CN107932817A - A kind of bursting epoxy foam plastics Fragile cap and preparation method thereof - Google Patents
A kind of bursting epoxy foam plastics Fragile cap and preparation method thereof Download PDFInfo
- Publication number
- CN107932817A CN107932817A CN201711223614.6A CN201711223614A CN107932817A CN 107932817 A CN107932817 A CN 107932817A CN 201711223614 A CN201711223614 A CN 201711223614A CN 107932817 A CN107932817 A CN 107932817A
- Authority
- CN
- China
- Prior art keywords
- lid
- foam plastics
- bursting
- fragile cap
- epoxy foam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F3/00—Rocket or torpedo launchers
- F41F3/04—Rocket or torpedo launchers for rockets
- F41F3/077—Doors or covers for launching tubes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The present invention relates to a kind of bursting epoxy foam plastics Fragile cap, belongs to projectile storage and transportation lift-off technology field.The Fragile cap includes：Lid and lid frame, lid and lid frame are connected by pressing plate with screw, and are filled in contact surface with sealant.Fragile cap shape is in dome-shaped, its inner surface radial direction and broadwise are provided with a certain number of stress grooves, and the center of radial direction cross-like stress groove and broadwise stress groove overlaps.Fragile cap bulk material is epoxy foam plastics, compared with traditional polyurethane foam plastics, has more preferable load performance, weather-proof, ageing-resistant performance and longer service life.Bursting epoxy foam plastics Fragile cap of the present invention has light-weight, simple in structure, non-maintaining, high reliability, by stress groove orientation damage to the terminal under MISSILE LAUNCHING effect of impact, do not damage missile-borne radome, shattering process is reliable and stable, and the missile weapon system transmitting reaction time is greatly improved.
Description
Technical field
The present invention relates to projectile storage and transportation lift-off technology field, be specially a kind of bursting epoxy foams Fragile cap and its
Preparation method.
Background technology
MISSILE LAUNCHING case lid is the important component in guided missile storage and emission system, is to influence guided missile fast reaction energy
One of an important factor for power.At present, the scheme of uncapping launched a guided missile in a manner of launching tube mainly has mechanical cap-opening mechanism, explosion
Lid and three kinds of technical solutions of Fragile cap.
Traditional guided missile launcher generally uses mechanical open lid mechanism or explosion lid, such as United States Patent (USP) US
Pat.397000, US Pat.4333381.But there are operation to waste time for both types launching box cover, quick-reaction capability
It is low, and is easily there is major injury, electronic component and priming system and may be failed due to long-term storage in mechanical structure, or explosion time production
Raw shock wave can injure the shortcomings of electronic component in nose of missile, seriously affect guided missile system efficiency.Domestic and international patent US
Pat.4498268, CN 1844839A, CN103913098 and CN 104864773A etc. have invented composite structure Fragile cap,
It can bear certain well-distributed pressure and can be broken under smaller concentrated force along desired guiding trajectory, when improving missile reaction
Between, but composite material Fragile cap lay-up process is complicated, need to design special construction and ensure breaking effect, and processing quality stability
More difficult control.Patent CA 104913692A and CN 105017757A are disclosed using rigid polyurethane foam as bulk material
Fragile cap, be molded with chemical blowing process, have the advantages that easy to operate, short molding cycle and cost are low etc., but polyurethane foam
Plastics high-low temperature resistant, weather-proof and ageing-resistant performance are poor, have impact on the service life and maintainability of Fragile cap.
Therefore, industry needs a kind of bursting epoxy foams Fragile cap, so as to have at the same time short molding cycle and into
The advantages such as this is low, service life is long and maintainability is strong.
The content of the invention
The technical problems to be solved by the invention are to overcome the deficiencies of the prior art and provide a kind of bursting epoxy foam
Material brittle lid and preparation method thereof.
