CN111716761A - Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof - Google Patents
Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof Download PDFInfo
- Publication number
- CN111716761A CN111716761A CN202010630256.6A CN202010630256A CN111716761A CN 111716761 A CN111716761 A CN 111716761A CN 202010630256 A CN202010630256 A CN 202010630256A CN 111716761 A CN111716761 A CN 111716761A
- Authority
- CN
- China
- Prior art keywords
- die
- paper honeycomb
- aramid fiber
- fiber paper
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000003660 Reticulum Anatomy 0.000 title claims abstract description 54
- 239000004760 aramid Substances 0.000 title claims abstract description 52
- 229920003235 aromatic polyamide Polymers 0.000 title claims abstract description 52
- 239000000835 fiber Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 241000264877 Hippospongia communis Species 0.000 claims abstract description 53
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000002365 multiple layer Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 3
- 210000003491 Skin Anatomy 0.000 description 2
- -1 phenolic aldehyde Chemical class 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- 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
- B29C70/342—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 isostatic 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
Abstract
A simple pre-setting die for aramid fiber paper honeycombs with special-shaped curved surfaces and a manufacturing method thereof. The simple pre-setting die comprises a die body, wherein the die body is formed by compounding multiple layers of high-temperature-resistant prepregs, and a plurality of positioning holes for positioning aramid paper honeycombs are formed in the periphery of the die body. The manufacturing method adopts the ready-made composite material product forming die and is formed by compounding multiple layers of high-temperature resistant prepregs. The invention has the advantages of simple structure, simple and convenient manufacture and light structure, reduces the manufacturing cost by more than 80 percent compared with a steel die, has convenient pre-setting treatment operation, and has the technical effect of good curved surface laminating effect of the treated aramid paper honeycomb and a composite material product.
Description
Technical Field
The invention relates to a mold, in particular to a simple pre-shaping mold for a special-shaped curved surface aramid paper honeycomb used in a composite material sandwich structure and a manufacturing method thereof.
Background
In the prior art, sandwich materials for composite sandwich structural articles are typically structurally reinforced with an aramid paper honeycomb core. The sandwich structure of the composite material is mostly of a special-shaped curved surface structure, and the aramid paper honeycomb is mostly of a flat plate structure. Before composite processing, the aramid paper honeycomb of the flat plate structure needs to be subjected to pre-setting treatment so as to be tightly attached to the curved surface of a composite material product, and firm bonding and delamination of the aramid paper honeycomb and the curved surfaces of the inner skin and the outer skin are ensured in the forming process. The traditional pre-setting die for pre-setting the aramid fiber paper honeycomb flat plate structure is a steel die structure, so that the manufacturing cost is high, and the manufacturing period is long. The simple pre-shaping die for the special-shaped curved surface aramid paper honeycomb used in the composite material sandwich structure and the matched processing method are needed in production, the manufacture is simple and convenient, and the production cost is low.
Disclosure of Invention
The invention aims to provide a simple presetting mold for aramid paper honeycombs with special-shaped curved surfaces.
The invention adopts the following technical scheme that: the mould body, the mould body is formed by the compound of multilayer high temperature resistant preimpregnation material, and the periphery of mould body is equipped with a plurality of locating holes that are used for fixing a position aramid fiber paper honeycomb.
The principle is as follows: the existing composite material product forming die (female die or male die) is utilized to compound by multiple layers of high-temperature resistant prepregs, so that the special-shaped curved surface aramid fiber paper honeycomb simple pre-forming die is manufactured. The positioning holes are arranged and used for being matched with an electrician clamp to position the aramid paper honeycomb. The simple pre-setting die for the aramid fiber paper honeycomb with the special-shaped curved surface can replace a traditional steel die, and is simple and convenient to manufacture and low in production cost. After the aramid fiber paper honeycomb is subjected to pre-setting treatment on the simple pre-setting die for the aramid fiber paper honeycomb with the special-shaped curved surface, the aramid fiber paper honeycomb can be well attached to the curved surface of the composite material product.
