CN111958886B - Universal carbon foam composite material die with high yield and preparation method thereof - Google Patents
Universal carbon foam composite material die with high yield and preparation method thereof Download PDFInfo
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- CN111958886B CN111958886B CN202010680875.6A CN202010680875A CN111958886B CN 111958886 B CN111958886 B CN 111958886B CN 202010680875 A CN202010680875 A CN 202010680875A CN 111958886 B CN111958886 B CN 111958886B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000835 fiber Substances 0.000 claims description 100
- 239000010410 layer Substances 0.000 claims description 58
- 239000004744 fabric Substances 0.000 claims description 45
- 239000000853 adhesive Substances 0.000 claims description 24
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 239000012790 adhesive layer Substances 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 239000011159 matrix material Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 6
- 229910052799 carbon Inorganic materials 0.000 claims 6
- 239000006260 foam Substances 0.000 claims 6
- 238000004519 manufacturing process Methods 0.000 claims 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3807—Resin-bonded materials, e.g. inorganic particles
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C2033/385—Manufacturing moulds, e.g. shaping the mould surface by machining by laminating a plurality of layers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a universal carbon foam composite material die with high yield and a preparation method thereof, and relates to the technical field of composite material forming dies. The problem that the skin of the composite material die is easy to deform on the arc contact surface with the height difference is greatly relieved through the scheme, the service life of the composite material die is prolonged, and the yield of products is improved.
Description
Technical Field
The invention relates to the field of novel composite materials, in particular to a novel carbon foam composite material die capable of realizing universal type and high yield, and a preparation method and a preparation process of the carbon foam composite material die.
Background
Advanced composite materials have been rapidly developed due to their excellent properties and have become essential materials in the aerospace field. The widespread use of composite materials requires a continuous reduction in the cost of the product on the basis of ensuring a high-quality structure of the composite material, of which approximately 75% originates from the molding process.
The Composite material mould (Composite firing) is widely applied to the fields of subway carriages, fan blades and the like, the existing Composite material mould mostly adopts gypsum, lumbering and other materials, and compared with an alloy steel mould, the Composite material mould made of the material has the advantages that the cost is greatly reduced, the matching degree of the thermal expansion coefficient of the Composite material mould is poor, and the performance of the prepared product is general.
In order to improve the matching degree of the thermal expansion coefficient of the composite material mold, a composite material mold based on carbon foam is proposed in the industry in recent years, the shape of the existing carbon foam composite material mold is not limited to a conventional plane, but an arc-shaped surface with a height difference exists, an adhesive needs to be coated on the arc-shaped surface with the height difference in the preparation process of the carbon foam composite material, and the skin needs to be continuously paved. The different thicknesses of the bonding layers lead to different bonding strengths of the skin and the carbon foam, and particularly, the different thicknesses of the bonding layers lead to different expansion coefficients of the skin and the carbon foam when the temperature of the composite material mold changes, so that the deformation process of the skin is easily aggravated, and the service life of the carbon foam composite material mold is greatly shortened.
Disclosure of Invention
The invention aims to provide a universal carbon foam composite material die with high yield and a preparation method thereof, so as to solve the technical problem that the service life of the carbon foam composite material die is reduced due to the deformation process of a skin caused by different expansion coefficients of the skin and carbon foam when the temperature of the composite material die is changed due to inconsistent thickness of an adhesive layer.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a preparation method of a universal carbon foam composite material with high yield comprises the following steps:
obtaining a carbon foam mold matrix;
preparing an arc contact surface of the carbon foam mold matrix;
obtaining a pre-soaked first skin fiber bundle, winding the first skin fiber bundle on an arc-shaped contact surface along the equal height direction, and forming a skin bonding bottom layer on the arc-shaped contact surface;
coating an adhesive on the skin bonding bottom layer to form a bonding layer, and paving a second skin fiber fabric on the bonding layer from low to high;
and (5) carrying out high-temperature curing treatment to obtain the carbon foam composite material mold.
Further, the density of the carbon foam mold matrix is 0.2g-0.8g/cm3, and the compression strength of the carbon foam mold matrix is at least 1.5 Mpa.
Further, the step of preparing the arc-shaped contact surface of the carbon foam mold base body comprises the following steps:
the cutting obtains an arcuate contact bottom surface.
And cutting the equal-height grooves on the arc-shaped contact bottom surface along the equal-height direction to form an arc-shaped contact surface comprising a plurality of equal-height grooves.
