CN107116809B - A kind of carbon fibre composite racing body manufacturing method and its sealing cavity block system - Google Patents
A kind of carbon fibre composite racing body manufacturing method and its sealing cavity block system Download PDFInfo
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- CN107116809B CN107116809B CN201710287852.7A CN201710287852A CN107116809B CN 107116809 B CN107116809 B CN 107116809B CN 201710287852 A CN201710287852 A CN 201710287852A CN 107116809 B CN107116809 B CN 107116809B
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/20—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding dies
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
Abstract
A kind of carbon fibre composite racing body manufacturing method and its sealing cavity block system, the described method comprises the following steps: formpiston production is turned over former, the molding of carbon fibre composite vehicle body, outer surface processing and maintenance and is repaired, so that the vehicle body needed be made；The sealing cavity block system, including former, vacuum bag and injecting glue seat are turned over, the upper surface for turning over former is successively arranged releasing agent layer, first layer demoulding layer of cloth, carbon fibre cloth layer, second layer demoulding layer of cloth and water conservancy diversion stratum reticulare from inside to outside；The opposite both sides of the vacuum bag are respectively provided with an injecting glue seat, and the corresponding resin feeding helix tube of each injecting glue seat, injecting glue seat are fixed on the intermediate position of resin feeding helix tube；The former that will entirely turn over from front to back of entire vacuum bag corrugationless or folding line is coated on interior, formation sealed environment.The beneficial effects of the present invention are: the manufacturing method makes carbon fibre composite racing body surface smooth, light weight and there is preferable mechanical property.
Description
Technical field
The present invention relates to a kind of carbon fibre composite racing body manufacturing method and its sealing cavity block systems.
Background technique
Nowadays motor sport more and more becomes an important sports, and the weight of racing car becomes energy in motor sport
The no key factor to get good grades, wherein the loss of weight of racing body at numerous fleets target.The purpose of the present invention is
A kind of manufacturing method possessing preferable surface effect and light-weighted racing body is provided.The maximum of existing manufacturing method lacks
Point is exactly rough surface, curved surface irregularity.
Summary of the invention
The present invention provide in view of the drawbacks of the prior art it is a kind of using carbon fibre composite so that racing body surface
It is smooth, light weight and with preferable mechanical property and its sealing cavity block system.
A kind of carbon fibre composite racing body manufacturing method of the present invention, comprising the following steps:
(1) formpiston is manufactured
1) mapping software adds frame configuration, i.e., it is vertical disconnected that long axis is exported in the catia figure for having designed car body shape
Face；
2) skeleton drawing is printed upon on drawing simultaneously label by 1:1, PVC foam plate is then slightly fixed on double-sided adhesive
On；
3) PVC foam plate is cut out according to drawing, splices PVC skeleton, extruded sheet is filled into skeleton, wherein squeezing
Mould plate profile has to be larger than PVC board profile, preferably relatively, reduces the working hour of polishing extruded sheet, foam special glue fixing PVC
Then foaming framework and extruded sheet are polished after the dedicated adhesive curing of foam according to shape, between two blocks of PVC foam plates
Smooth transition, net effect are preferred with outer surface smoother, obtain mold A；
4) one layer of epoxy resin is smeared on the surface mold A, prevents poly-putty base from corroding extruded sheet, after epoxy resin cure,
One layer of poly-putty base sealing of hole is smeared, is smoothed out with scraper scraper plate, is polished after waiting poly-putty base to solidify 3-4 hours with water-proof abrasive paper,
Mesh number is polished from low to high, obtains mold B；
5) with brush in mold B surface brushing first layer mold priming paint；
6) after the first layer mold solidifying priming paint of mold B surface 3-4 hours, using P80~P240 dry sand paper by slightly to
It is thin to carry out second of polishing, obtain mold C；
7) expose material part to mold C with a small amount of poly-putty base to repair, obtain mold D；
8) after the solidification of the poly-putty base on the surface mold D, in mold D external coating second layer mold priming paint, mold E is obtained；
9) water-fast with P500~P800 after carrying out third time polishing to mold E from thick to thin with the sand paper of P80~P500
Sand paper carries out water mill to it；
10) after water is dry, brushing bloom gel coat obtains mold F；
11) the 4th polishing is carried out to mold F from thick to thin with P80~P500 dry sand paper, then resistance to P500~P1200
Waterproof abrasive paper carries out water mill, obtains bright formpiston；
(2) former is turned in manufacture:
1) male mold surfaces pre-process: it first has to be surface-treated formpiston obtained before making glass reinforced plastic former,
Alcohol wipe male mold surfaces are used, the spot of male mold surfaces is cleaned, clean formpiston is obtained, is defined as formpiston A；
2) it coats chemical release agent: occupying appropriate chemical release agent with lint-free paper handkerchief after cleaning, it is lint-free with a fritter
Cloth forms releasing agent layer in the surface coated with multiple layer chemistry release agent of formpiston A, and every stratification releasing agent layer volatilizees 5- after coating
After 30 seconds, extra part is wiped with a fritter lint-free cloth；Need to cover 6 layers of release agent, every stratification on a new formpiston
The curing time that at least 15 minutes are needed between releasing agent layer at least needs to solidify a hour after being painted with the last layer,
The mold with multilayer chemistry release agent is obtained, formpiston B is defined as；
3) flange made is fixed on the edge formpiston B with hot melt adhesive, between pressure sensitive adhesive tape sealing PP cored slab
Gap, obtain formpiston C；
4) with the gap of filling wax sealing flange and formpiston C, pay attention to drafting angle, obtain formpiston D；Wherein drafting angle control
System is at -30 °~+30 °；
5) in the external coating mould gel coat layer of formpiston D, wherein mould gel coat layer coats in two times, mould gel coat layer it is total
Thickness control is in 0.8mm, and wherein first layer brush 0.3-0.4mm uniform thickness, after solidification 2-3 hours of 20 DEG C of room temperature, then brushes
Two layers of 0.3-0.4mm thickness at least solidify 4 hours at room temperature, place a night, obtain the mold with coating die gel coat, definition
For formpiston E；
6) in formpiston E external coating glass fibre as coupling layer, ensure on the docile and obedient formpiston E of glass fibre in painting process
All turnings pay particular attention to the place of wedge angle, to obtain the mold with coupling layer, are defined as formpiston F；Coupling layer is made
With being to eliminate the mark as caused by mold reinforcer, gel coat is enhanced by one layer of resin and glass to reach and reduce under gel coating resin
The bladdery risk in face provides a preferable base for reinforcer；
7) in formpiston F external coating laminated resin: at least spreading 4 layers of glass fibre, brush one layer of resin then on formpiston F
Layer of glass is spread, one layer of resin corresponds to layer of glass, and the dosage of each layer of resin is to be coated with glass fibre on it
Glass fibre is all coated on formpiston E by 4 times of quality；When starting solidification, color will become dark brown from brown
Color guarantees resin curing time at 24 hours or more；Wherein the weight ratio of resin and glass fibre is 4:1, then solidifies 24
Hour, former is turned in acquisition；
(3) carbon fibre composite vehicle body is manufactured:
1) multilayer chemistry release agent is coated turning over female mold surfaces with lint-free cloth, be at least spaced 15 minutes between every layer, finally
One layer be painted with after at least want 1 hour after, acquisition turn over former A；Chemical release agent is a kind of between mold and finished product
Functional materials have chemical resistance, are not dissolved when the chemical component with different resins contacts, can make glass fiber product
