CN101585238B - Integral molding technique and molding system for supersized composite material member - Google Patents
Integral molding technique and molding system for supersized composite material member Download PDFInfo
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- CN101585238B CN101585238B CN2009103039430A CN200910303943A CN101585238B CN 101585238 B CN101585238 B CN 101585238B CN 2009103039430 A CN2009103039430 A CN 2009103039430A CN 200910303943 A CN200910303943 A CN 200910303943A CN 101585238 B CN101585238 B CN 101585238B
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Abstract
The present invention discloses an integral molding technique and molding system for a supersized composite material member. the integral molding technique includes five steps of vacuum bottling pretreatment, automatically mixing glue, vacuum defoamation, pressure regulating buffering and vacuum bottling, the corresponding molding system includes a automatic glue-mixing system, a debubbling pressure regulating buffering system and a vacuum bottling system. The debubbling pressure regulating buffering system includes a vacuum defoamation system, a pressure regulating pump and a buffering container, the automatic glue-mixing system and the vacuum bottling system are communicated with the buffering container through conveying tubes respectively, the vacuum defoamation system and the pressure regulating pump are communicated with the buffering container through air ducts respectively, each conveying tube and air duct are all provided with valves separately; the mixing glue solution after automatically mixing glue is injected to the buffering container and then is injected to a mould for the integral molding with dual pressures of a positive pressure and a vacuum negative pressure in the buffering container. The molding technique of the invention has advantages of raw material saving, high efficiency, strong serviceability, good product effect, safety, environment protection, etc.
Description
Technical field
The present invention relates to a kind of moulding process and system of composite element, relate in particular to a kind of technology and system that utilizes resin transfer moulding assisted vacuum perfusion carrying out composite material forming.
Background technology
Supersized composite material member is meant that those single-piece shaping areas reach more than tens of square metres, single-piece weight reaches more than several tons, the size of certain direction of single-piece reaches tens of meters composite product, as the casing of the wind-driven generator composite material blade more than the MW class, large-scale composite material hull, large-scale track vehicle or top cover or the like.These supersized composite material members adopt hand to stick with paste technology or vacuum perfusion process (being called for short VIP technology, Vacuum Infusion Process) preparation usually.Shortcomings such as hand sticks with paste that technology has that production efficiency is low, working strength big, poor working environment, product quality are wayward, the stable not high and product mechanical property of properties of product is lower.VIP technology originates from Ohio State Univ-Columbus USA, its basic principle be adopt dry method shop layer reinforcing material in advance lay in chunk, then with the sealing of vacuum bag film, utilize vavuum pump to implement vacuum again, utilize pre-configured resin system negative pressure of vacuum to be filled into moulded products in the mould at last.VIP technology is a kind of more advanced composite material process planning, can effectively overcome the above-mentioned shortcoming that hand is stuck with paste technology, thereby in the production of supersized composite material member, adopting VIP technology progressively to replace hand paste technology has become a kind of trend.
Yet, tradition VIP technology is also existing following shortcoming aspect the preparation supersized composite material member: (1) utilizes the negative pressure of vacuum perfusion resin, limit injection pressure can not surpass an atmospheric pressure, thereby the rate of flooding of resin and resin all be restricted the dipping effect of reinforcing material, particularly is being unfavorable for further enhancing productivity aspect the preparation supersized composite material member; (2) the preparation supersized composite material member needs pre-configured a large amount of resin systems, and mixed with resin can't be finished in closed system, can sneak into a large amount of bubbles in the mixed process, and the existence of bubble will have a strong impact on the quality of composite product; And mixing once that the glue amount is big more just to be difficult to mix more, a large amount of resin systems are difficult to repeatedly refinement again and mix, and certainly exist the uneven problem of glue of mixing, and mix the inhomogeneous curing quality that certainly will influence composite product of glue; Moreover, these are in advance with resin and the good resin system of curing agent mixed configuration, need tun to come splendid attire, and the resin system that is contained in the tun causes resin system viscosity to increase influencing charging efficiency and dipping effect because of fast reaction does not with great difficulty take place heat dispersion, even may cause resin system generation implode and can't use; (3) after a large amount of resin systems prepare; if in use need shutdown debugging or other odjective causes to cause the resin importing process temporarily to be interrupted because of vacuum system goes wrong; then the resin system that do not import of residue will continue to react and become unavailable, causes a large amount of resin systems to slattern probably.The problems referred to above are traditional VIP technology more common problems in preparation supersized composite material member process.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide that a kind of conservation, efficient height, applicability are strong, the supersized composite material member integral forming technique of good product effect, safety and environmental protection, a kind of compact conformation, complete function, the formation system that can be used for above-mentioned moulding process easy for operation also are provided.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of supersized composite material member integral forming technique, it is characterized in that: described integral forming technique comprises the priming by vacuum preliminary treatment, automatically mix glue, vacuum defoamation, five steps of pressure regulation buffering and priming by vacuum, the mixed glue solution that obtains behind the described automatically mixed glue is injected into and carries out described vacuum defoamation and pressure regulation buffered in the buffer container, after the pressure regulation buffered, malleation in the described buffer container reaches 0.5atm～1.0atm, is injected into described composite element global formation under the dual-pressure of the negative pressure of vacuum that malleation that described mixed glue solution forms and priming by vacuum form with in the mould in buffer container.