The purpose of the present invention is can be achieved through the following technical solutions：It is frangible to provide a kind of bursting epoxy foam plastics
Lid, it is characterised in that including lid（1）With lid frame（4）, lid（1）With lid frame（4）Pass through pressing plate（2）And screw（3）Connection,
And in contact surface sealant（5）Filling.
Further, the Fragile cap shape is in dome-shaped.
Further, the lid（1）Inner surface radial direction and broadwise are provided with a certain number of stress grooves, and radial direction cross-like
The center of stress groove and broadwise stress groove overlaps.
Preferably, the lid（1）Radial direction cross stress groove is 4~10, and circumference stress groove is 2~8.
Further, the stress groove effective thickness is the 1/5~1/2 of lid thickness.
Further, the lid（1）Thickness is 15-30mm.
Further, the lid（1）Material is epoxy foam plastics, pressing plate（2）With lid frame（4）Material is metal, screw
（3）For standard fasteners, sealant（5）For rubber adhesive.
Another technical solution of the present invention is, there is provided the preparation method of above-mentioned bursting epoxy foam plastics Fragile cap,
Comprise the following steps：
1）Mould is cleared up, and in die face spraying 3-4 all over releasing agent；
2）Epoxy foam plastics slurry is prepared, pours into lid molding die, molds foaming；
3）Curing oven, cooling, the demoulding；
4）Lid（1）With lid frame（4）Fitting surface uniformly applies sealant（5）, use pressing plate（2）And screw（3）Assembling compresses；
5）Cold curing 7d, Fragile cap complete.
Preferably, the epoxy foam plastics foam pattern is molded for chemical blowing or physical blowing, and density of material is
0.3-0.8g/cm3。
In general, by above technical scheme of the present invention, following beneficial effect can be obtained：
1. be conducive to overall epoxy foam plastics lid in the stress slot structure of inner surface along warp-wise and broadwise specific distribution setting
Meter breaks through the directional fracture under load, reduces bursting power, prevents guided missile warhead from damaging.
2. bursting epoxy foam plastics Fragile cap has light-weight, simple in structure, non-maintaining, high reliability,
Shattering process is reliable and stable, and the missile weapon system transmitting reaction time can be greatly improved.
Brief description of the drawings
Fig. 1 is the bursting epoxy foam plastics Fragile cap structure diagram in the embodiment of the present invention；
Fig. 2 is the bursting epoxy foam plastics Fragile cap bottom view in the embodiment of the present invention；
Fig. 3 is the bursting epoxy foam plastics Fragile cap sectional view in the embodiment of the present invention；
Each label title in figure：1. lid, 2. pressing plates, 3. screws, 4. lid frames, 5 sealants.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further described.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and do not have to
In this distribution of restriction.In addition, as long as technical characteristic involved in each embodiment of invention described below is each other
Between do not form conflict and can be mutually combined.
Fig. 1 is the bursting epoxy foam plastics Fragile cap schematic diagram in the embodiment of the present invention；Fig. 2 is the embodiment of the present invention
In bursting epoxy foam plastics Fragile cap bottom view；Fig. 3 is that the bursting epoxy foam plastics in the embodiment of the present invention is easy
Broken lid sectional view.
Three figures more than, it includes lid 1 and lid frame 4, and lid 1 and lid frame 4 are connected by pressing plate 2 and screw 3, and
Filled used in contact surface sealant 5.1 shape of lid is in dome-shaped, its inner surface radial direction and broadwise are provided with a certain number of
Stress groove, and the center of radial direction cross-like stress groove and broadwise stress groove overlaps, it is frangible under relatively low MISSILE LAUNCHING impact
Cover rim stress groove orients damage to the terminal, does not damage guided missile warhead.
