CN112428597A - Method for preventing composite material from forming resin-rich area - Google Patents
Method for preventing composite material from forming resin-rich area Download PDFInfo
- Publication number
- CN112428597A CN112428597A CN202011195079.XA CN202011195079A CN112428597A CN 112428597 A CN112428597 A CN 112428597A CN 202011195079 A CN202011195079 A CN 202011195079A CN 112428597 A CN112428597 A CN 112428597A
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- CN
- China
- Prior art keywords
- resin
- rich
- temperature resistant
- mold
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011347 resin Substances 0.000 title claims abstract 13
- 229920005989 resin Polymers 0.000 title claims abstract 13
- 239000002131 composite material Substances 0.000 title claims abstract 8
- 238000000034 method Methods 0.000 title claims abstract 4
- 239000000463 material Substances 0.000 claims abstract 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract 3
- 239000000741 silica gel Substances 0.000 claims abstract 3
- 229910002027 silica gel Inorganic materials 0.000 claims abstract 3
- 238000000053 physical method Methods 0.000 claims abstract 2
- 230000015572 biosynthetic process Effects 0.000 claims 4
- 230000007547 defect Effects 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000007779 soft material Substances 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a method for avoiding a composite material from forming a resin-rich area, and relates to the field of forming the trailing edge of a large-scale composite material wind power generation blade. The production steps are as follows: laying a product body structural material and pouring auxiliary materials according to the technical requirements, laying a high-temperature-resistant material close to an area which is easy to be rich in resin of a web plate mould, laying a vacuum bag film along the formed appearance, standing the product for a period of time, solidifying, and demoulding the high-temperature-resistant silica gel material by a physical method.
Description
Technical Field
The invention relates to the field of forming the trailing edge of a large-scale composite material wind power generation blade, in particular to the field of forming composite materials.
Background
The guiding medium which is introduced into the process for the resin flow plays a decisive role in the impregnation of the entire composite part. At present, most of diversion nets used under the high-temperature condition are extrusion type diversion nets and are hard in materials, if no treatment is carried out before laying, the diversion nets at the complex area of the molded surface of a die cannot be completely attached to a prefabricated part or wrinkles occur, so that the problems of part layering, resin enrichment, uneven surface and the like are caused. The existing flow guide net shaping process and the using method thereof meet the requirement of the complicated profile following property by heating the flow guide net to deform the flow guide net, and need heating equipment and certain heating and cooling time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a method for avoiding composite materials from forming a resin-rich area, and improves a method for forming the resin-rich area on a complex molded surface of the rear edge of a large-scale composite material wind power generation blade.
The invention is realized by the following technical scheme: the mold structure for avoiding the composite material from forming the resin-rich area is as follows:
the die comprises a web die, a structural material, an auxiliary material, a high-temperature resistant material and a bag die from outside to inside in sequence.
The high-temperature resistant material is placed in an area which is easy to generate rich resin, pressure is given to the auxiliary material, the auxiliary material is enabled to be tightly attached to the structural material and the mold, a cavity is prevented from being formed between the auxiliary material and the mold, accordingly, the defect that the resin-rich area is formed by enrichment of glue liquid in the pouring process is eliminated, and the follow-up demoulding efficiency and the web bonding quality are improved.
The high-temperature resistant material is placed in the area which is easy to generate rich resin, and the specific position depends on the production process.
The high-temperature material is a deformable soft material.
Further, the high temperature resistant material can be reused and can be replaced by disposable material.
Furthermore, the high-temperature resistant material can be silica gel, and can also be high-temperature resistant PET or PVC material.
Furthermore, the high-temperature-resistant materials can be placed in any layer between the bag die and the web die according to the requirement.
The steps for completing the production by adopting the die structure are as follows:
firstly, laying a product body structural material and a pouring auxiliary material according to the technical requirements,
secondly, a high-temperature resistant material is laid close to the area of the web mold easy to be rich in resin, one side of the high-temperature resistant material is close to the area easy to be rich in resin, the other side of the high-temperature resistant material can be designed into different shapes according to requirements to ensure the force application direction of the high-temperature resistant material, and simultaneously the resin-rich area condition of the corner area of the high-temperature resistant material and the structural material is weakened or even eliminated,
thirdly, laying the vacuum bag film along the formed shape,
and fourthly, after the product is placed for a period of time and solidified, demolding the high-temperature-resistant silica gel material by a physical method.
The invention is realized by pressing the high-temperature-resistant silica gel material to assist in pouring auxiliary materials to enable the auxiliary materials to be follow-up, and filling the high-temperature-resistant silica gel material into the resin-rich area. Under the background of the current speed-up and quality improvement, the time consumption is less and the cost is lower by using a mode of compressing auxiliary materials and filling gaps by using high-temperature-resistant silica gel materials.
