CN106608056B - A kind of phenolic aldehyde panel honeycomb sandwich construction part forming method - Google Patents
A kind of phenolic aldehyde panel honeycomb sandwich construction part forming method Download PDFInfo
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- CN106608056B CN106608056B CN201611039409.XA CN201611039409A CN106608056B CN 106608056 B CN106608056 B CN 106608056B CN 201611039409 A CN201611039409 A CN 201611039409A CN 106608056 B CN106608056 B CN 106608056B
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- precuring
- sandwich construction
- exterior skin
- honeycomb
- honeycomb sandwich
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02245—Abrading, e.g. grinding, sanding, sandblasting or scraping
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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
- B29C70/34—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
Abstract
The invention discloses a kind of phenolic aldehyde panel honeycomb sandwich construction part forming methods, belong to technical field of composite material molding.The honeycomb sandwich construction part includes inside panel, exterior skin, frame, honeycomb, reinforcing fiber prepreg tape enhancement layer, interior adhesive film and outer adhesive film；The forming method includes: to prepare phenolic resin preimpregnation cloth；Manufacture the mold of honeycomb sandwich construction shape；Inside panel and frame precuring；Reinforcing fiber prepreg tape is bonded in preforming inside panel surface and forms reinforcing fiber prepreg tape enhancement layer by reinforcing fiber prepreg tape laying；Honeycomb installation and precuring；Exterior skin precuring；Assembling product increases exterior skin laying；Assembled product is integrally subjected to curing process；Demoulding.Large-sized honeycomb sandwich construction can be formed using this method, and indeformable after molding, unsticking, not bulge, honeycomb sandwich construction size, weight, shape etc. do not meet design requirement, ablation resistance is good.
Description
Technical field
The present invention relates to technical field of composite material molding, in particular to a kind of phenolic aldehyde panel honeycomb sandwich construction part molding
Method.
Background technique
Honeycomb sandwich construction has specific strength height, the excellent properties such as heat-insulating sound-insulating, in field of aerospace and civilian industry
Field is widely used in needing light-weight load-carrying construction part.However common metal panel, plank, plastic plate, fiber glass epoxy
The ablation resistance of panel is poor, and ablative degradation easily occurs under certain strong ablation environment of space industry, influences product normal work.
The ablation resistance of phenol die face plate is good, but releasing small-molecule substance is more when ablation its solidification of phenolic resin, difficult forming, pole
It is used for the panel of honeycomb sandwich construction less；Honeycomb sandwich construction rigidity is preferable, but after the molding of Large-dimension honeycomb sandwich still easily
Deformation, unsticking, bulge etc., it is difficult to form not unsticking, indeformable product.
Summary of the invention
The present invention is solved and is existed in the prior art by providing a kind of phenolic aldehyde panel honeycomb sandwich construction part forming method
Phenolic resin be used for difficult forming when honeycomb sandwich construction panel, the technical issues of easily-deformable after molding, unsticking, bulge, energy
Enough form large-sized honeycomb sandwich construction, it is indeformable after molding, unsticking, not bulge, ablation resistance be not good.
In order to solve the above technical problems, the present invention provides a kind of phenolic aldehyde panel honeycomb sandwich construction part forming method, institute
Stating honeycomb sandwich construction part includes inside panel, exterior skin, frame, honeycomb, reinforcing fiber prepreg tape enhancement layer, interior adhesive film and outer
Adhesive film；The forming method includes:
Prepare phenolic resin preimpregnation cloth；The resin content of the phenolic resin preimpregnation cloth is 28%~36%, and fugitive constituent contains
Amount is 2%~6%；
Manufacture the mold of honeycomb sandwich construction shape；
The phenolic resin is presoaked cloth laying inside panel and frame on the mold by inside panel and frame precuring,
Then vacuum sealing heating pressurization precuring, obtains preforming inside panel and frame；
Reinforcing fiber prepreg tape is bonded in preforming inside panel surface and forms enhancing fibre by reinforcing fiber prepreg tape laying
Tie up prepreg tape enhancement layer；
Honeycomb installation and precuring, the honeycomb are bonded on the reinforcing fiber prepreg tape enhancement layer, vacuum sealing
Heating pressurization precuring；
The phenolic resin is presoaked cloth laying exterior skin and frame on outer covering forming mold by exterior skin precuring,
Then vacuum sealing heating pressurization precuring, obtains preforming exterior skin；
Assembling product increases exterior skin laying, and preforming good exterior skin is adhered on the honeycomb of precuring, and is increased
Exterior skin laying makes product weight, size meet design requirement；
Assembled product is integrally subjected to curing process；
Product after curing process is demoulded, phenolic aldehyde panel honeycomb sandwich construction part is obtained.