1 radial direction cross stress groove of lid is 4~10 in the present invention, and broadwise stress groove is 2~8.1 thickness of lid is
15-30mm, stress groove effective thickness are the 1/5~1/2 of lid thickness.1 material of lid is epoxy foam plastics, pressing plate 2 and lid
4 material of frame is metal, and screw is standard fasteners, and sealant 5 is rubber adhesive.Epoxy foam plastics foam pattern is change
Learn foaming or physical blowing shaping, density of material 0.3-0.8g/cm3.Frangible cap body 1 and through broadwise fracture strength slot structure
It can be adjusted according to actual load performance and bursting force value demand.In the present embodiment, 1 thickness 18-25mm of lid, fracture strength
Thickness 3-10mm at groove；It is 8 to design radial direction cross stress groove, is uniformly distributed；Broadwise stress groove is 2, positioned at 1 center of lid
With fracture root.
The specific method for preparing Fragile cap in the present invention is as follows：
1）Mould is cleared up, and in die face spraying 3-4 all over releasing agent；
2）Epoxy foam plastics slurry is prepared, main raw material(s) has epoxy resin, curing agent, inorganic hollow filler, coupling agent, table
Face activating agent, diluent, fire retardant etc., stir evenly and pour into lid molding die, mold foaming；
3）Molding die is put into curing oven, 120-150 DEG C of solidification temperature, hardening time 4-6h.Cure and terminate natural cooling
To 40-60 DEG C, lid demoulds；
4）Lid is polished with lid frame fitting surface with sand paper, uniform coat with rubber class sealant after clean, with pressing plate and screw
Assembling compresses；
5）Cold curing 7d, Fragile cap complete.
The embodiment of the present invention makes Fragile cap forward direction pressure-bearing and is more than 0.1MPa, and reverse pressure-bearing is more than 0.15MPa, bullet bursting
Peak force is not more than 2000N, and radially with broadwise fracture strength groove damage to the terminal, shattering process is reliable and stable, have it is light-weight,
Simple in structure, non-maintaining, high reliability, can be greatly improved the missile weapon system transmitting reaction time.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Made within the spirit and principles of the invention it is any more
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of bursting epoxy foam plastics Fragile cap, it is characterised in that including lid（1）With lid frame（4）, lid（1）With
Lid frame（4）Pass through pressing plate（2）And screw（3）Connection, and in contact surface sealant（5）Filling.
2. the bursting epoxy foam plastics Fragile cap as described in claim 1, it is characterised in that the bursting epoxy bubble
Foam plastics Fragile cap shape is in dome-shaped.
3. the bursting epoxy foam plastics Fragile cap as described in claim 1 or 2, it is characterised in that the lid（1）It is interior
Surface is radially and broadwise is provided with a certain number of stress grooves, and the center of radial direction cross-like stress groove and broadwise stress groove weight
Close.
4. bursting epoxy foam plastics Fragile cap as claimed in claim 3, it is characterised in that the lid（1）Radially hand over
It is 4~10 to pitch stress groove, and circumference stress groove is 2~8.
5. bursting epoxy foam plastics Fragile cap as claimed in claim 3, it is characterised in that the stress groove effective thickness
For the 1/5~1/2 of lid thickness.
6. bursting epoxy foam plastics Fragile cap as claimed in claim 1 or 2, it is characterised in that the lid（1）Thickness
For 15-30mm.
7. bursting epoxy foam plastics Fragile cap as claimed in claim 1 or 2, it is characterised in that the pressing plate（2）And lid
Frame（4）Material is metal, screw（3）For standard fasteners, sealant（5）For rubber adhesive.
8. the preparation method of bursting epoxy foam plastics Fragile cap as claimed in claim 1, it is characterised in that including following
Step：
1）Mould is cleared up, and in die face spraying 3-4 all over releasing agent；
2）Epoxy foam plastics slurry is prepared, pours into lid molding die, molds foaming；
3）Curing oven, cooling, the demoulding；
4）Lid（1）With lid frame（4）Fitting surface uniformly applies sealant（5）, use pressing plate（2）And screw（3）Assembling compresses；
1）Cold curing 7d, Fragile cap complete.
