CN103317628A - Preparation methods for soluble core mould and nonmetal-lining or no-lining fibre winding container - Google Patents
Preparation methods for soluble core mould and nonmetal-lining or no-lining fibre winding container Download PDFInfo
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- CN103317628A CN103317628A CN2013100401159A CN201310040115A CN103317628A CN 103317628 A CN103317628 A CN 103317628A CN 2013100401159 A CN2013100401159 A CN 2013100401159A CN 201310040115 A CN201310040115 A CN 201310040115A CN 103317628 A CN103317628 A CN 103317628A
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Abstract
A preparation method of a solube core mold comprises: blank moulding of a mortar mould: a) the ingredients of the mortar die consists of quartz sand, polyvinyl alcohol and water with a weight ratio of 100:1-2:6; b) the inner sleeve of the mortar mould is sleeved in a moulding mould, then adding the uniformly stirred ingredients of the mortar mould into the moulding mould until the moulding mould is full; c) demoulding; and d) solidifying; and a mandrel is penetrated in the mortar mould, the mandrel and the mortar mould are fixed in a circumferential direction by using the inner sleeve of the mortar mould and fixed in an axial direction by using a locking ring. A preparation method of a nonmetal-lining or no-lining fibre winding container comprises: infiltrating a fibre reinforced material in a resin solution, winding the fibre reinforced material on the soluble core mould in a circumferential direction and in a longitudinal direction by using a winder, solidifying, washing with water and demoulding. By using the container, demoulding can be finished by water washing. The soluble core mould is especially suitable for preparing composite material containers with a complex-shape internal profile as well as hard to demould, is low in cost and reusable in raw materials.
Description
Technical field
The present invention relates to field of compound material, be specifically related to a kind of preparation method of solubility core and make non-metallic inner liner as winding mandrel or without the preparation method of liner fiber winding container with it.
Background technology
The filament wound composite container has the advantages such as specific strength is high, designability is strong, can twine rule according to the stress design of product, gives full play to the performance of fiber high specific strength and high ratio modulus.The mould of using when core is Filament-wound Machine, the size and dimension of core have also determined the interior profile of Wound.Wherein the container of metal inner lining such as gas cylinder, is directly to twine housing on metal inner lining.Metal inner lining is made core and is directly used, and metal inner lining has played the effect of winding mandrel in this case, has played again bubble-tight effect, can bear local inner pressuring load simultaneously.
Some fiber winding containers do not need liner, or adopt rubber or hand to stick with paste fiberglass as the liner of container, need in this case to design first a kind of have certain size and shape, and the core of the mould that can bear Fiber Winding Tension when twining, again core is removed to finish at last moulding process.
Often adopt metal core, wooden model, plaster mold etc. without liner or non-metallic inner liner container, metal core cost is high, weight is large, and be not suitable for making profile in some complex-shaped, be difficult for the demoulding or opening size less than the product internal diameter can't demoulding product.Wooden model, plaster mold cost are low, though can remedy these deficiencies, demoulding difficulty, and the not reproducible use of raw material.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide solubility core and non-metallic inner liner or without the preparation method of liner fiber winding container, the method by washing after container formation is finished gets final product the demoulding.The solubility core be particularly useful for making interior profile complex-shaped, be difficult for the demoulding or opening size less than the composite material vessel of product internal diameter, and cost is low, raw material is reusable.
The preparation method of solubility core of the present invention is characterized in that, may further comprise the steps:
Step 1, the 2 blank moulding of mortar mould:
A) mortar mould 2 batchings: mortar mould batching is comprised of quartz sand, polyethylene alcohol and water; Quartz sand: polyvinyl alcohol: the weight proportion of water is 100: 1～2: 6;
B) mortar mould 2 blank moulding: mortar mould inner sleeve 3 is sleeved in the mould, then mortar mould 2 batchings that stir is added in the mould, until fill;
C) mortar mould 2 demouldings:
D) mortar mould 2 solidifies: the mortar mould 2 after the demoulding is solidified;
Step 2, the assembling of solubility core: mandrel 1 penetrates in the mortar mould 2, utilizes mortar mould inner sleeve 3 circumferentially fixing mandrel 1, mortar mould 2, then carries out axial restraint with retaining ring 4.
