CN109968566A - A kind of equal pressing plate and preparation method thereof - Google Patents
A kind of equal pressing plate and preparation method thereof Download PDFInfo
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- CN109968566A CN109968566A CN201711459945.XA CN201711459945A CN109968566A CN 109968566 A CN109968566 A CN 109968566A CN 201711459945 A CN201711459945 A CN 201711459945A CN 109968566 A CN109968566 A CN 109968566A
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- China
- Prior art keywords
- prepreg
- bogusware
- tooling
- thickness
- release agent
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- 238000003825 pressing Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000005498 polishing Methods 0.000 claims abstract description 16
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 52
- 230000001680 brushing effect Effects 0.000 claims description 15
- 244000137852 Petrea volubilis Species 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 11
- 238000010257 thawing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000004381 surface treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 239000000428 dust Substances 0.000 description 29
- 239000004744 fabric Substances 0.000 description 22
- 239000003292 glue Substances 0.000 description 15
- 229920000049 Carbon (fiber) Polymers 0.000 description 14
- 239000004917 carbon fiber Substances 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000012948 isocyanate Substances 0.000 description 13
- 150000002513 isocyanates Chemical class 0.000 description 13
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 9
- 230000035772 mutation Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000009991 scouring Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical group O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 6
- 229920003192 poly(bis maleimide) Polymers 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 229960000935 dehydrated alcohol Drugs 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000007493 shaping process 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
- B29C33/405—Elastomers, e.g. rubber
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The present invention provides a kind of equal pressing plates and preparation method thereof, this method comprises: by prepreg paving to sample thickness in tooling, and paving obtains bogusware by prepreg and with furnace part bag making and after carrying out the first solidification with furnace part around prepreg；Bogusware is surface-treated；And paving mantle on bogusware after treatment, treated bogusware and mantle are carried out second and solidify and obtain equal pressing plate after demoulding.Bogusware is handled by treatment process such as polishing, Puttying, improves the dimensional accuracy of R angular zone, and is not required in addition manufacture mantle forming frock, manufacturing process is simple, reduces manufacturing cost.
Description
Technical field
The present invention relates to equal pressing plates, more particularly, to a kind of equal pressing plate and preparation method thereof.
Background technique
In composite material preparation process, equal pressing plate is widely used, and especially prepares composite material mistake in autoclave process
In the processes such as pre-compacted, solidification in journey, the use of equal pressing plate can uniformly transmit heat, and make curing rate equal
It is even.
Currently, past come the angle R (circular arc) region when improving deep camber abrupt junction molding component by the method for manufacturing equal pressing plate
Past the defects of there are fiber folds, rich glue, poor glue, and the problem of out pocket face surface quality difference etc., but conventional method manufacture
Equal pressing plate usually requires mantle forming frock, and manufacturing process is complicated, increases manufacturing cost and has to the improvement of problem above
Limit.
Summary of the invention
In view of the above problems, the present invention provides a kind of method for preparing equal pressing plate, this method passes through in exemplar tooling
The bogusware for manufacturing one with exemplar equal thickness by controlling its thickness with furnace part plate, and does not demould after solidifying, in addition, logical
Surface polishing Puttying etc. and sample surface (especially curvature mutation, the angle R at) are crossed unanimously, so that bogusware most rear profile face quality is logical
Cross simple snap-gauge detection.
The present invention provides a kind of methods for preparing equal pressing plate, comprising: by prepreg paving to sample thickness in tooling,
And paving is with furnace part around the prepreg, by the prepreg and described with furnace part bag making and carries out after the first solidification
To bogusware；Bogusware is surface-treated；And paving mantle on bogusware after treatment, it will treated bogusware and the institute
Mantle is stated to carry out the second solidification and obtain equal pressing plate after demoulding.
In above method, it is described surface treatment include with sand paper polish the bogusware surface fold, gum deposit, measurement
The slab-thickness with furnace part is thickened, when the plate when the slab-thickness is less than the sample thickness with Puttying
When thickness is greater than the sample thickness, continue the bogusware of polishing with sand paper.
In above method, by before prepreg paving to sample thickness in tooling, the tooling is pre-processed.
