CN111114080A - Composite board for notebook shell and preparation method thereof - Google Patents
Composite board for notebook shell and preparation method thereof Download PDFInfo
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- CN111114080A CN111114080A CN202010036987.8A CN202010036987A CN111114080A CN 111114080 A CN111114080 A CN 111114080A CN 202010036987 A CN202010036987 A CN 202010036987A CN 111114080 A CN111114080 A CN 111114080A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products 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 form; Layered products 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 form; Layered products 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
Abstract
The invention discloses a composite board for a notebook shell and a preparation method thereof, and the composite board for the notebook shell of one embodiment comprises a main board, a first reinforcing layer and a second reinforcing layer, wherein the main board is formed by a fiber composite board with prestress, and the fiber composite board is formed by melting and infiltrating a thermoplastic material into a fiber material; and the frame is formed by a thermosetting composite material, is arranged on the periphery of the main board and is used for fixing the prestress of the main board. The composite board for the notebook computer shell of the embodiment of the invention has the advantages that the frame is arranged at the periphery of the main board and fixes the prestress of the main board, so that the notebook computer shell is firm enough and cannot deform in the using process; the fiber composite board is formed by melting and infiltrating the thermoplastic material into the fiber material or the woven composite, so that the fiber composite board with better rigidity, lighter weight and thinner thickness can be obtained, and the notebook computer is lighter and thinner.
Description
Technical Field
The invention belongs to the technical field of material preparation, and particularly relates to a composite board for a notebook shell and a preparation method thereof.
Background
In the prior art, the composite board for the notebook shell is mostly made of carbon fiber reinforced composite material. The notebook computer shell is made of the carbon fiber reinforced composite material, so that the notebook computer shell has the characteristics of elegance and firmness of aluminum-magnesium alloy and high plasticity of ABS engineering plastic, the appearance of the notebook computer shell is similar to that of plastic, but the strength and the heat conduction capability of the notebook computer shell are superior to those of the plastic, and the carbon fiber is a conductive material and can play a role in shielding similar to metal.
The composite board for the notebook shell is mainly characterized in that a main board is made of carbon fiber reinforced composite materials, and thermoplastic composite materials are injected around the main board to form a frame; the main board comprises a carbon fiber layer, a foaming layer and a carbon fiber layer which are sequentially arranged from top to bottom, wherein the carbon fiber layer is formed by stacking unidirectional carbon fibers at different angles. The middle of the structure adopts the foaming layer, and the outer layer adopts the high-strength carbon fiber layer, so that the inertia moment of the whole composite board is strengthened. Compared with the case of the computer which is made of carbon fibers, the weight of the computer case can be effectively reduced by the carbon fiber reinforced composite material. However, the computer housing made of the carbon fiber reinforced composite material still has the problems of high cost, thick housing thickness and incapability of realizing lightness and thinness, so that a novel composite material is required to be used for manufacturing the notebook housing in order to meet the use requirements of consumers.
Disclosure of Invention
In view of this, embodiments of the present invention provide a composite board for a notebook computer housing and a method for manufacturing the same, which can reduce the weight of the notebook computer housing and achieve the lightness and thinness of the notebook computer.
In order to achieve the above object, a first aspect of embodiments of the present invention provides a composite board for a notebook housing. A composite sheet for a notebook housing includes: the main board is formed by a prestressed fiber composite board which is formed by melting and infiltrating a thermoplastic material into a fiber material; and the frame is formed by a thermosetting composite material, is arranged on the periphery of the main board and is used for fixing the prestress of the main board.
Further, the thermoplastic material includes, but is not limited to, Polycarbonate (PC), a composite of PC and Acrylonitrile Butadiene Styrene (ABS), PA, PPS, PPE, or thermoplastic polyurethane elastomer rubber (TPU).
Further, the fibrous material includes, but is not limited to, fiberglass, nylon fibers, Kevlar fibers, or braided composites.
Further, the thermoset composite material is selected from thermoset fibers or filler materials that do not shield electromagnetic waves.
