CN113831880A - Polymeric mineral gap filler and preparation method and use method thereof - Google Patents
Polymeric mineral gap filler and preparation method and use method thereof Download PDFInfo
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- CN113831880A CN113831880A CN202111153338.7A CN202111153338A CN113831880A CN 113831880 A CN113831880 A CN 113831880A CN 202111153338 A CN202111153338 A CN 202111153338A CN 113831880 A CN113831880 A CN 113831880A
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- primer
- epoxy resin
- polymeric mineral
- gap filler
- alumina
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 144
- 239000011707 mineral Substances 0.000 title claims abstract description 144
- 239000000945 filler Substances 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 239000003822 epoxy resin Substances 0.000 claims abstract description 93
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 93
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 85
- 239000003292 glue Substances 0.000 claims abstract description 69
- 150000001412 amines Chemical class 0.000 claims abstract description 60
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000000853 adhesive Substances 0.000 claims abstract description 38
- 230000001070 adhesive effect Effects 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 238000004140 cleaning Methods 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 27
- 239000000843 powder Substances 0.000 claims description 19
- -1 polytetrafluoroethylene Polymers 0.000 claims description 17
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 17
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 13
- 238000007788 roughening Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 description 77
- 239000011248 coating agent Substances 0.000 description 76
- 239000002131 composite material Substances 0.000 description 25
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 14
- 239000010410 layer Substances 0.000 description 8
- 244000137852 Petrea volubilis Species 0.000 description 7
- 239000012459 cleaning agent Substances 0.000 description 7
- 238000005498 polishing Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 238000004381 surface treatment Methods 0.000 description 7
- 238000005303 weighing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a polymeric mineral gap filler and a preparation method and a use method thereof, belonging to the technical field of bolt protection. The polymeric mineral underfill comprises: epoxy resin for primer and amine curing agent for primer; surface glue: amine curing agents for alumina-filled epoxy resin and surface glue; the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina-filled epoxy resin and the amine curing agent for the surface adhesive is 3-4: 2-2.5: 15-19: 7-9. The using method comprises the following steps: the primer mixture is firstly coated on the surface of an area to be coated, then the surface adhesive mixture is continuously filled on the primer mixture, the surface adhesive mixture is compacted and smoothed, and finally the polymeric mineral gap filler is coated and used through curing treatment. The polymeric mineral caulking agent has the advantages of good plasticity and high bonding strength.
Description
Technical Field
The invention belongs to the technical field of bolt protection, and relates to a polymeric mineral gap filler, and a preparation method and a use method thereof.
Background
Protection and shock attenuation technique of aeroengine bolt all have been the key technique of engine design and manufacturing, and big bypass ratio aeroengine is because of its size is big, the rotational speed is fast, and thrust is big, and the engine is when working for a long time, easily causes the fretting wear of bolt because of vibrations, and then breaks off and influences the performance and the life-span of engine. At present, the adopted glue joint protection technology needs to be coated on threads or in threaded holes, and has the defects of difficult solidification, easy flowing, difficult cleaning and difficult disassembly of parts.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a polymeric mineral gap filler, a preparation method and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the invention discloses a polymeric mineral gap filler, which comprises base glue and surface glue; the primer includes: epoxy resin for primer and amine curing agent for primer; the surface glue comprises: amine curing agents for alumina-filled epoxy resin and surface glue; wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina-filled epoxy resin and the amine curing agent for the surface adhesive is 3-4: 2-2.5: 15-19: 7-9.
Preferably, in the primer, the epoxy resin for the primer is any one of E44 or E51.
Preferably, in the alumina-filled epoxy resin, the epoxy resin for the surface glue is any one of E44 or E51, and the alumina is powder with the particle size of 120-220 meshes; wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 10-25: 50-60.
The invention discloses a preparation method of the polymeric mineral gap filler, which comprises the following steps: uniformly mixing epoxy resin for the primer and an amine curing agent for the primer to prepare a primer mixture without blocky substances; uniformly mixing alumina powder and epoxy resin for surface glue to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin and an amine curing agent for surface glue to prepare a surface glue mixture without blocky substances and bubbles.
Preferably, the mixing preparation temperature of the primer mixture is 15-21 ℃.
Preferably, the mixing preparation temperature of the dough mixture is 15-21 ℃.
