CN109054398A - A kind of heat insulation layer, the preparation method of heat insulation layer and the expansion type lamellar composite formula elastic cushion block being made from it - Google Patents
A kind of heat insulation layer, the preparation method of heat insulation layer and the expansion type lamellar composite formula elastic cushion block being made from it Download PDFInfo
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- CN109054398A CN109054398A CN201810869432.4A CN201810869432A CN109054398A CN 109054398 A CN109054398 A CN 109054398A CN 201810869432 A CN201810869432 A CN 201810869432A CN 109054398 A CN109054398 A CN 109054398A
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- heat insulation
- insulation layer
- backing layer
- cushion block
- elastic cushion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
- E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
- E01B9/683—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material layered or composite
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of expansion type lamellar composite formula elastic cushion blocks, including Backing layer, it is fitted on the Backing layer, and it is used for the lower heat insulation layer and upper heat insulation layer of the Backing layer insulation, heat insulation layer is sequentially passed through from top to bottom, the Static stiffness adjusting hole of Backing layer and the setting of lower heat insulation layer, heat insulation layer is sequentially passed through from top to bottom, Backing layer and the setting of lower heat insulation layer, and two railway spike mounting holes corresponding with the screw thread channel nail hole on concrete sleeper, and heat insulation layer is sequentially passed through from top to bottom, Backing layer and the setting of lower heat insulation layer, and the arcwall face being connect with any railway spike mounting hole.The present invention also provides the foam process of a kind of heat insulation layer, the preparation process of heat insulation layer and expansion type lamellar composite formula elastic cushion block.The present invention has many advantages, such as that simple structure, long service life, enough rigid support intensity, suitable environment temperature are wide.
Description
Technical field
The present invention relates to technical field of rail traffic, especially a kind of heat insulation layer, the preparation method of heat insulation layer
And the expansion type lamellar composite formula elastic cushion block being made from it.
Background technique
Elastic insert, is the important component of heavy-haul line fastener system, which is mounted below rail (such as
Shown in Fig. 1), elastic insert can be divided into upper elastic insert and lower elastic insert by boundary of iron chair, and main function is buffer vehicle
The high speed impact vibration generated when passing through rail, protects roadbed and sleeper, and be electrically insulated to railway signal system.Not only
In this way, the elastic insert can also reduce track settlement amount, track is made to keep higher smooth degree, reduces railway maintenance maintenance work
Amount.
The material of the heavily loaded fastener system elastic insert used both at home and abroad mainly includes rubber material, plastic material, thermoplastic
Property elastomeric material and microcellular foam material etc..Wherein, the ageing resistance of rubber material is poor and service life is short, is equipped with
The orbital segment of the elastic insert of rubber material needs to regularly replace elastic insert, in this way, substantially increase maintenance cost.And it adopts
Poor with the rigidly big of elastic insert of plastic material, dynamic mechanical, damping, buffering effect are poor.In addition, thermoplastic elastomehc
Elastomer material and miniature foaming material all have excellent flexibility under room temperature and low temperature (10 DEG C~-20 DEG C), and excellent is resistance to
Flex crack, high resiliency and stress relaxation-resistant, croop property, therefore, thermoplastic elastic material and miniature foaming material are by more
It is applied to elastic insert more.
It is generally known that northern China be on active service heavy haul railway track all the year round running temperature between -40 DEG C~60 DEG C, and
And the limiting temperature of traditional miniature foaming material can only achieve -30 DEG C or so.In addition, the dust pollution object that goods train generates
More serious, generated dust pollution object is easily accessible the temporary space of elastic insert, and if only if rain (snow) enters elasticity
The temporary space of bed course causes elastic insert frostbite to damage in -40 DEG C~-20 DEG C of extremely low temperature.Moreover,
For elastic insert in high/low temperature conversion process, Static stiffness change rate is excessive often beyond the 50%~150% of room temperature Static stiffness, makes
Enough resilient support can not be provided by obtaining elastic insert.It can be seen that traditional elastic insert can no longer meet northern China
The requirement of cold conditions operation.Similarly, it uses traditional elastic insert as track damping in severe natural environment, delay
Rush the local damage that material also accelerates sleeper.
