously weave to be formed with the 3rd hollow fabric；Aforementioned continuous weaving shape
Refer to into overlap joint surface layer and the lint-free structure hollow fabric in local is prepared according to hollow fabric size requirements, i.e., according in overlap joint surface layer structure
Local floss Jing is individually drawn by empty fabric size from creel, is not involved in hollow fabric integral weaving, obtains that local is lint-free hollow to knit
Thing.
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 infiltrated and solidified with resin, both obtained lightweight large scale hollow composite material.
Above-mentioned resin used is epoxy resin, and resin model is LT-5078, and producer is that Shanghai favour cypress new material science and technology is limited
Company, resin curing agent proportioning：100:30, fabric and resin system mass ratio=1:1；Above-mentioned curing process is：50 DEG C of solidifications
4h, then 70 DEG C solidify 6h；
The present embodiment is as follows from fabric specification parameter：
The present embodiment prepares large scale Hollow composite board, wherein hollow fabric overlap joint order using vacuum diversion moulding process
For：First hollow fabric/the second hollow fabric.It is as follows that the present embodiment is obtained particular product performance parameters：
| Bending strength is tested | Compressive strength is tested | |
| 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 a result show to prepare in large scale using the present invention and control composite plate, compared to non-overlapping region, overlapping regions is hollow
Composite materials property is excellent, and its bending strength and compressive strength conservation rate distinguish 93.3% and 94.7%.
Embodiment 2
Lightweight large scale hollow composite material, including the first hollow fabric, the second hollow fabric and the 3rd hollow fabric；
First hollow fabric includes the first floss Jing layers and is respectively provided at below first upper layer and first of the first floss Jing layer upper and lower surfaces
Layer, on the first hollow fabric length direction, the first floss Jing layers of one end, the first upper layer and the first cutting optimal hold setting together, and first
On hollow fabric length direction, the first floss Jing layers and the first upper layer of the other end holds setting, the length of the first cutting optimal then to surpass together
Go out the first floss Jing layers and the first upper layer forms first and overlaps surface layer；Second hollow fabric includes the second floss Jing layers and is respectively provided at
Second upper layer and the second cutting optimal of the second floss Jing layer upper and lower surfaces, second floss of one end on the second hollow fabric length direction
Jing layers, the second upper layer and the second cutting optimal hold setting together, the second floss Jing layers of the other end on the second hollow fabric length direction
The length of setting, the second upper layer is held then to form the second overlap joint beyond the second floss Jing layers and the second cutting optimal with the second cutting optimal together
Surface layer；3rd hollow fabric includes the 3rd floss Jing layers and is respectively provided at the 3rd upper layer and the 3rd of the 3rd floss Jing layer upper and lower surfaces
Cutting optimal, on the 3rd hollow fabric length direction, the 3rd floss Jing layers and the 3rd upper layer of one end holds setting, the 3rd cutting optimal together
Length then exceed the 3rd floss Jing layers and the 3rd upper layer and form the 3rd and overlap surface layer, it is another on the 3rd hollow fabric length direction
The 3rd floss Jing layers and the 3rd cutting optimal at end holds the length of setting, the 3rd upper layer then to exceed below the 3rd floss Jing layers and the 3rd together
Layer forms the 4th and overlaps surface layer；
Surface layer is overlapped by the second hollow fabric and the 3rd hollow fabric from length direction using the second overlap joint surface layer and the 3rd
Splicing is combined with each other, wherein the second overlap joint surface layer is compounded on the 3rd upper layer, the 3rd overlap joint surface layer is compounded in below second
On layer, the second floss Jing layers and the 3rd floss Jing layers are brought into close contact and are combined with each other；Using the first overlap joint surface layer and the 4th overlap joint surface layer
First hollow fabric and the 3rd 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 floss Jing layers and the 3rd floss Jing layers are brought into close contact compound
Together.
First floss Jing layers, the second floss Jing layers and the 3rd floss Jing thickness degree are equal；First upper layer, the second upper layer and the 3rd
Upper layer thickness is equal；First cutting optimal, the second cutting optimal and the 3rd cutting optimal thickness are equal；First hollow fabric, in second
Empty fabric and the 3rd hollow fabric thickness are 15mm, the width 60mm of each overlap joint surface layer；
First overlap joint surface layer is formed by the first hollow fabric cutting；Second overlap joint surface layer is by the second hollow fabric cutting shape
Into；3rd overlap joint surface layer and the 4th overlap joint surface layer are formed by the 3rd hollow fabric cutting.
The preparation method of above-mentioned lightweight large scale hollow composite material, first by the first hollow fabric, the 3rd hollow fabric
It is seamless with the second hollow fabric to overlap, then with resin is by middle infiltration and solidifies, both obtained lightweight large scale hollow multiple
Condensation material.