The invention discloses a using method of the polymeric mineral gap filler, which comprises the following steps: adopting protection treatment on the surface of the part around the area to be coated; the method comprises the following steps of firstly carrying out roughening treatment on the surface of a region to be coated, then carrying out cleaning treatment, and then carrying out hole plugging treatment on bolt holes in the region to be coated; the primer mixture is firstly coated on the surface of an area to be coated, then the surface adhesive mixture is continuously filled on the primer mixture, the surface adhesive mixture is compacted and smoothed, and finally the polymeric mineral gap filler is coated and used through curing treatment.
Preferably, plugging is performed by installing a bolt plugging device in the bolt hole.
Further preferably, the bolt hole plugging device is made of polytetrafluoroethylene material.
Preferably, the operating parameters of the curing process include: standing at 18-23 ℃ for 48 h.
Preferably, the operating parameters of the curing process include: and standing at 23-35 ℃ for 24 h.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a polymeric mineral gap filler, which can be used for preparing a wear-resistant coating for preventing fretting wear of a bolt through reasonable material and proportion selection.
The invention also discloses a preparation method of the polymeric mineral gap filler, and the coating has the characteristics of environment-friendly materials, easy process realization, environment resistance of the coating and the like, so the polymeric mineral gap filler has the advantages of convenience and can be suitable for being used as a wear-resistant coating in a complex environment.
Compared with the existing bolt protection technology, the method does not need a large-scale air circulation oven, and solves the problems that the adhesive is difficult to cure, easy to flow and clean and the bolt is difficult to disassemble by adopting a bolt hole plugging device and molding the polymeric mineral gap filler at room temperature.
In conclusion, the invention discloses a polymeric mineral gap filler, a preparation method and a use method thereof, a wear-resistant coating for preventing fretting wear of a bolt can be prepared through material selection and process route selection, and the coating can be judged to have excellent technical characteristics of mould prevention, corrosion prevention and the like through verification of related environmental tests. Therefore, the polymeric mineral gap filler disclosed by the invention can realize the advantages of good plasticity and high bonding strength of the polymeric mineral gap filler by adding a proper amount of additives such as aluminum oxide powder based on the preparation principle of a composite coating.
Drawings
FIG. 1 is a schematic partial view of the use of a polymeric mineral underfill of the present invention;
fig. 2 is a schematic structural view of a bolt hole plugging device made of teflon according to the present invention.
Wherein: 1-a composite gasket; 2-bolt hole plugging device; 3-polymeric mineral caulking; 4-fan case.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a polymeric mineral gap filler which can be used for protecting bolts on the inner surface of a fan case, is simple and efficient in use method, has low requirements on coating and curing processes, and can be applied to a wide operation construction environment.
The invention is described in further detail below with reference to the accompanying drawings:
the invention relates to a polymeric mineral gap filler, a preparation method thereof and a specific process flow of a using method thereof, which comprises the following steps: preparing and protecting, surface treating, assembling a tool, preparing a primer of a polymeric mineral gap filler, coating the primer, preparing a surface adhesive of the polymeric mineral gap filler, coating the surface adhesive, curing the polymeric mineral gap filler, cleaning and disassembling the tool.
The preparation and use process method of the polymeric mineral gap filler applied to the protection of the bolts on the inner surface of the fan casing comprises the following steps:
(1) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(2) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(3) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(4) Preparation of polymeric mineral caulking agent: the polymeric mineral gap filler is composed of a primer and a surface adhesive, wherein the primer is composed of epoxy resin and an amine curing agent, the surface adhesive is composed of alumina filled epoxy resin and an amine curing agent, and the primer and the surface adhesive are respectively prepared according to requirements before use.
Wherein, aiming at the preparation of the primer:
weighing the epoxy resin for the base glue and the amine curing agent for the base glue according to the mass ratio of (3-4) to (2-2.5), fully stirring the epoxy resin and the amine curing agent for the base glue by using tools such as a glass rod and the like after weighing until no blocky substance exists in the mixture, and considering the trial period of the base glue of the polymeric mineral gap filler, preparing the base glue at 15-21 ℃. In the primer, the epoxy resin is any one of E44 or E51; the amine curing agent for the primer is any one of E44 or E51.