Above-mentioned supersized composite material member integral forming technique, be that a kind of resin transfer moulding assisted vacuum instillation process (is called for short RTMAVIP in essence, Resin Transfer Molding assisted Vacuum Infusion Process), it utilizes the advantage of resin transfer moulding (RTM) technology that the traditional vacuum instillation process has been carried out significant improvement, pressure when making priming by vacuum can be regulated by buffer container, and press and the double action of negative pressure of vacuum is carried out priming by vacuum by buffer container, improved the efficient and the vacuum-impregnated effect of priming by vacuum greatly.
In the technique scheme, described priming by vacuum pre-treatment step specifically is meant: the described global formation mould of cleaning finishing earlier, spraying releasing agent and gel coat on mould, cutting again, the lay reinforcing material also covers with release cloth, on release cloth, lay priming by vacuum auxiliary material (flow-guiding cloth for example, lead the interior vacuum pipeline of sebific duct and die cavity etc.) to make up the glue flow guide system, set gum-injecting port and bleeding point, on mould, seal (reinforcing material on the mould and glue flow guide system all should be included in the die cavity of sealing back formation) with ground floor vacuum bag film then, obtain ground floor bag film system, vacuumize and detect die cavity air-tightness (general requirement can keep the constant vacuum negative pressure at least 30 minutes); Ground floor bag film system air-tightness reaches after the requirement with second layer vacuum bag film again and seals described ground floor bag film system, and vacuumizes and detect die cavity air-tightness (requirement can continue to keep negative pressure of vacuum) once more.It is to be not less than 0.098Mpa in order to ensure vacuum pressure in the follow-up priming by vacuum process that twice sealing and air-tightness detect, and can continue pressurize.
In the technique scheme, described automatically mixed glue step is to carry out in the closed environment system, should mix the glue step automatically specifically is meant: at first will mix the required various raw materials of glue and separately be contained in the different containers, then by transmitting in described raw material to a mixing device of pump continuous drawing, each raw material that will extract by this mixing device stirs and obtains mixed glue solution, mixed glue solution is injected described buffer container on one side, the described raw material of continuous drawing mixes glue on one side, until reaching desired mixed glue amount; The quality that each raw material extracts is by meter metering and control.The independent adhesive process that mixes automatically is existing comparatively ripe technological operation, is of the present invention one big characteristics but will mix automatically that adhesive process combines with steps such as vacuum defoamation of the present invention, pressure regulation buffering, primings by vacuum; Automatically the technological parameters such as mixed glue amount that mix in the glue can be set up on their own according to practice demand by those skilled in the art.
In the technique scheme, described vacuum defoamation step specifically is meant: after treating that mixing the mixed glue solution that obtains in the glue automatically is injected into described buffer container, to this buffer container be evacuated to continuously vacuum≤-0.098Mpa, and suggestion keeps vacuum state 10min～20min, unload vacuum then, repeat to be evacuated down to preferred 2～3 times of the process of unloading, carry out follow-up pressure regulation buffered after leaving standstill 5min～10min at last.The time of vacuum defoamation should not be too short, otherwise deaeration may be not thorough, but the oversize time and the production cycle that can influence whole moulding process.
