CN209682860U - Using the preparation facilities of the extruded polystyrene foam board of CO2 foaming - Google Patents
Using the preparation facilities of the extruded polystyrene foam board of CO2 foaming Download PDFInfo
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- CN209682860U CN209682860U CN201822250883.8U CN201822250883U CN209682860U CN 209682860 U CN209682860 U CN 209682860U CN 201822250883 U CN201822250883 U CN 201822250883U CN 209682860 U CN209682860 U CN 209682860U
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- pump
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- 238000005187 foaming Methods 0.000 title claims abstract description 31
- 239000004795 extruded polystyrene foam Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 239000000155 melt Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 abstract description 23
- 239000004088 foaming agent Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 17
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 16
- 239000000203 mixture Substances 0.000 description 12
- 235000019441 ethanol Nutrition 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 229920002223 polystyrene Polymers 0.000 description 6
- 239000006260 foam Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000002667 nucleating agent Substances 0.000 description 3
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 3
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (e)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 description 2
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 2
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000001282 iso-butane Substances 0.000 description 2
- 235000013847 iso-butane Nutrition 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- BHNZEZWIUMJCGF-UHFFFAOYSA-N 1-chloro-1,1-difluoroethane Chemical compound CC(F)(F)Cl BHNZEZWIUMJCGF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical compound [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 description 1
- 239000002370 magnesium bicarbonate Substances 0.000 description 1
- 229910000022 magnesium bicarbonate Inorganic materials 0.000 description 1
- 235000014824 magnesium bicarbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The utility model discloses a kind of preparation facilities of extruded polystyrene foam board using CO2 foaming: including extrusion foaming unit utility model and liquid CO 2 injection device utility model, the extrusion foaming unit utility model includes the host utility model set gradually, heat exchanger utility model, head utility model and flattens traction device utility model, the injection pipe utility model of the liquid CO 2 injection device utility model is arranged in the barrel of the head utility model, and nozzle is close to the bottom of screw channel.The utility model changes traditional ecto-entad pressurization to realize the mode of CO2 foaming agent injection, it is changed to inject from inside to outside, CO2 foaming agent has been automatically performed during outside escape to be blended with PS melt, improve degree of mixing of the CO2 in PS melt, make CO2 be well positioned to meet as foaming agent technique requirement, to prepare slab, low-density plank provide technology premise.
Description
Technical field
The utility model relates to Screw extruder technology fields, and in particular to a kind of extruded polystyrene to be foamed using CO2
The preparation facilities of vinyl foam plate.
Background technique
XPS foam industry starts to walk from the nineties latter stage in last century, is an emerging industry, is made using HCFC-22/142b
For foaming agent.In China, XPS foam is substantially used as building thermal insulation material to use, and is mainly used in house insulation, is laid with high speed
Railway, heat preservation of refrigeration storage, plateau railway roadbed, airfield runway thermal insulation layer and field movable communication machine room, ventilation shaft, and it is other
As insulation and decoration (finishing) material etc. after Material cladding.
XPS foam industry is put into the industrial and commercial refrigeration air-conditioner row of China's submission as one of China HCFCs consumption industry
The second stage of industry, room air conditioner industry, polyurethane foam industry, extruded polystyrene foam industry etc. four consumption industries
HCFCs is eliminated in governing plan, its main feature is that possess plurality of medium-sized and small enterprises, it is widely distributed.For its technical level, money
The limitation of golden situation and managerial ability, and to the requirement that substitute safety uses, so that implementing in XPS foam industry
HCFCs, which is eliminated, faces many difficulties.
The alternative substitute technology of XPS industry is in the foam industry report of UNEP (United Nations Environment Program) (UNEP) publication
By repeatedly assessing, newest progress has also been incorporated into the annual update data of UNEP.XPS foam industry HCFCs foaming technique
Main substitute technology be that CO2/ alcohol/third component blowing agent combination foaming technique is aided with that is, using CO2 as primary blowing agent
The preparation that alcohol and ODP value are 0, the lower third component foaming agent of GWP value is auxiliary blowing agent progress XPS foaming plate.CO2
Boiling point it is very low, be -78.5 DEG C, the vapour pressure under room temperature is up to 6448kPa, and the relative molecular weight of CO2 is low, diffusion velocity
It is very fast, in extrusion and foaming process, in order to contain its prefoam in extruder barrel and head, the operating pressure of system
It is higher than using operating pressure of the HCFCs as foaming agent.In addition, the poor compatibility of CO2 and PS, molten in PS compared with HCFCs
Solubility in body is lower, it is also desirable to molten in PS to improve it by lifting system operating pressure or adjustment composition of raw materials
Xie Du.
