CN1887579A - Supercritical fluid assisted RTM resin pressure injecting machine - Google Patents
Supercritical fluid assisted RTM resin pressure injecting machine Download PDFInfo
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- CN1887579A CN1887579A CN 200610108973 CN200610108973A CN1887579A CN 1887579 A CN1887579 A CN 1887579A CN 200610108973 CN200610108973 CN 200610108973 CN 200610108973 A CN200610108973 A CN 200610108973A CN 1887579 A CN1887579 A CN 1887579A
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Abstract
The supercritical fluid assisted RTM resin pressure injecting machine includes an assistant conveyer, a resin conveying circulator, a mixer, an injector and a PLC controller. It features the introduced SC-CO2 generator, and the interlinking of the high pressure gear pump for conveying resin, the assistant plunger pump, the high and low circulation converter, the supercritical fluid generator and the mixing and injecting gun under the PLC control. Being superior to available technology, the present invention has expanded RTM formed resin varieties, short forming period, high production efficiency and high product quality.
Description
Technical field
The present invention relates to processing of polymer matrix composites process equipment field, is polymer matrix composites RTM contour machining equipment field specifically.The supercritical fluid assisted RTM resin pressure injecting machine of being invented is not only applicable to the resin dedicated moulding of RTM, particularly also can make the resin dedicated energy of non-RTM RTM technological forming goods.
Background technology
In the hard-core technology field, particularly in Aero-Space, boats and ships, automobile and Military Application field, the manufacture level of polymer matrix composites has become the important symbol of a national high-tech level.In the Military Application field, advanced polymer matrix composites have begun by strategic arms to conventional weapons application, the lightweight of weapons, anti-ammunition, stealthy, heat-resisting and military development of electronic technology have all been played huge impetus, therefore, since occurring the 1950's, in short decades, the research of polymer matrix composites and application have all obtained significant progress, obtain the great attention of national governments and support energetically.But advanced composite material is when bringing a series of revolutions, but brought the raising of whole cost, so, American-European countries has proposed the notion of the composite of low-cost composite and " affording " at the application situation of polymer matrix composites in the nineties in 20th century, cooperate to have put into effect in succession ACEE (Advanced Composite Energy Efficiency) with NASA as US military, ACT (AdvancedComposite Technology), CAI plans such as (Composite Affordability Initiative), wherein the most representative is the CAI plan.Therefore, reduce polymer matrix composites manufacturing cost, improve the manufacture level of polymer matrix composites, one of main focus that the application of expanding polymer matrix composites has energetically become industry research and concern.
In the low-cost manufacturing process of polymer matrix composites, the most noticeable is the resin transfer molding technology.
Resin transfer molding (Resin Transfer Molding, be called for short RTM) be meant and in the die cavity of mould, place reinforcing material, inserts etc. in advance, behind the mold closing, the resin adhesive liquid of the uniform temperature for preparing is injected under certain pressure from the hole for injecting glue that is arranged at the appropriate location and makes it to soak into reinforcing material the mold cavity, curing then, the demoulding and obtain a kind of moulding process of goods.Its applicable scope is very wide, to industrial circles such as Aero-Space, the product of having developed has from building, traffic, telecommunication, health field: car crust and parts, RV member, screw, blades of large-scale wind driven generator, antenna house, bonnet, bathtub, shower cabinet, swimming pool plate, seat, water tank, telephone booth, electric pole, small-sized yacht etc.
RTM is a kind of advanced person's a polymer matrix composites manufacturing technology, it is one of dominant direction of polymer matrix composites manufacturing process, have the incomparable characteristics of other traditional handicraft: 1. can implementation structure and the unification of performance, and design, make integrated; 2. both the large-scale integral composite element can be made, various miniature precision composite elements can be made again; 3. need not gel coating resin and just can make the smooth goods in two sides, and can mold the complicated product of the high accuracy with excellent surface quality; 4. shaping efficiency height, the back processing of product are less and simply; 5. the mobility strong selected of mould manufacturing and material, computer easy to use shop helps design (CAD) to carry out mould and product design; 6. the equipment that does not need bulky complex just can the moulding complexity large-scale product, the small investment of equipment and mold, raw material and energy resource consumption are few; 7. the porosity of product is low, has only 0～0.2%; 8. the fiber content height of product, and reinforcing material can any direction lay, realizes press that the reasonable lay reinforcing material of goods force-bearing situation, member are easy to realize local the enhancing easily, and can make containing insert and the local member of thickening easily; 9. be closed mould operations, free from environmental pollution, do not damage workers ' health.