The present invention also provides a kind of formation system that can be used for above-mentioned supersized composite material member integral forming technique, it is characterized in that described formation system comprises automatically mixed colloid system, deaeration pressure regulation buffer system and priming by vacuum system, described deaeration pressure regulation buffer system comprises the vacuum defoamation system, pressure regulating pump and buffering container, this buffer container is mainly used in the mixed glue solution after splendid attire mixes, described pressure regulating pump is mainly used in regulates buffer container pressure, after regulating, generally priming by vacuum pressure can be brought up to about 1.5atm～2atm (containing the priming by vacuum negative pressure), a Pressure gauge can be installed on the buffer container with the pressure size in the observation buffer container; Described colloid system and the priming by vacuum system mixed automatically is connected with described buffer container by transfer pipeline respectively, and described vacuum defoamation system and pressure regulating pump are connected with described buffer container by wireway respectively; Be respectively equipped with valve on described each bar transfer pipeline and the wireway.
Be provided with a deaeration pressure regulation buffer system in the above-mentioned formation system of the present invention, it is advantageous that this deaeration pressure regulation buffer system has glue deaeration and perfusion supercharging two big functions simultaneously, utilize the vacuum defoamation system that the mixed glue solution in the buffer container is carried out deaeration in the vacuum defoamation stage and handle, this moment, pressure regulating pump was closed; Then close the vacuum defoamation system in pressure regulation buffering and priming by vacuum stage, pressure regulation increases injection pressure, improves the impregnating speed of mixed glue solution.
In the above-mentioned formation system, the described colloid system that mixes automatically generally comprises a plurality of material containers (for example resin, the curing agent as raw material should be contained in respectively in the different material containers) that transmit pump, mixing device and splendid attire different material, described a plurality of material container transfer pipeline by separately respectively is connected with described mixing device via transmitting pump, is respectively equipped with meter on each the bar transfer pipeline between described transmission pump and material container; Described mixing device is communicated with buffer container by transfer pipeline again.After joining glued bundle, should in time extract described mixing device inner chamber and each transfer pipeline that mixes colloid system automatically of acetone cleaning, can use to keep Plant in good condition.Should automatically mix colloid system is the human metering operations improvement in the traditional vacuum instillation process Automatic Extraction, accurate measurement in the closed system, and the glue that once mixes of a large amount of resins in the traditional handicraft, curing agent is improved to by closed system and extracts, evenly mixes automatically glue step by step.Building block, basic structure and the automatic control circuit that should mix in the colloid system automatically are prior art, but we combine it and form above-mentioned formation system with other devices, and being applied to supersized composite material member integral forming technique of the present invention, this area that is combined in of this technical scheme has significant values and meaning.
In the above-mentioned formation system, described vacuum defoamation system generally comprises deaeration vavuum pump and deaeration glue gatherer, the deaeration vavuum pump is communicated with deaeration glue gatherer by wireway, deaeration glue gatherer is mainly used in the mixed glue solution that collection is extracted out from the buffering container by the vacuum defoamation system, and a configurable vacuum meter is with the observed pressure size on the deaeration glue gatherer; Described deaeration glue gatherer is communicated with buffer container by another wireway.By this vacuum defoamation system can make things convenient for, environmental protection, the deaeration of finishing mixed glue solution apace handle.
In the above-mentioned formation system, described priming by vacuum system (system that promptly is used for the composite form) generally comprises form mould, potting compound collection and perfusion vavuum pump; Described form mould is the single face rigid die, be covered with flexible vacuum bag film outward and form a molding chamber, mould top lay in the die cavity has the reinforcing material preform, this reinforcing material preform can be pure fibre reinforcement or fabric jacket sandwich structure preform, cover with release cloth on the reinforcing material preform, release cloth is provided with by high permeability flow-guiding cloth (be used for water conservancy diversion and improve the mixed glue solution flowing velocity), lead sebific duct, the glue flow guide system that permeable mediums such as vacuum pipeline constitute, described flow-guiding cloth, leading permeable medium materials such as sebific duct can use flexibly according to the shaped component situation, must remove fully behind the member curing molding; Release cloth is mainly used in isolates glue flow guide system and reinforcing material preform, the convenient auxiliary material such as permeable medium and vacuum bag film of behind the member curing molding, removing, prevent that water conservancy diversion from bonding together with auxilliary material and reinforcing material preform, guarantee the member products surface quality.Described perfusion vavuum pump is communicated with the potting compound collection by wireway, and described potting compound collection is communicated with described shaping mold cavity by wireway, and described shaping mold cavity is communicated with buffer container by transfer pipeline.The effect of potting compound collection mainly is to collect the mixed glue solution that is drawn out of in the priming by vacuum process, prevents from that unnecessary glue directly is extracted into to damage vavuum pump in the vavuum pump; Described potting compound collection also can set a vacuum meter, with the direct reference frame as control vacuum pressure and detection die cavity vacuum.
