CN105504176A - Acrylic acid/polymethyl methacrylate/acrylonitrile copolymer water antisludging agent and preparing method thereof - Google Patents
Acrylic acid/polymethyl methacrylate/acrylonitrile copolymer water antisludging agent and preparing method thereof Download PDFInfo
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- CN105504176A CN105504176A CN201510899995.4A CN201510899995A CN105504176A CN 105504176 A CN105504176 A CN 105504176A CN 201510899995 A CN201510899995 A CN 201510899995A CN 105504176 A CN105504176 A CN 105504176A
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- vinylformic acid
- acrylonitrile
- polymethylmethacryla
- acrylic acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a acrylic acid/polymethyl methacrylate/acrylonitrile copolymer water antisludging agent and a preparing method thereof. The antisludging agent is prepared from the components in percentage by weight: 50-70% of acrylic acid, 20-45% of polymethyl methacrylate and 5-25% of acrylonitrile. The preparing method comprises the following steps: (1) weighing the acrylic acid, polymethyl methacrylate and acrylonitrile proportionally, and uniformly mixing in a mixing machine; (2) performing eight-region melting and extruding on the mixed material by a double-screw extruder for pelleting. The antisludging agent has a better antisludging effect for high hardness hot water, and meanwhile, the preparing method is simple in process and low in cost.
Description
Technical field
The invention belongs to high rigidity GEOTHERMAL WATER scale inhibition processing technology field, specifically refer to a kind of vinylformic acid/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors and preparation method thereof.
Background technology
Geothermal energy belongs to the new forms of energy type determined in China " Renewable Energy Law " (2006).Existing conventional energy resources-coal, oil and natural gas, stock number is limited, can bring environmental pollution when using.Being applied as of Geothermal energy is energy-conservation, reduction of discharging provides the effective way that solves the large predicament of the existing energy above-mentioned two.But, in Geothermal energy application the fouling of GEOTHERMAL WATER become must faced by a difficult problem.For this reason, the scale control treatments of GEOTHERMAL WATER is become to the hot research direction in technology.
Scale inhibitors process is adopted to remain the Main Means of current adopted antiscale to GEOTHERMAL WATER.Organic polymer Scale inhibitors is adopted to have the various feature of few, the applicable water quality type of consumption.The organic polymer Scale inhibitors of acrylic copolymer to be a class with vinylformic acid be main component, under suitable initiator effect, the polymkeric substance formed with one or more monomer copolymerizations.This base polymer is to Ca
2+etc. having very strong sequestering power, not only there is dispersion and cohesion, the normal alignment of lattice can also be disturbed in the crystallisation process of fouling crystal, thus reach the object of scale inhibition.But, the inhibitor mechanism of organic polymer Scale inhibitors relates to the complicated physical and chemical process such as diffusion, adsorption desorption, crystal growth and coordination, the scale effect of various organic polymer Scale inhibitors or respectively have stronger one side in diffusion or at adsorption desorption or at crystal growth or in coordination etc., scale inhibition performance is not of uniform size.Therefore, traditional at present acrylic copolymer just just has higher scale inhibition performance in the water of comparatively soft (total hardness≤700mg/L).Test shows, the static-state scale inhibition rate of several commercially available conventional organic inhibitor agent is as follows:
PAA (acrylic acid modified resin)-75.3%;
HPMA (hydrolytic polymaleic anhydride)-74.2%;
T225 (acrylic acid-acrylic acid hydroxypropyl fat, Castanea crenata field company produces)-77.6%;
PASP (poly aspartic acid)-73.8%.
In the water of high rigidity (total hardness >=700mg/L), scale inhibition performance is still lower.And GEOTHERMAL WATER due to temperature higher, thus the solubleness of dirt is high, general total hardness >=1000mg/L, belongs to ultrahigh hardness water, even for ultrahard water.
Summary of the invention
For prior art Problems existing, the object of this invention is to provide a kind of vinylformic acid/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors and preparation method thereof, this Scale inhibitors has good scale inhibition effect to high rigidity GEOTHERMAL WATER.Meanwhile, its preparation method technique is simple, with low cost.
For achieving the above object, vinylformic acid of the present invention/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors, wherein each component is counted according to weight percent:
Vinylformic acid 50 ~ 70%, polymethylmethacrylate 20 ~ 45%, vinyl cyanide 5 ~ 25%.