In summary, CO2 is used to carry out the preparation of XPS foaming plate for main foaming agent, there are the following problems:
(1) existing screw extruder blending effect is undesirable, and CO2 can not be made preferably to be dispersed in PS melt, it is difficult to
Meet technique requirement of the CO2 as foaming agent；
(2) preparing plate of the thickness greater than 60mm has certain difficulty；
(3) density for the XPS plate material that product density height is produced using CO2 is higher than the product to foam using HCFCs,
The cost of product is caused to increase.
Utility model content
In order to overcome the drawbacks described above for carrying out the preparation of XPS foaming plate using CO2 as main foaming agent, improve in foaming process
The solubility that effect is blended, improves CO2 of CO2 and PS melt, it is poly- that the utility model provides a kind of extrusion molding using CO2 foaming
The preparation facilities of styrenic foams plate.
The technical solution adopted in the utility model is as follows:
A kind of preparation facilities of the extruded polystyrene foam board using CO2 foaming: including extrusion foaming unit and liquid
CO2 injection device, the extrusion foaming unit include the host set gradually, heat exchanger, head and flatten traction device, institute
The injection pipe for stating liquid CO 2 injection device is arranged in the barrel of the head, and nozzle is close to the bottom of screw channel.
The beneficial effects of the utility model are: the utility model changes traditional ecto-entad pressurization to realize that CO2 foams
The mode of agent injection, is changed to inject from inside to outside, and CO2 foaming agent has been automatically performed and PS melt during outside escape
It is blended, improves degree of mixing of the CO2 in PS melt, so that CO2 is well positioned to meet the technique requirement as foaming agent, for preparation
Slab, low-density plank provide technology premise.
Preferred: the screw rod of the head is equipped with one section of notch for lacking spiral shell rib, and the injection pipe setting is lacked described
In mouthful.
Preferred: the inside of the screw rod is arranged in the injection pipe.
It is preferred: the liquid CO 2 injection device include the head tank being sequentially communicated, force (forcing) pump, surge tank, injection pump and
Injection pipe.
Preferred: the force (forcing) pump is plunger pump, and the injection pump is diaphragm pump.
Preferred: the two sides of the force (forcing) pump or injection pump are equipped with valve.
Preferred: the nozzle of the injection pipe is arranged in the melt zone of the host.
Detailed description of the invention
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Fig. 2 is the schematic diagram of screw rod in the embodiment of the present invention.
Fig. 3 is the enlarged drawing in the embodiment of the present invention at A.
Extrusion foaming unit 1, host 101, heat exchanger 102, head 103, flattens traction dress at liquid CO 2 injection device 2
Set 104, notch 105, head tank 201, force (forcing) pump 202, surge tank 203, injection pump 204, injection pipe 205.
Specific embodiment
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
In embodiment, as shown in Fig. 1 ~ 3, a kind of preparation method of the extruded polystyrene foam board using CO2 foaming: will
Extrusion foaming unit is added to after polystyrene raw material, nucleating agent and blowing promotor mixing, is injected in after CO2 foaming agent and is sent out
Bubble；The CO2 foaming agent is spread from inside to outside along the radial direction of screw rod.The present embodiment changes traditional ecto-entad and pressurizes to realize
The mode of CO2 foaming agent injection, is changed to inject from inside to outside, CO2 foaming agent be automatically performed during outside escape with
The blending of PS melt improves degree of mixing of the CO2 in PS melt, is well positioned to meet CO2 and wants as the technique of foaming agent
Ask, to prepare slab, low-density plank provide technology premise.
