CN105328915A - Production equipment of cross-linked polyolefin microcellular foaming plate - Google Patents
Production equipment of cross-linked polyolefin microcellular foaming plate Download PDFInfo
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- CN105328915A CN105328915A CN201510768151.6A CN201510768151A CN105328915A CN 105328915 A CN105328915 A CN 105328915A CN 201510768151 A CN201510768151 A CN 201510768151A CN 105328915 A CN105328915 A CN 105328915A
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- carbon dioxide
- supercritical carbon
- cooling device
- screw extruder
- jacket
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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 invention relates to production equipment of a cross-linked polyolefin microcellular foaming plate. The production equipment comprises an activating kettle, a stirring device, a three-step extruding unit, a mixed cooling device and a molding device connected in sequence, wherein the three-step extruding unit comprises a parallel co-rotating twin-screw extruder, an engagement incongruous twin-screw extruder, a jacket reaction kettle and a single-screw extruder; the two twin-screw extruders are connected with the jacket reaction kettle and the single-screw extruder in sequence after parallel connection; and a supercritical carbon dioxide nozzle is arranged in the mixed cooling device. The three-step extruding unit can control the pressure of a resin melt entering the single-screw extruder after being extruded by the twin-screw extruders to guarantee the production safety; and the supercritical carbon dioxide and the resin melt are fully mixed in the mixed cooling device to realize an ideal microcellular foaming effect.
Description
Technical field
The present invention relates to polyalkene foaming field, particularly relate to a kind of production equipment of cross-linked polyolefin microporous foam sheet material.
Background technology
In resin foamed material commercial applications a lot of year that thermoplastic polymer is produced, traditional foaming technique usually hinders its further developing in existing field.The microporous foam technology grown up in recent years is expected to solve some shortcomings of traditional foaming technique existence and deficiency.Microcellular foam material refers to that cell diameter is at 1-10 μm, the foamed material of cell density between 109-1012/cm3.At present, supercritical carbon dioxide uses physical blowing agent the most general in micro-foaming material preparation.Continuity degree difference according to operation mainly contains the methods such as batch-foamed, semicontinuous foaming, continuous extrusion foaming.Batch process and semi-continuous process length consuming time, cannot meet industrial demand, be mainly used in theoretical research.And the appearance of the continuous extrusion foaming method consistent with actual plastic processing makes the practical application of microcellular foam material become possibility.
Use screw extruder can realize continous way and extrude microporous foam, general process is: resin first plasticizing fusion in screw rod, then by supercritical carbon dioxide resin by injection melt, resin melt and carbon dioxide mix material is obtained by the shear-mixed effect of screw rod, compound inlet port mould, quick pressure releasing and nucleation foaming, then rapid cooling curing.Chinese patent CN103963306 describes a kind of production equipment of overcritical PP physical blowing sheet material, and double screw extruder, single screw extrusion machine series connection use by this system, and supercritical carbon dioxide is exported by gas injection equipment and enters in extruder.The tandem energy of two screw machines makes the abundant mixed melting of resin melt, and accelerate carbon dioxide solubility and enter in resin melt, but the output pressure of double screw extruder is 35-45MPA, the pressure that single screw extrusion machine can bear is 20-30MPA, time material enters single screw extrusion machine from double screw extruder output, due to the existence of pressure differential, material can be there is and spray the danger of even exploding.In addition, supercritical carbon dioxide mixes with resin melt in an extruder, and material viscosity can be caused to raise, and is detained in an extruder, affects final fretting map effect.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, the invention provides a kind of production equipment of cross-linked polyolefin microporous foam sheet material, it can realize the Stress control that screw extruder series connection uses, and resin melt can not be detained in an extruder, finally reaches desirable microporous foam effect.
