CN202362267U - Real-time monitoring device for curing process of resin matrix composite material - Google Patents
Real-time monitoring device for curing process of resin matrix composite material Download PDFInfo
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- CN202362267U CN202362267U CN201120515654XU CN201120515654U CN202362267U CN 202362267 U CN202362267 U CN 202362267U CN 201120515654X U CN201120515654X U CN 201120515654XU CN 201120515654 U CN201120515654 U CN 201120515654U CN 202362267 U CN202362267 U CN 202362267U
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Abstract
The utility model provides a real-time monitoring device for curing process of a resin matrix composite material. The device is characterized in that the device comprises a bipolar comb shaped staggered tooth sensor, a capacitance measuring device, a thermal coupler and a temperature measuring device, wherein the bipolar comb shaped staggered tooth sensor is connected to the capacitance measuring device out of a mold through a lead; the thermal coupler is connected to the temperature measuring device through a lead; the bipolar comb shaped staggered tooth sensor and the thermal coupler are placed between a composite material and the mold; and the bipolar comb shaped staggered tooth sensor is attached on the surface of the composite material. According to the monitoring device, a capacitance absolute value of the composite material is measured during the curing process of the resin matrix composite material, thereby monitoring the curing process; and the real-time monitoring device of resin matrix composite material curing process, provided by the utility model, is simple and reliable in structure, convenient to use and low in cost.
Description
Technical field
The utility model relates to compound substance, relates in particular to the real time monitoring apparatus of curing course of resin based compounded material in the composite material process planning.
Background technology
Curing course of resin based compounded material is the process that molecule crosslinked reaction takes place the macromolecule matrix material under certain condition, forms insoluble not molten three-dimensional molecular network.Because in the solidification process, along with the carrying out of cross-linking reaction, resin viscosity constantly changes and raises gradually, in order to guarantee the composite products quality, qualified resin content also reduces the generation of defective, the opportunity and the size that need strict control to exert pressure.Therefore, the effective monitoring to curing course of resin based compounded material and guides corresponding process program and control product quality to have great importance.
The composite material solidification method for real-time monitoring of general implementation mainly contains at present, adopts the method for fiber sensor measuring resin variations in refractive index, adopts the ultrasonic wave real-time measurement sound velocity method, and the method for measurement resin dynamic dielectricity ability etc.
Said method utilizes respectively that resin reflects the curing proceeding or the state of resin or compound substance indirectly to the refractive index of light, to the variation of hyperacoustic propagation and dielectric properties in the resin curing process.Yet though these methods have higher sensitivity and reliability, the relevant detection device structure is complicated, costs an arm and a leg.For example, be example with the method that adopts the reaction of dynamic dielectricity energy measurement monitoring resin solidification, general at least five ten ten thousand Renminbi of the price of coherent detection equipment on the market.This is very big has limited the quality that manufacturing enterprise's large-scale promotion application improves composite products.
Therefore, the low and real-time curing monitoring method and apparatus of accurate and reliable compound substance of a kind of cost seems very necessary.
The utility model content
The purpose of the utility model has provided a kind of curing course of resin based compounded material real time monitoring apparatus, comprising: bipolar comb shape zigzag tooth sensor, capacitance measuring device, thermopair, temperature measuring equipment, wherein,
Bipolar comb shape zigzag tooth sensor is connected to the outer capacitance measuring device of mould through lead, and thermopair is wired to temperature measuring equipment;
Said bipolar comb shape zigzag tooth sensor and said thermopair are placed between compound substance and the mould, and said bipolar comb shape zigzag tooth sensor and composite material surface are fitted.
Preferably, said capacitance measuring device is a multimeter.
Preferably, said temperature measuring equipment is an electronic thermometer.
Preferably, said bipolar comb shape zigzag tooth sensor is for adopting the bipolar copper conductor circuit of comb shape of copper-clad polyimide film preparation, and the comb shape tooth interleaved shape at the two poles of the earth is arranged.
Preferably, said bipolar comb shape zigzag tooth sensor width is 10mm ± 5mm, and comb shape length is 20mm ± 5mm, and the broach width is 0.1mm～0.2mm.
The curing course of resin based compounded material real time monitoring apparatus of the utility model is simple and reliable for structure; Easy to use; And cost is lower; A complete set of watch-dog cost 5,000 yuan with interior (removing mould and baking oven), therefore be fit to quality and not obvious increase production cost that manufacturing enterprise's large-scale promotion improves composite products.
Description of drawings
Fig. 1 is the synoptic diagram of an embodiment of the utility model polymer matrix composites curing monitoring device;
Fig. 2 is the synoptic diagram of bipolar comb shape zigzag tooth sensor of the polymer matrix composites curing monitoring device of the utility model.
