CN114633493A - Novel magnetic-guidance interlayer particle-reinforced composite material and preparation method thereof - Google Patents
Novel magnetic-guidance interlayer particle-reinforced composite material and preparation method thereof Download PDFInfo
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- CN114633493A CN114633493A CN202210078444.1A CN202210078444A CN114633493A CN 114633493 A CN114633493 A CN 114633493A CN 202210078444 A CN202210078444 A CN 202210078444A CN 114633493 A CN114633493 A CN 114633493A
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- 239000011229 interlayer Substances 0.000 title claims abstract description 37
- 239000011208 reinforced composite material Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 99
- 239000010410 layer Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 3
- 238000007711 solidification Methods 0.000 claims abstract description 3
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- 239000004744 fabric Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 8
- 239000011265 semifinished product Substances 0.000 claims description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- 239000012783 reinforcing fiber Substances 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000009787 hand lay-up Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 229920005989 resin Polymers 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
- B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
- B29C70/025—Combinations of fibrous reinforcement and non-fibrous material with particular filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
Abstract
The invention discloses a novel magnetic guide interlayer particle reinforced composite material and a preparation method thereof, wherein the composite material is essentially a continuous fiber reinforced laminated plate composite material, the particle shape is a cylindrical particle with the length-diameter ratio larger than 1, and the particle needs to be selected from materials easily attracted by magnetic force. The magnetic guiding interlayer particle reinforced composite material is characterized in that particles are uniformly spread among each layer when a matrix is in a fluid state in the forming process, and an external magnetic field is applied to guide the arrangement of internal particles before solidification. The arrangement angle of the particles can be influenced by changing the direction of the magnetic field, the particles are arranged in the preset direction between layers, the particles in different directions can have certain properties of a targeted reinforced material, and the method can achieve better optimization effect than that only the particles are randomly suspended between the layers. By adjusting the direction of the magnetic field, the orientation of the particles can be adjusted, and the improvement of the material performance improvement direction is realized.
Description
Technical Field
The invention belongs to the field of composite material design and performance optimization, and relates to a novel magnetic guide interlayer particle reinforced composite material and a preparation method thereof.
Background
Composite materials generally refer to materials that have new performance advantages that are made from two or more different materials that are combined by chemical or physical means. A common composite material is a fiber-reinforced laminate structure material, which, as the name implies, is formed by stacking layers of fiber cloth and forming a tight laminate structure with a matrix, such as a resin or the like. Due to the substrate enrichment region formed between the layers of the material, the interlayer performance of the material is poor relative to the in-plane performance of the material, so that the improvement of the interlayer performance of the material by means is important research content.
Common interlayer toughening and reinforcing means include: toughening the matrix, toughening the Z-pin and toughening the interlayer. The interlayer toughening is widely applied to interlayer toughening of composite material laminated plates in recent years due to strong pertinence and small influence on the internal performance, and the basic idea of the method is to change an isotropic material which is originally weak between material layers into a composite reinforced material, so that the method has strong designability.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel magnetic-guidance interlayer particle reinforced composite material and a preparation method by utilizing the thought and means of an interlayer toughening method, and different properties of the composite material can be improved in a targeted manner by the method provided by the invention.
The invention is realized by the following steps:
the preparation method of the novel magnetic-guidance interlayer particle reinforced composite material is characterized in that interlayer particles are uniformly scattered among layers by utilizing the characteristic that a matrix is liquid when the layers are laid, and a magnetic field is applied from the outside immediately after the layers are laid to guide the arrangement direction of the particles, and the preparation method specifically comprises the following steps:
step one, fully crushing and grinding interlayer particles for later use;
step two, according to a wet hand lay-up forming process, mixing fiber cloth and a substrate, laying the fiber cloth and the substrate layer by layer according to a quasi-isotropic laying mode, and processing the step oneThe obtained interlaminar particles are uniformly spread between layers, and the content of the particle surface between each layer is 60g/m-2(ii) a Specifically, in the layering process, the matrix is constantly in a liquid state, interlayer particles are uniformly spread on fiber cloth soaked with the matrix, namely reinforced fibers, the next layer of reinforced fibers is covered, and the step is repeated until the layering is finished; in the laying process, the resin is in a liquid state at any time and has good fluidity, the cylindrical particles with the micron-sized to sub-millimeter-sized length-diameter ratio larger than 1 are uniformly paved on the main reinforced fiber cloth soaked with the resin, the next layer of main reinforced fiber cloth is covered, and the step is repeated until the laying is finished.