The technical solution used in the present invention is as follows: a kind of production equipment of cross-linked polyolefin microporous foam sheet material comprises the activation kettle, agitating device, three rank that connect successively and extrudes unit, combination cooling device and shaped device, described three rank are extruded unit and are comprised a parallel equidirectional two-screw extruder, intermeshing counter rotating twin screw extruder, jacket reactor and a single screw extrusion machine, connect jacket reactor and single screw extrusion machine successively after described two double screw extruder parallel connections, described combination cooling device comprises the tubular shell that has entrance point and the port of export, nearly case entrances end place is disposed radially a buffer module, the shell wall at this buffer module and entrance point place forms a cavity, be called elementary surge chamber, nearly housing outlet end place is disposed radially a buffer module, the shell wall at this buffer module and port of export place forms secondary buffering room, enclosure interior arranges steel pipe and resin baffle plate for carrying supercritical carbon dioxide between two buffer modules, described steel pipe is respectively two UNICOMs of buffer module place, wherein the end of two steel pipes is provided with carbon dioxide shower nozzle, the nearly port of export place of hull outside arranges a supercritical carbon dioxide entrance, this entrance and the steel pipe UNICOM carrying supercritical carbon dioxide, arrange one at the nearly entrance point place of hull outside to export with the supercritical carbon dioxide of housing UNICOM, the port of export of described shaped device next-door neighbour combination cooling device.
In a preferred embodiment, described two double screw extruders comprise cooling device for charging barrel respectively, described cooling device for charging barrel adopts supercritical carbon dioxide as cooling medium, it coolant jacket comprising barrel outside and the cooling tube be connected with coolant jacket, coolant jacket is provided with supercritical carbon dioxide import, cooling tube one end is provided with supercritical carbon dioxide outlet, check valve control supercritical carbon dioxide is set between coolant jacket and cooling tube and flows to cooling tube from coolant jacket, supercritical carbon dioxide outlet in cooling device for charging barrel and the chuck import UNICOM of described jacket reactor, supercritical carbon dioxide import in cooling device for charging barrel and the JO UNICOM of described reactor.
In a preferred embodiment, in described combination cooling device, the size of resin baffle plate is set as 2/3 ~ 3/4 of housing caliber, and the steel pipe length setting of conveying supercritical carbon dioxide stream is 6 ~ 8 times of steel pipe caliber.
In a preferred embodiment, described shaped device is flat mouth mould.
Present invention also offers a kind of production method adopting the cross-linked polyolefin microporous foam sheet material of above-mentioned production equipment.
A production method for cross-linked polyolefin microporous foam sheet material, comprises the following steps:
(1) by weight, by 100 parts of basic resin, 1-10 part embedding medium, 0.1-10 part conductivity accelerator is placed in activation kettle, injection pressure is the supercritical carbon dioxide of 30-40MPa, adjustment carbon dioxide temperature is 20-100 DEG C, close activation process 10-30 minute, pressure release obtains activated resin, wherein basic resin is selected from COPP, linear high-density polyethylene, LLDPE or their mixture, embedding medium is selected from polyoxyethylene (20)-mono succinate tristerin, polyoxyethylene (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, the activated resin obtained in 100 parts of steps (1), 1-10 part nucleator, 1-20 part maleic anhydride stem grafting polyolefin crosslinking agent are mixed with 1-10 part blowing promotor and obtains resin mixture in high-speed stirred 10-30 minute, described nucleator is selected from nano barium sulfate, nanomete talc powder, and described blowing promotor is selected from molecular clock glycerin monostearate, molecular clock glyceryl monooleate or molecular clock monopalmitin.
(3) resin mixture of step (2) gained is on average joined in a parallel equidirectional two-screw extruder and an intermeshing counter rotating twin screw extruder by hopper, be warming up to 135-150 DEG C of melting and form resin melt, resin melt is extruded from described two double screw extruders and is entered jacket reactor, control the pressure of jacket reactor at 35-45MPa, resin melt enters the further mixed melting of single screw extrusion machine subsequently.
