CN106197167A - Explosive protection pretension protective layer and the method for explosive protection thereof - Google Patents
Explosive protection pretension protective layer and the method for explosive protection thereof Download PDFInfo
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- CN106197167A CN106197167A CN201610704202.3A CN201610704202A CN106197167A CN 106197167 A CN106197167 A CN 106197167A CN 201610704202 A CN201610704202 A CN 201610704202A CN 106197167 A CN106197167 A CN 106197167A
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- Prior art keywords
- protective layer
- explosive
- protection
- pretension
- heated
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention discloses a kind of explosive protection pretension protective layer, it is the external member being prepared from by the material possessing thermal contraction performance；The material of described thermal contraction performance refers to when being heated to 60～180 DEG C, and this material is elastic state from glassy transition.After above-mentioned protective layer is heated to 60～180 DEG C, to the outside imposed load of protective layer inwall, expand the inner chamber of protective layer, cool down molding, standby；Then being coated in explosive by the protective layer that inner chamber expands, be again heated to 60～180 DEG C, protective layer shrinks, and is fitted tightly in explosive, i.e. completes the protection of explosive after being cooled to room temperature.The explosive protection pretension protective layer of the present invention is due to the pyrocondensation performance of protective layer self and high strength properties; the effectively laminating between heavy seal coat and explosive; reduce powder charge displacement in cavity simultaneously, to strengthen the protection effect to explosive, promote warhead security performance.
Description
Technical field
The present invention relates to a kind of explosive technical field, be specifically related to explosive protection pretension protective layer and explosive protection thereof
Method.
Background technology
Along with more and more higher to the requirement of warhead charge stability, the explosive of warhead inside filling is protected
Pretreatment is the most particularly important.The modes using polymer protection layer cladding carry out protecting pretreatment, in order to ensure protection more
Closely cooperating between layer and explosive, claims layer internal diameter less than explosive diameter during design so that explosive protection is pre-
Process more difficulty.Meanwhile, the protective layer deformation used at present is relatively big, and rebound performance is undesirable, inadequate from pretension, it is impossible to protect
With the fitting tightly of explosive under the storage of card warhead, transport and duty, cause the protection effect to explosive poor.
Summary of the invention
[solving the technical problem that]
Present invention aim to address above-mentioned problem of the prior art, it is provided that a kind of explosive protection pretension protective layer and
The method of explosive protection.In a heated condition, body shrinks this protective layer, possesses the function from pretension, so that it is guaranteed that
Fit tightly with explosive, so that explosive is effectively protected.
[technical scheme]
In order to reach above-mentioned technique effect, the present invention takes techniques below scheme:
A kind of explosive protection pretension protective layer, it is the external member being prepared from by the material possessing thermal contraction performance；Institute
The material stating thermal contraction performance refers to when being heated to 60～180 DEG C, and this material is elastic state from glassy transition.
The present invention further technical scheme, the material of described thermal contraction performance refers to when being heated to 60～110 DEG C,
This material is elastic state from glassy transition.
The present invention further technical scheme, the stretch modulus under the material room temperature of described high-temperature shrinkage performance is not less than
80MPa；When being heated to 60～180 DEG C, its stretch modulus is not higher than 4MPa.
The present invention further technical scheme, the material of described high-temperature shrinkage performance is cancellated polyolefin, gathers
Urethane, polyester or modified rubber.
The present invention further technical scheme, the thickness of this protective layer is 0.5～5mm.
The present invention further technical scheme, is uniformly arranged at least 4 reinforcements around this protective layer.
A kind of explosive protection method, it be utilize above-mentioned protective layer to be heated to 60～180 DEG C after, in protective layer
The outside imposed load of wall, expands the inner chamber of protective layer, cools down molding, standby；Then the protective layer that inner chamber expands is coated on fried
On medicine part, being again heated to 60～180 DEG C, protective layer shrinks, and is fitted tightly in explosive, completes explosive after being cooled to room temperature
Protection.
Will be described in detail the present invention below.
Carry out the operation sequence of explosive protection in order to optimize currently used polymer protection layer manual operations, effectively protect
Fitting tightly between card powder charge part and protective layer, reduces powder charge displacement under warhead storage, transport and duty, to strengthen
Protection effect, promotes warhead security performance.The present invention uses the material of thermal contraction performance to prepare explosive protection pretension protection
Layer, in a heated condition, body shrinks this protective layer, possesses the function from pretension, so that it is guaranteed that closely paste with explosive
Close, so that explosive is effectively protected.
