CN110193230A - Pressure-vessel of crack resistence and preparation method thereof - Google Patents
Pressure-vessel of crack resistence and preparation method thereof Download PDFInfo
- Publication number
- CN110193230A CN110193230A CN201910285460.6A CN201910285460A CN110193230A CN 110193230 A CN110193230 A CN 110193230A CN 201910285460 A CN201910285460 A CN 201910285460A CN 110193230 A CN110193230 A CN 110193230A
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- vessel
- fretting map
- pressure
- elastomer layer
- crack resistence
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- 238000002360 preparation method Methods 0.000 title abstract description 5
- 229920001971 elastomer Polymers 0.000 claims abstract description 50
- 239000000806 elastomer Substances 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000010146 3D printing Methods 0.000 claims abstract description 11
- 206010000269 abscess Diseases 0.000 claims abstract description 11
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 67
- 229920001169 thermoplastic Polymers 0.000 claims description 38
- 239000004416 thermosoftening plastic Substances 0.000 claims description 38
- 238000007639 printing Methods 0.000 claims description 31
- 239000004088 foaming agent Substances 0.000 claims description 21
- 238000005187 foaming Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000001802 infusion Methods 0.000 claims 1
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000007710 freezing Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000006173 Good's buffer Substances 0.000 abstract description 4
- 239000013013 elastic material Substances 0.000 description 35
- 238000005336 cracking Methods 0.000 description 16
- 230000005540 biological transmission Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012611 container material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- -1 olefin hydrocarbons Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
- B01D35/308—Made of at least two different materials, e.g. metal and plastic
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses pressure-vessels of crack resistence and preparation method thereof, it should include vessel and fretting map elastomer layer, the fretting map elastomer layer is attached directly to the inner wall of the vessel, and the fretting map elastomer layer is a surface skining, and inside is full of the structure of abscess;The fretting map elastomer layer is the inner wall that the vessel is attached to by 3D printing, the pressure-vessel is when being pressurized, the fretting map elastomer layer can play good buffer function, and then offset the volume expansion because of caused by water freezing, guarantee normal use of the product in low temperature.Meanwhile the fretting map elastomer layer is attached on vessel by the present invention using 3D printing technique, without carrying out the exploitation of mold, more efficient and cost is reduced.
Description
Technical field
The present invention relates to pressure-vessels of crack resistence and preparation method thereof.
Background technique
Institute's Container volume change inside pressure-vessel Chang Yin and the variation for causing pressure, when pressure reaches certain value
Or when being chronically at larger, pressure-vessel cracking is easily led to, for example the filter element body shell of filter easily cracks in winter
Phenomenon, since environment temperature is in subzero, water freezing can cause volume expansion, squeeze the lesser body housing of shrinkage,
Filter element body shell is caused to crack.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide the pressure-vessel of crack resistence and its preparation sides
Method.
The present invention is achieved through the following technical solutions: a kind of pressure-vessel of crack resistence, including vessel and micro- hair
Elastomer layer is steeped, the fretting map elastomer layer is attached directly to the inner wall of the vessel, the fretting map elastomer layer
For a surface skining, inside is full of the structure of abscess;The fretting map elastomer layer is that the container is attached to by 3D printing
The inner wall of ontology.
Preferably, the fretting map elastomer layer is made of fretting map thermoplastic elastomer (TPE);The fretting map thermoplastic elastomehc
Property body be made of thermoplastic elastomer (TPE) and foaming agent, the mass fraction of the foaming agent is 2%~5%.
Preferably, the mass fraction of the foaming agent is 3%.
Preferably, the vessel includes side wall and bottom wall, it is provided in the side wall and the bottom wall described micro-
Foaming elastomer layer.
The present invention also provides a kind of methods for being used to prepare crack resistence pressure-vessel, comprising: step 1) is by thermoplastic elastomehc
Property body and foaming agent be mixed evenly, the mass fraction of the foaming agent is 2%~5%;Step 2) is by micro- hair
It steeps thermoplastic elastomer (TPE) to be added in printer, and is successively beaten the fretting map thermoplastic elastomer (TPE) step by step using printing head
On print to the bottom wall and side wall of vessel, fretting map elastomer layer is formed in the vessel inner wall.
Preferably, the printing head includes extruder head, heating part and thermal sleeve, the extruder head include main part and
Oral area, the heating part are wrapped in the main part periphery, and the thermal sleeve is embedded in the inside setting of the main part, described
Oral area is tilted relative to the main part.
Preferably, the oral area tilts 135 °~170 ° relative to the main part.
Preferably, the mass fraction of the foaming agent is 3%.
Preferably, the vessel is cylindrical container.
Preferably, the vessel is the container with irregular shape.
The present invention adheres to fretting map elastomer layer in vessel, and the inside of the fretting map elastomer layer is full of abscess,
The size of abscess is minimum, and cell density is larger, and then will form a surface skining, and inside is full of the structure of abscess, this
Structure makes fretting map elastomer layer surface form hole-closing structure, will not absorb the object contained in pressure-vessel, while keeping good
Good mechanical property.In this way, due to the encapsulated one layer of fretting map elastomer layer in the inside in vessel, the pressure-vessel by
When pressure, which can play good buffer function, and then offset the volume expansion because of caused by water freezing,
Guarantee normal use of the product in low temperature.Meanwhile the present invention is attached by fretting map thermoplastic elastic material by printing technique
To vessel inner wall, be not only able to increase the adhesive force of the fretting map elastomer layer on vessel, and utilize 3D
Printing technique carry out it is encapsulated without carrying out the exploitation of mold, it is more efficient and cost is reduced;Meanwhile it being carried out using 3D printing
Vessel it is encapsulated, the vessel with irregular shape can be applicable in simultaneously, thus this kind of processing method is very easy
And processing method is more flexible.
Detailed description of the invention
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical solution of the present invention
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is the stereoscopic schematic diagram of pressure-vessel of the present invention.
Fig. 2 is the perspective diagram of pressure-vessel of the present invention.
Fig. 3 is the floor map of printing head of the present invention.
Fig. 4 is the schematic cross-sectional view of printing head of the present invention.
Fig. 5 is the enlarged diagram in Fig. 4 of the present invention at a.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out to the technical solution in inventive embodiments clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, those of ordinary skill in the art's every other reality obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
Reference book attached drawing 1 and attached drawing 2, a kind of pressure-vessel A of crack resistence, including vessel 1 and fretting map bullet
Property body layer 2, which is made of fretting map thermoplastic elastic material, which is direct
It is attached to the inner wall of the vessel 1, which is cylindrical container or other rules or irregular has a depthkeeping
The container of degree.Referring to attached drawing 2, which includes side wall 11 and bottom wall 12, and the side wall 11 and bottom wall 12 are internally provided with one
Fretting map elastomer layer 2, the inside of the fretting map elastomer layer 2 are full of abscess, and the size of abscess is minimum, and cell density compared with
Greatly, and then it will form a surface skining, inside is full of the structure of abscess, and this structure forms fretting map elastomer layer surface
Hole-closing structure will not absorb the object contained in pressure-vessel, while keep good mechanical property.In this way, due in container
The encapsulated one layer of fretting map elastomer layer in the inside of ontology, when being pressurized, which can rise the pressure-vessel
To good buffer function, and then the volume expansion because of caused by water freezing is offset, guarantees normal use of the product in low temperature;
Meanwhile after the encapsulated fretting map elastomer layer of the pressure-vessel, defect present in product self structure can be overcome, it can be well
Problem of Cracking caused by avoiding because of container discontinuity, it is encapsulated after pressure-vessel performance it is more stable, while to the greatest extent
Reduce production cycle and cost.
Referring to attached drawing 3 to attached drawing 5, which passes through 3D printing technique for fretting map thermoplastic elastomer (TPE)
The inner wall of file printing to the vessel 1 forms the fretting map elastomer layer 2.3D printing spray head B includes extruder head 31, is added
Hot portion 32 and thermal sleeve 33, the upper end of 3D printing spray head B may be provided with a connector 30, which can be a screw rod,
The connector 30 can be bonded by one hex nut 30a of rotation with printer, and then by the connector 30 and be printed
Machine is attached.The extruder head 31 includes main part 31a interconnected and oral area 31b, which can utilize heating coil
The periphery main part 31a for being wrapped in extruder head carries out computer heating control, which is then embedded in the main part 31a's of extruder head
Inside, and then the printing material of 31 rear end of extruder head is prevented to be heated the influence in portion 32 and soften in advance;In addition, the extruder head
Oral area 31b relative to the extruder head main part 31a have an inclination angle beta, it is preferred that the inclination angle beta range exists
Between 135 °~170 °, in this way, the oral area 31b of the printing head is designed as the gradient for having certain, can guarantee to this by
When the side wall of pressure vessel carries out encapsulated, the fretting map elastomer layer of printing is set to fit closely with container inner wall, and then to appearance
Device plays a very good protection.
In addition, directly launching foaming for directly launching foamed material or quadric injection mould flexible glue inside container
Material easily leads to container expansion discontinuity, and anti-swelliong power is not strong;And quadric injection mould flexible glue requires mold on high, mold
Development process is complicated, and the period is longer, at high cost, and fretting map thermoplastic elastic material is attached in vessel by printing
Wall is not only able to increase the adhesive force of the fretting map elastomer layer on vessel, and is wrapped using 3D printing technique
Glue is not necessarily to carry out the exploitation of mold, more efficient and cost is reduced;Meanwhile the packet of vessel is carried out using 3D printing
Glue, can be applicable in the vessel with irregular shape simultaneously, thus this kind of processing method be very easy and processing method more
Flexibly.
The fretting map elastomer layer will be described in detail below.The fretting map elastomer layer 2 is by fretting map thermoplasticity
Elastomer is made, which includes but is not limited to olefin hydrocarbons thermoplasticity elastic material, polyurethane-type thermoplastic
Other thermoplastic elastomer (s)s such as elastic material, the thermoplastic elastomer (TPE) in following embodiment is same raw material.
Embodiment one:
Under room temperature, the thermoplastic elastomer (TPE) of 100g is added in blender, then adds the foaming agent that mass fraction is 2%
Enter to mix in the blender with the thermoplastic elastomer (TPE) and carries out uniform stirring formation fretting map thermoplastic elastic material;
The fretting map thermoplastic elastic material after mixing evenly is added in printer and is printed: by the container sheet
Body 1 is placed on objective table, which can be rotated under the drive of transmission parts with certain speed, printing spray
Head B is then protruded into the vessel 1 to be matched with the rotation of the vessel on objective table, will using the oral area 31b of extruder head
The fretting map thermoplastic elastic material is printed to the bottom wall 12 of the vessel, so that it is micro- first to form bottom wall on bottom wall 12
Foaming elastomer layer;And then, printing head B prints the side wall 11 of the pressure-vessel, will using the extruder head 31
The printing of fretting map thermoplastic elastic material is attached on the side wall 11 of the vessel, so that it is micro- to form side wall on side wall 11
Foaming elastomer layer prints to complete the fretting map thermoplastic elastic material to forming fretting map elasticity on vessel
The process of body layer 2.
Embodiment two
Under room temperature, the thermoplastic elastomer (TPE) of 100g is added in blender, then adds the foaming agent that mass fraction is 3%
Enter to mix in the blender with the thermoplastic elastomer (TPE) and carries out uniform stirring formation fretting map thermoplastic elastic material;
The fretting map thermoplastic elastic material after mixing evenly is added in printer and is printed: by the container sheet
Body 1 is placed on objective table, which can be rotated under the drive of transmission parts with certain speed, printing spray
Head B is then protruded into the vessel 1 to be matched with the rotation of the vessel on objective table, will using the oral area 31b of extruder head
The fretting map thermoplastic elastic material is printed to the bottom wall 12 of the vessel, so that it is micro- first to form bottom wall on bottom wall 12
Foaming elastomer layer;And then, printing head B prints the side wall 11 of the pressure-vessel, will using the extruder head 31
The printing of fretting map thermoplastic elastic material is attached on the side wall 11 of the vessel, so that it is micro- to form side wall on side wall 11
Foaming elastomer layer prints to complete the fretting map thermoplastic elastic material to forming fretting map elasticity on vessel
The process of body layer 2.
Embodiment three
Under room temperature, the thermoplastic elastomer (TPE) of 100g is added in blender, then adds the foaming agent that mass fraction is 4%
Enter to mix in the blender with the thermoplastic elastomer (TPE) and carries out uniform stirring formation fretting map thermoplastic elastic material;
The fretting map thermoplastic elastic material after mixing evenly is added in printer and is printed: by the container sheet
Body 1 is placed on objective table, which can be rotated under the drive of transmission parts with certain speed, printing spray
Head B is then protruded into the vessel 1 to be matched with the rotation of the vessel on objective table, will using the oral area 31b of extruder head
The fretting map thermoplastic elastic material is printed to the bottom wall 12 of the vessel, so that it is micro- first to form bottom wall on bottom wall 12
Foaming elastomer layer;And then, printing head B prints the side wall 11 of the pressure-vessel, will using the extruder head 31
The printing of fretting map thermoplastic elastic material is attached on the side wall 11 of the vessel, so that it is micro- to form side wall on side wall 11
Foaming elastomer layer prints to complete the fretting map thermoplastic elastic material to forming fretting map elasticity on vessel
The process of body layer 2.