With the fast development of high-speed railway in recent years, the high-speed rail in China has moved towards the whole world, wherein in June, 2015,
China's high-speed rail has accepted Russia's not noise made in coughing or vomiting high-speed rail, along minimum temperature reach -48 DEG C.It is apparent that traditional elastic insert
It can no longer meet the requirement of service condition.For above situation, in order to adapt to extend elastic insert in limiting temperature
Service life, while improving the stability of track circuit.Urgent need will propose a kind of foaminess stratiform under limiting temperature
Composite elastic cushion block.
Summary of the invention
The purpose of the present invention is to provide a kind of heat insulation layer, the preparation method of heat insulation layer and the hairs being made from it
Alveolitoid lamellar composite formula elastic cushion block, The technical solution adopted by the invention is as follows:
A kind of heat insulation layer, each component and its weight proportion are as follows in the heat insulation layer raw material:
Methyl vinyl silicone rubber or methyl vinyl phenyl silicon rubber: 200 parts~240 parts；
Baihuixiong: 85 parts~90 parts；
Hydroxy silicon oil: 3~5 parts.
Preferably, the heat insulation layer, by weight including following components:
Methyl vinyl silicone rubber or methyl vinyl phenyl silicon rubber: 220 parts；
Baihuixiong: 88 parts；
Hydroxy silicon oil: 4 parts.
A kind of preparation method of heat insulation layer, comprising the following steps:
Step S01, baihuixiong is placed in vacuum oven, the vacuum drying 3h at 120 DEG C, removes the water in baihuixiong
Point, obtain dry baihuixiong.
Methyl vinyl silicone rubber or methyl ethylene that weight ratio is 220 parts is successively added in step S02 into mixer
Phenyl siloxane rubber, 88 parts of baihuixiongs being dried through step S01 and 4 parts of hydroxy silicon oil；Rotate clockwise revolving speed 80~
100r/min, at 100~110 DEG C of temperature, banburying 15min obtains the first mixture；By first mixture from mixer
Interior taking-up, it is static.
The first mixture in step S02 is put into mixer by step S03, in 80~100r/ of rotary rpm counterclockwise
Min, at 100~110 DEG C of temperature, banburying 15min obtains the second mixture.
The second mixture in step S03 is placed in vacuum oven, at 100~110 DEG C at Vacuum Heat by step S04
3h is managed, it is cooling, it is placed in mixer and cumyl peroxide vulcanizing agent is added, rotating clockwise 25~35r/min of revolving speed
Lower mixing 8min, obtains third mixture.
Step S05 takes out the third mixture in step S04, cooling, is placed in mixer, is rotating counterclockwise
Mixing 8min, obtains silicon rubber gross rubber under 25~35r/min of revolving speed.
Silicon rubber gross rubber in step S05 is placed in vulcanizing press by step S06, at 125 DEG C, 10MPa, pressure
5~8min is made, heat insulation layer is obtained.
A kind of expansion type lamellar composite formula elastic cushion block, including use microcellular foam material, be mounted on rigid rail and mixed mud
Backing layer between pillow and for rectangular parallelepiped structure, and be fitted on the Backing layer and kept the temperature for the Backing layer
Lower heat insulation layer and upper heat insulation layer.The lower heat insulation layer and upper heat insulation layer are all made of heat insulation layer
Preparation method preparation.
Further, the expansion type lamellar composite formula elastic cushion block, further includes sequentially passing through thermal insulation separation from top to bottom
The Static stiffness adjusting hole of thermosphere, Backing layer and the setting of lower heat insulation layer.
Further, expansion type lamellar composite formula elastic cushion block, further include sequentially pass through from top to bottom heat insulation layer,
Backing layer and the setting of lower heat insulation layer and two railway spike mounting holes corresponding with the screw thread channel nail hole on mixed mud pillow.