Further, the fiber composite board comprises a first thermoplastic layer, a fiber layer and a second thermoplastic layer which are oppositely arranged from top to bottom in sequence; the first thermoplastic layer and the second thermoplastic layer are both formed of thermoplastic material and the fibrous layer is formed of fibrous material.
Further, the thermoplastic material has fire-retardant properties; still further, the thermoplastic material has an LOI > 28.
Further, the thickness of the composite board for the notebook shell is 0.6-2.0 mm.
In a second aspect of the embodiments of the present invention, there is provided a method for preparing a composite sheet for a notebook computer case according to the first aspect of the embodiments of the present invention. A preparation method of the composite board for the notebook shell comprises the following steps: after the fiber composite board is flatly laid, stretching the fiber composite board in the horizontal direction to obtain a fiber composite board with prestress; and injecting a thermosetting composite material around the prestressed fiber composite board and curing the thermosetting composite material so as to form a frame around the fiber composite board and obtain the composite board for the notebook computer shell.
Further, the fiber composite board is obtained by the following steps: preparing fiber materials into fiber braided tubes; respectively paving thermoplastic materials on the outer surface and/or the inner surface of the fiber braided tube, and carrying out plastic suction to obtain a plastic-containing fiber braided tube; positioning and shearing the plastic-containing fiber braided tube to obtain a plastic-containing fiber braided plate; and heating and sintering the plastic-containing fiber woven plate to obtain the fiber composite plate.
Further, the injection molding of the thermosetting composite material to the periphery of the fiber composite board with prestress and the curing are performed so that a frame is formed around the fiber composite board, and the composite board for the notebook computer shell is obtained, and the method comprises the following steps: attaching a shape-separating adhesive tape to the middle area of the prestressed fiber composite board; injecting a thermosetting composite material to the fiber composite board at the periphery of the release tape and curing the thermosetting composite material so as to form a frame around the fiber composite board; and removing the prestress of the fiber composite board with the frame to obtain the composite board for the notebook computer shell.
Further, according to the preparation method of the composite board for the notebook computer shell, the injection molding mode is selected from one of pouring, BMC punch forming, SMC punch forming and CNC milling.
Compared with the prior art, the embodiment of the invention at least has the following beneficial effects:
1. the composite board for the notebook computer shell comprises a main board formed by a prestressed fiber composite board and a frame formed by a thermosetting composite material, wherein the frame is arranged around the main board and fixes the prestress of the main board, so that the notebook computer shell is firm enough and cannot deform in the using process.
2. The fiber composite board is formed by melting and infiltrating the thermoplastic material into the fiber material, so that the fiber composite board with better rigidity, lighter weight and thinner thickness can be obtained, and the notebook computer can be lightened and thinned.
3. The traditional notebook computer shell is mainly prepared by carbon fibers, and the notebook computer shell of the embodiment of the invention is prepared by fiber materials or woven composites; due to the fact that the selectable types of fiber materials are wide, the manufacturing cost of the notebook computer shell is reduced.
Drawings
Fig. 1 is a schematic structural view of a composite board for a notebook shell according to embodiment 1 of the present invention;
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The embodiment of the invention provides a composite board for a notebook shell, which comprises a main board, a first connecting piece and a second connecting piece, wherein the main board is formed by a prestressed fiber composite board which is formed by melting and infiltrating a thermoplastic material into a fiber material; and the frame is formed by a thermosetting composite material, is arranged on the periphery of the main board and is used for fixing the prestress of the main board.
The composite board for the notebook computer shell comprises a main board formed by a prestressed fiber composite board and a frame formed by a thermosetting composite material, wherein the frame is arranged around the main board and fixes the prestress of the main board, so that the notebook computer shell is firm enough, and the problems of deformation, warping and shrinkage cannot be caused in the using process.
In further embodiments, the thermoplastic material includes, but is not limited to, PC, a composite of PC and ABS, engineering plastics such as PA, PPS, PPE, or TPU, or a high functional plastic composite.
The fiber composite board is formed by melting and infiltrating the thermoplastic material into the fiber material, so that the fiber composite board with lighter weight and thinner thickness can be obtained; thereby, the notebook can be thinned.
In further embodiments, the fibrous material includes, but is not limited to, fiberglass, nylon, or Kevlar.
The notebook computer shell in the embodiment of the invention is made of fiber materials; due to the fact that the selectable types of fiber materials are wide, the manufacturing cost of the notebook computer shell is reduced.
In a further embodiment, the thermoset composite material is selected from fibers or filler materials that do not have electromagnetic wave shielding properties. This is because the thermosetting composite material that blocks electromagnetic waves affects the transmission of electrical signals during the use of the notebook computer.
In a further embodiment, the fiber composite board comprises a first thermoplastic layer, a fiber layer and a second thermoplastic layer which are oppositely arranged from top to bottom in sequence; the first thermoplastic layer and the second thermoplastic layer are both formed of thermoplastic material and the fibrous layer is formed of fibrous material.
Since the fiber composite board in the embodiment is formed by melting and infiltrating the first thermoplastic layer and the second thermoplastic layer into the fiber layer, the thickness and the preparation cost of the composite board for the notebook computer shell can be reduced by adopting the fiber composite board as the main board.
In a further embodiment, the thermoplastic material has fire retardant properties; in a further embodiment, the thermoplastic has an LOI > 28.
The main board is prepared from the thermoplastic material with the fireproof characteristic, so that the heat resistance and the fireproof performance of the composite board for the notebook shell can be improved, and the use safety of the notebook is improved.
In further embodiments, the thickness of the composite sheet for a notebook housing is 0.6 to 2.0mm (e.g., 0.6, 1.0, 1.2, 1.6, or 2.0mm, etc.).
In a second aspect, the present invention provides a method for preparing a composite sheet for a notebook housing according to the first aspect of the present invention, including: after the fiber composite board is flatly laid, stretching the fiber composite board in the horizontal direction to obtain a fiber composite board with prestress; and injecting a thermosetting composite material around the prestressed fiber composite board and curing the thermosetting composite material so as to form a frame around the fiber composite board and obtain the composite board for the notebook computer shell.
According to the embodiment of the invention, when the composite board for the notebook shell is prepared, the fiber composite board is stretched to have the prestress, and then the thermosetting composite material is injected around the stretched fiber composite board to fix the prestress, so that the fiber composite board is prevented from deforming, and the strength of the fiber composite board is improved.
In a further embodiment, the fibrous composite board is obtained by: preparing fiber materials into fiber braided tubes; respectively paving thermoplastic materials on the outer surface and/or the inner surface of the fiber braided tube, and carrying out plastic suction to obtain a plastic-containing fiber braided tube; positioning and shearing the plastic-containing fiber braided tube to obtain a plastic-containing fiber braided plate; and heating and sintering the plastic-containing fiber woven plate to obtain the fiber composite plate.
According to the embodiment of the invention, the thermoplastic material is attached to the surface of the fiber braided tube through plastic suction, and then the thermoplastic material is melted and infiltrated into the fiber material through heating and sintering, so that the fiber composite plate with the smaller thickness is obtained.
In a further embodiment, the injection molding of the thermosetting composite material around the prestressed fiber composite board and the curing are performed to form a frame around the fiber composite board, so as to obtain the composite board for a notebook computer case, including: attaching a shape-separating adhesive tape to the middle area of the prestressed fiber composite board; injecting a thermosetting composite material to the fiber composite board at the periphery of the release tape so as to form a frame around the fiber composite board; and removing the prestress of the fiber composite board with the frame to obtain the composite board for the notebook computer shell.
In further embodiments, the injection molding is performed by one selected from the group consisting of injection molding, BMC stamping, SMC stamping, and CNC milling. Compared with the injection molding temperature of the traditional thermoplastic frame, the frame is prepared by adopting the injection molding method, so that the processing and forming temperature can be reduced, and the preparation cost is reduced.
It is further noted that any range recited herein includes the endpoints and any values therebetween and any subranges subsumed therein or any values therebetween unless otherwise specified.
Example 1
Fig. 1 is a schematic structural diagram of a composite board for a notebook computer case in embodiment 1 of the present invention.