Further, the solidification temperature in the described step 1 is 100～160 ℃.Preferably, the solidification temperature in the described step 1 is 120～140 ℃.
Further, described mortar mould 2 is prepared burden first polyvinyl alcohol to be mixed with water and is made into poly-vinyl alcohol solution, then mixes with quartz sand.
Further, described mortar mould 2 is symmetrical revolving body, and its profile and size are guaranteed by mould or mortar mould blank is come moulding by machined.
Further, the outer surface that also is included in after step 2 solubility core is assembled is made inner liner.
Non-metallic inner liner of the present invention or without the preparation method of liner fiber winding container is characterized in that may further comprise the steps:
Step 1, make the solubility core according to the method for claim 1; If make without the liner fiber winding container, core is without the liner core; If make the non-metallic inner liner container, core is the core that inner liner is arranged; Step 2, Filament-wound Machine: fibre reinforced materials is infiltrated in the resin adhesive liquid, by wrapping machine according to program on core, according to certain laying order, carry out hoop and longitudinally winding; Step 3, curing: step 4, the washing demoulding:
Further, described solidification temperature is below 160 ℃.
Further, described washing demoulding water temperature is controlled at 60～80 ℃.
The solubility core is characterized in that comprising mandrel 1, mortar mould 2, mortar mould inner sleeve 3, retaining ring 4, and mortar mould 2 is fixed on the mandrel 1 by mortar mould inner sleeve 3, and by retaining ring 4 lockings; Mortar mould 2 consists of quartz sand by quartz sand and polyvinyl alcohol, water: polyvinyl alcohol: the weight proportion of water is 100: 1～2: 6.
Because the present invention has taked above technical scheme, has following advantage:
(1) the present invention adopts quartz sand to make core, and cost is low, and raw material can reuse;
(2) the present invention be fit to make profile in some complex-shaped, be difficult for the demoulding or opening size less than the composite material vessel of product internal diameter;
(3) the present invention utilizes water to get final product the demoulding, and stripping means is simple.
Description of drawings
Fig. 1 is the overall structure schematic diagram of solubility core of the present invention.
Fig. 2 is the profile schematic diagram of solubility core of the present invention.
Fig. 3 is the process chart of solubility core blank of the present invention moulding.
Fig. 4 utilizes the solubility core to make non-metallic inner liner or without the process chart of liner fiber winding container.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described in detail
Consult Fig. 1, solubility core of the present invention comprises mandrel 1, mortar mould 2, mortar mould inner sleeve 3, retaining ring 4, and mortar mould 2 is fixed on the mandrel 1 by mortar mould inner sleeve 3, and by retaining ring 4 lockings.Core when the solubility core is Filament-wound Machine, it can carry out the demoulding by the method for washing after the composite material vessel moulding is finished.Described mandrel 1, mortar mould inner sleeve 3 and retaining ring 4 are made of metal material.Mortar mould 2 is made of quartz sand and polyvinyl alcohol, and profile is generally symmetrical revolving body, as shown in Figure 2, can be the revolving bodies such as sphere, cylindrical, taper, conforms to the interior profile of fiber winding container.
One, the preparation method of solubility core of the present invention, as shown in Figure 3:
Step 1, the 2 blank moulding of mortar mould:
1, mortar mould 2 batchings: mortar mould batching is mixed according to a certain ratio by quartz sand, polyvinyl alcohol (PVA) and water and forms.Through test, we find following rule: 1. with quartz sand with to add the water effect after PVA mixes undesirable, so should first polyvinyl alcohol be mixed with water and being made into poly-vinyl alcohol solution, and then it is mixed by certain proportioning and quartz sand; Quartz sand: polyvinyl alcohol: the weight proportion of water is 100: (1～2): 6 is more suitable, and after same temperature and time solidified, the mortar mould was water-soluble better.