9. the preparation method of bursting epoxy foam plastics Fragile cap as claimed in claim 8, it is characterised in that the epoxy
Foam plastic foaming mode is molded for chemical blowing or physical blowing, density of material 0.3-0.8g/cm3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223614.6A CN107932817A (en) | 2017-11-29 | 2017-11-29 | A kind of bursting epoxy foam plastics Fragile cap and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223614.6A CN107932817A (en) | 2017-11-29 | 2017-11-29 | A kind of bursting epoxy foam plastics Fragile cap and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107932817A true CN107932817A (en) | 2018-04-20 |
Family
ID=61946602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711223614.6A Pending CN107932817A (en) | 2017-11-29 | 2017-11-29 | A kind of bursting epoxy foam plastics Fragile cap and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107932817A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211007A (en) * | 2018-10-11 | 2019-01-15 | 上海航天精密机械研究所 | A kind of protective cover of the launch canister with burn-out proof and rain and snow function |
| CN109373813A (en) * | 2018-10-10 | 2019-02-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of launching tube and a kind of emitter |
| CN109682255A (en) * | 2018-12-25 | 2019-04-26 | 南京航空航天大学 | Preset weak area 2.5D woven composite material Fragile cap and preparation method thereof |
| CN110697066A (en) * | 2019-10-10 | 2020-01-17 | 北京特种机械研究所 | Fragile cover with mooring, buffering and ablation-proof functions |
| CN110806151A (en) * | 2019-09-25 | 2020-02-18 | 北京玻钢院复合材料有限公司 | Fragile front cover of missile and preparation method thereof |
| CN112066797A (en) * | 2020-08-31 | 2020-12-11 | 湖北三江航天万峰科技发展有限公司 | Frangible cover and forming method thereof |
| CN112985173A (en) * | 2021-02-10 | 2021-06-18 | 上海材料研究所 | Light sealed front end cover using supporting mechanism to improve reverse bearing capacity |
| CN113701557A (en) * | 2021-08-30 | 2021-11-26 | 贵州航天天马机电科技有限公司 | Large external pressure low impact force frangible cover |
| CN115014125A (en) * | 2022-06-17 | 2022-09-06 | 北京新风航天装备有限公司 | Breakable thin film cover made of carbon fiber composite material and broken according to preset path |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913692A (en) * | 2015-06-30 | 2015-09-16 | 湖北三江航天万峰科技发展有限公司 | Fragile cap |
| CN104974447A (en) * | 2015-06-30 | 2015-10-14 | 苏州博利迈新材料科技有限公司 | Polyvinyl chloride foam plastic and preparation method thereof |
| CN106895740A (en) * | 2017-01-19 | 2017-06-27 | 上海机电工程研究所 | Composite material film protecgulum with rubber as matrix and preparation method thereof |
-
2017
- 2017-11-29 CN CN201711223614.6A patent/CN107932817A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913692A (en) * | 2015-06-30 | 2015-09-16 | 湖北三江航天万峰科技发展有限公司 | Fragile cap |
| CN104974447A (en) * | 2015-06-30 | 2015-10-14 | 苏州博利迈新材料科技有限公司 | Polyvinyl chloride foam plastic and preparation method thereof |
| CN106895740A (en) * | 2017-01-19 | 2017-06-27 | 上海机电工程研究所 | Composite material film protecgulum with rubber as matrix and preparation method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373813A (en) * | 2018-10-10 | 2019-02-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of launching tube and a kind of emitter |
| CN109373813B (en) * | 2018-10-10 | 2020-09-01 | 中国科学院长春光学精密机械与物理研究所 | Launching tube and launching device |
| CN109211007A (en) * | 2018-10-11 | 2019-01-15 | 上海航天精密机械研究所 | A kind of protective cover of the launch canister with burn-out proof and rain and snow function |
| CN109682255A (en) * | 2018-12-25 | 2019-04-26 | 南京航空航天大学 | Preset weak area 2.5D woven composite material Fragile cap and preparation method thereof |