Be preferably: each component is counted according to weight percent: vinylformic acid 55 ~ 65%, polymethylmethacrylate 25 ~ 35%, vinyl cyanide 10 ~ 20%.
The preparation method of vinylformic acid of the present invention/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer, comprises the following steps successively:
1) get vinylformic acid, polymethylmethacrylate, vinyl cyanide according to design proportion, mix in mixer;
2) by the material that mixes through twin screw extruder eight district melting mixing extruding pelletization, wherein, the temperature in each district of twin screw extruder control be:
1st district is 180 ~ 225 DEG C, and 2nd district are 185 ~ 230 DEG C, and 3rd district are 185 ~ 230 DEG C, and 4th district are 185 ~ 230 DEG C, 5th district are 185 ~ 230 DEG C, and 6th district are 185 ~ 230 DEG C, and 7th district are 185 ~ 230 DEG C, 8th district are 185 ~ 225 DEG C, and head temperature is 185 ~ 225 DEG C, and melt temperature controls at 185 ~ 230 DEG C.Controlled by above-mentioned eight district's temperature, preheating section can be reached and be vented completely, react the disconnected sufficient effect of copolymerization.
Preferably, step 1) in, in described mixing process, the speed of mixer is 1200 ~ 1500rpm, mixing 5 ~ 10min.
Vinylformic acid of the present invention/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer Scale inhibitors mechanism and the high reason of scale inhibition performance are:
This Scale inhibitors can form stable soluble chelating thing with part calcium ion generation sequestering action in the aqueous solution, decreases Ca
2+with CO
3 2-in conjunction with chance, thus reach scale inhibition (dirt and CaCO
3throw out) effect outside, simultaneously can also with the calcium ion generation sequestering action on calcium carbonate crystal interface, dirty crystal is being less than under its critical nucleus size once after being formed, its further growth retardation, the size of critical nucleus can not be reached more than, again dissipate because not growing thereupon, also reach scale effect.Therefore, vinylformic acid of the present invention/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer Scale inhibitors has two strong effects simultaneously: can with the positively charged ion chelating in water, can be combined and prevent the further growth of dirt by positively charged ion in dirty crystal again, so scale prevention ability improves, the water of more high rigidity can be applicable to.
Embodiment
Below in conjunction with specific embodiment, vinylformic acid of the present invention/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors and preparation method thereof is described in further detail.
Vinylformic acid/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors the component of various embodiments of the present invention is as shown in table 1.
The preparation method of the vinylformic acid/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer of above-described embodiment, comprises the following steps successively:
1) get vinylformic acid according to design proportion, polymethylmethacrylate, vinyl cyanide, mix in mixing machine, during mixing, the speed of mixer is 1200 ~ 1500rpm, mixing 5 ~ 10min.；
2) by the material that mixes through twin screw extruder eight district melting mixing extruding pelletization, wherein the temperature of twin screw extruder control be:
1st district is 180 ~ 225 DEG C, and 2nd district are 185 ~ 230 DEG C, and 3rd district are 185 ~ 230 DEG C, and 4th district are 185 ~ 230 DEG C, 5th district are 185 ~ 230 DEG C, and 6th district are 185 ~ 230 DEG C, and 7th district are 185 ~ 230 DEG C, 8th district are 185 ~ 225 DEG C, and head temperature is 185 ~ 225 DEG C, and melt temperature controls at 185 ~ 230 DEG C.
Detect the static-state scale inhibition rate of the present embodiment products obtained therefrom in the water of high rigidity (total hardness >=700mg/L), its result is as shown in table 1.
Table 1
| Vinylformic acid | Polymethylmethacrylate | Vinyl cyanide | Static-state scale inhibition rate | |
| Embodiment 1 | 50 | 40 | 10 | 83.1％ |
| Embodiment 2 | 60 | 35 | 5 | 85.6％ |
| Embodiment 3 | 70 | 22 | 8 | 82.5％ |
| Embodiment 4 | 55 | 35 | 10 | 86.4％ |
| Embodiment 5 | 60 | 25 | 15 | 87.7％ |
| Embodiment 6 | 62 | 30 | 8 | 85.5％ |
| Embodiment 7 | 58 | 28 | 14 | 86.8％ |
Table 1 detected result is visible, and the static-state scale inhibition rate of vinylformic acid of the present invention/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer, all more than 80%, particularly has excellent scale inhibition effect to high hardness water.