In above method, carrying out pretreatment to the tooling includes brushing multilayer release agent on the surface of the tooling.
In above method, the brushing direction of every layer of release agent is intersected with each other, after having brushed every layer of release agent,
The every layer of release agent brushed is dried into >=20min at normal temperature, after having brushed the multilayer release agent, by what is brushed
>=40min is dried in multilayer release agent at normal temperature.
In above method, before pre-processing to the tooling, thaw the prepreg and to the preimpregnation
Material carries out blanking.
In above method, the temperature for the prepreg that thaws is 15~25 DEG C, and the time for the prepreg that thaws is pre-
Soak thickness (as unit of mm) * (1~1.5mm)/10min of material.
In above method, the first cured temperature is 150~200 DEG C, and the first cured time is 2~6
Hour and the first cured pressure are normal pressure.
In above method, the second cured temperature is 150~200 DEG C, and the second cured time is 2~6
Hour and the second cured pressure are 0.5~1MPa.
The present invention also provides a kind of equal pressing plates prepared according to above method.
The present invention passes through the treatment process such as polishing, Puttying by manufacture bogusware, to bogusware, makees mantle shaping mould with bogusware
Tool, is not required in addition manufacture mantle forming frock, increases the dimensional accuracy of R angular zone, manufacturing process is simple and reduces system
Cause this.
Detailed description of the invention
Fig. 1 is the process flow chart for manufacturing equal pressing plate.
Specific embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but not limit in any way
The present invention.
The present invention provides a kind of methods for manufacturing equal pressing plate, method includes the following steps:
One, defrosting prepreg
By prepreg (including but not limited to carbon fiber prepreg, isocyanates prepreg and/or bimaleimide resin
Prepreg) be placed in 15~25 DEG C at a temperature of thaw, thawing time=prepreg thickness (cm) * (1~1.5)/10min, until
The outer evaporated condensation water of packaging bag, then show to thaw complete；The defrosting of prepreg provides preferable original for the preparation of following equal pressing plate
Material, if temperature is too low or thawing time is too short, prepreg is not easy to thaw completely, in compacting, is easy to produce crackle；Such as
Fruit thaw point is excessively high or overlong time, will cause detrimental effect to the performance of prepreg.
Two, blanking
Prepreg is unfolded according to product digital-to-analogue, with automatic blanking machine (e.g., carbon fiber prepreg automatic blanking machine)
Blanking.
Three, tooling is pre-processed
Confirm that tooling surface whether there is sundries and rusty stain, if it is present removing rusty stain with rust remover and scouring pad, so
The dust and other impurities on tooling surface are removed with non-dust cloth afterwards, then dip organic solvent (including but not limited to anhydrous second with non-dust cloth
Alcohol, acetone and/or isopropanol) tooling surface is cleaned, the equal pressing plate that tooling clean surface is prepared after can effectively ensure that
R angular zone dimensional accuracy；
After clean tooling surface organic solvent volatilization (that is, last terminates 30-50min all over wiping organic solvent),
Start to brush release agent (purchased from Shenzhen An Li Environmental Protection Technology Co., Ltd) (band emgloves operates), be dipped with non-dust cloth de-
Mould agent is brushed on tooling surface, and brushing 3~6 times, (new tooling is brushed 5-6 times, and used tooling is brushed 3-4 times, if work
Dress is then calculated by new tooling by being sanded), every layer of release agent is brushed uniformly, and each general direction is intersected, it is ensured that is brushed equal
It is even, if release agent applies excessively, wiped from tooling with non-dust cloth, every layer of release agent brushing finishes at least dry at normal temperature
Dry 20min has applied the last layer release agent, and the release agent brushed dry at least 40min in air is made under room temperature；It brushes
Release agent guarantees live well-ventilated, and brushing is finished and recorded, and the mode of the brushing release agent and drying time fully ensure that
The uniformity of release agent in tooling, the dimensional accuracy of the R angular zone of the equal pressing plate prepared after can further increasing.
Four, bogusware paving
Paving prepreg is to sample thickness the thickness of exemplar (i.e. needed for) in pretreated tooling, and around prepreg
Paving thickness measuring is with furnace part, vacuum debulk, bag making, with the thickness for being affixed with the prepreg conducive to measurement paving of furnace part.
