CN113665138A - Layering method of continuous fibers in baffle with flanging and baffle with flanging - Google Patents

Layering method of continuous fibers in baffle with flanging and baffle with flanging Download PDF

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Publication number
CN113665138A
CN113665138A CN202110784771.4A CN202110784771A CN113665138A CN 113665138 A CN113665138 A CN 113665138A CN 202110784771 A CN202110784771 A CN 202110784771A CN 113665138 A CN113665138 A CN 113665138A
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China
Prior art keywords
baffle
flanging
fibers
layer
fiber
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Pending
Application number
CN202110784771.4A
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Chinese (zh)
Inventor
刘永杰
王智文
栗娜
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Beijing Automotive Research Institute Co Ltd
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Beijing Automotive Research Institute Co Ltd
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Priority to CN202110784771.4A priority Critical patent/CN113665138A/en
Publication of CN113665138A publication Critical patent/CN113665138A/en
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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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/083—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
    • B29C70/228—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being stacked in parallel layers with fibres of adjacent layers crossing at substantial angles
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2223/00—Use of polyalkenes or derivatives thereof as reinforcement
    • B29K2223/04—Polymers of ethylene
    • B29K2223/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2277/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as reinforcement
    • B29K2277/10—Aromatic polyamides [Polyaramides] or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2307/00—Use of elements other than metals as reinforcement
    • B29K2307/04—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a layering method of continuous fibers in a baffle plate with a flanging and the baffle plate with the flanging, wherein the method comprises the following steps: laying a reinforcing layer on at least part of the surface of the baffle body layer with the flanging, laying first fibers in the baffle body layer with the flanging, laying second fibers in the reinforcing layer, wherein the thickness of the reinforcing layer is smaller than that of the baffle body layer with the flanging, and the modulus of the second fibers is larger than that of the first fibers. According to the invention, the reinforcing layer of the relatively high-modulus fiber is laid on the surface of the baffle body layer laid with the relatively low-medium modulus fiber, so that a multi-element hybrid symmetrical coating crossed framework structure with a modulus difference is formed, and the baffle with the flanging can reduce or avoid the generation and expansion of surface microcracks caused by repeated deformation of the baffle with the flanging when bearing a cyclic load, thereby solving the problems of integral asymmetry of a balanced layer structure and integral warping caused by a fiber resin coupling effect under the condition of not changing the layer of the main body.

Description

Layering method of continuous fibers in baffle with flanging and baffle with flanging
Technical Field
The invention belongs to the technical field of continuous fiber composite material layering structure forming, and particularly relates to a layering method of continuous fibers in a baffle with a flanging and the baffle with the flanging.
Background
The continuous fiber composite material is widely applied to various industries due to the characteristics of excellent specific strength, specific rigidity, designability, fatigue performance, corrosion resistance, vibration reduction, noise reduction and the like, and the application of the continuous fiber composite material in the automobile field is also in a gradually expanding trend in recent years.
The continuous fiber composite material can be subjected to ply design according to the structural form and performance requirements due to the anisotropic characteristics of fiber angles, ply and the like, and the ply is required to be symmetrically designed in order to prevent deformation caused by internal stress generated by the difference of the thermal expansion coefficients of the fibers and the matrix.
The flanging clapboard is in a combined form of a fiber reinforced framework and a resin matrix, for a structure with a small flanging plate, in order to prevent the plate from being curled diagonally (single or 0/90 DEG orthogonal ply ratio is too much, the diagonal direction of the plate has no fiber support, and the matrix is seriously shrunk to cause the plate to be curled) (see fig. 1-2), meanwhile, the clapboard has certain torsion resistance requirement and edge opening connection requirement, generally requires to arrange a certain proportion of 45 DEG ply, comprehensively considers impact resistance, and is generally arranged at the surface position. However, due to the structural characteristics of the turned-up edge, the 45-degree layer cannot realize a middle-plane symmetrical structure (see fig. 3-5), and the whole warping of the part is aggravated (see fig. 6). Meanwhile, the layering angles of different layering sequence positions in the thickness direction are generally required to be within 3 degrees of deviation, so that theoretical deviation of all layering angles cannot be realized, and particularly, the paving precision cannot be guaranteed after 45-degree layering crosses layers.
