CN105328915B - A kind of production equipment of cross-linked polyolefin microporous foam sheet material - Google Patents
A kind of production equipment of cross-linked polyolefin microporous foam sheet material Download PDFInfo
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- CN105328915B CN105328915B CN201510768151.6A CN201510768151A CN105328915B CN 105328915 B CN105328915 B CN 105328915B CN 201510768151 A CN201510768151 A CN 201510768151A CN 105328915 B CN105328915 B CN 105328915B
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- carbon dioxide
- supercritical carbon
- cooling device
- jacket
- production equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of production equipment of cross-linked polyolefin microporous foam sheet material, the production equipment includes the activation kettle, agitating device, three ranks extrusion unit, combination cooling device and the shaped device that are sequentially connected, the three ranks extrusion unit includes parallel equidirectional two-screw extruder, intermeshing counter rotating twin screw extruder, jacket reactor and a single screw extrusion machine, jacket reactor and single screw extrusion machine are sequentially connected after two double screw extruders parallel connection, supercritical carbon dioxide spray nozzle is set in the combination cooling device.Three ranks extrusion unit can control resin melt from after double screw extruder extrusion into pressure during single screw extrusion machine, it is ensured that safety in production；Supercritical carbon dioxide is sufficiently mixed so as to realize preferable microporous foam effect with resin melt in combination cooling device.
Description
Technical field
Set the present invention relates to polyalkene foaming field, more particularly to a kind of production of cross-linked polyolefin microporous foam sheet material
It is standby.
Background technology
In resin foamed material commercial applications many years of thermoplastic polymer production, traditional foaming technique usually hinders
Its further development in existing field.The microporous foam technology for growing up in recent years is expected to solve traditional foaming technique
Some shortcomings for existing and deficiency.Microcellular foam material refer to cell diameter at 1-10 μm, cell density is 109-1012/cm3It
Between foamed material.At present, supercritical carbon dioxide is physical blowing agent most commonly used in prepared by micro-foaming material.Root
Continuity degree difference according to operation mainly has the methods such as batch-foamed, semicontinuous foaming, continuous extrusion foaming.Batch process and partly connect
Time-consuming for continuous method, it is impossible to meets industrial demand, is mainly used in theoretical research.And it is consistent with actual plastic processing
The appearance of continuous extrusion foaming method makes it possible the practical application of microcellular foam material.
Can realize that continous way extrudes microporous foam with screw extruder, general process is：Resin is first in screw rod
Plasticizing fusion, then will obtain resin and melts in supercritical carbon dioxide resin by injection melt by the shear-mixed effect of screw rod
Body and carbon dioxide mix material, compound enters mouth mold, quick pressure releasing and nucleation foams, then rapid cooling and solidifying.It is Chinese special
Sharp CN103963306 describes a kind of production equipment of overcritical PP physical blowings sheet material, and the system is by double screw extruder, list
Screw extruder is used in series, and supercritical carbon dioxide is entered in extruder by the output of gas injection equipment.Two series connection of screw machine
Resin melt can be made to be sufficiently mixed melting, and accelerate the carbon dioxide solubility to enter resin melt, but double screw extruder is defeated
Go out pressure for 35-45MPA, the pressure that single screw extrusion machine can bear is 20-30MPA, material from double screw extruder export into
When entering single screw extrusion machine, due to the presence of pressure differential, it may occur that material sprays the danger of even blast.Additionally, super face
Boundary's carbon dioxide mixes with resin melt in an extruder, and material viscosity can be caused to raise, and is detained in an extruder, and influence is final
Fretting map effect.
The content of the invention
The present invention in view of the shortcomings of the prior art, the invention provides a kind of production of cross-linked polyolefin microporous foam sheet material
Equipment, it can realize the Stress control that screw extruder is used in series, and resin melt will not in an extruder be detained, finally reach
To preferable microporous foam effect.