(4) resin melt enters combination cooling device after single screw extrusion machine is extruded, and supercritical carbon dioxide is injected combination cooling device, and supercritical carbon dioxide to contact with resin melt from the ejection of the shower nozzle of steel pipe and mixes.
(5) when combination cooling device open end pressure reaches 20-30MPa, discharging opening compound is opened from shaped device extrusion molding.
In a preferred embodiment, the basic resin body in step 1 is COPP, and its melt index is 6.5 grams/10 minutes.
In a preferred embodiment, the basic resin body in step 1 is the mixture of COPP, linear high-density polyethylene and LLDPE, and wherein the melt index of COPP is 6.5 grams/10 minutes.
In a preferred embodiment, in step 5 compound from the extrusion molding of flat mouth mould.
In production method of the present invention, the crosslinked of vistanex occurs in step (3).In double screw extruder, chemical cross-linking agent decomposes at 135-150 DEG C, and resin carries out chemical crosslinking in mixing process, then enters into jacket reactor, under pressure and hot balance, carry out physical crosslinking.
Beneficial effect of the present invention:
Arranging of jacket reactor in group is extruded on three rank of production equipment of the present invention can control resin melt from pressure when entering single screw extrusion machine after double screw extruder is extruded, and ensures safety in production; The physics and chemistry cross-linking process that can successively complete in unit extruded by resin on three rank, solve the problem being adhered to carrier band with the material that chemical cross-linking agent is cross-linked, also can make up the deficiency of heat radiation cross-linking method thus obtain the vistanex of high strength, being conducive to final fretting map effect.
The cooling device for charging barrel that the double screw extruder in group is extruded on three rank uses supercritical carbon dioxide as cooling medium, itself and jacket reactor coupling achieve recycling of cooling medium supercritical carbon dioxide, not only avoid the defect of traditional water-cooling pattern, also save cooling medium, reduce production cost.
When using this production equipment to produce cross-linked polyolefin microporous foam sheet material, resin does not mix with supercritical carbon dioxide in screw machine, but mix with supercritical carbon dioxide in combination cooling device in production equipment of the present invention, resin melt can be avoided like this to be detained in screw machine.Supercritical carbon dioxide is contacted with resin melt with certain pressure ejection by shower nozzle, can reach mixed uniformly object, and supercritical carbon dioxide also plays cooling effect as cooling medium by heat exchange simultaneously, finally can obtain desirable microporous foam effect.
The foaming plate utilizing production equipment of the present invention to produce has excellent mechanical property and permanence antistatic performance compared with existing EPE.
Accompanying drawing explanation
Fig. 1 is that unit process chart is extruded on three rank
Fig. 2 is the structural representation of twin-screw extruder barrel cooling device
Fig. 3 is that three rank are extruded cooling supercritical carbon dioxide in unit and to be circulated schematic diagram
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
Detailed description of the invention
Be specifically described below in conjunction with the structure of accompanying drawing to production equipment of the present invention, for a person skilled in the art, under the premise without departing from the principles of the invention, also can make some distortion and improvement, these also should be considered as belonging to protection scope of the present invention.
A kind of production equipment of cross-linked polyolefin microporous foam sheet material comprises the activation kettle, agitating device, three rank that connect successively and extrudes unit, combination cooling device and shaped device.
Wherein, three rank are extruded unit and are comprised a 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 is connected successively after described two double screw extruder parallel connections, the technological process of unit is extruded as shown in Figure 1 in three rank, resin forms resin melt after mixing melting respectively in two double screw extruders, resin melt enters jacket reactor subsequently, in reactor, stop adjustment pressure and temperature, then enter the further mixing melting of single screw extrusion machine.
