CN105544926A - High-compression-resistance three-dimensional hollow composite floor and manufacturing method thereof - Google Patents
High-compression-resistance three-dimensional hollow composite floor and manufacturing method thereof Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
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Abstract
The invention discloses a high-compression-resistance three-dimensional hollow composite floor and a manufacturing method thereof and aims at solving the technical problems that in the prior art which is mentioned in the background technology, a three-dimensional hollow composite floor is low in compressive strength, compression resistance of a composite material is improved to a certain extent by increasing the pile warp density only through structural design of a three-dimensional hollow fabric, but the preparation process of the hollow fabric can be caused difficult by pile warp densification, the pile warp densification range is limited, and the requirements are still hard to satisfy. According to the technical scheme, the high-compression-resistance three-dimensional hollow composite floor comprises a three-dimensional hollow fabric constituting the overall frame of the three-dimensional hollow composite floor and one or more intermediate reinforcing ribs which are arranged in gaps in a pile warp structural layer of the three-dimensional hollow fabric. The high-compression-resistance three-dimensional hollow composite floor has the advantages that the special structure of the floor integrates mechanical performance, in particular to compressive strength, of traditional solid glass fiber reinforced plastic and that of carbon steel, and the weight reduction effect is achieved for a three-dimensional composite board, foam and a honeycomb sandwich composite material.
Description
Technical field
The present invention relates to a kind of 3D hollow composite floor board and manufacture method thereof, be specifically related to 3D hollow composite floor board field, particularly one high resistance to compression 3D hollow composite floor board and manufacture method thereof.
Background technology
Along with in global range to energy-saving and emission-reduction, the advocating of low-carbon economy, high-strength light floor has become the trend of current floor development.Along with the development of modern technologies, flooring structure is slowly substituted by the floating floor of high-strength light by previous aluminium alloy floor, and wherein floating floor mainly comprises foam layer floor, honeycomb interlayer floor and 3D hollow composite material floor.
Patent CN2887694 has invented a kind of levitation vehicle carriage composite floor adopting foamed sandwich structure; Patent CN102080439A and CN102695602A has designed and developed the composite floor board of honeycomb sandwich construction; The appearance of foam layer/honeycomb sandwich construction composite floor board achieves the effect of floor high-strength light, but conventional sandwich structure floor is formed by covering and intermediate core layer splicing, causes its in use easily layering.
3D hollow composite material is a kind of novel sandwich material, the basis forming this structure is the Z-direction fiber forming the warp on top layer, weft yarn and connection two top layers and form core, and its typical space characteristic morphology is that core presents the figure of eight (see Fig. 4) along warp-wise.Hollow fabric can transient absorption resin, and Z-direction fiber makes fabric automatic moulding to design height under " capillarity " effect, forms the core filled composite material of sandwich structure.Compared to traditional solid glass fiber reinforced plastic, this material, under the prerequisite ensureing basic rigidity, achieves larger weight loss effect.This material, owing to adopting three-dimension integrally forming technique, compares with the interlayer composite material such as legacy cellular, foam core material, except having the premium properties such as higher bending rigidity/weight ratio, also has many merits: (1) has good globality; (2) between panel, core, boundary strength improves greatly, can not produce layering; (3) improve shock resistance; (4) can Integratively composite molding.
Patent CN104295056A discloses a kind of hollow interlayer composite material floor and preparation method thereof.But, because hollow fabric suede is through the restriction through density of structure and suede, make the compressive strength of hollow composite material relatively low, compressive strength as common 15mm hollow composite material is only 2.5MPa, the compressive strength of 18mm hollow composite material is only 1.8MPa, the compressive strength of 20mm hollow composite material is only 1.2MPa, and the compressive strength of hollow composite material reduces with the increase of fabric height.Usual helicopter floor, track traffic floor etc. require compressive strength >=3MPa, and ordinary hollow composite plate is difficult to meet its high pouring.Usually the encrypted mode of suede is adopted to improve the entire compression ability of 3D hollow composite floor board at present, but suede brings great difficulty through adding the empty fabric preparation process of secret meeting centering, this greatly improves the preparation cost of 3D hollow composite floor board, and suede is through encryption limited extent, is still difficult to meet the requirement of high-performance floor to 3D hollow composite material.
Therefore, develop the lightweight 3D hollow composite floor board that a kind of anti-pressure ability is strong, cost is low and manufacture method particularly urgent.