Further, expansion type lamellar composite formula elastic cushion block, further include sequentially pass through from top to bottom heat insulation layer,
The arcwall face that Backing layer and lower heat insulation layer are arranged and connect with any railway spike mounting hole.
Preferably, the arc radius of the arcwall face is 4.5~10mm.The diameter of the Static stiffness adjusting hole be 30~
120mm。
Further, the upper heat insulation layer with a thickness of 1~3mm.The Backing layer with a thickness of 10~
14mm.The lower heat insulation layer with a thickness of 1~3mm.
A kind of foam process of expansion type lamellar composite formula elastic cushion block, the expansion type lamellar composite formula elastic cushion block packet
The Backing layer for being mounted between rigid rail and mixed mud pillow and be rectangular parallelepiped structure is included, and be fitted on the Backing layer,
And lower heat insulation layer and upper heat insulation layer for Backing layer heat preservation.
The foam process the following steps are included:
It is anti-to be placed on high pressure by step K1 for the upper heat insulation layer bonded from top to bottom, Backing layer and lower insulation
It answers in kettle, be passed through low pressure CO 2 and be full of autoclave, to drain the air in autoclave.
Step K2 is passed through the high-pressure carbon dioxide of 20~28MPa into autoclave, permeates and be swollen 3h, static, lets out
Pressure obtains foaming intermediate product.
Foaming intermediate product in step K2 is placed in convection oven by step K3, at 170 DEG C, drying 30~
40min；At 200~250 DEG C, it is heat-treated 3h, obtains expansion type lamellar composite formula elastic cushion block.
Compared with prior art, the invention has the following advantages:
(1) present invention is dexterously in the upper and lower thermal insulation separation for being fitted with low thermal conductivity of the Backing layer of microcellular foam material
Thermosphere plays effectively function of heat insulation.Its limiting ambient temperature used can reach -60 DEG C~70 DEG C it has been confirmed by experiments that.
In addition, wrapping up Backing layer by heat insulation layer, it is effectively prevented the rigidity of the Backing layer change rate under limiting temperature
It is excessive.
(2) present invention offers a Static stiffness adjusting hole in upper heat insulation layer, Backing layer and lower heat insulation layer,
Being designed in this way is advantageous in that, both can guarantee enough rigidity supports, while reducing set deformation volume, and then extend elastic cushion block
Service life, reduce cost of equipment maintenance.
(3) present invention offers in upper heat insulation layer, Backing layer and lower heat insulation layer rests the head on mixed mud
The corresponding two railway spike mounting holes of screw thread channel nail hole, and it is additionally provided with the arcwall face connecting with railway spike mounting hole, it is designed in this way
It is advantageous in that, the redundancy of multiple hole carpenters square cun installation is provided, avoid cross directional stretch or compression to the additional injury of elastic cushion block.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to the attached drawing used required in embodiment
It is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to protection
The restriction of range to those skilled in the art without creative efforts, can also be attached according to these
Figure obtains other relevant attached drawings.
Fig. 1 is that elastic cushion installs explosion figure in the prior art.
Fig. 2 is the structural schematic diagram of expansion type lamellar composite formula elastic cushion block.
Fig. 3 is the preparation flow figure of heat insulation layer of the invention.
Fig. 4 is the frothing process flow diagram of composite elastic cushion block.
Fig. 5 is stable state flat band method test schematic of the invention.
Fig. 6 is present invention heat insulation layer thickness and coefficient of heat conduction curve at 60 DEG C.
Fig. 7 is present invention heat insulation layer thickness and coefficient of heat conduction curve at -50 DEG C.
In above-mentioned attached drawing, the corresponding component names of appended drawing reference are as follows:
1- elastic cushion block, 11- Static stiffness adjusting hole, 12- railway spike mounting hole, 13- arcwall face, 101- Backing layer, 102-
Lower heat insulation layer, the upper heat insulation layer of 101-.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and embodiments of the present invention include but is not limited to
The following example.