Step three, after the layering is finished, when the base body is still in a liquid state, placing the semi-finished product obtained in the step two between two ferrite magnets, wherein the positive pole and the negative pole of the two ferrite magnets are opposite to form a magnetic field area vertical to the surfaces of the ferrite magnets; before the resin is not cured, an external magnetic field is utilized to carry out magnetic guide operation on the material, meanwhile, the effect of changing the distribution direction of the particles is achieved by changing the direction of the magnetic induction lines, and the composite material with the particles filled between layers is obtained after the matrix is completely cured. Wherein the material of the particles is selected from substances which are easily attracted by magnetic force, such as iron-containing substances and the like. And the cylindrical particles themselves should not be longer than the monolayer thickness of the primary reinforcing fiber layer in the composite material in which they are added. The particle arrangement direction refers to an axis parallel to a generatrix of a cylindrical particle with a certain length.
And step four, placing the semi-finished product obtained in the step three in an environment box at 50 ℃ to heat and accelerate the curing of the semi-finished product.
Further, the fiber cloth is T300 two-way weaving plain cloth, and the matrix is E51 epoxy resin.
Furthermore, the thickness of the fiber cloth single layer is 0.2-0.5 mm.
Further, the interlaminar particles include the magnetic field influence material, the particles smash and grind the back and be the cylindrical micron order to submillimeter level granule that length-diameter ratio is greater than 1, granule generating line length is less than the biggest thickness of the individual layer of the reinforcing fiber who uses.
Further, the magnetic field is realized by the magnetic field of the magnet or the electromagnetic field generated by the electromagnetic coil.
Further, the uniform arrangement direction of the particles between the layers is changed by changing the magnetic guiding direction of the magnetic field region.
Further, the particle direction of the interlaminar particles refers to the spatial direction of an axis parallel to the particle generatrix, and the axis can be adjusted by changing the direction of the magnetic field.
Furthermore, in the forming process, when the matrix is in a fluid state, the particles are uniformly spread among each layer, an external magnetic field is applied to guide the arrangement of the particles in the layer before solidification, the arrangement angle of the particles can be influenced by changing the direction of the magnetic field, the particles are arranged in the preset direction among the layers, and the particles among the layers in different directions can enhance the performance of the material.
The beneficial effects of the invention and the prior art are as follows:
1. according to the invention, the original fragile interlayer region performance of the composite laminated board can be improved by filling particles between layers, and the purpose of strengthening and toughening can be achieved;
2. according to the invention, through selecting the material with proper particles and proper particle size, the material can be guided by a magnetic field to rotate in the material, and the arrangement mode in the particles is directly influenced from the outside, so that the original disordered particles have a certain distribution rule, and compared with the disordered enhancement of the random particles, the ordered particles have stronger pertinence in performance enhancement.
3. Because the distribution angle of the particles of the invention is related to the direction of the external magnetic field, and the angle of the particles has influence on the types of the main enhanced performance, the invention can be edited and controlled for improving the performance of the composite material, and has strong flexibility and designability.
Drawings
FIG. 1 is a schematic illustration of an example interlaminar particle distribution of the present invention;
FIG. 2 is a microscopic view of the side interlayer particles of a finished product of an example material of the present invention;
FIG. 3 is a Micro-CT scan of particles within a finished article of exemplary material of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the present invention is further described in detail by the following examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A novel magnetic guide interlayer particle reinforced composite material and a preparation method thereof comprise the following steps:
fully crushing and grinding cylindrical stainless steel particles with the original cutting size of 1mm and the section radius of 0.015mm, selecting a rotary cutter head crusher with the rotating speed of 10000r/min for processing for half an hour, wherein the diameter of a cutter edge is 0.1mm, and screening the particles with the length of less than 0.3mm by a microscope.
Step (2), using T300 two-way weaving plain cloth as main reinforcing fiber, using E51 epoxy resin as matrix, fully mixing dry cloth and resin according to a wet hand lay-up forming process, laying layer by layer, using a 100-mesh screen to uniformly lay the particles obtained by the step (1) between layers, wherein the content of the particle surface between each layer is 60g/m-2。
And (3) after the layering is finished, when the resin is still liquid, placing the semi-finished product obtained in the step (2) between two rectangular ferrite magnets, wherein the positive and negative electrodes of the two magnets are opposite to each other to form a magnetic field area vertical to the surfaces of the magnets.
And (4) heating the semi-finished product obtained in the step (3) in an environment box at 50 ℃ to accelerate the curing.