Summary of the invention
Technical problem to be solved by this invention is: lower for the 3D hollow composite floor board compressive strength of the prior art mentioned in background technology, though and merely improve suede by 3D hollow fabric structure design and improve composite material anti-pressure ability to a certain extent through the mode of density, but suede brings difficulty through adding the empty fabric preparation process of secret meeting centering, and suede is through encryption limited extent, is still difficult to meet the technical problem of high-performance floor to the requirement of 3D hollow composite material.
Design philosophy of the present invention is, at suede pre-buried middle reinforced rib in deck space of existing 3D hollow fabric, and makes it to be processed into an entirety.
One disclosed by the invention high resistance to compression 3D hollow composite floor board and manufacture method thereof, to reach the object effectively improving 3D hollow composite floor board compressive strength.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of high resistance to compression 3D hollow composite floor board, comprises the 3D hollow fabric of formation 3D hollow composite floor board general frame and is arranged on the middle reinforced rib that be no less than one of 3D hollow fabric suede in deck space.
Described 3D hollow fabric in the present invention is conventional products disclosed in prior art, and its 3D hollow fabric comprises upper layer, cutting optimal and intermediate core layer; Intermediate core layer is connection two top layers and forms the Z-direction fiber of core.
High resistance to compression 3D hollow composite floor board in the present invention, is composited by 3D hollow fabric and middle reinforced rib entirety; Wherein, 3D hollow fabric composite floor board general frame, gives the characteristic of composite floor board globality and loss of weight; Middle reinforced rib is be embedded in the high resistance to compression composite material of 3D hollow fabric suede in deck space; This kind of structure design effectively enhances the compressive property of 3D hollow composite floor board.
High resistance to compression 3D hollow composite floor board in the present invention, because the mechanical performance of traditional solid glass fiber compound material, carbon fibre composite both taken into account by its special construction, particularly compressive strength, realizes again the weight loss effect of 3D Hollow composite board, foam, honeycomb sandwich composite.
To the improvement of above-mentioned high resistance to compression 3D hollow composite floor board, the uniform 3D hollow fabric suede that is arranged on of middle reinforced rib is in deck space.The middle reinforced rib uniform 3D of being arranged on hollow fabric suede object in deck space in this high resistance to compression 3D hollow composite floor board is, effectively ensure that the uniformity of high resistance to compression 3D hollow composite floor board high pressure resistance energy.
To the improvement of above-mentioned high resistance to compression 3D hollow composite floor board, 3D hollow fabric is one in glass fiber hollow fabric, carbon fiber hollow fabric, aramid fiber hollow fabric or glass fiber and carbon fiber hybrid hollow fabric.Glass fiber hollow fabric described here, carbon fiber hollow fabric, aramid fiber hollow fabric, glass fiber and carbon fiber hybrid hollow fabric are conventional products disclosed in prior art, and concrete composition and preparation process the present invention are not all described in detail.
To the improvement of above-mentioned high resistance to compression 3D hollow composite floor board, middle reinforced rib is be embedded in the composite material of 3D hollow fabric suede in deck space, and its material is have the one in the solid glass fibrous composite of stronger compressive strength, carbon fibre composite or aramid fiber reinforced composite.Solid glass fibrous composite, carbon fibre composite or aramid fiber reinforced composite described here are conventional material disclosed in prior art, and concrete composition and preparation process the present invention are not all described in detail.
The invention also discloses a kind of high resistance to compression 3D hollow composite floor board manufacture method, comprise the steps:
1) 3D hollow fabric is chosen, and the middle reinforced rib that preparation is consistent with the physical dimension of 3D hollow fabric suede through deck space;
2) by pre-buried for the middle reinforced rib in the step 1 3D hollow fabric suede that is inserted in deck space;
3) adopt composite material process planning by the middle reinforced rib in step 2 and 3D hollow fabric shaping as a whole.
In step 1 in high resistance to compression 3D hollow composite floor board manufacture method of the present invention, choosing 3D hollow fabric is select 3D hollow fabric according to required floor performance requirement.According to the 3D hollow fabric chosen, the material of middle reinforced rib, structure and distribution are designed simultaneously.
To the improvement of high resistance to compression 3D hollow composite floor board manufacture method, surface finish, deburring, chamfered adopt acetone to clean it are carried out to the middle reinforced rib in step 1.In this manufacture method step 1, deburring and chamfered are carried out to middle reinforced rib, make reinforcing rib more easily the pre-buried 3D hollow fabric suede that is inserted in deck space; Effectively can improve the surface roughness of middle reinforced rib to middle reinforced rib surface finish, and then improve interface bond strength between reinforcing rib and hollow fabric.The acetone adopted in this process of surface treatment is conventional products of the prior art, and its concrete composition and preparation method the present invention are not described in detail.