Wherein, aiming at the preparation of the surface glue:
uniformly mixing aluminum oxide powder and epoxy resin for face glue in a mass ratio of (10-25) to (50-60) to obtain an aluminum oxide filled epoxy resin, weighing the aluminum oxide filled epoxy resin and the amine curing agent for face glue in a mass ratio of (15-19) to (7-9), fully stirring the aluminum oxide filled epoxy resin and the amine curing agent for face glue by using a glass rod and other tools until lumps and bubbles in the mixture, and considering the trial period of the polymerized mineral gap filler face glue, the preparation is carried out at the temperature of 15-21 ℃. In the surface glue, alumina is filled in epoxy resin, and the epoxy resin for the surface glue is any one of E44 or E51; the amine curing agent for the surface glue is any one of E44 or E51; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
(5) Application of polymeric mineral caulking agent: the prepared polymeric mineral caulk 3 primer and topcoat were applied separately using a non-linting brush or squeegee in the area to be coated as shown in figure 1.
The method comprises the following specific steps:
and (3) coating a thin layer of the prepared primer of the polymeric mineral gap filler 3 at the position shown in the attached drawing 1 by using tools such as a hairbrush or a scraper without hair falling, wherein the thickness of the thin layer is about 3-8 mu m.
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(6) Controlling coating process parameters: because the surface glue of the polymeric mineral gap filler 3 is in a room temperature curing type, the surface layer is made into a columnar gap filler before coating, the coating is finished in the specified active period of the primer and the surface glue of the polymeric mineral gap filler, and the final thickness of the polymeric mineral gap filler 3 is equal to that of the composite gasket 1.
(7) Curing of polymeric mineral caulk: after the polymeric mineral underfill is applied and without skip coating, it is cured as desired under specified ambient conditions.
And (3) placing the polymer mineral gap filler at the temperature of (18-23) DEG C for 48h or at the temperature of (23-35) DEG C for 24h after the polymer mineral gap filler is coated and has no leakage coating.
(8) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
And before the polymeric mineral gap filler is coated and cured, cleaning the gap filler on the inner surface of the fan case and the surface of the composite gasket, which does not need to be coated, by dipping acetone with a rag, and after the polymeric mineral gap filler is cured, cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case by using a metal sheet.
(9) Removing the assembly tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is taken out of the bolt hole, and the bolt hole plugging device is prevented from being collided when taken out, so that the polymeric mineral gap filler is prevented from being damaged.
The present invention is described in further detail below with reference to specific examples:
example 1
Preparation of a polymeric mineral caulking agent:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer at 15 ℃ to prepare a primer mixture without blocky substances; under the condition of 15 ℃, alumina powder and epoxy resin for surface glue are uniformly mixed to obtain alumina filled epoxy resin, and the alumina filled epoxy resin and the surface glue are uniformly mixed by an amine curing agent to prepare a surface glue mixture without blocky substances and air bubbles.
In the primer, the epoxy resin for the primer is E44, and the amine curing agent for the primer is E44. In the surface glue, the epoxy resin filled with alumina is E44, and the amine curing agent for the surface glue is E44.
Wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina-filled epoxy resin and the amine curing agent for the surface adhesive is 3:2:15: 7.
Wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 10: 50; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
Use of polymeric mineral caulk:
(a) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(b) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(c) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(d) Application of polymeric mineral caulking agent:
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(e) Curing of polymeric mineral caulk: after the polymeric mineral underfill was applied and without skip coating, it was left at 18 ℃ for 48 h.
(f) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
Example 2
Preparation of a polymeric mineral caulking agent:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer at 21 ℃ to prepare a primer mixture without blocky substances; uniformly mixing alumina powder and epoxy resin for the surface adhesive at 21 ℃ to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin and the amine curing agent for the surface adhesive to prepare a surface adhesive mixture without blocky substances and bubbles.
In the primer, the epoxy resin for the primer is E51, and the amine curing agent for the primer is E51. In the surface glue, the epoxy resin filled with alumina is E51, and the amine curing agent for the surface glue is E51.
Wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina-filled epoxy resin and the amine curing agent for the surface adhesive is 4:2.5:19: 9.
Wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 15: 50; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
Use of polymeric mineral caulk:
(a) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(b) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(c) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(d) Application of polymeric mineral caulking agent:
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(e) Curing of polymeric mineral caulk: after the polymeric mineral underfill was applied and without skip coating, it was left at 23 ℃ for 48 h.
(f) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
Example 3
Preparation of a polymeric mineral caulking agent:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer at 18 ℃ to prepare a primer mixture without blocky substances; uniformly mixing alumina powder and epoxy resin for the surface adhesive at 18 ℃ to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin and the amine curing agent for the surface adhesive to prepare a surface adhesive mixture without blocky substances and bubbles.
In the primer, the epoxy resin for the primer is E51, and the amine curing agent for the primer is E51. In the surface glue, the epoxy resin filled with alumina is E44, and the amine curing agent for the surface glue is E44.
Wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina-filled epoxy resin and the amine curing agent for the surface adhesive is 3.2:2.2:16: 8.
Wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 20: 55; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
Use of polymeric mineral caulk:
(a) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(b) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(c) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(d) Application of polymeric mineral caulking agent:
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(e) Curing of polymeric mineral caulk: after the polymeric mineral underfill was applied and without skip coating, it was left at 23 ℃ for 24 h.
(f) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
Example 4
Preparation of a polymeric mineral caulking agent:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer at 16 ℃ to prepare a primer mixture without blocky substances; uniformly mixing alumina powder and epoxy resin for the surface adhesive at 16 ℃ to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin and the amine curing agent for the surface adhesive to prepare a surface adhesive mixture without blocky substances and bubbles.
In the primer, the epoxy resin for the primer is E44, and the amine curing agent for the primer is E44. In the surface glue, the epoxy resin filled with alumina is E51, and the amine curing agent for the surface glue is E51.
Wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina filled epoxy resin and the amine curing agent for the surface adhesive is 3.5:2.3:17.5: 7.5.
Wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 25: 50; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
Use of polymeric mineral caulk:
(a) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(b) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(c) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(d) Application of polymeric mineral caulking agent:
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(e) Curing of polymeric mineral caulk: after the polymeric mineral underfill was applied and without skip coating, it was left at 35 ℃ for 24 hours.
(f) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
Example 5
Preparation of a polymeric mineral caulking agent:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer at the temperature of 20 ℃ to prepare a primer mixture without blocky substances; under the condition of 20 ℃, uniformly mixing alumina powder with epoxy resin for surface glue to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin with an amine curing agent for the surface glue to prepare a surface glue mixture without blocky substances and bubbles.
In the primer, the epoxy resin for the primer is E44, and the amine curing agent for the primer is E44. In the surface glue, the epoxy resin filled with alumina is E51, and the amine curing agent for the surface glue is E51.
Wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina filled epoxy resin and the amine curing agent for the surface adhesive is 3.8:2.4:18.5: 8.5.
Wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 10: 60; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
Use of polymeric mineral caulk:
(a) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(b) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(c) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(d) Application of polymeric mineral caulking agent:
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(e) Curing of polymeric mineral caulk: after the polymeric mineral underfill was applied and without skip coating, it was left at 20 ℃ for 48 h.
(f) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
Example 6
Preparation of a polymeric mineral caulking agent:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer at the temperature of 17 ℃ to prepare a primer mixture without blocky substances; under the condition of 17 ℃, uniformly mixing alumina powder with epoxy resin for surface glue to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin with an amine curing agent for surface glue to prepare a surface glue mixture without blocky substances and bubbles.
In the primer, the epoxy resin for the primer is E51, and the amine curing agent for the primer is E51. In the surface glue, the epoxy resin filled with alumina is E51, and the amine curing agent for the surface glue is E51.
Wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina filled epoxy resin and the amine curing agent for the surface adhesive is 3.7:2.5:17: 9.
Wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 25: 60; the alumina is powder with the grain diameter of 120 meshes to 220 meshes.
Use of polymeric mineral caulk:
(a) preparation and protection: protective measures should be taken against the composite material shim 1 and the abradable coating on the inner surface of the fan case 4.
(b) Surface treatment: the method comprises the steps of roughening the area to be coated on the inner surface of the fan case 4 by adopting a (120-220) mesh sand paper polishing method to improve the bonding strength, and cleaning a preparation container, a coating tool, the area to be coated on the inner surface of the fan case 4, an assembly tool (comprising a bolt hole plugging device 2 processed by polytetrafluoroethylene) and the like by adopting acetone or non-halogenated organic cleaning agents before the polymeric mineral gap filler is coated so as to prevent surface dirt from influencing the bonding strength and the bonding quality of the polymeric mineral gap filler, the inner surface of the fan case 4 and bolts.
(c) Assembling a tool: the bolt hole plugging device 2 processed by polytetrafluoroethylene is arranged in a bolt hole, so that the situation that the bolt hole is plugged by a polymeric mineral gap filling agent to influence bolt assembly is avoided.
(d) Application of polymeric mineral caulking agent:
Coating of polymer mineral caulking agent 3 face glue:
firstly, coating the surface glue of the prepared polymeric mineral gap filler 3 into a cylindrical coating block with the thickness of 5-8 mm, then coating the molded cylindrical coating block on the surface of the primer by adopting a scraper, compacting and leveling, wherein the thickness of the polymeric mineral gap filler 3 is equal to that of the composite material gasket 1 adhered to the inner surface of the fan case 4.
