CN1486782A - High-hydroscopicity polymer resin microcapsule and its production process - Google Patents
High-hydroscopicity polymer resin microcapsule and its production process Download PDFInfo
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- CN1486782A CN1486782A CNA031109004A CN03110900A CN1486782A CN 1486782 A CN1486782 A CN 1486782A CN A031109004 A CNA031109004 A CN A031109004A CN 03110900 A CN03110900 A CN 03110900A CN 1486782 A CN1486782 A CN 1486782A
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- microcapsule
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- polymer resin
- hydroscopicity
- wall material
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Abstract
The present invention belongs to the field of microcapsule preparing technology. The high-hydroscopicity polymer resin microcapsule has wall material of hardened oil with smelting point higher than 40 deg.c and core material of acrylic acid and acrylamide polymer. The preparation process includes smelting the wall material, fluidizing the core material, air suspension spraying, solidifying and other stages. The present invention solves the problem of high-hydroscopicity polymer to absorb water to denature, makes it possess excellent flowability and prepares microcapsule with targeting release feature. The wrapping material separates the high-hydroscopicity matter from targeting release feature. The wrapping material separates the high-hydroscopicity matter from outer environment, and under certain environment condition, the core material may be released fast to absorb water and to expand. The said process of the present invention is suitable for forming microcapsule with solid core material, and is simple, practical, good in filming performance and homogeneous in embedding.
Description
Technical field
The invention belongs to the preparing technical field of microcapsules, is to utilize microencapsulation technology that the super absorbent resin core is coated in the small wall material of granularity, forms a kind of new microcapsule product.
Background technology
Along with the minimizing of underground petroleum deposit, oil needs the exploitation of the degree of depth, yet along with the increase of the degree of depth, underground physical features becomes increasingly complex, and leak increases, and the phenomenon of short circuit often occurs, brings very big difficulty to exploitation, and this just needs leak stopping.The method of leak stopping and material have a variety of, and as NFDF8012 type sealing agent, it mainly is formulated by multiple macromolecular compounds such as nanmu root powder, humate, carboxymethyl celluloses, is a kind of compound drill-feeding plugging agent; The YYCM sealing agent is that the solution sealing agent combines with the suspension inorganic matter, both can all right leak stopping of water blockoff.Many at present employing bridging plug agent mud and jello mud are as the oil field sealing agent.And yet there are no report about the exploitation that microcapsules are used for leak stopping aspect, oil field.
Summary of the invention
The purpose of this invention is to provide that a kind of consumption is little, plugging effect good, high water absorbency polymer resin microcapsule and production technology thereof easy to use.
Technical solution of the present invention is, a kind of high water absorbency polymer resin microcapsule, wall material are common hardened fat, fusing point＞40 ℃; Core is the polymer of acrylic acid and acrylamide.
The high water absorbency polymer resin microcapsule production technology that is used to prepare the high water absorbency polymer resin microcapsule is to make the fusing of wall material be in liquid state; Core material particle is placed fluid bed, in keeping fluid bed under the condition of the abundant fluidisation of core, with the fluid injector diameter is 1～6.0mm, the inlet pressure of gas nozzle is the second fluid nozzle of 0.1～0.4Mpa, nozzle distance bed upper level is 5～20cm, selects compressed air require at 0.4～7.0m
3/ h, charging rate fully atomizes wall material liquation at 50～400ml/h, core is coated continued operation 0.5～4h; The fluidized-bed layer temperature remains on 20～40 ℃, attached to the wall material droplet cooling curing on core surface, forms the high-hydroscopicity microcapsule granule.
The invention has the beneficial effects as follows that consumption is little, plugging effect good, using can be more convenient.Core is coated completely to be isolated from the outside, but the wall material can melt again at a certain temperature, and quick-release is emitted core, and the rapid imbibition of core reaches the purpose of leak stopping.This product also has the function of water blockoff simultaneously, can be widely used in the building operations.
Description of drawings
Fig. 1 is a process chart of the present invention
The specific embodiment
With core by 28 orders～38 purpose standard screens, with the particle in this particle size range as core.
2. take by weighing a certain amount of fusing point in the fusion of 56 ℃ sclerosis lard, get 400ml in beaker, place 90 ℃ thermostat water bath.
3. getting the good core 900g of screening, place fluid bed, is 200m in the fluidization air amount
3Fluidisation under the condition of/h.
4. at air supply 0.64m
3/ h, inlet amount is 124ml/h, condition under, by second fluid nozzle, feed liquid is sprayed onto the core surface.
5. bed temperature remains on 34 ℃, continued operation 2.5h.The microcapsule particle of taking-up to solidify.
Claims (3)
1. high water absorbency polymer resin microcapsule, it is characterized in that: the wall material is a hardened fat, fusing point＞40 ℃; Core is the polymer of acrylic acid and acrylamide.
2. high water absorbency polymer resin microcapsule according to claim 1 is characterized in that: hardened fat is common hardened fat.
