CN107214979A - A kind of method for improving resin transfer molding (RTM) process forming composite yield rate - Google Patents
A kind of method for improving resin transfer molding (RTM) process forming composite yield rate Download PDFInfo
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- CN107214979A CN107214979A CN201710500185.6A CN201710500185A CN107214979A CN 107214979 A CN107214979 A CN 107214979A CN 201710500185 A CN201710500185 A CN 201710500185A CN 107214979 A CN107214979 A CN 107214979A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C70/36—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 impregnating by casting, e.g. vacuum casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/0277—Apparatus with continuous transport of the material to be cured
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to polymer matrix composites liquid condition shaping technology, it is related to a kind of method for improving resin transfer molding (RTM) process forming composite yield rate.The present invention between resin hold-up tank and mould by increasing resin heater, reduce the injection temperature of resin in resin hold-up tank, reduce the risk of resin implode in resin hold-up tank, extend effective injection phase of resin, and the injection temperature and injection viscosity of resin are accurately controlled, significantly improve the Forming Quality of composite material parts.
Description
Technical field
The invention belongs to polymer matrix composites liquid condition shaping technology, it is related to a kind of resin transfer molding (RTM) process that improves and is molded
The method of composite finished product rate.
Background technology
Carbon fiber enhancement resin base composite material have lightweight, high specific strength, high ratio modulus, fatigue crack-resistant performance it is good,
Advantage that is corrosion-resistant, being easy to the uniqueness such as large area monolithic molding, is widely used to aviation aircraft and engine structure, turns into
The critical material of aircraft equipment, its consumption has also turned into one of advanced mark of aircraft equipment.
Resin transfer molding forming technique, abbreviation RTM forming techniques (Resin Transfer Molding) are in recent years
In a kind of wide variety of liquid condition shaping composite material manufacturing technology in the fields such as Aeronautics and Astronautics.Its principle is in rigid die type
Intracavitary, which is laid, presses performance and the designed dry state fiber preform body of structural requirement, is resin hold-up tank in specific pressure vessel
Low viscosity resin, is then injected into mold cavity, made by the interior injection temperature that resin is heated to setting using injection device
Resin fully infiltrates with fiber, finally carries out elevated cure according to the technological specification of resin, finally obtains and die profile
Consistent composite material parts.In order to ensure that resin being capable of quick and complete injection part, the tree generally under the injection temperature of setting
Fat has relatively low viscosity, is generally not more than 300cp, and 100cp can be less than when more.But under low viscosity state, heat
The resin of solidity has certain reactivity, and slow reaction and heat release, resin storage are started with the progress of deaeration and injection
Tank is unfavorable for radiating for the container that pressure-resistant and insulation is typically designed to thicker closing, therefore the temperature of the resin in resin hold-up tank
Degree can slowly be raised with the progress of deaeration and injection, and the self-accelerating reaction phenomenon of resin can be with tree in this resin hold-up tank
The increase of fat consumption and become apparent from, when the temperature of resin reaches critical value, the quick-fried of resin will occur in resin hold-up tank
Poly- phenomenon, can not only cause part rejection, device damage, and security incident occurs.As RTM techniques are led in Aero-Space
Domain it is widely used, when being molded the Aero-Space composite element of large-size, it is necessary to disposable more resin,
The risk of resin implode can greatly increase in resin hold-up tank.
In addition, the viscosity that self-accelerating reaction phenomenon of the resin in resin hold-up tank also results in resin rises, so as to drop
Low seepage velocity of the resin to preform, the front and rear variation phenomenon of this resin viscosity can be caused to the shaping of part can not
The risk of control, causes the percent defective of part to raise.
Again, when resin is imitated in short-term using some special high temperature high tenacity, such as Hexcel companies
The PR520 of RTM230ST or Cytec companies, because the injection temperature of the type resin is higher (more than 160 DEG C), and solidification temperature
Only 180 DEG C, reactivity of the resin under injection temperature is very high, higher compared to usual resins implode risk, while the type
Effective injection phase of resin is extremely short (in 35min), and effective note of resin can be further shortened using conventional resin deaeration technique
The phase is penetrated, the difficulty of forming part is substantially increased.
The content of the invention
The purpose of the present invention is：The deficiency existed for conventional resins transfer molding forming composite technology, proposes one
Plant the method for improving resin transfer molding (RTM) process forming composite yield rate.
