CN102514132B - Method for manufacturing shape memory polymer core mold by winding composite material component - Google Patents
Method for manufacturing shape memory polymer core mold by winding composite material component Download PDFInfo
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- CN102514132B CN102514132B CN 201110448553 CN201110448553A CN102514132B CN 102514132 B CN102514132 B CN 102514132B CN 201110448553 CN201110448553 CN 201110448553 CN 201110448553 A CN201110448553 A CN 201110448553A CN 102514132 B CN102514132 B CN 102514132B
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- epoxy resin
- hydrogenated epoxy
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- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 229920000431 shape-memory polymer Polymers 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000003822 epoxy resin Substances 0.000 claims abstract description 79
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000000071 blow moulding Methods 0.000 claims abstract description 14
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 10
- HSDVRWZKEDRBAG-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)hexoxymethyl]oxirane Chemical compound C1OC1COC(CCCCC)OCC1CO1 HSDVRWZKEDRBAG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001291 vacuum drying Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000008901 benefit Effects 0.000 abstract description 11
- 238000007493 shaping process Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 116
- 238000005516 engineering process Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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Abstract
The invention discloses a method for manufacturing a shape memory polymer core mold by winding a composite material component. The method comprises the following steps of: 1, uniformly mixing hydrogenated epoxy resin, hexanediol diglycidyl ether and maleic anhydride according to the molar ratio of 0.5-1.0:0-0.4:2.0, and adding the mixture into a vacuum drying box to remove bubbles to obtain a hydrogenated epoxy resin system; 2, casting the hydrogenated epoxy resin system into a cylindrical mold, placing the cast mold in an oven to be cured, after cooling the mold to room temperature, demolding to obtain a hydrogenated epoxy resin blank; and 3, selecting a core mold shaping mold according to the shape of the required core mold, assembling the hydrogenated epoxy resin blank and the core mold shaping mold, deforming the hydrogenated epoxy resin blank into the shape of the core mold through a blow-moulding process, and cooling the hydrogenated epoxy resin blank to obtain the shape memory polymer core mold. The shape memory polymer core mold manufactured by the method is low in cost, high in efficiency and short in manufacturing period, can be repeatedly used and has obvious economic benefit; and demolding is convenient to perform.
Description
Technical field
The invention belongs to the core manufacture technology field, be specifically related to a kind of preparation method of shape memory polymer core mold by winding composite material component.
Background technology
The fiber winding forming technology refers to continuous fiber under certain tension force effect, be wound on core according to certain rule, then the technology of curing molding after the impregnating resin glue.Divide dry method, wet method and three kinds of winding forms of semidry method.Be applicable to make cylinder, cylinder, spheroid and some positive camber revolving body goods.This forming technique has that fiber content is high, fibre strength is bringd into play, the Filament-wound Machine direction can change and is fit to the advantage such as production in enormous quantities, has a wide range of applications in Aero-Space and civil area.
Wrapping formed dimensional accuracy, inner surface quality, cost and the production cycle that directly affects product with core of composite element.The Wrapping formed technology of present domestic composite element adopts metal core, water-soluble core mould and metallic framework external application gypsic horizon combined type core die mostly.The advantage of combined type core die is that skeleton can reuse, but its complex structure, dismounting or gypsic horizon striking all need manual operations, and mechanization degree is low, and gypsic horizon is highly brittle simultaneously, easily ftractures, and the core yield rate is not high.Water-soluble core mould is to remove than being easier to from composite product with respect to the great advantage of metallic combination core, the key of the water-soluble core mould development of restriction but core weight is excessive always, and its manufacturing process mostly belongs to manually-operated, and efficient is very low, has also restricted its development.Metal core cost is high, weight large and be unfavorable for the molding component that draw ratio is larger, makes its range of application also greatly limited.
Along with improving constantly of composite application requirements, the Wrapping formed integral rigidity to core material and core of composite element, axiality and assembling, dismounting etc. require more and more higher, and existing core cost is high, structure heavy stupid, weight is large, the assembling of core, dismounting and distortion all can't be satisfied further developing of Filament Wound Composite technology, therefore carry out the investigation of materials of light high-stiffness core necessary.The continuous expansion of composite range of application simultaneously, demand continues to increase, and requires its rapid batch production, and this application study to easy-formation, the easily demoulding, lightweight, low-cost core material has proposed active demand.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of shape memory polymer core mold by winding composite material component for above-mentioned the deficiencies in the prior art.The method adopts shape-memory polymer to make the Filament Wound Composite component core model, can realize the rapid shaping of core, the core of making is changed between elasticity and rigidity by shape-memory polymer, easily realize form removal, and reach reusable purpose, finally realize quick, efficient, the low cost fabrication of composite products, and then promote applying and updating of advanced material technology.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of shape memory polymer core mold by winding composite material component, it is characterized in that, and the method comprises the following steps:
Step 3, making core: select the mandrel molding mould according to the shape of required core, with the blank of hydrogenated epoxy resin described in step 2 and the assembling of mandrel molding mould, adopting the hydrogenated epoxy resin blank after blow molding process will be assembled is 90 ℃～140 ℃ in temperature, pressure is pressurize 10min～20min under the condition of 0.2MPa～0.6MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, the cooling rear demoulding obtains the shape-memory polymer core.
The mol ratio of hydrogenated epoxy resin, hexanediol diglycidyl ether and maleic anhydride described in above-mentioned steps one is 0.6～0.9: 0.1～0.3: 2.0.
The system of solidifying described in above-mentioned steps two is: be to solidify 2h～4h under the condition of 60 ℃～80 ℃ in temperature, then solidify 2h～4h under temperature is the condition of 110 ℃～130 ℃, solidify 0.5h～1.5h at last under temperature is the condition of 150 ℃～180 ℃.
Mandrel molding mould described in above-mentioned steps three adopts the form of distinguish former, and the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make.
Mode cooling described in above-mentioned steps three perhaps adopts running water cooling after adopting nitrogen to brush for adopting nitrogen brush or adopt running water cooling again.
Hydrogenated epoxy resin system cast of the present invention cylindric mould used is bolted to connection by cylindric formpiston and cylindric former and forms.
The using method of shape-memory polymer core of the present invention is: according to conventional method, Filament Wound Composite is prepared composite element to the shape-memory polymer core, then more than the shape-memory polymer core being heated to the glass transition temperature of hydrogenated epoxy resin system, the core shape can return back to initial cylindric, at last the core of the recovery of shape opening part from composite element is taken out.
The present invention compared with prior art has the following advantages:
1, the present invention adopts shape-memory polymer to make the Filament Wound Composite component core model, can realize the rapid shaping of core, the core of making is changed between elasticity and rigidity by shape-memory polymer, easily realize form removal, and reach reusable purpose, finally realize quick, efficient, the low cost fabrication of composite products, and then promote applying and updating of advanced material technology.
2, the shape-memory polymer core quality that adopts the inventive method to make is light, and proportion is about 1/7 of metal core proportion less than 1.2,1/3 of core mould proportion.
3, the shape-memory polymer core mold structure that adopts the inventive method to make is simple, adopts the blow molding process global formation, has avoided the larger man-made assembly of workload and dismounting operation.
4, the shape-memory polymer core cost of the present invention's making is low, and efficient is high, and is reusable, and fabrication cycle is short, is convenient in demoulding, and has obvious economic benefit.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the cylindric mould that adopts of the present invention.
Fig. 2 is the structural representation of the mandrel molding mould of the first specific embodiment employing of the present invention.
Fig. 3 is the structural representation of the mandrel molding mould of the second specific embodiment employing of the present invention.
Description of reference numerals:
1-formpiston; 2-former; 3-end socket former;
4-cylinder section die; 5-upper former; 6-lower former.
The specific embodiment
Be used for the preparation of the Wrapping formed shape-memory polymer core of composite material pressure container:
step 3, make core: select the mandrel molding mould according to the shape of required core, as shown in Figure 2, this mandrel molding mould is comprised of end socket former 3 and cylinder section die 4, the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make, with the blank of hydrogenated epoxy resin described in step 2 and end socket former 3 and 4 assemblings of cylinder section die, then the hydrogenated epoxy resin blank after adopting blow molding process to assemble is 140 ℃ in temperature, pressure is pressurize 10min under the condition of 0.5MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, then adopt nitrogen to brush the hydrogenated epoxy resin blank after pressurize to be placed in running water cooling fast, finally demould obtains for the Wrapping formed shape-memory polymer core of composite material pressure container.
The present embodiment adopts the blow molding process global formation, the larger man-made assembly of workload and dismounting operation have been avoided, the shape-memory polymer core mold structure of making is simple, quality is light, proportion is about 1/7 of metal core proportion less than 1.2,1/3 of core mould proportion, and core is reusable, has obvious economic benefit.
The shape-memory polymer core that adopts the present embodiment to make prepares composite material pressure container, according to conventional method, Filament Wound Composite is prepared composite material pressure container to the shape-memory polymer core, then the shape-memory polymer core is heated to 140 ℃, the core shape can return back to initial cylindric, at last the core of the recovery of shape opening part from composite material pressure container is taken out.
Be used for the preparation of the Wrapping formed shape-memory polymer core of composite pipe:
step 3, make core: select the mandrel molding mould according to the shape of required core, as shown in Figure 3, this mandrel molding mould is comprised of upper former 5 and lower former 6, the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make, with the blank of hydrogenated epoxy resin described in step 2 and upper former 5 and 6 assemblings of lower former, then the hydrogenated epoxy resin blank after adopting blow molding process to assemble is 100 ℃ in temperature, pressure is pressurize 10min under the condition of 0.4MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, then the hydrogenated epoxy resin blank after pressurize is placed in running water cooling fast, finally demould obtains for the Wrapping formed shape-memory polymer core of composite pipe.
The present embodiment adopts the blow molding process global formation, the larger man-made assembly of workload and dismounting operation have been avoided, the shape-memory polymer core mold structure of making is simple, quality is light, proportion is about 1/7 of metal core proportion less than 1.2,1/3 of core mould proportion, and core is reusable, has obvious economic benefit.
The shape-memory polymer core that adopts the present embodiment to make prepares composite pipe, according to conventional method, Filament Wound Composite is prepared composite pipe to the shape-memory polymer core, then the shape-memory polymer core is heated to 110 ℃, the core shape can return back to initial cylindric, at last the core of the recovery of shape opening part from composite pipe is taken out.
Embodiment 3
Be used for the preparation of the Wrapping formed shape-memory polymer core of composite material pressure container:
step 3, make core: adopt the mandrel molding mould identical with embodiment 1, the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make, with the blank of hydrogenated epoxy resin described in step 2 and end socket former 3 and 4 assemblings of cylinder section die, then the hydrogenated epoxy resin blank after adopting blow molding process to assemble is 120 ℃ in temperature, pressure is pressurize 20min under the condition of 0.6MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, then adopt nitrogen to brush cooling fast the hydrogenated epoxy resin blank after pressurize, finally demould obtains for the Wrapping formed shape-memory polymer core of composite material pressure container.
The present embodiment adopts the blow molding process global formation, the larger man-made assembly of workload and dismounting operation have been avoided, the shape-memory polymer core mold structure of making is simple, quality is light, proportion is about 1/7 of metal core proportion less than 1.2,1/3 of core mould proportion, and core is reusable, has obvious economic benefit.
The shape-memory polymer core that adopts the present embodiment to make prepares composite material pressure container, according to conventional method, Filament Wound Composite is prepared composite material pressure container to the shape-memory polymer core, then the shape-memory polymer core is heated to 130 ℃, the core shape can return back to initial cylindric, at last the core of the recovery of shape opening part from composite material pressure container is taken out.
Be used for the preparation of the Wrapping formed shape-memory polymer core of composite pipe:
step 3, make core: adopt the mandrel molding mould identical with embodiment 2, the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make, with the blank of hydrogenated epoxy resin described in step 2 and upper former 5 and 6 assemblings of lower former, then the hydrogenated epoxy resin blank after adopting blow molding process to assemble is 90 ℃ in temperature, pressure is pressurize 15min under the condition of 0.2MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, then adopt nitrogen to brush the hydrogenated epoxy resin blank after pressurize to be placed in running water cooling fast, finally demould obtains for the Wrapping formed shape-memory polymer core of composite pipe.
The present embodiment adopts the blow molding process global formation, the larger man-made assembly of workload and dismounting operation have been avoided, the shape-memory polymer core mold structure of making is simple, quality is light, proportion is about 1/7 of metal core proportion less than 1.2,1/3 of core mould proportion, and core is reusable, has obvious economic benefit.
The shape-memory polymer core that adopts the present embodiment to make prepares composite pipe, according to conventional method, Filament Wound Composite is prepared composite pipe to the shape-memory polymer core, then the shape-memory polymer core is heated to 100 ℃, the core shape can return back to initial cylindric, at last the core of the recovery of shape opening part from composite pipe is taken out.
Be used for the preparation of the Wrapping formed shape-memory polymer core of composite pipe:
step 3, make core: adopt the mandrel molding mould identical with embodiment 2, the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make, with the blank of hydrogenated epoxy resin described in step 2 and upper former 5 and 6 assemblings of lower former, then the hydrogenated epoxy resin blank after adopting blow molding process to assemble is 110 ℃ in temperature, pressure is pressurize 10min under the condition of 0.3MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, then adopt nitrogen to brush the hydrogenated epoxy resin blank after pressurize to be placed in running water cooling fast, finally demould obtains for the Wrapping formed shape-memory polymer core of composite pipe.
The present embodiment adopts the blow molding process global formation, the larger man-made assembly of workload and dismounting operation have been avoided, the shape-memory polymer core mold structure of making is simple, quality is light, proportion is about 1/7 of metal core proportion less than 1.2,1/3 of core mould proportion, and core is reusable, has obvious economic benefit.