It is easy to be detached from and smooth pieces, used release agent is a kind of semipermanent release agent in this example, is had preferable close
Envelope property and release property are suitable for most resins and mold materials；
2) surface former A addition first layer demoulding layer of cloth is being turned over, it is one that this layer of release cloth, which is the first layer sealed in former,
The tearable cloth of layer, is torn after completing component, guarantees that release cloth can cover carbon cloth, obtains turning over demoulding layer of cloth
Former is defined as turning over former B；
3) it places carbon cloth on demand on the release layer for turning over former B, and is gently fixed with adhesive tape, obtain carbon-bearing
Scrim cloth turns over former, is defined as turning over former C；
4) in the surface addition second layer demoulding layer of cloth for turning over former C, this layer of demoulding layer of cloth, which is equally one layer, to be torn
Cloth will be torn after completing component, guarantee that release cloth can cover carbon cloth, former D is turned in acquisition；
5) it adds water conservancy diversion stratum reticulare: flow-guiding screen being cut into as demoulding layer of cloth size or overlayed on after bigger shape and turns over yin
Mould D is located at the release cloth layer surface on upper layer, and flow-guiding screen can guarantee under full vacuum, still have gap that resin stream can be made dynamic；It leads
Drift net extends sufficiently into injecting glue seat, it is ensured that once vacuumizing, resin is freely extended through from vacuum tube and resin feeding helix tube
In the carbon fibre cloth layer for turning over former D, obtain covering water conservancy diversion stratum reticulare turns over former, is defined as turning over former E；
6) fixed helix tube: resin feeding helix tube is a kind of plastic tube of spiral winding, be used to improve resin from true
Blank pipe (resin guide pipe) arrives the flowing of carbon cloth.Resin will be distributed along helix tube overall length, by two resin feeding spirals
Pipe is separately fixed on the flow-guiding screen turned on respect to two sides former E, so that resin is fast to the other side along the side for turning over former E
Speed is evenly distributed, it is ensured that resin from helix tube influent stream to flow-guiding screen in；In more large area or more complicated female die system,
Consider that multiple injecting glue seats and helix tube import resin and are also very important；
7) position silica gel connector (also known as injecting glue seat): the lower wing passage of silica gel connector is connected to resin feeding helix tube；
Resin enters helix tube and passes through from the channel, it is ensured that resin flows to resin by injecting glue seat from vacuum tube (also known as resin guide pipe)
In feed auger pipe；Injecting glue seat is fixed on the intermediate position of resin feeding helix tube, presses injecting glue seat, makes resin feeding spiral
Pipe is mounted in injecting glue seat, turns over one side of former E so that resin is evenly distributed to by helix tube in the bottom of injecting glue seat；
8) adhesive seal adhesive tape: sealant tape is pasted onto the flange for turning over former E, and one piece of ratio is turned over former E area greatly extremely
Few 50% vacuum bag film, since in corner, the paper at peel seal adhesive tape back presses vacuum bag film, adheres to exposure
Sealant tape on, so that vacuum bag film and sealant tape is sticked together, establish a sealed environment, whole process guarantees vacuum
Entirely the turning over former E from front to back and cover of bag corrugationless or folding line, form sealing cavity block system；In this step,
Ensure the shape of former and profile there are enough vacuum bag film packages to be vital in this process.Vacuum bag is thin
Film laying is incorrect to cause final component resin excessive so that having any " bridge joint " all in former corner, reduce intensity and matter
Amount；If you complete vacuum bag sealing, but there is leakage, it would be possible that being because caused by vacuum bag fold or folding；
9) connection and sealing resin feeding tank: all vacuum bag films are after all heap is folded, i.e., carbon cloth is sealed to very
In empty bag, directly with one scissors or the breach of pocket knife lane one on the vacuum bag film of resin feeding connector, resin is connected
Diversion pipe, resin are swimmingly flowed in sealing cavity block system from head tank by injecting glue seat；
10) connection and sealing resin trap: cutting one section of sufficiently long vacuum tube, for connect resin trap and
That the injecting glue seat for connecting the injecting glue seat opposite of resin head tank uses sealant tape close after vacuum tube one end is promoted vacuum bag
Envelope, the vacuum tube other end is connected to the import accessory (a black accessory) of resin trap, and vacuum tube is protruded into resin and is received
Storage liner (disposable paper cup replacement) prevents resin from dripping on the outside of liner, then by import accessory is tightened clockwise, is formed close
Seal ring border；
11) vacuum pump and resin trap are connected: preparing two vacuum tubes, and is connected two vacuum tubes with check-valves,
One end of the vacuum tube after connection is connected to the import accessory of resin trap, pushes vacuum tube to pass through import accessory and enters tree
Then a small distance in rouge collector tightens accessory by clockwise；The other end of vacuum tube is connected on vacuum pump；At this
In the process, the direction of check-valves is that air flows to vacuum pump, on the contrary then cannot circulate；This vacuum tube will not during water conservancy diversion
It is damaged and (means that it can infinitely be reused)；
12) resin feeding line is clamped, that is, connects the vacuum tube of resin head tank and injecting glue seat: at the beginning of resin feeding tank
Pipe clamp is placed, rotation wing nut closes pipe clamp, it is ensured that has created a sealed environment；
13) air is evacuated, vacuum bag is adjusted, it is ensured that vacuum pump connects correct voltage (240V alternating current), suitably pours into
Pumping fluid connects main power source, after surrounding as needed moves and fixes vacuum bag film to suitable position, opens vacuum
Pump, when air is taken away out of vacuum bag, vacuum bag film, which is tightly attached to, turns over the surface former E；
14) it tests vacuum: opening vacuum pump and evacuate vacuum bag, by having detected whether that pumping fluid is evaporated from pump
Come judge in vacuum bag whether perfect vacuum, and examined by corresponding vacuum " fall-down test " and determine whether vacuum bag film has
Leakage, it is necessary to vacuum bag is adjusted, (close to very vacuum, vacuum pump is not discharged appoints vacuum meter until being fully sealed
What pumping fluid steam) water conservancy diversion work can be taken up；The reading of vacuum meter is close to 100%.Due to the atmospheric pressure of variation
With the gauge table of calibration, pointer may not accurately point to 100% vacuum, even if having reached vacuum.It is to be understood that when
Reach perfect vacuum, most realistic method is to see vacuum pump, if has pumping fluid to be evaporated from pump；
15) the correct dosage of resin and curing agent is calculated, and as needed by the resin of needs and curing agent by just
After true ratio stirs evenly, it is added in resin feeding tank；The dosage of resin depends on the size and amount of reinforcement of product, and carbon cloth is got over
More, the resin used is more；Curing agent is chemically reacted with resin, forms netted space polymers, composite material aggregate
Envelope is a kind of additive for making liquid resin become tough and tensile figure solid among reticulate body, different types of resin and
The ratio of curing agent is different, and the mass ratio of resin and curing agent is 4:1 under normal circumstances
16) resin feeding pipe is opened, when vacuum pump operation, the pipe clamp of resin feeding pipe is gently unscrewed, when unscrewing nut
It can immediately see that resin is sucked into vacuum tube and starts water conservancy diversion, to ensure the importing of resin not by any limit when unclamping nut
System；Epoxy water conservancy diversion resin needs to be mixed evenly in certain proportion.As all resins, it is important that correctly ratio
Example, accurately measures and is sufficiently mixed.The resin and curing agent for going to stir evenly correct proportions using a set of electronic scale are needed at this time.
