CN104275766B - Device for trapping and recycling supercritical fluid during mould pressing foaming process - Google Patents
Device for trapping and recycling supercritical fluid during mould pressing foaming process Download PDFInfo
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- CN104275766B CN104275766B CN201310292613.2A CN201310292613A CN104275766B CN 104275766 B CN104275766 B CN 104275766B CN 201310292613 A CN201310292613 A CN 201310292613A CN 104275766 B CN104275766 B CN 104275766B
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- supercritical fluid
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- reaction cabin
- recycling device
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Abstract
The invention discloses a device for trapping and recycling supercritical fluid during a mould pressing foaming process. The device is characterized by comprising an upper mould and a lower mould, wherein the upper mould is provided with venting devices, the lower mould comprises a reaction cabin and a collection cabin, a separation layer and a separation valve are arranged between the reaction cabin and the collection cabin, and a sealing component is arranged between the upper mould and the lower mould. Compared with the prior art, the device has the beneficial effects that when a supercritical fluid is used for preparing a polymer foaming material, gases can be effectively trapped by the device so as to control emission at a minimum, so that the gas emission is lowered greatly during the foaming process, environment protection and cleaning effects are achieved, costs are lowered, and the technical defects in the prior art are effectively overcome.
Description
Technical field
The present invention relates to a kind of moulded from foam device and in particular to during a kind of moulded from foam the trapping of supercritical fluid and
Recycling device.
Background technology
Microcellular foam material has excellent heat resistance, wholesomeness, thermal insulation and good environmental effect etc. and gradually obtains extensively
General application, especially its excellent antidetonation energy absorption performance are widely used in damping, buffering, noise reduction sound absorption, product packaging, automobile
The fields such as interior jewelry, building heat preservation.With the continuous progress of process technology and product research method, its application space will
More extensive, form huge market scale.
Number of patent application is 200810133787.3 Chinese invention patent application《PP foam material and its producer
Method》（Publication No. CN101538387A）Disclose a kind of PP foam material and its production method, this patent is adopted
With supercritical fluid extrusion foaming technique, in production process, fluid foaming agent is all injected in double screw extruder and is mixed
Refining extrusion pelletizing, high to extruder technological requirement, wayward, and make the foaming agent in finished product bead content uneven,
Cause product unstable.United States Patent (USP) US7318713 discloses one kind using overcritical injection molding technology preparation polymerization
The method of thing microcellular foam material, supercritical fluid is imported the barrel of injection machine by the method, forms polymer in barrel
The homogeneous phase solution of/supercritical fluid, homogeneous phase solution is being injected into the immediate effervescence of mould.The method is due to bubble nucleating speed
Rate is relatively low, and the hole density obtaining is less, can only realize the less loss of weight of foaming product.Number of patent application 201110054581.3
Chinese invention patent application《The method of preparing polymer microporous foaming material by supercritical mould foaming》（Application publication number
For CN102167840A）Provide a kind of method of preparing polymer microporous foaming material by supercritical mould foaming, including
Following steps, the foaming mould on moulding press are heated up, after blowing temperature to be achieved, polymer are put into mould, molding
Machine matched moulds, mould seals, and is filled with supercritical fluid into mould, and supercritical fluid is to the swelling diffusion of polymer, Ran Houmo
Press die sinking pressure release foaming, you can obtain polymer micro expanded material.
It is known that the whole world is faced with the series of challenges that climate warming brings, with CO2Based on room temperature air discharge,
It is the key factor leading to greenhouse effects, therefore stop or reduce the discharge of greenhouse gases in process of production, and had
Effect recycling has great importance.From the point of view of the current patent announced, prepare polymer using supercritical fluid foaming
Foamed plastics, the overwhelming majority adopts supercritical CO2Or N2For foaming agent, directly unload during foaming and be pressed onto in the air, its work
For foaming agent itself green pollution-free, but it is discharged in air and can cause greenhouse effects.
Content of the invention
The technical problem to be solved be in addition provide for the above-mentioned state of the art a kind of reduce gas discharge,
The trapping of supercritical fluid and recycling device during environment-protecting clean cost-effective moulded from foam.
The present invention solves the technical scheme that adopted of above-mentioned technical problem：Supercritical fluid during a kind of moulded from foam
Trapping and recycling device it is characterised in that：Including upper die and lower die, described upper mould is provided with air-breather, described
Lower mould includes reaction cabin and collecting chamber, is provided with separation layer and separation valve door between described reaction cabin and collecting chamber, described upper mould with
Lower intermode is provided with seal member.
