CN101665609A - Water-soluble die material for resin matrix composite materials and method for manufacturing water-soluble die - Google Patents
Water-soluble die material for resin matrix composite materials and method for manufacturing water-soluble die Download PDFInfo
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- CN101665609A CN101665609A CN200910308993A CN200910308993A CN101665609A CN 101665609 A CN101665609 A CN 101665609A CN 200910308993 A CN200910308993 A CN 200910308993A CN 200910308993 A CN200910308993 A CN 200910308993A CN 101665609 A CN101665609 A CN 101665609A
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Abstract
The invention relates to a water-soluble die material for resin matrix composite material and a method for manufacturing a water-soluble die. The invention aims at solving the problem of poor performance of high temperature resistance of the existing water-soluble die (mandrel) used for the resin matrix composite material. The water-soluble die material used for a resin matrix composite material comprises aqueous solution of a water-soluble high polymer and packing material used for the water-soluble die, wherein the aqueous solution of the water-soluble high polymer is polyvinyl pyrrolidone aqueous solution with mass percent concentration of 10-30 percent; and the mass of solute of the polyvinyl pyrrolidone aqueous solution is 1 percent to 15 percent of that of the packing material. The method comprises the following steps: blending, preforming, drying, mechanical processing and surface treatment. The water-soluble die manufactured by adopting the water-soluble die material and by using the method can be widely applied to the shaping of various resin matrix composite materials, especially for the shaping of the closed structure of the resin matrix composite material produced by die pressing and winding process as well as the high-temperature resistant composite material.
Description
Technical field
The present invention relates to the making method of a kind of water-soluble moulding stock and water-soluble mould.
Background technology
The selected tackiness agent of traditional water-soluble material has inorganic salt and water-soluble polymer, and not only water absorbability is strong, whose surfaces is of poor quality for the salt core of making of above-mentioned materials (core), and dimensional precision also is difficult for guaranteeing.Water-soluble polymer is the macromolecular compound with hydrophilic group, polymer matrix composites are polyvinyl alcohol through water-soluble moulding stock commonly used, though be easy to moulding, but second-order transition temperature is low, thermostability is relatively poor, polyvinyl alcohol has phenomenons such as blackout, sintering when solidification value surpasses 150 ℃, so is difficult to moulding stock is cleaned out fully during the demoulding.For the higher composite material process planning of solidification value, this class water-soluble material of similar polyvinyl alcohol can't satisfy the requirement of use, needs a kind of higher water-soluble polymer of temperature tolerance that has.Up to the present, do not provide high temperature resistant (more than 150 ℃) water-soluble mould (core) material that polymer matrix composites use and the making method of water-soluble mould in the prior art.
Summary of the invention
The purpose of this invention is to provide a kind of polymer matrix composites with water-soluble moulding stock and make water-soluble mould method, to solve the problem that there is the resistance to elevated temperatures difference in water-soluble mould (core) that existing polymer matrix composites use.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
Polymer matrix composites of the present invention comprise the high molecular weight water soluble polymer aqueous solution and water-soluble mould filler with water-soluble moulding stock, and the described high molecular weight water soluble polymer aqueous solution is that mass percent concentration is 10%～30% the Polyvinylpyrolidone (PVP) aqueous solution; The solute quality of the Polyvinylpyrolidone (PVP) aqueous solution is 1%～15% of a water-soluble mould usefulness packing quality.
The method of utilizing above-mentioned water-soluble moulding stock to make water-soluble mould realizes according to following steps:
Step 1, batching: earlier that Polyvinylpyrolidone (PVP) is soluble in water, be made into concentration and be 10%～30% the aqueous solution, add water-soluble mould filler, the quality of Polyvinylpyrolidone (PVP) is 1%～15% of a water-soluble mould usefulness packing quality, stirs and makes water-soluble moulding stock;
Step 2, premolding: the water-soluble moulding stock that step 1 is made is put into and is used for making the mould compacting of water-soluble mould or core to make the outer shape of needed water-soluble mould;
Step 3, drying: the preformed water-soluble mould that step 2 makes is dried, and drying temperature is 100 ℃～200 ℃, makes the water-soluble mould of moulding until this preformed water-soluble mould drying;
Step 4, mechanical workout: dried preformed water-soluble die surface is carried out mechanical workout to obtain the more accurate water-soluble mould of geometrical dimension;
Step 5, surface treatment: being coated with one deck mass percent concentration at the outside surface of the water-soluble mould after mechanical workout is 10%～30% the Polyvinylpyrolidone (PVP) aqueous solution, and carry out drying treatment, dried coating forms hard protective film on water-soluble mold outer surface; Make water-soluble mould.