| CN109682255B (en) * | 2018-12-25 | 2021-02-05 | 南京航空航天大学 | 2.5D woven composite material frangible cover with preset weak area and preparation method thereof |
| CN110806151B (en) * | 2019-09-25 | 2021-02-12 | 北京玻钢院复合材料有限公司 | Fragile front cover of missile and preparation method thereof |
| CN110806151A (en) * | 2019-09-25 | 2020-02-18 | 北京玻钢院复合材料有限公司 | Fragile front cover of missile and preparation method thereof |
| CN110697066A (en) * | 2019-10-10 | 2020-01-17 | 北京特种机械研究所 | Fragile cover with mooring, buffering and ablation-proof functions |
| CN112066797A (en) * | 2020-08-31 | 2020-12-11 | 湖北三江航天万峰科技发展有限公司 | Frangible cover and forming method thereof |
| CN112066797B (en) * | 2020-08-31 | 2022-11-25 | 湖北三江航天万峰科技发展有限公司 | Frangible cover and forming method thereof |
| CN112985173A (en) * | 2021-02-10 | 2021-06-18 | 上海材料研究所 | Light sealed front end cover using supporting mechanism to improve reverse bearing capacity |
| CN113701557A (en) * | 2021-08-30 | 2021-11-26 | 贵州航天天马机电科技有限公司 | Large external pressure low impact force frangible cover |
| CN115014125A (en) * | 2022-06-17 | 2022-09-06 | 北京新风航天装备有限公司 | Breakable thin film cover made of carbon fiber composite material and broken according to preset path |
| CN115014125B (en) * | 2022-06-17 | 2023-07-04 | 北京新风航天装备有限公司 | Broken carbon fiber composite fragile film cover according to preset path |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107932817A (en) | A kind of bursting epoxy foam plastics Fragile cap and preparation method thereof | |
| CN111256536B (en) | Penetration cutting wire laying reinforced plane integral breaking type frangible cover and preparation method thereof | |
| CN103847163A (en) | Foam-filled honeycomb aluminum core sandwich structure and preparation method thereof | |
| US20090233053A1 (en) | Epoxy Core With Expandable Microspheres | |
| CN105415710A (en) | Antenna housing structure and forming method and die thereof | |
| CN104552727A (en) | Preparation method of carbon fiber product | |
| CN101808699B (en) | Badminton racket and manufacturing method of badminton racket | |
| WO2009084014A3 (en) | An epoxy resin composition | |
| John et al. | Syntactic foams | |
| CN105690821A (en) | Wet winding forming method for fiber-reinforced resin matrix composite sandwich pipe | |
| KR20170020817A (en) | Pressure-dependent foam moulding of poly(meth)acrylimide particles in closed moulds for producing rigid foam cores | |
| CN106995587A (en) | A kind of high strength hard flame retardant epoxy foamed material and preparation method thereof | |
| CN102463679B (en) | Preparation method of spacing rod frame used for power transmission line | |
| CN111322909B (en) | Integrally-broken-type frangible cover with stepped cutting plane and preparation method thereof | |
| EP2529106B1 (en) | A blade for a turbine operating in water | |
| CN108891042B (en) | Preparation method of machinable solid buoyancy material | |
| CN108948663B (en) | Preparation method of missile launching frangible cover | |
| CN101797805A (en) | Method for manufacturing inflatable expansion wing skin based on shape memory polymer | |
| CN116294798A (en) | Fragile cover with automatic resetting function and preparation method thereof | |
| CN102664309B (en) | Antenna radar cover and preparation method thereof | |
| CN110819071A (en) | Normal-temperature self-repairing type solid buoyancy material for ocean development equipment and preparation method thereof | |
| CN103017616B (en) | A kind of composite of one-sided unlatching easily splits protecgulum and preparation method | |
| CN111216377B (en) | Forming method of composite material structural member | |
| CN209785661U (en) | Composite disc insulator with new structure | |
| CN111113953B (en) | Forming die set of composite structural member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |