CN108300347B - High temperature resistant thermal-insulated structure of anti vibration and temperature impact - Google Patents
High temperature resistant thermal-insulated structure of anti vibration and temperature impact Download PDFInfo
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- CN108300347B CN108300347B CN201711398798.XA CN201711398798A CN108300347B CN 108300347 B CN108300347 B CN 108300347B CN 201711398798 A CN201711398798 A CN 201711398798A CN 108300347 B CN108300347 B CN 108300347B
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- 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
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Abstract
The invention relates to a high-temperature-resistant heat insulation structure resisting vibration and temperature impact, which is a three-layer structure and sequentially comprises a surface protection layer (1), a heat insulation layer (2) and an adhesive layer (3) from outside to inside, wherein the high-temperature-resistant heat insulation structure resisting vibration and temperature impact is characterized in that a heat insulation material is fixedly arranged on the surface of a structure and a part base material which need heat insulation through an adhesive, and the surface of the heat insulation material is protected through reinforced fabric composite liquid rubber. The high-temperature-resistant heat insulation structure resisting vibration and temperature impact has the advantages of simple structure, good heat insulation effect, strong vibration and temperature impact resistance and better installation and maintenance process performance.
Description
Technical Field
The invention relates to a high-temperature-resistant heat insulation structure resisting vibration and temperature impact, and belongs to the technical field of structural materials.
Background
With the continuous increase of the power of an aircraft engine, high-temperature fuel gas from a combustion chamber flows to a tail nozzle along a flow channel, the temperature is gradually reduced, and the temperature is still hundreds of degrees centigrade. The power turbine casing and other parts adjacent to the tail nozzle are only a few millimeters away from the inner wall and the outer wall due to limited space, and the high-temperature inner wall forms strong heat transfer to the outer wall, so that the reliability of the system operation is seriously threatened, and the tactical use of the airplane is influenced.
The traditional technology usually adopts pure fiber cotton or fiber cloth to wrap the fiber cotton for heat insulation. The cellucotton is easy to crush and fall off, is easy to expand, become brittle and crack under the action of engine vibration and high and low temperature alternating impact, and is debonded and falls off from a protected part after being used for a period of time, so that the heat insulation protection effect is lost.
The silicone resin takes Si-O-Si as a main chain, organic groups are connected on silicon atoms, and the cross-linking type semi-inorganic high polymer with a highly cross-linking structure has very good heat resistance, cold resistance, electric insulation and weather resistance, and can be used at 1200 ℃ or higher in a short time. The modified silicone resin has inferior heat resistance to pure silicone resin, but superior adhesion to the base material to pure silicone resin.
The room temperature vulcanized silicone rubber is a silicone rubber capable of undergoing a curing crosslinking reaction at room temperature, and the base rubber is generally 1-8 x 104The g/mol active end group polydiorganosiloxane and the mixed glue have better fluidity, do not need special equipment and technology for processing, and are suitable for coating and pouring forming.
On the basis of the room temperature vulcanized silicone rubber, fluorine atoms are introduced into a molecular chain to form the room temperature vulcanized fluorosilicone rubber, so that the defect that the silicone rubber cannot tolerate the soaking of hydrocarbon compounds can be improved and overcome. Although the heat resistance is reduced, people are not lost as members of family of heat-resistant and cold-resistant materials, and the heroic field and range are remarkably expanded.
The silicone-based adhesive, the room-temperature vulcanized silicone rubber, the room-temperature vulcanized fluorosilicone rubber and other materials are widely applied to the high and new technical fields of aviation, aerospace, electronics, communication and the like.
Disclosure of Invention
The invention provides a high-temperature resistant heat insulation structure resisting vibration and temperature impact, aiming at solving the defects in the prior art, and aiming at fixing a heat insulation material on a structure and a part needing heat insulation through an adhesive and protecting the surface of the heat insulation material through reinforcing fabric composite liquid rubber.
