CN111459222A - Light notebook computer shell and manufacturing method thereof - Google Patents

Light notebook computer shell and manufacturing method thereof Download PDF

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Publication number
CN111459222A
CN111459222A CN201910048017.7A CN201910048017A CN111459222A CN 111459222 A CN111459222 A CN 111459222A CN 201910048017 A CN201910048017 A CN 201910048017A CN 111459222 A CN111459222 A CN 111459222A
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China
Prior art keywords
notebook computer
layer
manufacturing
fiber
composite material
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CN201910048017.7A
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Chinese (zh)
Inventor
高峰
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Mitac Precision Technology Kunshan Ltd
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Mitac Precision Technology Kunshan Ltd
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Priority to CN201910048017.7A priority Critical patent/CN111459222A/en
Publication of CN111459222A publication Critical patent/CN111459222A/en
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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
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
    • 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
    • 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
    • B29C45/14311—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 using means for bonding the coating to the articles
    • 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
    • B29C45/14631—Coating reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • 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
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • 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
    • 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
    • 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
    • B29C2045/14237—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 the inserts being deformed or preformed outside the mould or mould cavity
    • B29C2045/14245—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 the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
    • 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
    • B29C45/14311—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 using means for bonding the coating to the articles
    • B29C2045/14319—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 using means for bonding the coating to the articles bonding by a fusion bond
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • 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
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • 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
    • B32B2363/00—Epoxy resins

Abstract

The invention relates to the field of manufacturing of notebook computer shells, in particular to a light notebook computer shell and a manufacturing method thereof. The main body of the light notebook computer shell is made of a thermosetting composite material plate, the thermosetting composite material plate comprises two fiber layers and an intermediate layer, the fiber layers are impregnated with thermosetting resin, and the intermediate layer is arranged between the two fiber layers. The light notebook computer shell and the manufacturing method thereof can realize light weight and weight reduction of the notebook computer shell under the condition of keeping the high strength and high modulus of the composite board.