In embodiment: the polystyrene raw material is polystyrene blend styrene-acrylonitrile copolymer.Specific polyphenyl
Ethylene raw is general purpose grade, 1 ~ 25g/10min of melt flow rate (MFR), most preferably 1 ~ 10g/10min of melt flow rate (MFR), in raw material
Styrene-acrylonitrile copolymer account for polystyrene blend styrene-acrylonitrile copolymer total amount mass percentage be 1 ~
20%, to further increase expansion ratio.
In embodiment: the nucleating agent refers to carbonate nucleating agent, the preferably mixing of sodium bicarbonate and citric acid composition
Mixture, sodium carbonate and the citric acid group of object, the mixture of calcium bicarbonate and citric acid composition, magnesium bicarbonate and citric acid composition
At mixture, calcium carbonate and citric acid composition mixture or the quality percentage of mixture that is formed with citric acid of magnesium carbonate contain
Amount is the 0.5 ~ 1% of raw material；Talcum powder, calcium silicates, graphite or carbon black mass percentage be the 0.5 ~ 2% of raw material.
In embodiment: the blowing promotor include purity be greater than 99% ethyl alcohol, it is compound with HCFC-134a, HFC-152a,
One of normal butane, iso-butane or HFO-1234ze or a variety of.In the blowing promotor, the mass percentage of ethyl alcohol is poly-
1 ~ 3%, HCFC-134a of styrene material, HFC-152a, normal butane, iso-butane and the total quality percentage of HFO-1234ze contain
Amount is the 1 ~ 2% of raw material.The molecular weight of ethyl alcohol is 46.0, and the molecular weight with CO2 is very close to (44.0), vapor phase thermal conductivity
(25 DEG C) are 14.4mW/m.K, and diffusion coefficient is substantially less than CO2.The boiling point of ethyl alcohol is 78 DEG C, is low volatility foaming agent.Ethyl alcohol
There is significant plasticization to PS melt, the viscosity of PS melt can be greatly reduced, especially with the increase of ethanol consumption, PS
The viscosity of melt persistently reduces, and CO2 weakens the plasticization effect of PS melt as dosage increases, and becomes less significant.Just
It is this significant plasticization due to ethyl alcohol, the temperature of PS melt can be greatly reduced.
In embodiment: the CO2 foaming agent is the liquid CO 2 that purity is greater than 99%, and mass percentage is polystyrene
The 3 ~ 5% of raw material, the CO2 foaming agent are injected in the melt zone of the extrusion foaming unit, 20 ~ 25MPa of injection pressure.
In embodiment, as shown in Fig. 1 ~ 3, a kind of preparation facilities of the extruded polystyrene foam board using CO2 foaming,
Be characterized in that: including extrusion foaming unit 1 and liquid CO 2 injection device 2, the extrusion foaming unit 1 includes setting gradually
Host 101, heat exchanger 102, head 103 and pressing traction device 104, the injection pipe 205 of the liquid CO 2 injection device 2
It is arranged in the barrel of the head 103, and nozzle is close to the bottom of screw channel.The present embodiment structure is that a kind of realization is above-mentioned
The device of preparation method, injection pipe 205 can be realized CO2 foaming agent and expand from inside to outside along the radial direction of screw rod through reasonable settings
It dissipates, to achieve the effect that improve degree of mixing of the CO2 in PS melt.
In embodiment, as shown in figure 3, the screw rod of the head 103 is equipped with one section of notch 105 for lacking spiral shell rib, it is described
Injection pipe 205 is arranged in the notch 105.This structure is a kind of specific arrangement of injection pipe 205.In addition to this,
Injection pipe 205 can also be provided inside screw, realize CO2 foaming agent along spiral shell in the form of injection hole is opened at the screw channel bottom in screw rod
The radial direction of bar is spread from inside to outside.
