CN103240893A - RTM (Resin transfer molding) technology for composite material molding - Google Patents
RTM (Resin transfer molding) technology for composite material molding Download PDFInfo
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- CN103240893A CN103240893A CN2013101320549A CN201310132054A CN103240893A CN 103240893 A CN103240893 A CN 103240893A CN 2013101320549 A CN2013101320549 A CN 2013101320549A CN 201310132054 A CN201310132054 A CN 201310132054A CN 103240893 A CN103240893 A CN 103240893A
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Abstract
The invention discloses an RTM (resin transfer molding) technology for composite material molding. The RTM technology for composite material molding comprises the following steps of: step one, placing glass fiber reinforcing materials in advance in a mold cavity of a mold; step 2, injecting a prepared resin glue solution into the mold cavity from an injection hole after a mold is closed and locked at certain temperature and pressure, and soaking the glass fiber reinforcing materials; and step 3, controlling the temperature and curing through a heating device in the mold, starting up the mold, and demolding. The RTM technology for composite material molding disclosed by the invention can effectively solve the problems of longer molding time as well as great product deformation in the prior art, and the technology is low in production cost, and is beneficial to popularization.
Description
Technical field
The present invention relates to a kind of RTM moulding process of composite, specifically provide a kind of heating apparatus of keeping specified temp, technology of utilizing temperature control technology that the curing of composite product is controlled of in mould, arranging.
Background technology
RTM (Resin Transfer Molding) is the abbreviation of resin transfer molding.It originates from the cold mould casting process of the fifties, the history in existing more than 40 year so far, but RTM technology really paid attention to by people, and obtain developing rapidly the history of having only the nearly more than ten years.Because therefore series of advantages such as this technology possesses efficient height, low, the good work environment of investment, energy consumption is low, Technological adaptability is strong gain great popularity, development rapidly.Be widely used in each field such as building, traffic, telecommunication, health, Aero-Space.Japan reinforced plastics association is recommended as two the most rising big technologies with RTM technology and pultrude process together.External composite circle prediction, RTM Study on Technology and application upsurge will be extended to the end of this century, and the RTM technology can be the same with present moulding process such as SMC at the beginning of 21 century, becomes one of the leading technology in FRP field.
Traditional composite RTM moulding process, be that the resin adhesive liquid injection is entered in the die cavity, under pressure, resin adhesive liquid flows in the reinforcing material prefabricated component and is delivered to each position, be full of die cavity and by the bubble in the gummosis emptying die cavity, solidify the moulding process of making product then.
RTM technology is a kind of technology that is suitable for medium batch process between hand paste technology and SMC technology.Because this technology is relatively younger, the problem that unavoidably has some difficulties technically and remain further to be solved, at present, the domestic and international ubiquitous difficult point of RTM technology and issue table be following four aspects now:
(1) resin is not ideal enough to the dipping of fiber, exists voidage higher in the goods, and the phenomenon of dried fiber is arranged;
(2) fiber content of goods lower (general about 50%);
(3) in large tracts of land, the baroque mold cavity, resin flow is unbalanced in the moulding process, and this dynamic process can't be observed, and more can not predict and control;
(4) the RTM technological forming time of condensation material moulding longer, the product deflection is bigger.
The main cause of above-mentioned difficult point and problem has: remaining in the material, holding back bubble, the dipping difference of resin etc., research according to SCS company, preceding Three Difficult Issues can effectively be solved by VA RTM (VA RTM) technology and double teeming mouth injection RTM technology, but the RTM technological forming time of condensation material moulding is longer, and big this difficult problem of product deflection is solved as yet preferably.
Summary of the invention
Problem in view of above-mentioned prior art exists has proposed the present invention.
Therefore, the technical problem to be solved in the present invention is that the RTM technological forming time that how to overcome condensation material moulding in the prior art is longer, the problem that the product deflection is bigger.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of RTM technology of composite material forming, it comprises the steps:
Step 1: in the die cavity of mould, place fiber glass reinforcement in advance;
Step 2: after the mold closing locking, the resin adhesive liquid for preparing under certain temperature and pressure, is injected die cavity from hand-hole, soak into glass fiber reinforced materials;
Step 3: after carrying out temperature control and solidify by the heating apparatus in the mould, Qi Mo, the demoulding.
As a kind of preferred version of the RTM technology of composite material forming of the present invention, wherein: certain temperature is 15 ° of C in the described step 2
-25 ° of C.
As a kind of preferred version of the RTM technology of composite material forming of the present invention, wherein: certain pressure is 0.05 in the described step 2
-0.15MPa.
As a kind of preferred version of the RTM technology of composite material forming of the present invention, wherein: to carry out the temperature of temperature control be 18 ° of C to heating apparatus in the described step 3
-30 ° of C.
The present invention utilizes temperature control technology that the curing of composite product is controlled by the heating apparatus of keeping specified temp is set in mould, to solve the problem that molding time is long and the product distortion is big.Adopt the RTM technology of composite material forming of the present invention can effectively solve the long and big difficult problem of product distortion of molding time in the prior art, and this explained hereafter cost is low, is beneficial to popularization.
Description of drawings
Fig. 1 is the RTM technological forming schematic diagram of composite material forming of the present invention.
Fig. 2 is the RTM process flow diagram of composite material forming of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
As Fig. 1
-Shown in 2, A, B material (resin system) is injected in the die cavity by measuring pump, soaks into reinforcing material (fiber system), after the mold closing locking then, with the resin adhesive liquid for preparing at 15 ° of C
-35 ° of C and 0.05
-0.25MPa under the pressure, inject die cavity from hand-hole, soak into glass fiber reinforced materials; After carrying out temperature control curing by the heating apparatus in the mould at last, Qi Mo, the demoulding.