Comparative example 1
A functionally reinforced composite with interlaminar added particles was prepared as described in example 1, except that: and (4) directly entering the step (4) after the step (2) is finished without the step (3).
Comparative example 2
The composite preparation procedure was as described in example 1, except that: and (3) changing the step (1) into the step (2), canceling the operation of adding particles between layers in the step (2), only finishing gum dipping and layering of the dry cloth, and directly entering the step (4) to finish curing and forming.
Fig. 1 is a schematic diagram of the interlayer distribution of the particles under different treatment methods, wherein a is a schematic diagram of the particles aligned in the thickness direction of the material between the layers under the action of magnetic field guidance, the thickness direction is a direction perpendicular to the plane where the main reinforced fibers are located, namely, the z direction shown by coordinates, and B is a schematic diagram of the particles randomly distributed between the layers without magnetic field guidance.
FIG. 2 is a schematic representation of the distribution of the material-side particles of example 1 and comparative example 1, viewed under a microscope, A being a representation of the distribution of the particles of example 1, which particles can be seen to be distributed substantially through the thickness, as indicated by the 1-fold in the figure; b is a schematic representation of the distribution of particles without magnetic field treatment, randomly distributed and interlaminar, mostly presenting only a circular cross-section when viewed from the side, as indicated by 2 in the figure.
FIG. 3 is a local observation diagram of the real distribution of particles in example 1 and comparative example 1 after Micro-CT scanning, wherein A is the local real distribution of the particles in example 1, and the particles have obvious directionality and uniformity; b is the real distribution part of the particles which are not treated by the magnetic field, and the particles do not have obvious arrangement rules.
Table 1 shows the results of partial performance tests between example 1 and comparative examples 1 to 2
| Sample (I) | Interlaminar shear strength/MPa | Interlaminar type I fracture toughness/KJ.m-2 |
| Example 1 | 42.25 | 1.30 |
| Comparative example 1 | 38.49 | 0.80 |
| Comparative example 2 | 35.82 | 0.68 |
As can be seen from table 1, the interlaminar shear strength of the laminate samples prepared in example 1 of the present invention was significantly improved as compared with the samples of comparative examples 1 and 2 in which no particles were added and no particles were added but magnetic force guidance was not performed, and it can be seen from the analysis that the interlaminar shear strength of the material was improved by simply adding particles even without using magnetic force guidance, and it was found that when the particles were uniformly arranged in the thickness direction between the layers, a composite material having unidirectional reinforcement in the thickness direction was formed for the interlaminar portion, and when subjected to in-plane shear, the shear resistance was inevitably stronger than that of the material in which the particles were randomly distributed. The same rule can also be seen in the test result of the interlaminar I-type fracture toughness, the particles which are vertically distributed form an optimal bridging relation when the interlaminar cracks are opened, and new mechanical behaviors such as particle extraction, crack deflection guidance, local deformation limitation and the like are increased, so that the energy consumed by the interlayer crack propagation of the composite material is greatly improved. The fiber cloth referred to in the present invention is also a reinforcing fiber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. The preparation method of the novel magnetic-guidance interlayer particle reinforced composite material is characterized in that interlayer particles are uniformly scattered among layers by utilizing the characteristic that a matrix is liquid when the layers are laid, and a magnetic field is applied from the outside immediately after the layers are laid to guide the arrangement direction of the particles, and the preparation method specifically comprises the following steps:
step one, fully crushing and grinding interlayer particles for later use;
step two, according to the wet hand lay-up forming process, fiber cloth and a substrate are mixed and laid layer by layer according to a quasi-isotropic layer laying mode, interlayer particles obtained by the treatment in the step one are uniformly spread and spread among the layers, and the content of the particle surface between every two layers is 60g/m-2(ii) a Specifically, in the layering process, the matrix is constantly in a liquid state, particles among layers are uniformly spread on fiber cloth soaked in the matrix, the next layer of reinforced fibers is covered, and the step is repeated until the layering is finished;
step three, after the layering is finished, when the base body is still in a liquid state, placing the semi-finished product obtained in the step two between two ferrite magnets, wherein the positive pole and the negative pole of the two ferrite magnets are opposite to form a magnetic field area vertical to the surfaces of the ferrite magnets;
and step four, placing the semi-finished product obtained in the step three in an environment box at 50 ℃ to heat and accelerate the curing of the semi-finished product.