Five, bogusware solidifies
Solidify 2~6 hours in 150~200 DEG C of baking oven under normal pressure.
Six, bogusware is surface-treated
Bogusware does not demould, and with sand paper polishing product surface fold, gum deposit measures with furnace part slab-thickness, works as slab-thickness
Than exemplar actual thickness hour, then thickened with Puttying；When slab-thickness is bigger than exemplar actual thickness, then polished with sand paper false
Part guarantees the angle R and the curvature mutation position shape of bogusware, until slab-thickness is equal to sample thickness, and until bogusware is last
Type face quality is detected by simple snap-gauge, the bogusware handled well, in this step, makees mantle molding die with bogusware, is led to
The treatment process such as polishing, Puttying are crossed to handle bogusware, improve the dimensional accuracy of R angular zone and improve R angular zone
The defects of fold, rich glue, poor glue, and be not required in addition manufacture mantle forming frock, manufacturing process is simple, reduce manufacture at
This.
Seven, mantle paving
Two layers of Airpad of paving (a kind of unvulcanized rubber) mantle on the bogusware handled well is used between Airpad mantle
Prepreg enhancing, further improves the dimensional accuracy of R angular zone.
Eight, solidify
Under the pressure of 0.5~1MPa, solidify 2~6 hours in 150~200 DEG C of autoclave.
Nine, it demoulds
The product being cured carefully is demoulded, the residue glue at edge is cleared up, obtains equal pressing plate.
Embodiment 1
Carbon fiber prepreg is placed at a temperature of 20 DEG C and is thawed, thawing time is the thickness * 1.2/ of carbon fiber prepreg
10min, until the outer evaporated condensation water of packaging bag；Then carbon fiber prepreg is unfolded according to product digital-to-analogue, uses automatic blanking
Machine blanking.
The rusty stain that tooling surface is removed with rust remover and scouring pad, it is miscellaneous then to remove the dust on tooling surface etc. with non-dust cloth
Object, then dip acetone with non-dust cloth and tooling surface is cleaned；
After the volatilization of the acetone on clean tooling surface, release agent is dipped with non-dust cloth, is brushed on tooling surface, it should
Tooling is new tooling, therefore brushes 5 times release agents, and every layer of release agent is brushed uniformly, and each general direction is intersected, and every layer de-
Mould agent brushing finishes dry 20min, has applied the last layer release agent, dries 40min in air；
Paving carbon fiber prepreg to sample thickness, and around carbon fiber prepreg, survey by paving in pretreated tooling
Thickness is with furnace part, vacuum debulk, bag making, solidifies 4 hours in lower 180 DEG C of the baking oven of normal pressure；
With sand paper polishing product surface fold, gum deposit, measurement is with furnace part slab-thickness, by measuring it is found that slab-thickness
It is smaller than exemplar actual thickness, it is thickened with Puttying, guarantees the angle R and the curvature mutation position shape of bogusware, until slab-thickness etc.
In sample thickness, and until bogusware most rear profile face quality is detected by simple snap-gauge (that is, the dimensional accuracy in type face reaches 0.02
Within), the bogusware handled well；
Two layers of Airpad mantle of paving on the bogusware handled well is enhanced with carbon fiber prepreg between Airpad mantle,
Under the pressure of 0.7MPa, solidify 4 hours in 180 DEG C of autoclave；
Later, the product being cured carefully is demoulded, clears up the residue glue at edge, obtain equal pressing plate.
Embodiment 2
Isocyanates prepreg is placed at a temperature of 20 DEG C and is thawed, thawing time is the thickness * of isocyanates prepreg
1.2/10min, until the outer evaporated condensation water of packaging bag；Then isocyanates prepreg is unfolded according to product digital-to-analogue, with certainly
Dynamic blanking machine blanking.