Further, described that the phenolic resin is presoaked into cloth laying inside panel and frame on the mold, then very
Empty heated sealed pressurization precuring, obtains preforming inside panel and frame, specifically: the mold is pre- at 40 DEG C~80 DEG C
Heat keeps the temperature 10~40min；The phenolic resin is presoaked into cloth laying inside panel and frame on the mold, laying to requirement
Thickness, weight；Gas permeable material, packet vacuum bag are spread on the surface for completing inside panel and frame, is then vacuumized, heating pressurization is pre-
Solidification；Vacuum bag, gas permeable material are finally removed, preforming good inside panel and frame are obtained.
Further, the temperature of the precuring is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
Further, the width of the reinforcing fiber prepreg tape is 10mm~40mm, the reinforcing fiber prepreg tape enhancing
Layer distributes as net shape.
Further, the resin matrix of the reinforcing fiber prepreg tape is thermosetting resin；Reinforcing fiber prepreg tape is single
To cloth prepreg tape or non-unidirectional cloth prepreg tape；The reinforcing fiber is carbon fiber, aramid fiber or high-strength glass fibre.
Further, described that the honeycomb is bonded on the reinforcing fiber prepreg tape enhancement layer, vacuum sealing heating
Pressurization precuring, specifically: one layer of glue film is pasted on the reinforcing fiber prepreg tape enhancement layer, and honeycomb is adhered to the glue film
On；Then gas permeable material, packet vacuum bag are spread on the honeycomb surface, then vacuumized, heating pressurization precuring；Finally remove vacuum
Bag, gas permeable material, cement the honeycomb precompressed.
Further, the temperature of the precuring is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
It is further, described that the phenolic resin is presoaked into cloth laying exterior skin and frame on outer covering forming mold,
Then vacuum sealing heating pressurization precuring, obtains preforming exterior skin, specifically: external covering forming mold preheating, it will
The phenolic resin presoaks cloth laying exterior skin and frame on the exterior skin molding die；Wherein, exterior skin overlay thickness
It is the 60%~80% of exterior skin overall thickness；Gas permeable material, packet vacuum bag are spread on the surface for completing exterior skin and frame；Then it takes out
Vacuum, heating pressurization precuring；Vacuum bag, gas permeable material are finally removed, preforming good exterior skin is obtained.
Further, the temperature of the precuring is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
Further, the curing process specifically: glue, gas permeable material are inhaled in increased exterior skin and jamb surface paving,
Heat-pressure curing after packet vacuum bag, the cured temperature be 150 DEG C~180 DEG C, 2~4h of time, pressure 0.2~
1.0MPa。
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages:
The phenolic aldehyde panel honeycomb sandwich construction part forming method provided in the embodiment of the present invention, since its panel uses phenolic aldehyde
The molding of resin prepreg cloth laying has preferable heat-insulated and ablation resistance；Due to carrying out laying using reinforcing fiber prepreg tape
Enhancing, improves the rigidity of structure, keeps honeycomb sandwich construction deformation after molding small；Due to using low resin to contain in forming process
The phenolic resin preimpregnation cloth of amount, low-volatile, preforming, precuring measure by several times, so that molding honeycomb sandwich construction is not
Deformation, not unsticking, not bulge；When to solve phenolic resin existing in the prior art for honeycomb sandwich construction panel at
The technical issues of type is difficult, easily-deformable after molding, unsticking, bulge, achieve can form panel size greater than 2000mm ×
The Large-dimension honeycomb sandwich of 500mm, product is indeformable after molding, unsticking, not bulge, the good technology of ablation resistance are not imitated
Fruit.
Detailed description of the invention
Fig. 1 is phenolic aldehyde panel honeycomb sandwich construction part forming method flow chart provided in an embodiment of the present invention；
Fig. 2 is phenolic aldehyde panel honeycomb sandwich construction part schematic diagram in the embodiment of the present invention；
Fig. 3 is phenolic aldehyde panel honeycomb sandwich construction part schematic cross-section in the embodiment of the present invention；
Fig. 4 is the distribution of reinforcing fiber prepreg tape in phenolic aldehyde panel honeycomb sandwich construction part provided in an embodiment of the present invention
Figure；
Fig. 5 is that product packet vacuum is illustrated in phenolic aldehyde panel honeycomb sandwich construction part forming method provided in an embodiment of the present invention
Figure.
Specific embodiment
The embodiment of the present invention solves the prior art by providing a kind of phenolic aldehyde panel honeycomb sandwich construction part forming method
Present in phenolic resin be used for honeycomb sandwich construction panel when difficult forming, easily-deformable after molding, unsticking, the technology of bulge are asked
Topic, can form large-sized honeycomb sandwich construction, and indeformable after molding, not unsticking, not bulge, ablation resistance is good, honeycomb folder
Layer structure size, weight, shape etc. meet design requirement.