The technical solution of the present invention is that the system includes mould, resin, resin hold-up tank, resin and overflowed
Tank, vacuum source and pressure source, connect resin thermostat between resin hold-up tank and mould, and methods described comprises the following steps：
1) prepare resin thermostat, include closed cavity inside the resin thermostat, the height of cavity for 0.1~
2mm, width is 10mm~500mm, and length is 20mm~500mm；The resin thermostat is using oil heating, electrical heating or steam
The form of heating carries out thermostatic control to cavity, and the material of cavity is metal material；The resin thermostat is resistant to technique
The maximum injection pressure and highest injection temperature of setting and it is air tight indeformable；
2) pressure source, resin hold-up tank, valve, resin thermostat, valve, mould, valve, resin are overflowed into tank and vacuum
Source is sequentially connected using pipeline, and valve, valve and valve are closed；
3) the heating temperature-viscosity curve of reference resin, T1 is increased to by the temperature of resin hold-up tank, under temperature T1,
The viscosity of resin is in the range of 300cp~500cp；The temperature of mould is increased to T2, under temperature T2, the viscosity of resin exists
In the range of 60cp~150cp；The temperature of resin thermostat is increased to T3, under temperature T3, the viscosity of resin 60cp~
In the range of 150cp；
4) resin prepared is poured into resin hold-up tank, and deaeration processing is carried out to resin；
5) vacuum source, valve and valve are opened, overflowing tank to mould, resin thermostat and resin carries out vacuumize process；
6) after resin deaeration is disposed, pressure source is opened, according to the output of technique adjustment pressure source set in advance
Pressure value, opens valve, the resin in resin hold-up tank is flowed through resin thermostat and is injected into mould；
7) after resin spilling tank begins with resin spilling, valve, valve and valve are closed successively, according to the technique of resin
It is required that carrying out elevated cure to mould and obtaining final part.
Cavity is using the good metal material manufacture of thermal conductivity, such as steel, copper, aluminium and its alloy.
The temperature T1 ＜ temperature T2.
Temperature T3 >=temperature the T2, the viscosity of viscosity of the resin under temperature T3≤under temperature T2.
The advantages of the present invention are：
1st, the present invention reduces the temperature of resin in resin hold-up tank by increasing resin thermostat, at a lower temperature
The reactivity of resin is relatively low, and self-accelerating reaction phenomenon is greatly suppressed, and reduces the risk of resin implode, improves resin
The yield rate of transfer modling technological forming composite；
2nd, the present invention reduces in resin hold-up tank the temperature of resin by increasing resin thermostat but maintained rational
In range of viscosities, the deaeration effect of resin not but not is not influenceed, but also the inclined heated plate of resin can be extended, further drop
Ratio containing gas in low resin；
3rd, the temperature T3 of resin thermostat involved in the present invention be equal to or a little higher than mould injection temperature T2, but control
In the upper limit of the injectable temperature range of resin, the resin for flowing through resin thermostat is safe and reliable；
4th, resin thermostat involved in the present invention using the method for the physics heat conduction of thin cavity large contact surface to flowing through
Resin is quickly heated, and not only required amount of resin is few, wastes few, and the method safety of physics heat conduction is reliable；
5th, the present invention hardly influences the injection operation phase of resin under lower temperature conditions on resin deaeration, can make
Effective operation phase of resin is employed entirely in part injection process, extends effective injection time of part, reducing resin has
The effect operation phase inadequate risk for causing part not injected completely and producing waste product, improves RTM technological forming composite finished products
Rate；
6th, the present invention is especially suitable for quick RTM moulding process or high temperature RTM moulding process, the resin of quick RTM technique
Operating time is extremely short, requires higher to effective operation phase of resin；And the resin injection temperature of high temperature RTM techniques is higher, implode
Risk is more than common RTM techniques；
7th, resin thermostat designability of the present invention is good, and the material to cavity can be required according to the heating of resin
Selected and designed with structure, can also be in the range of the injection temperature of resin to mould injection temperature T2 and resin thermostat
Temperature T3 is designed；
8th, the present invention implements simple, it is thus only necessary to increase resin thermostat, be not required to existing RTM process equipments and
Mould is transformed, with good RTM technique universalities；
In summary, the present invention reduces resin by increasing resin heater between resin hold-up tank and mould
The injection temperature of resin in hold-up tank, reduces the risk of resin implode in resin hold-up tank, extends effective injection of resin
Phase, and the injection temperature and injection viscosity of resin are accurately controlled, significantly improve the Forming Quality of composite material parts.This hair
It is bright to propose a kind of method for improving resin transfer molding (RTM) process forming composite yield rate, reduce rtm resin quick-fried
Poly- risk, extends effective operation phase of resin, implements simple and reliable, can significantly improve RTM forming composite products
Yield rate.