The technical solution adopted by the present invention is as follows：A kind of production equipment of cross-linked polyolefin microporous foam sheet material is included successively
The activation kettle of connection, agitating device, three ranks extrude unit, combination cooling device and shaped device, and three rank extrudes unit bag
A parallel equidirectional two-screw extruder, intermeshing counter rotating twin screw extruder, jacket reactor and a single screw rod is included to squeeze
Go out machine, jacket reactor and single screw extrusion machine are sequentially connected after two double screw extruders parallel connection；The combination cooling
Device includes a tubular shell with entrance point and the port of export, and a buffering mould is disposed radially at nearly case entrances end
Block, the buffer module constitutes a cavity with the shell wall at entrance point, referred to as primary surge chamber, at nearly housing outlet end radially
One buffer module is set, and the buffer module constitutes secondary buffering room with the shell wall at the port of export, and enclosure interior is in two bufferings
Intermodule is provided for conveying the steel pipe and resin baffle plate of supercritical carbon dioxide, and the steel pipe is respectively in two buffer modules
UNICOM of place, wherein the end of two steel pipes is provided with carbon dioxide shower nozzle, sets one overcritical two at the nearly port of export of hull outside
Carbonoxide entrance, the entrance and the steel pipe UNICOM of conveying supercritical carbon dioxide, set one at the nearly entrance point of hull outside
Supercritical carbon dioxide with housing UNICOM is exported；The port of export of the shaped device close to combination cooling device.
In a preferred embodiment, two double screw extruders include cooling device for charging barrel, the material respectively
Cylinder cooling device using supercritical carbon dioxide as cooling medium, it include coolant jacket outside barrel and with coolant jacket phase
Cooling tube even, coolant jacket is provided with supercritical carbon dioxide import, and cooling tube one end is provided with supercritical carbon dioxide outlet, cold
Check valve control supercritical carbon dioxide is but set between set and cooling tube and flows to cooling tube from coolant jacket, in cooling device for charging barrel
Supercritical carbon dioxide outlet and the chuck import UNICOM of the jacket reactor, the overcritical dioxy in cooling device for charging barrel
Change the JO UNICOM of carbon import and the reactor.
In a preferred embodiment, resin baffle plate is dimensioned so as to housing caliber in the combination cooling device
2/3 ~ 3/4, the length of steel pipe for conveying supercritical carbon dioxide stream is set as 6 ~ 8 times of steel pipe caliber.
In a preferred embodiment, the shaped device is flat mouth mould.
Present invention also offers a kind of production method of the cross-linked polyolefin microporous foam sheet material using above-mentioned production equipment.
A kind of production method of cross-linked polyolefin microporous foam sheet material, comprises the following steps：
（1）By weight, 100 parts of basic resins, 1-10 parts of embedding medium, 0.1-10 parts of conductivity accelerator are placed on activation
In kettle, injection pressure is the supercritical carbon dioxide of 30-40MPa, and adjustment carbon dioxide temperature is 20-100 DEG C, at closing activation
Reason 10-30 minute, pressure release obtains activated resin, and wherein basic resin is selected from COPP, linear high-density polyethylene, linearly
Low density polyethylene (LDPE) or their mixture, embedding medium are selected from polyoxyethylene（20）- mono succinate tristerin, polyoxy second
Alkene（20）- mono succinate tripalmitin or polyoxyethylene（20）- mono succinate glyceryl laurate ester, conductivity accelerator is selected from
Active nano-ZnO or active nano-aluminium oxide.
（2）By weight, by 100 parts of steps（1）The activated resin of middle acquisition, 1-10 parts of nucleator, 1-20 parts of maleic acid
Acid anhydride graft polyolefin crosslinking agent mix with 1-10 parts of blowing promotor and high-speed stirred 10-30 minute obtain resin mixture, it is described into
Core agent is selected from nano barium sulfate, nanomete talc powder, and the blowing promotor is selected from molecular distillation glycerin monostearate, molecular distillation
Glyceryl monooleate or molecular distillation monopalmitin.
（3）By step（2）The resin mixture of gained is averagely added to a parallel equidirectional two-screw and extrudes by hopper
In machine and an intermeshing counter rotating twin screw extruder, it is warming up to 135-150 DEG C of melting and forms resin melt, resin melt is from described
Two double screw extruders extrude into jacket reactor, control the pressure of jacket reactor in 35-45MPa, resin melt with
Enter the further mixed melting of single screw extrusion machine afterwards.
（4）Resin melt enters combination cooling device from after single screw extrusion machine extrusion, and supercritical carbon dioxide is injected
Combination cooling device, supercritical carbon dioxide sprays from the shower nozzle of steel pipe and mixing is contacted with resin melt.
（5）When pressure reaches 20-30MPa at combination cooling device openend, open discharging opening compound and filled from shaping
Put extrusion molding.
In a preferred embodiment, the basic resin body in step 1 is COPP, and its melt index is 6.5
Gram/10 minutes.
In a preferred embodiment, the basic resin body in step 1 is COPP, linear high-density polyethylene
With the mixture of LLDPE, the wherein melt index of COPP is 6.5 grams/10 minutes.