Further, the groove width of the equal-height groove is larger than the diameter of the fiber filaments of the first skin fiber bundle, and when the first skin fiber bundle is wound on the arc-shaped contact surface, the fiber filaments of the first skin fiber bundle are wound and contained in the equal-height groove.
Further, the step of winding the first skin fiber bundle on the arc-shaped contact surface along the equal height direction comprises the following steps:
and coating an adhesive on the arc-shaped contact bottom surface to form a pre-adhesive layer, wherein the pre-adhesive layer at least fills the equal-height grooves, and the first skin fiber bundle is wound on the pre-adhesive layer from bottom to top along the equal-height direction.
Further, the step of cutting the contour groove on the arc-shaped contact bottom surface along the contour direction comprises:
equal-height grooves are cut on the arc-shaped contact bottom surface along the equal-height direction through a cutter head, and the equal-height grooves are arranged at equal intervals.
Further, the second cover fiber fabric is a twill fabric layer and/or a satin fabric layer.
Further, the thickness of a skin bonding bottom layer formed by winding the first skin fiber bundle is less than 5 mm; the thickness of the second skin fiber fabric paved on the bonding layer is 5mm-20 mm.
Further, the step of laying the second skin fiber fabric on the adhesive layer from low to high comprises:
pre-soaking and molding the skin fiber fabric unit;
paving and pasting the pre-impregnated skin fiber fabric unit on the bonding layer from low to high;
and rolling and compacting the skin fiber fabric unit on the bonding layer from a low direction to a high direction in a single-side rolling mode, and enabling the skin fiber fabric unit to be in contact with the first skin fiber bundle at the bottom bonding layer of the skin at the bottom.
The invention also provides a universal carbon foam composite material die with high yield, which is prepared by any one of the methods.
The invention provides a universal preparation method of carbon foam composite material with high yield, which comprises the steps of arranging two layers of skin fiber fabrics on an arc-shaped contact surface in a grading manner, winding a first layer of skin fiber bundle on the arc-shaped contact surface along the equal height direction, ensuring the connection strength between the first skin fiber bundle and a carbon foam mold matrix, simultaneously winding the first skin fiber bundle on the arc-shaped contact surface along the equal height direction to form a rough skin bonding bottom layer, arranging fiber yarns of the skin bonding bottom layer in the equal height direction, coating adhesive on the skin bonding bottom layer, hanging the adhesive on the fiber yarns arranged in the equal height direction of the skin bonding layer, greatly relieving the process that the adhesive flows and gathers downwards along the arc-shaped contact surface, so that the thickness of the adhesive layer formed after the adhesive is cured is more uniform, and the connection uniformity of a second skin fiber fabric and the first skin fiber bundle is better, meanwhile, the second skin fiber fabric is bonded on the first skin fiber bundle, and compared with the method that the second skin fiber fabric is directly paved on the carbon foam mold base body, the bonding firmness degree is greatly improved, and the bonding layer thickness is uniform, so that the influence of expansion and contraction of the carbon foam on the mold skin and the carbon foam mold base body is more uniform in the process of large-range temperature change, and the skin deformation problem on the arc-shaped contact surface with the height difference of the composite material mold is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a general method for preparing a carbon foam composite material with high yield according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a general method for preparing a carbon foam composite material with high yield according to the second embodiment of the present invention;
FIG. 3 is a partial schematic view of a universal, high-yield carbon foam composite mold according to an embodiment of the invention;
fig. 4 is a partial schematic view of a universal, high-yield carbon foam composite mold according to the second embodiment of the present invention.
Icon: 10-carbon foam mold base; 11-a first skin fiber bundle; 12-a second cover fabric; 13-an adhesive layer; 14-soft logging; 15-arc contact surface; 16-equal height groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The technical problem to be solved by this embodiment is that the existing carbon foam composite mold shape is not limited to a conventional plane, but has an arc surface with a height difference, in the preparation process of the carbon foam composite material, an adhesive needs to be coated on the arc surface with the height difference and skin needs to be continuously laid, since the adhesive is usually in a flowable liquid state, and the process of laying the skin needs to take a long time, the thickness of the adhesive layer 13 formed by the adhesive is differentiated according to the height difference of the arc surface, and the adhesive layer 13 is thicker at the lower position of the arc surface due to the fact that the adhesive flows to the lower position. The inconsistent thickness of the bonding layer 13 causes different bonding strengths of the skin and the carbon foam, and particularly, the inconsistent thickness of the bonding layer 13 causes the deformation process of the skin to be easily aggravated due to the different expansion coefficients of the skin and the carbon foam when the temperature of the composite material mold changes, so that the service life of the carbon foam composite material mold is greatly reduced.