Claims (4)
1. vinylformic acid/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors, is characterized in that: in this Scale inhibitors, each component is counted according to weight percent:
Vinylformic acid 50 ~ 70%, polymethylmethacrylate 20 ~ 45%, vinyl cyanide 5 ~ 25%.
2. vinylformic acid according to claim 1/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer water Scale inhibitors, it is characterized in that: in this Scale inhibitors, each component is counted according to weight percent: vinylformic acid 55 ~ 65%, polymethylmethacrylate 25 ~ 35%, vinyl cyanide 10 ~ 20%.
3. a preparation method for vinylformic acid described in claim 1/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer, comprises the following steps successively:
1) get vinylformic acid, polymethylmethacrylate, vinyl cyanide according to design proportion, mix in mixer;
2) by the material that mixes through twin screw extruder eight district melting mixing extruding pelletization, wherein, the temperature in each district of twin screw extruder control be:
1st district is 180 ~ 225 DEG C, and 2nd district are 185 ~ 230 DEG C, and 3rd district are 185 ~ 230 DEG C, and 4th district are 185 ~ 230 DEG C, 5th district are 185 ~ 230 DEG C, and 6th district are 185 ~ 230 DEG C, and 7th district are 185 ~ 230 DEG C, 8th district are 185 ~ 225 DEG C, and head temperature is 185 ~ 225 DEG C, and melt temperature controls at 185 ~ 230 DEG C.
4. the preparation method of vinylformic acid/polymethylmethacryla/e /e acrylonitrile lonitrile copolymer according to claim 3, is characterized in that: step 1) in, during described mixing, the speed of mixer is 1200 ~ 1500rpm, mixing 5 ~ 10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899995.4A CN105504176A (en) | 2015-12-07 | 2015-12-07 | Acrylic acid/polymethyl methacrylate/acrylonitrile copolymer water antisludging agent and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510899995.4A CN105504176A (en) | 2015-12-07 | 2015-12-07 | Acrylic acid/polymethyl methacrylate/acrylonitrile copolymer water antisludging agent and preparing method thereof |
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| CN105504176A true CN105504176A (en) | 2016-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612015A (en) * | 2022-12-19 | 2023-01-17 | 山东泰和科技股份有限公司 | Water-soluble comprehensive scale inhibitor, preparation method thereof and application thereof in water treatment |
Citations (3)
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|---|---|---|---|---|
| CN1396841A (en) * | 2000-01-27 | 2003-02-12 | 西巴特殊化学水处理有限公司 | Particulate compositions and their manufacture method |
| CN1796309A (en) * | 2004-12-30 | 2006-07-05 | 中国石化北京燕化石油化工股份有限公司 | Composite agent for anti water incrustation in use for reverse osmosis system and application |
| CN103589067A (en) * | 2013-11-15 | 2014-02-19 | 天津工业大学 | Nano composite plastic with scale inhibition effect and preparation method thereof |
-
2015
- 2015-12-07 CN CN201510899995.4A patent/CN105504176A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396841A (en) * | 2000-01-27 | 2003-02-12 | 西巴特殊化学水处理有限公司 | Particulate compositions and their manufacture method |
| CN1796309A (en) * | 2004-12-30 | 2006-07-05 | 中国石化北京燕化石油化工股份有限公司 | Composite agent for anti water incrustation in use for reverse osmosis system and application |
| CN103589067A (en) * | 2013-11-15 | 2014-02-19 | 天津工业大学 | Nano composite plastic with scale inhibition effect and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| E.R.布劳脱等编著，李斌才等译: "《单体》", 31 May 1959, 科学出版社 * |
| 张玉龙等: "《水处理剂配方设计与实例》", 31 May 2011, 中国纺织出版社 * |
| 窝尔梯彻著，刘敬琨等译: "《丙烯腈》", 31 July 1958, 科学出版社 * |
| 郑艳芬等: "环保型阻垢剂的研究进展", 《中国环境管理干部学院学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612015A (en) * | 2022-12-19 | 2023-01-17 | 山东泰和科技股份有限公司 | Water-soluble comprehensive scale inhibitor, preparation method thereof and application thereof in water treatment |
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Application publication date: 20160420 |