In a preferred embodiment, in step 5 compound from flat mouth mould extrusion molding.
In production method of the invention, the crosslinking of vistanex occurs in step（3）.In double screw extruder, change
Learn crosslinking agent to be decomposed at 135-150 DEG C, resin is chemically crosslinked during mixing, then into jacket reactor
In, it is physical crosslinking under the balance of pressure and heat.
Beneficial effects of the present invention：
The setting of jacket reactor can control resin melt to be squeezed from twin-screw in three rank extrusion groups of production equipment of the present invention
Go out after machine is extruded to enter pressure during single screw extrusion machine, it is ensured that safety in production；Resin can be successively complete in three ranks extrusion unit
Into physics and chemical crosslinking process, solve the problems, such as with chemical cross-linking agent be crosslinked material be adhered to carrier band, can also make up
The not enough vistanex so as to obtain high intensity of heat radiation cross-linking method, is conducive to final fretting map effect.
The cooling device for charging barrel of the double screw extruder in three rank extrusion groups uses supercritical carbon dioxide to be situated between as cooling
Matter, it realizes recycling for cooling medium supercritical carbon dioxide, not only avoid traditional water with jacket reactor combination
The defect of cold mode, also saves cooling medium, reduces production cost.
When producing cross-linked polyolefin microporous foam sheet material using this production equipment, resin is with supercritical carbon dioxide not in spiral shell
Mixing in bar machine, but mix with supercritical carbon dioxide in combination cooling device in production equipment of the invention, so
Resin melt can be avoided to be detained in screw machine.Supercritical carbon dioxide is sprayed and resin melt by shower nozzle with certain pressure
Contact, can reach mixed uniformly purpose, while supercritical carbon dioxide also functions to cooling as cooling medium by heat exchange
Effect, may finally obtain preferable microporous foam effect.
The foaming plate produced using production equipment of the present invention with existing EPE compared with excellent mechanical property and forever
Long property antistatic property.
Brief description of the drawings
Fig. 1 is that three ranks extrude unit process chart；
Fig. 2 is the structural representation of twin-screw extruder barrel cooling device；
Fig. 3 is cooling supercritical carbon dioxide circulation schematic diagram in three ranks extrusion unit；
Fig. 4 is the front view of combination cooling device；
Fig. 5 is the shaft side figure of combination cooling device；
Fig. 6 is the profile of combination cooling device.
Specific embodiment
The structure of production equipment of the invention is specifically described below in conjunction with accompanying drawing, for those skilled in the art
For, under the premise without departing from the principles of the invention, some deformations and improvement can be also made, these also should be regarded as belonging to the present invention
Protection domain.
A kind of production equipment of cross-linked polyolefin microporous foam sheet material includes the activation kettle, agitating device, three that are sequentially connected
Rank extrusion unit, combination cooling device and shaped device.
Wherein, three ranks extrusion unit includes a parallel equidirectional two-screw extruder, an intermeshing counter rotating twin screw extrusion
Machine, jacket reactor and a single screw extrusion machine, jacket reactor is sequentially connected after two double screw extruders parallel connection
And single screw extrusion machine, the technological process of three ranks extrusion unit is as shown in figure 1, resin is mixed in two double screw extruders respectively
Resin melt is formed after refining melting, resin melt subsequently enters jacket reactor, adjustment pressure and temperature is stopped in reactor,
Enter back into single screw extrusion machine and further knead melting.
As shown in figure 4, combination cooling device includes a tubular shell 200 with entrance point 201 and the port of export 202,
A buffer module 203 is disposed radially at nearly case entrances end 201, the shell wall structure at the buffer module 203 and entrance point 201
Into a cavity, referred to as primary surge chamber 204 is disposed radially a buffer module 205 at nearly housing outlet end 202, this delays
Shell wall one cavity of composition at die block 205 and the port of export 202, referred to as secondary buffering room 206, at two inside housing 200
It is provided for conveying the steel pipe 207 and resin baffle plate 208 of supercritical carbon dioxide, the steel pipe between buffer module 203 and 205
207 respectively in two buffer modules 203, UNICOM at 205, wherein the end of two steel pipes is provided with carbon dioxide shower nozzle 209,
210, a supercritical carbon dioxide entrance 211 is set at the nearly port of export 202 in the outside of housing 200, the entrance 211 is super with conveying to be faced
The UNICOM of steel pipe 207 of boundary's carbon dioxide, sets super the facing of and the UNICOM of housing 200 at the nearly entrance point 201 in the outside of housing 200
Boundary's carbon dioxide outlet 212；The port of export of the shaped device close to combination cooling device.