In resin and auxiliary agent storehouse, extract resin and auxiliary agent, resin is carried out mixing weighing with pump distribute; In the fortifying fibre storehouse, take out fortifying fibre, carry out parison and prepare, then parison is handled; Carrying out mould simultaneously prepares, then the parison of handling well is utilized mould that raw material are carried out Quality Control, dress mould and mold closing, then the resin that mixing weighing is distributed carries out resin injection, then mould is carried out temperature control by the heating apparatus in the mould and solidifies, and opens mould, the demoulding at last.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. the RTM technology of a composite material forming, it is characterized in that: it comprises the steps:
Step 1: in the die cavity of mould, place fiber glass reinforcement in advance;
Step 2: after the mold closing locking, the resin adhesive liquid for preparing under certain temperature and pressure, is injected die cavity from hand-hole, soak into glass fiber reinforced materials;
Step 3: after carrying out temperature control and solidify by the heating apparatus in the mould, Qi Mo, the demoulding.
2. the RTM technology of composite material forming as claimed in claim 1, it is characterized in that: certain temperature is 15 ° of C in the described step 2
-25 ° of C.
3. the RTM technology of composite material forming as claimed in claim 1, it is characterized in that: certain pressure is 0.05 in the described step 2
-0.15MPa.
4. the RTM technology of composite material forming as claimed in claim 1 is characterized in that: to carry out the temperature of temperature control be 18 ° of C to heating apparatus in the described step 3
-30 ° of C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101320549A CN103240893A (en) | 2013-04-16 | 2013-04-16 | RTM (Resin transfer molding) technology for composite material molding |
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| CN2013101320549A CN103240893A (en) | 2013-04-16 | 2013-04-16 | RTM (Resin transfer molding) technology for composite material molding |
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| CN103240893A true CN103240893A (en) | 2013-08-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589137A (en) * | 2013-11-19 | 2014-02-19 | 大连天禄新材料有限公司 | Quickly molded polyurethane and hemp fiber composite plate based on HP-RTM (high pressure-resin transfer molding) technology |
| CN104708835A (en) * | 2014-11-06 | 2015-06-17 | 上海复合材料科技有限公司 | RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure |
| CN104792679A (en) * | 2015-04-08 | 2015-07-22 | 东华大学 | Porosity detection standard test block made of composite material with hollow microspheres as well as preparation method thereof |
| CN105058692A (en) * | 2015-09-02 | 2015-11-18 | 创意塑胶工业（苏州）有限公司 | Continuous wood fiber reinforced thermoset plastic composite and injection molding manufacturing process thereof |
| CN105670012A (en) * | 2014-11-21 | 2016-06-15 | 台山市爱达电器厂有限公司 | Anti-impact resin product and processing method thereof |
| CN115027107A (en) * | 2021-03-05 | 2022-09-09 | 通用汽车环球科技运作有限责任公司 | Reinforced composite assembly and method of making the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270096A (en) * | 2000-04-24 | 2000-10-18 | 国家建筑材料工业局玻璃钢研究设计院 | Resin transfer molding industrial production technology and equipment |
| CN102350800A (en) * | 2011-07-20 | 2012-02-15 | 江苏兆鋆新材料科技有限公司 | HP-RTM technology based method for molding automobile surface external decorative parts |
-
2013
- 2013-04-16 CN CN2013101320549A patent/CN103240893A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270096A (en) * | 2000-04-24 | 2000-10-18 | 国家建筑材料工业局玻璃钢研究设计院 | Resin transfer molding industrial production technology and equipment |
| CN102350800A (en) * | 2011-07-20 | 2012-02-15 | 江苏兆鋆新材料科技有限公司 | HP-RTM technology based method for molding automobile surface external decorative parts |
Non-Patent Citations (1)
| Title |
|---|
| 中国玻璃钢工业协会: "《玻璃钢简明技术手册》", 30 June 2004, article "树脂传递成型", pages: 85-88 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589137A (en) * | 2013-11-19 | 2014-02-19 | 大连天禄新材料有限公司 | Quickly molded polyurethane and hemp fiber composite plate based on HP-RTM (high pressure-resin transfer molding) technology |
| CN104708835A (en) * | 2014-11-06 | 2015-06-17 | 上海复合材料科技有限公司 | RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure |
| CN105670012A (en) * | 2014-11-21 | 2016-06-15 | 台山市爱达电器厂有限公司 | Anti-impact resin product and processing method thereof |
| CN104792679A (en) * | 2015-04-08 | 2015-07-22 | 东华大学 | Porosity detection standard test block made of composite material with hollow microspheres as well as preparation method thereof |
| CN105058692A (en) * | 2015-09-02 | 2015-11-18 | 创意塑胶工业（苏州）有限公司 | Continuous wood fiber reinforced thermoset plastic composite and injection molding manufacturing process thereof |
| CN115027107A (en) * | 2021-03-05 | 2022-09-09 | 通用汽车环球科技运作有限责任公司 | Reinforced composite assembly and method of making the same |
| US11780185B2 (en) | 2021-03-05 | 2023-10-10 | GM Global Technology Operations LLC | Reinforced composite assemblies and methods of manufacturing the same |
| CN115027107B (en) * | 2021-03-05 | 2024-03-22 | 通用汽车环球科技运作有限责任公司 | Reinforced composite component and method of making the same |
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Application publication date: 20130814 |