In order to solve the above technical problems, this embodiment provides a method for preparing a carbon foam composite material with high yield in a general manner, as shown in fig. 1, including the following steps:
s110: a carbon foam mold base 10 is obtained.
The density of the carbon foam mold matrix 10 is 0.2g-0.8g/cm3, and the compression strength of the carbon foam mold matrix 10 is at least 1.5 Mpa.
S120: the arcuate contact surface 15 of the carbon foam mold base 10 is prepared.
As shown in FIG. 3, in preparing the arcuate contact surface 15 of the carbon foam mold base 10, an arcuate contact base surface may be first cut into the carbon foam mold base 10, an equal height groove 16 may be cut in an equal height direction into the arcuate contact base surface, and finally the arcuate contact surface 15 may be obtained. The equal-height groove 16 can be used as a grain structure for limiting the first skin fiber bundle 11, firstly, the equal-height groove 16 can increase the friction force between the first skin fiber bundle 11 and the carbon foam mold, and the unevenness of a skin bonding bottom layer caused by deviation when the first skin fiber bundle 11 is wound and prepared is avoided; secondly, the equal-height groove 16 can also be used as a guide groove for equal-height winding of the first skin fiber bundle 11, so that accurate equal-height direction winding preparation of the first skin fiber bundle 11 is facilitated.
The step of cutting the contour grooves 16 in the contour direction on the curved contact bottom surface includes: equal-height grooves 16 are cut on the arc-shaped contact bottom surface along the equal-height direction by the cutter head, and the equal-height grooves 16 are arranged at equal intervals.
S130: and obtaining a pre-soaked first skin fiber bundle 11, winding the first skin fiber bundle 11 on the arc-shaped contact surface 15 along the equal height direction, and forming a skin bonding bottom layer on the arc-shaped contact surface 15.
The groove width of the equal-height groove 16 is larger than the fiber diameter of the first skin fiber bundle 11, and when the first skin fiber bundle 11 is wound on the arc-shaped contact surface 15, the fiber of the first skin fiber bundle 11 is wound and accommodated in the equal-height groove 16.
In order to further enhance the connection strength and connection stability between the first skin fiber bundle 11 and the carbon foam mold base 10, an adhesive may be coated on the arc-shaped contact bottom surface and a pre-adhesive layer may be formed, the pre-adhesive layer at least fills the equal-height grooves 16, and the first skin fiber bundle 11 is wound on the pre-adhesive layer from bottom to top in the equal-height direction.
The first skin fiber bundle 11 is a glass fiber bundle or a quartz fiber bundle or a carbon fiber bundle.
The thickness of the skin bonding bottom layer formed by winding the first skin fiber bundle 11 is less than 5 mm.
S140: and coating an adhesive on the skin bonding bottom layer to form an adhesive layer 13, and paving the second skin fiber fabric 12 on the adhesive layer 13 from low to high.
The adhesive layer 13 fills at least the winding gaps of the first skin fiber bundle 11 of the skin adhesive bottom layer.
The adhesive comprises high-temperature-resistant resin, and the high-temperature-resistant resin at least meets the 180-degree high-temperature curing molding condition.
The second fiber fabric covering 12 is a twill cloth layer and/or a satin cloth layer. The second skin fiber fabric 12 is a glass fiber cloth layer, a quartz glass fiber cloth layer or a carbon fiber cloth layer.
The thickness of the second skin fiber fabric 12 paved on the bonding layer 13 is 5mm-20 mm.
The step of laying the second skin fiber fabric 12 on the adhesive layer 13 from low to high comprises the following steps: pre-soaking and molding the skin fiber fabric unit; paving and pasting the pre-impregnated skin fiber fabric unit on the bonding layer 13 from low to high; and (3) the skin fiber fabric unit is pressed on the bonding layer 13 by single-side rolling from the low direction to the high direction, and the skin fiber fabric unit is contacted with the first skin fiber bundle 11 at the bottom bonding layer of the skin at the bottom.