Compared with prior art, the invention has the advantages that the supersized composite material member integral forming technique that proposes and realized a kind of efficient, environmental protection, the advantage of its abundant binding resin transfer modling technology has been carried out significant improvement to vacuum perfusion process, promptly before priming by vacuum, set up a pressure regulation buffer step, to break through the less limitation of injection pressure in the existing vacuum perfusion process, increase injection pressure as required, improve the impregnating speed of glue, improve the production efficiency of composite element, shorten the composite element molding cycle.Simultaneously, the present invention continues to use the packing forms of vacuum perfusion process one-side mould and the encapsulation of flexible vacuum bag film, add the effect of adjustable injection pressure, make vacuum perfusion process be more suitable for the moulding of the supersized composite material member that size is big, area is big, weight is big.In addition, the present invention by improve the preparation mixed process of priming by vacuum glue, make join glue can be in closed system Automatic Extraction, measure and mix, glue is joined in this sealing serialization not only can improve the quality and the efficient of joining glue, and help reducing the glue waste, improve production environment.
Improvement at above-mentioned moulding process, the present invention also provides a kind of formation system that can be used in the above-mentioned moulding process, a significant advantage of this formation system is to have set up a cover deaeration pressure regulation buffer system, the vacuum defoamation device that is about to be provided with separately in the prior art combines with the pressure regulation buffer system that the present invention sets up, be integrated into one and have more globality, compactedness and polyfunctional deaeration pressure regulation buffer system, make that functional stronger, the integration of whole formation system is better, more reasonable structure, use be more convenient; By again in conjunction with the colloid system that automatically mixes of the prior art, and the annexation between each system, pipeline laid be optimized, making whole mixed glue, deaeration, pressure regulation, priming by vacuum to link up in the formation system of an integral body carries out, interknit between each subsystem but be independent of each other, improved the production efficiency and the product quality of composite element greatly.
In addition, whole glue process, glue dipping process and the curing molding process of joining of the present invention all finished in sealing system, can effectively avoid atmosphere to sneak into glue and form the aeration product quality, effectively enhances productivity, avoid the waste of important raw and processed materials such as resin, curing agent, reduce production costs.
Description of drawings
Fig. 1 is the structural representation of formation system of the present invention;
Fig. 2 is the moulding process flow chart of the embodiment of the invention 1;
Fig. 3 is the moulding process flow chart of the embodiment of the invention 2.
Marginal data:
1, mixes colloid system automatically; 11, transmit pump; 12, mixing device; 13, material container; 14, the first charging valve; 15, the second charging valve; 16, meter; 17, plastic emitting valve; 2, deaeration pressure regulation buffer system; 21, buffer container; 22, pressure regulating pump; 23, vacuum defoamation system; 231, deaeration vavuum pump; 232, deaeration glue gatherer; 233, deaeration vacuum meter; 24, deaeration opens and closes valve; 25, pressure regulation opens and closes valve; 26, Pressure gauge; 27, injecting glue valve; 3, priming by vacuum system; 31, form mould; 32, potting compound collection; 33, perfusion vavuum pump; 34, vacuum bag film; 35, reinforcing material preform; 36, release cloth; 37, flow-guiding cloth; 38, lead sebific duct; 39, perfusion vacuum meter; 310, vacuum pipeline; 4, transfer pipeline; 5, wireway
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing technical solution of the present invention is described in detail.
Embodiment 1: prepare certain large-scale composite material wind-power blade housing
Use a kind of formation system of the present invention as shown in Figure 1 among the preparation technology of present embodiment, this formation system comprises colloid system 1, deaeration pressure regulation buffer system 2 and the priming by vacuum system 3 mixed automatically.
Automatically mix colloid system 1 and comprise transmission pump 11, mixing device 12 and two material containers 13, be loaded with resin and curing agent (blade special epoxy resin 1564 and curing agent 3486 that the selected resin system of the preparation of present embodiment wind electricity blade housing provides for Huntsman company) in two material containers 13 respectively, two material containers 13 transfer pipeline 4 by separately respectively are connected with the charging aperture of mixing device 12 via transmitting pump 11, are being respectively equipped with the first charging valve 14 and the second charging valve 15 on close two transfer pipelines 4 at mixing device 12 charging aperture places.Be respectively equipped with two meters 16 on two transfer pipelines 4 that transmission pump 11 and material container are 13, be used for the extraction amount of automatic gauge material resin and curing agent.The gum outlet that is provided with in the mixing device 12 is communicated with the buffer container 21 of deaeration pressure regulation buffer system 2 by transfer pipeline 4, and the transfer pipeline 4 at close mixing device 12 gum outlet places is provided with a plastic emitting valve 17.
Deaeration pressure regulation buffer system 2 comprises vacuum defoamation system 23, pressure regulating pump 22 and aforesaid buffer container 21.Vacuum defoamation system 23 comprises deaeration vavuum pump 231 and deaeration glue gatherer 232, deaeration vavuum pump 231 is communicated with deaeration glue gatherer 232 by wireway 5, deaeration glue gatherer 232 is communicated to the top of buffer container 21 by wireway 5, opening and closing valve 24 near being provided with a deaeration on this wireway 5 of buffer container 21 positions, deaeration vavuum pump 231 is by vacuumizing to remove the bubble in the mixed glue solution in the buffer container 21,232 of deaeration glue gatherers are mainly used in the mixed glue solution that collection is extracted out from buffering container 21 by deaeration vavuum pump 231, the size of vacuum when deaeration glue gatherer 232 tops are equipped with a deaeration vacuum meter 233 with the observation deaeration.Pressure regulating pump 22 is communicated to buffer container 21 tops by wireway 5, opening and closing valve 25 near being provided with a pressure regulation on this wireway 5 of buffer container 21 positions, pressure regulating pump 22 is used for regulating the pressure of buffer container 21, and buffer container 21 tops are equipped with a Pressure gauge 26 with the pressure size in the observation buffer container 21.
Priming by vacuum system 3 comprises form mould 31, potting compound collection 32 and perfusion vavuum pump 33.Form mould 31 is a single face rigid die, and this single face rigid die has the ideal gas closure, do not allow to exist any gas leakage point, and smooth surface is smooth; This mould is covered with flexible vacuum bag film 34 outward, vacuum bag film 34 (present embodiment is two-layer) surrounds a molding chamber jointly with form mould 31, mould top lay in the die cavity has reinforcing material preform 35, cover with release cloth 36 on the reinforcing material preform 35, release cloth 36 is provided with by high permeability flow-guiding cloth 37, leads the glue flow guide system that permeable mediums such as sebific duct 38, vacuum pipeline 310 constitute.Perfusion vavuum pump 33 is communicated to potting compound collection 32 tops by wireway 5, potting compound collection 32 is communicated with the bleeding point of shaping mold cavity by wireway 5, potting compound collection 32 tops are equipped with perfusion vacuum meter 39, with the direct reference frame as vacuum in control vacuum pressure and the detection die cavity.The gum-injecting port that the shaping mold cavity top is provided with is connected with the gum outlet that buffer container 21 bottoms are provided with by transfer pipeline 4, is being provided with an injecting glue valve 27 near on this transfer pipeline 4 of buffer container 21 bottom positions.
Preparation technology's flow process of above-mentioned large-scale composite material wind-power blade housing (hereinafter to be referred as " vane member ") as shown in Figure 2, concrete preparation method may further comprise the steps successively:
1, priming by vacuum preliminary treatment: at first prepare the form mould 31 that this vane member is used, and this mould is cleared up, repair smooth; Detect the air-tightness of this mould then, reach after the requirement, spray gel coat again at the mould surface spraying releasing agent; (this vane member comprises with reinforcing material: (1) surface density 1200g/m according to designing requirement cutting, lay reinforcing material then
2Three axial weaving fiberglass cloth; (2) surface density 800g/m
2Twin shaft to weaving fiberglass cloth; (3) surface density 1250g/m
2The unidirectional glass cloth of band 50g felt; (4) density 150kg/m
3Balsa wood clamp core material; (5) density 60kg/m
3PVC foam core material) to form a reinforcing material preform 35, cover this reinforcing material preform 35 fully with a release cloth 36, again according to the size and dimension characteristic of vane member, on release cloth 36, lay flow-guiding cloth 37, vacuum pipeline 310 equal vacuums of leading in sebific duct 38 and the die cavity pour into auxiliary material to form the glue flow guide system, set gum-injecting port and bleeding point in the shaping mold cavity simultaneously, use 34 pairs of moulds of vacuum bag film (containing whole reinforcing material preform 35 and glue flow guide system on the mould) of ground floor to seal the ground floor bag film system that obtains then, structure by above-mentioned priming by vacuum system connects the priming by vacuum system, and unlatching perfusion vavuum pump 33 vacuumizes detection die cavity air-tightness (keeping negative pressure of vacuum 30 minutes); After ground floor vacuum bag film packaging air tightness reaches requirement,, and vacuumize continuation inspection air-tightness, reach requirement (requirement can continue to keep negative pressure of vacuum) until air-tightness with the whole ground floor bag film of the vacuum bag film 34 sealings system of the second layer.
After the form die cavity was pressed above-mentioned steps filling, good seal, structure and the connected mode according to above formation system assembled formation system again; In the non-injecting glue stage, injecting glue valve 27 is in closure state.
2, mix glue automatically: at first open the first charging valve 14 and the second charging valve 15 in the formation system, close plastic emitting valve 17, automatically mix colloid system 1 and require to take out glue, metering automatically, and in mixing device 12, resin and the curing agent that extracts mixed according to control; Open plastic emitting valve 17 then, by transmitting pump 11 mixed glue solution is injected in the buffer container 21, constantly extracting new resin and curing agent simultaneously adds in the mixing device 12, after arriving desired mixed glue amount, close plastic emitting valve 17, the first charging valve 14 and the second charging valve 15, stop injecting glue.
3, vacuum defoamation: after treating automatically to mix mixed glue solution behind the glue and being injected in the buffer container 21, open deaeration and open and close valve 24, and the mixed glue solution of opening in 231 pairs of buffer containers 21 of deaeration vavuum pump carries out the deaeration processing, defoaming method reduces to for vacuumizing the vacuum that makes in buffer container 21 and the deaeration glue gatherer 232 continuously-below the 0.098Mpa, keep this vacuum state 10min, unload vacuum then, repetitive operation is twice again, deaeration vacuum meter 233 is in open state in the deaeration process, and pressure regulating pump 22, pressure regulation open and close valve 25 and 26 on Pressure gauge is in closed condition.
4, pressure regulation buffering: after the mixed glue solution after the deaeration leaves standstill 5min～10min, close vacuum defoamation system 23 and deaeration and open and close valve 24, open Pressure gauge 26 and pressure regulation then and open and close valve 25, normal pressure in the buffer container 21 is increased to 0.5atm by pressure regulating pump 22.
5, priming by vacuum: after treating the pressure stability in the buffer container 21, open injecting glue valve 27, mixed glue solution is filled in the shaping mold cavity under the dual-pressure of the malleation of buffer container 21 and shaping mold cavity negative pressure, and the reinforcing material preform 35 in the dip forming die cavity, timely closed injecting glue valve 27 and unload pressure in the buffer container 21 behind reinforcing material preform 35 thorough impregnations; After perfusion was finished, shaping mold cavity continued to vacuumize the mixed glue solution complete gel solidification moulding of pressurize until perfusion; After curing molding is finished the cleaning remove the ground floor and the second layer vacuum bag film 34, release cloth 36, flow-guiding cloth 37, lead auxiliary material such as sebific duct 38 and vacuum pipeline 310, the demoulding, finishing obtain the large-scale composite material wind-power blade housing member.