In a preferred embodiment, two double screw extruders include cooling device for charging barrel, the material respectively
Using supercritical carbon dioxide as cooling medium, it includes the coolant jacket outside barrel 105 to cylinder cooling device as shown in Figure 3
107 and the cooling tube 103 that is connected with coolant jacket 107, coolant jacket 107 is provided with supercritical carbon dioxide import 106, cooling tube
103 one end are provided with supercritical carbon dioxide outlet 102, the control of check valve 101 are set between coolant jacket 107 and cooling tube 103 super
Critical carbon dioxide flows to cooling tube 103 from coolant jacket 107.104 is two screw rods in figure.It is overcritical in cooling device for charging barrel
The chuck import UNICOM of carbon dioxide outlet 102 and the jacket reactor, the supercritical carbon dioxide in cooling device for charging barrel
The JO UNICOM of import 106 and the jacket reactor.As shown in figure 3, cooling medium stream of supercritical carbon dioxide go out it is double
After screw machine extruder, flow into the chuck of jacket reactor, flow back to dual-screw-stem machine extruder again from after chuck outflow, thus
Constitute the circulation of supercritical carbon dioxide.
In a preferred embodiment, resin baffle plate is dimensioned so as to housing caliber in the combination cooling device
2/3 ~ 3/4, the length of steel pipe for conveying supercritical carbon dioxide stream is set as 6 ~ 8 times of steel pipe caliber.
In a preferred embodiment, the shaped device is flat mouth mould.
Production method of the invention is further described by the following examples.
Embodiment 1
By 50 kilograms of COPP, 30 kilograms of linear high-density polyethylene, line that melt index is 6.5 grams/10 minutes
Property 20 kilograms of low density polyethylene (LDPE), polyoxyethylene（20）2 kilograms of-mono succinate tristerin, active nano-ZnO 1.5
Kilogram it is placed in 200 liters of activation kettle, injection pressure is the supercritical carbon dioxide of 40MPa, adjustment carbon dioxide temperature is
45 DEG C, closing activation process 25 minutes, pressure release obtains activated resin.In activated resin, 2 kilograms of nanomete talc powder, horse are added
1 kilogram of maleic anhydride grafted polyolefin crosslinking agent, 2.5 kilograms, high-speed stirred 10-30 minutes of molecular distillation glycerin monostearate
Afterwards, 109 kilograms of resin mixture is obtained.Resin mixture is averagely added into a parallel equidirectional two-screw by hopper to extrude
Machine and with an intermeshing counter rotating twin screw extruder in each 54.5 kilograms, control double screw extruder in first paragraph to the 9th section
Temperature is respectively 80 DEG C, 90 DEG C, 130 DEG C, 150 DEG C, 160 DEG C, 155 DEG C, 140 DEG C, 125 DEG C, 100 DEG C, forms resin melt, tree
Fat melt extrudes into jacket reactor from two double screw extruders, controls the pressure of reactor for 35MPa, resin melt with
Enter the further mixed melting of single screw extrusion machine afterwards, the temperature for controlling first paragraph to the 9th section in single screw extrusion machine is：100
DEG C, 110 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 145 DEG C, 125 DEG C, 115 DEG C, 90 DEG C, resin melt from single screw extrusion machine extrude
Afterwards into the arrival end of combination cooling device, supercritical carbon dioxide is injected into combination cooling device, tree by carbon dioxide entrance
The temperature control of fat melt is at 100 DEG C, and supercritical carbon dioxide enters the temperature control of combination cooling device at 15 DEG C, overcritical
Carbon dioxide contacts mixing with resin melt in steel Bottomhole pressure and from the shower nozzle ejection of steel pipe, until pressure reaches at openend
During 25MPa, discharging opening resin mixture from flat mouth mould extrusion molding is opened, obtain the polyolefin panels that thickness is 100 millimeters and be total to
180 meters.
Embodiment 2
By 100 kilograms of the COPP that melt index is 6.5 grams/10 minutes, polyoxyethylene（20）- mono succinate is stearic
2.5 kilograms of acid glyceride, 1.0 kilograms of active nano-ZnO is placed in 200 liters of activation kettle, and injection pressure is 30MPa's
Supercritical carbon dioxide, the temperature for adjusting carbon dioxide is 45 DEG C, closing activation process 25 minutes, and pressure release obtains activated resin.