S150: and (5) carrying out high-temperature curing treatment to obtain the carbon foam composite material mold.
The step of high temperature curing treatment further comprises a post-treatment step, and the post-treatment step comprises cooling treatment.
The invention provides a universal preparation method of carbon foam composite material with high yield, which is characterized in that two layers of skin fiber fabrics are arranged on an arc-shaped contact surface 15 in a grading manner, a first layer of skin fiber fabric bundle is wound on the arc-shaped contact surface 15 along the equal height direction, the connection strength between the first skin fiber bundle 11 and a carbon foam mold matrix 10 is ensured, meanwhile, the first skin fiber bundle 11 is wound on the arc-shaped contact surface 15 along the equal height direction to form a rough skin bonding bottom layer, the fiber wire arrangement of the skin bonding bottom layer is also arranged in the equal height direction, therefore, when the adhesive is coated on the skin bonding bottom layer, the adhesive can be hung on the fiber wires arranged in the equal height direction of the skin bonding layer 13, the process that the adhesive flows and gathers downwards along the arc-shaped contact surface 15 is greatly relieved, and the thickness of the bonding layer 13 formed after the adhesive is solidified is more uniform, the uniformity of being connected of second covering fabric 12 and first covering tow 11 is also better, and second covering fabric 12 bonds on first covering tow 11 simultaneously, for directly paving pasting on carbon foam mould base member 10, the firm degree of bonding improves by a wide margin, and because adhesive linkage 13 thickness pressure-sharing is unanimous, the influence that mould covering and carbon foam mould base member 10 received carbon foam expansion cold-contraction at the in-process that the temperature changes on a large scale is also more even, therefore the covering deformation problem on the arc contact surface 15 that has the difference in height at the combined material mould also greatly improves.
Example two
When the first skin fiber bundle 11 is wound and coated on the arc-shaped contact surface 15 of the carbon foam mold base 10, the connection firmness degree of the first skin fiber bundle 11 and the carbon foam mold base 10 is high, but because the thermal expansion coefficient of the carbon foam is high, the pressure of the carbon foam on the first skin fiber bundle 11 in a high-temperature environment is also high, the winding strength of the first skin fiber bundle 11 needs to be increased in order to ensure the connection firmness, and the winding strength of the first skin fiber bundle 11 needs to be reduced in order to reduce the pressure of the carbon foam mold base 10 on the first skin fiber bundle 11 in a hot environment, so that the control of the winding strength of the first skin fiber bundle 11 is difficult to grasp due to the contradiction.
In order to solve the above technical problems, this embodiment provides a method for preparing a universal carbon foam composite material with high yield, as shown in fig. 2, including the following steps:
s210: a carbon foam mold base 10 is obtained.
S220: preparing an arc-shaped contact surface 15 of the carbon foam mold base body 10, and paving soft fellings 14 on two sides of the carbon foam mold base body 10 corresponding to the arc-shaped contact surface 15, wherein the arrangement positions of the soft fellings 14 are shown in FIG. 4.
S230: obtaining a pre-soaked first skin fiber bundle 11, winding the first skin fiber bundle 11 on an arc-shaped contact surface 15 along the equal height direction, winding the first skin fiber at least on a soft fell 14, and forming a skin bonding bottom layer on the arc-shaped contact surface 15.
S240: and coating an adhesive on the skin bonding bottom layer to form an adhesive layer 13, and paving the second skin fiber fabric 12 on the adhesive layer 13 from low to high.
S250: and (5) carrying out high-temperature curing treatment to obtain the carbon foam composite material mold.
Through the scheme, when the first skin fiber bundle 11 is wound on the arc-shaped contact surface 15, the soft felling 14 at two sides of the carbon foam mold base body 10 is at least covered, and the expansion pressure of the carbon foam mold base body 10 on the first skin fiber bundle 11 in a high-temperature environment can be relieved through shaping of the soft felling 14.
Meanwhile, the soft felling 14 can also form good supports for two sides of the carbon foam mold base body 10, so that the carbon foam mold base body 10 is prevented from deforming under the winding pressure of the first skin fiber bundle 11.
Therefore, by providing the soft felling 14 on both sides of the carbon foam mold base body 10, the controllable winding pressure range when winding the first skin fiber bundle 11 is large, and the winding pressure can be set to be larger, because the soft felling 14 can offset a part of the pressure generated by the carbon foam mold base body 10 in a high-temperature environment.