As improvement, in described reaction cabin, it is provided with least one of which separation net.
As improvement, described isolation net surface is provided with the through hole of uniform arrangement, and described isolation net surface is provided with support separation net
Fulcrum.
Preferably, described air-breather includes the air inlet pipe being connected with upper mould surface, and described air inlet pipe is provided with pressure-relief valve.
Preferably described seal member is rubber seal.
Compared with prior art, it is an advantage of the current invention that：When preparing polymeric foamable material using supercritical fluid, lead to
Cross this device can effective captured gas, by emission control to minimum, therefore in foaming process, greatly reduce gas
Discharge, not only environment-protecting clean but also cost-effective, effectively overcome the technological deficiency of prior art presence.
Brief description
Fig. 1 is present configuration schematic diagram.
Fig. 2 is the enlarged drawing of part I in Fig. 1.
Fig. 3 is the structural representation of separation net in Fig. 1.
Specific embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Fig. 1 to Fig. 3 is used for the trapping of supercritical fluid and recycling device during moulded from foam, bag for the present embodiment
Include mould 3 and lower mould 4, sealed using seal member between the two, specially rubber seal 10, upper mould 3 He
Lower mould 4 is that stainless steel is high pressure resistant to be made.The upper surface of upper mould 3 is provided with air-breather, specially with upper mould 3 upper surface
The air inlet pipe 2 being connected, air inlet pipe 2 is provided with pressure-relief valve 1, to control flow and pressure；Lower mould 4 is divided into reaction cabin 5
And collecting chamber 6 two parts, and reaction cabin 5 isolated by separation layer 7 between the two with collecting chamber 6, and two
It is provided with separation valve door 9 between person.Reaction cabin 5 can be alternatively multilayer setting, in the present embodiment, reaction cabin for individual layer
5 is multilayer setting, carries out interlayer setting especially by separation net 8, the surface of separation net 8 is provided with multiple uniform arrangements
Through hole 81 and three fulcrums 82, fulcrum 82 is evenly distributed on the edge of separation net 8, and the length of fulcrum 82 is permissible
Freely stretch and adjust.Fulcrum 82 can support separation net 8 so that maintaining a certain distance between multilayer separation net 8,
Enough spaces are left with the foaming to polymeric material.
During this embodiment specifically used, polymer is put in the reaction cabin 5 in mould, moulding press promote upper mould 3 with
Mould 4 matched moulds, mould seals, and injects a certain amount of supercritical gas into reaction cabin 5, closes pressure-relief valve 1 and isolating valve
9.Intensification mould, to certain temperature, after polymer is swelling to saturation in reaction cabin 5, injects empty in reaction cabin 5
Gas, opens isolating valve 9 simultaneously, is replaced the supercritical fluid compression in reaction cabin 5 to collecting chamber 6 by air.
Hereafter close isolating valve 9, quickly mold release, finally give expanded material.Upper once foam when, moulding press matched moulds,
After mould sealing, open isolating valve 9, the gas in collecting chamber 6 is poured reaction cabin 5, next time can be directly recycled for
Foaming, to reach effectively utilizes and the combustion with minimal of gas.
Be applied to the present embodiment device polymer be selected from one of amorphous or Crystalline plastics or more than one
Blend, including polystyrene, Merlon, acrylonitrile-butadiene-styrene copolymer, polyimides, polyamide,
Polyphenylene sulfide, polyether sulfone, polyvinyl chloride, natural rubber, silicon rubber, nitrile rubber, polypropylene, polyethylene, poly- breast
Acid and polyethylene terephthalate etc.；And the supercritical gas injecting are CO2、N2Or both are with arbitrary proportion
Blending gas.
During the present embodiment moulded from foam, the upper mould of the trapping of supercritical fluid and recycling device and lower intermode adopt
Seal member is sealed so that reaction cabin and collecting chamber are in carrying out gas exchange process, and the pressure in cabin keeps constant,
So that when preparing polymeric foamable material using supercritical fluid, by this device can effective captured gas, by emission control
To minimum, therefore in foaming process, greatly reduce the discharge of gas, not only environment-protecting clean but also cost-effective.