4 kilograms of nanomete talc powder is added in activated resin, 2 kilograms of maleic anhydride stem grafting polyolefin crosslinking agent, molecular distillation list is stearic
1.5 kilograms of acid glyceride, high-speed stirred obtains 111 kilograms of resin mixture after 35 minutes.Resin mixture is put down by hopper
It is added to each 55.5 kilograms in a parallel equidirectional two-screw extruder and an intermeshing counter rotating twin screw extruder, control is double
In screw extruder first paragraph to the 9th section of temperature be respectively 85 DEG C, 95 DEG C, 135 DEG C, 155 DEG C, 165 DEG C, 155 DEG C, 140
DEG C, 125 DEG C, 100 DEG C, form resin melt, resin melt extrudes into jacket reactor from two double screw extruders, controls
The pressure of reactor is 38MPa, and resin melt subsequently enters the further mixed melting of single screw extrusion machine, controls Single screw extrusion
First paragraph to the 9th section of temperature is in machine：110℃、120℃、130℃、140℃、150℃、145℃、125℃、115℃、95
DEG C, resin melt enters the arrival end of combination cooling device from after single screw extrusion machine extrusion, by supercritical carbon dioxide by two
Carbonoxide entrance injects combination cooling device, and the temperature control of resin melt is at 100 DEG C, and it is cold that supercritical carbon dioxide enters mixing
But at 35 DEG C, supercritical carbon dioxide sprays and resin melt the temperature control of device in steel Bottomhole pressure and from the shower nozzle of steel pipe
Contact, until when pressure reaches 28MPa at openend, opening discharging opening resin mixture from flat mouth mould extrusion molding, obtains thickness
Spend totally 192 meters of the polyolefin panels for 110 millimeters.
Product mechanical property is tested：
Test sample：The sheet material of 100mm, 10 × 10cm, white
Reference substance：100mm toray company produces EPE
Antistatic test：
Testing standard：《The solid insulating material specific insulations of GB 1410 and surface resistivity test method》,《SJ/T
10694 Electronic products manufacturing anti-static system method of testings》
Tester：This measuring technology Co., Ltd of HY-779 Tianjin Nico（Following test number refers both to sheet resistance, single
Position：Ohm）
Test sample treatment：12H, 20 DEG C, 50%RH
Test sample：The sheet material of 100mm, 10 × 10cm, white
Reference substance：100mm toray company produces EPE
First, water-fastness test
20 DEG C of distilled water, soak 1H.
2nd, heatproof test
80 DEG C, 20%RH, 3 days
3rd, normal temperature humidity measurement
20 DEG C, 20%RH, 60%RH, 80%RH, 100%RH, 24H
From above-mentioned detection data it can be found that there is excellent mechanical property and forever using the product that this patent equipment is produced
Long property antistatic property.
Claims (6)
1. a kind of production equipment of cross-linked polyolefin microporous foam sheet material, it is characterised in that：
The production equipment includes the activation kettle, agitating device, three ranks extrusion unit, combination cooling device and the shaping that are sequentially connected
Device；
The three ranks extrusion unit includes a parallel equidirectional two-screw extruder, intermeshing counter rotating twin screw extruder, a folder
Set reactor and a single screw extrusion machine, are sequentially connected jacket reactor and single spiral shell after two double screw extruders parallel connection
Bar extruder；
The combination cooling device includes a tubular shell (200) with entrance point (201) and the port of export (202), nearly shell
Body entrance point (201) place is disposed radially a buffer module (203), the shell at the buffer module (203) and entrance point (201) place
Wall constitutes primary surge chamber (204), and nearly housing outlet end (202) place is disposed radially a buffer module (205), the buffering mould
Block (205) constitutes secondary buffering room (206) with the shell wall at the port of export (202) place, and housing (200) is internal in two buffer modules
It is provided for conveying the steel pipe (207) and resin baffle plate (208) of supercritical carbon dioxide, the steel pipe (207) between (203,205)
Respectively in two UNICOMs of buffer module (203,205) place, wherein the end of two steel pipes be provided with carbon dioxide shower nozzle (209,
210), the nearly port of export (202) place in housing (200) outside sets a supercritical carbon dioxide entrance (211), the entrance (211)
With steel pipe (207) UNICOM of conveying supercritical carbon dioxide, nearly entrance point (201) place in housing (200) outside set one with
Housing（200）The supercritical carbon dioxide outlet of UNICOM（212）；
The port of export of the shaped device close to combination cooling device.