Embodiment 1
As described in Figure 3, a kind of heat insulation layer and preparation method thereof is present embodiments provided, wherein the heat insulation layer
Each component and its weight proportion are as follows in raw material: methyl vinyl silicone rubber or methyl vinyl phenyl silicon rubber: 220 parts；It is white
It is greyish black: 88 parts；Hydroxy silicon oil: 4 parts.
It is briefly described as follows the preparation method of the present embodiment, comprising the following steps:
Baihuixiong is placed in vacuum oven by the first step, the vacuum drying 3h at 120 DEG C, removes the moisture in baihuixiong,
Obtain dry baihuixiong.
Methyl vinyl silicone rubber or methyl ethylene that weight ratio is 220 parts is successively added in second step into mixer
Phenyl siloxane rubber, 88 parts of baihuixiongs being dried through step S01 and 4 parts of hydroxy silicon oil.Rotate clockwise revolving speed 80~
100r/min, at 100~110 DEG C of temperature, banburying 15min obtains the first mixture.By first mixture from mixer
Interior taking-up, it is static.
The first mixture in step S02 is put into mixer by third step, in 80~100r/ of rotary rpm counterclockwise
Min, at 100~110 DEG C of temperature, banburying 15min obtains the second mixture.
The second mixture in step S03 is placed in vacuum oven, the vacuum heat treatment at 100~110 DEG C by the 4th step
3h, it is cooling, it is placed in mixer and cumyl peroxide vulcanizing agent is added, in the case where rotating clockwise 25~35r/min of revolving speed
Mixing 8min obtains third mixture.
5th step takes out the third mixture in step S04, cooling, is placed in mixer, turns in rotation counterclockwise
Mixing 8min under 25~35r/min of speed, obtains silicon rubber gross rubber.
Silicon rubber gross rubber in step S05 is placed in vulcanizing press by the 6th step, at 125 DEG C, 10MPa, compacting
5~8min obtains heat insulation layer.
Embodiment 2
As shown in Fig. 2, a kind of expansion type lamellar composite formula elastic cushion block is present embodiments provided, it is intended that can
The rigidity support for guaranteeing elastic cushion block, reduces Static stiffness change rate, while guaranteeing the damping of elastic cushion block, buffering effect.Specifically
For, which includes using microcellular foam material, being mounted on rigid rail between mixed mud pillow and for rectangular parallelepiped structure
Backing layer 100, be fitted on the Backing layer 100 and the lower heat insulation layer for the Backing layer 100 heat preservation
102 and upper heat insulation layer 101, heat insulation layer 101, Backing layer 100 and lower insulation are sequentially passed through from top to bottom
The Static stiffness adjusting hole 11 of 102 setting of layer, sequentially passes through heat insulation layer 101, Backing layer 100 and lower heat preservation from top to bottom
The setting of thermal insulation layer 102 and with the corresponding two railway spike mounting holes 12 of screw thread channel nail hole on mixed mud pillow, and from top to bottom according to
It is secondary through upper heat insulation layer 101, Backing layer 100 and lower heat insulation layer 102 setting and with any railway spike mounting hole
The arcwall face 13 of 12 connections.In the present embodiment, the arc radius of arcwall face 13 is 4.5~10mm, Static stiffness adjusting hole 11
Diameter is 30~120mm.
In the present embodiment, the upper heat insulation layer 101, the length of Backing layer 100 and lower heat insulation layer 102 and
Width is all the same.Wherein, the thickness of upper heat insulation layer 101, Backing layer 100 and lower heat insulation layer 102 be respectively as follows: 1~
3mm, 10~14mm, 1~3mm.
Embodiment 3
Present embodiments provide a kind of foam process of expansion type lamellar composite formula elastic cushion block, the expansion type lamellar composite
Formula elastic cushion block includes being mounted between rigid rail and mixed mud pillow and is the Backing layer of rectangular parallelepiped structure, and is fitted in institute
State the lower heat insulation layer and upper heat insulation layer on Backing layer and for Backing layer heat preservation.Its foam process includes
Following steps:
It is anti-to be placed on high pressure by the first step for the upper heat insulation layer bonded from top to bottom, Backing layer and lower insulation
It answers in kettle, be passed through low pressure CO 2 and be full of autoclave, to drain the air in autoclave.