The presetting processing operation method comprises the following steps: the aramid fiber paper honeycomb is attached to the simple pre-forming die for the aramid fiber paper honeycomb with the special-shaped curved surface, the periphery of the aramid fiber paper honeycomb can be positioned through an electrician clamp and a positioning hole, a shear cut is formed at a fold position to remove redundant honeycombs, phenolic aldehyde varnish is coated at an opening, the aramid fiber paper honeycomb is fixed through the electrician clamp, and after high-temperature curing and bonding, the pre-forming processing of the aramid fiber paper honeycomb with the special-shaped curved surface is completed.
The invention aims to solve another problem of providing a manufacturing method of the simple pre-forming die for the aramid paper honeycomb with the special-shaped curved surface.
A manufacturing method of a simple pre-setting die for aramid paper honeycombs with special-shaped curved surfaces comprises the following steps:
a. preparing materials: preparing epoxy resin glass fiber prepreg with proper size;
b. pretreatment of a mold: coating a release agent on the prepared composite material product forming female die;
c. molding: laying prepreg in a forming concave mould of a composite material product, overlapping the prepreg in multiple layers, laying the prepreg layer by layer, forming a shear edge at an uneven part, and staggering the openings of each layer to remove bubbles between layers;
d. and (3) curing: placing demoulding cloth on the surface, vacuumizing and solidifying to a vacuum degree of more than or equal to 0.092 Mpa; the curing process is carried out in two stages: stage 1: temperature: 80 +/-5 ℃, heat preservation time: 1h, stage 2: temperature: 150 +/-5 ℃, heat preservation time: 4 h;
e. demolding: demolding to obtain a blank of the simple pre-shaping mold for the aramid fiber paper honeycomb;
f. repairing pliers: and (5) removing burrs on the blank obtained in the step (5), polishing to remove the surface release agent, and drilling a plurality of positioning holes along the periphery to obtain the product.
The invention has the following advantages: 1. simple structure adopts multilayer high temperature resistant preimpregnation material composite construction, has replaced traditional steel mould structure. 2. It is simple and convenient to manufacture. The composite material can be manufactured by compounding multiple layers of high-temperature resistant prepregs by using a ready-made composite material product forming die. 3. The manufacturing cost is low. According to measurement and calculation, compared with a steel mould, the pre-forming mould of the multilayer high-temperature-resistant prepreg composite structure has the advantage that the manufacturing cost is reduced by more than 80%. 4. The aramid fiber paper honeycomb pre-shaping device is light and handy in structure, convenient to pre-shape aramid fiber paper honeycomb, and good in curved surface laminating effect of the treated aramid fiber paper honeycomb and a composite material product.
Drawings
FIG. 1 is a schematic view of the structure principle of the present invention (illustrating the structure relationship between the present invention and the product forming die in the manufacturing process).
Fig. 2 is a schematic top view of the structure of fig. 1.
Fig. 3 is a schematic diagram of the working principle of the product of the invention for performing pre-setting treatment on aramid paper honeycombs.
In the figure: the product forming die comprises a product forming female die 1, an aramid fiber paper honeycomb simple pre-forming die 2, an aramid fiber paper honeycomb 3 and a positioning hole 4.
Detailed Description
As shown in fig. 1 to 3, the die body according to one embodiment of the present invention is formed by compounding multiple layers of high temperature resistant prepregs, and a plurality of positioning holes 4 for positioning the aramid paper honeycomb are formed around the die body.
The principle is as follows: the method comprises the steps of utilizing a ready-made composite material product forming die (as shown in figure 1, a product forming concave die 1 is adopted in the embodiment) to compound by using a plurality of layers of high-temperature resistant prepregs, so as to prepare the special-shaped curved surface aramid paper honeycomb simple pre-forming die 2. Set up locating hole 4, the effect lies in and presss from both sides the cooperation with electrician, can fix a position aramid fiber paper honeycomb. The simple pre-setting die 2 for the aramid fiber paper honeycomb with the special-shaped curved surface can replace a traditional steel die, and is simple and convenient to manufacture and low in production cost. After the aramid fiber paper honeycomb is subjected to pre-setting treatment on the simple pre-setting mould 2 for the aramid fiber paper honeycomb with the special-shaped curved surface, the aramid fiber paper honeycomb can be well attached to the curved surface of the composite material product.