2. production equipment as claimed in claim 1, wherein, two double screw extruders in three ranks extrusion unit include respectively
Cooling device for charging barrel, using supercritical carbon dioxide as cooling medium, it includes barrel to the cooling device for charging barrel（105）Outward
The coolant jacket in portion（107）And and coolant jacket（107）Connected cooling tube（103）, coolant jacket（107）It is provided with overcritical dioxy
Change carbon import（106）, cooling tube（103）One end is provided with supercritical carbon dioxide outlet（102）, coolant jacket（107）With cooling tube
（103）Between check valve is set（101）Control supercritical carbon dioxide from coolant jacket（107）Flow to cooling tube（103）, barrel is cold
But the supercritical carbon dioxide outlet in device（102）With the chuck import UNICOM of the jacket reactor, cooling device for charging barrel
In supercritical carbon dioxide import（106）With the JO UNICOM of the jacket reactor.
3. production equipment as claimed in claim 1 or 2, wherein, the size of resin baffle plate is shell in the combination cooling device
The 2/3 ~ 3/4 of body caliber, the length of steel pipe for conveying supercritical carbon dioxide stream is 6 ~ 8 times of steel pipe caliber.
4. production equipment as claimed in claim 1 or 2, wherein, the shaped device is flat mouth mould.
5. three ranks in a kind of production equipment for described in claim 1 extrude unit, and it includes a parallel in the same direction pair of spiral shell
Bar extruder, intermeshing counter rotating twin screw extruder, jacket reactor and a single screw extrusion machine, two twin-screws
Jacket reactor and single screw extrusion machine are sequentially connected after extruder parallel connection.
6. three rank as claimed in claim 5 extrudes unit, wherein, two double screw extruders include that barrel cools down dress respectively
Put, using supercritical carbon dioxide as cooling medium, it includes barrel to the cooling device for charging barrel（105）Outside coolant jacket
（107）And and coolant jacket（107）Connected cooling tube（103）, coolant jacket（107）It is provided with supercritical carbon dioxide import
（106）, cooling tube（103）One end is provided with supercritical carbon dioxide outlet（102）, coolant jacket（107）With cooling tube（103）Between
Check valve is set（101）Control supercritical carbon dioxide from coolant jacket（107）Flow to cooling tube（103）, in cooling device for charging barrel
Supercritical carbon dioxide outlet（102）With the chuck import UNICOM of the jacket reactor, super in cooling device for charging barrel face
Boundary's carbon dioxide inlet（106）With the JO UNICOM of the jacket reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768151.6A CN105328915B (en) | 2015-11-11 | 2015-11-11 | A kind of production equipment of cross-linked polyolefin microporous foam sheet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768151.6A CN105328915B (en) | 2015-11-11 | 2015-11-11 | A kind of production equipment of cross-linked polyolefin microporous foam sheet material |
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| Publication Number | Publication Date |
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| CN105328915A CN105328915A (en) | 2016-02-17 |
| CN105328915B true CN105328915B (en) | 2017-05-31 |
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| CN201510768151.6A Active CN105328915B (en) | 2015-11-11 | 2015-11-11 | A kind of production equipment of cross-linked polyolefin microporous foam sheet material |
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| CN107584783A (en) * | 2017-10-18 | 2018-01-16 | 阮伟炽 | A kind of production equipment and its production method of physical blowing extruded product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5605937A (en) * | 1994-09-30 | 1997-02-25 | Knaus; Dennis A. | Moldable thermoplastic polymer foam beads |
| JPH08309819A (en) * | 1995-05-15 | 1996-11-26 | Toray Ind Inc | Method and apparatus for supplying raw material to extruder |
| CN201198187Y (en) * | 2007-09-18 | 2009-02-25 | 大连市水利科学研究所 | Cellular plastic extruding system |
| EP2641717A1 (en) * | 2012-03-20 | 2013-09-25 | Sika Technology AG | Foamable composition with reduced thermal conductivity for use in plastic profiles |
| CN103273659B (en) * | 2013-06-23 | 2016-02-03 | 宁夏鼎盛阳光保温材料有限公司 | Blown with carbon dioxide plastic extrusion plate equipment |
| CN103963306A (en) * | 2013-08-06 | 2014-08-06 | 汕头市贝斯特科技有限公司 | Production system for supercritical gas PP physical foaming sheet |
| CN203637196U (en) * | 2013-12-26 | 2014-06-11 | 江苏奔迪新材料科技有限公司 | Equipment for producing polyolefin foamed plastic product |
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