3. be used to prepare the high water absorbency polymer resin microcapsule production technology of the described high water absorbency polymer resin microcapsule of claim 1, it is characterized in that: make the fusing of wall material be in liquid state; Core material particle is placed fluid bed, in keeping fluid bed under the condition of the abundant fluidisation of core, with the fluid injector diameter is 1～6.0mm, the inlet pressure of gas nozzle is the second fluid nozzle of 0.1～0.4Mpa, nozzle distance bed upper level is 5～20cm, selects compressed air require at 0.4～7.0m
3/ h, charging rate fully atomizes wall material liquation at 50～400ml/h, core is coated continued operation 0.5～4h; The fluidized-bed layer temperature remains on 20～40 ℃, attached to the wall material droplet cooling curing on core surface, forms the high-hydroscopicity microcapsule granule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110900 CN1264602C (en) | 2003-01-16 | 2003-01-16 | High-hydroscopicity polymer resin microcapsule and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110900 CN1264602C (en) | 2003-01-16 | 2003-01-16 | High-hydroscopicity polymer resin microcapsule and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1486782A true CN1486782A (en) | 2004-04-07 |
| CN1264602C CN1264602C (en) | 2006-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03110900 Expired - Fee Related CN1264602C (en) | 2003-01-16 | 2003-01-16 | High-hydroscopicity polymer resin microcapsule and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1264602C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146280A (en) * | 2011-02-28 | 2011-08-10 | 西南石油大学 | Controllable expanded plugging agent |
| CN103045212A (en) * | 2013-01-07 | 2013-04-17 | 中国海洋石油总公司 | Microcapsule guar gum and preparation method thereof |
| CN103408778A (en) * | 2013-07-30 | 2013-11-27 | 中国石油大学(华东) | Hydrophilia-wrapped water-absorbent resin microsphere and preparation method thereof |
| CN106000248A (en) * | 2016-05-30 | 2016-10-12 | 常熟理工学院 | Preparation method of controllable-expansion superwater absorbent resin microcapsules |
| CN106118481A (en) * | 2016-06-29 | 2016-11-16 | 浙江鲁班建筑防水有限公司 | Self-healing polymers cement waterproof paint and preparation method thereof |
| CN109097011A (en) * | 2018-08-13 | 2018-12-28 | 西南石油大学 | A method of based on ground temperature heating capsule-type expander and its for block formation leakage and its improve stratum bearing capacity |
| CN110452672A (en) * | 2019-07-19 | 2019-11-15 | 中国石油天然气股份有限公司 | A kind of oil gas well shaft temporarily stifled soluble capsules diverting agent and preparation and construction method |
| CN110694559A (en) * | 2018-07-10 | 2020-01-17 | 中国科学院金属研究所 | Preparation method and application of two-dimensional material nanosheet coated microspheres |
| CN111410945A (en) * | 2020-03-24 | 2020-07-14 | 中国石油天然气股份有限公司 | Capsule temporary plugging well killing fluid and preparation method thereof |
| CN113528105A (en) * | 2020-04-17 | 2021-10-22 | 中石化石油工程技术服务有限公司 | Geopolymer-based dual plugging agent and preparation and application methods thereof |
-
2003
- 2003-01-16 CN CN 03110900 patent/CN1264602C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146280A (en) * | 2011-02-28 | 2011-08-10 | 西南石油大学 | Controllable expanded plugging agent |
| CN103045212A (en) * | 2013-01-07 | 2013-04-17 | 中国海洋石油总公司 | Microcapsule guar gum and preparation method thereof |
| CN103045212B (en) * | 2013-01-07 | 2015-08-19 | 中国海洋石油总公司 | A kind of Microcapsule guar gum and preparation method thereof |
| CN103408778A (en) * | 2013-07-30 | 2013-11-27 | 中国石油大学(华东) | Hydrophilia-wrapped water-absorbent resin microsphere and preparation method thereof |
| CN103408778B (en) * | 2013-07-30 | 2014-11-12 | 中国石油大学(华东) | Hydrophilia-wrapped water-absorbent resin microsphere and preparation method thereof |
| CN106000248B (en) * | 2016-05-30 | 2018-07-13 | 常熟理工学院 | A kind of preparation method of controllable expansion super moisture absorbing resin microcapsules |
| CN106000248A (en) * | 2016-05-30 | 2016-10-12 | 常熟理工学院 | Preparation method of controllable-expansion superwater absorbent resin microcapsules |
| CN106118481A (en) * | 2016-06-29 | 2016-11-16 | 浙江鲁班建筑防水有限公司 | Self-healing polymers cement waterproof paint and preparation method thereof |
| CN110694559A (en) * | 2018-07-10 | 2020-01-17 | 中国科学院金属研究所 | Preparation method and application of two-dimensional material nanosheet coated microspheres |
| CN109097011A (en) * | 2018-08-13 | 2018-12-28 | 西南石油大学 | A method of based on ground temperature heating capsule-type expander and its for block formation leakage and its improve stratum bearing capacity |
| CN109097011B (en) * | 2018-08-13 | 2021-04-30 | 西南石油大学 | Capsule type expansion body based on ground temperature heating and method for blocking formation leakage and improving formation bearing capacity of capsule type expansion body |
| CN110452672A (en) * | 2019-07-19 | 2019-11-15 | 中国石油天然气股份有限公司 | A kind of oil gas well shaft temporarily stifled soluble capsules diverting agent and preparation and construction method |
| CN111410945A (en) * | 2020-03-24 | 2020-07-14 | 中国石油天然气股份有限公司 | Capsule temporary plugging well killing fluid and preparation method thereof |
| CN113528105A (en) * | 2020-04-17 | 2021-10-22 | 中石化石油工程技术服务有限公司 | Geopolymer-based dual plugging agent and preparation and application methods thereof |
| CN113528105B (en) * | 2020-04-17 | 2022-09-09 | 中石化石油工程技术服务有限公司 | Geopolymer-based dual plugging agent and preparation and application methods thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1264602C (en) | 2006-07-19 |
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