Example IV
Under room temperature, the thermoplastic elastomer (TPE) of 100g is added in blender, then adds the foaming agent that mass fraction is 5%
Enter to mix in the blender with the thermoplastic elastomer (TPE) and carries out uniform stirring formation fretting map thermoplastic elastic material;
The fretting map thermoplastic elastic material after mixing evenly is added in printer and is printed: by the container sheet
Body 1 is placed on objective table, which can be rotated under the drive of transmission parts with certain speed, printing spray
Head B is then protruded into the vessel 1 to be matched with the rotation of the vessel on objective table, will using the oral area 31b of extruder head
The fretting map thermoplastic elastic material is printed to the bottom wall 12 of the vessel, so that it is micro- first to form bottom wall on bottom wall 12
Foaming elastomer layer;And then, printing head B prints the side wall 11 of the pressure-vessel, will using the extruder head 31
The printing of fretting map thermoplastic elastic material is attached on the side wall 11 of the vessel, so that it is micro- to form side wall on side wall 11
Foaming elastomer layer prints to complete the fretting map thermoplastic elastic material to forming fretting map elasticity on vessel
The process of body layer 2.
Control group 1
Under room temperature, the thermoplastic elastomer (TPE) of 100g is added in blender, then adds the foaming agent that mass fraction is 1%
Enter to mix in the blender with the thermoplastic elastomer (TPE) and carries out uniform stirring formation fretting map thermoplastic elastic material;
The fretting map thermoplastic elastic material after mixing evenly is added in printer and is printed: by the container sheet
Body 1 is placed on objective table, which can be rotated under the drive of transmission parts with certain speed, printing spray
Head B is then protruded into the vessel 1 to be matched with the rotation of the vessel on objective table, will using the oral area 31b of extruder head
The fretting map thermoplastic elastic material is printed to the bottom wall 12 of the vessel, so that it is micro- first to form bottom wall on bottom wall 12
Foaming elastomer layer;And then, printing head B prints the side wall 11 of the pressure-vessel, will using the extruder head 31
The printing of fretting map thermoplastic elastic material is attached on the side wall 11 of the vessel, so that it is micro- to form side wall on side wall 11
Foaming elastomer layer prints to complete the fretting map thermoplastic elastic material to forming fretting map elasticity on vessel
The process of body layer 2.
Control group 2
Embodiment one:
Under room temperature, the thermoplastic elastomer (TPE) of 100g is added in blender, then adds the foaming agent that mass fraction is 6%
Enter to mix in the blender with the thermoplastic elastomer (TPE) and carries out uniform stirring formation fretting map thermoplastic elastic material;
The fretting map thermoplastic elastic material after mixing evenly is added in printer and is printed: by the container sheet
Body 1 is placed on objective table, which can be rotated under the drive of transmission parts with certain speed, printing spray
Head B is then protruded into the vessel 1 to be matched with the rotation of the vessel on objective table, will using the oral area 31b of extruder head
The fretting map thermoplastic elastic material is printed to the bottom wall 12 of the vessel, so that it is micro- first to form bottom wall on bottom wall 12
Foaming elastomer layer;And then, printing head B prints the side wall 11 of the pressure-vessel, will using the extruder head 31
The printing of fretting map thermoplastic elastic material is attached on the side wall 11 of the vessel, so that it is micro- to form side wall on side wall 11
Foaming elastomer layer prints to complete the fretting map thermoplastic elastic material to forming fretting map elasticity on vessel
The process of body layer 2.
Experimental example
1, microscopic examination
Fretting map thermoplastic elastomer (TPE) after molding using microscopic, by embodiment one to example IV and right
It tests according to fretting map thermoplastic elastomer (TPE) obtained is organized, when the cell density of the fretting map thermoplastic elastomer (TPE) is larger and locates
It is to meet the requirement of this material in closed pore state.
The result of cell density and closed pore state is examined under 1 microscope of table
It can be seen that when setting 1% for the mass fraction of the foaming agent, though the fretting map thermoplastic elastomer (TPE)
It so is also at closed pore state, but the quantity of abscess is few, so fretting map thermoplastic elastomehc obtained by the foaming agent under the state
The cushion performance of property body is poor;When setting 6% for the mass fraction of the foaming agent, the bubble of the fretting map thermoplastic elastomer (TPE)
The aperture in hole can become larger, and then be easy to cause the bad control of closed pore, so that the quality of manufactured fretting map thermoplastic elastomer (TPE) is held
Vulnerable to influence, so the mass fraction most preferably 2%-5% of the foaming agent in the fretting map thermoplastic elastomer (TPE), in this way, should
It is full of abscess inside fretting map thermoplastic elastomer (TPE), and cell density is larger, will form a surface skining, inside is full of micropore
Structure (as shown in Fig. 1), this structure make fretting map elastomer layer surface formed hole-closing structure, will not absorb by pressure-volume
The object contained in device, while being able to maintain good mechanical property.