Above-mentioned resin system used is epoxy resin, and resin model is E44, and resin producer is：Blue star new material Wu Xishu
Fat factory, resin curing agent proportioning：100:20, fabric and resin system mass ratio=1:1.2；Above-mentioned curing process is：60 DEG C solid
Change 6h；
The present embodiment is as follows from fabric specification parameter：
The present embodiment prepares large scale Hollow composite board using manual pasting forming process, and wherein hollow fabric overlap joint order is：
First hollow fabric/the 3rd hollow fabric/the second hollow fabric.It is as follows that the present embodiment is obtained particular product performance parameters：
| Bending strength is tested | Compressive strength is tested | |
| 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 a result show to prepare in large scale using the present invention and control composite plate, compared to non-overlapping region, overlapping regions is hollow
Composite materials property is excellent, and its bending strength and compressive strength conservation rate are respectively 96.9% and 94.2%.
Embodiment 3
It is essentially identical with 2 structure of embodiment, except that the 3rd hollow fabric is two.
Surface layer is overlapped by all 3rd hollow fabrics first with the 3rd overlap joint surface layer and the 4th of each the 3rd hollow fabric
Splice from length direction and be combined with each other, formation is respectively arranged at two ends with the Acanthopanan trifoliatus (L.) Merr. of the 3rd overlap joint surface layer and the 4th overlap joint surface layer
Long hollow fabric；Then recycle first to overlap surface layer and the 4th of the 3rd lengthening hollow fabric one end the surface layer is overlapped by Acanthopanan trifoliatus (L.) Merr.
Long hollow fabric and the first hollow fabric are stitched together from length direction, wherein the first overlap joint surface layer is compounded in the 3rd cutting optimal
On, the 4th overlap joint surface layer is compounded on the first upper layer, and the first floss Jing layers and the 3rd floss Jing layers are brought into close contact and are combined with each other；Profit
The 3rd overlap joint surface layer that hollow fabric one end is lengthened with the second overlap joint surface layer and the 3rd is lengthened the 3rd in hollow fabric and second
Empty fabric is stitched together from length direction, wherein the second overlap joint surface layer is compounded on the 3rd upper layer, the 3rd overlap joint surface layer is multiple
Close on the second cutting optimal, the second floss Jing layers and the 3rd floss Jing layers are brought into close contact and are combined with each other.
First floss Jing layers, the second floss Jing layers and the 3rd floss Jing thickness degree are equal；First upper layer, the second upper layer and the 3rd
Upper layer thickness is equal；First cutting optimal, the second cutting optimal and the 3rd cutting optimal thickness are equal；First hollow fabric, in second
Empty fabric and the 3rd hollow fabric thickness are 5mm；
First hollow fabric figure shown in, second hollow fabric and the are online trimmed to for 5mm hollow fabrics by thick first
Three hollow fabrics, in addition to overlap joint surface layer, three kinds of hollow fabric effective dimensions are as 10m*1m；First to fourth overlap joint surface layer is long
Degree is 20mm.Then overlap joint surface layer structure hollow fabric order is unreeled into overlap joint laying, realizes that hollow fabric surface layer is overlapped, paving
Layer is carried out according to the first hollow fabric of figure, the 3rd hollow fabric, the 3rd hollow fabric and the second hollow fabric order, laying process
The seamless overlap joint of hollow fabric is realized by overlapping surface layer root auxiliary positioning.During epoxy-resin systems are finally used to having overlapped
Empty fabric impregnation, obtains 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, and resin model is：HS-307BH, resin producer is：Changzhou
China Tech polymer limited company, resin/curing agent/accelerator=100：2：0.6；Fabric and resin system mass ratio=1:
1.2；Above-mentioned curing process is：60 DEG C of solidification 3h, then 90 DEG C solidify 5h；
The present embodiment is as follows from fabric specification parameter：
The present embodiment prepares large scale Hollow composite board using sprayup process, and wherein hollow fabric overlap joint order is：
First hollow fabric/the 3rd hollow fabric/the 3rd hollow fabric/the second hollow fabric.The present embodiment is obtained particular product performance parameters
It is as follows：
| Bending strength is tested | Compressive strength is tested | |
| 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 a result show to prepare in large scale using the present invention and control composite plate, compared to non-overlapping region, overlapping regions is hollow
Composite materials property is excellent, and its bending strength and compressive strength conservation rate are respectively 94.6% and 92.7%.