The rusty stain that tooling surface is removed with rust remover and scouring pad, it is miscellaneous then to remove the dust on tooling surface etc. with non-dust cloth
Object, then dip dehydrated alcohol with non-dust cloth and tooling surface is cleaned；
After the volatilization of the dehydrated alcohol on clean tooling surface, release agent is dipped with non-dust cloth, is brushed on tooling surface
It applies, which is used tooling, therefore 3 times release agents, every layer of release agent are brushed uniformly, and each general direction is handed over
Fork, every layer of release agent brushing finish dry 30min, have applied the last layer release agent, dried 50min in air；
Paving isocyanates prepreg is to sample thickness in pretreated tooling, and spreads around isocyanates prepreg
Thickness measuring is pasted with furnace part, vacuum debulk, bag making solidifies 5 hours in lower 190 DEG C of the baking oven of normal pressure；
With sand paper polishing product surface fold, gum deposit, measurement is with furnace part slab-thickness, by measuring it is found that slab-thickness
It is bigger than exemplar actual thickness, then with sand paper polishing bogusware, guarantee the angle R and the curvature mutation position shape of bogusware, until plate is thick
Degree be equal to sample thickness, and until bogusware most rear profile face quality detected by simple snap-gauge, the bogusware handled well；
Two layers of Airpad mantle of paving on the bogusware handled well is increased with isocyanates prepreg between Airpad mantle
By force, under the pressure of 0.8MPa, solidify 5 hours in 170 DEG C of autoclave；
Later, the product being cured carefully is demoulded, clears up the residue glue at edge, obtain equal pressing plate.
Embodiment 3
Bimaleimide resin prepreg is placed at a temperature of 20 DEG C and is thawed, thawing time is bismaleimide tree
The thickness * 1.2/10min of rouge prepreg, until the outer evaporated condensation water of packaging bag；Then according to product digital-to-analogue to bismaleimide
Resin prepreg material is unfolded, with automatic blanking machine blanking.
The rusty stain that tooling surface is removed with rust remover and scouring pad, it is miscellaneous then to remove the dust on tooling surface etc. with non-dust cloth
Object, then dip isopropanol with non-dust cloth and tooling surface is cleaned；
After the volatilization of the isopropanol on clean tooling surface, release agent is dipped with non-dust cloth, is brushed on tooling surface,
The tooling is new tooling, therefore brushes 5 times release agents, and every layer of release agent is brushed uniformly, and each general direction is intersected, every layer
Release agent brushing finishes dry 20min, has applied the last layer release agent, dries 40min in air；
Paving bimaleimide resin prepreg is to sample thickness in pretreated tooling, and in bismaleimide
Paving thickness measuring is with furnace part around resin prepreg material, vacuum debulk, bag making, solidifies 6 hours in lower 150 DEG C of the baking oven of normal pressure；
With sand paper polishing product surface fold, gum deposit, measurement is with furnace part slab-thickness, by measuring it is found that slab-thickness
It is smaller than exemplar actual thickness, it is thickened with Puttying, guarantees the angle R and curvature mutation position shape, until slab-thickness is equal to exemplar
Thickness, and until bogusware most rear profile face quality detected by simple snap-gauge, the bogusware handled well；
Two layers of Airpad mantle of paving on the bogusware handled well, it is pre- with bimaleimide resin between Airpad mantle
Leaching material enhancing, under the pressure of 0.7MPa, solidifies 4 hours in 180 DEG C of autoclave；
Later, the product being cured carefully is demoulded, clears up the residue glue at edge, obtain equal pressing plate.
Embodiment 4
Carbon fiber prepreg is placed at a temperature of 15 DEG C and is thawed, thawing time is the thickness * 1.5/ of carbon fiber prepreg
10min, until the outer evaporated condensation water of packaging bag；Then carbon fiber prepreg is unfolded according to product digital-to-analogue, uses automatic blanking
Machine blanking.