At present, for the problem of 45-degree asymmetry of a flat plate structure with a narrow flanging, the main solution is to reduce the proportion of 45-degree paving layers, reduce the influence of asymmetric paving layers at the flanging position, or carry out shape correction and stress assembly after forming, and for the problem of stacking of orthogonal paving layers and asymmetric 45-degree paving layers, no solution is provided at present.
Firstly, the number of 45-degree layers is unchanged, the number of the integral layers is increased, the integral weight is increased, the partial performance margin is overlarge, and the requirement on installation space is increased; secondly, the number of overall layers is not changed, and the 45-degree layers are replaced by other layer angles, so that the performance in the torsion direction is lowered, the tensile property of an opening is poor, but the curling tendency of the flat plate position is increased (the whole is still warped).
The shaping after the shaping can increase certain frock cost and energy resource consumption, takes stress assembly because of the finished piece itself is the warpage state, and the forced correction easily produces the microcrack on the surface during the assembly (see figure 7), and when the load operating mode was complicated, the stress concentration position produced the destruction risk very big. Meanwhile, when the workpieces with the flanged structures are subjected to cyclic reciprocating load by the two methods, the edge end surface cracks are increased, and the delamination problem caused by easy degumming is not obviously improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a layering method of continuous fibers in a baffle with a flanging and the baffle with the flanging. The invention lays the reinforced layer of the relative high modulus fiber on the surface of the clapboard body layer paved with the relative middle-low modulus fiber, namely, a high-rigidity cladding type fiber framework structure is formed on the surface of a common fiber main body laying structure with relatively low and medium modulus, and a multi-element mixed symmetrical cladding crossed framework structure with modulus difference is formed, so that the baffle plate with the flanging can reduce or avoid the generation and expansion of surface microcracks caused by the repeated deformation of the baffle plate, therefore, under the condition of not changing the laying of the main body, the problem of integral warping caused by integral asymmetry of a balanced laying structure and fiber resin coupling effect is solved, surface microcracks caused by buckling assembly and loading of a workpiece and further caused damage risks are avoided or reduced, meanwhile, the problem that the product laying layer is changed to increase the weight or reduce the design performance due to the problem of preventing the warping is avoided.
To achieve the above objects, in one aspect of the present invention, a method of layering continuous fibers in a flanged baffle is provided. According to an embodiment of the invention, the method comprises: laying a reinforcing layer on at least part of the surface of the baffle body layer with the flanging, laying first fibers in the baffle body layer with the flanging, laying second fibers in the reinforcing layer, wherein the thickness of the reinforcing layer is smaller than that of the baffle body layer with the flanging, and the modulus of the second fibers is larger than that of the first fibers.
According to the layering method of the continuous fibers in the baffle with the flanging, provided by the embodiment of the invention, the reinforcing layer of the relatively high-modulus fibers is paved on the surface of the baffle body layer paved with the relatively low-medium modulus fibers, namely, a high-rigidity cladding type fiber framework structure is formed on the surface of a common fiber main body laying structure with relatively low and medium modulus, and a multi-element mixed symmetrical cladding crossed framework structure with modulus difference is formed, so that the baffle plate with the flanging can reduce or avoid the generation and expansion of surface microcracks caused by the repeated deformation of the baffle plate, therefore, under the condition of not changing the laying of the main body, the problem of integral warping caused by integral asymmetry of a balanced laying structure and fiber resin coupling effect is solved, surface microcracks caused by buckling assembly and loading of a workpiece and further caused damage risks are avoided or reduced, meanwhile, the problem that the product laying layer is changed to increase the weight or reduce the design performance due to the problem of preventing the warping is avoided. Therefore, the layering method greatly reduces the warping deformation of the layering structure, does not influence the performance requirement of the layering structure, and does not need to carry out secondary development on the tool.
In addition, the layering method of the continuous fibers in the baffle with the flanged edge according to the embodiment of the invention can also have the following additional technical characteristics:
in some embodiments of the invention, the ratio of the modulus of the second fiber to the modulus of the first fiber is not less than 3.
In some embodiments of the invention, the ratio of the thickness of the reinforcement layer to the thickness of the flanged separator body layer is not less than 1/4.
In some embodiments of the invention, the first fibers are selected from at least one of glass fibers, basalt fibers, aramid fibers, and polyethylene fibers.