Resin (being different from resin feeding tank) is stirred evenly in a reservoir, and then resin is poured into resin feeding tank.This will greatly reduce not
Agitating resin is inhaled into the risk of water conservancy diversion, and non-agitating resin is commonly attached to the edge of stirring container；
17) it monitors water conservancy diversion: when resin guide infiltration 60%~80%, closing the pipe clamp of resin feeding pipe；Resin feeding tank
It is under atmospheric pressure effect, the only viscosity of resin itself prevents the resin upstream end of vacuum tube from becoming standard atmospheric pressure.This
Mean that the vacuum bag of resin upstream end will not be tightened, extra resin will accumulate；, when resin reaches resin trap,
Resin fibre ratio reaches a reasonable ratio；Clamped will lead to slowly a large amount of resin be inhaled into resin trap (here it is
The purposes of resin trap).Resin feeding pipe is clamped too early or too late, is not big problem.If clamping resin feeding too early
Pipe, pipe clamp can be unclamped with the short time allows more resins to flow into make up.Clamp it is too late in the case where, can only just be received by resin
Storage.Note: if a large amount of Excess resin is inhaled into resin trap, resin may start significant heat release, and
Start to smolder.In case of such case, these resin heat releases can only be waited to calm down gradually.Here it is try not to clamp tree too late
The main reason for rouge feed pipe；
18) continue to supervise resin guide:, part complete water conservancy diversion tight along with resin feeding pipe clamp, wait resin solid at this time
Change；Vacuum pump should keep working condition during cure cycle, until product is fully cured, obtain the vehicle of carbon fibre composite
Body A；Due to excessive hybrid resin build up together can sharply heat release, the resin in the head tank of part need to be disposed；If needed
Accelerate resin solidification, former will be turned over and be put into the solidification of baking oven high temperature, or product is made to carry out solidification at room temperature as high temperature
Cured alternative, both methods have not significant impact quality of item；
19) demould: vacuum pump should continue working, and until component is fully cured, vacuum bag film is torn i.e. from former
It can get the automobile body B of carbon fibre composite；It is just thrown away although sealant tape and flow-guiding screen are always finished, in certain situations
Under, vacuum bag film and sealant tape can retain and recycle.For example sealant tape can be used when next former seals
In the repairing of minute leaks；
(4) vehicle body outside surface is handled:
1) recess poly-putty base filling-in existing for the covering demoulding rear surface by automobile body B；
2) it is polished from thick to thin with silicon carbide paper P80-P500；
3) with fill out eye ash mend dit；
4) with the entire product surface of silicon carbide paper polishing of P240-P1200；
5) spray painting coating can be obtained final products after the completion of polishing.
19 in step (3)) demoulding step it is as follows:
1. cutting the surrounding edge of the vacuum bag film of the vehicle body A of carbon fibre composite and removal；
2. removing the sealant tape at former edge, it is most effective for quickly wrenching；
3. removing injecting glue seat, the solidified resin being sticked on injecting glue seat is removed completely, these injecting glue seats are can to repeat to make
?；
4. removing and throwing away flow-guiding screen；
5. release cloth and product are taken off from former together；
6. carefully tearing release cloth, product is not damaged.
1 in step (4)) by recess existing for the covering of automobile body B demoulding rear surface in poly-putty base filling-in:
1) it when the appearance of automobile body B covering is cracked, should carry out minute observation first, judge the depth of crackle
Whether carbon fibre composite is reached；
If 2) crackle only occurs from poly-putty base filling-in, painted again with filling out after eye ash filling-in to polish；
If 3) carbon fibre composite is cracked, inside body outer skin with after carbon fiber cloth reinforcement with fill out eye ash mend
It polishes after flat reparation of painting again.
One end of the vacuum tube has the inclination angle of 45° angle, then passes through one end with inclination angle of vacuum tube true
Aperture on empty bag film pushes in vacuum tube, promotes in the aperture at the top of injecting glue seat, by surrounding one around vacuum tube
Circle sealant tape is sealed to hose on vacuum bag, by secured, it is ensured that no change has taken place for sealant tape sealed environment.
The 13 of step (3)) in: the vacuum bag position for moving sealing former E if necessary is improper when needing to move, due to
The film of vacuum bag starts gradually to become tight, vacuum bag not vacuumized completely, temporarily turn off vacuum pump, at this moment moved and need weight
A little folds are done in the vacuum bag of new definition, the place needed, it is ensured that the gap for not having vacuum bag to bridge on former；If vacuum bag is thin
Membrane area is not big enough, it will be bridged in the certain point of former, and the vacuum bag film that just can not retighten is repaired and adjusted
It is whole；In case of this situation, it should stop, removing sack and sealant tape tries again again.
The 14 of step (3)) it tests in vacuum, when hermetically sealed, the sound of pump can be slightly changed, and the steam of pumping fluid can stop
It is only evaporated from vacuum pump, on this node, carries out vacuum " fall-down test ", turn off vacuum pump, continue at least 20 minutes,
Then meticulous inspection vacuum meter；If index decreased, that is, determine that vacuum bag film has leakage, it is necessary to be adjusted；If no
It is fully sealed, vacuum bag film and sealant tape is firmly pressed, then carry out vacuum test, until being fully sealed.
A kind of sealing cavity block system of carbon fibre composite racing body manufacturing method building according to the present invention,
It is characterized by comprising former, vacuum bag and injecting glue seat is turned over, the upper surface for turning over former is successively arranged demoulding from inside to outside
Oxidant layer, first layer demoulding layer of cloth, carbon fibre cloth layer, second layer demoulding layer of cloth and water conservancy diversion stratum reticulare；The vacuum bag it is opposite two
While being respectively provided with an injecting glue seat, and the corresponding resin feeding helix tube of each injecting glue seat, injecting glue seat are fixed on resin feeding
The intermediate position of helix tube；Resin feeding helix tube one end extends to the water conservancy diversion stratum reticulare for turning over former, and the other end passes through injecting glue
The lower wing passage of seat；One of injecting glue seat is connected to as resin inlet with resin feeding tank；Another injecting glue seat is true as taking out
It eats dishes without rice or wine, is connected to by vacuum tube with resin trap sealing；Entire vacuum bag corrugationless or folding line from front to back will be entire
It turns over former and is coated on interior, formation sealed environment.
The beneficial effects of the present invention are: the manufacturing method makes carbon fibre composite racing body surface smooth, quality
Gently and there is preferable mechanical property.