To the improvement of high resistance to compression 3D hollow composite floor board manufacture method, composite material process planning is the one in manual pasting forming process or vacuum diversion technique.Composite material process planning described in the present invention is common process method a kind of disclosed in prior art, and its processing step specifically comprises: die treatment, fabric cutting, fabric and auxiliary material laying, join glue, resin wetted/dipping, the spacing sizing of fabric, composites solidification and aft-loaded airfoil.
3D hollow composite floor board manufacture method described in the present invention, simple to operate, preparation cost is low; Adopt pre-buried middle reinforced rib and 3D hollow fabric integral shaping method, ensure boundary strength between middle reinforced rib and hollow composite material, avoid stratification in use.
The present invention is compared to existing common 3D hollow composite floor board, and its beneficial effect is:
1, the high resistance to compression 3D hollow composite floor board in the present invention, because the mechanical performance of traditional solid glass fiber compound material, carbon fibre composite both taken into account by its special construction, particularly compressive strength, realizes again the weight loss effect of 3D Hollow composite board, foam, honeycomb sandwich composite.
2, first middle reinforced rib is embedded in 3D hollow fabric suede in deck space by the present invention, then adopts composite material process planning integral shaping method to prepare high resistance to compression 3D hollow composite floor board; Wherein 3D hollow fabric structure is composite floor board general frame, gives the characteristic of composite floor board globality and loss of weight; Middle reinforced rib gives composite material high pressure resistance energy and other mechanical performance.The special construction of this high resistance to compression 3D hollow composite floor board had both taken into account the mechanical performance, particularly compressive strength of traditional solid glass fiber reinforced plastic/carbon steel, realized again the weight loss effect of 3D Hollow composite board/foam/honeycomb sandwich composite.
3, the present invention adopts pre-buried middle reinforced rib and 3D hollow fabric integral shaping method, ensures boundary strength between middle reinforced rib and hollow composite material, avoids stratification in use.
4, manufacture method of the present invention is adopted, simple to operate, preparation cost is low.
Accompanying drawing explanation
Fig. 1 is common 3D hollow interlayer composite material cross section structure schematic diagram.
Fig. 2 is height resistance to compression 3D hollow interlayer composite material cross section structure schematic diagram of the present invention.；
Fig. 3 is height resistance to compression 3D hollow interlayer composite material plan structure schematic diagram of the present invention.
Fig. 4 is 3D hollow fabric typical structure schematic diagram of the prior art.
In figure: 1-upper layer; 2-cutting optimal; 3-intermediate core layer; 4-suede is through deck gap; 5-middle reinforced rib.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
For making content of the present invention more become apparent, be further described below in conjunction with accompanying drawing 1-4 and detailed description of the invention.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
The present embodiment provides a kind of high resistance to compression 3D hollow composite floor board and manufacture method thereof, high resistance to compression 3D hollow composite floor board, comprises the 3D hollow fabric of formation 3D hollow composite floor board general frame and is arranged on the middle reinforced rib of 3D hollow fabric suede in deck space; The physical dimension of middle reinforced rib is consistent with the physical dimension of 3D hollow fabric suede through deck space.
3D hollow fabric in the present embodiment 1, adopt the 3D alkali-free glass fibre hollow fabric that 18mm is thick, this 3D alkali-free glass fibre hollow fabric is reinforcing material precast body, as the general frame of high resistance to compression 3D hollow composite floor board; The material of middle reinforced rib adopts solid glass fibrous composite; And adopt epoxy resin as matrix material.Wherein 3D alkali-free glass fibre hollow fabric effect structure figure as shown in Figure 4.
Composite material process planning in the present embodiment 1 adopts manual pasting forming process of the prior art, by middle reinforced rib and 3D hollow fabric shaping as a whole.
High resistance to compression 3D hollow composite floor board manufacture method in the present embodiment 1, step is as follows:
1) cutting is of a size of long (1m) × wide (1m) × height (18mm) 3D alkali-free glass fibre hollow fabric, is numbered B; For the suede in above-mentioned 3D alkali-free glass fibre hollow fabric through deck void size, the middle reinforced rib of the solid glass fibrous composite of long (1m) × wide (the 4mm) × height (18mm) of preparation.
