TW562741B - Honeycomb sealing and composite structure using the same - Google Patents

Abstract

Honeycomb sealing and composite structure using the same, which seals a honeycomb as a core of the composite structure by using a thermalplastic film directly and combines the sealed honeycomb core with the other composite materials for the composite structure together, in particular, using resin transfer molding (RTM) to form the composite structure; the invention can reduce the time required for sealing the honeycomb core and the weight of whole composite structure without affecting the original structural characters of composite structure.

Description

562741

Case No. 9013141Q V. Description of the invention (1) "Overview of the Invention" The present invention is a "honeycomb seal and the use of a structure that includes the use of a thermoplastic plastic film to seal the honeycomb heart". The honeycomb heart made of the film has a honeycomb The use of the invented process can greatly shorten the processed parts of the honeycomb heart sealing film, and the military can also reduce the weight of the composite structural parts made of the honeycomb heart that has been filmed. The amount of composite structural parts is indeed :: It has its obvious effect, and can accurately enhance and expand the composite material; "Background of the Invention" That is, the court is the same as the early hair material, but it is not seen due to the general trend of the people. Therefore, aviation uses its polar moon dagger to change the composite material from the traditional composite material, which is advancing to the resin or the phenomenon of technology, and the means of living, tend to be, and the composite material structure, each of the efforts to reduce weight requirements, Therefore, in the metal material already common material structure, such as structural parts and the other peak of the honeycomb heart, but other materials such as bee> cereals to ensure that the honeycomb space develops aerospace equipment. A can be reduced, but this requires a stronger binding both aircraft such as corrugated paper, the hollow core nest, without causing inter-heavy to have multiple beneficial is the mechanical aspect of the system while the light items, but also the degree; plate and bees. In the development of human beings, the amount of chased parts has been increased, and one of the major tasks of lightweighting is the use of the core of the premise, which has almost no structural strength and is still light. 'Lightweight technology is easy to infiltrate complex Or if the weight is not allocated, it will be 1 ship in advance

Page 4 562741 Case No. 90131419 V. Description of the invention (2) The honeycomb space is sealed or filled in different ways. For example, the technology disclosed by US Patent No. 5567499 of the United States Boeing Company and European Patent EP 7 8 6 3 3 0 A 2 of Hexcel Company is that a layer of composite material or an insulation film is combined with a layer of glue on the upper and lower sides of the honeycomb. "Adhesive" closes and seals the honeycomb space; and the technology disclosed by another US patent No. 55 6 95 08 of the United States Boeing Company is to fill the honeycomb space with foam material, so that the honeycomb space is filled with foam material. , Without the need to seal the film, you can use other composite materials to form structural parts; but both have to be complicated. The overall production cost is extremely uneconomical, and the film technology: to 3 hours or more, if temporary access is needed When the hive heart is made, it is more alive.] Inexplicable things. < F has nothing to do with this. In view of this, the research and integration of the structure of the present invention are consistent. Individuals have long required composite materials for honeycomb composite structures. ^, think, and invented a kind that can be used in Simplify the existing honeycomb heart-sealing, sealing, and using the composite material structure, which can be completed within, and make the complicated work process of the force ^ ^ only one hour, and make the use of the bee ^ Feng Fan The finished honeycomb heart is in constant availability, and can be accurately lifted and the weight of the composite material structure is reduced, which is stronger than the practicality of using the composite material of the majority of the composite material. "The honeycomb seal makes it more practical in application. "Objective of the Invention" For this reason, the main use of this invention is the composite material structure, which is: ^ is to provide a honeycomb seal with the rain surface, heating it to the front: ..., plastic plastic film stickers Attached to the hive heart $ 5 pages 562741 _ case number 90131419 1 丨 year &month; month / day correction_ 5. Description of the invention (3) Sealed, the hive heart has been sealed at this time and is ready for use; Heart, using resin injection molding The composite fiber structure is laid directly on the upper and lower sides of the honeycomb core. When various types of composite materials are processed subsequently, such as resin injection, the resin will not penetrate into the honeycomb space. The weight of the completed composite structure is heavier than the Boeing process described above. Light, because the weight of the film layer is reduced, but the strength is still the same. Another object of the present invention is to speed up the sealing time of the honeycomb heart, reduce its complicated processes, reduce the cost of sealing, reduce energy consumption, and The sealed honeycomb heart can be used at any time. "Detailed Description of the Invention" In order to enable the reviewing committee to further understand the present invention, a preferred embodiment is given below, in conjunction with the illustrations and drawing numbers, the present invention The details of the composition and the effect achieved are as follows: "Simplified description of the drawing" The first picture is a schematic diagram of the honeycomb structure of the American Boeing Company. The second picture is the honeycomb structure of the American Boeing Company. Combination diagram. The third diagram is an exploded diagram of the honeycomb structure of the present invention. The fourth diagram is an assembly diagram of the honeycomb structure of the present invention. FIG based honeycomb structure of the present invention a combination of a schematic cross-sectional view of FIG .. Sixth based honeycomb structure of the present invention in a schematic view of a resin molding injection molding station transfected ..