A composite board for a notebook computer case includes a main board 10 formed of a fiber composite board having a prestress and a frame 20 formed of a thermosetting composite material; the frame 20 is arranged around the main board 10 and used for fixing the prestress of the main board 10; the main plate 10 is formed by a prestressed fibre composite plate formed by the melt infiltration of a thermoplastic material PC with LOI >28 into glass fibres; the frame 20 is formed of a thermosetting fiber or filler material having no electromagnetic wave shielding property. The fiber composite board comprises a first thermoplastic layer, a fiber layer and a second thermoplastic layer which are oppositely arranged from top to bottom in sequence; the first thermoplastic layer and the second thermoplastic layer are both formed from the thermoplastic material PC and the fibre layers are formed from glass fibres.
A preparation method of a composite board for a notebook shell comprises the following steps:
the method comprises the following steps: preparing glass fibers with tensile modulus of 72GPa into fiber braided tubes by utilizing braiding equipment; then, paving a thermoplastic material PC on the inner side of the fiber braided tube by utilizing inner layer dragging equipment, paving the thermoplastic material PC on the outer side of the fiber braided tube by utilizing outer layer dragging equipment, and carrying out plastic suction on the fiber braided tube and the thermoplastic material PC by utilizing plastic suction equipment after the paving is finished to obtain a plastic-containing fiber braided tube;
step two: positioning the plastic-containing fiber braided tube by using a positioning line device, and then shearing by using a shearing device to obtain a plastic-containing fiber braided plate;
step three: heating and sintering the plastic-containing fiber woven plate by using heating and sintering equipment to obtain a fiber composite plate; placing the fiber composite board in a prestress stretching device, and stretching the fiber composite board in the horizontal direction by adopting a prestress of 20MPa to obtain the fiber composite board with the prestress;
step four: sticking a shape separating adhesive tape to the middle area of the fiber composite plate with prestress by using shape separating adhesive tape sticking equipment; erecting a filling mould around the release tape, filling a thermosetting composite material into the fiber composite board around the release tape, and curing at 80 ℃ to obtain a frame;
step five: and removing the pouring mold, and removing the prestress of the fiber composite board with the frame to obtain the composite board for the notebook computer shell.
The thickness of the prior art Dongli thermosetting carbon fiber sheet is 1.25mm, and the tensile modulus is 38 GPa.
The composite board for the notebook computer shell has the tensile modulus of 50GPa and the thickness of 1.1 mm. Compared with Dongli thermosetting carbon fiber boards, the thickness change rate of the composite board for the notebook computer shell provided by the embodiment of the invention is reduced by 12%.
Example 2
A composite board for a notebook computer case includes a main board 1 formed of a fiber composite board having a prestress and a frame 2 formed of a thermosetting composite material; the frame 2 is arranged around the main board 1 and used for fixing the prestress of the main board 1; the main plate 1 is formed by a prestressed fiber composite plate which is formed by melting and infiltrating a thermoplastic material PPS with LOI >28 into carbon fibers; the frame 2 is formed of a fiber material having no electromagnetic wave shielding property. The fiber composite board comprises a first thermoplastic layer, a fiber layer and a second thermoplastic layer which are oppositely arranged from top to bottom in sequence; the first thermoplastic layer and the second thermoplastic layer are both formed by the plastic material PPS, the fibre layers being formed by carbon fibres.
A preparation method of a composite board for a notebook shell comprises the following steps:
the method comprises the following steps: stacking the carbon fibers to prepare a fiber braided tube; then, paving thermoplastic material PPS on the inner side of the fiber braided tube by utilizing inner layer dragging equipment, paving thermoplastic material PPS on the outer side of the fiber braided tube by utilizing outer layer dragging equipment, and carrying out plastic suction on the fiber braided tube and the thermoplastic material PPS by utilizing plastic suction equipment after the paving is finished to obtain the plastic-containing fiber braided tube;
step two: positioning the plastic-containing fiber braided tube by using a positioning line device, and then shearing by using a shearing device to obtain a plastic-containing fiber braided plate;
step three: heating and sintering the plastic-containing fiber woven plate by using heating and sintering equipment to obtain a fiber composite plate; placing the fiber composite board in a prestress stretching device, and stretching the fiber composite board in the horizontal direction by adopting a prestress of 20MPa to obtain the fiber composite board with the prestress;
step four: sticking a shape separating adhesive tape to the middle area of the fiber composite plate with prestress by using shape separating adhesive tape sticking equipment; erecting a stamping die at the periphery of the release tape, stamping a thermosetting composite material on the fiber composite board BMC at the periphery of the release tape, and curing at 115 ℃ to obtain a frame;
step five: and removing the stamping die, and removing the prestress of the fiber composite board with the frame to obtain the composite board for the notebook computer shell.