In some embodiments of the invention, the second fibers are carbon fibers.
In some embodiments of the invention, the laying area of the reinforcing layer on the surface of the baffle body layer with the flange is 50-100%.
In some embodiments of the invention, the number of layers in which the second fibers are laid in the reinforcement layer is 1 to 5.
In some embodiments of the invention, the laying angle α of the second fibers in the reinforcing layer is 45 °.
In some embodiments of the invention, the first fibers in the baffle body layer with flanges are designed as [ +45 °/0 °/90 ° ] s.
In yet another aspect of the present invention, a baffle with a cuff is provided. According to the embodiment of the invention, the baffle with the flanging is obtained by adopting the layering method in the embodiment. Therefore, the baffle plate with the flanging, which is obtained by the laying method, can reduce or avoid the generation and the expansion of surface microcracks caused by repeated deformation of the baffle plate when bearing cyclic load, the warping deformation of the laying structure is greatly reduced, the performance requirement of the laying structure is not influenced, and the tool does not need to be developed for the second time.
In a third aspect of the present invention, an automobile is provided. According to an embodiment of the invention, the automobile is provided with the baffle with the flanging, which is described in the embodiment. From this, the area turn-ups baffle that above-mentioned car has can reduce or avoid self to warp repeatedly when bearing cyclic load and lead to surperficial microcrack production and extension, and layer structure warp deformation reduces by a wide margin, does not influence layer structure performance demand, need not to carry out secondary development to the frock, has further satisfied consumer's demand.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic illustration of fiber and matrix shrinkage in the prior art;
FIG. 2 is a schematic illustration of prior art fiber to matrix coupling resulting in warpage;
FIG. 3 is a schematic illustration of a prior art square angle of the ply angle of each layer of fibers resulting in a face asymmetry in the product;
FIG. 4 is a schematic view of a prior art + -45 deg. ply turnup back edge angulation;
FIG. 5 is a schematic diagram of an actually required angle of a +/-45-degree ply flanging in the prior art;
FIG. 6 is a schematic illustration of warpage caused by asymmetric coupling of superimposed flanges in a prior art flat panel;
FIG. 7 is a prior art schematic representation of stress assembly and loaded buckling resulting in surface microcracking;
FIG. 8 is a schematic view of a baffle with a cuff of an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a baffle with a cuff in accordance with an embodiment of the present invention;
FIG. 10 is an exploded view of a baffle with a cuff in accordance with an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In one aspect of the invention, a method of layering continuous fibers in a baffle with a cuff is provided. Referring to fig. 8-10, the method includes, in accordance with an embodiment of the present invention: the manufacturing method comprises the steps that a reinforcing layer 2 is laid on at least part of the surface of a baffle body layer 1 with a flanging, first fibers (not shown in the figure) are laid in the baffle body layer 1 with the flanging, second fibers 3 are laid in the reinforcing layer 2, the thickness of the reinforcing layer 2 is smaller than that of the baffle body layer 1 with the flanging, and the modulus of the second fibers 3 is larger than that of the first fibers.
According to the layering method of the continuous fibers in the baffle with the flanging, provided by the embodiment of the invention, the reinforcing layer of the relatively high-modulus fibers is paved on the surface of the baffle body layer paved with the relatively low-medium modulus fibers, namely, a high-rigidity cladding type fiber framework structure is formed on the surface of a common fiber main body laying structure with relatively low and medium modulus, and a multi-element mixed symmetrical cladding crossed framework structure with modulus difference is formed, so that the baffle plate with the flanging can reduce or avoid the generation and expansion of surface microcracks caused by the repeated deformation of the baffle plate, therefore, under the condition of not changing the laying of the main body, the problem of integral warping caused by integral asymmetry of a balanced laying structure and fiber resin coupling effect is solved, surface microcracks caused by buckling assembly and loading of a workpiece and further caused damage risks are avoided or reduced, meanwhile, the problem that the product laying layer is changed to increase the weight or reduce the design performance due to the problem of preventing the warping is avoided. Therefore, the layering method greatly reduces the warping deformation of the layering structure, does not influence the performance requirement of the layering structure, and does not need to carry out secondary development on the tool.
According to an embodiment of the present invention, a ratio of the modulus of the second fibers to the modulus of the first fibers is not less than 3, so that the high-rigidity cladding fiber skeleton structure is further clad on the surface of the separator body layer on which the relatively low-and-medium-modulus fibers are laid, and a multi-hybrid symmetrical cladding crossed skeleton structure with a modulus difference is formed, which can reduce or avoid the generation and expansion of surface microcracks caused by repeated deformation of the structure when the structure bears cyclic load. The inventor finds that if the ratio of the modulus of the second fiber to the modulus of the first fiber is less than 3, the modulus of the second fiber is too close to the modulus of the first fiber, and a multi-element hybrid symmetrical coating crossed framework structure with enough modulus difference cannot be formed, so that the baffle with the flanging cannot effectively reduce or avoid the generation and expansion of surface microcracks caused by repeated deformation of the baffle with the flanging when the baffle bears cyclic load.
In the embodiment of the present invention, the specific value of the modulus of the second fiber is not particularly limited as long as the ratio of the modulus of the second fiber to the modulus of the first fiber is not less than 3, and a person skilled in the art can optionally select the specific value of the modulus of the second fiber according to the specific value of the modulus of the first fiber.
According to another embodiment of the invention, the ratio of the thickness of the reinforcement layer to the thickness of the baffle body layer with the flange is not less than 1/4, so that a high-rigidity reinforcement layer with a certain thickness is formed on the surface of the baffle body layer paved with relatively medium-low modulus fibers, and further the baffle with the flange can reduce or avoid the generation and expansion of surface microcracks caused by the repeated deformation of the baffle with the flange when bearing cyclic load. The inventor finds that if the ratio of the thickness of the reinforcing layer to the thickness of the baffle body layer with the flanging is smaller than 1/4, the reinforcing layer with high rigidity is formed on the surface of the baffle body layer paved with the fibers with relatively low and medium modulus, so that the baffle with the flanging cannot effectively reduce or avoid the generation and expansion of surface microcracks caused by repeated deformation of the baffle with the flanging when the baffle bears cyclic load.
It should be noted that, in the embodiment of the present invention, the specific value of the thickness of the reinforcement layer is not particularly limited as long as the ratio of the thickness of the reinforcement layer to the thickness of the flanged separator body layer is not less than 1/4, and a person skilled in the art can optionally select the specific value of the thickness of the reinforcement layer according to the specific value of the thickness of the flanged separator body layer.
In the embodiment of the present invention, the specific kind of the first fiber is not particularly limited, and may be arbitrarily selected by those skilled in the art according to actual needs, and as a preferable embodiment, the first fiber is at least one selected from glass fiber, basalt fiber, aramid fiber, and polyethylene fiber.
In the embodiment of the present invention, the specific kind of the second fiber is not particularly limited, and may be arbitrarily selected by a person skilled in the art according to actual needs, and as a preferable embodiment, the second fiber is a carbon fiber.
According to another specific embodiment of the invention, the laying area of the reinforcement layer on the surface of the baffle body layer with the flange is 50% -100%, so that a high-rigidity coated fiber skeleton structure with a sufficient area is further coated on the surface of the baffle body layer with the relatively low-medium modulus fiber, and the baffle with the flange can reduce or avoid the generation and expansion of surface microcracks caused by the repeated deformation of the baffle with the flange when bearing cyclic load. The inventor finds that if the laying area of the reinforcing layer on the surface of the baffle body layer with the flanging is smaller than 50%, the laying area of the reinforcing layer on the surface of the baffle body layer with the flanging is too small, and the baffle with the flanging can not effectively reduce or avoid the generation and expansion of surface microcracks caused by repeated deformation of the baffle with the flanging when bearing cyclic load.
According to another embodiment of the present invention, referring to fig. 10, the second fibers are laid in the reinforcing layer at an angle α of 45 °, thereby preventing the plate from curling diagonally, avoiding the problems of excessive single or 0 °/90 ° ] orthogonal ply occupation, no fiber support at the diagonal direction of the plate, and severe matrix shrinkage causing plate curling.
According to another embodiment of the present invention, the number of the second fibers laid in the reinforcement layer is 1-5, so that the number of the 45 ° high modulus fiber skeleton laying layers is controlled to be minimum to avoid the problems of large number of laying layers and difficult control of the angle precision of the cross-layer angle.
According to a further embodiment of the invention, the first fibers in the baffle body layer with flange are designed to be [ +45 °/0 °/90 ° ] s, thereby preventing the plate from being curled diagonally, avoiding the problems that single or [0 °/90 ° ] orthogonal ply is over-proportioned, the plate has no fiber support in the diagonal direction, and the matrix is severely shrunk to curl the plate.
In yet another aspect of the present invention, a baffle with a cuff is provided. According to the embodiment of the invention, the baffle with the flanging is obtained by adopting the layering method in the embodiment. Therefore, the baffle plate with the flanging, which is obtained by the laying method, can reduce or avoid the generation and the expansion of surface microcracks caused by repeated deformation of the baffle plate when bearing cyclic load, the warping deformation of the laying structure is greatly reduced, the performance requirement of the laying structure is not influenced, and the tool does not need to be developed for the second time.
In a third aspect of the present invention, an automobile is provided. According to an embodiment of the invention, the automobile is provided with the baffle with the flanging, which is described in the embodiment. From this, the area turn-ups baffle that above-mentioned car has can reduce or avoid self to warp repeatedly when bearing cyclic load and lead to surperficial microcrack production and extension, and layer structure warp deformation reduces by a wide margin, does not influence layer structure performance demand, need not to carry out secondary development to the frock, has further satisfied consumer's demand.
The following embodiments of the present invention are described in detail, and it should be noted that the following embodiments are exemplary only, and are not to be construed as limiting the present invention. In addition, all reagents used in the following examples are commercially available or can be synthesized according to methods herein or known, and are readily available to those skilled in the art for reaction conditions not listed, if not explicitly stated.
Example 1
In the embodiment, for considering the composite material cost, medium and small batch application and other factors, the main structure of the baffle with the flanging (namely the body layer of the baffle with the flanging) is manufactured by adopting the design of common continuous glass fiber laying. In this embodiment, a vacuum bag pressing process is adopted, and a reinforcing layer with high modulus fiber plain cloth is added to the outermost layer of the main structure of the baffle with the flanged edge (see fig. 8-10). Wherein, the structural profile of the partition board is regular without complex curvesIn order to better exert the fiber performance and reduce the buckling of the fiber non-product structural factors, the first fibers laid in the body layer of the baffle with the flange of the embodiment are made of unidirectional glass fibers, and the surface density is about 120g/m2Each layer has a thickness of 0.12mm, and the structure of the layer is [ +45 °/0 °/90 ° ]]And s. On the basis, a layer of small tow low-spread plain carbon cloth is added on the outer side of the partition board structure, low-spread small tow 45-degree high-modulus fibers are selected to be sequentially and crossly woven to form a middle-plane symmetrical plain framework structure, the middle-plane symmetrical plain carbon cloth is laid on the surface of the partition board main body structure with the flanging, and the surface density is about 220g/m2And the thickness of each layer is 0.25mm, the laying area of the reinforcing layer on the surface of the body layer of the baffle with the flanging is 50%, and the laying angle alpha of the second fibers in the reinforcing layer is 45 degrees.
The area proportion of the enhancement layer on the surface of the baffle body layer with the flanging is increased to 75 percent and 100 percent by adopting the same method.
Example 2
In the embodiment, in order to compare the effect of the method on the glass fiber woven cloth laying and the influence of the laying area proportion on the reduction of deformation, the body layer of the baffle with the flanging is designed by adopting satin cloth with the same fiber bundles as glass fibers for laying, and the surface density is about 250g/m2Each layer has a thickness of 0.25mm, and the layer structure is [45 °/0 ° ]]And s, paying attention to the symmetrical layering of the longitude and latitude surfaces during layering. And paving and pasting the plain carbon cloth according to the area proportion of 50%, 75% and 100% respectively. The rest is the same as in example 1.
Comparative example 1
In the comparative example, no reinforcing layer is laid on the surface of the baffle body layer with the flanging, and the rest is the same as that in the example 1.
Comparative example 2
In the comparative example, no reinforcing layer is laid on the surface of the baffle body layer with the flanging, and the rest is the same as that in the example 2.
The baffle with the flanging obtained in the above embodiment and comparative example is subjected to a buckling deformation dimension test, and the test results are as follows: the areas of the plain carbon cloth layers in example 1 are 50%, 75% and 100% respectively, the warp deformation height sizes are 1.9mm, 1.5mm and 1mm, and the warp deformation height size of the baffle with flanging in comparative example 1 is 13.5mm, so that compared with comparative example 1, after 50%, 75% and 100% of plain carbon cloth is added on the surface of the baffle body layer with flanging in example 1, the warp deformation height sizes are reduced from 13.5mm to 1.9mm, 1.5mm and 1mm, and the performance and assembly requirements of the baffle with flanging are basically met.
Through tests, the warp deformation height sizes of the baffle with the flanging in the example 2 are respectively 50%, 75% and 100% of the plain carbon cloth layering areas and are respectively 1.5mm, 1.2mm and 1.0mm, and the warp deformation height size of the baffle with the flanging in the comparative example 2 is 12.5mm, so that the warp deformation height sizes of the baffle with the flanging in the example 2 are reduced from 12.5mm to 1.5mm, 1.2mm and 1.0mm after 50%, 75% and 100% of plain carbon cloth are respectively added in the example 2 compared with the comparative example 2, and the performance and assembly requirements of the baffle with the flanging are basically met.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A layering method of continuous fibers in a baffle with a flanged edge is characterized by comprising the following steps: laying a reinforcing layer on at least part of the surface of the baffle body layer with the flanging, laying first fibers in the baffle body layer with the flanging, laying second fibers in the reinforcing layer, wherein the thickness of the reinforcing layer is smaller than that of the baffle body layer with the flanging, and the modulus of the second fibers is larger than that of the first fibers.
2. The method of claim 1, wherein the ratio of the modulus of the second fiber to the modulus of the first fiber is not less than 3.
3. The method of claim 1, wherein a ratio of a thickness of the reinforcement layer to a thickness of the flanged separator body layer is not less than 1/4.
4. The method of any one of claims 1-3, wherein the first fibers are selected from at least one of glass fibers, basalt fibers, aramid fibers, and polyethylene fibers.
5. The method of any of claims 1-3, wherein the second fiber is a carbon fiber.
6. The method of any one of claims 1-3, wherein the reinforcement layer is laid on the surface of the flanged separator body layer in an area of 50% to 100%.
7. A method according to any one of claims 1-3, wherein the second fibres are laid in the reinforcement layer in a number of layers of 1-5;
optionally, the laying angle α of the second fibers in the reinforcing layer is 45 °.
8. The method of any of claims 1-3, wherein the first fibers are designed in the flanged separator body layer as [ +45 °/0 °/90 ° ] s.
9. A baffle plate with a flange is characterized in that the baffle plate with the flange is obtained by adopting the layering method of any one of claims 1-8.
10. An automobile having the baffle with a flange of claim 9.
CN202110784771.4A 2021-07-12 2021-07-12 Layering method of continuous fibers in baffle with flanging and baffle with flanging Pending CN113665138A (en)

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Publication number Priority date Publication date Assignee Title
CN101792954A (en) * 2010-03-04 2010-08-04 杨建中 In-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth
CN109228547A (en) * 2018-10-24 2019-01-18 株洲时代新材料科技股份有限公司 Fiber ply angles, the drawing and extruding section bar of reinforcing material
CN109715385A (en) * 2016-09-14 2019-05-03 三菱化学株式会社 Laminated substrate and its manufacturing method
CN111619504A (en) * 2020-05-28 2020-09-04 江苏理工学院 Automobile composite pedestrian protection beam
CN113085311A (en) * 2021-04-13 2021-07-09 史先锋 Multi-fiber reinforced thermoplastic resin composite material and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792954A (en) * 2010-03-04 2010-08-04 杨建中 In-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth
CN109715385A (en) * 2016-09-14 2019-05-03 三菱化学株式会社 Laminated substrate and its manufacturing method
CN109228547A (en) * 2018-10-24 2019-01-18 株洲时代新材料科技股份有限公司 Fiber ply angles, the drawing and extruding section bar of reinforcing material
CN111619504A (en) * 2020-05-28 2020-09-04 江苏理工学院 Automobile composite pedestrian protection beam
CN113085311A (en) * 2021-04-13 2021-07-09 史先锋 Multi-fiber reinforced thermoplastic resin composite material and manufacturing method thereof

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Application publication date: 20211119