Description

Light notebook computer shell and manufacturing method thereof
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of manufacturing of notebook computer shells, in particular to a light notebook computer shell and a manufacturing method thereof.
[ background of the invention ]
With the development of electronic and electrical devices and information devices such as notebook computers, tablet computers, cellular phones, portable information terminals, and cameras, there is a strong demand in the market for thin and lightweight products. Lightweight and thin products require thin walls of the outer shell or inner components that make up the product, light weight, and high strength and rigidity.
The composite material has the advantages of light weight, high strength and modulus, chemical corrosion resistance, fatigue resistance, easy integral forming and the like, and is widely applied to manufacturing products such as military industry, airplanes, automobiles, wind power and the like. The composite material has excellent mechanical properties, and therefore, can be used for housings of electronic and electrical devices and information devices such as notebook computers, tablet notebooks, cellular phones, portable information terminals, and cameras, and has effects of making the housings thin and reducing the weight of the devices.
At present, thermosetting composite material products used for products of electronic and electric appliances, automobiles, sports equipment and the like are mostly formed by using composite plates mixed by continuous carbon fibers and continuous glass fibers, and the density of the thermosetting all-carbon fiber composite plates is 1.40-1.60g/cm3The density of the composite board mixed by the carbon fiber and the glass fiber is 1.60 to 1.80g/cm3Although the modulus and rigidity are high enough, the weight of the product is heavy, which is not in line with the current development direction of weight reduction.
In view of the above, there is a need to develop a lightweight notebook computer casing to overcome the disadvantage of the prior art that the notebook computer casing is heavy.
[ summary of the invention ]
Therefore, an object of the present invention is to provide a lightweight notebook computer case capable of achieving lightweight and weight reduction of the notebook computer case while maintaining high strength and high modulus of the composite sheet material.
In order to achieve the above object, the main body of the lightweight notebook computer case according to the present invention is made of a thermosetting composite material sheet, the thermosetting composite material sheet includes two fiber layers and an intermediate layer, the fiber layers are impregnated with thermosetting resin, the intermediate layer is disposed between the two fiber layers, and the intermediate layer is a thermosetting resin layer containing hollow glass beads.
Optionally, the fiber layer is a thermosetting resin impregnated unidirectional or woven carbon fiber.
Optionally, the hollow glass microspheres have a particle size of 0.03-0.15mm and a bulk density of 0.3-0.4g/cm3。
Optionally, the thermosetting resin impregnated in the fiber layer and the thermosetting resin of the intermediate layer are the same resin.
Optionally, the resin is an epoxy resin.
The invention also provides a manufacturing method of the light notebook computer shell, which comprises the following steps:
(1) sequentially laying a fiber layer and an intermediate layer;
(2) heating a hot-pressing mold;
(3) placing the laid fiber layers and the middle layer into a hot-pressing mold for positioning;
(4) closing the hot-pressing die, pressurizing and preserving heat, and laminating the fiber layer and the middle layer to obtain a required shape;
(5) cooling the hot-pressing mold, opening the mold and taking out the laminated composite material plate;
(6) dispensing and baking the laminated plate;
(7) and placing the glued plate into an injection mold for injection molding.
Optionally, after the step (5), before the step (6), further comprising the steps of: and machining and finishing the laminated composite material plate.
Optionally, the glue at the midpoint in the step (6) is an AB glue, and is baked to a semi-cured state.
Optionally, the thickness of the fiber layer is 0.2mm, and the thickness of the middle layer is 0.9 mm.
Compared with the prior art, the light notebook computer shell and the manufacturing method thereof have the advantages that the shell main body is made of the thermosetting composite material plate, the thermosetting resin layer containing the hollow glass beads is used as the middle layer, and the fiber layers are used on the two surface layers of the middle layer, so that the light notebook computer shell has the following technical effects:
1. use of a thermosetting resin layer containing hollow glass beads as an interlayer enables lightweight thermoset composite panelsThe board has the heavy effect that the density of the board can reach 0.9-1.2g/cm3The effect of reducing the weight of the notebook computer shell is achieved, the using amount of fibers is reduced, and the cost is reduced.
2. The two sides of the middle layer are coated with fiber layers, so that the high strength and high modulus performance of the thermosetting composite material plate is maintained.
3. The hot pressing process is simple, the fiber layer and the middle layer are easy and convenient to lay, and the thermosetting composite material plates with different thicknesses are designed and molded according to the notebook computer shell.
[ description of the drawings ]
FIG. 1 is a schematic view showing the stacking of the fiber layers and the middle layer in the present invention.
FIG. 2 is a schematic view of a laminated thermosetting composite material plate according to the present invention.
[ detailed description ] embodiments
For a further understanding of the objects, technical effects and technical means of the present invention, reference will now be made in detail to the following description taken in conjunction with the accompanying drawings. Referring to fig. 1 and fig. 2, fig. 1 is a schematic view illustrating a fiber layer and an intermediate layer being stacked, and fig. 2 is a schematic view illustrating a thermosetting composite material plate after being pressed according to the present invention.
In this embodiment, the main body of the lightweight notebook computer case of the present invention is composed of a thermosetting composite material sheet 10, please refer to fig. 1, the thermosetting composite material sheet 10 includes two fiber layers 100 and an intermediate layer 200, the fiber layers 100 are impregnated with thermosetting resin, the intermediate layer 200 is disposed between the two fiber layers 100, and the intermediate layer 200 is a thermosetting resin layer containing hollow glass beads 210. The middle layer 200 can meet different design thickness requirements and greatly reduce the density of the plate 10, and the density of the plate 10 can reach 0.9-1.2g/cm3Thereby reducing the weight of the notebook computer housing.
The fiber layer 100 is a unidirectional or woven carbon fiber impregnated with thermosetting resin, and maximizes the strength of the reinforced plate 10 while retaining the texture of the carbon fiber.
Wherein the particle size of the hollow glass beads 210 is 0.03-0.15mm, and the stack of the hollow glass beads 210The bulk density is 0.3-0.4g/cm3Therefore, the compressive strength can reach 10-125Mpa, and the strength of the plate 10 is reinforced in an auxiliary way.
The thermosetting resin impregnated in the fiber layer 100 and the thermosetting resin of the intermediate layer 200 are the same resin, for example, both can be epoxy resin, and the same resin has the same physical property, so that the subsequent processing is convenient; of course, the thermosetting resin composition is not limited thereto, and both of them may be different thermosetting resins according to actual needs.
In addition, the invention also provides a manufacturing method of the light notebook computer shell, which comprises the following steps:
(1) referring to fig. 1, the fiber layer 100 and the middle layer 200 are sequentially stacked, that is, the fiber layer 100 is first stacked, the middle layer 200 is stacked on the fiber layer 100, and then the fiber layer 100 is stacked on the middle layer 200, wherein the thicknesses and strengths of the fiber layer 100 and the middle layer 200 can be set according to requirements;
(2) heating the hot-pressing die by the hot press, wherein the temperature can be determined according to the physical properties of the thermosetting resin used for the fiber layer 100 and the intermediate layer 200;
(3) placing the laid fiber layers 100 and the middle layer 200 into a hot-pressing die for positioning;
(4) closing a hot-pressing mold, pressurizing and preserving heat, and pressing the fiber layer 100 and the middle layer 200 into a whole to obtain the shape required by the notebook computer shell, as shown in fig. 2, wherein the pressed thermosetting composite material plate 10 is the shape required by the notebook computer shell;
(5) cooling the hot-pressing mold, opening the mold and taking out the laminated composite material plate 10;
(6) dispensing and baking plastic cement to be injection-molded on the pressed plate 10;
(7) and placing the glued plate 10 into an injection mold to injection mold a structural part, wherein the structural part can be a clamping hook, a convex rib and the like.
Wherein, after the step (5), before the step (6), the method further comprises the steps of: and machining and refitting the laminated composite material plate 10 to improve the quality and achieve the effect required by the notebook computer shell.
And (3) baking the glue at the midpoint in the step (6) to a semi-solidified state to enable the injection-molded structural member to be tightly combined with the thermosetting composite material plate 10.
In a preferred embodiment, the thickness of the fiber layer 100 is 0.2mm, and the thickness of the middle layer 200 is 0.9mm, so that the notebook computer casing has both high strength and light weight.
The following description will take an example of using a thermosetting epoxy resin composite material sheet material to make a 14-inch notebook computer housing.
Calculating the sizes of the fiber layer 100 and the middle layer 200 according to the designed size of the 14-inch notebook computer shell, and cutting the fiber layer 100 impregnated with the epoxy resin and the middle layer 200 containing the hollow glass beads 210 into required sizes: the length is 350mm, and the width is 255 mm; the fiber layer 100, the middle layer 200 and the fiber layer 100 are laid, and the fiber layer 100 and the middle layer 200 are 0.2mm and 0.9mm respectively corresponding to the thickness of the lamination; heating the hot-pressing die to 150-160 ℃; sending the stacked lamination into a hot-pressing die and positioning; closing the hot-pressing die, pressurizing, keeping the temperature at 150-160 ℃ for 15 minutes, and pressing the fiber layer 100 and the middle layer 200 to obtain the shape required by the notebook computer shell; cooling the hot-pressing mold, opening the mold when the temperature is cooled to 30-60 ℃, and taking out the hot-pressed plate 10; machining and trimming the hot-pressed plate 10; dispensing AB glue on the plate 10 at the position where plastic needs to be injected, and baking the glue at 80 ℃ for 2 hours to be in a semi-cured state after dispensing; after baking, placing the plate 10 into an injection mold to be injection molded into a hook-type structural member, so as to obtain a light notebook computer shell; one cycle ends.
Compared with the prior art, the light notebook computer shell and the manufacturing method thereof of the invention have the advantages that the shell main body is made of the thermosetting composite material plate 10, the plate 10 contains the thermosetting resin layer of the hollow glass beads 210 as the middle layer 200, and the fiber layers 100 are used on the two surface layers of the middle layer 200, so that the light notebook computer shell has the following technical effects:
1. the use of the thermosetting resin layer containing the hollow glass beads 210 as the intermediate layer 200 realizes a light weight reduction effect of the thermosetting composite material sheet 10, and the density of the sheet 10 can reach 0.9-1.2g/cm3The effect of reducing the weight of the notebook computer shell is achieved, the using amount of fibers is reduced, and the cost is reduced.
2. The fiber layers 100 are coated on both sides of the middle layer 200, so that the high strength and high modulus performance of the thermosetting composite material plate 10 is maintained.
3. The hot pressing process is simple, the fiber layer 100 and the middle layer 200 are easy and convenient to lay, and the thermosetting composite material plates 10 with different thicknesses are designed and molded according to the notebook computer shell.