Second step is passed through the high-pressure carbon dioxide of 20~28MPa into autoclave, permeates and be swollen 3h, static, lets out
Pressure obtains foaming intermediate product.
Foaming intermediate product in step K2 is placed in convection oven by third step, at 170 DEG C, drying 30~
40min；At 200~250 DEG C, it is heat-treated 3h, obtains expansion type lamellar composite formula elastic cushion block.
In order to better illustrate the present invention the characteristics of and effect, spy use the load feelings of stable state flat band method testing elastic cushion block
Thermal conductivity under condition, the test of stable state flat band method are as shown in Figure 5:
Firstly, two pieces of elastic cushion blocks to be measured to be mounted on to the top and bottom of heater, the apparent surface of elastic cushion block to be measured with
Copper sheet is in close contact, herein, it is necessary to assure contact is reliable, should not with the presence of hole (simulating elastic cushion block actual installation state),
After elastic cushion block to be measured, heater are connected with water pipe, applying surge pressure on its surface is 150kN.
Then, heating power supply is connected, and adjusts and arrives suitable voltage, starts to heat, while opening temperature tracking control unit.
During heating, heating state can be controlled and understood by the measurement of each temperature measuring point.When beginning, first do not start water supply pump,
After the hot-face temperature of test specimen reaches certain level, restart water pump, upward lower water jacket is passed through cooling water.When test is by one section
Between after, the hot-face temperature and coldface temperature of test specimen start to tend towards stability.When temperature is stablized at 60 DEG C, carry out at regular intervals
Electrical power W read-record and temperature measurement, acquire the coefficient of heat conduction of elastic cushion block to be measured, at 60 DEG C, insulation
Thickness degree and coefficient of heat conduction curve are as shown in Figure 6.
In addition, the elastic cushion block to be measured is placed under -50 DEG C of environment, and apply identical surge pressure, measures thermal insulation separation
As shown in fig. 7, through applicant's validation trial, which has extremely low heat transfer for thermosphere thickness and the coefficient of heat conduction
Coefficient.
The present invention effectively blocks Conduction At Low Temperature to Backing layer dexterously in the thermal insulation layer setting up and down of Backing layer,
To prevent the rigidity of Backing layer change rate under limiting temperature excessive, the rigid support intensity of Backing layer ensure that.It is comprehensive
Upper described, the present invention has many advantages, such as that simple structure, long service life, enough rigid support intensity, suitable environment temperature are wide,
Compared with prior art, there is substantive distinguishing features outstanding and significant progress, have in technical field of rail traffic very high
Practical value and promotional value.
Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using
Design principle of the invention, and the non-creative variation worked and made is carried out on this basis, it should belong to of the invention
Within protection scope.
Claims (10)
1. a kind of heat insulation layer, which is characterized in that each component and its weight proportion are as follows in the heat insulation layer raw material:
Methyl vinyl silicone rubber or methyl vinyl phenyl silicon rubber: 200 parts~240 parts；
Baihuixiong: 85 parts~90 parts；
Hydroxy silicon oil: 3~5 parts.
2. a kind of heat insulation layer according to claim 1, which is characterized in that by weight including following components:
Methyl vinyl silicone rubber or methyl vinyl phenyl silicon rubber: 220 parts；
Baihuixiong: 88 parts；
Hydroxy silicon oil: 4 parts.