But because the development time of RTM technology is short, its distinctive shaping characteristic causes this technology to have certain technical difficulty again.At present, one of the domestic and international ubiquitous difficult point of RTM technology and problem are: the resin kind that can be used for RTM technology is few, far can not satisfy the requirement of RTM technology fast development.
RTM is resin dedicated both to be different from the resin that hand pasting forming is used, also be different from squeeze draw, the resin of Wrapping formed usefulness.RTM is resin dedicated should to be possessed " one long ", the characteristics of " is fast ", " two-supremes ", " four is low "." one is long " is meant that the gel time of resin is long; " one is fast " is meant the hardening time of resin fast (referring to that resin reaches the time of high exothermic peak from gelling hardening time); " two-supremes " is meant that resin should have high defoaming and high wellability; " four is low " is meant low, volatilizable part low of the viscosity of resin, cure shrinkage is low, exothermic peak is low.For present preparation high performance resin based composites resin commonly used, as epoxy resin, polyimide resin, bimaleimide resin and polybenzimidazole resin etc., because viscosity height, therefore, for the technological requirement that satisfies RTM must be carried out modification, to reduce its viscosity, improve wellability, and this will cause the decline of moulded products mechanical property to fiber.
So-called overcritical (supercritical, SC) fluid is meant that thermodynamic parameter is higher than the fluid of its critical point (critical-temperature and critical pressure), and promptly reduced temperature (ratio of actual temperature and critical-temperature) and reduced pressure (ratio of actual pressure and critical pressure) are simultaneously greater than 1 fluid.It both had been different from gas, also was different from liquid, had the characteristics of gas and liquid concurrently: density and liquid are close, thereby have very strong solvent strength; Viscosity and gas are close, thereby mobile more much better than liquid, and mass tranfer coefficient is also much bigger than liquid.In addition, performances such as the density of supercritical fluid, solvent strength and viscosity can be regulated easily by changing pressure and temperature.That is to say: supercritical fluid has good dissolution characteristics, diffusion property and chemical reaction characteristic.Near critical point, the minor variations of temperature and pressure just can make the density of supercritical fluid produce big variation, thereby the many physicochemical properties such as viscosity, specific heat capacity, dielectric constant, transmission characteristic and solvability that are associated with density are had greatly changed.
Summary of the invention
At the above-mentioned problem that in the RTM technology that prior art provided, exists, the present invention designs supercritical fluid assisted RTM resin pressure injecting machine on the basis of common RTM resin pressure injecting machine, reduce the viscosity of moulding resin by the introducing of supercritical fluid, improve its wellability, and reduce the voidage in the moulded products fiber.Thereby on the one hand full-bodied high performance resin is advantageously used in the RTM technology, enlarges the scope of RTM with resin; On the other hand, can improve the quality of RTM moulded products.
The present invention is exactly dissolution characteristics and the diffusion property that utilizes the excellence that supercritical fluid possesses, can reduce the viscosity of high viscosity, high performance resin greatly, improve its flowability, improve ability that its mold filling flows and to the dipping effect of fiber, thereby overcome of the restriction of resin kind, make the resin that is difficult to the RTM moulding can use RTM technological forming goods easily RTM technology.Because supercritical fluid is to form under the condition that is higher than critical pressure, critical-temperature, so must use high-pressure injection during injection, can also improve the speed that the resin mold filling flows so greatly, improve its shaping efficiency, shorten molding cycle.In mold filling process, because pressure reduces, supercritical fluid is overflowed with gas form and is taken away low molecular weight volatile thing in the liquid, therefore can also improve the performance of goods.