Page 6 562741 _Case No. 90131419 1 丨 Year & Month: Amendment of the fifth month 5. Description of invention (4) "Illustration of drawing number"

1 0 • • Boeing structural parts 1 1 • • Honeycomb heart 1 2 • • Sheet rubber 1 3 • • Film 1 4 • • Fiber reinforcement layer 2 0 • • Composite structural part 2 1 • • Honeycomb heart 2 2 • • Thermoplastic Plastic sealing film 2 3 • • Composite reinforcement layer 3 0 • • Mould 3 1 • • Filling glue V "Specific embodiment description" Please refer to the first and second figures, which are proposed by the Boeing Company in the US patent A composite material structure 10 with a honeycomb heart is mainly used to seal the space of the honeycomb heart with a film and a layer of glue on both sides of the honeycomb heart 1 1 so that the resin does not penetrate into the honeycomb space when the fiber reinforcement layer 13 is formed. Middle 0 Please also refer to the third, fourth, and fifth figures, which are the composite material structure 20 with a honeycomb core of the present invention. The third figure shows the honeycomb core 21 and the thermoplastic plastic film 22 and the composite material reinforcement. Exploded view of layer 2 3, from this figure

Page 7 562741 First Amendment No. 90131419 1 丨 A > Description of the Invention (5) The sealing process of the present invention is divided into the following stages: The next or 2 knots are combined to form an intentional 1 nest into the tree (a) The thermoplastic plastic sealing film 22 is attached on both sides; + Record 6 (b) The thermoplastic plastic sealing film 22 is heated to the melting temperature; first, then the heating is performed; (c) the thermoplastic is pressed The plastic sealing film 2 2 makes the two sides of the bean nest heart 1 2 to seal the honeycomb hole of the honeycomb heart 2 i; The component ^ is cooled to complete the sealing process. 'Complete the composite material with the honeycomb heart reinforced layer 2 3 can be at any time The disk has been lean, and --- component 2 0. Through τ, the composite honeycomb material that has been sealed in the honeycomb heart = the picture is; the synthetically completed material with a sealed honeycomb heart 2 !, 3, 3D schematic diagram of the Ji member; another cross-section schematic diagram of the flute 2 0 It can be clearly seen that ^ is shown as "Structural Thermoplastic Plastic Seal-Film 2 2 Sealed and Restored": The nest core 2 1 has a strong structure of composite material with a sealed honeycomb core 2 = the present invention Only the thermoplastic plastic sealing film 22 2 μ μ is clearly issued, as shown in the picture and the second picture, the honeycomb heart 2 1 is shown, but it is not clear that Cao Dantu ^ ^ χ… 1 2, so that is It is clear that too = lighter than the structural parts manufactured by Boeing ^ Division process! 〇. Heart dagger mold 30, in a sealed thermoplastic with = tree fiber, then _ 口 心

$ 8 pages

r. The composite material structure costing 70% after the invention is completed? n L _Μ honeycomb heart 2! has been thermoplastic: two = 562741 5. Description of the invention (6) " Sealed, the resin will not penetrate into the honeycomb hole of the honeycomb heart 2 i, which can ensure the completed composite structural member 2 〇 There will be no uneven weight and it will not affect the strength of its original design. The honeycomb heart 21 of the present invention can be stored first and sealed at any time after being sealed with a thermoplastic plastic sealing film 22. The sealing effect remains unchanged, which can greatly improve the molding time of the composite structural parts. Can be used in other composite materials processes, such as winding forming, prepreg lamination forming, wet lamination forming, etc. The same can reduce the preparation time, so that the use of composite materials can be extended to a wider range of applications, sincere and practical Sex. According to the actual take of thermoplastic polyurethane (Thermoplastic Polyurethane, TPU) film (Dingji Chemical Company, product name FT5086t), its thickness has 0.4mm and 1. Omm two, placed in 10mm thick Synthetic fiber honeycomb (Nomex, European Euro-Composite product, ECA 1 / 8-3.0). After the vacuum sealing process, a vacuum is applied to give a pressure of 1 atmosphere (14 · 7ps i), and then put it in the oven. After being sealed by heating, the sealed honeycomb test piece was taken out, and a flatwise tensile bonding test (Flatwise Tension Test) was performed according to ASTM C 2 97 to evaluate the bonding strength between the sealing film and the honeycomb heart; for the sake of comparison, another Carbon fiber prepreg tape (product of British Advanced Composite Group, LTM45) and ^: hollow structure film adhesive AF-163-2K (product of 3M company in the United States) at 120 ° c / l hour / 1 4. 7 psi Chenghua sealed the honeycomb heart and made a test piece of the control group. Glue test results are shown in Table 1.