The thickness of the prior art Dongli thermosetting carbon fiber sheet is 1.25mm, and the tensile modulus is 38 GPa.
The tensile modulus of the composite board for the notebook computer shell is 1mm, the tensile modulus is 70GPa, and compared with the Dongli thermosetting carbon fiber board, the thickness change rate of the composite board for the notebook computer shell is reduced by 20%.
In the description herein, 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.
Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A composite sheet for a notebook housing, comprising:
a main plate formed of a prestressed fiber composite plate formed by melting and infiltrating a thermoplastic material into a fiber material;
and the frame is formed by a thermosetting composite material, is arranged on the periphery of the main board and is used for fixing the prestress of the main board.
2. The composite board for a notebook shell according to claim 1, wherein the thermoplastic material includes but is not limited to PC, a composite material of PC and ABS, PA, PPS, PPE or TPU.
3. The composite panel for a notebook housing of claim 1, wherein the fiber material comprises but is not limited to fiberglass, nylon fiber, Kevlar or a woven composite.
4. The composite sheet for a notebook housing according to claim 1, wherein the thermosetting composite material is selected from thermosetting fiber or filler material having no shielding against electromagnetic waves.
5. The composite board for a notebook shell according to claim 1, wherein the fiber composite board comprises a first thermoplastic layer, a fiber layer and a second thermoplastic layer which are oppositely arranged from top to bottom; the first thermoplastic layer and the second thermoplastic layer are both formed of thermoplastic material and the fibrous layer is formed of fibrous material.
6. The composite sheet for a notebook housing in accordance with claim 1 or 2, wherein the thermoplastic material has fire retardant properties; preferably, the thermoplastic material has an LOI > 28.
7. The composite sheet for a notebook housing according to claim 1, wherein the thickness of the composite sheet for a notebook housing is 0.6 to 2.0 mm.
8. A method of preparing a composite sheet for a notebook cover according to any one of claims 1 to 7, comprising:
after the fiber composite board is flatly laid, stretching the fiber composite board in the horizontal direction to obtain a fiber composite board with prestress;
and injecting a thermosetting composite material around the prestressed fiber composite board and curing the thermosetting composite material so as to form a frame around the fiber composite board and obtain the composite board for the notebook computer shell.
9. The method of manufacturing according to claim 8, wherein the fiber composite board is obtained by:
preparing fiber materials into fiber braided tubes;
respectively paving thermoplastic materials on the outer surface and/or the inner surface of the fiber braided tube, and carrying out plastic suction to obtain a plastic-containing fiber braided tube;
positioning and shearing the plastic-containing fiber braided tube to obtain a plastic-containing fiber braided plate;
and heating and sintering the plastic-containing fiber woven plate to obtain the fiber composite plate.
10. The method for preparing a composite board for a notebook computer case according to claim 8, wherein the periphery of the prestressed fiber composite board is injection-molded with a thermosetting composite material and cured, so that a frame is formed around the fiber composite board, and the composite board for a notebook computer case is obtained, comprising:
attaching a shape-separating adhesive tape to the middle area of the prestressed fiber composite board;
injecting a thermosetting composite material to the fiber composite board at the periphery of the release tape and curing the thermosetting composite material so as to form a frame around the fiber composite board;
and removing the prestress of the fiber composite board with the frame to obtain the composite board for the notebook computer shell.
11. The method of claim 8, wherein the injection molding is performed by one selected from the group consisting of injection molding, BMC press molding, SMC press molding, and CNC milling.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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