2) surface finish, deburring, chamfered adopt acetone to clean it are carried out to the middle reinforced rib in step 1; Middle reinforced rib after surfacing is embedded in 3D alkali-free glass fibre hollow fabric suede in deck space; Wherein, middle reinforced rib quantity is 16, and middle reinforced rib is evenly distributed on 3D alkali-free glass fibre hollow fabric suede in deck space.
3) adopt composite material process planning by the middle reinforced rib in step 2 and 3D alkali-free glass fibre hollow fabric shaping as a whole; Concrete moulding process step is: the first step, takes acetone and release agent to process to the flat plate mold surface adopted in this moulding process; Second step, mixes epoxy resin with curing compound; 3rd step, adopts hand to stick with paste technique the 3D alkali-free glass fibre hollow fabric being embedded with middle reinforced rib and realizes epoxy resin soaking into and solidifying it.
In order to the performance of the common 3D hollow composite floor board and pre-buried reinforcing rib height resistance to compression 3D Hollow composite board that contrast not pre-buried reinforcing rib, the preparation process that the present embodiment illustrates common 3D hollow composite floor board is as follows:
1) cutting is of a size of long (1m) × wide (1m) × height (18mm) 3D alkali-free glass fibre hollow fabric, is numbered A;
2) adopt hand paste technique to realize resin soak into the 3D alkali-free glass fibre hollow fabric being numbered A and solidify.
Composite material compressive strength test bars is prepared after the composite plate cutting prepared by above-mentioned hollow fabric A and B.
Fig. 1 is the common 3D hollow composite floor board schematic diagram of not pre-buried reinforcing rib, and this common 3D hollow composite floor board comprises upper layer 1, cutting optimal 2 and intermediate core layer 3; Intermediate core layer 3 is connection two top layers and forms the Z-direction fiber of core.Fig. 2 and Fig. 3 is the high resistance to compression 3D hollow composite floor board schematic diagram of pre-buried reinforcing rib, and this high resistance to compression 3D hollow composite floor board comprises upper layer 1, cutting optimal 2, intermediate core layer 3 and is arranged on suede middle reinforced rib 5 in deck gap 4.
Respectively compressive strength and density measurement are carried out to said products A and B, the results are shown in Table 1.Result shows, and the 3D alkali-free glass fiber hollow fabric/epoxy systems composite material of 18mm is promoted to 22.5MPa in its compressive strength after reinforcing rib is pre-buried from 1.8MPa, add 11.5 times, and composite weight is only by 4.30kg/m
2be increased to 6.37kg/m
2.
Table 1: the performance of 18mm3D alkali-free glass fibre Hollow composite board before and after pre-buried reinforcing rib
| Sample number into spectrum | A group sample | B group sample |
| 3D vegetable raw materials | Alkali-free glass fibre | Alkali-free glass fibre |
| 3D fabric height | 18mm | 18mm |
| The pre-buried process of composite material | Not pre-buried middle reinforced rib | Pre-buried middle reinforced rib |
| Composite weight | 4.30kg/m 2 | 6.37kg/m 2 |
| Composite material compressive strength | 1.8MPa(GB/T1453-2005) | 22.5MPa(GB/T1453-2005) |
Embodiment 2
Substantially the same manner as Example 1, difference is: reinforcing material precast body is 20mm3D carbon fiber hollow fabric, and middle reinforced rib material is carbon fibre composite and reinforcing rib quantity is 32.
High resistance to compression 3D hollow composite floor board manufacture method in the present embodiment 2, step is as follows:
1) cutting is of a size of long (1m) × wide (1m) × height (20) 3D carbon fiber hollow fabric, be numbered D, for the suede in above-mentioned 3D carbon fiber hollow fabric through deck void size, the middle reinforced rib of the carbon fibre composite of long (1m) × wide (the 4mm) × height (20mm) of preparation.
2) surface finish, deburring, chamfered adopt acetone to clean it are carried out to the middle reinforced rib in step 1; Middle reinforced rib after surfacing is embedded in 3D carbon fiber hollow fabric suede in deck space; Wherein, middle reinforced rib quantity is 32, and middle reinforced rib is evenly distributed on 3D carbon fiber hollow fabric suede in deck space.
3) adopt composite material process planning by the middle reinforced rib in step 2 and 3D carbon fiber hollow fabric shaping as a whole; Concrete moulding process step is: the first step, takes acetone and release agent to process to the flat plate mold surface adopted in this moulding process; Second step, mixes epoxy resin with curing compound; 3rd step, adopts hand to stick with paste technique the 3D carbon fiber hollow fabric being embedded with middle reinforced rib and realizes epoxy resin soaking into and solidifying it.