2, frost resistance is tested
Frost resistance test will be carried out in embodiment one to pressure-vessel made from example IV, it will will be after secondary injection molding
Pressure-vessel respectively at -20 DEG C, frost resistance test is carried out under -30 DEG C and -40 DEG C of cryogenic conditions, it is as a result as follows:
The frost resistance of the pressure-vessel under -20 DEG C/- 30 DEG C/- 40 DEG C of cryogenic conditions of table 2 is tested
Test temperature | -20℃ | -30℃ | -40℃ |
Embodiment one | 18h cracking | 15h cracking | 8h cracking |
Embodiment two | It cracks for 24 hours | 18h cracking | 12h cracking |
Embodiment three | 22h cracking | 16h cracking | 10h cracking |
Example IV | 20h cracking | 16h cracking | 10h cracking |
Control group 1 | 14h cracking | 12h cracking | 6h cracking |
When the foaming agent mass fraction in the fretting map thermoplastic elastomer (TPE) be 2% to 5% when, the pressure-vessel it is freeze proof
Property tolerance time obviously extended, when being pressurized, internal fretting map elastomer layer can play the pressure-vessel
Good buffer function, and then the volume expansion because of caused by water freezing is offset, guarantee normal use of the product in low temperature.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (10)
1. a kind of pressure-vessel of crack resistence, which is characterized in that including vessel and fretting map elastomer layer, the fretting map
Elastomer layer is attached directly to the inner wall of the vessel, and the fretting map elastomer layer is a surface skining, and inside is full of
The structure of abscess;The fretting map elastomer layer is the inner wall that the vessel is attached to by 3D printing.
2. the pressure-vessel of crack resistence according to claim 1, which is characterized in that the fretting map elastomer layer is by micro- hair
Bubble thermoplastic elastomer (TPE) is made;The fretting map thermoplastic elastomer (TPE) is made of thermoplastic elastomer (TPE) and foaming agent, the foaming
The mass fraction of agent is 2%~5%.
3. the pressure-vessel of crack resistence according to claim 2, which is characterized in that the mass fraction of the foaming agent is
3%.
4. the pressure-vessel of crack resistence according to claim 1, which is characterized in that the vessel includes side wall and bottom
The fretting map elastomer layer is provided in wall, the side wall and the bottom wall.
5. a kind of method for being used to prepare crack resistence pressure-vessel, which is characterized in that including
Thermoplastic elastomer (TPE) and foaming agent be mixed evenly forming fretting map thermoplastic elastomer (TPE), the hair by step 1)
The mass fraction of infusion is 2%~5%;
The fretting map thermoplastic elastomer (TPE) is added in printer step 2), and utilizes printing head by the fretting map thermoplastic
Property elastomer successively printed to the bottom wall and side wall of vessel step by step, the vessel inner wall formed fretting map bullet
Property body layer.
6. a kind of method for being used to prepare crack resistence pressure-vessel according to claim 5, which is characterized in that the printing
Spray head includes extruder head, heating part and thermal sleeve, and the extruder head includes main part and oral area, and the heating part is wrapped in institute
Main part periphery is stated, the thermal sleeve is embedded in the inside setting of the main part, and the oral area inclines relative to the main part
Tiltedly.
7. a kind of printing head for being used to prepare crack resistence pressure-vessel according to claim 6, which is characterized in that described
Oral area tilts 135 °~170 ° relative to the main part.
8. the method according to claim 5 for preparing crack resistence pressure-vessel, which is characterized in that the quality of the foaming agent
Score is 3%.
9. the method according to claim 5 for preparing crack resistence pressure-vessel, which is characterized in that the vessel is circle
Column container.
10. the method according to claim 5 for preparing crack resistence pressure-vessel, which is characterized in that the vessel is
Container with irregular shape.
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CN206749045U (en) * | 2017-05-27 | 2017-12-15 | 张彩芬 | A kind of printing nozzle on 3D printer |
CN107139467A (en) * | 2017-06-21 | 2017-09-08 | 泉州市比邻三维科技有限公司 | A kind of conveying smoothly 3 D-printing head |
CN108312527A (en) * | 2017-06-21 | 2018-07-24 | 泉州市比邻三维科技有限公司 | A kind of 3 D-printing head of finished product integral type engagement |
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