Detailed description of the invention
Fig. 1 is carbon fibre composite vehicle body moulding process schematic diagram of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawing
Referring to attached drawing:
A kind of carbon fibre composite racing body manufacturing method of the present invention of embodiment 1, comprising the following steps:
(1) formpiston is manufactured
1) mapping software adds frame configuration, i.e., it is vertical disconnected that long axis is exported in the catia figure for having designed car body shape
Face；
2) skeleton drawing is printed upon on drawing simultaneously label by 1:1, PVC foam plate is then slightly fixed on double-sided adhesive
On；
3) PVC foam plate is cut out according to drawing, splices PVC skeleton, extruded sheet is filled into skeleton, wherein squeezing
Mould plate profile has to be larger than PVC board profile, preferably relatively, reduces the working hour of polishing extruded sheet, foam special glue fixing PVC
Then foaming framework and extruded sheet are polished after the dedicated adhesive curing of foam according to shape, between two blocks of PVC foam plates
Smooth transition, net effect are preferred with outer surface smoother, obtain mold A；
4) one layer of epoxy resin is smeared on the surface mold A, prevents poly-putty base from corroding extruded sheet, after epoxy resin cure,
One layer of poly-putty base sealing of hole is smeared, is smoothed out with scraper scraper plate, is polished after waiting poly-putty base to solidify 3-4 hours with water-proof abrasive paper,
Mesh number is polished from low to high, obtains mold B；
5) with brush in mold B surface brushing first layer mold priming paint；
6) after the first layer mold solidifying priming paint of mold B surface 3-4 hours, using P80~P240 dry sand paper by slightly to
It is thin to carry out second of polishing, obtain mold C；
7) expose material part to mold C with a small amount of poly-putty base to repair, obtain mold D；
8) after the solidification of the poly-putty base on the surface mold D, in mold D external coating second layer mold priming paint, mold E is obtained；
9) water-fast with P500~P800 after carrying out third time polishing to mold E from thick to thin with the sand paper of P80~P500
Sand paper carries out water mill to it；
10) after water is dry, brushing bloom gel coat obtains mold F；
11) the 4th polishing is carried out to mold F from thick to thin with P80~P500 dry sand paper, then resistance to P500~P1200
Waterproof abrasive paper carries out water mill, obtains bright formpiston；
(2) former is turned in manufacture:
1) male mold surfaces pre-process: it first has to be surface-treated formpiston obtained before making glass reinforced plastic former,
Alcohol wipe male mold surfaces are used, the spot of male mold surfaces is cleaned, clean formpiston is obtained, is defined as formpiston A；
2) it coats chemical release agent: occupying appropriate chemical release agent with lint-free paper handkerchief after cleaning, it is lint-free with a fritter
Cloth forms releasing agent layer in the surface coated with multiple layer chemistry release agent of formpiston A, and every stratification releasing agent layer volatilizees 5- after coating
After 30 seconds, extra part is wiped with a fritter lint-free cloth；Need to cover 6 layers of release agent, every stratification on a new formpiston
The curing time that at least 15 minutes are needed between releasing agent layer at least needs to solidify a hour after being painted with the last layer,
The mold with multilayer chemistry release agent is obtained, formpiston B is defined as；
3) flange made is fixed on the edge formpiston B with hot melt adhesive, between pressure sensitive adhesive tape sealing PP cored slab
Gap, obtain formpiston C；
4) with the gap of filling wax sealing flange and formpiston C, pay attention to drafting angle, obtain formpiston D；Wherein drafting angle control
System is at -30 °~+30 °；
5) in the external coating mould gel coat layer of formpiston D, wherein mould gel coat layer coats in two times, mould gel coat layer it is total
Thickness control is in 0.8mm, and wherein first layer brush 0.3-0.4mm uniform thickness, after solidification 2-3 hours of 20 DEG C of room temperature, then brushes
Two layers of 0.3-0.4mm thickness at least solidify 4 hours at room temperature, place a night, obtain the mold with coating die gel coat, definition
For formpiston E；
6) in formpiston E external coating glass fibre as coupling layer, ensure on the docile and obedient formpiston E of glass fibre in painting process
All turnings pay particular attention to the place of wedge angle, to obtain the mold with coupling layer, are defined as formpiston F；Coupling layer is made
With being to eliminate the mark as caused by mold reinforcer, gel coat is enhanced by one layer of resin and glass to reach and reduce under gel coating resin
The bladdery risk in face provides a preferable base for reinforcer；
7) in formpiston F external coating laminated resin: at least spreading 4 layers of glass fibre, brush one layer of resin then on formpiston F
Layer of glass is spread, one layer of resin corresponds to layer of glass, and the dosage of each layer of resin is to be coated with glass fibre on it
Glass fibre is all coated on formpiston E by 4 times of quality；；When starting solidification, color will become dark brown from brown
Color guarantees resin curing time at 24 hours or more；Wherein the weight ratio of resin and glass fibre is 4:1, then solidifies 24
Hour, former is turned in acquisition；
(3) carbon fibre composite vehicle body is manufactured:
1) multilayer chemistry release agent is coated turning over female mold surfaces with lint-free cloth, be at least spaced 15 minutes between every layer, finally
One layer be painted with after at least want 1 hour after, acquisition turn over former A；Chemical release agent is a kind of between mold and finished product
Functional materials have chemical resistance, are not dissolved when the chemical component with different resins contacts, can make glass fiber product
It is easy to be detached from and smooth pieces, used release agent is a kind of semipermanent release agent in this example, is had preferable close
Envelope property and release property are suitable for most resins and mold materials；
2) surface former A addition first layer demoulding layer of cloth is being turned over, it is one that this layer of release cloth, which is the first layer sealed in former,
The tearable cloth of layer, is torn after completing component, guarantees that release cloth can cover carbon cloth, obtains turning over demoulding layer of cloth
Former is defined as turning over former B；
3) it places carbon cloth on demand on the release layer for turning over former B, and is gently fixed with adhesive tape, obtain carbon-bearing
Scrim cloth turns over former, is defined as turning over former C；
4) in the surface addition second layer demoulding layer of cloth for turning over former C, this layer of demoulding layer of cloth, which is equally one layer, to be torn
Cloth will be torn after completing component, guarantee that release cloth can cover carbon cloth, former D is turned in acquisition；
5) it adds water conservancy diversion stratum reticulare: flow-guiding screen being cut into as demoulding layer of cloth size or overlayed on after bigger shape and turns over yin
Mould D is located at the release cloth layer surface on upper layer, and flow-guiding screen can guarantee under full vacuum, still have gap that resin stream can be made dynamic；It leads
Drift net extends sufficiently into injecting glue seat, it is ensured that once vacuumizing, resin is freely extended through from vacuum tube and resin feeding helix tube
In the carbon fibre cloth layer for turning over former D, obtain covering water conservancy diversion stratum reticulare turns over former, is defined as turning over former E；
6) fixed helix tube: resin feeding helix tube is a kind of plastic tube of spiral winding, be used to improve resin from true
Blank pipe (resin guide pipe) arrives the flowing of carbon cloth.Resin will be distributed along helix tube overall length, by two resin feeding spirals
Pipe is separately fixed on the flow-guiding screen turned on respect to two sides former E, so that resin is fast to the other side along the side for turning over former E
Speed is evenly distributed, it is ensured that resin from helix tube influent stream to flow-guiding screen in；In more large area or more complicated female die system,
Consider that multiple injecting glue seats and helix tube import resin and are also very important；
7) position silica gel connector (also known as injecting glue seat): the lower wing passage of silica gel connector is connected to resin feeding helix tube；
Resin enters helix tube and passes through from the channel, it is ensured that resin flows to resin by injecting glue seat from vacuum tube (also known as resin guide pipe)