The present invention operation principle be：
1st, the present invention is carrying out deaeration under lower temperature T1 to resin 11, and the reactivity of resin 11 is relatively low, improves
Use the security of resin 11；
2nd, resin thermostat 5 involved in the present invention uses the method convection current of the physics heat conduction of metal foil cavity large contact surface
Resin through resin thermostat is quickly heated, and heat exchange efficiency is high, the quick heating of resin 11 and uniform；The chamber of resin thermostat 5
The physical dimension of body 6 can be according to the initial temperature T1 of resin 11, the injection temperature T2 of resin 11, the flow of resin 11, resin
The parameter such as coefficient of heat transfer of metal used in 11 coefficient of heat transfer, cavity 6 calculates the minimal-contact area of cavity 6, therefore cavity 6
Thickness and area can be designed according to the technological requirement of resin 11；
3rd, the temperature T3 of resin thermostat 5 involved in the present invention can be more than or equal to the temperature T2 of mould 4, when resin 11
From the relative value that temperature T1 is quickly ramped up to temperature T2, it is necessary to which the heat energy exchanged is less when smaller, the heat-energy transducer that cavity 6 is provided is enough
Many, then the temperature T3 of resin thermostat 5 and the temperature T2 of mould 4 are equal；And when resin 11 is quickly ramped up to temperature from temperature T1
, it is necessary to which the heat energy exchanged is more, if the contact area of cavity 6 is not big enough when degree T2 relative value is larger, it is impossible to provide and exchange enough
During heat energy, the temperature T3 of resin thermostat 5 can be made to be slightly above injection temperature T2, the commutative heat energy of cavity 6 is improved, finally make
Resin 11 reaches T2 in the outlet temperature of resin thermostat 5.
Brief description of the drawings
The schematic diagram for the RTM forming methods that Fig. 1 uses for the present invention；
The schematic diagram of the contact surface for the resin thermostat that Fig. 2 uses for the present invention；
Embodiment
The present invention is a kind of method for improving resin transfer molding (RTM) process forming composite yield rate, and the system includes
Mould 4, resin 11, resin hold-up tank 30, resin overflow tank 20, vacuum source 60 and pressure source 70, it is characterised in that：In tree
Resin thermostat 5 is connected between fat hold-up tank 30 and mould 4, methods described comprises the following steps：
1) resin thermostat 5 is prepared, the inside of resin thermostat 5 includes closed cavity 6, and the height of cavity 6 is 0.1
~2mm, width is 10mm~500mm, and length is 20mm~500mm；The resin thermostat 5 using oil heating, electrical heating or
Steam-heated form carries out thermostatic control to cavity 6, and the material of cavity 6 is metal material；The resin thermostat 5 can be resistant to
It is air tight indeformable by the maximum injection pressure and highest injection temperature of technique initialization；
2) by pressure source 70, resin hold-up tank 30, valve 40, resin thermostat 5, valve 41, mould 4, valve 42, resin
Overflow tank 20 and vacuum source 60 to be sequentially connected using pipeline 10, valve 40, valve 41 and valve 42 are closed；
3) the heating temperature-viscosity curve of reference resin 11, T1 is increased to by the temperature of resin hold-up tank 30, in temperature T1
Under, the viscosity of resin 11 is in the range of 300cp~500cp；The temperature of mould 4 is increased to T2, under temperature T2, resin 11
Viscosity is in the range of 60cp~150cp；The temperature of resin thermostat 5 is increased to T3, under temperature T3, the viscosity of resin 11 exists
In the range of 60cp~150cp；
4) resin 11 prepared is poured into resin hold-up tank 30, and deaeration processing is carried out to resin 11；
5) vacuum source 60, valve 41 and valve 42 are opened, overflowing tank 20 to mould 4, resin thermostat 5 and resin takes out
Application of vacuum；
6) after the deaeration of resin 11 is disposed, pressure source 70 is opened, according to technique adjustment pressure source 70 set in advance
Output pressure value, open valve 40, the resin 11 in resin hold-up tank 30 is flowed through resin thermostat 5 and is entered into mould 4
Row injection；
7) after resin spilling tank 20 begins with the spilling of resin 11, valve 42, valve 41 and valve 40 are closed successively, according to
The technological requirement of resin 11 carries out elevated cure to mould 4 and obtains final part.