Present invention preferably uses cancellated material to be prepared from, have mainly by cross-linked structure macromolecule
The feature of " memory effect ".Using the material with high-temperature shrinkage performance, this material is vitreous body at normal temperatures, has higher
Intensity, when being heated to 60～180 DEG C, can be changed into high-elastic condition.By at such a temperature protective layer being executed from inside to outside
Addition of constraints power, it is standby that temperature reduces aftershaping.Then being coated in explosive by protective layer, heating, protective layer is changed into high-elastic
Condition, and shrink due to its " memory effect ", after cooling, protective layer is changed into glassy state, recovers its high intensity and modulus
Character, explosive is effectively protected.
The temperature that present invention defines heating is 60～180 DEG C, in this temperature range, and the security protection of its explosive
Journey is the safest, it is to avoid explosive is affected by excessive temperature.It addition, present invention also defines described high-temperature shrinkage performance
Stretch modulus under material room temperature is not less than 80MPa；When being heated to 60～180 DEG C, its stretch modulus is not higher than 4MPa.Above-mentioned
Stretch modulus under the conditions of, it is ensured that this material has preferably elastic and degree of drawing at 60～180 DEG C, has at normal temperatures
There is higher hardness.By the protective layer in one layer of present invention of explosive outer cladding, it is ensured that body has higher intensity
And modulus, and uniform a number of reinforcement around protective layer, ensureing explosive state effect in cavity
Further enhancing explosive and cavity under premise coordinates intensity.Owing to outside explosive, the protective layer of protection is exceeding carrier strip
Under part, self-deformation is less, significantly weakens explosive displacement in cavity, improves warhead anti-overloading performance.Middle finger of the present invention
Going out explosive protection pretension protective layer is external member, and this external member concrete shape designs according to the shape of explosive, can be cylindrical shape,
Rectangular-shaped or irregular tubular.
[beneficial effect]
The present invention compared with prior art, has a following beneficial effect:
The explosive protection pretension protective layer of the present invention is due to the pyrocondensation performance of protective layer self and high strength properties, effectively
Laminating between heavy seal coat and explosive, reduces powder charge displacement in cavity simultaneously, to strengthen the protection to explosive
Effect, promotes warhead security performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1 explosive protection pretension protective layer；
Fig. 2 is the use state decomposition schematic diagram of the embodiment of the present invention 1 explosive protection pretension protective layer.
Detailed description of the invention
Below in conjunction with embodiments of the invention, the invention will be further elaborated.
Embodiment 1:
A kind of explosive protection pretension protective layer as shown in Figure 1, it is cancellated poly-by possessing thermal contraction performance
The external member that alkene is prepared from；This protective layer stretch modulus at normal temperatures is not less than 80MPa；When being heated to 60～180 DEG C, its
Stretch modulus is not higher than 4MPa.The thickness of this protective layer is 0.5～5mm.16 reinforcements it are uniformly arranged around described protective layer.
The means of defence of a kind of explosive utilizing above-mentioned explosive protection pretension protective layer to carry out: medicine part is protected pretension
After protective layer 2 is heated to 60～180 DEG C, to the outside imposed load of protective layer inwall, expands the inner chamber of protective layer, cool down molding,
Standby；Then being coated in explosive by the protective layer that inner chamber expands, be again heated to 60～180 DEG C, protective layer shrinks, and closely pastes
It is combined in explosive 1, after being cooled to room temperature, completes the protection of explosive.Finally the explosive protected is filled in housing 3.
The use state decomposition figure of this explosive protection pretension protective layer is as shown in Figure 2.
Another embodiment of the present embodiment, replaces with polyurethane, polyester or modified rubber by cancellated polyolefin
Glue
Embodiment 2
A kind of explosive protection pretension protective layer, it is to be prepared from by possessing the cancellated polyurethane of thermal contraction performance
External member；This protective layer stretch modulus at normal temperatures is not less than 80MPa；When being heated to 60～160 DEG C, its stretch modulus is the highest
In 4MPa.The thickness of this protective layer is 0.5～3mm.8 reinforcements it are uniformly arranged around described protective layer.
The means of defence of a kind of explosive utilizing above-mentioned explosive protection pretension protective layer to carry out: protective layer is heated to
After 60～160 DEG C, to the outside imposed load of protective layer inwall, expand the inner chamber of protective layer, cool down molding, standby；Then by interior
The protective layer that chamber expands is coated in explosive, is again heated to 60～160 DEG C, and protective layer shrinks, and is fitted tightly in explosive,
The protection of explosive is completed after being cooled to room temperature.Finally the explosive protected is filled in housing.
Embodiment 3
A kind of explosive protection pretension protective layer, it is prepared from by possessing the cancellated polyester of thermal contraction performance
External member；This protective layer stretch modulus at normal temperatures is not less than 80MPa；When being heated to 80～110 DEG C, its stretch modulus is not higher than
4MPa.The thickness of this protective layer is 2～3mm.8 reinforcements it are uniformly arranged around described protective layer.