The more supercritical fluid of research has at present: CO
2, N
2, water, propane, methyl alcohol, ethene, ethane etc.CO
2Critical-temperature be 31.06 ℃, critical pressure is 7.39MPa, comparatively speaking critical condition reaches easily, and CO
2The chemical property torpescence, nontoxic, tasteless, cheap and easy to get, can be recycled, environmental protection.So the present invention preferably uses SC-CO
2Certainly, the supercritical fluid that uses other is (as overcritical N
2Perhaps supercritical water) also can reach the present invention's purpose.For example, also can use N
2, its critical-temperature is-147 ℃, critical pressure is 3.35MPa.
Therefore the present invention provides a kind of supercritical fluid assisted RTM resin pressure injecting machine, described supercritical fluid assisted RTM resin pressure injecting machine comprises auxiliary agent conveying device, resin transfer EGR, mixing arrangement, injection device and PLC (Programmable Logic Controller) control device, sees accompanying drawing 1.It is characterized in that:
This press injector also comprises supercritical fluid CO
2Generating means, described supercritical CO
2Generating means comprises the CO that connects successively
2Memory, first filter, condenser, first flow meter, high-pressure pump and constant temperature vacuum tank.
Above-mentioned supercritical fluid CO
2CO described in the generating means
2Memory is a high pressure CO
2Gas bomb.
Auxiliary agent conveying device of the present invention comprises auxiliary agent accumulator tanks, second filter, second flowmeter and first metering conveyor.
Auxiliary agent in the described auxiliary agent accumulator tanks is for making resin batching processing and forming and obtain required application performance and add chemicals in the resin matrix to smoothly, being called " additive " again.Mainly comprise: the auxiliary agent (as: antioxidant, light stabilizer, heat stabilizer, mould inhibitor and matal deactivator etc.) that improves stability; Improve the auxiliary agent (as: crosslinking agent and assistant crosslinking agent, curing agent, impact modifier, bulking agent and coupling agent etc.) of mechanical property; Improve the processing aid (as: lubricant and releasing agent, processing aid and anti-adhesive agent etc.) of processing characteristics; The auxiliary agent (as: plasticizer, blowing agent etc.) of softnessization and lighting; Change the auxiliary agent (as: antistatic additive, mould inhibitor and surface modifier etc.) of surface property; Change the auxiliary agent (as: colouring agent, fluorescent whitening agent, delustering agent and pearling agent etc.) of coloured light; Difficult burning and press down cigarette auxiliary agent (as: fire retardant, press down fumicants etc.) and other auxiliary agent (as: filler, nucleator, repellant, dispersant, fumet and photodegradable aid and biodegradation agent etc.).Described auxiliary agent can be low viscous liquid flux, also can be the high viscosity liquid auxiliary agent of diluent dilution, or through the solid-state compounding agent solution of dissolvings such as solvent.
Mixing arrangement of the present invention comprises blender, flow control valve and static mixer.Described blender is mainly used to mix supercritical carbon dioxide and auxiliary agent, and is used for storing supercritical carbon dioxide and composition thereof.
Described resin transfer EGR comprises resin accumulator tanks, electric mixer, discharge gate, the 3rd filter, second metering conveyor, high-low pressure cyclic converter and heat exchanger.Wherein said resin accumulator tanks is the common memory that is provided with electric mixer and pressure display table.
Described injection device is the hybrid injection rifle with self-cleaning function, described hybrid injection rifle at first makes fluid under high pressure atomize, then make in the slit, gap of its piston from the hybrid injection rifle and injecting cavity and flow out, realize mixed function, and under high pressure inject moulding in the die cavity that enters the excipient mould.
Described PLC control device comprises that each pressure sensor, each temperature sensor, each flow take into account the control volume of each electronic device unit.The control volume of wherein said electronic device unit is the control volume of instigating high-pressure pump, constant temperature vacuum tank, first metering conveyor, second metering conveyor, electric mixer, high-low pressure cyclic converter, heat exchanger and/or hybrid injection rifle to link according to the parameter that sets.
Description of drawings
Fig. 1 is SC-CO of the present invention
2The structural representation of an embodiment of assisted RTM resin pressure injecting machine.
The specific embodiment
Below, describe embodiment of the present invention in detail in conjunction with Fig. 1.Overcritical assisted RTM press injector of the present invention comprises supercritical fluid CO
2Generating means, auxiliary agent conveying device, resin system conveying device, mixing arrangement, injection device and PLC control device.Wherein, as shown in Figure 1, former of the present invention comprises following parts:
1.CO
2Memory;
2. first filter;
3. condenser;
4. first flow meter;
5. high-pressure pump;
6. constant temperature vacuum tank;
7. blender;
8. flow control valve;
9. auxiliary agent accumulator tanks;
10. second filter;
11. second flowmeter;
12. first metering conveyor;
13. resin accumulator tanks;
14. electric mixer;
15. discharge gate;
16. the 3rd filter;
17. second metering conveyor;
18. high-low pressure cyclic converter;
19. heat exchanger;
20. static mixer;
21. the 3rd flowmeter;
22. hybrid injection rifle;
23. three-way valve.
In one embodiment, described SC-CO
2Generating means comprises CO
2Memory 1, first filter 2, condenser 3, first flow meter 4, high-pressure pump 5.Described CO
2Memory 1 is a high pressure CO
2Gas bomb.Described CO
2The outlet of memory 1 is connected with the import of first filter 2.The outlet of described first filter 2 is connected with the import of condenser 3.Described condenser 3 is tubular heat exchangers, and carbon dioxide flows in pipe, and cooling agent flows outside pipe, with the carbon dioxide in the cooling tube.Described condenser 3 is provided with an import and an outlet, and the outlet of described condenser 3 is connected with the import of first flow meter 4.The outlet of described first flow meter 4 is connected with the import of high-pressure pump 5.Described high-pressure pump 5 can be selected from screw pump, gear pump or plunger displacement pump.Described high-pressure pump 5 is provided with an import and an outlet.The outlet of described high-pressure pump 5 links to each other with the import of constant temperature vacuum tank 6; Described constant temperature vacuum tank 6 can be jacket type structure, can feed heat medium in chuck; Described heat medium comprises superheated water, steam, deep fat.Described constant temperature vacuum tank 6 also can be single layer structure, by the outer wall heating of constant temperature vacuum tank; Mode of heating can adopt electrical heating, infrared ray heating or heating using microwave etc.The also optional usefulness of described constant temperature vacuum tank 6 has the miscellaneous equipment of high pressure heating function.Described constant temperature vacuum tank 6 has an import and an outlet, and the outlet of described constant temperature vacuum tank 6 is connected with a import in the mixing arrangement.
In one embodiment, described auxiliary agent conveying device comprises auxiliary agent accumulator tanks 9, second filter 10, second flowmeter 11, first metering conveyor 12.Described auxiliary agent accumulator tanks 9 is for being provided with the common memory of a charge door and a discharging opening.The discharging opening of described auxiliary agent memory 9 is connected with the import of second filter 10.The outlet of described second filter 10 is connected with the import of second flowmeter 11.Described second flowmeter 11 is provided with an import and an outlet, and the outlet of described second flowmeter 11 is connected with first metering conveyor 12.Described first metering conveyor 12 can be selected from screw pump, gear pump or plunger displacement pump.Because plunger displacement pump has the high advantage of measuring accuracy, so described first metering conveyor, the 12 preferred plunger displacement pumps that use.An import of the outlet of described first metering conveyor 12 and the blender of mixing arrangement 7 is connected.
In one embodiment, described mixing arrangement comprises blender 7, flow control valve 8 and static mixer 20.Described blender 7 is provided with two imports and an outlet.Import of described blender 7 and SC-CO
2Constant temperature vacuum tank 6 in the generating means is connected, and another import is connected with first metering conveyor 12 in the auxiliary agent conveying device.The outlet of described blender 7 is connected with flow control valve 8.The outlet of described flow control valve 8 is connected with static mixer 20.Described static mixing 20 is common static mixer.Described static mixer 20 also can be selected from the utensil that other has the effect of mixed high-voltage fluid.Described static mixer 20 is provided with two imports and an outlet.Two imports of described static mixer 20, one is connected with the outlet of flow control valve 8 in the mixing arrangement, and one is connected with the outlet of high-low pressure converter 18 in the resin circulating conveyor.The import of the 3rd flowmeter 21 in the outlet of described static mixer and the injection device is connected.