As a result show：Obtained by the various embodiments described above, lightweight large scale hollow composite material fiber is continuous through, it is ensured that big
Mechanical property of the scale composite in lap-joint, 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 more than 92%；The presence that surface layer structure is overlapped in hollow fabric can
Preferably realize that hollow fabric overlap joint is spacing, it is ensured that the precision and concordance of overlap joint size；The present invention is without the need for taking to composite
The place of connecing carries out surface layer reinforcement, beneficial to the lightweight of hollow composite material；Can be in theory under conditions of bond strength is ensured
The unrestricted large scale hollow composite material of fabric width is prepared, and internal cavities are completely continuous, are greatly enlarged hollow composite wood
The application of material；Without the need for secondary operations or other post processings after the completion of product is compound, it is ensured that product quality stability and production
Efficiency；Preparation process is simple to operate, to equipment complex without particular/special requirement, can be continuously produced, and production efficiency is high, 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 includes the first floss Jing layers and is respectively provided at below first upper layer and first of the first floss Jing layer upper and lower surfaces
Layer, on the first hollow fabric length direction, the first floss Jing layers of one end, the first upper layer and the first cutting optimal hold setting together, and first
On hollow fabric length direction, the first floss Jing layers and the first upper layer of the other end holds setting, the length of the first cutting optimal then to surpass together
Go out the first floss Jing layers and the first upper layer forms first and overlaps surface layer；Second hollow fabric includes the second floss Jing layers and is respectively provided at
Second upper layer and the second cutting optimal of the second floss Jing layer upper and lower surfaces, second floss of one end on the second hollow fabric length direction
Jing layers, the second upper layer and the second cutting optimal hold setting together, the second floss Jing layers of the other end on the second hollow fabric length direction
The length of setting, the second upper layer is held then to form the second overlap joint beyond the second floss Jing layers and the second cutting optimal with the second cutting optimal together
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 floss Jing layers and the second floss Jing layers are brought into close contact and are combined with each other.
2. lightweight large scale hollow composite material as claimed in claim 1, it is characterised in that：Also include more than one the
Three hollow fabrics, the 3rd hollow fabric include the 3rd floss Jing layers and are respectively provided at the 3rd upper layer of the 3rd floss Jing layer upper and lower surfaces
With the 3rd cutting optimal, on the 3rd hollow fabric length direction the 3rd floss Jing layers and the 3rd upper layer of one end hold together setting, the 3rd
The length of cutting optimal then exceeds the 3rd floss Jing layers and the 3rd upper layer forms the 3rd and overlaps surface layer, the 3rd hollow fabric length direction
The 3rd floss Jing layers and the 3rd cutting optimal of the upper other end holds the length of setting, the 3rd upper layer together then beyond the 3rd floss Jing layers and the
Three cutting optimals form the 4th and overlap surface layer；
When the 3rd hollow fabric is one, surface layer is overlapped by the second hollow fabric and the 3rd using the second overlap joint surface layer and the 3rd
Hollow fabric is combined with each other from length direction splicing, wherein the second overlap joint surface layer is compounded on the 3rd upper layer, the 3rd overlap joint
Surface layer is compounded on the second cutting optimal, and the second floss Jing layers and the 3rd floss Jing layers are brought into close contact and are combined with each other；Using the first overlap joint
First hollow fabric and the 3rd 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 the 3rd cutting optimal, and the 4th overlap joint surface layer is compounded on the first upper layer, the first floss Jing layers and the 3rd
Floss Jing layers are brought into close contact and are combined with each other；
When the 3rd hollow fabric is two or more, then take first with the 3rd overlap joint surface layer and the 4th of each the 3rd hollow fabric
All 3rd hollow fabrics are spliced from length direction and are combined with each other by junction layer, and formation is respectively arranged at two ends with the 3rd faying surface
3rd lengthening hollow fabric of layer and the 4th overlap joint surface layer；Then recycle first to overlap surface layer and the 3rd and lengthen hollow fabric one
3rd lengthening 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 the 3rd cutting optimal, and the 4th overlap joint surface layer is compounded on the first upper layer, the first floss Jing layers and the 3rd floss
Jing layers are brought into close contact and are combined with each other；The 3rd overlap joint surface layer that hollow fabric one end is lengthened using the second overlap joint surface layer and the 3rd will
3rd lengthening hollow fabric and the second hollow fabric are stitched together from length direction, wherein the second overlap joint surface layer is compounded in the 3rd
On upper layer, the 3rd overlap joint surface layer is compounded on the second cutting optimal, and the second floss Jing layers and the 3rd floss Jing layers are brought into close contact and are compounded in
Together.
3. lightweight large scale hollow composite material as claimed in claim 2, it is characterised in that：First floss Jing layers, the second floss
Jing layers and the 3rd floss Jing thickness degree are equal；First upper layer, the second upper layer and the 3rd upper layer thickness are equal；Below first
Layer, the second cutting optimal and the 3rd 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：First hollow fabric,
Two hollow fabrics and the 3rd 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；3rd overlap joint surface layer
Continuously weave to be formed with the 4th overlap joint surface layer with the 3rd hollow fabric.
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 cutting is formed；Second overlap joint surface layer is formed by the second hollow fabric cutting；3rd overlap joint surface layer and the 4th is taken
Junction layer is formed by the 3rd hollow fabric cutting.
7. lightweight large scale hollow composite material as claimed in claim 3, it is characterised in that：First overlap joint surface layer, second
The width of overlap joint surface layer, the 3rd 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：First hollow fabric,
Two hollow fabrics and the 3rd hollow fabric equal thickness, and it is 3mm～50mm.
9. lightweight large scale hollow composite material as claimed in claim 2 or claim 3, it is characterised in that：Being combined resin used is
Epoxy resin, unsaturated-resin or phenolic resin.
10. the preparation method of the lightweight large scale hollow composite material described in claim 1-9 any one, its 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 obtained lightweight large scale hollow composite material.
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