2, mould is processed: after the assembly jig inner surface cleaning during to the 2 blank moulding of mortar mould is clean, polish smooth with the silicon carbide paper that is not less than 400#, then brush uniformly the quick-dry type releasing agent 2～3 times, will dry more than 5 minutes behind each brushing releasing agent and brush next time, last one deck at room temperature solidifies 30 minutes (other applicable releasing agent all can use).
3, mortar mould 2 blank moulding: mortar mould inner sleeve 3 is sleeved in the mould, then the mortar mould 2 batching gradation that stir is added in the ready mould, then carry out tamping, until fill whole mould.If the shape of mortar mould 2 blanks is unfavorable for the mold integral demoulding, it can be divided and partly make moulding; Otherwise can carry out global formation.
4, mortar mould 2 demouldings: after the moulding of mortar mould blank mould is removed carefully, avoided mortar to be bonded on the mould surface as far as possible.
5, mortar mould 2 solidifies: the mortar mould 2 after the demoulding is put into baking oven, be set to uniform temperature and be cured, but maximum temperature can not surpass 160 ℃, because polyvinyl alcohol is surpassing the etherificate of will dewatering more than 160 ℃, lose dissolubility, can not carry out the demoulding by the method for washing at last.Solidify minimum temperature and can not be lower than 100 ℃, guarantee curing efficiency.
Through test, we find: the 1. batching of same proportioning, hardening time is longer, and is water-soluble poorer.Therefore, the time of curing should determine according to the size of goods.2. solidification temperature be 120～140 ℃ more suitable.
Step 2, the assembling of solubility core: with mortar mould 2 and mandrel 1, retaining ring 4 assembled formations.
Mandrel 1 penetrates in the mortar mould 2, and mortar mould inner sleeve 3 plays the role of positioning, and mandrel 1, mortar mould 2 is circumferentially fixing, then uses retaining ring 4 axial restraints.
Step 3, solubility core machining: if the form and dimensional precision of the interior profile of winding product is required very high, then must carry out dimensioned to the outer mold surface of mortar mould by the method for machining.If less demanding, also can guarantee by the size of mortar mould 2 moulds the interior profile shape and size of final winding product, this step is dispensable in this case.
The post processing of step 4, solubility core: if mortar mould blank shape defectiveness, fill processing with automobile putty, polish smooth with 0～No. 1 dry abrasive paper, the teflon cloth that last cutting conforms to mortar mould outer mold surface sticks on the mortar mould outer surface again; Otherwise, need not fill, polish directly to spread and cover teflon cloth.If make the non-metallic inner liner container, also need to press related process at outer surface and make inner liner; Cover the rubber liner layer such as bonding shop, or hand pastes and makes the frp lining layer.
Two, utilize solubility core of the present invention to make non-metallic inner liner or without the method for liner fiber winding container, as shown in Figure 4:
Step 1, make the solubility core according to the method described above;
Step 2, Filament-wound Machine: fibre reinforced materials is infiltrated in the resin adhesive liquid, by wrapping machine according to program on core, according to certain laying order, carry out hoop and longitudinally winding, the forming composite structure sheaf.
Step 3, curing: the goods after Wrapping formed are put into stove together with core solidify, solidification temperature be no more than the solidification temperature of core, otherwise polyvinyl alcohol loses dissolubility more suitable below 160 ℃, can not carry out the demoulding by the method for washing.
Step 4, the washing demoulding: the more high more soluble demoulding of the temperature of washing.Water temperature be controlled at 60～80 ℃ more suitable.
The just specific embodiment of this invention that specification is described, various not illustrating limited the essence of an invention Composition of contents, the person of an ordinary skill in the technical field after having read specification can to before the described specific embodiment make an amendment or be out of shape, and do not deviate from essence of an invention and scope.