(e) Curing of polymeric mineral caulk: after the polymeric mineral underfill was applied and without skip coating, it was left at 30 ℃ for 24 hours.
(f) Cleaning: and cleaning the redundant polymeric mineral gap filler on the inner surface of the fan case 4 and the surface of the composite gasket 1.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A polymeric mineral caulking agent, which is characterized by comprising base glue and surface glue;
the primer includes: epoxy resin for primer and amine curing agent for primer; the surface glue comprises: amine curing agents for alumina-filled epoxy resin and surface glue;
wherein the mass ratio of the epoxy resin for the primer, the amine curing agent for the primer, the alumina-filled epoxy resin and the amine curing agent for the surface adhesive is 3-4: 2-2.5: 15-19: 7-9.
2. A polymeric mineral underfill as claimed in claim 1 wherein the epoxy resin for the underfill is any one of E44 or E51.
3. The polymeric mineral caulking agent according to claim 1, wherein in the alumina-filled epoxy resin, the epoxy resin for the face glue is any one of E44 or E51, and the alumina is powder with a particle size of 120-220 meshes;
wherein the mass ratio of the aluminum oxide to the epoxy resin for the surface adhesive is 10-25: 50-60.
4. The method for preparing a polymeric mineral caulking agent of any one of claims 1 to 3, comprising the steps of:
uniformly mixing epoxy resin for the primer and an amine curing agent for the primer to prepare a primer mixture without blocky substances; uniformly mixing alumina powder and epoxy resin for surface glue to obtain alumina filled epoxy resin, and uniformly mixing the alumina filled epoxy resin and an amine curing agent for surface glue to prepare a surface glue mixture without blocky substances and bubbles.
5. The method according to claim 4, wherein the mixing preparation temperature of the primer mixture is 15 to 21 ℃.
6. The preparation method according to claim 4, wherein the mixing preparation temperature of the dough mixture is 15-21 ℃.
7. The use method of a polymeric mineral gap filler as claimed in any one of claims 1 to 3 or a polymeric mineral gap filler prepared by the preparation method as claimed in any one of claims 4 to 6, characterized by comprising the following steps:
adopting protection treatment on the surface of the part around the area to be coated; the method comprises the following steps of firstly carrying out roughening treatment on the surface of a region to be coated, then carrying out cleaning treatment, and then carrying out hole plugging treatment on bolt holes in the region to be coated;
the primer mixture is firstly coated on the surface of an area to be coated, then the surface adhesive mixture is continuously filled on the primer mixture, the surface adhesive mixture is compacted and smoothed, and finally the polymeric mineral gap filler is coated and used through curing treatment.
8. Use according to claim 7, wherein plugging is performed by installing a bolt plugging device in the bolt hole.
9. Use according to claim 8, wherein the bolt hole plugging device is made of a polytetrafluoroethylene material.
10. Use according to claim 7, wherein the operating parameters of the curing process comprise: standing for 48 hours at the temperature of 18-23 ℃;
or standing at 23-35 ℃ for 24 h.
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| CN101781508A (en) * | 2010-01-18 | 2010-07-21 | 中国海洋石油总公司 | Epoxy protective coating system for high-power nuclear power station |
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| CN112480787A (en) * | 2020-12-16 | 2021-03-12 | 中国科学院兰州化学物理研究所 | Polymer mineral gap filler for engine containment ring and preparation method thereof |
| CN213206279U (en) * | 2020-08-27 | 2021-05-14 | 承龙科技(嘉兴)有限公司 | Pre-tightening anti-loose combined nut |
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| CN101781508A (en) * | 2010-01-18 | 2010-07-21 | 中国海洋石油总公司 | Epoxy protective coating system for high-power nuclear power station |
| JP2014069400A (en) * | 2012-09-28 | 2014-04-21 | Jfe Steel Corp | Polyethylene-coated steel material and epoxy resin primer layer forming material |
| CN213206279U (en) * | 2020-08-27 | 2021-05-14 | 承龙科技(嘉兴)有限公司 | Pre-tightening anti-loose combined nut |
| CN112480787A (en) * | 2020-12-16 | 2021-03-12 | 中国科学院兰州化学物理研究所 | Polymer mineral gap filler for engine containment ring and preparation method thereof |
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Application publication date: 20211224 |