Supercritical CO
2The mechanism of generating means is: under the effect of high-pressure pump 5, and CO
2Entering condenser 3 by memory 1 through filter 2 becomes liquid carbon dioxide, enters high-pressure pump 5 then, and high-pressure pump 5 is source pressures of supercritical fluid, and the effect by high-pressure pump 5 can make CO in the constant temperature vacuum tank 6
2Pressure reach more than the critical pressure, the temperature and pressure of control constant temperature vacuum tank 6 makes the CO that is entered into constant temperature vacuum tank 6 by high-pressure pump 5
2Be heated to the some temperature of critical-temperature more than 31.06 ℃, pressure rises to the above some values of 7.39MPa, and supercritical carbon dioxide systems promptly forms.Supercritical carbon dioxide is entered in the blender 7, and mix with the auxiliary agent of auxiliary agent conveying device conveying in blender 7, last supercritical carbon dioxide-auxiliary agent quantitatively enters static mixer 20 through flow control valve 8.
In one embodiment, described resin transfer EGR comprises resin accumulator tanks 13, electric mixer 14, discharge gate 15, the 3rd filter 16, second metering conveyor 17, high-low pressure cyclic converter 18, heat exchanger 19.Described resin accumulator tanks 13 is for being provided with the common memory of electric mixer 14 and pressure display table.Described resin accumulator tanks 13 has a charge door and two discharging openings.Two discharging openings of described resin accumulator tanks 13, one is connected with the 3rd filter 16, and another is a discharge gate 15.The inlet of described the 3rd filter 16 is connected with resin accumulator tanks 13.The outlet of described the 3rd filter 16 is connected with the import of second metering conveyor 17.Described second metering conveyor 17 can be selected from high-pressure gear pump, plunger displacement pump or screw pump.Because high-pressure gear pump has pulse free, so advantages such as accurate measurement are described second metering conveyor, the 17 preferred high-pressure gear pumps that use.The outlet of described second metering conveyor 17 is connected with the import of high-low pressure cyclic converter 18.Described high-low pressure cyclic converter 18 is provided with an import and two outlets.Two outlets of described high-low pressure cyclic converter 18 respectively with mixing arrangement in static mixer 20 and resin circulating conveyor in the import of heat exchanger 19 be connected.Described heat exchanger 19 is a jacket type structure, can feed the heat medium heating in chuck.Heat medium comprises superheated water, steam, deep fat.The outlet of described heat exchanger 19 is connected with resin accumulator tanks 13.
In one embodiment, described injection device is made up of the 3rd flowmeter 21, hybrid injection rifle 22 and three-way valve 23.The outlet of the static mixer 20 in the import of described the 3rd flowmeter 21 and the mixing arrangement is connected.The outlet of described the 3rd flowmeter 21 is connected with the import of hybrid injection rifle 22.Described hybrid injection rifle 22 has an import and two outlets.An outlet of described hybrid injection rifle 22 is inserted into (not shown) in the injection molding when injection.Another outlet of described hybrid injection rifle 22 is connected with three-way valve 23.An interface of described three-way valve 23 is connected with drainage conduit, and two other interface is connected with heat exchanger 19 in the resin circulating conveyor with hybrid injection rifle 22 respectively.