The purpose of the invention is realized by the following technical scheme:
this kind of high temperature resistant thermal-insulated structure of anti vibration and temperature impact, its characterized in that: this structure is three layer construction, and outside-in is surface protection layer 1, insulating layer 2, adhesive linkage 3 in proper order, wherein:
the surface protection layer 1 is made of reinforced fabric composite liquid rubber, the mass ratio of the reinforced fabric to the liquid rubber is 1:10, the reinforced fabric is fiber cloth formed by spinning one or a mixture of more of high silica fiber, quartz fiber, alumina fiber and zirconia fiber, and the liquid rubber is one or a mixture of two of room-temperature vulcanized silicone rubber and room-temperature vulcanized fluorosilicone rubber;
the heat insulation layer 2 is fiber cloth, fiber blanket or fiber paper and fiber board formed by adhesive, which are formed by weaving and needling one or more of high silica fiber, quartz fiber, alumina fiber or zirconia fiber;
the bonding layer 3 is one or a mixture of more of a silicone-based adhesive, an epoxy modified silicone-based adhesive, a polyester modified silicone-based adhesive or a phenolic modified silicone-based adhesive.
The high-temperature-resistant heat insulation structure resisting vibration and temperature impact has the advantages of simple structure, good heat insulation effect, strong vibration and temperature impact resistance and better installation and maintenance process performance.
Drawings
FIG. 1 is a schematic tubular view of a vibration and temperature shock resistant refractory insulation structure according to the present invention
FIG. 2 is a schematic plate-like view of a vibration and temperature shock resistant refractory insulation structure according to the present invention
Detailed description of the invention
The technical scheme of the invention is further detailed in the following by combining the drawings and the embodiment:
example 1:
referring to the attached drawing 1, the high temperature resistant heat insulation structure resisting vibration and temperature impact is a three-layer structure, which is composed of a surface protection layer 1, a heat insulation layer 2 and a bonding layer 3 from outside to inside in sequence, wherein:
the surface protection layer 1 is made of reinforced fabric composite liquid rubber, the mass ratio of the reinforced fabric to the liquid rubber is 1:10, the reinforced fabric is high silica fiber cloth, and the liquid rubber is room temperature vulcanized silicone rubber.
The heat insulation layer 2 is a tubular fiber product formed by a mixture of quartz fibers and alumina fibers and an adhesive.
The adhesive of the bonding layer 3 is a silicone-based adhesive.
The high-temperature-resistant heat insulation structure resisting vibration and temperature impact is characterized in that the heat insulation layer 2 is fixedly arranged on the outer wall 4 of the pipeline through the bonding layer 3, and the surface of the heat insulation layer 2 is protected through the surface protection layer 1 of the reinforced fabric compounded liquid rubber.
The implementation effect is as follows: the hot air with the temperature of 500 ℃ flows in the pipeline, the highest temperature of the external surface of the heat insulation structure with the thickness of 7.5mm is tested to be not more than 250 ℃, the heat insulation structure can bear the impact of the temperature of 500 ℃ to 55 ℃ without the phenomena of cracks, falling off and the like, and the structure is kept well under the vibration conditions of 15Hz to 2000Hz and 0.03g2/Hz to 1g 2/Hz.
Example 2:
referring to the attached drawing 2, the vibration and temperature impact resistant high temperature insulation structure is a three-layer plate structure, which comprises a surface protection layer 1, a thermal insulation layer 2 and an adhesive layer 3 from outside to inside in sequence, wherein:
the surface protection layer 1 is made of reinforced fabric composite liquid rubber, the mass ratio of the reinforced fabric to the liquid rubber is 1:10, the reinforced fabric is high silica fiber cloth, and the liquid rubber is room temperature vulcanized silicone rubber.
The heat insulation layer 2 is a plate-shaped fiber product formed by high silica fiber composite adhesive.
The adhesive of the bonding layer 3 is epoxy modified silicone-based adhesive.
The high-temperature-resistant heat insulation structure resisting vibration and temperature impact is characterized in that the heat insulation layer 2 is fixedly arranged on the plate-shaped outer wall 4 through the bonding layer 3, and the surface of the heat insulation layer 2 is protected through the surface protection layer 1 of the reinforced fabric compounded liquid rubber.