Embodiment 2: preparation large glass steel composite material hull
The preparation technology of present embodiment uses a kind of formation system, the The Nomenclature Composition and Structure of Complexes of this formation system is identical with the formation system of embodiment 1, just " resin system " that loads in the material container with embodiment 1 formation system replaces with " preparation hull mylar and corresponding curing agent commonly used " (Synolite4082-G-22 unsaturated polyester resin that the mylar selected for use of present embodiment provides for Nanjing DSM company, the curing agent of selecting for use is commercially available methyl ethyl ketone peroxide curing agent).
Preparation technology's flow process of above-mentioned large glass steel composite material hull as shown in Figure 3, the operating sequence of its step and embodiment 1 are slightly different, promptly carry out simultaneously step 1 and step 2～4, the concrete operation method of each step is:
Priming by vacuum preliminary treatment: at first be ready to the form mould that hull is used, and this mould is cleared up, repair smooth; Detect the air-tightness of this mould then, reach after the requirement, spray gel coat again at the mould surface spraying releasing agent; (this reinforcing material adopts and meets the glass fibre that vessel designs requires, and it comprises: (1) surface density 1200g/m according to designing requirement cutting, lay reinforcing material then
2Three axial weaving fiberglass cloth; (2) surface density 1200g/m
2Unidirectional glass cloth; (3) surface density 1000g/m
2The glass woven roving; (4) density 60kg/m
3PVC foam core material) operational sequences such as forming a reinforcing material preform, follow-up release cloth shop is covered, the sealing of the setting of laying, gum-injecting port and the bleeding point of auxiliary material, vacuum bag film and air-tightness detection are identical with the corresponding operating of step 1 among the embodiment 1;
When the form die cavity loads as stated above, seals, assemble according to the structure of above formation system and connected mode again and mix colloid system and deaeration pressure regulation buffer system automatically in the formation system;
The concrete operations of ensuing automatically mixed glue, vacuum defoamation and pressure regulation buffering are identical with step 2～4 among the embodiment 1;
Treat that the form die cavity loads as stated above, good seal, and after mixed automatically glue, vacuum defoamation, pressure regulation buffer step are all operated and are finished, connect priming by vacuum system (in the non-injecting glue stage, the injecting glue valve is in closure state all the time) according to the structure of above formation system again and begin to carry out priming by vacuum; The concrete operations of priming by vacuum are identical with the step 5 of embodiment 1, obtain large glass steel composite material hull after priming by vacuum is finished.
Embodiment 3: preparation train glass steel top cover
The preparation technology of present embodiment uses a kind of formation system, the The Nomenclature Composition and Structure of Complexes of this formation system is identical with the formation system of embodiment 1, and just " resin system " that loads in the material container with embodiment 1 formation system replaces with " train top cover preparation flame-retarded resin and corresponding curing agent commonly used " (the KINETIXR118 epoxy resin that the flame-retarded resin selected for use of present embodiment provides for Lars company of section and supporting curative systems).
Preparation technology's flow process of above-mentioned train glass steel top cover is identical with embodiment 1, and the concrete operation method of each step is:
At first be ready to the form mould that the train top cover is used, and this mould is cleared up, repair smooth; Detect the air-tightness of this mould then, reach after the requirement, spray gel coat again at the mould surface spraying releasing agent; (employing meets the glass fibre of train top cover designing requirement, and it comprises: (1) surface density 120g/m according to designing requirement cutting, lay reinforcing material then
2Surperficial felt; (2) surface density 1000g/m
2The glass woven roving; (3) surface density 1200g/m
2Unidirectional glass cloth; (4) surface density 560g/m
24: 1 glass woven cloth; (5) density 80kg/m
3KLEGECELL SR80 foam core material) operational sequences such as forming a reinforcing material preform, follow-up release cloth shop is covered, the sealing of the setting of laying, gum-injecting port and the bleeding point of auxiliary material, vacuum bag film and air-tightness detection are identical with the corresponding operating of step 1 among the embodiment 1;
The concrete operations of ensuing automatically mixed glue, vacuum defoamation, pressure regulation buffering and priming by vacuum are identical with step 2～5 among the embodiment 1, obtain train glass steel top cover after priming by vacuum is finished.