As shown in Figure 4, combination cooling device comprises the tubular shell 200 that has entrance point 201 and the port of export 202, nearly case entrances end 201 place is disposed radially a buffer module 203, this buffer module 203 forms a cavity with the shell wall at entrance point 201 place, be called elementary surge chamber 204, nearly housing outlet end 202 place is disposed radially a buffer module 205, this buffer module 205 forms a cavity with the shell wall at the port of export 202 place, be called secondary buffering room 206, housing 200 inside arranges steel pipe 207 and resin baffle plate 208 for carrying supercritical carbon dioxide between two buffer modules 203 and 205, described steel pipe 207 is respectively two buffer modules 203, 205 UNICOMs of place, wherein the end of two steel pipes is provided with carbon dioxide shower nozzle 209, 210, outside housing 200, the nearly port of export 202 place arranges a supercritical carbon dioxide entrance 211, this entrance 211 and steel pipe 207 UNICOM carrying supercritical carbon dioxide, outside housing 200, nearly entrance point 201 place arranges one and exports 212 with the supercritical carbon dioxide of housing 200 UNICOM, the port of export of described shaped device next-door neighbour combination cooling device.
In a preferred embodiment, described two double screw extruders comprise cooling device for charging barrel respectively, described cooling device for charging barrel adopts supercritical carbon dioxide as cooling medium, it coolant jacket 107 comprising barrel 105 outside and the cooling tube 103 be connected with coolant jacket 107 as shown in Figure 3, coolant jacket 107 is provided with supercritical carbon dioxide import 106, cooling tube 103 one end is provided with supercritical carbon dioxide outlet 102, arranges check valve 101 and control supercritical carbon dioxide and flow to cooling tube 103 from coolant jacket 107 between coolant jacket 107 and cooling tube 103.In figure, 104 is two screw rods.Supercritical carbon dioxide outlet 102 in cooling device for charging barrel and the chuck import UNICOM of described jacket reactor, the supercritical carbon dioxide import 106 in cooling device for charging barrel and the JO UNICOM of described jacket reactor.As shown in Figure 3, after cooling medium stream of supercritical carbon dioxide goes out dual-screw-stem machine extruder, flow in the chuck of jacket reactor, after chuck flows out, flow back to again dual-screw-stem machine extruder, constitute the circulation of supercritical carbon dioxide.
In a preferred embodiment, in described combination cooling device, the size of resin baffle plate is set as 2/3 ~ 3/4 of housing caliber, and the steel pipe length setting of conveying supercritical carbon dioxide stream is 6 ~ 8 times of steel pipe caliber.
In a preferred embodiment, described shaped device is flat mouth mould.
By the following examples production method of the present invention is further described.
embodiment 1
Be the COPP 50 kilograms of 6.5 grams/10 minutes, linear high-density polyethylene 30 kilograms, LLDPE 20 kilograms by melt index, polyoxyethylene (20)-mono succinate tristerin 2 kilograms, active nano-ZnO 1.5 kilograms is placed in the activation kettle of 200 liters, injection pressure is the supercritical carbon dioxide of 40MPa, adjustment carbon dioxide temperature is 45 DEG C, close activation process 25 minutes, pressure release obtains activated resin.In activated resin, add nanomete talc powder 2 kilograms, maleic anhydride stem grafting polyolefin crosslinking agent 1 kilogram, molecular clock glycerin monostearate 2.5 kilograms, after high-speed stirred 10-30 minute, obtain resin mixture 109 kilograms.By resin mixture by hopper on average join a parallel equidirectional two-screw extruder and and an intermeshing counter rotating twin screw extruder in each 54.5 kilograms, control first paragraph in double screw extruder and be respectively 80 DEG C to the temperature of the 9th section, 90 DEG C, 130 DEG C, 150 DEG C, 160 DEG C, 155 DEG C, 140 DEG C, 125 DEG C, 100 DEG C, form resin melt, resin melt is extruded from two double screw extruders and is entered jacketed reaction and delay, and the pressure controlling reactor is 35MPa, resin melt enters the further mixed melting of single screw extrusion machine subsequently, controls first paragraph in single screw extrusion machine to the temperature of the 9th section to be: 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 is from the arrival end entering combination cooling device after single screw extrusion machine is extruded, supercritical carbon dioxide is injected combination cooling device by carbon dioxide entrance, the temperature of resin melt controls at 100 DEG C, the temperature that supercritical carbon dioxide enters combination cooling device controls at 15 DEG C, supercritical carbon dioxide to contact with resin melt at steel Bottomhole pressure and from the ejection of the shower nozzle of steel pipe and mixes, until when open end pressure reaches 25MPa, open discharging opening resin mixture from the extrusion molding of flat mouth mould, obtain the polyolefin panels totally 180 meters that thickness is 100 millimeters.