Claims (9)

1. The light notebook computer shell is characterized in that a main body is made of a thermosetting composite material plate, the thermosetting composite material plate comprises two fiber layers and an intermediate layer, the fiber layers are impregnated with thermosetting resin, the intermediate layer is arranged between the two fiber layers, and the intermediate layer is a thermosetting resin layer containing hollow glass beads.
2. The lightweight notebook computer case of claim 1, wherein the fiber layer is a carbon fiber impregnated with thermosetting resin, unidirectional or woven.
3. The lightweight notebook computer housing of claim 1, wherein the hollow glass beads have a particle size of 0.03 to 0.15mm and a bulk density of 0.3 to 0.4g/cm3。
4. The lightweight notebook computer case according to claim 1, wherein the thermosetting resin impregnated in the fiber layer and the thermosetting resin in the intermediate layer are the same resin.
5. The lightweight notebook computer case of claim 4, wherein the resin is an epoxy resin.
6. A method for manufacturing a lightweight notebook computer case, which is used for manufacturing the lightweight notebook computer case according to any one of claims 1 to 5, wherein the manufacturing method comprises the following steps:
(1) sequentially laying a fiber layer and an intermediate layer;
(2) heating a hot-pressing mold;
(3) placing the laid fiber layers and the middle layer into a hot-pressing mold for positioning;
(4) closing the hot-pressing die, pressurizing and preserving heat, and laminating the fiber layer and the middle layer to obtain a required shape;
(5) cooling the hot-pressing mold, opening the mold and taking out the laminated composite material plate;
(6) dispensing and baking the laminated plate;
(7) and placing the glued plate into an injection mold for injection molding.
7. The method for manufacturing a lightweight notebook computer case according to claim 6, wherein after the step (5) and before the step (6), further comprising the steps of: and machining and finishing the laminated composite material plate.
8. The manufacturing method of the lightweight notebook computer case according to claim 6, wherein the glue at the midpoint in the step (6) is AB glue and is baked to a semi-cured state.
9. The method for manufacturing a lightweight notebook computer case according to claim 6, wherein the thickness of the fiber layer is 0.2mm, and the thickness of the middle layer is 0.9 mm.
CN201910048017.7A 2019-01-18 2019-01-18 Light notebook computer shell and manufacturing method thereof Pending CN111459222A (en)

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CN103448204A (en) * 2012-05-29 2013-12-18 汉达精密电子(昆山)有限公司 Carbon fiber plate dispensing injection molding adhesive forming method and product thereof
CN106183135A (en) * 2016-07-06 2016-12-07 江苏澳盛复合材料科技有限公司 A kind of carbon fiber plate

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Application publication date: 20200728