In one embodiment, described PLC control device comprises that each pressure sensor, each temperature sensor, each flow take into account the control volume of each electronic device unit.Described pressure sensor and temperature sensor are installed on before constant temperature vacuum tank 6 in the mixing arrangement, the resin accumulator tanks 13 in the resin circulating conveyor, the hybrid injection rifle in the injection device 22 respectively and on the required connecting line.Wherein said each pressure sensor and each temperature sensor do not mark in Fig. 1 respectively particularly, those skilled in the art can according to of the present invention exemplary and nonrestrictive described embodiment and in conjunction with its specialized technical knowledge with according to the concrete required concrete installation site of determining each pressure sensor and each temperature sensor, its concrete number of installing also can be determined according to the technical solution of the present invention and in conjunction with actual required, and can change in reasonable range on the basis of technique scheme provided by the present invention.Described flowmeter is installed on each output pipe, and described flowmeter is included in that mentioned in the aforementioned schemes and marked in Fig. 1 and not shown in Figure 1, but install according to the actual conditions needs those; Those of ordinary skills can be on the basis of provided by the present invention exemplary and nonrestrictive technical scheme, in conjunction with its specialized technical knowledge, according to the concrete installation site and the installation number of required each flowmeter of arrangement of reality.For example, in the embodiment of a variation, for the purpose that improves measurement and control accuracy, can be required according to reality, under the prerequisite of the operational effect of not negative effect overcritical assisted RTM press injector of the present invention, in proper range, increase above-mentioned pressure sensor, the installation number of temperature sensor and/or flowmeter, fixing or the on-fixed distance of for example whenever being separated by according to design on the longer pipe line is with regard to pressure sensor of design and installation and/or the temperature sensor working condition with the monitoring pipeline, for example is used to monitor have or not leak and situation that other causes pressure and/or temperature fluctuation occurs.Perhaps for example, in the embodiment of another variation, for cost control, thereby determining not by actual detected and contrast test that significantly those skilled in the art can be according to the required installation number that suitably reduces described pressure sensor, temperature sensor and/or flowmeter of reality on the basis of negative effect overcritical assisted RTM press injector operational effect of the present invention.For example, under guaranteeing that described RTM press injector can the prerequisite of stable operation, one or morely be positioned at each output pipe and flowmeter not shown in Figure 1 according to required optionally minimizing of reality; Or selectively reduce aforesaid pressure and/or the temperature sensor that is used for monitoring pressure on the pipeline and/or temperature fluctuation.The control volume of described electronic device unit is the control volume of instigating constant temperature vacuum tank 6, high-pressure pump 5, first metering conveyor 12, second metering conveyor 17, electric mixer 14, high-low pressure cyclic converter 18, heat exchanger 19, hybrid injection rifle 22 to link according to the parameter that sets.
The course of work of supercritical fluid assisted RTM resin pressure injecting machine of the present invention is: configure parameters such as pressure, temperature, flow on the PLC control device, second metering conveyor 17 in the resin transfer circulating system at first makes resin be flowed out by the outlet of resin accumulator tanks 13, through the 3rd filter 16, second metering conveyor 17, high-low pressure cyclic converter 18, by heat exchanger 19 heating, flow back at last in the resin accumulator tanks 13.This circulation is to handle in order to make resin under low pressure carry out heated at constant temperature, so that the resin in the resin accumulator tanks 13 reaches the temperature of setting.After reaching the temperature that sets when resin, resin low pressure recycle in the resin transfer EGR stops, the mouth that high-low pressure cyclic converter 18 links to each other with heat exchanger 19 sealing automatically, what link to each other with static mixer 20 in the mixing arrangement mouthful opens automatically, and the resin that has reached design temperature enters in the static mixer 20 under the pressure that sets.Meanwhile, the auxiliary agent in the auxiliary agent accumulator tanks 9 flows in the blender 7 according to the amount that sets through second filter 10, second flowmeter 11, first metering conveyor 12, and is synchronous therewith, CO
2Under pressure by CO
2Form with supercritical fluid under the temperature of memory 1 through setting behind first filter 2, condenser 3, first flow meter 4, the high-pressure pump 5, the pressure flows in the blender 7.Auxiliary agent in the injecting mixer 7 and SC-CO
2The preliminary mixing after constant temperature voltage-stablizer 6 and flow control valve 8 flow in the static mixer 20 with flow, the pressure and temperature of setting.Enter resin and SC-CO in the static mixer 20
2-auxiliary agent carries out the second time to be mixed.The fluid that comes out from static mixer 20 enters into hybrid injection rifle 22 through the 3rd flowmeter 21 to be mixed for the third time, and is injected in the mould through filling gun, obtains the moulded products of mould institute figuration shape.