In order to solve the above technical problems, the general thought that the embodiment of the present invention provides technical solution is as follows:
The present invention provides a kind of phenolic aldehyde panel honeycomb sandwich construction part forming method, the honeycomb sandwich construction part includes
Inside panel, exterior skin, frame, honeycomb, reinforcing fiber prepreg tape enhancement layer, interior adhesive film and outer adhesive film；The forming method
Include:
Prepare phenolic resin preimpregnation cloth；The resin content of the phenolic resin preimpregnation cloth is 28%~36%, and fugitive constituent contains
Amount is 2%~6%；
Manufacture the mold of honeycomb sandwich construction shape；
The phenolic resin is presoaked cloth laying inside panel and frame on the mold by inside panel and frame precuring,
Then vacuum sealing heating pressurization precuring, obtains preforming inside panel and frame；
Reinforcing fiber prepreg tape is bonded in preforming inside panel surface and forms enhancing fibre by reinforcing fiber prepreg tape laying
Tie up prepreg tape enhancement layer；
Honeycomb installation and precuring, the honeycomb are bonded on the reinforcing fiber prepreg tape enhancement layer, vacuum sealing
Heating pressurization precuring；
The phenolic resin is presoaked cloth laying exterior skin and frame on outer covering forming mold by exterior skin precuring,
Then vacuum sealing heating pressurization precuring, obtains preforming exterior skin；
Assembling product increases exterior skin laying, and preforming good exterior skin is adhered on the honeycomb of precuring, and is increased
Exterior skin laying makes product weight, size meet design requirement；
Assembled product is integrally subjected to curing process；
Product after curing process is demoulded, phenolic aldehyde panel honeycomb sandwich construction part is obtained.
It can be seen that by the above content and the molding of cloth laying presoaked using phenolic resin due to its panel, have preferable
Heat-insulated and ablation resistance；Due to carrying out laying enhancing using reinforcing fiber prepreg tape, the rigidity of structure is improved, is made after molding
Honeycomb sandwich construction deformation is small；Due to using the phenolic resin of low resin content, low-volatile to presoak cloth in forming process, point
Secondary preforming, precuring measure, so that molding honeycomb sandwich construction is indeformable, not unsticking, not bulge；It is existing to solve
Difficult forming when having phenolic resin present in technology for honeycomb sandwich construction panel, easily-deformable after molding, unsticking, bulge
Technical problem, the Large-dimension honeycomb sandwich that panel size is greater than 2000mm × 500mm can be formed by achieving, and be produced after molding
Product are indeformable, not unsticking, not bulge, the good technical effect of ablation resistance.
In order to better understand the above technical scheme, below in conjunction with Figure of description and specific embodiment to above-mentioned
Technical solution is described in detail.
Referring to Fig. 1, a kind of phenolic aldehyde panel honeycomb sandwich construction part forming method, can form panel size and be greater than
The Large-dimension honeycomb sandwich of 2000mm × 500mm, referring to figs. 2 and 3, the honeycomb sandwich construction part 1 include inside panel
2, exterior skin 3, frame 4, honeycomb 5, reinforcing fiber prepreg tape enhancement layer 6, interior adhesive film 7 and outer adhesive film 8；The forming method
Include:
Step S100: phenolic resin preimpregnation cloth is prepared；The resin content of the phenolic resin preimpregnation cloth is 28%~36%,
Volatile content is 2%~6%；
Wherein, the low resin content, low volatilization that resin content is 2%~6% for 28%~36%, volatile content are used
The phenolic resin of part presoaks cloth, and cooperation is using preforming, precuring measure by several times, so that molding honeycomb sandwich construction is constant
Shape, non-unsticking, not bulge.
Specifically, phenolic resin preimpregnation cloth can presoak cloth, resurrection glass fibre using quartz fiber cloth/phenolic resin
Cloth/phenolic resin preimpregnation cloth or alkali-free glass fiber cloth/phenolic resin preimpregnation cloth etc. are using phenolic resin as the prepreg cloth of matrix, tool
There is preferable heat-insulated and ablation resistance.
Step S110: the mold of manufacture honeycomb sandwich construction shape；
Specifically, the mold is single side mould, and guarantee that the airtight detection of 0.5MPa is air tight.Mold uses steel material mould
The metal materials such as tool, aluminium material mold.
Step S120: the phenolic resin is presoaked cloth laying Inner Mongol on the mold by inside panel and frame precuring
Skin and frame, then vacuum sealing heating pressurization precuring, obtains preforming inside panel and frame；
Specifically, the mold is preheated at 40 DEG C~80 DEG C, 10~40min is kept the temperature；The phenolic resin is presoaked into cloth
The size and shape for cutting into requirement, laying inside panel and frame on the mold, laying to require thickness, weight；?
Surface the paving gas permeable material, packet vacuum bag for completing inside panel and frame, then vacuumize, heating pressurization precuring；Finally remove
Vacuum bag, gas permeable material obtain preforming good inside panel and frame；By inside panel and jamb surface residue glue, bulge, protrusion etc.