The implementation effect is as follows: the temperature of the plane hot face space is rapidly increased from room temperature to 400 ℃ within 2min, the test shows that the highest temperature of the back surface of the heat insulation structure with the thickness of 3mm is not more than 250 ℃, the heat insulation structure can bear the temperature impact of 400 ℃ to 55 ℃ without the phenomena of cracks, falling off and the like, and the temperature of the heat insulation structure is 50Hz to 150Hz and 0.01g2/Hz～0.02g2The structure remains good under the/Hz vibration condition.
Claims (1)
1. The utility model provides a high temperature resistant thermal-insulated structure of anti vibration and temperature impact which characterized in that:
this kind of high temperature resistant thermal-insulated structure of anti vibration and temperature impact is three layer construction, and outside-in is surface protection layer (1), insulating layer (2), adhesive linkage (3) in proper order, wherein:
the surface protection layer (1) is made of reinforced fabric composite liquid rubber, the mass ratio of the reinforced fabric to the liquid rubber is 1:10, the reinforced fabric is high silica fiber cloth, and the liquid rubber is room temperature vulcanized silicone rubber;
the heat insulation layer (2) is a tubular fiber product formed by compositely gluing a mixture of quartz fibers and alumina fibers;
the adhesive of the bonding layer (3) is a silicone-based adhesive;
the high-temperature-resistant heat insulation structure resisting vibration and temperature impact is characterized in that the heat insulation layer (2) is fixedly arranged on the outer wall (4) of the pipeline through the bonding layer (3), and the surface protection layer (1) of the reinforced fabric composite liquid rubber is used for protecting the surface of the heat insulation layer (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711398798.XA CN108300347B (en) | 2017-12-21 | 2017-12-21 | High temperature resistant thermal-insulated structure of anti vibration and temperature impact |
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| CN201711398798.XA CN108300347B (en) | 2017-12-21 | 2017-12-21 | High temperature resistant thermal-insulated structure of anti vibration and temperature impact |
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| CN108300347A CN108300347A (en) | 2018-07-20 |
| CN108300347B true CN108300347B (en) | 2021-03-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654583A (en) * | 2005-01-19 | 2005-08-17 | 山东大学 | Multifunctional ablation-resistant adhesive for thermal protection and method for preparing same |
| CN103047013A (en) * | 2011-05-31 | 2013-04-17 | Mra***有限公司 | Laminate thermal insulation blanket for aircraft applications and process therefor |
| CN103600530A (en) * | 2013-11-18 | 2014-02-26 | 航天特种材料及工艺技术研究所 | Elastic heat-insulation sealing material and preparation method thereof |
| CN106519697A (en) * | 2016-12-08 | 2017-03-22 | 航天特种材料及工艺技术研究所 | Hole sealing composition, strain isolation pad for sealing holes using composition, and method for manufacturing strain isolation pad |
| CN107353871A (en) * | 2017-08-21 | 2017-11-17 | 山东省科学院新材料研究所 | A kind of high temperature resistant adhering and sealing silicones and preparation method thereof |
-
2017
- 2017-12-21 CN CN201711398798.XA patent/CN108300347B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654583A (en) * | 2005-01-19 | 2005-08-17 | 山东大学 | Multifunctional ablation-resistant adhesive for thermal protection and method for preparing same |
| CN103047013A (en) * | 2011-05-31 | 2013-04-17 | Mra***有限公司 | Laminate thermal insulation blanket for aircraft applications and process therefor |
| CN103600530A (en) * | 2013-11-18 | 2014-02-26 | 航天特种材料及工艺技术研究所 | Elastic heat-insulation sealing material and preparation method thereof |
| CN106519697A (en) * | 2016-12-08 | 2017-03-22 | 航天特种材料及工艺技术研究所 | Hole sealing composition, strain isolation pad for sealing holes using composition, and method for manufacturing strain isolation pad |
| CN107353871A (en) * | 2017-08-21 | 2017-11-17 | 山东省科学院新材料研究所 | A kind of high temperature resistant adhering and sealing silicones and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 有机硅材料在航空工业的应用;范召东等;《有机硅材料》;20151125;第29卷(第6期);第491-498页 * |
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