3. a kind of preparation method of heat insulation layer, which comprises the following steps:
Step S01, baihuixiong is placed in vacuum oven, the vacuum drying 3h at 120 DEG C, is removed the moisture in baihuixiong, is obtained
To dry baihuixiong；
Methyl vinyl silicone rubber or methyl vinyl phenyl that weight ratio is 220 parts is successively added in step S02 into mixer
Silicon rubber, 88 parts of baihuixiongs being dried through step S01 and 4 parts of hydroxy silicon oil；Rotating clockwise 80~100r/ of revolving speed
Min, at 100~110 DEG C of temperature, banburying 15min obtains the first mixture；First mixture is taken out of mixer
Out, static；
The first mixture in step S02 is put into mixer by step S03,80~100r/min of rotary rpm counterclockwise,
At 100~110 DEG C of temperature, banburying 15min obtains the second mixture；
The second mixture in step S03 is placed in vacuum oven by step S04, the vacuum heat treatment 3h at 100~110 DEG C,
It is cooling, it is placed in mixer and cumyl peroxide vulcanizing agent, the mixing in the case where rotating clockwise 25~35r/min of revolving speed is added
8min obtains third mixture；
Step S05 takes out the third mixture in step S04, cooling, is placed in mixer, in rotary rpm counterclockwise
Mixing 8min under 25~35r/min, obtains silicon rubber gross rubber；
Silicon rubber gross rubber in step S05 is placed in vulcanizing press by step S06, at 125 DEG C, 10MPa, compacting 5~
8min obtains heat insulation layer.
4. a kind of expansion type lamellar composite formula elastic cushion block, which is characterized in that including using microcellular foam material, being mounted on rigid rail
Mixed mud pillow between and be rectangular parallelepiped structure Backing layer (100), and be fitted on the Backing layer (100) and
Lower heat insulation layer (102) and upper heat insulation layer (101) for the Backing layer (100) heat preservation；The lower insulation
Layer (102) and upper heat insulation layer (101) are all made of preparation method preparation as claimed in claim 3.
5. a kind of expansion type lamellar composite formula elastic cushion block according to claim 4, which is characterized in that further include from up to
Under sequentially pass through heat insulation layer (101), Backing layer (100) and lower heat insulation layer (102) setting Static stiffness adjustment
Hole (11).
6. a kind of expansion type lamellar composite formula elastic cushion block according to claim 4 or 5, which is characterized in that further include from
Sequentially passed through under upper heat insulation layer (101), Backing layer (100) and lower heat insulation layer (102) setting and with mixed mud
The corresponding two railway spike mounting holes (12) of screw thread channel nail hole on soil pillow.
7. a kind of expansion type lamellar composite formula elastic cushion block according to claim 6, which is characterized in that further include from up to
Under sequentially pass through heat insulation layer (101), Backing layer (100) and lower heat insulation layer (102) setting and with it is any described
The arcwall face (13) of railway spike mounting hole (12) connection.
8. a kind of expansion type lamellar composite formula elastic cushion block according to claim 5, which is characterized in that the arcwall face
(13) arc radius is 4.5~10mm；The diameter of the Static stiffness adjusting hole (11) is 30~120mm.
9. a kind of expansion type lamellar composite formula elastic cushion block according to claim 6, which is characterized in that the upper thermal insulation separation
Thermosphere (101) with a thickness of 1~3mm；The Backing layer (100) with a thickness of 10~14mm；The lower heat insulation layer
(102) with a thickness of 1~3mm.
10. a kind of foam process of expansion type lamellar composite formula elastic cushion block, which is characterized in that the expansion type lamellar composite formula
Elastic cushion block includes being mounted between rigid rail and mixed mud pillow and is the Backing layer (100) of rectangular parallelepiped structure, and is fitted in
Lower heat insulation layer (102) and upper insulation on the Backing layer (100) and for the Backing layer (100) heat preservation
Layer (101)；
The foam process the following steps are included:
Step K1, by the upper heat insulation layer (101) bonded from top to bottom, Backing layer (100) and lower heat insulation layer (102)
It is placed in autoclave, is passed through low pressure CO 2 and is full of autoclave, to drain the air in autoclave；
Step K2, is passed through the high-pressure carbon dioxide of 20~28MPa into autoclave, infiltration and swelling 3h, static, pressure release,
Obtain foaming intermediate product；
Foaming intermediate product in step K2 is placed in convection oven by step K3, at 170 DEG C, dries 30~40min；?
At 200~250 DEG C, it is heat-treated 3h, obtains expansion type lamellar composite formula elastic cushion block.
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