It clears up, polish flat.
In the step s 120, the temperature of precuring is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
In this precuring temperature, time, pressure range inside panel and frame can be compacted, and resin can continue in subsequent forming
It keeps preferable chemical crosslink reaction ability, guarantees the final globality of product, each interface not unsticking.
Step S130: reinforcing fiber prepreg tape is bonded in preforming inside panel surface by reinforcing fiber prepreg tape laying
Form reinforcing fiber prepreg tape enhancement layer；
Referring to Fig. 4, specifically, the width of the reinforcing fiber prepreg tape is 10mm~40mm, the reinforcing fiber of formation
Prepreg tape enhancement layer distributes as net shape, and plays humidification, the rigidity of structure can be improved, and deforms honeycomb sandwich construction after molding
It is small.The too small then humidification of its width is small, and the excessive humidification of width is not significant and increases weight.
In the present embodiment, the resin matrix of the reinforcing fiber prepreg tape is thermosetting resin, specifically can be epoxy, phenol
The thermosetting resins such as aldehyde or bismaleimide resin；Reinforcing fiber prepreg tape is unidirectional cloth prepreg tape or non-unidirectional cloth prepreg tape, such as non-
Unidirectional fiber plain cloth etc.；The reinforcing fiber is that carbon fiber, aramid fiber or high-strength glass fibre etc. are high-strength, high-modulus
Fiber cloth, humidification are good.
Step S140: the honeycomb is bonded on the reinforcing fiber prepreg tape enhancement layer by honeycomb installation and precuring,
Vacuum sealing heating pressurization precuring；
Specifically, pasting one layer of glue film on the reinforcing fiber prepreg tape enhancement layer, honeycomb is adhered on the glue film；
Then gas permeable material, packet vacuum bag are spread on the honeycomb surface, then vacuumized, heating pressurization precuring；Finally remove vacuum bag,
Gas permeable material cements the honeycomb precompressed.
In the present embodiment, honeycomb uses aluminum honeycomb, is capable of providing preferable rigidity, while bringing into using reinforcing fiber preimpregnation
Row enhancing, can further improve the rigidity of structure, keep honeycomb sandwich construction deformation after molding small.
In step S140, the temperature of precuring is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
Honeycomb can be made to be compacted in this precuring temperature, time, pressure range, and resin can continue to keep preferable in subsequent forming
Chemical crosslink reaction ability, guarantee the final globality of product, each interface not unsticking.
Step S150: exterior skin precuring covers phenolic resin preimpregnation cloth on outer covering forming mold outside laying
Skin and frame, then vacuum sealing heating pressurization precuring, obtains preforming exterior skin；
Specifically, phenolic resin preimpregnation cloth, is cut into the size and shape of requirement by externally covering forming mold preheating
Shape, laying exterior skin and frame on the exterior skin molding die；Wherein, exterior skin overlay thickness is exterior skin overall thickness
60%~80%；Gas permeable material, packet vacuum bag are spread on the surface for completing exterior skin and frame；Then it vacuumizes, heating pressurization is pre-
Solidification；Vacuum bag, gas permeable material are finally removed, preforming good exterior skin is obtained；By exterior skin surface residue glue, bulge, protrusion
Deng cleaning, polish flat.
Exterior skin overlay thickness is determined as 60%~80% and is conducive to exterior skin one entirety of formation, and overlay thickness crosses conference
Keep subsequent adjustment space small, too small then exterior skin layering is more, more scrappy.
In step S150, the temperature of precuring is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
Exterior skin can be made to be compacted in this precuring temperature, time, pressure range, and in subsequent forming resin can continue keep compared with
Good chemical crosslink reaction ability, guarantees the final globality of product, each interface not unsticking.
Step S160: assembling product increases exterior skin laying, and preforming good exterior skin is adhered to the honeycomb of precuring
On, and increasing exterior skin laying makes product weight, size meet design requirement；
In step S160, the weight of cloth is presoaked according to laying phenolic resin and design value difference calculates increased outer illiteracy
Skin laying, final products weight, the size made meet design requirement.
Step S170: assembled product is integrally subjected to curing process；
Referring to Fig. 5, in step S170, curing process specifically: increased exterior skin and jamb surface paving inhale glue,
Gas permeable material, heat-pressure curing after packet vacuum bag, cured temperature is 150 DEG C~180 DEG C, 2~4h of time, pressure 0.2~
1.0MPa.It can make product compacting, completion of cure in this precuring temperature, time, pressure range, there is preferable intensity.Temperature
Spend low, time too short solidification not exclusively, intensity difference；Temperature is excessively high, overlong time can cross solidification, reduces intensity instead.Pressure
Determine compactness, the bigger pressure the more closely knit, and intensity is better, but being influenced pressure by honeycomb cannot be excessive, crosses conference and damages honeycomb, damage
Bad product overall structure.