By above-mentioned concrete embodiment as can be known, moulding process of the present invention and formation system are suitable for the global formation of various supersized composite material members such as composite material wind-power blade housing, hull, composite train top cover fully.The global formation that technical scheme of the present invention is applied to supersized composite material member prepares, and can significantly improve production efficiency, and avoids the potential risk of a large amount of resin systems wastes, also helps improving simultaneously the quality of product.
Claims (3)
1. formation system that is used for the supersized composite material member integral forming technique, it is characterized in that described formation system comprises automatically mixed colloid system (1), deaeration pressure regulation buffer system (2) and priming by vacuum system (3), described deaeration pressure regulation buffer system (2) comprises vacuum defoamation system (23), pressure regulating pump (22) and buffering container (21), described colloid system (1) and the priming by vacuum system (3) mixed automatically is connected with described buffer container (21) by transfer pipeline respectively, described vacuum defoamation system (23) and pressure regulating pump (22) are connected with described buffer container (21) by wireway respectively, are respectively equipped with valve on described each bar transfer pipeline and the wireway;
The described colloid system (1) that mixes automatically comprises a plurality of material containers (13) that transmit pump (11), mixing device (12) and splendid attire different material, described a plurality of material container (13) transfer pipeline by separately respectively is connected with described mixing device (12) via transmitting pump (11), and described mixing device (12) is communicated with buffer container (21) by transfer pipeline; Be respectively equipped with meter (16) on each transfer pipeline between described transmission pump (11) and material container (13);
Described vacuum defoamation system (23) comprises deaeration vavuum pump (231) and deaeration glue gatherer (232), and deaeration vavuum pump (231) is communicated with deaeration glue gatherer (232) by wireway; Described deaeration glue gatherer (232) is communicated with buffer container (21) by wireway; Described priming by vacuum system (3) comprises form mould (31), potting compound collection (32) and perfusion vavuum pump (33), described form mould (31) is the single face rigid die, be covered with flexible vacuum bag film outward and form a molding chamber, described perfusion vavuum pump (33) is communicated with potting compound collection (32) by wireway, and described potting compound collection (32) is communicated with described shaping mold cavity by wireway; Described shaping mold cavity is communicated with buffer container (21) by transfer pipeline.
2. integral forming technique with formation system moulding supersized composite material member as claimed in claim 1, it is characterized in that: described integral forming technique comprises the priming by vacuum preliminary treatment, automatically mix glue, vacuum defoamation, five steps of pressure regulation buffering and priming by vacuum, the mixed glue solution that obtains behind the described automatically mixed glue is injected into and carries out described vacuum defoamation and pressure regulation buffered in the buffer container, after the pressure regulation buffered, malleation in the described buffer container reaches 0.5atm～1.0atm, is injected into the composite element global formation under the dual-pressure of the negative pressure of vacuum that malleation that described mixed glue solution forms and priming by vacuum form with in the mould in buffer container;
Described priming by vacuum pre-treatment step specifically comprises following operation: the described global formation mould of cleaning finishing earlier, spraying releasing agent and gel coat on mould, cutting again, lay reinforcing material also cover with release cloth, on release cloth, lay the priming by vacuum auxiliary material to make up the glue flow guide system, set gum-injecting port and bleeding point, seal on mould with ground floor vacuum bag film then, obtain ground floor bag film system, and detect air-tightness; Seal described ground floor bag film system with second layer vacuum bag film again, and detect air-tightness;
Described automatically mixed glue step is to carry out in the closed environment system, should mix the glue step automatically specifically is meant: at first will mix the required various raw materials of glue and separately be contained in the different containers, then by transmitting in described raw material to a mixing device of pump continuous drawing, each raw material that will extract by this mixing device stirs and obtains mixed glue solution, mixed glue solution is injected described buffer container on one side, the described raw material of continuous drawing mixes glue on one side, until reaching desired mixed glue amount; The quality that each raw material extracts is by meter metering and control.
3. supersized composite material member integral forming technique according to claim 2, it is characterized in that described vacuum defoamation step specifically is meant: after treating that mixing the mixed glue solution that obtains in the glue automatically is injected into described buffer container, to this buffer container be evacuated to continuously vacuum≤-0.098Mpa, and maintenance vacuum state 10min～20min, unload vacuum then, repeat to be evacuated down to the process 2～3 times of unloading, carry out follow-up pressure regulation buffered after leaving standstill 5min～10min at last.
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