In order to the performance of the common 3D hollow composite floor board and pre-buried reinforcing rib height resistance to compression 3D Hollow composite board that contrast not pre-buried reinforcing rib, the preparation process that the present embodiment illustrates common 3D hollow composite floor board is as follows:
1) cutting is of a size of long (1m) × wide (1m) × height (18mm) 3D carbon fiber hollow fabric, is numbered C;
2) adopt hand paste technique to realize resin soak into the 3D carbon fiber hollow fabric being numbered C and solidify.
Composite material compressive strength test bars is prepared after the composite plate cutting prepared by above-mentioned hollow fabric C and D.
Fig. 1 is the common 3D hollow composite floor board schematic diagram of not pre-buried reinforcing rib, Fig. 2 and Fig. 3 is the high resistance to compression 3D hollow composite floor board schematic diagram of pre-buried reinforcing rib.Respectively compressive strength and density measurement are carried out to said products C and D, the results are shown in Table 2.Result shows, and the thick 3D carbon fiber hollow fabric/epoxy systems composite material of 20mm is promoted to 78.6MPa in its compressive strength after reinforcing rib is pre-buried from 1.7MPa, add 45 times, and composite weight is only by 4.14kg/m
2be increased to 7.98kg/m
2.
Table 2: the performance of 20mm thick 3D carbon fiber Hollow composite board before and after pre-buried reinforcing rib
| Sample number into spectrum | C group sample | D group sample |
| 3D vegetable raw materials | T300 carbon fiber | T300 carbon fiber |
| 3D fabric height | 20mm | 20mm |
| The pre-buried process of composite material | Not pre-buried reinforcing rib | Pre-buried reinforcing rib |
| Composite weight | 4.14kg/m 2 | 7.98kg/m 2 |
| Composite material compressive strength | 1.7MPa(GB/T1453-2005) | 78.6MPa(GB/T1453-2005) |
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (7)
1. a high resistance to compression 3D hollow composite floor board, is characterized in that, comprises the 3D hollow fabric of formation 3D hollow composite floor board general frame and is arranged on the middle reinforced rib that be no less than one of 3D hollow fabric suede in deck space.
2. high resistance to compression 3D hollow composite floor board as claimed in claim 1, is characterized in that, the uniform 3D hollow fabric suede that is arranged on of middle reinforced rib is in deck space.
3. high resistance to compression 3D hollow composite floor board as claimed in claim 1, is characterized in that, 3D hollow fabric is one in glass fiber hollow fabric, carbon fiber hollow fabric, aramid fiber hollow fabric or glass fiber and carbon fiber hybrid hollow fabric.
4. high resistance to compression 3D hollow composite floor board as claimed in claim 1, it is characterized in that, middle reinforced rib is be embedded in the composite material of 3D hollow fabric suede in deck space, and its material is have the one in the solid glass fibrous composite of stronger compressive strength, carbon fibre composite or aramid fiber reinforced composite.
5. the high resistance to compression 3D hollow composite floor board manufacture method as described in claim 1-4, is characterized in that, comprise the steps:
1) 3D hollow fabric is chosen, and the middle reinforced rib that preparation is consistent with the physical dimension of 3D hollow fabric suede through deck space;
2) by pre-buried for the middle reinforced rib in the step 1 3D hollow fabric suede that is inserted in deck space;
3) adopt composite material process planning by the middle reinforced rib in step 2 and 3D hollow fabric shaping as a whole.
6. high resistance to compression 3D hollow composite floor board manufacture method as claimed in claim 5, is characterized in that, carries out surface finish, deburring, chamfered adopt acetone to clean it to the middle reinforced rib in step 1.
7. high resistance to compression 3D hollow composite floor board manufacture method as claimed in claim 5, is characterized in that, composite material process planning is the one in manual pasting forming process or vacuum diversion technique.
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| CN106476828A (en) * | 2016-10-17 | 2017-03-08 | 中车南京浦镇车辆有限公司 | A kind of 3D textile floor installation method used for rail vehicle, 3D textile floor and preparation method thereof |
| CN109717082A (en) * | 2019-03-12 | 2019-05-07 | 柯严 | Pig warming backing plate and preparation method thereof |
| 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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| CN109717082A (en) * | 2019-03-12 | 2019-05-07 | 柯严 | Pig warming backing plate and preparation method thereof |
| 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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