The means of defence of a kind of explosive utilizing above-mentioned explosive protection pretension protective layer to carry out: protective layer is heated to
After 80～110 DEG C, to the outside imposed load of protective layer inwall, expand the inner chamber of protective layer, cool down molding, standby；Then by interior
The protective layer that chamber expands is coated in explosive, is again heated to 80～110 DEG C, and protective layer shrinks, and is fitted tightly in explosive,
The protection of explosive is completed after being cooled to room temperature.Finally the explosive protected is filled in housing.
Although reference be made herein to invention has been described for the explanatory embodiment of the present invention, and above-described embodiment is only this
Bright preferably embodiment, embodiments of the present invention are also not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other amendments and embodiment, and these amendments and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (7)
1. an explosive protection pretension protective layer, it is characterised in that it is to be prepared from by the material possessing thermal contraction performance
External member；The material of described thermal contraction performance refers to when being heated to 60～180 DEG C, and this material is elastic state from glassy transition.
Explosive the most according to claim 1 protection pretension protective layer, it is characterised in that the material of described thermal contraction performance
Referring to when being heated to 60～110 DEG C, this material is elastic state from glassy transition.
Explosive the most according to claim 2 protection pretension protective layer, it is characterised in that the material of described high-temperature shrinkage performance
Stretch modulus under material room temperature is not less than 80MPa；When being heated to 60～180 DEG C, its stretch modulus is not higher than 4MPa.
Explosive the most according to claim 3 protection pretension protective layer, it is characterised in that the material of described high-temperature shrinkage performance
Material is cancellated polyolefin, polyurethane, polyester or modified rubber.
Explosive the most according to claim 1 protection pretension protective layer, it is characterised in that the thickness of this protective layer be 0.5～
5mm。
Explosive the most according to claim 1 protection pretension protective layer, it is characterised in that be uniformly arranged around this protective layer
At least 4 reinforcements.
7. the method for an explosive protection, it is characterised in that it is to utilize the protective layer described in claim 1～6 any one
After being heated to 60～180 DEG C, to the outside imposed load of protective layer inwall, expand the inner chamber of protective layer, cool down molding, standby；So
After by inner chamber expand protective layer be coated in explosive, be again heated to 60～180 DEG C, protective layer shrink, be fitted tightly over fried
On medicine part, after being cooled to room temperature, complete the protection of explosive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704202.3A CN106197167B (en) | 2016-08-22 | 2016-08-22 | The method that explosive protection pre-tightens protective layer and its explosive protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704202.3A CN106197167B (en) | 2016-08-22 | 2016-08-22 | The method that explosive protection pre-tightens protective layer and its explosive protection |
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| CN106197167A true CN106197167A (en) | 2016-12-07 |
| CN106197167B CN106197167B (en) | 2018-08-14 |
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| CN201610704202.3A Active CN106197167B (en) | 2016-08-22 | 2016-08-22 | The method that explosive protection pre-tightens protective layer and its explosive protection |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179944B1 (en) * | 1996-06-30 | 2001-01-30 | The United States Of America As Represented By The Secretary Of The Navy | Process for preparing composite warhead casings and product |
| CN103225993A (en) * | 2013-05-07 | 2013-07-31 | 中国工程物理研究院化工材料研究所 | Vacuum filling and sealing device for warhead |
| CN203260438U (en) * | 2013-06-05 | 2013-10-30 | 周雷 | Heat shrink tube with shielding function |
| CN104893079A (en) * | 2015-03-26 | 2015-09-09 | 苏州市德莱尔建材科技有限公司 | Cable jacket level heat shrinkable tube and preparation method therefor |
-
2016
- 2016-08-22 CN CN201610704202.3A patent/CN106197167B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179944B1 (en) * | 1996-06-30 | 2001-01-30 | The United States Of America As Represented By The Secretary Of The Navy | Process for preparing composite warhead casings and product |
| CN103225993A (en) * | 2013-05-07 | 2013-07-31 | 中国工程物理研究院化工材料研究所 | Vacuum filling and sealing device for warhead |
| CN203260438U (en) * | 2013-06-05 | 2013-10-30 | 周雷 | Heat shrink tube with shielding function |
| CN104893079A (en) * | 2015-03-26 | 2015-09-09 | 苏州市德莱尔建材科技有限公司 | Cable jacket level heat shrinkable tube and preparation method therefor |
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| Publication number | Publication date |
|---|---|
| CN106197167B (en) | 2018-08-14 |
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