Claims (10)
1. the preparation method of solubility core is characterized in that, may further comprise the steps:
Step 1, mortar mould (2) blank moulding:
A) mortar mould (2) batching: mortar mould batching is comprised of quartz sand, polyethylene alcohol and water; Quartz sand: polyvinyl alcohol: the weight proportion of water is 100: 1～2: 6;
B) mortar mould (2) blank moulding: mortar mould inner sleeve (3) is sleeved in the mould, then mortar mould (2) batching that stirs is added in the mould, until fill;
C) mortar mould (2) demoulding;
D) mortar mould (2) solidifies: the mortar mould (2) after the demoulding is solidified;
Step 2, the assembling of solubility core: mandrel (1) penetrates in the mortar mould (2), utilizes mortar mould inner sleeve (3) circumferentially fixing mandrel (1), mortar mould (2), then uses retaining ring (4) to carry out axial restraint.
2. the preparation method of solubility core according to claim 1 is characterized in that, the solidification temperature in the described step 1 is 100～160 ℃.
3. the preparation method of solubility core according to claim 2 is characterized in that, the solidification temperature in the described step 1 is 120～140 ℃.
4. the preparation method of solubility core according to claim 1 is characterized in that, described mortar mould (2) is prepared burden first polyvinyl alcohol to be mixed with water and is made into poly-vinyl alcohol solution, then mixes with quartz sand.
5. the preparation method of solubility core according to claim 1 is characterized in that, described mortar mould (2) is symmetrical revolving body, and its profile and size are guaranteed by mould or mortar mould blank is come moulding by machined.
6. the preparation method of solubility core according to claim 1 is characterized in that, the outer surface that also is included in after step 2 solubility core is assembled is made inner liner.
7. non-metallic inner liner or without the preparation method of liner fiber winding container is characterized in that may further comprise the steps:
Step 1, make the solubility core according to the method for claim 1～6; If make without the liner fiber winding container, core is without the liner core; If make the non-metallic inner liner container, core is the core that inner liner is arranged;
Step 2, Filament-wound Machine: fibre reinforced materials is infiltrated in the resin adhesive liquid, by wrapping machine according to program on core, according to certain laying order, carry out hoop and longitudinally winding;
Step 3, curing;
Step 4, the washing demoulding.
8. non-metallic inner liner as claimed in claim 7 or without the preparation method of liner fiber winding container is characterized in that solidification temperature in the described step 3 is below 160 ℃.
9. non-metallic inner liner as claimed in claim 7 or without the preparation method of liner fiber winding container is characterized in that described step 4 washing demoulding water temperature is controlled at 60～80 ℃.
10. solubility core, it is characterized in that comprising mandrel (1), mortar mould (2), mortar mould inner sleeve (3), retaining ring (4), mortar mould (2) is fixed on the mandrel (1) by mortar mould inner sleeve (3), and by retaining ring (4) locking; Mortar mould (2) consists of quartz sand by quartz sand and polyvinyl alcohol, water: polyvinyl alcohol: the weight proportion of water is 100: 1～2: 6.