The shape-memory polymer core that adopts the present embodiment to make prepares composite pipe, according to conventional method, Filament Wound Composite is prepared composite pipe to the shape-memory polymer core, then the shape-memory polymer core is heated to 120 ℃, the core shape can return back to initial cylindric, at last the core of the recovery of shape opening part from composite pipe is taken out.
The above; it is only preferred embodiment of the present invention; be not that the present invention is done any restriction, every any simple modification, change and equivalent structure of above embodiment being done according to the invention technical spirit changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (5)
1. the preparation method of a shape memory polymer core mold by winding composite material component, is characterized in that, the method comprises the following steps:
Step 1, preparation hydrogenated epoxy resin system: with hydrogenated epoxy resin, hexanediol diglycidyl ether and maleic anhydride by 0.5～1.0: put into vacuum drying chamber after 0～0.4: 2.0 mixed in molar ratio is even, be to remove bubble 5min～15min under the condition of 50 ℃～60 ℃ in temperature, obtain the hydrogenated epoxy resin system;
Step 2, make the hydrogenated epoxy resin blank: the system of hydrogenated epoxy resin described in step 1 is poured into cylindric mould, and the mould after then pouring into a mould is placed in baking oven and solidifies, be cooled to room temperature after the demoulding obtain the hydrogenated epoxy resin blank;
Step 3, making core: select the mandrel molding mould according to the shape of required core, with the blank of hydrogenated epoxy resin described in step 2 and the assembling of mandrel molding mould, adopting the hydrogenated epoxy resin blank after blow molding process will be assembled is 90 ℃～140 ℃ in temperature, pressure is pressurize 10min～20min under the condition of 0.2MPa～0.6MPa, make the hydrogenated epoxy resin blank be deformed into the core shape, the cooling rear demoulding obtains the shape-memory polymer core.
2. the preparation method of shape memory polymer core mold by winding composite material component according to claim 1, it is characterized in that, the mol ratio of hydrogenated epoxy resin described in step 1, hexanediol diglycidyl ether and maleic anhydride is 0.6～0.9: 0.1～0.3: 2.0.
3. the preparation method of shape memory polymer core mold by winding composite material component according to claim 1, it is characterized in that, the system of solidifying described in step 2 is: be to solidify 2h～4h under the condition of 60 ℃～80 ℃ in temperature, then solidify 2h～4h under temperature is the condition of 110 ℃～130 ℃, solidify 0.5h～1.5h at last under temperature is the condition of 150 ℃～180 ℃.
4. the preparation method of shape memory polymer core mold by winding composite material component according to claim 1, it is characterized in that, the mould of mandrel molding described in step 3 adopts the form of distinguish former, and the shape of mandrel molding mould inner surface is identical with the core external surface shape that will make.
5. the preparation method of shape memory polymer core mold by winding composite material component according to claim 1, it is characterized in that, mode cooling described in step 3 perhaps adopts running water cooling after adopting nitrogen to brush for adopting nitrogen to brush cooling or adopting running water cooling again.
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| CN110216844B (en) * | 2019-07-22 | 2021-06-18 | 哈尔滨工业大学 | Mould of flexible pipeline |
| CN112008920A (en) * | 2020-07-31 | 2020-12-01 | 湖北三江航天江北机械工程有限公司 | Core mold for producing rocket engine composite material shell and forming method thereof |
| CN112571822B (en) * | 2020-10-29 | 2023-03-28 | 上海新力动力设备研究所 | Memory non-metal core mold structure suitable for winding with medicine and shell forming method |
| CN112452369B (en) * | 2020-11-24 | 2022-03-01 | 东南大学 | Magnetic control thermoplastic shape memory polymer wrapped heating platform and method |
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| US5189110A (en) * | 1988-12-23 | 1993-02-23 | Asahi Kasei Kogyo Kabushiki Kaisha | Shape memory polymer resin, composition and the shape memorizing molded product thereof |
| JP2889708B2 (en) * | 1990-12-25 | 1999-05-10 | 株式会社東芝 | Resin casting machine |
| CN100337514C (en) * | 2003-06-23 | 2007-09-12 | 上海克林技术开发有限公司 | Epoxy cast technology for high tension coil of electron accelerator |
| US8356727B2 (en) * | 2007-03-07 | 2013-01-22 | Cornerstone Research Group, Inc. | Venting mechanisms for containers |
| CN101100545B (en) * | 2007-06-29 | 2010-08-04 | 哈尔滨工业大学 | Shape memory epoxy resin system |
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