Step S180: the product after curing process is demoulded, and removes vacuum bag, gas permeable material, obtains phenolic aldehyde panel
Honeycomb sandwich construction part.
It can be seen that its panel by the above content and the molding of cloth laying presoaked using phenolic resin, have preferable heat-insulated
And ablation resistance；Due to carrying out laying enhancing using reinforcing fiber prepreg tape, rigidity is further increased, makes after molding
Honeycomb sandwich construction deformation is small；By preforming, precuring by several times, gas releases less and easy row when phenolic resin panel solidifies
Out, it is not detained in honeycomb interior and generates internal stress, to make panel and honeycomb is indeformable, not unsticking；It is calculated and is spread by weight
Layer, makes product structure size, weight meet design requirement；Product ablation resistance is excellent, can be used in the environment of resistance to ablation, uses this
The method of embodiment has completed the preparation of more than 200 part phenolic aldehyde panel honeycomb sandwich construction parts, and product is qualified.
It is for a more detailed description to the present invention by the following examples.These embodiments are only to the best embodiment party of the present invention
The description of formula does not have any limitation to the scope of the present invention.
Embodiment 1
S1: phenolic resin preimpregnation cloth is prepared；The resin content of the phenolic resin preimpregnation cloth is 28%, and volatile content is
2%；Phenolic resin presoaks cloth and presoaks cloth using quartz fiber cloth/phenolic resin；
S2: the mold of manufacture honeycomb sandwich construction shape, mold are single side mould, using steel material, and guarantee 0.5MPa gas
Close detection is air tight；
S3: inside panel and frame precuring
The mold is preheated at 40 DEG C, keeps the temperature 40min by S3.1；
Phenolic resin preimpregnation cloth is cut into the size and shape of requirement, the laying Inner Mongol on the mold by S3.2
Skin and frame, laying to require thickness, weight；
S3.3 spreads gas permeable material, packet vacuum bag on the surface for completing inside panel and frame；
S3.4 vacuumizes mold and laying packet vacuum products in autoclave, precuring of pressurizeing；Wherein, precuring
Temperature is 120 DEG C, time 2h, pressure 0.2MPa；
S3.5 removes vacuum bag, gas permeable material, obtains preforming good inside panel and frame；
S3.6 by the cleaning such as inside panel and jamb surface residue glue, bulge, protrusion, polishes flat.
S4: reinforcing fiber prepreg tape laying
One layer of glue film is pasted on preforming good inside panel surface, glue film allows to splice；Then by the reinforcing fiber of 10mm wide
The grid-shaped paving of prepreg tape forms reinforcing fiber prepreg tape enhancement layer on glue film；Wherein, the resin of reinforcing fiber prepreg tape
Matrix is epoxy resin, and cloth of reinforcement fibers is non-unidirectional cloth prepreg tape, and reinforcing fiber is aramid fiber.
S5: honeycomb installation and precuring
S5.1 pastes one layer of glue film in reinforcing fiber prepreg tape enhancing layer surface, and glue film allows to splice；
Honeycomb is cut, is drawn into and requires shape, honeycomb is adhered on the glue film by S5.2；
S5.3 spreads gas permeable material, packet vacuum bag on honeycomb surface；
S5.4 vacuumizes mold and laying packet vacuum products in baking oven, heating pressurization precuring；Wherein, precuring
Temperature be 120 DEG C, time 2h, pressure 0.2MPa；
S5.5 removes vacuum bag, gas permeable material, cements honeycomb precompressed.
S6: exterior skin precuring
Phenolic resin preimpregnation cloth after mold preheating, is cut into the ruler of requirement using exterior skin molding die by S6.1
Very little and shape, laying exterior skin and frame on outer covering forming mold, the 60% of the exterior skin overall thickness of laying to requirement；
S6.2 spreads gas permeable material, packet vacuum bag on the surface for completing exterior skin and frame；
S6.3 vacuumizes mold and laying packet vacuum products in autoclave, heating pressurization precuring；Wherein, pre- solid
The temperature of change is 120 DEG C, time 2h, pressure 0.2MPa；
S6.4 removes vacuum bag, gas permeable material, obtains preforming good exterior skin；
S6.5 by the cleaning such as exterior skin surface residue glue, bulge, protrusion, polishes flat.
S7: assembling product increases exterior skin laying
Preforming good exterior skin is adhered on the honeycomb of precuring, and calculates laying phenolic resin preimpregnation cloth
Weight, according to product, laying weight and design value difference increase exterior skin laying, and final products weight, the size made is equal
Meet design requirement；
S8: assembled product is integrally subjected to curing process；
Glue, gas permeable material, packet vacuum bag are inhaled in increased exterior skin and jamb surface paving, mold and laying packet vacuum are produced
Product vacuumize in autoclave, heat-pressure curing, and cured temperature is 150 DEG C, time 4h, pressure 0.2MPa.
S9: demoulding removes vacuum bag, gas permeable material, obtains phenolic aldehyde panel honeycomb sandwich construction part.
Embodiment 2
S1: phenolic resin preimpregnation cloth is prepared；The resin content of the phenolic resin preimpregnation cloth is 32%, and volatile content is
4%；Phenolic resin presoaks cloth and presoaks cloth using alkali-free glass fiber cloth/phenolic resin；
S2: the mold of manufacture honeycomb sandwich construction shape, mold are single side mould, using steel material, and guarantee 0.5MPa gas
Close detection is air tight；
S3: inside panel and frame precuring
The mold is preheated at 60 DEG C, keeps the temperature 20min by S3.1；
Phenolic resin preimpregnation cloth is cut into the size and shape of requirement, the laying Inner Mongol on the mold by S3.2
Skin and frame, laying to require thickness, weight；
S3.3 spreads gas permeable material, packet vacuum bag on the surface for completing inside panel and frame；
S3.4 vacuumizes mold and laying packet vacuum products in autoclave, precuring of pressurizeing；Wherein, precuring
Temperature is 130 DEG C, time 1h, pressure 0.6MPa；
S3.5 removes vacuum bag, gas permeable material, obtains preforming good inside panel and frame；
S3.6 by the cleaning such as inside panel and jamb surface residue glue, bulge, protrusion, polishes flat.
S4: reinforcing fiber prepreg tape laying
One layer of glue film is pasted on preforming good inside panel surface, glue film allows to splice；Then by the reinforcing fiber of 20mm wide
The grid-shaped paving of prepreg tape forms reinforcing fiber prepreg tape enhancement layer on glue film；Wherein, the resin of reinforcing fiber prepreg tape
Matrix is epoxy resin, and cloth of reinforcement fibers is unidirectional cloth prepreg tape, and reinforcing fiber is carbon fiber.
S5: honeycomb installation and precuring
S5.1 pastes one layer of glue film in reinforcing fiber prepreg tape enhancing layer surface, and glue film allows to splice；
Honeycomb is cut, is drawn into and requires shape, honeycomb is adhered on the glue film by S5.2；
S5.3 spreads gas permeable material, packet vacuum bag on honeycomb surface；
S5.4 vacuumizes mold and laying packet vacuum products in baking oven, heating pressurization precuring；Wherein, precuring
Temperature be 130 DEG C, time 1h, pressure 0.6MPa；
S5.5 removes vacuum bag, gas permeable material, cements honeycomb precompressed.
S6: exterior skin precuring
Phenolic resin preimpregnation cloth after mold preheating, is cut into the ruler of requirement using exterior skin molding die by S6.1
Very little and shape, laying exterior skin and frame on outer covering forming mold, the 70% of the exterior skin overall thickness of laying to requirement；
S6.2 spreads gas permeable material, packet vacuum bag on the surface for completing exterior skin and frame；
S6.3 vacuumizes mold and laying packet vacuum products in autoclave, heating pressurization precuring；Wherein, pre- solid
The temperature of change is 130 DEG C, time 1h, pressure 0.6MPa；
S6.4 removes vacuum bag, gas permeable material, obtains preforming good exterior skin；
S6.5 by the cleaning such as exterior skin surface residue glue, bulge, protrusion, polishes flat.
S7: assembling product increases exterior skin laying
Preforming good exterior skin is adhered on the honeycomb of precuring, and calculates laying phenolic resin preimpregnation cloth
Weight, according to product, laying weight and design value difference increase exterior skin laying, and final products weight, the size made is equal
Meet design requirement；
S8: assembled product is integrally subjected to curing process；
Glue, gas permeable material, packet vacuum bag are inhaled in increased exterior skin and jamb surface paving, mold and laying packet vacuum are produced
Product vacuumize in autoclave, heat-pressure curing, and cured temperature is 170 DEG C, time 3h, pressure 0.7MPa.
S9: demoulding removes vacuum bag, gas permeable material, obtains phenolic aldehyde panel honeycomb sandwich construction part.
Embodiment 3
S1: phenolic resin preimpregnation cloth is prepared；The resin content of the phenolic resin preimpregnation cloth is 36%, and volatile content is
6%；Phenolic resin presoaks cloth and presoaks cloth using high silica glass cloth/phenolic resin；
S2: the mold of manufacture honeycomb sandwich construction shape, mold are single side mould, using aluminium material, and guarantee 0.5MPa gas
Close detection is air tight；
S3: inside panel and frame precuring
The mold is preheated at 80 DEG C, keeps the temperature 10min by S3.1；
Phenolic resin preimpregnation cloth is cut into the size and shape of requirement, the laying Inner Mongol on the mold by S3.2
Skin and frame, laying to require thickness, weight；
S3.3 spreads gas permeable material, packet vacuum bag on the surface for completing inside panel and frame；
S3.4 vacuumizes mold and laying packet vacuum products in autoclave, precuring of pressurizeing；Wherein, precuring
Temperature is 140 DEG C, time 0.5, pressure 1.0MPa；
S3.5 removes vacuum bag, gas permeable material, obtains preforming good inside panel and frame；
S3.6 by the cleaning such as inside panel and jamb surface residue glue, bulge, protrusion, polishes flat.