The presetting processing operation method comprises the following steps: the aramid fiber paper honeycomb is attached to the simple pre-forming die 2 for the aramid fiber paper honeycomb with the special-shaped curved surface, the periphery of the aramid fiber paper honeycomb can be positioned through an electrician clamp and a positioning hole 4, a shear edge is formed at a fold position to remove redundant honeycombs, phenolic aldehyde varnish is coated at an opening, the aramid fiber paper honeycomb is fixed through the electrician clamp, and after high-temperature curing and bonding, the pre-forming processing of the aramid fiber paper honeycomb with the special-shaped curved surface is completed.
A manufacturing method of a simple pre-setting die for aramid paper honeycombs with special-shaped curved surfaces comprises the following steps:
a. preparing materials: preparing a plurality of epoxy resin glass fiber prepregs with proper sizes (the size is 2100mm multiplied by 1600mm, and the number is 12 in a specific embodiment);
b. pretreatment of a mold: coating a release agent on the prepared composite material product forming female die 1;
c. molding: laying prepreg in a composite material product forming female die 1, overlapping the prepreg in multiple layers, laying the prepreg layer by layer, forming a shear edge at an uneven part, and staggering the openings of each layer to remove bubbles between layers;
d. and (3) curing: placing demoulding cloth on the surface, vacuumizing and solidifying to a vacuum degree of more than or equal to 0.092 Mpa; the curing process is carried out in two stages: stage 1: temperature: 80 +/-5 ℃, heat preservation time: 1h, stage 2: temperature: 150 +/-5 ℃, heat preservation time: 4 h;
e. demolding: demolding to obtain a blank of the aramid fiber paper honeycomb simple pre-shaping mold 2;
f. repairing pliers: and (5) removing burrs on the blank obtained in the step (5), polishing to remove the surface release agent, and drilling a plurality of positioning holes along the periphery to obtain the product.
The present invention is not limited to the specific structure of the above embodiments, and the manufacturing method is not limited to the specific steps of the above method, and other similar structures and equivalent variations of the similar methods are within the scope of the present invention.
Claims (2)
1. The utility model provides a simple and easy presetting mould of dysmorphism curved surface aramid fiber paper honeycomb, includes: the mould body, its characterized in that: the mould body is formed by compounding multiple layers of high-temperature-resistant prepregs, and a plurality of positioning holes for positioning the aramid paper honeycombs are formed in the periphery of the mould body.
2. A manufacturing method of a simple pre-setting die for aramid paper honeycombs with special-shaped curved surfaces comprises the following steps:
a. preparing materials: preparing epoxy resin glass fiber prepreg with proper size;
b. pretreatment of a mold: coating a release agent on the prepared composite material product forming female die;
c. molding: laying prepreg in a forming concave mould of a composite material product, overlapping the prepreg in multiple layers, laying the prepreg layer by layer, forming a shear edge at an uneven part, and staggering the openings of each layer to remove bubbles between layers;
d. and (3) curing: placing demoulding cloth on the surface, vacuumizing and solidifying to a vacuum degree of more than or equal to 0.092 Mpa; the curing process is carried out in two stages: stage 1: temperature: 80 +/-5 ℃, heat preservation time: 1h, stage 2: temperature: 150 +/-5 ℃, heat preservation time: 4 h;
e. demolding: demolding to obtain a blank of the simple pre-shaping mold for the aramid fiber paper honeycomb;
f. repairing pliers: and (5) removing burrs on the blank obtained in the step (5), polishing to remove the surface release agent, and drilling a plurality of positioning holes along the periphery to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010630256.6A CN111716761A (en) | 2020-07-03 | 2020-07-03 | Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010630256.6A CN111716761A (en) | 2020-07-03 | 2020-07-03 | Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111716761A true CN111716761A (en) | 2020-09-29 |
Family
ID=72571428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010630256.6A Pending CN111716761A (en) | 2020-07-03 | 2020-07-03 | Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111716761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103168A (en) * | 2021-11-19 | 2022-03-01 | 哈尔滨工业大学 | Die for preparing composite material curved surface honeycomb structural member and preparation method of structural member |
-
2020
- 2020-07-03 CN CN202010630256.6A patent/CN111716761A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103168A (en) * | 2021-11-19 | 2022-03-01 | 哈尔滨工业大学 | Die for preparing composite material curved surface honeycomb structural member and preparation method of structural member |
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