Embodiment
Below will combine accompanying drawing that the preferred embodiment of the utility model is elaborated, so that clearer purpose, characteristics and the advantage of understanding the utility model.It should be understood that embodiment shown in the drawings is not the restriction to the utility model scope, and just for the connotation of the utility model technical scheme is described.Part identical among the figure uses the same reference numerals to represent.
Referring to Fig. 1, polymer matrix composites solidify real time monitoring apparatus and comprise: bipolar comb shape zigzag tooth sensor 1, capacitance measuring device 2, thermopair 3, temperature measuring equipment 4.As shown in the figure, bipolar comb shape zigzag tooth sensor 1 and thermopair 3 are placed between compound substance 10 and the mould 5, and make sensor 1 and thermopair 3 fit tightly compound substance 10.Simultaneously, sensor 1 is connected to the outer capacitance measuring device 2 of mould through lead, and thermopair 3 also is wired to temperature measuring equipment 4.Capacitance measuring device 2 can be common multimeter or the special-purpose capacitance measuring instrument of measuring capacitive function that possess.Temperature measuring equipment 4 can be common thermometer or special-purpose thermometric instruments, the preferably electronic thermometer of measuring temperature that possess.Bipolar comb shape zigzag tooth sensor 1 is for adopting the bipolar copper conductor circuit of comb shape of copper-clad polyimide film preparation; The comb shape tooth interleaved shape at the two poles of the earth is arranged; Bipolar comb shape sensor width B is 10mm ± 5mm; The comb shape length A is 20mm ± 5mm, and the broach width C is 0.1mm～0.2mm, and is as shown in Figure 2.When compound substance is begun to heat, note time, temperature, capacitance reading, characterize the resin solidification extent of reaction according to capacitance with the variation of temperature and time.
The curing course of resin based compounded material real time monitoring apparatus principle of the utility model is: the temperature rise period appears in time measured polymer matrix composites capacitance or temperature raises and the trend of decay just beginning, and this is because the viscosity with temperature rising of polymer matrix composites reduces; When the polymer matrix composites curing reaction enters into gel reaction during the stage, the polymer matrix composites capacitance in time or temperature raise and increase; Its capacitance will reach maximal value and maintain after resin solidification is accomplished, and will no longer change along with the rising of time and temperature thereafter.
Based on above principle, the method that a kind of device of using the utility model is monitored curing course of resin based compounded material in real time comprises:
Bipolar comb shape zigzag tooth sensor and thermopair are positioned in the mould, and fit with the surface of uncured resin based composites;
Thermopair is connected to the outer temperature measuring equipment of mould through lead;
Bipolar comb shape zigzag tooth sensor is connected to the outer capacitance measuring device of mould and writes down time dependent absolute capacitance value in the composite material solidification process through lead; And
Absolute capacitance value according to measured sign resin state changes is confirmed resin state, and then monitors curing course of resin based compounded material in real time.
Through this method, if measured capacitance appeared in time or temperature raises and during the trend of decay, judges that then the resin curing reaction does not reach the gel reaction stage in the temperature rise period; Measured capacitance in time or temperature raise and when increasing, judge that then the resin curing reaction enters into the gel reaction stage; Measured capacitance reaches maximal value and when no longer changing along with the rising of time and temperature, then judges the resin solidification completion.
Based on this curing course of resin based compounded material method for real-time monitoring; According to the resin absolute capacitance value that is measured in real time; But which stage the curing of real-time judge polymer matrix composites has proceeded to, and can adjust in real time in view of the above and optimize parameters such as the time point of exerting pressure, size.
Embodiment
To novalac epoxy F-46, and the real-time monitoring of the solidification process of BF3, MEA and glass fiber compound material prepreg, step is following:
Material prepreg is placed on the mould 5;
With bipolar comb shape zigzag tooth sensor 1 and thermopair 3 be placed on material prepreg and mould 5 between, and fitted in the sensor 1 and the surface of material prepreg;
Sensor 1 is connected to the multimeter 2 that possesses the capacitance measurement function through lead, selects the nanofarad range;
Thermopair 3 is connected to temperature measuring equipment 4 through lead;
With prepreg be encapsulated in the mould and be evacuated to the negative pressure of 0.095MPa after put into autoclave 6 heating with mould integral body; And
Heating rate with 2 ℃/min is elevated to 180 ℃ from room temperature, and notes the capacitance of multimeter 2 and the temperature value of temperature measuring equipment 4.