Cavity 6 is using the good metal material manufacture of thermal conductivity, such as steel, copper, aluminium and its alloy.
The temperature T1 ＜ temperature T2.
Temperature T3 >=temperature the T2, the viscosity of viscosity of the resin 11 under temperature T3≤under temperature T2.
Embodiment 1
Part is the open three cells segment structure of composite.Material system is CF3031/BA9914, the fiber volume of material
Content is 55% ± 3%；Wherein CF3031 is the T300 grade carbon fiber fabrics that the specification that Weihai in Shandong province expands company's product is 3K,
BA9914 resins are outside the High temperature epoxy resinses that AirChina Composite Materials Co., Ltd. is liquid molding process research and development, part
Shape size is：2000mm × 1002mm × 200mm (length × width × height), part wall thickness is 6mm, wherein middle three interior chamber sizes
For 2000mm × 250mm × 182mm, chamber size is 2000mm × 120mm × 182mm in both sides, and BA9914 trees are needed according to calculating
Fat 20kg；Resin thermostat 5 is pre-processed, and the size of wherein cavity 6 is：300mm × 100mm × 1mm (length × width × height),
Material is 45# steel.Specific implementation step is as follows：
1) by pressure source 70, resin hold-up tank 30, valve 40, resin thermostat 5, valve 41, mould 4, valve 42, resin
Overflow tank 20 and vacuum source 60 to be sequentially connected using pipeline 10, valve 40, valve 41 and valve 42 are closed；
2) temperature of resin hold-up tank 30 is increased to 65 DEG C, the temperature of mould 4 is risen to 80 DEG C, by resin thermostat 5
Temperature rise to 80 DEG C；
3) the BA9914 resins configured are poured into resin hold-up tank 30, maintains the temperature of resin hold-up tank 30 65
DEG C, vacuumizing and defoaming processing 30min is carried out to BA9914 resins；
4) vacuum source 60, valve 41 and valve 42 are opened, overflowing tank 20 to mould 4, resin thermostat 5 and resin takes out
Application of vacuum 10min；
5) pressure source 70 is opened, 0.4MPa pressure is applied to the BA9914 resins in resin hold-up tank 30, valve 40 is opened,
BA9914 resins begin flow through resin thermostat 5 and injected into mould 4, and the outlet of resin thermostat 5 is obtained through monitoring
The temperature of BA9914 resins is 79.6 DEG C；
6) about after 45min, resin overflows tank 20 and begins with BA9914 resins spilling, and valve 42, the and of valve 41 are closed successively
Valve 40, is heated up to mould 4, and 4h is incubated under the conditions of 180 DEG C, is solidified and is obtained final part.
The presentation quality of part, internal soundness are satisfied by design requirement after testing.
Embodiment 2
Part is that composite 2.5D weaves fan balde structure.Material system is CCF800/PR520, the fiber of material
Volume content is 55% ± 3%；Wherein CCF800 is that the T800 levels carbon that the specification that Weihai in Shandong province expands company's product is 12K is fine
Dimension, PR520 resins are the high temperature high-toughness epoxy resin of Cytec companies, and the appearance and size of part is：700mm × 500mm (long ×
It is wide), thickness is gradually changed to blade tip 1.5mm from tenon 60mm, and PR520 resins 10kg is needed according to calculating；Resin thermostat 5 is advance
Process, the size of wherein cavity 6 is：500mm × 100mm × 0.3mm (length × width × height), material is P20 steel.Specific implementation
Step is as follows：
1) by pressure source 70, resin hold-up tank 30, valve 40, resin thermostat 5, valve 41, mould 4, valve 42, resin
Overflow tank 20 and vacuum source 60 to be sequentially connected using pipeline 10, valve 40, valve 41 and valve 42 are closed；
2) temperature of resin hold-up tank 30 is increased to 110 DEG C, the temperature of mould 4 is risen to 170 DEG C, by resin thermostat
5 temperature rises to 168 DEG C；
3) PR520 resins are poured into resin hold-up tank 30, the temperature of resin hold-up tank 30 is maintained at 110 DEG C, to PR520
Resin carries out vacuumizing and defoaming processing 30min；
4) vacuum source 60, valve 41 and valve 42 are opened, overflowing tank 20 to mould 4, resin thermostat 5 and resin takes out
Application of vacuum 20min；
5) pressure source 70 is opened, 1.0MPa pressure is applied to the PR520 resins in resin hold-up tank 30, valve 40 is opened,
PR520 resins begin flow through resin thermostat 5 and injected into mould 4, and the outlet of resin thermostat 5 is obtained through monitoring
The temperature of PR520 resins is 169.2 DEG C；
6) about after 10min, resin overflows tank 20 and begins with PR520 resins spilling, and valve 42, valve 41 and valve are closed successively
Door 40, heats up to mould 4,2h is incubated under the conditions of 180 DEG C, solidify and obtain final part.
The presentation quality of part, internal soundness are satisfied by design requirement after testing.
Embodiment 3：
Part is the non-open three chambers airfoil structure of composite.Material system is U-3160/QY8911-4, the fiber of material
Volume content is 56% ± 3%；Wherein U-3160 is the T300 grade carbon fibers that the specification that Weihai in Shandong province expands company's product is 3K
Fabric, QY8911-4 resins are the high temperature bismaleimide resin that AirChina Composite Materials Co., Ltd. is liquid molding process research and development,
The appearance and size of part is：500mm × 1002mm (long × wide), side is highly 300mm, and side is highly 0mm, part wall thickness
For 6mm, wherein in the middle of three interior chamber sizes be in 500mm × 250mm × 282mm, both sides chamber size be 500mm × 120mm ×
282mm, QY8911-4 resins 30kg is needed according to calculating；Resin thermostat 5 is pre-processed, and the size of wherein cavity 6 is：
200mm × 150mm × 0.5mm (length × width × height), material is copper.
1) by pressure source 70, resin hold-up tank 30, valve 40, resin thermostat 5, valve 41, mould 4, valve 42, resin
Overflow tank 20 and vacuum source 60 to be sequentially connected using pipeline 10, valve 40, valve 41 and valve 42 are closed；
2) temperature of resin hold-up tank 30 is increased to 80 DEG C, the temperature of mould 4 is risen to 90 DEG C, by resin thermostat 5
Temperature rise to 95 DEG C；
3) QY8911-4 resins are poured into resin hold-up tank 30, maintains the temperature of resin hold-up tank 30 at 80 DEG C, it is right
QY8911-4 resins carry out vacuumizing and defoaming processing 30min；
4) vacuum source 60, valve 41 and valve 42 are opened, overflowing tank 20 to mould 4, resin thermostat 5 and resin takes out
Application of vacuum 15min；
5) pressure source 70 is opened, 0.6MPa pressure, QY8911-4 are applied to the QY8911-4 resins in resin hold-up tank 30
Resin begins flow through resin thermostat 5 and injected into mould 4, and the BA9914 of the outlet of resin thermostat 5 is obtained through monitoring
The temperature of resin is 91.6 DEG C；
6) about after 50min, resin overflows tank 20 and begins with QY8911-4 resins spilling, and valve 42, valve 41 are closed successively
With valve 40, mould 4 is heated up, 10h is incubated under the conditions of 210 DEG C, solidifies and obtains final part.
The presentation quality of part, internal soundness are satisfied by design requirement after testing.