Page 9 562741 Case No. 90131419 "Year > Month < Revision V. Description of Invention (7) Table 1 Ί Test piece number Sealing film Sealing process conditions I Adhesive strength I (ps i) hl · l · Control group 1 ------- | 1 2 0 ° C / 1 h + 1 369 -H 1 + ------ | TPU, 0 · 4mm thick + 1 160 ° C / 30min + 1 220 -H 1 + ------ | TPU, 0 · 4mm thick + 1 160 ° C / 15min + 1 210 one H 1 + ------ | TPU, 0 · 4_ thick + 1 150 ° C / 30min + 1 185 -H 1 +-l · 4 l · I TPy, 0 · 4mm thick | 1 5 0 ° C / 1 5m in-+ ----- 190 + ten

H

H 5 I TPU, 1.0 mm thick | 1 50 ° C / 1 5m i n | 2 5 0 |

I______I________I________I______I As can be seen from Table 1, the bonding strength of the sealing film to the honeycomb heart is not affected by the thickness of the sealing film, and the heat-sealing time has little effect on the bonding strength. The point is that the bonding strength of the control group represents general knowledge The technique uses a sheet of glue to seal the honeycomb heart, and the sealing method proposed by the present invention can reach more than 50% of the standard strength of the control group, and compared with the European patent EP786 33 0A2, the film is used to seal the insulation film. The bonding strength is 10-80Opsi. The present invention is also strong enough to be comparable to structural applications.

Page 10 five, degree, ^ the present invention refers to a ^ as mentioned above, the hair can be applied to a variety of ΐ: ΐFront nest heart, can be large Γ composite composite compound Ϊ second force ° fast composite structure; For practicality, we also use "sincerely meet the invention needs to be identified, the above ^ technical principles, if the effect can not exceed the scope of the present invention, the method < provide Ming Hive sealing compound material to improve the existing materials The sheet or isolation is used as a procedure to form the piece at a rate of formation. The description of the patent application is to describe the structure of the present invention and the figure-¾. 0θ 〇 means that the glue with good modification and the honeycomb core layer using the honeycomb seal The simple seal of the bee, and can be constructed without ever. The strength of invention is covered by the desired formula. The composite material structure, especially the composite material structure produced by the manufacturing process, must be sealed or infused with honeycomb membrane technology to shorten the forming. The exact promotion and expansion are seen in the books and public embodiments and the changes that are carried out. 'All should

Claims (1)

562741 Case number 9013141 = 6. Scope of patent application, 1. Two kinds of honeycomb sealing process, the process is: (a) attaching thermoplastic plastic sealing film to the honeycomb core; (b) heating the thermoplastic fin mu 'pressurized and reheated' field ㈣ To—almost "temperature; or u) pressurize the thermoplastic plastic sealing film, and then complete the film sealing process after cooling; the honeycomb" mouth, into 2, according to the process described in the patent claim S1, where the honeycomb can be Shao, synthetic fibers (N) 〆,. UNomex), paper, carbon fiber or glass fiber. The process described in item 1 above, wherein the thermal Pol is coated with a thermoplastic polyurethane (The-o-Uc Polyurethane, TPU) film. Sexual plastic seal: Please refer to the process described in item 1 of the patent scope, in which thermoplastic production is ^ η. , ~ ,,,,, and plastic polyurethane film, the heating temperature of the film to 180, and the heating time is 1 minute to 60 minutes. According to the process described in item 4 of the scope of the patent application, the heating temperature of the thermoplastic clock to / 0 minutes is 140 ° C to 170 ° c, and the heating time is 5 minutes. The thermoplastic polyurethane ^ 1155 has a film thickness of 0.1 to 2.0. Page 12 562741 Amendment No. 90131419 6. Scope of patent application 7. A composite material structure with a honeycomb heart, which mainly uses the sealed honeycomb heart described in item 1 of the scope of patent application, and uses the composite material molding method to convert the honeycomb The heart is combined with other composite materials to form a composite material structure with a honeycomb heart. 8. According to the composite material molding method described in item 7 of the scope of the patent application, it can be resin transfer injection molding, winding molding, prepreg lamination molding, wet lamination molding and other processing methods. 9. The composite material structure with honeycomb according to item 7 or item 8 of the scope of patent application, which is used for aviation parts, road vehicle parts, automobile parts, and ship parts. Page 13