In feed auger pipe；Injecting glue seat is fixed on the intermediate position of resin feeding helix tube, presses injecting glue seat, makes resin feeding spiral
Pipe is mounted in injecting glue seat, turns over one side of former E so that resin is evenly distributed to by helix tube in the bottom of injecting glue seat；
8) adhesive seal adhesive tape: sealant tape is pasted onto the flange for turning over former E, and one piece of ratio is turned over former E area greatly extremely
Few 50% vacuum bag film, since in corner, the paper at peel seal adhesive tape back presses vacuum bag film, adheres to exposure
Sealant tape on, so that vacuum bag film and sealant tape is sticked together, establish a sealed environment, whole process guarantees vacuum
Entirely the turning over former E from front to back and cover of bag corrugationless or folding line, form sealing cavity block system；In this step,
Ensure the shape of former and profile there are enough vacuum bag film packages to be vital in this process.Vacuum bag is thin
Film laying is incorrect to cause final component resin excessive so that having any " bridge joint " all in former corner, reduce intensity and matter
Amount；If you complete vacuum bag sealing, but there is leakage, it would be possible that being because caused by vacuum bag fold or folding；
9) connection and sealing resin feeding tank: all vacuum bag films are after all heap is folded, i.e., carbon cloth is sealed to very
In empty bag, directly with one scissors or the breach of pocket knife lane one on the vacuum bag film of resin feeding connector, resin is connected
Diversion pipe, resin are swimmingly flowed in sealing cavity block system from head tank by injecting glue seat；
10) connection and sealing resin trap: cutting one section of sufficiently long vacuum tube, for connect resin trap and
That the injecting glue seat for connecting the injecting glue seat opposite of resin head tank uses sealant tape close after vacuum tube one end is promoted vacuum bag
Envelope, the vacuum tube other end is connected to the import accessory (a black accessory) of resin trap, and vacuum tube is protruded into resin and is received
Storage liner (disposable paper cup replacement) prevents resin from dripping on the outside of liner, then by import accessory is tightened clockwise, is formed close
Seal ring border；
11) vacuum pump and resin trap are connected: preparing two vacuum tubes, and is connected two vacuum tubes with check-valves,
One end of the vacuum tube after connection is connected to the import accessory of resin trap, pushes vacuum tube to pass through import accessory and enters tree
Then a small distance in rouge collector tightens accessory by clockwise；The other end of vacuum tube is connected on vacuum pump；At this
In the process, the direction of check-valves is that air flows to vacuum pump, on the contrary then cannot circulate；This vacuum tube will not during water conservancy diversion
It is damaged and (means that it can infinitely be reused)；
12) resin feeding line is clamped, that is, connects the vacuum tube of resin head tank and injecting glue seat: at the beginning of resin feeding tank
Pipe clamp is placed, rotation wing nut closes pipe clamp, it is ensured that has created a sealed environment；
13) air is evacuated, vacuum bag is adjusted, it is ensured that vacuum pump connects correct voltage (240V alternating current), suitably pours into
Pumping fluid connects main power source, after surrounding as needed moves and fixes vacuum bag film to suitable position, opens vacuum
Pump, when air is taken away out of vacuum bag, vacuum bag film, which is tightly attached to, turns over the surface former E；
14) it tests vacuum: opening vacuum pump and evacuate vacuum bag, by having detected whether that pumping fluid is evaporated from pump
Come judge in vacuum bag whether perfect vacuum, and examined by corresponding vacuum " fall-down test " and determine whether vacuum bag film has
Leakage, it is necessary to vacuum bag is adjusted, (close to very vacuum, vacuum pump is not discharged appoints vacuum meter until being fully sealed
What pumping fluid steam) water conservancy diversion work can be taken up；The reading of vacuum meter is close to 100%.Due to the atmospheric pressure of variation
With the gauge table of calibration, pointer may not accurately point to 100% vacuum, even if having reached vacuum.It is to be understood that when
Reach perfect vacuum, most realistic method is to see vacuum pump, if has pumping fluid to be evaporated from pump；
15) the correct dosage of resin and curing agent is calculated, and as needed by the resin of needs and curing agent by just
After true ratio stirs evenly, it is added in resin feeding tank；The dosage of resin depends on the size and amount of reinforcement of product, and carbon cloth is got over
More, the resin used is more；Curing agent is chemically reacted with resin, forms netted space polymers, composite material aggregate
Envelope is a kind of additive for making liquid resin become tough and tensile figure solid among reticulate body, different types of resin and
The ratio of curing agent is different, and the mass ratio of resin and curing agent is 4:1 under normal circumstances；
16) resin feeding pipe is opened, when vacuum pump operation, the pipe clamp of resin feeding pipe is gently unscrewed, when unscrewing nut
It can immediately see that resin is sucked into vacuum tube and starts water conservancy diversion, to ensure the importing of resin not by any limit when unclamping nut
System；Epoxy water conservancy diversion resin needs to be mixed evenly in certain proportion.As all resins, it is important that correctly ratio
Example, accurately measures and is sufficiently mixed.The resin and curing agent for going to stir evenly correct proportions using a set of electronic scale are needed at this time.
Resin (being different from resin feeding tank) is stirred evenly in a reservoir, and then resin is poured into resin feeding tank.This will greatly reduce not
Agitating resin is inhaled into the risk of water conservancy diversion, and non-agitating resin is commonly attached to the edge of stirring container；
17) it monitors water conservancy diversion: when resin guide infiltration 60%~80%, closing the pipe clamp of resin feeding pipe；Resin feeding tank
It is under atmospheric pressure effect, the only viscosity of resin itself prevents the resin upstream end of vacuum tube from becoming standard atmospheric pressure.This
Mean that the vacuum bag of resin upstream end will not be tightened, extra resin will accumulate；, when resin reaches resin trap,
Resin fibre ratio reaches a reasonable ratio；Clamped will lead to slowly a large amount of resin be inhaled into resin trap (here it is
The purposes of resin trap).Resin feeding pipe is clamped too early or too late, is not big problem.If clamping resin feeding too early
Pipe, pipe clamp can be unclamped with the short time allows more resins to flow into make up.Clamp it is too late in the case where, can only just be received by resin
Storage.Note: if a large amount of Excess resin is inhaled into resin trap, resin may start significant heat release, and
Start to smolder.In case of such case, these resin heat releases can only be waited to calm down gradually.Here it is try not to clamp tree too late
The main reason for rouge feed pipe；
18) continue to supervise resin guide:, part complete water conservancy diversion tight along with resin feeding pipe clamp, wait resin solid at this time
Change；Vacuum pump should keep working condition during cure cycle, until product is fully cured, obtain the vehicle of carbon fibre composite
Body A；Due to excessive hybrid resin build up together can sharply heat release, the resin in the head tank of part need to be disposed；If needed
Accelerate resin solidification, former will be turned over and be put into the solidification of baking oven high temperature, or product is made to carry out solidification at room temperature as high temperature
Cured alternative, both methods have not significant impact quality of item；
19) demould: vacuum pump should continue working, and until component is fully cured, vacuum bag film is torn i.e. from former
It can get the automobile body B of carbon fibre composite；It is just thrown away although sealant tape and flow-guiding screen are always finished, in certain situations
Under, vacuum bag film and sealant tape can retain and recycle.For example sealant tape can be used when next former seals
In the repairing of minute leaks；
(4) vehicle body outside surface is handled:
1) recess poly-putty base filling-in existing for the covering demoulding rear surface by automobile body B；
2) it is polished from thick to thin with silicon carbide paper P80-P500；
3) with fill out eye ash mend dit；
4) with the entire product surface of silicon carbide paper polishing of P240-P1200；
5) spray painting coating can be obtained final products after the completion of polishing.