embodiment 2
It is the COPP 100 kilograms of 6.5 grams/10 minutes by melt index, polyoxyethylene (20)-mono succinate tristerin 2.5 kilograms, active nano-ZnO 1.0 kilograms is placed in the activation kettle of 200 liters, injection pressure is the supercritical carbon dioxide of 30MPa, the temperature of adjustment carbon dioxide is 45 DEG C, close activation process 25 minutes, pressure release obtains activated resin.In activated resin, add nanomete talc powder 4 kilograms, maleic anhydride stem grafting polyolefin crosslinking agent 2 kilograms, molecular clock glycerin monostearate 1.5 kilograms, high-speed stirred, after 35 minutes, obtains resin mixture 111 kilograms.Resin mixture on average to be joined in a parallel equidirectional two-screw extruder and an intermeshing counter rotating twin screw extruder each 55.5 kilograms by hopper, controls first paragraph in double screw extruder and be respectively 85 DEG C to the temperature of the 9th section, 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 is extruded from two double screw extruders and is entered jacket reactor, and the pressure controlling reactor is 38MPa, resin melt enters the further mixed melting of single screw extrusion machine subsequently, controls first paragraph in single screw extrusion machine to the temperature of the 9th section to be: 110 DEG C, 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 145 DEG C, 125 DEG C, 115 DEG C, 95 DEG C, resin melt is from the arrival end entering combination cooling device after single screw extrusion machine is extruded, supercritical carbon dioxide is injected combination cooling device by carbon dioxide entrance, the temperature of resin melt controls at 100 DEG C, the temperature that supercritical carbon dioxide enters combination cooling device controls at 35 DEG C, supercritical carbon dioxide contacts at steel Bottomhole pressure and from the shower nozzle ejection of steel pipe with resin melt, until when open end pressure reaches 28MPa, open discharging opening resin mixture from the extrusion molding of flat mouth mould, obtain the polyolefin panels totally 192 meters that thickness is 110 millimeters.
Product Mechanics Performance Testing:
The sheet material of test sample: 100mm, 10 × 10cm, white
Reference substance: 100mm toray company produces EPE
Antistatic test:
Testing standard: " GB1410 solid insulating material specific insulation and surface resistivity test method ", " SJ/T10694 Electronic products manufacturing anti-static system method of testing "
Tester: this measuring technology Co., Ltd of HY-779 Tianjin Nico (following test number all refers to sheet resistance, unit: ohm)
Test sample treatment: 12H, 20 DEG C, 50%RH
The sheet material of test sample: 100mm, 10 × 10cm, white
Reference substance: 100mm toray company produces EPE
One, water-fastness test
20 DEG C of distilled water, soak 1H.
Two, heatproof test
80 DEG C, 20%RH, 3 days
Three, normal temperature humidity measurement
20℃，20%RH，60%RH，80%RH，100%RH，24H
Can find from above-mentioned detection data, utilize the product of this patent device fabrication to have excellent mechanical property and permanence antistatic performance.