2. The method for preparing the novel magnetic-guidance interlayer particle-reinforced composite material as claimed in claim 1, wherein the fiber cloth is T300 two-way woven plain cloth, and the matrix is E51 epoxy resin.
3. The preparation method of the novel magnetic-guidance interlayer particle-reinforced composite material as claimed in claim 1, wherein the thickness of the fiber cloth single layer is 0.2-0.5 mm.
4. The preparation method of the novel magnetic-guidance interlayer particle reinforced composite material according to claim 1, wherein the interlayer particles comprise a material influenced by a magnetic field, the particles are crushed and ground into cylindrical micron-scale to submillimeter-scale particles with the length-diameter ratio larger than 1, and the length of a particle bus is smaller than the maximum thickness of a single layer of the used reinforcing fibers.
5. The method for preparing the novel magnetic-guidance interlayer particle-reinforced composite material as claimed in claim 1, wherein the magnetic field is realized by the magnetic field of a magnet itself or by an electromagnetic field generated by an electromagnetic coil.
6. The method for preparing the novel magnetic-guidance interlayer particle-reinforced composite material as claimed in claim 1, wherein the uniform arrangement direction of the interlayer particles is changed by changing the magnetic guidance direction of the magnetic field region.
7. The method for preparing a novel magnetic-guidance interlayer particle-reinforced composite material as claimed in claim 1, wherein the particle direction of the interlayer particles is the spatial direction of an axis parallel to the particle generatrix, and the axis can be adjusted by changing the direction of the magnetic field.
8. The method for preparing the novel magnetic-guidance interlayer particle-reinforced composite material as claimed in claim 1, wherein the particles are uniformly spread between each layer when the matrix is in a fluid state during the molding process, and the magnetic field is applied to guide the arrangement of the particles inside before the solidification, so that the arrangement angle of the particles can be influenced by changing the direction of the magnetic field, the particles are arranged in a predetermined direction between the layers, and the particles between the layers in different directions can enhance the performance of the material.
9. The composite material prepared by the preparation method of the novel magnetic-guidance interlayer particle reinforced composite material according to any one of claims 1 to 8.
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| CN202210078444.1A CN114633493A (en) | 2022-01-21 | 2022-01-21 | Novel magnetic-guidance interlayer particle-reinforced composite material and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762686A (en) * | 2005-11-14 | 2006-04-26 | 浙江大学 | Self-reinforced interlayer shearing intensity resin base fiber reinforced composite material preparation method |
| JP2011012093A (en) * | 2009-06-30 | 2011-01-20 | Mitsubishi Plastics Inc | Composite resin material and beam structure member using the same |
| EP2371522A1 (en) * | 2010-03-29 | 2011-10-05 | ETH Zurich | Method for the production of composite materials using magnetic nano-particles to orient reinforcing particles and reinforced materials obtained using the method |
| CN109736076A (en) * | 2019-01-14 | 2019-05-10 | 桂林电子科技大学 | It is a kind of for enhancing the intercalation material and preparation method thereof of continuous fiber resin base composite plate interlayer performance |
| CN110561779A (en) * | 2019-09-20 | 2019-12-13 | 山东非金属材料研究所 | Method for enhancing mechanical property between fiber resin matrix composite layers by magnetic field oriented carbon nano tube |
| US20200024795A1 (en) * | 2017-03-23 | 2020-01-23 | Boston Materials, Inc. | Fiber-reinforced composites, methods therefor, and articles comprising the same |
-
2022
- 2022-01-21 CN CN202210078444.1A patent/CN114633493A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762686A (en) * | 2005-11-14 | 2006-04-26 | 浙江大学 | Self-reinforced interlayer shearing intensity resin base fiber reinforced composite material preparation method |
| JP2011012093A (en) * | 2009-06-30 | 2011-01-20 | Mitsubishi Plastics Inc | Composite resin material and beam structure member using the same |
| EP2371522A1 (en) * | 2010-03-29 | 2011-10-05 | ETH Zurich | Method for the production of composite materials using magnetic nano-particles to orient reinforcing particles and reinforced materials obtained using the method |
| US20200024795A1 (en) * | 2017-03-23 | 2020-01-23 | Boston Materials, Inc. | Fiber-reinforced composites, methods therefor, and articles comprising the same |
| CN109736076A (en) * | 2019-01-14 | 2019-05-10 | 桂林电子科技大学 | It is a kind of for enhancing the intercalation material and preparation method thereof of continuous fiber resin base composite plate interlayer performance |
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Application publication date: 20220617 |