CN102490306A - Injection method and system of modified carbon dioxide for producing foamed extruded sheet - Google Patents
Injection method and system of modified carbon dioxide for producing foamed extruded sheet Download PDFInfo
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- CN102490306A CN102490306A CN201110429794XA CN201110429794A CN102490306A CN 102490306 A CN102490306 A CN 102490306A CN 201110429794X A CN201110429794X A CN 201110429794XA CN 201110429794 A CN201110429794 A CN 201110429794A CN 102490306 A CN102490306 A CN 102490306A
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Abstract
The invention relates to the production of a foamed extruded board, and particularly relates to an injection method and system of modified carbon dioxide for producing an extruded sheet. The method is characterized in that liquid carbon dioxide and an accelerant are mixed under high pressure, and then injected to an extruder for foaming. The injection system of modified carbon dioxide for producing the foamed extruded sheet comprises a carbon dioxide conveying system and an accelerant conveying system, both of which are connected with a high-pressure mixer, wherein the liquid outlet of the high-pressure mixer is connected with the extruder by a pipeline. According to the invention, the problems of instable physical shape, low foaming ratio and the like of carbon dioxide during the injection process are solved, thus the comprehensive performance of the extruded sheet product are greatly improved and achieve or are superior to national standard; carbon dioxide and the accelerant are accurately and quantitatively conveyed to the extruder system in a liquid form, thus the extruded sheet product has uniform and fine pore distribution and the performance indexes of the product achieve the national standard requirements; and the system has the characteristics of reasonable structure configuration, convenience for use and the like.
Description
Technical field
The present invention relates to the to foam production of extrusion molding sheet material is with particularly producing the foaming extruded sheet with modification carbon dioxide method for implanting and system.
Background technology
Traditional XPS extruded plastic foam warming plate production line is to use fluorine series blowing agent and chain hydrocarbon.As everyone knows, freon is the main cause that causes ozone hole, uses freon to be unfavorable for environmental protection, by international community is forbidden; And chain hydrocarbon has inflammability, influences production safety.
At present; The XPS plastic extrusion heated board that in the production of extruded plastic foam warming plate, has used carbon dioxide foaming agent to produce; But; Existing carbon dioxide foaming agent in injection process, gets into the carbon dioxide of body and the melt resolution is low, diffusance is high, cause and be difficult to mixing or mixing inhomogeneously with melt, and causing can't the ordinary production qualified product.And the boiling point of carbon dioxide is-78 ℃, in injection process, receives the influence of environment temperature and transient pressure, is prone to cause gasification or knot dry ice, causes carbon dioxide can not stablize injection, can't reach the purpose of smooth foaming.The insulation extruded sheet unit weight for building that the most generally uses according to national requirements requires 30kg/m
3More than, below the thermal conductivity factor 0.030w/mk, still, existing titanium dioxide carbon foaming extruded sheet just adds the use amount of carbon dioxide with reduction freon in freon, or the simple ethanol that adds is as auxiliary agent in carbon dioxide.The product unit weight of being produced is all at 36kg/m
3More than, cause the raw materials for production cost to increase by 20%; Thermal conductivity factor is greater than 0.030w/mk, and heat-insulating property can not be up to state standards fully, and this is that the technical staff knows together in the present technique field.
Summary of the invention
The objective of the invention is to solve the problem that prior art exists, provide a kind of carbon dioxide foaming agent to inject the production foaming extruded sheet stable, that expansion ratio is high with modification carbon dioxide injected system.
For addressing the above problem, the present invention adopts following technical scheme: a kind of production foaming extruded sheet is characterized in that foaming injecting extruder after liquid carbon dioxide and the promoter high pressure mixing with modification carbon dioxide method for implanting.
Above-mentioned promoter is alcohols and alkyl phosphoric acid ester admixture.
Above-mentioned alcohols is methyl alcohol and ethanol; The proportion relation of its percent by volume is: the distilled water of the absolute ethyl alcohol of 50%-60%, the methyl alcohol of 20%-30%, 5%-10% alkyl phosphate, 10%-15% mixes.
The pressure of above-mentioned high pressure mixing is 8-10MPa.
A kind of production foaming extruded sheet is with modification carbon dioxide injected system; Comprise carbon dioxide fluid reservoir, measuring pump, vacuum tank; The liquid outlet that it is characterized in that the carbon dioxide fluid reservoir links to each other with the inlet of CO 2 high pressure delivery pump; The liquid outlet of CO 2 high pressure delivery pump links to each other with the carbon dioxide vacuum tank through pipeline; The inlet of CO 2 high pressure measuring pump links to each other with the carbon dioxide vacuum tank through pipeline, and the liquid outlet of CO 2 high pressure measuring pump links to each other with the high pressure mixing device through pipeline; The inlet of promoter voltage stabilizing measuring pump links to each other with the promoter fluid reservoir through pipeline; The liquid outlet of promoter voltage stabilizing measuring pump links to each other with the inlet of promoter high-pressure metering pump through pipeline, and the liquid outlet of the promoter high-pressure metering pump pipeline that was connected links to each other with the high pressure mixing device; The liquid outlet of high pressure mixing device links to each other with extruder through pipeline, on high pressure mixing device and pipeline that extruder links to each other, check valve is installed.