The invention has the beneficial effects that:
1. the problem of resin enrichment of products caused by the fact that auxiliary materials cannot be attached to a die, such as the trailing edge of the blade, of a complex molded surface is solved;
2. the time for cleaning the resin-rich product after demoulding is shortened, and the risk of secondary damage caused by post-procedure treatment is eliminated;
3. extra conditions and waiting time do not need to be set, the materials are simple and easy to obtain, and the material can be designed according to different requirements and can be repeatedly used, so that the cost is reduced;
4. no secondary pollution is brought to the product body.
Drawings
Fig. 1 shows a schematic front view of an embodiment according to the invention.
In the figure: 1. a high temperature resistant material; 2. a structural material; 3. auxiliary materials; 4. bag molding; 5. a web mold; 6. producing a product; 7. resin rich domains are easily created.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
For convenience of understanding, technical terms are explained as follows:
structural material: a frame structure added for realizing the shape of the product to mold the desired product, including glass fiber cloth and resin, etc.
Auxiliary materials: the material is also called as a pouring auxiliary material to form a glue solution channel, so that a rough surface is manufactured, and the demoulding of the product is facilitated.
Bag molding: the surface is smooth when the product is contacted with a produced product, and the product is torn off from the surface of the product after being formed.
A web plate die: the same effect as a conventional mold is achieved to form a web product containing mold.
As shown in fig. 1, the mold structure for avoiding the formation of the resin rich region in the composite material is as follows:
the die comprises a web die, a structural material, an auxiliary material, a high-temperature resistant material and a bag die from outside to inside in sequence.
The high-temperature resistant material is placed in an area which is easy to generate rich resin, pressure is given to the auxiliary material, the auxiliary material is enabled to be tightly attached to the structural material and the mold, a cavity is prevented from being formed between the auxiliary material and the mold, accordingly, the defect that the resin-rich area is formed by enrichment of glue liquid in the pouring process is eliminated, and the follow-up demoulding efficiency and the web bonding quality are improved.
The high-temperature resistant material is placed in the area which is easy to generate rich resin, and the specific position depends on the production process.
The high-temperature material is a deformable soft material.
Further, the high temperature resistant material can be reused and can be replaced by disposable material.
Furthermore, the high-temperature resistant material can be silica gel, and can also be high-temperature resistant PET or PVC material.
Furthermore, the high-temperature-resistant materials can be placed in any layer between the bag die and the web die according to the requirement.
The steps for completing the production by adopting the die structure are as follows:
firstly, laying a product body structural material and a pouring auxiliary material according to the technical requirements,
secondly, a high-temperature resistant material is laid close to the area of the web mold easy to be rich in resin, one side of the high-temperature resistant material is close to the area easy to be rich in resin, the other side of the high-temperature resistant material can be designed into different shapes according to requirements to ensure the force application direction of the high-temperature resistant material, and simultaneously the resin-rich area condition of the corner area of the high-temperature resistant material and the structural material is weakened or even eliminated,
thirdly, laying the vacuum bag film along the formed shape,
and fourthly, after the product is placed for a period of time and solidified, demolding the high-temperature-resistant silica gel material by a physical method.
The invention has the beneficial effects that: the type of the high-temperature-resistant silica gel material can be selected according to the type of the pouring glue solution, the exothermic peak temperature and the like, and the shape and the thickness of the material can be designed according to the shape of a mould and a product. The material is simple and easy to obtain, can be directly purchased, can be directly replaced after aging, does not need to be processed by adding an additional machine on site, has the same laying temperature with the temperature of the product manufacturing process, does not need to design additional production conditions, can save the field, the cost and the time, and improves the production efficiency.
The high-temperature-resistant silica gel material is not in direct contact with the product, so that the pollution to the product body, which is brought by introducing other chemical components and cannot be estimated, can be avoided, secondary grinding is not required to be carried out on the product subsequently, and secondary damage is avoided. The method specifically comprises the following steps:
1. the problem of resin enrichment of products caused by the fact that auxiliary materials cannot be attached to a die, such as the trailing edge of the blade, of a complex molded surface is solved;
2. the time for cleaning the resin-rich product after demoulding is shortened, and the risk of secondary damage caused by post-procedure treatment is eliminated;
3. extra conditions and waiting time do not need to be set, the materials are simple and easy to obtain, and the material can be designed according to different requirements and can be repeatedly used, so that the cost is reduced;
4. no secondary pollution is brought to the product body.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A production mould for avoiding composite material forming resin-rich areas is characterized in that: the production mold comprises a web mold, a structural material, an auxiliary material, a high-temperature resistant material and a bag mold from outside to inside in sequence.
The high-temperature resistant material is placed in an area which is easy to generate rich resin, pressure is given to the auxiliary material, the auxiliary material is enabled to be tightly attached to the structural material and the mold, a cavity is prevented from being formed between the auxiliary material and the mold, accordingly, the defect that the resin-rich area is formed by enrichment of glue liquid in the pouring process is eliminated, and the follow-up demoulding efficiency and the web bonding quality are improved.