The invention has the beneficial effects as follows:
The high molecular weight water soluble polymer Zhao Polyvinylpyrolidone (PVP) (water soluble adhesive) that water-soluble moulding stock of the present invention adopted is a kind of water-soluble polymer with good thermostability, its second-order transition temperature reaches 220 ℃, resistance to elevated temperatures is good, is fit to the moulding that solidification value surpasses 150 ℃ polymer matrix composites.Polyvinylpyrolidone (PVP) is a kind of low-density water-soluble substances, and the core for preparing with its has light weight, and thermal expansivity is little, and profile and size can be carried out machining as required.The water-soluble moulding stock that contains Polyvinylpyrolidone (PVP) has certain mechanical strength, is that the cubes of 25.4mm is done the compressive strength experiment for the length of side, and compressive strength reaches 10MPa; Therefore say, adopt water-soluble moulding stock of the present invention and utilize the prepared water-soluble mould of present method (core) can be widely used in the moulding of various polymer matrix composites, especially for the application promise in clinical practice that forms of the polymer matrix composites enclosed construction of mold pressing and winding process production and high temperature resistant composite.
It is simple that the method for the invention has a processing step, the advantage that the water-soluble core mould that makes with the inventive method has is high temperature resistant, be easy to moulding, surface quality is good, and be easy to the demoulding.
Description of drawings
Fig. 1 is the FB(flow block) (step 1 is to step 5) of the technological process of water-soluble Mold Making of the present invention.
Embodiment
Embodiment one: the described polymer matrix composites of present embodiment comprise the high molecular weight water soluble polymer aqueous solution and water-soluble mould filler with water-soluble moulding stock, and the described high molecular weight water soluble polymer aqueous solution is that mass percent concentration is 10%～30% the Polyvinylpyrolidone (PVP) aqueous solution; The solute quality of the Polyvinylpyrolidone (PVP) aqueous solution is 1%～15% of a water-soluble mould usefulness packing quality.
Embodiment two: the described water-soluble mould filler of present embodiment is a kind of in micron order glass microballon, micron silica powder, micron order aluminium oxide powder and the micron order titanium dioxide ceramic powder.Other composition is identical with embodiment one.
Embodiment three: the described water-soluble mould of present embodiment with filler by any two or more material in micron order glass microballon, micron silica powder, micron order aluminium oxide powder and the micron order titanium dioxide ceramic powder by constituting than uniform mixing arbitrarily.The described water-soluble mould of present embodiment can be reconciled its density by adopting different components and component ratio to concern with filler, to adapt to the moulding of various polymer matrix composites better.Other composition is identical with embodiment one.
Embodiment four: the described high molecular weight water soluble polymer aqueous solution of present embodiment is that mass percent concentration is 15% Polyvinylpyrolidone (PVP) (the being called for short PVP) aqueous solution.Other composition is identical with embodiment one, two or three.
Embodiment five: the quality of solute is 10% of a water-soluble mould usefulness packing quality in the described Polyvinylpyrolidone (PVP) aqueous solution of present embodiment.Other composition is identical with embodiment four.
Embodiment six: the described water-soluble moulding stock of present embodiment also comprises water-soluble mould auxiliary packing, and described water-soluble mould is 1～10% of a water-soluble mould usefulness packing quality with the quality of auxiliary packing; Described water-soluble mould auxiliary packing is micron order powdered graphite or micron order metal-powder.Adding graphite or metal-powder are used for improving the physical properties of moulding stock, as thermal conductivity, thermal expansivity etc.Other composition is identical with embodiment one, two, three or five.
Embodiment seven: referring to Fig. 1, the method for the water-soluble mould of the described making of present embodiment realizes according to following steps:
Step 1, batching: earlier that Polyvinylpyrolidone (PVP) is soluble in water, be made into concentration and be 10%～30% the aqueous solution, after treating to dissolve fully, add water-soluble mould filler, the quality of Polyvinylpyrolidone (PVP) is 1%～15% of a water-soluble mould usefulness packing quality, stirs and makes water-soluble moulding stock;
Step 2, premolding: the water-soluble moulding stock that step 1 is made is put into the mould compacting that is used for making water-soluble mould or core to make the outer shape of needed water-soluble mould (core), can reduce the workload of mechanical workout like this; Or the water-soluble moulding stock that step 1 makes made the premolding piece, make the outer shape of needed water-soluble mould (core) again by various mechanical processing toolses; In the premolding process, big more to the moulding stock applied pressure, the anti-pressure ability of the core of making is just strong more;
Step 3, drying: the preformed water-soluble mould that step 3 makes is dried, and drying temperature is 100 ℃～200 ℃, makes the water-soluble mould of moulding until this preformed water-soluble mould drying; The sample that the size that depends on the sample that is dried time of drying, size are big more, the time of drying that needs is long more; When oven dry, preformed core can be put into baking oven and dry; Must moisture wherein be dried by the fire away fully by drying, otherwise will influence performance of composites;
Step 4, mechanical workout: dried preformed water-soluble die surface is carried out mechanical workout to obtain the more accurate water-soluble mould of geometrical dimension (core); Can adopt various machining means to process to the premolding piece, can process needed different shape, comprise various arcs; Add and notice that cutter goes into the direction of cutter man-hour, in order to avoid defective appears in edges and corners;
Step 5, surface treatment: being coated with one deck mass percent concentration at the outside surface of the water-soluble mould (core) after mechanical workout is 10%～30% the Polyvinylpyrolidone (PVP) aqueous solution, and carry out drying treatment, dried coating forms hard protective film on water-soluble mould (core) outside surface; Make required water-soluble mould (core).