The rusty stain that tooling surface is removed with rust remover and scouring pad, it is miscellaneous then to remove the dust on tooling surface etc. with non-dust cloth
Object, then dip acetone with non-dust cloth and tooling surface is cleaned；
After the volatilization of the acetone on clean tooling surface, release agent is dipped with non-dust cloth, is brushed on tooling surface, it should
Tooling is new tooling, therefore brushes 6 times release agents, and every layer of release agent is brushed uniformly, and each general direction is intersected, and every layer de-
Mould agent brushing finishes dry 20min, has applied the last layer release agent, dries 40min in air；
Paving carbon fiber prepreg to sample thickness, and around carbon fiber prepreg, survey by paving in pretreated tooling
Thickness is with furnace part, vacuum debulk, bag making, solidifies 2 hours in lower 200 DEG C of the baking oven of normal pressure；
With sand paper polishing product surface fold, gum deposit, measurement is with furnace part slab-thickness, by measuring it is found that slab-thickness
It is smaller than exemplar actual thickness, it is thickened with Puttying, guarantees the angle R and the curvature mutation position shape of bogusware, until slab-thickness etc.
In sample thickness, and until bogusware most rear profile face quality detected by simple snap-gauge, the bogusware handled well；
Two layers of Airpad mantle of paving on the bogusware handled well is enhanced with carbon fiber prepreg between Airpad mantle,
Under the pressure of 0.5MPa, solidify 6 hours in 150 DEG C of autoclave；
Later, the product being cured carefully is demoulded, clears up the residue glue at edge, obtain equal pressing plate.
Embodiment 5
Isocyanates prepreg is placed at a temperature of 25 DEG C and is thawed, thawing time is the thickness * of isocyanates prepreg
1/10min, until the outer evaporated condensation water of packaging bag；Then isocyanates prepreg is unfolded according to product digital-to-analogue, with automatic
Blanking machine blanking.
The rusty stain that tooling surface is removed with rust remover and scouring pad, it is miscellaneous then to remove the dust on tooling surface etc. with non-dust cloth
Object, then dip dehydrated alcohol with non-dust cloth and tooling surface is cleaned；
After the volatilization of the dehydrated alcohol on clean tooling surface, release agent is dipped with non-dust cloth, is brushed on tooling surface
It applies, which is used tooling, therefore 4 times release agents, every layer of release agent are brushed uniformly, and each general direction is handed over
Fork, every layer of release agent brushing finish dry 50min, have applied the last layer release agent, dried 70min in air；
Paving isocyanates prepreg is to sample thickness in pretreated tooling, and spreads around isocyanates prepreg
Thickness measuring is pasted with furnace part, vacuum debulk, bag making solidifies 5 hours in lower 190 DEG C of the baking oven of normal pressure；
With sand paper polishing product surface fold, gum deposit, measurement is with furnace part slab-thickness, by measuring it is found that slab-thickness
It is bigger than exemplar actual thickness, then with sand paper polishing bogusware, guarantee the angle R and the curvature mutation position shape of bogusware, until plate is thick
Degree be equal to sample thickness, and until bogusware most rear profile face quality detected by simple snap-gauge, the bogusware handled well；
Two layers of Airpad mantle of paving on the bogusware handled well is increased with isocyanates prepreg between Airpad mantle
By force, under the pressure of 0.6MPa, solidify 2 hours in 200 DEG C of autoclave；
Later, the product being cured carefully is demoulded, clears up the residue glue at edge, obtain equal pressing plate.
Embodiment 6
Bimaleimide resin prepreg is placed at a temperature of 20 DEG C and is thawed, thawing time is bismaleimide tree
The thickness * 1.2/10min of rouge prepreg, until the outer evaporated condensation water of packaging bag；Then according to product digital-to-analogue to bismaleimide
Resin prepreg material is unfolded, with automatic blanking machine blanking.
The rusty stain that tooling surface is removed with rust remover and scouring pad, it is miscellaneous then to remove the dust on tooling surface etc. with non-dust cloth
Object, then dip isopropanol with non-dust cloth and tooling surface is cleaned；
After the volatilization of the isopropanol on clean tooling surface, release agent is dipped with non-dust cloth, is brushed on tooling surface,
The tooling is new tooling, therefore brushes 6 times release agents, and every layer of release agent is brushed uniformly, and each general direction is intersected, every layer
Release agent brushing finishes dry 20min, has applied the last layer release agent, dries 40min in air；
Paving bimaleimide resin prepreg is to sample thickness in pretreated tooling, and in bismaleimide
Paving thickness measuring is with furnace part around resin prepreg material, vacuum debulk, bag making, solidifies 4 hours in lower 180 DEG C of the baking oven of normal pressure；
With sand paper polishing product surface fold, gum deposit, measurement is with furnace part slab-thickness, by measuring it is found that slab-thickness
It is smaller than exemplar actual thickness, it is thickened with Puttying, guarantees the angle R and curvature mutation position shape, until slab-thickness is equal to exemplar
Thickness, and until bogusware most rear profile face quality detected by simple snap-gauge, the bogusware handled well；
Two layers of Airpad mantle of paving on the bogusware handled well, it is pre- with bimaleimide resin between Airpad mantle
Leaching material enhancing, under the pressure of 1MPa, solidifies 4 hours in 180 DEG C of autoclave；
Later, the product being cured carefully is demoulded, clears up the residue glue at edge, obtain equal pressing plate.