19 in step (3)) demoulding step it is as follows:
1. cutting the surrounding edge of the vacuum bag film of the vehicle body A of carbon fibre composite and removal；
2. removing the sealant tape at former edge, it is most effective for quickly wrenching；
3. removing injecting glue seat, the solidified resin being sticked on injecting glue seat is removed completely, these injecting glue seats are can to repeat to make
?；
4. removing and throwing away flow-guiding screen；
5. release cloth and product are taken off from former together；
6. carefully tearing release cloth, product is not damaged.
1 in step (4)) it will be during recess poly-putty base filling-in existing for the covering of automobile body B demoulding rear surface:
1) it when the appearance of automobile body B covering is cracked, should carry out minute observation first, judge the depth of crackle
Whether carbon fibre composite is reached；
If 2) crackle only occurs from poly-putty base filling-in, painted again with filling out after eye ash filling-in to polish；
If 3) carbon fibre composite is cracked, inside body outer skin with after carbon fiber cloth reinforcement with fill out eye ash mend
It polishes after flat reparation of painting again.
One end of the vacuum tube has the inclination angle of 45° angle, then passes through one end with inclination angle of vacuum tube true
Aperture on empty bag film pushes in vacuum tube, promotes in the aperture at the top of injecting glue seat, by surrounding one around vacuum tube
Circle sealant tape is sealed to hose on vacuum bag, by secured, it is ensured that no change has taken place for sealant tape sealed environment.
The 13 of step (3)) in: if the vacuum bag position of sealing former E is improper when needing to move, due to vacuum bag
Film starts gradually to become tight, vacuum bag not vacuumized completely, temporarily turn off vacuum pump, at this moment moves what needs relocated
A little folds are done in vacuum bag, the place needed, it is ensured that the gap for not having vacuum bag to bridge on former；If vacuum bag film size is not
Enough big, it will bridge the vacuum bag film that just can not retighten in the certain point of former to repair and have adjusted；If
This situation occurs, it should stop, removing sack and sealant tape tries again again.
The 14 of step (3)) it tests in vacuum, when hermetically sealed, the sound of pump can be slightly changed, and the steam of pumping fluid can stop
It is only evaporated from vacuum pump, on this node, carries out vacuum " fall-down test ", turn off vacuum pump, continue at least 20 minutes,
Then meticulous inspection vacuum meter；If index decreased, that is, determine that vacuum bag film has leakage, it is necessary to be adjusted；If no
It is fully sealed, vacuum bag film and sealant tape is firmly pressed, then carry out vacuum test, until being fully sealed.
Embodiment 2 is according to a kind of sealing of carbon fibre composite racing body manufacturing method building described in embodiment 1
Cavity block system, including former 1, vacuum bag 2 and injecting glue seat are turned over, the upper surface for turning over former 1 is successively arranged de- from inside to outside
Mould oxidant layer 11, first layer demoulding layer of cloth 12, carbon fibre cloth layer 13, second layer demoulding layer of cloth 14 and water conservancy diversion stratum reticulare 15；It is described true
The opposite both sides of empty bag 2 are respectively provided with an injecting glue seat 21, and the corresponding resin feeding helix tube 22 of each injecting glue seat 21, note
Rubber base 21 is fixed on the intermediate position of resin feeding helix tube 22；Described 22 one end of resin feeding helix tube, which extends to, turns over former 1
Water conservancy diversion stratum reticulare 15, the other end passes through the lower wing passage of injecting glue seat 21；One of injecting glue seat 21 is as resin inlet 211 and tree
The connection of rouge head tank；Another injecting glue seat 21 is used as vacuum orifice 212, is connected to by vacuum tube with resin trap sealing；It is whole
The former 1 that will entirely turn over from front to back of a 2 corrugationless of vacuum bag or folding line is coated on interior, formation sealed environment.
As shown in Figure 1, arrow represents resin flow direction in figure, the injecting glue seat 23 on 2 right side of vacuum bag is workbench, is made
For resin main-inlet；The injecting glue seat in left side is as vacuum orifice；The outside of vacuum bag 2 is sealed by sealant tape 213.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention also includes art technology
Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (7)
1. a kind of carbon fibre composite racing body manufacturing method, comprising the following steps:
(1) formpiston is manufactured
1) mapping software adds frame configuration, i.e., long axis vertical section is exported in the catia figure for having designed car body shape；
2) skeleton drawing is printed upon on drawing simultaneously label by 1:1, be then attached on PVC foam plate；
3) PVC foam plate is cut out according to drawing, splices PVC skeleton, extruded sheet is filled into skeleton, wherein extruded sheet
Profile has to be larger than PVC board profile, foam special glue fixing PVC foaming framework and extruded sheet, after the dedicated adhesive curing of foam,
Then it polishes according to shape, is seamlessly transitted between two blocks of PVC foam plates, obtain mold A；
4) one layer of epoxy resin is smeared on the surface mold A, prevents poly-putty base from corroding extruded sheet, after epoxy resin cure, smeared
One layer of poly-putty base sealing of hole is smoothed out with scraper scraper plate, is polished after waiting poly-putty base solidification with water-proof abrasive paper, mesh number is from low to high
It polishes, obtains mold B；
5) with brush in mold B surface brushing first layer mold priming paint；
6) it after the first layer mold solidifying priming paint of mold B surface, is carried out from thick to thin using P80~P240 dry sand paper second
Polishing obtains mold C；
7) expose material part to mold C with a small amount of poly-putty base to repair, obtain mold D；
8) after the solidification of the poly-putty base on the surface mold D, in mold D external coating second layer mold priming paint, mold E is obtained；
9) after carrying out third time polishing to mold E from thick to thin with the sand paper of P80~P500, with the water-proof abrasive paper of P500~P800
Water mill is carried out to it；
10) after water is dry, brushing bloom gel coat obtains mold F；
11) the 4th polishing is carried out to mold F from thick to thin with P80~P500 dry sand paper, then with the resistance to water sand of P500~P1200
Paper carries out water mill, obtains bright formpiston；
(2) former is turned in manufacture:
1) male mold surfaces pre-process: first having to be surface-treated formpiston obtained before making glass reinforced plastic former, that is, use
Alcohol wipe male mold surfaces clean the spot of male mold surfaces, obtain clean formpiston, are defined as formpiston A；
2) it coats chemical release agent: in the surface coated with multiple layer chemistry release agent of formpiston A, forming releasing agent layer, every stratification is de-
Mould oxidant layer wipes extra part after volatilizing 5-30 seconds after coating；At least 15 minutes are needed between every stratification releasing agent layer
Curing time at least needs to solidify after being painted with the last layer a hour, obtains the mold with multilayer chemistry release agent, fixed
Justice is formpiston B；
3) flange made is fixed on the edge formpiston B with hot melt adhesive, with the seam between pressure sensitive adhesive tape sealing PP cored slab
Gap obtains formpiston C；
4) with the gap of filling wax sealing flange and formpiston C, pay attention to drafting angle, obtain formpiston D；Wherein drafting angle controls
At -30 °~+30 °；