EXAMPLE III
The invention also provides a universal carbon foam composite material die with high yield, which is prepared by the following carbon foam composite material die preparation method:
a carbon foam mold base 10 is obtained.
The arcuate contact surface 15 of the carbon foam mold base 10 is prepared.
And obtaining a pre-soaked first skin fiber bundle 11, winding the first skin fiber bundle 11 on the arc-shaped contact surface 15 along the equal height direction, and forming a skin bonding bottom layer on the arc-shaped contact surface 15.
And coating an adhesive on the skin bonding bottom layer to form an adhesive layer 13, and paving the second skin fiber fabric 12 on the adhesive layer 13 from low to high.
And (5) carrying out high-temperature curing treatment to obtain the carbon foam composite material mold.
The carbon foam composite die prepared by the process method has the advantages of high forming precision and good product yield.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (9)
1. The preparation method of the foam carbon composite material mold is characterized by comprising the following steps of:
obtaining a foam carbon mold matrix;
preparing an arc contact surface of a foam carbon mold base body, cutting to obtain an arc contact bottom surface, and cutting equal-height grooves on the arc contact bottom surface along equal-height directions to form an arc contact surface comprising a plurality of equal-height grooves;
obtaining a pre-soaked first skin fiber bundle, winding the first skin fiber bundle on an arc-shaped contact surface along the equal height direction, and forming a skin bonding bottom layer on the arc-shaped contact surface;
coating an adhesive on the skin bonding bottom layer to form a bonding layer, and paving a second skin fiber fabric on the bonding layer from low to high;
and (5) carrying out high-temperature curing treatment to obtain the foam carbon composite material mold.
2. The method of making a carbon foam composite mold as in claim 1, wherein the carbon foam mold matrix has a density of 0.2g to 0.8g/cm3And the compression strength of the foam carbon mold matrix is at least 1.5 MPa.
3. The method of making a mold of carbon foam composite according to claim 1, wherein the contour groove has a groove width greater than a filament diameter of the first skin fiber bundle, and wherein the filament diameter of the first skin fiber bundle is received in the contour groove when the first skin fiber bundle is wrapped around the arcuate contact surface.
4. The method for preparing the mold of carbon foam composite material according to claim 1, wherein the step of winding the first skin fiber bundle on the arc-shaped contact surface along the equal height direction comprises the steps of:
and coating an adhesive on the arc-shaped contact bottom surface to form a pre-adhesive layer, wherein the pre-adhesive layer at least fills the equal-height grooves, and the first skin fiber bundle is wound on the pre-adhesive layer from bottom to top along the equal-height direction.
5. The method of making a mold of carbon foam composite material as recited in claim 1, wherein the step of cutting contour grooves in a contour direction on the curved contact bottom surface comprises:
equal-height grooves are cut on the arc-shaped contact bottom surface along the equal-height direction through a cutter head, and the equal-height grooves are arranged at equal intervals.
6. The method for preparing the mold for preparing carbon foam composite material according to claim 1, wherein the second skin fiber fabric is a twill fabric layer and/or a satin fabric layer.
7. The method for preparing the mould for the foam carbon composite material according to claim 1, wherein the thickness of a skin bonding bottom layer formed by winding the first skin fiber bundles is less than 5 mm; the thickness of the second skin fiber fabric paved on the bonding layer is 5mm-20 mm.
8. The method for preparing the mold of the carbon foam composite material as claimed in claim 1, wherein the step of laying the second skin fiber fabric on the adhesive layer from low to high comprises the steps of:
pre-soaking and molding the skin fiber fabric unit;
paving and pasting the pre-impregnated skin fiber fabric unit on the bonding layer from low to high;
and rolling and compacting the skin fiber fabric unit on the bonding layer from a low direction to a high direction in a single-side rolling mode, and enabling the skin fiber fabric unit to be in contact with the first skin fiber bundle at the bottom bonding layer of the skin at the bottom.
9. A carbon foam composite mould comprising a mould produced by the method of any one of claims 1 to 8.
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| JP2019501047A (en) * | 2016-01-11 | 2019-01-17 | アセント エアロスペース リミテッド ライアビリティ カンパニー | Hybrid layup mold |
| CN107215039A (en) * | 2017-06-07 | 2017-09-29 | 国电联合动力技术有限公司 | A kind of core filled composite material and preparation method thereof |
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