Claims (6)
1. a production equipment for cross-linked polyolefin microporous foam sheet material, is characterized in that:
Described production equipment comprises the activation kettle, agitating device, three rank that connect successively and extrudes unit, combination cooling device and shaped device;
Described three rank are extruded unit and are comprised a parallel equidirectional two-screw extruder, intermeshing counter rotating twin screw extruder, jacket reactor and a single screw extrusion machine, connect jacket reactor and single screw extrusion machine successively after described two double screw extruder parallel connections;
Described combination cooling device comprises the tubular shell (200) that has entrance point (201) and the port of export (202), nearly case entrances end (201) place is disposed radially a buffer module (203), this buffer module (203) forms elementary surge chamber (204) with the shell wall at entrance point (201) place, nearly housing outlet end (202) place is disposed radially a buffer module (205), this buffer module (205) forms secondary buffering room (206) with the shell wall at the port of export (202) place, housing (200) is inner two buffer modules (203, 205) steel pipe (207) for carrying supercritical carbon dioxide and resin baffle plate (208) are set between, described steel pipe (207) is respectively two buffer modules (203, 205) UNICOM of place, wherein the end of two steel pipes is provided with carbon dioxide shower nozzle (209, 210), the nearly port of export (202) place, housing (200) outside arranges a supercritical carbon dioxide entrance (211), this entrance (211) and steel pipe (207) UNICOM carrying supercritical carbon dioxide, arrange one at nearly entrance point (201) place, housing (200) outside to export (212) with the supercritical carbon dioxide of housing (200) UNICOM,
The port of export of described shaped device next-door neighbour combination cooling device.
2. production equipment as claimed in claim 1, wherein, two double screw extruders that three rank are extruded in unit comprise cooling device for charging barrel respectively, described cooling device for charging barrel adopts supercritical carbon dioxide as cooling medium, it cooling tube (103) comprising the outside coolant jacket (107) of barrel (105) and be connected with coolant jacket (107), coolant jacket (107) is provided with supercritical carbon dioxide import (106), cooling tube (103) one end is provided with supercritical carbon dioxide outlet (102), arrange check valve (101) between coolant jacket (107) and cooling tube (103) to control supercritical carbon dioxide and flow to cooling tube (103) from coolant jacket (107), supercritical carbon dioxide outlet (102) in cooling device for charging barrel and the chuck import UNICOM of described jacket reactor, the JO UNICOM of the supercritical carbon dioxide import (106) in cooling device for charging barrel and described jacket reactor.
3. production equipment as claimed in claim 1 or 2, wherein, in described combination cooling device, resin baffle plate is of a size of 2/3 ~ 3/4 of housing caliber, and the steel pipe length of conveying supercritical carbon dioxide stream is 6 ~ 8 times of steel pipe caliber.
4. production equipment as claimed in claim 1 or 2, wherein, described shaped device is flat mouth mould.
5. extrude unit for three rank in production equipment according to claim 1 for one kind, it comprises a parallel equidirectional two-screw extruder, intermeshing counter rotating twin screw extruder, jacket reactor and a single screw extrusion machine, connects jacket reactor and single screw extrusion machine successively after described two double screw extruder parallel connections.
6. unit is extruded on three rank as claimed in claim 5, wherein, two double screw extruders comprise cooling device for charging barrel respectively, described cooling device for charging barrel adopts supercritical carbon dioxide as cooling medium, it cooling tube (103) comprising the outside coolant jacket (107) of barrel (105) and be connected with coolant jacket (107), coolant jacket (107) is provided with supercritical carbon dioxide import (106), cooling tube (103) one end is provided with supercritical carbon dioxide outlet (102), arrange check valve (101) between coolant jacket (107) and cooling tube (103) to control supercritical carbon dioxide and flow to cooling tube (103) from coolant jacket (107), supercritical carbon dioxide outlet (102) in cooling device for charging barrel and the chuck import UNICOM of described jacket reactor, the JO UNICOM of the supercritical carbon dioxide import (106) in cooling device for charging barrel and described jacket reactor.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN105328915A true CN105328915A (en) | 2016-02-17 |
| CN105328915B CN105328915B (en) | 2017-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| EP0783543B1 (en) * | 1994-09-30 | 2005-11-30 | Dennis A. Knaus | 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 |
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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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| CN105328915B (en) | 2017-05-31 |
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