Claims (16)
1. supercritical fluid assisted resin transfer modling pressure injection machine, described resin transfer moulding press injector comprises auxiliary agent conveying device, resin transfer EGR, mixing arrangement, injection device and PLC control device, it is characterized in that: this press injector also comprises supercritical CO
2Generating means.
2. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1 is characterized in that: described supercritical CO
2Generating means comprises the CO that connects successively
2Memory (1), first filter (2), condenser (3), first flow meter (4), high-pressure pump (5), constant temperature vacuum tank (6).
3. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 2 is characterized in that:
Described CO
2Memory (1) is a high pressure CO
2Gas bomb;
Described CO
2The outlet of memory (1) is connected with the import of first filter (2), the outlet of described first filter (2) is connected with the import of condenser (3), the outlet of described condenser (3) is connected with the import of first flow meter (4), the outlet of described first flow meter (4) is connected with the import of high-pressure pump (5), the outlet of described high-pressure pump (5) links to each other with the import of constant temperature vacuum tank (6), and the outlet of described constant temperature vacuum tank (6) is connected with a import in the mixing arrangement.
4. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1, it is characterized in that: described auxiliary agent conveying device comprises auxiliary agent accumulator tanks (9), second filter (10), second flowmeter (11) and first metering conveyor (12).
5. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 4 is characterized in that, contains in the described auxiliary agent accumulator tanks (9) to be selected from least a in the following auxiliary agent:
Improve the auxiliary agent of stability;
Improve the auxiliary agent of mechanical property;
Improve the auxiliary agent of processing characteristics;
The auxiliary agent of softnessization and lighting;
Change the auxiliary agent of surface property;
Change the auxiliary agent of coloured light;
Difficult burning and press down the cigarette auxiliary agent; Or
Other auxiliary agent.
6. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 5 is characterized in that:
The described auxiliary agent that improves stability comprises antioxidant, light stabilizer, heat stabilizer, mould inhibitor and matal deactivator;
The described auxiliary agent that improves mechanical property comprises crosslinking agent, assistant crosslinking agent, curing agent, impact modifier, bulking agent and coupling agent;
The described auxiliary agent that improves processing characteristics comprises lubricant, releasing agent, processing aid and anti-adhesive agent;
Described softnessization comprises plasticizer and blowing agent with the auxiliary agent of lighting;
The auxiliary agent of described change surface property comprises antistatic additive, mould inhibitor and surface modifier;
The auxiliary agent of described change coloured light comprises colouring agent, fluorescent whitening agent, delustering agent and pearling agent;
Described difficult burning and press down the cigarette auxiliary agent and comprise fire retardant and press down fumicants;
Described other auxiliary agent comprises filler, nucleator, repellant, dispersant, fumet, photodegradable aid and biodegradation agent.
7. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1, it is characterized in that: described mixing arrangement comprises blender (7), flow control valve (8) and static mixer (20).
8. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 7 is characterized in that:
Described blender (7) is provided with two imports and an outlet; Import of described blender (7) and supercritical CO
2Constant temperature vacuum tank (6) in the generating means is connected, and another import is connected with the auxiliary agent conveying device; The outlet of described blender (7) is connected with flow control valve (8); The outlet of described flow control valve (8) is connected with static mixer (20); Described static mixer (20) is provided with two imports and an outlet; Two imports of described static mixer (20), one is connected with the outlet of flow control valve (8) in the mixing arrangement, and one is connected with a outlet in the resin circulating conveyor; The outlet of described static mixer is connected with a import in the injection device.
9. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1, it is characterized in that: described resin transfer EGR can be realized the high and low pressure cyclic transformation of uniform temperature resin automatically.
10. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1, it is characterized in that: described resin transfer EGR comprises resin accumulator tanks (13), electric mixer (14), discharge gate (15), the 3rd filter (16), second metering conveyor (17), high-low pressure cyclic converter (18), heat exchanger (19).
11. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 10 is characterized in that:
Described resin accumulator tanks (13) is for being provided with the common memory of electric mixer (14) and pressure display table;
Two discharging openings of described resin accumulator tanks (13), one is connected with the 3rd filter (16), and another is discharge gate (15); The outlet of described the 3rd filter (16) is connected with the import of second metering conveyor (17); The outlet of described second metering conveyor (17) is connected with the import of high-low pressure cyclic converter (18); Described high-low pressure cyclic converter (18) is provided with an import and two outlets, two outlets of described high-low pressure cyclic converter (18) respectively with mixing arrangement in static mixer (20) and resin circulating conveyor in the import of heat exchanger (19) be connected; Described heat exchanger (19) is a jacket type structure, can feed the heat medium heating in chuck; The outlet of described heat exchanger (19) is connected with resin accumulator tanks (13).
12. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 11, it is characterized in that: heat medium comprises superheated water, steam, deep fat.
13. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1 is characterized in that: described injection device is the hybrid injection rifle (22) with self-cleaning function.
14. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 13 is characterized in that:
Described hybrid injection rifle (22) has an import and two outlets, the import of described hybrid injection rifle (22) is connected with the outlet of static mixer (20), one of two of described hybrid injection rifle (22) outlet is connected with the excipient mould, and another is connected with three-way valve (23) in the resin transfer EGR; The import of described three-way valve 23 is connected with an outlet of hybrid injection rifle 22, and one of the outlet of described three-way valve 23 is connected with heat exchanger 19, gets rid of the mixture that adds auxiliary agent as discharge gate for one.
15. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 1 is characterized in that: described PLC control device comprises that each pressure sensor, each temperature sensor, each flow take into account the control volume of each electronic device unit.
16. supercritical fluid assisted resin transfer modling pressure injection machine as claimed in claim 15 is characterized in that: described pressure sensor and temperature sensor are installed on hybrid injection rifle (22) in constant temperature vacuum tank (6) in the mixing arrangement, the resin accumulator tanks (13) in the resin circulating conveyor, heat exchanger (19), the injection device respectively before and on other required connecting line.
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|---|---|---|---|
| CNB2006101089732A CN100572037C (en) | 2006-07-31 | 2006-07-31 | Supercritical fluid assisted RTM resin pressure injecting machine |
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|---|---|---|---|
| CNB2006101089732A CN100572037C (en) | 2006-07-31 | 2006-07-31 | Supercritical fluid assisted RTM resin pressure injecting machine |
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| CN100572037C CN100572037C (en) | 2009-12-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501985A (en) * | 2011-05-06 | 2014-01-08 | 斯奈克玛 | Process for injection moulding a composite part |
| CN105108929A (en) * | 2010-04-13 | 2015-12-02 | 汉高知识产权控股有限责任公司 | Curable compositions, processes for using such compositions to prepare composites and processes for preparing composites having superior surface finish and high fiber consolidation |
| CN108954010A (en) * | 2018-09-17 | 2018-12-07 | 中国核动力研究设计院 | A kind of supercritical carbon dioxide stable-pressure device of water-cooled heterogeneous gas pressure stabilizing |
| JP2019077099A (en) * | 2017-10-24 | 2019-05-23 | トヨタ自動車東日本株式会社 | Method of producing resin molded product in which fiber structure is embedded and resin molded product |
-
2006
- 2006-07-31 CN CNB2006101089732A patent/CN100572037C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108929A (en) * | 2010-04-13 | 2015-12-02 | 汉高知识产权控股有限责任公司 | Curable compositions, processes for using such compositions to prepare composites and processes for preparing composites having superior surface finish and high fiber consolidation |
| CN103501985A (en) * | 2011-05-06 | 2014-01-08 | 斯奈克玛 | Process for injection moulding a composite part |
| CN103501985B (en) * | 2011-05-06 | 2016-08-17 | 斯奈克玛 | A kind of method of injection molding composite material component |
| JP2019077099A (en) * | 2017-10-24 | 2019-05-23 | トヨタ自動車東日本株式会社 | Method of producing resin molded product in which fiber structure is embedded and resin molded product |
| CN108954010A (en) * | 2018-09-17 | 2018-12-07 | 中国核动力研究设计院 | A kind of supercritical carbon dioxide stable-pressure device of water-cooled heterogeneous gas pressure stabilizing |
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| Publication number | Publication date |
|---|---|
| CN100572037C (en) | 2009-12-23 |
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