On the liquid outlet of above-mentioned promoter voltage stabilizing measuring pump and the pipeline between the promoter high-pressure metering pump, stable-pressure device is installed.
On the liquid outlet of above-mentioned CO 2 high pressure measuring pump and the pipeline that the high pressure mixing device links to each other the carbon dioxide check valve is installed.
On the liquid outlet of above-mentioned promoter high-pressure metering pump and the pipeline that the high pressure mixing device links to each other the promoter check valve is installed.
Characteristics of the present invention are following: 1, with liquid carbon dioxide with after promoter is mixed in the high pressure mixing device; Inject extruder; Solve carbon dioxide problems such as physical aspect is unstable in injection process, expansion ratio is on the low side, also goods unit weight has been reduced to 32 kg/m
3Or below, thermal conductivity factor is reduced to below the 0.028w/mk, thereby improves the combination property of extruded sheet goods greatly, reaches or is superior to national standard.2, adopt voltage stabilizing measuring pump and high-pressure metering pump with accurately quantitative being transported in the extruder system of form with liquid state of blowing agent carbon dioxide and promoter, thereby make extruded sheet goods distribution of cells uniform and delicate, the product properties index all reaches the GB requirement.3, this system has characteristics such as structure configuration is reasonable, easy to use.
Description of drawings
Fig. 1 is that blown with carbon dioxide extruded sheet according to the invention production is with modification carbon dioxide injected system structural representation.
Among the figure: 1 carbon dioxide fluid reservoir, 2 CO 2 high pressure delivery pumps, 3 carbon dioxide vacuum tanks; 4 promoter voltage stabilizing measuring pumps, 5 promoter fluid reservoirs, 6 promoter check valves; 7 promoter high-pressure metering pumps, 8 CO 2 high pressure measuring pumps, 9 carbon dioxide check valves; 10 high pressure mixing devices, 11 check valves, 12 extruders.
The specific embodiment
Produce the foaming extruded sheet with modification carbon dioxide method for implanting; This method is liquid carbon dioxide and promoter to be injected extruder foam after high pressure mixing; Promoter is the mixture of methyl alcohol, ethanol and alkyl phosphate, its proportion relation such as following table: unit: percent by volume.
| Embodiment 1 | Methyl alcohol | Absolute ethyl alcohol | Alkyl phosphate | Distilled water | Pressure MPa |
| Embodiment 2 | 30 | 50 | 10 | 10 | 8 |
| |
20 | 60 | 5 | 15 | 10 |
| |
26 | 56 | 7 | 11 | 9 |
In above-mentioned 1-4 embodiment; The system that is adopted is as shown in Figure 1; The liquid outlet of carbon dioxide fluid reservoir 1 links to each other with the inlet of CO 2 high pressure delivery pump 2; The liquid outlet of CO 2 high pressure delivery pump 2 links to each other with carbon dioxide vacuum tank 3 through pipeline; The inlet of CO 2 high pressure measuring pump 8 links to each other with carbon dioxide vacuum tank 3 through pipeline, and the liquid outlet of CO 2 high pressure measuring pump passes through pipeline and links to each other with high pressure mixing device 10, on CO 2 high pressure measuring pump and pipeline that the high pressure mixing device links to each other, carbon dioxide check valve 9 is installed; The inlet of promoter voltage stabilizing measuring pump 4 links to each other with promoter fluid reservoir 5 through pipeline; The liquid outlet of promoter voltage stabilizing measuring pump links to each other with the inlet of promoter high-pressure metering pump 7 through pipeline; The liquid outlet of the promoter high-pressure metering pump pipeline that was connected links to each other with the high pressure mixing device, on promoter high-pressure metering pump and pipeline that the high pressure mixing device links to each other, promoter check valve 6 is installed; The liquid outlet of high pressure mixing device links to each other with extruder 12 through pipeline, on high pressure mixing device and pipeline that extruder links to each other, check valve 11 is installed.For the pressure stability of the accelerator systems that guarantees, on the liquid outlet of voltage stabilizing measuring pump and the pipeline between the promoter high-pressure metering pump, stable-pressure device is installed.
Claims (8)
1. produce the foaming extruded sheet with modification carbon dioxide method for implanting for one kind, it is characterized in that foaming injecting extruder after liquid carbon dioxide and the promoter high pressure mixing.
2. production foaming extruded sheet according to claim 1 is characterized in that with modification carbon dioxide method for implanting above-mentioned promoter is alcohols and alkyl phosphoric acid ester admixture.
3. production foaming extruded sheet according to claim 2 is characterized in that with modification carbon dioxide method for implanting above-mentioned alcohols is methyl alcohol and ethanol; The proportion relation of its percent by volume is: the distilled water of the absolute ethyl alcohol of 50%-60%, the methyl alcohol of 20%-30%, 5%-10% alkyl phosphate, 10%-15% mixes.