5) in the external coating mould gel coat layer of formpiston D, wherein mould gel coat layer coats in two times, the overall thickness of mould gel coat layer
It controls in 0.8mm, wherein first layer brush 0.3-0.4mm uniform thickness, after solidification 2-3 hours of 20 DEG C of room temperature, then the brush second layer
0.3-0.4mm thickness at least solidifies 4 hours at room temperature, places a night, obtains the mold with coating die gel coat, is defined as sun
Mould E；
6) in formpiston E external coating glass fibre as coupling layer, ensure own in painting process on the docile and obedient formpiston E of glass fibre
Turning, pay particular attention to the place of wedge angle, thus obtain the mold with coupling layer, be defined as formpiston F；
7) in formpiston F external coating laminated resin: at least spreading 4 layers of glass fibre, one layer of resin is brushed on formpiston F and then spreads one
Layer glass fibre, one layer of resin correspond to layer of glass, and the dosage of each layer of resin is to be coated with glass fiber quality on it
4 times, glass fibre is all coated on formpiston E；When starting solidification, color will become dark-brown from brown, protect
Resin curing time is demonstrate,proved at 24 hours or more；Wherein the weight ratio of resin and glass fibre is 4:1, is then solidified 24 hours,
Former is turned in acquisition；
(3) carbon fibre composite vehicle body is manufactured:
1) multilayer chemistry release agent is coated turning over female mold surfaces, be at least spaced between every layer 15 minutes, after the last layer is painted with
After at least wanting 1 hour, former A is turned in acquisition；
2) turning over the surface former A addition first layer demoulding layer of cloth, this layer of release cloth be seal former in first layer, be one layer can
The cloth torn is torn after completing component, guarantees that release cloth can cover carbon cloth, is obtained and is turned over yin with demoulding layer of cloth
Mould is defined as turning over former B；
3) it places carbon cloth on demand on the release layer for turning over former B, and is gently fixed with adhesive tape, obtain band carbon fiber
Layer of cloth turns over former, is defined as turning over former C；
4) in the surface addition second layer demoulding layer of cloth for turning over former C, this layer of demoulding layer of cloth is equally one layer of cloth that can be torn,
It will be torn after completing component, guarantee that release cloth can cover carbon cloth, former D is turned in acquisition；
5) it adds water conservancy diversion stratum reticulare: flow-guiding screen being cut into as demoulding layer of cloth size or overlayed on after bigger shape and turns over former D
Release cloth layer surface positioned at upper layer, flow-guiding screen extend sufficiently into injecting glue seat, it is ensured that once vacuumizing, resin is from vacuum tube and tree
It is freely extended through in rouge feed auger pipe in the carbon fibre cloth layer for turning over former D, obtain covering water conservancy diversion stratum reticulare turns over former, is defined as
Turn over former E；
6) fixed helix tube: two resin feeding helix tubes being separately fixed on the flow-guiding screen turned on opposite two sides former E,
So that resin is rapidly and evenly distributed along the side for turning over former E to the other side, it is ensured that resin is from helix tube influent stream to flow-guiding screen
In；
7) position injecting glue seat: the lower wing passage of injecting glue seat is connected to resin feeding helix tube；Resin enters helix tube and wears from the channel
It crosses, it is ensured that resin flows in resin feeding helix tube from vacuum tube by injecting glue seat；Injecting glue seat is fixed on resin feeding spiral
The intermediate position of pipe, presses injecting glue seat, is mounted to resin feeding helix tube in injecting glue seat, so that helix tube is at the bottom of injecting glue seat
Resin is evenly distributed to the one side for turning over former E by portion；
8) adhesive seal adhesive tape: sealant tape is pasted onto the flange for turning over former E, and one piece of ratio is turned over former E area greatly at least
50% vacuum bag film, since in corner, the paper at peel seal adhesive tape back is pressed vacuum bag film, is adhered to exposed
On sealant tape, vacuum bag film and sealant tape is made to stick together, establish a sealed environment, whole process guarantees vacuum bag
Entirely turning over former E from front to back and covering for corrugationless or folding line, forms sealing cavity block system；
9) connection and sealing resin feeding tank: all vacuum bag films are after all heap is folded, i.e., carbon cloth is sealed to vacuum bag
In, the breach of lane one on the vacuum bag film of resin feeding connector connects resin diversion pipe, and resin passes through injecting glue from head tank
Seat swimmingly flows in sealing cavity block system；
10) connection and sealing resin trap: cutting one section of sufficiently long vacuum tube, for connecting resin trap and connecting
That injecting glue seat on the injecting glue seat opposite of resin feeding tank, being sealed after vacuum tube one end propulsion vacuum bag with sealant tape, very
The blank pipe other end is connected to the import accessory of resin trap, and vacuum tube is protruded into resin trap liner, prevents drop of resin
On the outside of to liner, then by import accessory is tightened clockwise, sealed environment is formed；
11) vacuum pump and resin trap are connected: preparing two vacuum tubes, and is connected two vacuum tubes with check-valves, is connected
One end of vacuum tube afterwards is connected to the import accessory of resin trap, pushes vacuum tube to pass through import accessory and enters resin receipts
Then a small distance in storage tightens accessory by clockwise；The other end of vacuum tube is connected on vacuum pump；In this process
In, the direction of check-valves is that air flows to vacuum pump, on the contrary then cannot circulate；
12) resin feeding line is clamped, that is, connects the vacuum tube of resin head tank and injecting glue seat: being placed at the beginning of resin feeding tank
Pipe clamp, rotation wing nut close pipe clamp, it is ensured that have created a sealed environment；
13) air is evacuated, vacuum bag is adjusted, it is ensured that vacuum pump connects correct voltage, suitably pours into pumping fluid, connects main electricity
Vacuum pump after surrounding as needed moves and fixes vacuum bag film to suitable position, is opened in source, when air is by from vacuum bag
When inside taking away, vacuum bag film, which is tightly attached to, turns over the surface former E；
14) it tests vacuum: opening vacuum pump and evacuate vacuum bag, sentenced by having detected whether that pumping fluid is evaporated from pump
In disconnected vacuum bag whether perfect vacuum, and examine whether determination vacuum bag film is let out by corresponding vacuum " fall-down test "
Leakage, it is necessary to vacuum bag is adjusted, water conservancy diversion work can be taken up until being fully sealed；
15) the correct dosage of resin and curing agent is calculated, and as needed by the resin of needs and curing agent by correct ratio
After example mixes, it is added in resin feeding tank；
16) resin feeding pipe is opened, when vacuum pump operation, gently unscrews the pipe clamp of resin feeding pipe, when unscrewing nut Shi Huili
See that resin is sucked into vacuum tube and starts water conservancy diversion quarter, to ensure that the importing of resin is not any way limited when unclamping nut；
17) it monitors water conservancy diversion: when resin guide infiltration 60%~80%, closing the pipe clamp of resin feeding pipe；
18) continue to supervise resin guide: tight along with resin feeding pipe clamp, the complete water conservancy diversion in part waits resin solidification at this time；?