S4: reinforcing fiber prepreg tape laying
One layer of glue film is pasted on preforming good inside panel surface, glue film allows to splice；Then by the reinforcing fiber of 40mm wide
The grid-shaped paving of prepreg tape forms reinforcing fiber prepreg tape enhancement layer on glue film；Wherein, the resin of reinforcing fiber prepreg tape
Matrix is bismaleimide resin, and cloth of reinforcement fibers is unidirectional cloth prepreg tape, and reinforcing fiber is high-strength glass fibre.
S5: honeycomb installation and precuring
S5.1 pastes one layer of glue film in reinforcing fiber prepreg tape enhancing layer surface, and glue film allows to splice；
Honeycomb is cut, is drawn into and requires shape, honeycomb is adhered on the glue film by S5.2；
S5.3 spreads gas permeable material, packet vacuum bag on honeycomb surface；
S5.4 vacuumizes mold and laying packet vacuum products in baking oven, heating pressurization precuring；Wherein, precuring
Temperature be 140 DEG C, time 0.5h, pressure 1.0MPa；
S5.5 removes vacuum bag, gas permeable material, cements honeycomb precompressed.
S6: exterior skin precuring
Phenolic resin preimpregnation cloth after mold preheating, is cut into the ruler of requirement using exterior skin molding die by S6.1
Very little and shape, laying exterior skin and frame on outer covering forming mold, the 80% of the exterior skin overall thickness of laying to requirement；
S6.2 spreads gas permeable material, packet vacuum bag on the surface for completing exterior skin and frame；
S6.3 vacuumizes mold and laying packet vacuum products in autoclave, heating pressurization precuring；Wherein, pre- solid
The temperature of change is 140 DEG C, time 0.5h, pressure 1.0MPa；
S6.4 removes vacuum bag, gas permeable material, obtains preforming good exterior skin；
S6.5 by the cleaning such as exterior skin surface residue glue, bulge, protrusion, polishes flat.
S7: assembling product increases exterior skin laying
Preforming good exterior skin is adhered on the honeycomb of precuring, and calculates laying phenolic resin preimpregnation cloth
Weight, according to product, laying weight and design value difference increase exterior skin laying, and final products weight, the size made is equal
Meet design requirement；
S8: assembled product is integrally subjected to curing process；
Glue, gas permeable material, packet vacuum bag are inhaled in increased exterior skin and jamb surface paving, mold and laying packet vacuum are produced
Product vacuumize in autoclave, heat-pressure curing, and cured temperature is 180 DEG C, time 2h, pressure 1.0MPa.
S9: demoulding removes vacuum bag, gas permeable material, obtains phenolic aldehyde panel honeycomb sandwich construction part.
Existing phenolic aldehyde panel honeycomb sandwich construction part deformation rate 20%, unsticking rate 50%, bulge rate 10%, and it is of the invention
Phenolic aldehyde panel honeycomb sandwich construction part invariance, the non-unsticking, not bulge of embodiment preparation, product qualification rate is 95% or more.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages:
The phenolic aldehyde panel honeycomb sandwich construction part forming method provided in the embodiment of the present invention, since its panel uses phenolic aldehyde
The molding of resin prepreg cloth laying has preferable heat-insulated and ablation resistance；Due to carrying out laying using reinforcing fiber prepreg tape
Enhancing, improves the rigidity of structure, keeps honeycomb sandwich construction deformation after molding small；Due to using low resin to contain in forming process
The phenolic resin preimpregnation cloth of amount, low-volatile, preforming, precuring measure by several times, so that molding honeycomb sandwich construction is not
Deformation, not unsticking, not bulge；When to solve phenolic resin existing in the prior art for honeycomb sandwich construction panel at
The technical issues of type is difficult, easily-deformable after molding, unsticking, bulge, achieve can form panel size greater than 2000mm ×
The Large-dimension honeycomb sandwich of 500mm, product is indeformable after molding, unsticking, not bulge, the good technology of ablation resistance are not imitated
Fruit.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (10)
1. a kind of phenolic aldehyde panel honeycomb sandwich construction part forming method, the honeycomb sandwich construction part include inside panel, exterior skin,
Frame, honeycomb, reinforcing fiber prepreg tape enhancement layer, interior adhesive film and outer adhesive film；It is characterized in that, the forming method packet
It includes:
Prepare phenolic resin preimpregnation cloth；The resin content of the phenolic resin preimpregnation cloth is 28%~36%, and volatile content is
2%~6%；
Manufacture the mold of honeycomb sandwich construction shape；
The phenolic resin is presoaked cloth laying inside panel and frame on the mold, then by inside panel and frame precuring
Vacuum sealing heating pressurization precuring, obtains preforming inside panel and frame；
It is pre- to be bonded in preforming inside panel surface formation reinforcing fiber by reinforcing fiber prepreg tape laying for reinforcing fiber prepreg tape
Leaching band enhancement layer；
Honeycomb installation and precuring, the honeycomb is bonded on the reinforcing fiber prepreg tape enhancement layer, vacuum sealing heating
Pressurization precuring；
The phenolic resin is presoaked cloth laying exterior skin and frame on outer covering forming mold, then by exterior skin precuring
Vacuum sealing heating pressurization precuring, obtains preforming exterior skin；
Assembling product increases exterior skin laying, and preforming good exterior skin is adhered on the honeycomb of precuring, and increases outer cover
Skin laying makes product weight, size meet design requirement；
Assembled product is integrally subjected to curing process；
Product after curing process is demoulded, phenolic aldehyde panel honeycomb sandwich construction part is obtained.