In embodiment, as shown in Figure 1, the liquid CO 2 injection device 2 includes head tank 201, the force (forcing) pump being sequentially communicated
202, surge tank 203, injection pump 204 and injection pipe 205.When using CO2 as foaming agent, the liquid CO 2 that supplier provides is more
It for -20 DEG C, 2MPa or so, needs to carry out insulation to pipeline, pump, valve etc., therefore, the present embodiment is used in pipe-line system
The method of middle surge tank 203 maintains the pressure of surge tank 203 in 6MPa or so, and delivery temperature is close to environment temperature.Due to output
Pressure is up to 20 ~ 25MPa, and when using CO2 as foaming agent, preferred diaphragm pump makees injection pump 204, to prevent leakage, and
From cost consideration, select plunger pump as force (forcing) pump 202.In addition force (forcing) pump 202 and 204 two sides of injection pump should be all equipped with
Valve or setting bypass.
Obviously, the above embodiments of the present invention is merely to illustrate that examples for clearly illustrating the present invention, and is not
Limitations of the embodiments of the present invention.For those of ordinary skill in the art, on above explained basis
On can also make other various forms of variations or variation.There is no need and unable to give poor example to all embodiments.
And these connotation changes and variations that derived from for belonging to the utility model still fall within the utility model
Protection scope.
Claims (6)
1. a kind of preparation facilities of the extruded polystyrene foam board using CO2 foaming, it is characterised in that: including extrusion foaming machine
Group (1) and liquid CO 2 injection device (2), the extrusion foaming unit (1) includes host (101), the heat exchanger set gradually
(102), injection pipe (205) setting of head (103) and pressing traction device (104), the liquid CO 2 injection device (2) exists
In the barrel of the head (103), and nozzle is close to the bottom of screw channel；The screw rod of the head (103) is equipped with one section
Lack the notch (105) of spiral shell rib, the injection pipe (205) is arranged in the notch (105).
2. the preparation facilities of the extruded polystyrene foam board according to claim 1 using CO2 foaming, feature exist
In: the inside of the screw rod is arranged in the injection pipe (205).
3. the preparation facilities of the extruded polystyrene foam board according to claim 1 using CO2 foaming, feature exist
In: the liquid CO 2 injection device (2) includes the head tank (201) being sequentially communicated, force (forcing) pump (202), surge tank (203), note
Enter pump (204) and injection pipe (205).
4. the preparation facilities of the extruded polystyrene foam board according to claim 3 using CO2 foaming, feature exist
In: the force (forcing) pump (202) is plunger pump, and the injection pump (204) is diaphragm pump.
5. the preparation facilities of the extruded polystyrene foam board according to claim 3 using CO2 foaming, feature exist
In: the two sides of the force (forcing) pump (202) or injection pump (204) are equipped with valve.
6. the preparation facilities of the extruded polystyrene foam board according to claim 1 using CO2 foaming, feature exist
In: the nozzle of the injection pipe (205) is arranged in the melt zone of the host (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822250883.8U CN209682860U (en) | 2018-12-29 | 2018-12-29 | Using the preparation facilities of the extruded polystyrene foam board of CO2 foaming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822250883.8U CN209682860U (en) | 2018-12-29 | 2018-12-29 | Using the preparation facilities of the extruded polystyrene foam board of CO2 foaming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209682860U true CN209682860U (en) | 2019-11-26 |
Family
ID=68597568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822250883.8U Active CN209682860U (en) | 2018-12-29 | 2018-12-29 | Using the preparation facilities of the extruded polystyrene foam board of CO2 foaming |
Country Status (1)
| Country | Link |
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| CN (1) | CN209682860U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501192A (en) * | 2018-12-29 | 2019-03-22 | 浙江金佳塑料机械有限公司 | Using CO2The preparation method and preparation facilities of the extruded polystyrene foam board of foaming |
| CN113942208A (en) * | 2021-10-25 | 2022-01-18 | 广州海天塑胶有限公司 | Automobile interior trim part prepared by micro-foaming injection molding process |
-
2018
- 2018-12-29 CN CN201822250883.8U patent/CN209682860U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501192A (en) * | 2018-12-29 | 2019-03-22 | 浙江金佳塑料机械有限公司 | Using CO2The preparation method and preparation facilities of the extruded polystyrene foam board of foaming |
| CN113942208A (en) * | 2021-10-25 | 2022-01-18 | 广州海天塑胶有限公司 | Automobile interior trim part prepared by micro-foaming injection molding process |
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