Vacuum pump should keep working condition during cure cycle, until product is fully cured, obtain the vehicle body A of carbon fibre composite；
Due to excessive hybrid resin build up together can sharply heat release, the resin in the head tank of part need to be disposed；If necessary to add
Fast resin solidification will turn over former and be put into the solidification of baking oven high temperature, or product is made to carry out solidification at room temperature as hot setting
Alternative, both methods has not significant impact quality of item；
19) demould: vacuum pump should continue working, and until component is fully cured, vacuum bag film is torn from former to be obtained
Obtain the automobile body B of carbon fibre composite；
(4) vehicle body outside surface is handled:
1) recess poly-putty base filling-in existing for the covering demoulding rear surface by automobile body B；
2) it is polished from thick to thin with silicon carbide paper P80-P500；
3) with fill out eye ash mend dit；
4) with the entire product surface of silicon carbide paper polishing of P240-P1200；
5) spray painting coating can be obtained final products after the completion of polishing.
2. a kind of carbon fibre composite racing body manufacturing method as described in claim 1, it is characterised in that: step (3)
In demoulding step 19) it is as follows:
1. cutting the surrounding edge of the vacuum bag film of the vehicle body A of carbon fibre composite and removal；
2. removing the sealant tape at former edge, it is most effective for quickly wrenching；
3. removing injecting glue seat, the solidified resin being sticked on injecting glue seat is removed completely, these injecting glue seats may be reused；
4. removing and throwing away flow-guiding screen；
5. release cloth and product are taken off from former together；
6. carefully tearing release cloth, product is not damaged.
3. a kind of carbon fibre composite racing body manufacturing method as described in claim 1, it is characterised in that: step (4)
In 1) will be during recess poly-putty base filling-in existing for the covering of automobile body B demoulding rear surface:
1) when the appearance of automobile body B covering is cracked, should carry out minute observation first, judge crackle depth whether
Reach carbon fibre composite；
If 2) crackle only occurs from poly-putty base filling-in, painted again with filling out after eye ash filling-in to polish；
If 3) carbon fibre composite is cracked, inside the body outer skin with after carbon fiber cloth reinforcement with after filling out eye ash filling-in
Polishing is painted reparation again.
4. a kind of carbon fibre composite racing body manufacturing method as described in claim 1, it is characterised in that: the vacuum
One end of pipe has the inclination angle of 45° angle, and one end with inclination angle of vacuum tube is then passed through the aperture on vacuum bag film
Vacuum tube is pushed in, is promoted in the aperture at the top of injecting glue seat, makes a circle sealant tape hose by wrapping around vacuum tube
It is sealed on vacuum bag, by secured, it is ensured that no change has taken place for sealant tape sealed environment.
5. a kind of carbon fibre composite racing body manufacturing method as described in claim 1, it is characterised in that: step (3)
13) in: if the vacuum bag position of sealing former E is improper when needing to move, since the film of vacuum bag starts gradually to become
Tightly, vacuum bag not vacuumized completely, temporarily turns off vacuum pump, at this moment moved the vacuum bag for needing to relocate, need
Do a little folds in place, it is ensured that the gap for not having vacuum bag to bridge on former；If vacuum bag film size is not big enough, it will bridge joint
In the certain point of former, the vacuum bag film that just can not retighten is repaired and is had adjusted；If it happens this situation,
It should stop, removing sack and sealant tape tries again again.
6. a kind of carbon fibre composite racing body manufacturing method as described in claim 1, it is characterised in that: step (3)
14) test vacuum in, when hermetically sealed, the steam of pumping fluid can stop being evaporated from vacuum pump, on this node, into
Row vacuum " fall-down test ", turns off vacuum pump, continues at least 20 minutes, then meticulous inspection vacuum meter；If index decreased, i.e.,
Determine that vacuum bag film has leakage, it is necessary to be adjusted；If endless hermetically sealed, vacuum bag film and sealant are firmly pressed
Band, then vacuum test is carried out, until being fully sealed.
7. a kind of sealing cavity block system of carbon fibre composite racing body manufacturing method building according to claim 1
System, it is characterised in that: including turning over former, vacuum bag and injecting glue seat, the upper surface for turning over former is successively arranged from inside to outside
Releasing agent layer, first layer demoulding layer of cloth, carbon fibre cloth layer, second layer demoulding layer of cloth and water conservancy diversion stratum reticulare；The vacuum bag is opposite
Both sides be respectively provided with an injecting glue seat, and the corresponding resin feeding helix tube of each injecting glue seat, injecting glue seat are fixed on resin
The intermediate position of feed auger pipe；Resin feeding helix tube one end extends to the water conservancy diversion stratum reticulare for turning over former, and the other end passes through
Wing passage under injecting glue seat；One of injecting glue seat is connected to as resin inlet with resin feeding tank；Another injecting glue seat conduct
Vacuum orifice is connected to by vacuum tube with resin trap sealing；The general from front to back of entire vacuum bag corrugationless or folding line
It entirely turns over former and is coated on interior, formation sealed environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710287852.7A CN107116809B (en) | 2017-04-27 | 2017-04-27 | A kind of carbon fibre composite racing body manufacturing method and its sealing cavity block system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710287852.7A CN107116809B (en) | 2017-04-27 | 2017-04-27 | A kind of carbon fibre composite racing body manufacturing method and its sealing cavity block system |
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| Publication Number | Publication Date |
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| CN107116809A CN107116809A (en) | 2017-09-01 |
| CN107116809B true CN107116809B (en) | 2019-05-31 |
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| CN109049758A (en) * | 2018-08-03 | 2018-12-21 | 华南理工大学广州学院 | A kind of vehicle body production method based on carbon fiber former |
| CN110744833B (en) * | 2019-09-20 | 2021-04-06 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Carbon nano tube film/composite material forming method and lightning protection structure manufactured by same |
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| US10357925B2 (en) * | 2013-12-20 | 2019-07-23 | United Technologies Corporation | Enhanced volatile removal for composite layup |
| US10259175B2 (en) * | 2014-11-24 | 2019-04-16 | Alenia Aermacchi S.P.A. | Method for manufacturing a composite part from a preimpregnated material with a semi-crystalline matrix having an amorphous surface layer |
| CN105058814A (en) * | 2015-08-03 | 2015-11-18 | 沈阳闪宁科技有限公司 | Method for manufacturing carbon fiber resin matrix composite |
| CN204894563U (en) * | 2015-08-06 | 2015-12-23 | 浙江工业大学 | Special manufacture equipment of FSAE cycle racing carbon -fibre composite automobile body covering |
| CN106393732A (en) * | 2016-11-29 | 2017-02-15 | 集美大学 | Manufacturing method of yacht |
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