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 PDF

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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
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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
Application number
CN202010630256.6A
Other languages
Chinese (zh)
Inventor
林静
朱芸霄
易洪林
罗小敏
吴明泰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LINGBAYI ELECTRONIC GROUP SICHUAN TIANYUAN MACHINERY CO Ltd
Original Assignee
LINGBAYI ELECTRONIC GROUP SICHUAN TIANYUAN MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LINGBAYI ELECTRONIC GROUP SICHUAN TIANYUAN MACHINERY CO Ltd filed Critical LINGBAYI ELECTRONIC GROUP SICHUAN TIANYUAN MACHINERY CO Ltd
Priority to CN202010630256.6A priority Critical patent/CN111716761A/en
Publication of CN111716761A publication Critical patent/CN111716761A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping 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
    • B29C70/34Shaping 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
    • B29C70/342Shaping 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/54Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545Perforating, 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

Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof
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.
CN202010630256.6A 2020-07-03 2020-07-03 Special-shaped curved surface aramid fiber paper honeycomb simple pre-setting die and manufacturing method thereof Pending CN111716761A (en)

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

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Application Number Title Priority Date Filing Date
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Country Status (1)

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CN (1) CN111716761A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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