2. phenolic aldehyde panel honeycomb sandwich construction part forming method as described in claim 1, which is characterized in that described by the phenol
Urea formaldehyde prepreg cloth laying inside panel and frame on the mold, then vacuum sealing heating pressurization precuring, obtain it is pre- at
The inside panel and frame of type, specifically:
The mold is preheated at 40 DEG C~80 DEG C, keeps the temperature 10~40min；By phenolic resin preimpregnation cloth on the mold
Laying inside panel and frame, laying to require thickness, weight；In surface paving gas permeable material, the packet for completing inside panel and frame
Then vacuum bag vacuumizes, heating pressurization precuring；Vacuum bag, gas permeable material are finally removed, preforming good inside panel is obtained
And frame.
3. phenolic aldehyde panel honeycomb sandwich construction part forming method as claimed in claim 2, which is characterized in that the precuring
Temperature is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
4. phenolic aldehyde panel honeycomb sandwich construction part forming method as described in claim 1, which is characterized in that the reinforcing fiber
The width of prepreg tape is 10mm~40mm, and the reinforcing fiber prepreg tape enhancement layer distributes as net shape.
5. phenolic aldehyde panel honeycomb sandwich construction part forming method as described in claim 1 or 4, which is characterized in that the enhancing
The resin matrix of fiber prepreg tape is thermosetting resin；Reinforcing fiber prepreg tape is that unidirectional cloth prepreg tape or non-unidirectional cloth presoak
Band；The reinforcing fiber is carbon fiber, aramid fiber or high-strength glass fibre.
6. phenolic aldehyde panel honeycomb sandwich construction part forming method as described in claim 1, which is characterized in that described by the bee
Nest is bonded on the reinforcing fiber prepreg tape enhancement layer, vacuum sealing heating pressurization precuring, specifically:
One layer of glue film is pasted on the reinforcing fiber prepreg tape enhancement layer, and honeycomb is adhered on the glue film；Then described
Honeycomb surface spreads gas permeable material, packet vacuum bag, then vacuumizes, heating pressurization precuring；Vacuum bag, gas permeable material are finally removed,
Cement the honeycomb precompressed.
7. phenolic aldehyde panel honeycomb sandwich construction part forming method as claimed in claim 6, which is characterized in that the precuring
Temperature is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
8. phenolic aldehyde panel honeycomb sandwich construction part forming method as described in claim 1, which is characterized in that described by the phenol
Urea formaldehyde prepreg cloth laying exterior skin and frame on outer covering forming mold, then vacuum sealing heating pressurization precuring, obtains
To preforming exterior skin, specifically:
External covering forming mold preheating, presoaks cloth laying exterior skin on the exterior skin molding die for the phenolic resin
And frame；Wherein, exterior skin overlay thickness is the 60%~80% of exterior skin overall thickness；On the surface for completing exterior skin and frame
Spread gas permeable material, packet vacuum bag；Then it vacuumizes, heating pressurization precuring；Vacuum bag, gas permeable material are finally removed, is obtained pre-
The exterior skin of forming.
9. phenolic aldehyde panel honeycomb sandwich construction part forming method as claimed in claim 8, which is characterized in that the precuring
Temperature is 120 DEG C~140 DEG C, 0.5~2h of time, 0.2~1.0MPa of pressure.
10. phenolic aldehyde panel honeycomb sandwich construction part forming method as described in claim 1, which is characterized in that at the solidification
Reason specifically: inhale glue, gas permeable material in increased exterior skin and jamb surface paving, heat-pressure curing after packet vacuum bag is described
Cured temperature is 150 DEG C~180 DEG C, 2~4h of time, 0.2~1.0MPa of pressure.
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