Core is processed into and carries out the surface-treated purpose after the shape that needs and be: in order to avoid in the solidified process, glue (being used for the glue on the prepreg of composite material forming) infiltrates the slight void of water-soluble core mould material, gives to remove the core material and bring difficulty.
Embodiment eight: present embodiment is in step 3, and described drying temperature is 150 ℃.Other step is identical with embodiment seven.
Embodiment nine: present embodiment is in step 5, and the mass percent concentration of the Polyvinylpyrolidone (PVP) aqueous solution is 15%.Other step is identical with embodiment seven or eight.
Principle of work: as shown in Figure 1, step 1 is to the step of step 5 for the water-soluble mould of making; Water-soluble mould (core) surface glue has been coated with back (after the surface treatment), also will brushing one deck releasing agent, and be convenient to core and successfully be removed.Behind brushing one deck releasing agent, in the moulding that water-soluble mould (core) can twine, the lay down fibre prepreg is used for matrix material, the demoulding after the moulding.Core material after the surface treatment can be used for the moulding of matrix material, and core has certain compression strength, can be used for winding, mould pressing process.Utilize the hole of composite products during the demoulding, just can be easy to the internal water soluble material is taken out.
Claims (9)
1. water-soluble moulding stock of polymer matrix composites, described water-soluble moulding stock comprises the high molecular weight water soluble polymer aqueous solution and water-soluble mould filler, it is characterized in that: the described high molecular weight water soluble polymer aqueous solution is that mass percent concentration is 10%～30% the Polyvinylpyrolidone (PVP) aqueous solution; The solute quality of the Polyvinylpyrolidone (PVP) aqueous solution is 1%～15% of a water-soluble mould usefulness packing quality.
2. the water-soluble moulding stock of polymer matrix composites according to claim 1 is characterized in that: described water-soluble mould filler is a kind of in micron order glass microballon, micron silica powder, micron order aluminium oxide powder and the micron order titanium dioxide ceramic powder.
3. the water-soluble moulding stock of polymer matrix composites according to claim 1 is characterized in that: described water-soluble mould with filler by any two or more material in micron order glass microballon, micron silica powder, micron order aluminium oxide powder and the micron order titanium dioxide ceramic powder by constituting than uniform mixing arbitrarily.
4. according to claim 1, the water-soluble moulding stock of 2 or 3 described polymer matrix composites, it is characterized in that: the described high molecular weight water soluble polymer aqueous solution is that mass percent concentration is 15% the Polyvinylpyrolidone (PVP) aqueous solution.
5. the water-soluble moulding stock of polymer matrix composites according to claim 4 is characterized in that: the quality of Polyvinylpyrolidone (PVP) solute is 10% of a water-soluble mould usefulness packing quality.
6. according to claim 1,2, the water-soluble moulding stock of 3 or 5 described polymer matrix composites, it is characterized in that: described water-soluble moulding stock also comprises water-soluble mould auxiliary packing, and described water-soluble mould is 1～10% of a water-soluble mould usefulness packing quality with the quality of auxiliary packing; Described water-soluble mould auxiliary packing is micron order powdered graphite or micron order metal-powder.
7. method of utilizing the described water-soluble moulding stock of claim 1 to make water-soluble mould, it is characterized in that: described method realizes according to following steps:
Step 1, batching: earlier that Polyvinylpyrolidone (PVP) is soluble in water, be made into concentration and be 10%～30% the aqueous solution, add water-soluble mould filler, the quality of Polyvinylpyrolidone (PVP) is 1%～15% of a water-soluble mould usefulness packing quality, stirs and makes water-soluble moulding stock;
Step 2, premolding: the water-soluble moulding stock that step 1 is made is put into and is used for making the mould compacting of water-soluble mould or core to make the outer shape of needed water-soluble mould;
Step 3, drying: the preformed water-soluble mould that step 2 makes is dried, and drying temperature is 100 ℃～200 ℃, makes the water-soluble mould of moulding until this preformed water-soluble mould drying;
Step 4, mechanical workout: dried preformed water-soluble die surface is carried out mechanical workout to obtain the more accurate water-soluble mould of geometrical dimension;
Step 5, surface treatment: being coated with one deck mass percent concentration at the outside surface of the water-soluble mould after mechanical workout is 10%～30% the Polyvinylpyrolidone (PVP) aqueous solution, and carry out drying treatment, dried coating forms hard protective film on water-soluble mold outer surface; Make water-soluble mould.