Claims (5)
1. during a kind of moulded from foam the trapping of supercritical fluid and recycling device it is characterised in that：Including on
Mould (3) and lower mould (4), described upper mould (3) is provided with air-breather, and described lower mould (4) includes reaction cabin (5) and collecting chamber (6),
It is provided with separation layer (7) and separation valve door (9) between described reaction cabin (5) and collecting chamber (6), be provided between described upper mould (3) and lower mould (4)
Seal member.
2. the trapping of supercritical fluid and recycling device during moulded from foam according to claim 1, its
It is characterised by：It is provided with least one of which separation net (8) in described reaction cabin (5).
3. the trapping of supercritical fluid and recycling device during moulded from foam according to claim 2, its
It is characterised by：Described separation net (8) surface is provided with the through hole (81) of uniform arrangement, described separation net (8) surface be provided with support every
The fulcrum (82) of off-network (8).
4. the trapping of supercritical fluid and recycling device during moulded from foam according to claim 1 and 2,
It is characterized in that：Described air-breather includes the air inlet pipe (2) being connected with upper mould (3) surface, and described air inlet pipe (2) sets
There is pressure-relief valve (1).
5. the trapping of supercritical fluid and recycling device during moulded from foam according to claim 1 and 2,
It is characterized in that：Described seal member is rubber seal (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310292613.2A CN104275766B (en) | 2013-07-11 | 2013-07-11 | Device for trapping and recycling supercritical fluid during mould pressing foaming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310292613.2A CN104275766B (en) | 2013-07-11 | 2013-07-11 | Device for trapping and recycling supercritical fluid during mould pressing foaming process |
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| Publication Number | Publication Date |
|---|---|
| CN104275766A CN104275766A (en) | 2015-01-14 |
| CN104275766B true CN104275766B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310292613.2A Active CN104275766B (en) | 2013-07-11 | 2013-07-11 | Device for trapping and recycling supercritical fluid during mould pressing foaming process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3925751A1 (en) * | 2020-06-18 | 2021-12-22 | Basf Se | Process for continuously producing expanded foam particles |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0972626A2 (en) * | 1998-07-16 | 2000-01-19 | Mitsui Chemicals, Inc. | Method of adding supercritical carbon dioxide to thermoplastic resin and foamed articles |
| US7318713B2 (en) * | 2002-07-18 | 2008-01-15 | Trexel, Inc. | Polymer processing systems including screws |
| CN201338361Y (en) * | 2009-01-20 | 2009-11-04 | 北京中拓机械有限责任公司 | Supercritical fluid foaming agent conveying device |
| CN102167840A (en) * | 2011-04-12 | 2011-08-31 | 姜修磊 | Method for preparing polymer microporous foaming material by supercritical mould foaming |
| CN202895561U (en) * | 2012-11-29 | 2013-04-24 | 北京物资学院 | Gas adding device |
| CN203472039U (en) * | 2013-07-11 | 2014-03-12 | 宁波大学 | Trapping and recycling device for supercritical fluid in mold-pressing foaming process |
-
2013
- 2013-07-11 CN CN201310292613.2A patent/CN104275766B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0972626A2 (en) * | 1998-07-16 | 2000-01-19 | Mitsui Chemicals, Inc. | Method of adding supercritical carbon dioxide to thermoplastic resin and foamed articles |
| US7318713B2 (en) * | 2002-07-18 | 2008-01-15 | Trexel, Inc. | Polymer processing systems including screws |
| CN201338361Y (en) * | 2009-01-20 | 2009-11-04 | 北京中拓机械有限责任公司 | Supercritical fluid foaming agent conveying device |
| CN102167840A (en) * | 2011-04-12 | 2011-08-31 | 姜修磊 | Method for preparing polymer microporous foaming material by supercritical mould foaming |
| CN202895561U (en) * | 2012-11-29 | 2013-04-24 | 北京物资学院 | Gas adding device |
| CN203472039U (en) * | 2013-07-11 | 2014-03-12 | 宁波大学 | Trapping and recycling device for supercritical fluid in mold-pressing foaming process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3925751A1 (en) * | 2020-06-18 | 2021-12-22 | Basf Se | Process for continuously producing expanded foam particles |
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| Publication number | Publication date |
|---|---|
| CN104275766A (en) | 2015-01-14 |
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Effective date of registration: 20210813 Address after: Room 1903, building 5, 898 Xiuwen Road, Minhang District, Shanghai 201100 Patentee after: Weft solid anticorrosion resources (Shanghai) Co.,Ltd. Address before: No. 818, Fenghua Road, Zhenhai District, Ningbo City, Zhejiang Province Patentee before: Ningbo University |