Claims (4)
1. a kind of method for improving resin transfer molding (RTM) process forming composite yield rate, the system includes mould
[4], resin [11], resin hold-up tank [30], resin overflow tank [20], vacuum source [60] and pressure source [70], it is characterised in that：
Resin thermostat [5] is connected between resin hold-up tank [30] and mould [4], methods described comprises the following steps：
1) prepare and include closed cavity [6], the height of cavity [6] inside resin thermostat [5], the resin thermostat [5]
For 0.1~2mm, width is 10mm~500mm, and length is 20mm~500mm；The resin thermostat [5] is using oil heating, electricity
Heating or steam-heated form carry out thermostatic control to cavity [6], and the material of cavity [6] is metal material；The resin is permanent
Warm device [5] is resistant to the maximum injection pressure and highest injection temperature of technique initialization and air tight indeformable；
2) by pressure source [70], resin hold-up tank [30], valve [40], resin thermostat [5], valve [41], mould [4], valve
Door [42], resin are overflowed tank [20] and vacuum source [60] and are sequentially connected using pipeline [10], valve [40], valve [41] and valve
[42] it is closed；
3) the heating temperature-viscosity curve of reference resin [11], is increased to T1, in temperature T1 by the temperature of resin hold-up tank [30]
Under, the viscosity of resin [11] is in the range of 300cp~500cp；The temperature of mould [4] is increased to T2, under temperature T2, resin
[11] viscosity is in the range of 60cp~150cp；The temperature of resin thermostat [5] is increased to T3, under temperature T3, resin
[11] viscosity is in the range of 60cp~150cp；
4) resin prepared [11] is poured into resin hold-up tank [30], and deaeration processing is carried out to resin [11]；
5) vacuum source [60], valve [41] and valve [42] are opened, tank is overflowed to mould [4], resin thermostat [5] and resin
[20] vacuumize process is carried out；
6) after resin [11] deaeration is disposed, pressure source [70] is opened, according to technique adjustment pressure source set in advance
[70] output pressure value, opens valve [40], the resin [11] in resin hold-up tank [30] is flowed through resin thermostat [5] simultaneously
Injected in mould [4]；
7) after resin spilling tank [20] begins with resin [11] spilling, valve [42], valve [41] and valve are closed successively
[40], elevated cure is carried out to mould [4] according to the technological requirement of resin [11] and obtains final part.
2. a kind of raising composite resin transfer modling technological forming composite finished product rate according to claim 1
Method, it is characterised in that：Cavity [6] is using the good metal material manufacture of thermal conductivity, such as steel, copper, aluminium and its alloy.
3. a kind of raising composite resin transfer modling technological forming composite finished product rate according to claim 1
Method, it is characterised in that：The temperature T1 ＜ temperature T2.
4. a kind of raising composite resin transfer modling technological forming composite finished product rate according to claim 1
Method, it is characterised in that：Temperature T3 >=temperature the T2, viscosity≤gluing under temperature T2 of the resin [11] under temperature T3
Degree.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169044A (en) * | 2019-12-13 | 2020-05-19 | 中航复合材料有限责任公司 | RTM (resin transfer molding) forming die and method for composite material blade |
| CN113386373A (en) * | 2021-05-28 | 2021-09-14 | 上纬(天津)风电材料有限公司 | Integrated resin infusion method and system applied to wind power blade manufacturing |
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|---|---|---|---|---|
| CN1775514A (en) * | 2005-11-29 | 2006-05-24 | 天津工业大学 | Injection apparatus for resin transfer moulding technology |
| CN101439585A (en) * | 2007-11-23 | 2009-05-27 | 同济大学 | Unit equipment for molding autoclave/liquid mould of resin-based composite material |
| CN103561942A (en) * | 2011-05-27 | 2014-02-05 | 斯奈克玛 | Pressure-maintaining device for creating composite components by injecting resin and associated method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169044A (en) * | 2019-12-13 | 2020-05-19 | 中航复合材料有限责任公司 | RTM (resin transfer molding) forming die and method for composite material blade |
| CN113386373A (en) * | 2021-05-28 | 2021-09-14 | 上纬(天津)风电材料有限公司 | Integrated resin infusion method and system applied to wind power blade manufacturing |
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Effective date of registration: 20230913 Address after: 101300 Zhonghang Fucai No.1 scientific research building, aviation industrial park, Shunyi District, Beijing Patentee after: AVIC COMPOSITE Corp.,Ltd. Patentee after: AVIC BEIJING AERONAUTICAL MANUFACTURING TECHNOLOGY Research Institute Address before: 101300 507, AVIC industry and trade building, Shuanghe street, Shunyi District, Beijing Patentee before: AVIC COMPOSITE Corp.,Ltd. |