4. production foaming extruded sheet according to claim 3 is with modification carbon dioxide method for implanting, and the pressure that it is characterized in that above-mentioned high pressure mixing is 8-10MPa.
5. produce the foaming extruded sheet with modification carbon dioxide injected system for one kind; Comprise carbon dioxide fluid reservoir, measuring pump, vacuum tank; The liquid outlet that it is characterized in that carbon dioxide fluid reservoir (1) links to each other with the inlet of CO 2 high pressure delivery pump (2); The liquid outlet of CO 2 high pressure delivery pump (2) links to each other with carbon dioxide vacuum tank (3) through pipeline; The inlet of CO 2 high pressure measuring pump (8) links to each other with carbon dioxide vacuum tank (3) through pipeline, and the liquid outlet of CO 2 high pressure measuring pump (8) links to each other with high pressure mixing device (10) through pipeline; The inlet of promoter voltage stabilizing measuring pump (4) links to each other with promoter fluid reservoir (5) through pipeline; The liquid outlet of promoter voltage stabilizing measuring pump (4) links to each other with the inlet of promoter high-pressure metering pump (7) through pipeline, and the liquid outlet of promoter high-pressure metering pump (7) pipeline that was connected links to each other with the high pressure mixing device; The liquid outlet of high pressure mixing device links to each other with extruder (12) through pipeline, on high pressure mixing device and pipeline that extruder links to each other, check valve is installed.
6. production according to claim 5 foaming extruded sheet is with modification carbon dioxide injected system, it is characterized in that on the liquid outlet of above-mentioned promoter voltage stabilizing measuring pump (4) and the pipeline between the promoter high-pressure metering pump (7), stable-pressure device being installed.
7. production according to claim 6 foaming extruded sheet is with modification carbon dioxide injected system, on the liquid outlet that it is characterized in that above-mentioned CO 2 high pressure measuring pump (8) and the pipeline that high pressure mixing device (10) links to each other carbon dioxide check valve (9) is installed.
8. production according to claim 7 foaming extruded sheet is with modification carbon dioxide injected system, on the liquid outlet that it is characterized in that above-mentioned promoter high-pressure metering pump (7) and the pipeline that the high pressure mixing device links to each other promoter check valve (6) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110429794XA CN102490306A (en) | 2011-12-20 | 2011-12-20 | Injection method and system of modified carbon dioxide for producing foamed extruded sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110429794XA CN102490306A (en) | 2011-12-20 | 2011-12-20 | Injection method and system of modified carbon dioxide for producing foamed extruded sheet |
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| Publication Number | Publication Date |
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| CN102490306A true CN102490306A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110429794XA Pending CN102490306A (en) | 2011-12-20 | 2011-12-20 | Injection method and system of modified carbon dioxide for producing foamed extruded sheet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273659A (en) * | 2013-06-23 | 2013-09-04 | 宁夏鼎盛阳光保温材料有限公司 | Carbon dioxide foaming type plastic extrusion plate equipment |
| CN104175444A (en) * | 2014-08-01 | 2014-12-03 | 宁夏鼎盛阳光保温材料有限公司 | Carbon dioxide foaming equipment for extruded sheets |
| CN104175445A (en) * | 2014-08-01 | 2014-12-03 | 马少云 | Supercritical carbon dioxide foaming device applied to plastic extruding plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158626A (en) * | 1994-11-02 | 1997-09-03 | 索尔微氟及衍生物有限公司 | Foaming agents containing liquid carbon dioxide |
| CN101921404A (en) * | 2010-08-13 | 2010-12-22 | 刘志辉 | Preparation method of CO2 plastic foaming agent and injection system of CO2 plastic foaming agent |
| CN202439173U (en) * | 2011-12-20 | 2012-09-19 | 宁夏鼎盛阳光保温材料有限公司 | Modified carbon dioxide injection system for producing foaming extruded sheets |
-
2011
- 2011-12-20 CN CN201110429794XA patent/CN102490306A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158626A (en) * | 1994-11-02 | 1997-09-03 | 索尔微氟及衍生物有限公司 | Foaming agents containing liquid carbon dioxide |
| CN101921404A (en) * | 2010-08-13 | 2010-12-22 | 刘志辉 | Preparation method of CO2 plastic foaming agent and injection system of CO2 plastic foaming agent |
| CN202439173U (en) * | 2011-12-20 | 2012-09-19 | 宁夏鼎盛阳光保温材料有限公司 | Modified carbon dioxide injection system for producing foaming extruded sheets |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273659A (en) * | 2013-06-23 | 2013-09-04 | 宁夏鼎盛阳光保温材料有限公司 | Carbon dioxide foaming type plastic extrusion plate equipment |
| 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 |
| CN104175444A (en) * | 2014-08-01 | 2014-12-03 | 宁夏鼎盛阳光保温材料有限公司 | Carbon dioxide foaming equipment for extruded sheets |
| CN104175445A (en) * | 2014-08-01 | 2014-12-03 | 马少云 | Supercritical carbon dioxide foaming device applied to plastic extruding plate |
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Application publication date: 20120613 |