The angular region R of the equal pressing plate obtained in snap-gauge detection method measurement embodiment 1 to embodiment 6 commonly used in the art
The result of the dimensional accuracy in domain and the defect for observing R angular zone, measurement and observation is as shown in table 1 below:
Table 1
By upper table 1 it is found that the dimensional accuracy of the R angular zone of equal pressing plate prepared by the method for the present invention can reach 0.01
± 0.002mm, and overcome R angular zone and have the defects that fiber fold, rich glue, poor glue etc..This is because in the present invention
Mantle molding die is made with bogusware, and handles bogusware by treatment process such as polishing, Puttying, improves the pressure of preparation
The dimensional accuracy of the R angular zone of plate, and overcome R angular zone and have the defects that fiber fold, rich glue, poor glue etc.；Meanwhile
In the present invention, it is not required in addition manufacture mantle forming frock, manufacturing process is simple, reduces manufacturing cost.
It will be understood by those skilled in the art that above embodiments are only exemplary embodiments, without departing substantially from spirit of the invention
In the case where range, a variety of variations can be carried out, replaced and changed.
Claims (10)
1. a kind of method for preparing equal pressing plate characterized by comprising
By prepreg paving to sample thickness in tooling, and paving is with furnace part around the prepreg, by the preimpregnation
Material obtains bogusware with furnace part bag making and after carrying out the first solidification with described；
Bogusware is surface-treated；And
Paving mantle on bogusware after treatment, by treated the bogusware and the mantle carry out second solidify and demould after
Obtain equal pressing plate.
2. the method according to claim 1, wherein the surface treatment includes being polished the bogusware with sand paper
Fold, the gum deposit on surface, the measurement slab-thickness with furnace part are used when the slab-thickness is less than the sample thickness
Puttying thickens, and when the slab-thickness is greater than the sample thickness, continues the bogusware of polishing with sand paper.
3. the method according to claim 1, wherein by before prepreg paving to sample thickness in tooling,
The tooling is pre-processed.
4. according to the method described in claim 3, it is characterized in that, carrying out pretreatment to the tooling includes in the tooling
Brush multilayer release agent in surface.
5. according to the method described in claim 4, brushing it is characterized in that, the brushing direction of every layer of release agent is intersected with each other
After complete every layer of release agent, the every layer of release agent brushed is dried into >=20min at normal temperature, is brushing the multilayer
After release agent, >=40min is dried into the multilayer release agent brushed at normal temperature.
6. according to the method described in claim 3, it is characterized in that, before being pre-processed to the tooling, described in defrosting
Prepreg and to the prepreg carry out blanking.
7. according to the method described in claim 6, it is characterized in that, the temperature for the prepreg that thaws be 15~25 DEG C, thaw
The time of the prepreg is thickness * (1~1.5mm)/10min of prepreg.
8. the method according to claim 1, wherein the first cured temperature be 150~200 DEG C, it is described
First cured time was 2~6 hours and the first cured pressure is normal pressure.
9. the method according to claim 1, wherein the second cured temperature be 150~200 DEG C, it is described
Second cured time was 2~6 hours and the second cured pressure is 0.5~1MPa.
10. the equal pressing plate of method preparation according to any one of claim 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111086237A (en) * | 2019-11-22 | 2020-05-01 | 江苏恒神股份有限公司 | Forming method of carbon fiber composite material flow guide shell |
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Application publication date: 20190705 |