The high-temperature material is a deformable soft material.
2. The production mold for avoiding formation of resin-rich areas in composite materials according to claim 1, wherein: the high-temperature resistant material is made of a reusable material or a disposable material.
3. The production mold for avoiding formation of resin-rich areas in composite materials according to claim 1, wherein: the high temperature resistant material is silica gel, high temperature resistant PET or PVC.
4. The production mold for avoiding formation of resin-rich areas in composite materials according to claim 1, wherein: the high-temperature resistant material can be placed in any layer between the bag die and the web die according to the requirement.
5. A method for avoiding formation of resin-rich regions in a composite material, using the production mold according to any one of claims 1 to 4, characterized in that: the production steps are as follows:
firstly, laying a product body structural material and a pouring auxiliary material according to the technical requirements,
secondly, a high-temperature resistant material is laid close to the area of the web mold easy to be rich in resin, one side of the high-temperature resistant material is close to the area easy to be rich in resin, the other side of the high-temperature resistant material can be designed into different shapes according to requirements to ensure the force application direction of the high-temperature resistant material, and simultaneously the resin-rich area condition of the corner area of the high-temperature resistant material and the structural material is weakened or even eliminated,
thirdly, laying the vacuum bag film along the formed shape,
and fourthly, after the product is placed for a period of time and solidified, demolding the high-temperature-resistant silica gel material by a physical method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195079.XA CN112428597A (en) | 2020-10-30 | 2020-10-30 | Method for preventing composite material from forming resin-rich area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195079.XA CN112428597A (en) | 2020-10-30 | 2020-10-30 | Method for preventing composite material from forming resin-rich area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112428597A true CN112428597A (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011195079.XA Pending CN112428597A (en) | 2020-10-30 | 2020-10-30 | Method for preventing composite material from forming resin-rich area |
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| Country | Link |
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| CN (1) | CN112428597A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858659A (en) * | 2021-09-30 | 2021-12-31 | 中材科技（酒泉）风电叶片有限公司 | Wind power blade core material structure and laying method thereof |
| CN116118229A (en) * | 2023-02-20 | 2023-05-16 | 东莞泰合复合材料有限公司 | Carbon fiber products with grooves improve the glue accumulation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837432A (en) * | 2012-10-09 | 2012-12-26 | 洛阳双瑞风电叶片有限公司 | Forming method for forming two sets of composite web plates at one time |
| CN105128358A (en) * | 2015-08-20 | 2015-12-09 | 洛阳双瑞风电叶片有限公司 | Manufacturing method for wind power blade |
| CN108661854A (en) * | 2018-02-01 | 2018-10-16 | 上海电气风电集团有限公司 | A kind of pneumatic equipment bladess and its blade enhancing structure part |
| CN109822946A (en) * | 2018-12-29 | 2019-05-31 | 中材科技（酒泉）风电叶片有限公司 | A kind of wind electricity blade web perfusion optimization technique |
| CN110884165A (en) * | 2019-11-11 | 2020-03-17 | 天津中车风电叶片工程有限公司 | Construction structure and method for improving resin enrichment of complex profile of composite web |
-
2020
- 2020-10-30 CN CN202011195079.XA patent/CN112428597A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837432A (en) * | 2012-10-09 | 2012-12-26 | 洛阳双瑞风电叶片有限公司 | Forming method for forming two sets of composite web plates at one time |
| CN105128358A (en) * | 2015-08-20 | 2015-12-09 | 洛阳双瑞风电叶片有限公司 | Manufacturing method for wind power blade |
| CN108661854A (en) * | 2018-02-01 | 2018-10-16 | 上海电气风电集团有限公司 | A kind of pneumatic equipment bladess and its blade enhancing structure part |
| CN109822946A (en) * | 2018-12-29 | 2019-05-31 | 中材科技（酒泉）风电叶片有限公司 | A kind of wind electricity blade web perfusion optimization technique |
| CN110884165A (en) * | 2019-11-11 | 2020-03-17 | 天津中车风电叶片工程有限公司 | Construction structure and method for improving resin enrichment of complex profile of composite web |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858659A (en) * | 2021-09-30 | 2021-12-31 | 中材科技（酒泉）风电叶片有限公司 | Wind power blade core material structure and laying method thereof |
| CN116118229A (en) * | 2023-02-20 | 2023-05-16 | 东莞泰合复合材料有限公司 | Carbon fiber products with grooves improve the glue accumulation method |
| CN116118229B (en) * | 2023-02-20 | 2025-08-05 | 东莞泰合复合材料有限公司 | Method for improving glue deficiency in carbon fiber products with grooves |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210302 |
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| RJ01 | Rejection of invention patent application after publication |