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| CN2013100401159A CN103317628A (en) | 2013-02-01 | 2013-02-01 | Preparation methods for soluble core mould and nonmetal-lining or no-lining fibre winding container |
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| CN2013100401159A CN103317628A (en) | 2013-02-01 | 2013-02-01 | Preparation methods for soluble core mould and nonmetal-lining or no-lining fibre winding container |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670390A (en) * | 2016-11-21 | 2017-05-17 | 湖北三江航天红阳机电有限公司 | Forming method for soluble sand core of winding shell with end socket |
| CN109282136A (en) * | 2018-09-12 | 2019-01-29 | 沈阳中复科金压力容器有限公司 | Polyimide fiber reinforced resin based composites reinforcing ring and preparation |
| CN109723924A (en) * | 2018-10-16 | 2019-05-07 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | A kind of carbon fiber elbow and its manufacturing method for ship |
| CN109968686A (en) * | 2019-05-13 | 2019-07-05 | 哈尔滨玻璃钢研究院有限公司 | A kind of Filament Wound Composite device and assembly method |
| CN111350938A (en) * | 2018-12-20 | 2020-06-30 | 本田技研工业株式会社 | Pressure vessel and method for manufacturing the same |
| CN111678033A (en) * | 2020-04-30 | 2020-09-18 | 合肥工业大学 | Lining-free composite material liquid oxygen storage tank and preparation method thereof |
| CN111890705A (en) * | 2020-03-26 | 2020-11-06 | 中国运载火箭技术研究院 | Satellite support mould |
| CN112405959A (en) * | 2020-11-17 | 2021-02-26 | 湖北三江航天江北机械工程有限公司 | Light structure sand core mold forming method |
| CN112571822A (en) * | 2020-10-29 | 2021-03-30 | 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 |
| CN112872298A (en) * | 2021-01-08 | 2021-06-01 | 湖北三江航天江北机械工程有限公司 | Lightweight high-strength sand core mold forming method |
| CN113510947A (en) * | 2021-03-23 | 2021-10-19 | 哈尔滨玻璃钢研究院有限公司 | Method for forming composite continuous fiber chain |
| CN114834062A (en) * | 2022-03-29 | 2022-08-02 | 天津爱思达新材料科技有限公司 | Forming process of special-shaped airplane air inlet channel |
| CN114951555A (en) * | 2022-04-29 | 2022-08-30 | 哈尔滨玻璃钢研究院有限公司 | Serial water-soluble sand core mold and manufacturing method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670390B (en) * | 2016-11-21 | 2018-11-02 | 湖北三江航天红阳机电有限公司 | A kind of solvable sand core forming method of band Dome winding shell |
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| CN109282136A (en) * | 2018-09-12 | 2019-01-29 | 沈阳中复科金压力容器有限公司 | Polyimide fiber reinforced resin based composites reinforcing ring and preparation |
| CN109723924A (en) * | 2018-10-16 | 2019-05-07 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | A kind of carbon fiber elbow and its manufacturing method for ship |
| CN111350938A (en) * | 2018-12-20 | 2020-06-30 | 本田技研工业株式会社 | Pressure vessel and method for manufacturing the same |
| CN109968686B (en) * | 2019-05-13 | 2024-05-03 | 哈尔滨玻璃钢研究院有限公司 | Composite material winding device and assembly method |
| CN109968686A (en) * | 2019-05-13 | 2019-07-05 | 哈尔滨玻璃钢研究院有限公司 | A kind of Filament Wound Composite device and assembly method |
| CN111890705A (en) * | 2020-03-26 | 2020-11-06 | 中国运载火箭技术研究院 | Satellite support mould |
| CN111678033A (en) * | 2020-04-30 | 2020-09-18 | 合肥工业大学 | Lining-free composite material liquid oxygen storage tank and preparation method thereof |
| CN112571822A (en) * | 2020-10-29 | 2021-03-30 | 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 |
| CN112405959A (en) * | 2020-11-17 | 2021-02-26 | 湖北三江航天江北机械工程有限公司 | Light structure sand core mold forming method |
| CN112872298A (en) * | 2021-01-08 | 2021-06-01 | 湖北三江航天江北机械工程有限公司 | Lightweight high-strength sand core mold forming method |
| CN113510947A (en) * | 2021-03-23 | 2021-10-19 | 哈尔滨玻璃钢研究院有限公司 | Method for forming composite continuous fiber chain |
| CN114834062A (en) * | 2022-03-29 | 2022-08-02 | 天津爱思达新材料科技有限公司 | Forming process of special-shaped airplane air inlet channel |
| CN114951555A (en) * | 2022-04-29 | 2022-08-30 | 哈尔滨玻璃钢研究院有限公司 | Serial water-soluble sand core mold and manufacturing method thereof |
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