8. the method for the water-soluble mould of making according to claim 7 is characterized in that: in step 3, described drying temperature is 150 ℃.
9. according to the method for claim 7 or the water-soluble mould of 8 described making, it is characterized in that: in step 5, the mass percent concentration of the Polyvinylpyrolidone (PVP) aqueous solution is 15%.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010149A (en) * | 2010-10-15 | 2011-04-13 | 航天材料及工艺研究所 | Water-soluble mould and preparation method thereof and method for forming composite material |
| CN102113961A (en) * | 2011-01-25 | 2011-07-06 | 浙江工业大学 | Preparation method of AM (Asymmetric Membrane) osmotic pump capsule shell |
| CN102815889A (en) * | 2012-08-28 | 2012-12-12 | 西安航天复合材料研究所 | Water-soluble core model material |
| CN102827445A (en) * | 2012-08-21 | 2012-12-19 | 中国航天科工集团第六研究院41所 | Water-soluble core mold material for forming filament-wound case and preparation method of water-soluble core mold material |
| CN106217906A (en) * | 2016-08-30 | 2016-12-14 | 江苏恒神股份有限公司 | A kind of global formation composite shape for hat muscle manufacture method |
| CN106496908A (en) * | 2016-10-07 | 2017-03-15 | 常州创索新材料科技有限公司 | A kind of preparation method of water soluble core-mould material |
| 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 |
| CN110561782A (en) * | 2019-08-26 | 2019-12-13 | 长春长光宇航复合材料有限公司 | Composite material secondary curing molding method based on internal grid rib structure and application |
| CN111070503A (en) * | 2019-12-06 | 2020-04-28 | 天津爱思达航天科技有限公司 | Forming method, structure and forming die for carbon fiber component assisted by 3D printing technology |
| CN111331708A (en) * | 2020-03-06 | 2020-06-26 | 井冈山大学 | Water-soluble die material for resin-based composite material |
| CN114043650A (en) * | 2021-12-02 | 2022-02-15 | 上海新旺科技有限公司 | Water-soluble core mould |
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2009
- 2009-10-29 CN CN200910308993A patent/CN101665609A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010149A (en) * | 2010-10-15 | 2011-04-13 | 航天材料及工艺研究所 | Water-soluble mould and preparation method thereof and method for forming composite material |
| CN102010149B (en) * | 2010-10-15 | 2013-02-13 | 航天材料及工艺研究所 | Water-soluble mould and preparation method thereof and method for forming composite material |
| CN102113961A (en) * | 2011-01-25 | 2011-07-06 | 浙江工业大学 | Preparation method of AM (Asymmetric Membrane) osmotic pump capsule shell |
| CN102827445A (en) * | 2012-08-21 | 2012-12-19 | 中国航天科工集团第六研究院41所 | Water-soluble core mold material for forming filament-wound case and preparation method of water-soluble core mold material |
| CN102827445B (en) * | 2012-08-21 | 2015-01-14 | 中国航天科工集团第六研究院41所 | Water-soluble core mold material for forming filament-wound case and preparation method of same |
| CN102815889A (en) * | 2012-08-28 | 2012-12-12 | 西安航天复合材料研究所 | Water-soluble core model material |
| CN106217906A (en) * | 2016-08-30 | 2016-12-14 | 江苏恒神股份有限公司 | A kind of global formation composite shape for hat muscle manufacture method |
| CN106496908A (en) * | 2016-10-07 | 2017-03-15 | 常州创索新材料科技有限公司 | A kind of preparation method of water soluble core-mould material |
| 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 |
| CN109723924B (en) * | 2018-10-16 | 2022-03-15 | 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) | Carbon fiber elbow for ship and manufacturing method thereof |
| CN110561782A (en) * | 2019-08-26 | 2019-12-13 | 长春长光宇航复合材料有限公司 | Composite material secondary curing molding method based on internal grid rib structure and application |
| CN111070503A (en) * | 2019-12-06 | 2020-04-28 | 天津爱思达航天科技有限公司 | Forming method, structure and forming die for carbon fiber component assisted by 3D printing technology |
| CN111331708A (en) * | 2020-03-06 | 2020-06-26 | 井冈山大学 | Water-soluble die material for resin-based composite material |
| CN111331708B (en) * | 2020-03-06 | 2022-02-01 | 井冈山大学 | Water-soluble die material for resin-based composite material |
| CN114043650A (en) * | 2021-12-02 | 2022-02-15 | 上海新旺科技有限公司 | Water-soluble core mould |
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Application publication date: 20100310 |