Measured result such as following table:
| Time (min) | Temperature (℃) | Electric capacity (nF) |
| 0 | 25 | 2×10 -2 |
| 13 | 50 | 1.3×10 -2 |
| 28 | 80 | 6×10 -3 |
| 38 | 100 | 5×10 -3 |
| 43 | 110 | 4×10 -3 |
| 48 | 120 | 9×10 -3 |
| 58 | 140 | 8.2×10 -2 |
| 63 | 150 | 9.5×10 -2 |
| 68 | 160 | 2.9×10 -1 |
| 73 | 170 | 3.2×10 -1 |
| 78 | 180 | 3.3×10 -1 |
Can find out from top result; Electric capacity was on a declining curve when material prepreg solidified beginning; This is to cause viscosity to reduce because resin raises with temperature, and resin solidification reaction (gel) subsequently begins to be leading role and causes viscosity constantly to raise, and causes electric capacity constantly to increase.
Therefore; Obtain the compound substance that porosity is little, intensity is high, should the suitable moment before the resin capacitance begins to rise apply external pressure, promptly to this material prepreg; Should about 110 ℃ or 43min, pressurize, just can make compound substance reach optimum performance.Pressurization is (before about 100 ℃) too early, and viscosity is too little, and glue runs off too much, causes porosity big, form local delamination, and Compound Material Engineering intensity is low; Pressurize too late (after about 120 ℃), surpass gel point, the very big cross-linked network of viscosity forms, and impressed pressure can not be real resin and fiber densification, so porosity is very big, and Compound Material Engineering intensity is also very low.
The curing course of resin based compounded material real time monitoring apparatus of the utility model is simple and reliable for structure; Easy to use; And cost is lower; A complete set of watch-dog cost 5,000 yuan with interior (removing mould and baking oven), therefore be fit to quality and not obvious increase production cost that manufacturing enterprise's large-scale promotion improves composite products.
Below described the preferred embodiment of the utility model in detail, but it will be appreciated that, after having read the above-mentioned teachings of the utility model, those skilled in the art can do various changes or modification to the utility model.These equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (5)
1. curing course of resin based compounded material real time monitoring apparatus comprises: bipolar comb shape zigzag tooth sensor, capacitance measuring device, thermopair, temperature measuring equipment, wherein,
Bipolar comb shape zigzag tooth sensor is connected to the outer capacitance measuring device of mould through lead, and thermopair is wired to temperature measuring equipment;
Said bipolar comb shape zigzag tooth sensor and said thermopair are placed between compound substance and the mould, and said bipolar comb shape zigzag tooth sensor and composite material surface are fitted.
2. real time monitoring apparatus as claimed in claim 1 is characterized in that said capacitance measuring device is a multimeter.
3. real time monitoring apparatus as claimed in claim 1 is characterized in that said temperature measuring equipment is an electronic thermometer.
4. real time monitoring apparatus as claimed in claim 1 is characterized in that, said bipolar comb shape zigzag tooth sensor is for adopting the bipolar copper conductor circuit of comb shape of copper-clad polyimide film preparation, and the comb shape tooth interleaved shape at the two poles of the earth is arranged.
5. real time monitoring apparatus as claimed in claim 4 is characterized in that, said bipolar comb shape zigzag tooth sensor width is 10mm ± 5mm, and comb shape length is 20mm ± 5mm, and the broach width is 0.1mm～0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120515654XU CN202362267U (en) | 2011-12-12 | 2011-12-12 | Real-time monitoring device for curing process of resin matrix composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120515654XU CN202362267U (en) | 2011-12-12 | 2011-12-12 | Real-time monitoring device for curing process of resin matrix composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202362267U true CN202362267U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120515654XU Expired - Lifetime CN202362267U (en) | 2011-12-12 | 2011-12-12 | Real-time monitoring device for curing process of resin matrix composite material |
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| CN (1) | CN202362267U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445470A (en) * | 2011-12-12 | 2012-05-09 | 中国科学院宁波材料技术与工程研究所 | Real-time monitoring method and device for curing process of resin-based composite material |
| CN110873737A (en) * | 2018-09-03 | 2020-03-10 | 株式会社斯巴鲁 | Resin impregnation measurement system |
-
2011
- 2011-12-12 CN CN201120515654XU patent/CN202362267U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445470A (en) * | 2011-12-12 | 2012-05-09 | 中国科学院宁波材料技术与工程研究所 | Real-time monitoring method and device for curing process of resin-based composite material |
| CN110873737A (en) * | 2018-09-03 | 2020-03-10 | 株式会社斯巴鲁 | Resin impregnation measurement system |
| CN110873737B (en) * | 2018-09-03 | 2024-04-26 | 株式会社斯巴鲁 | Resin impregnation measurement system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |