CN105986520A - Mixed filler added filter paper for hydraulic filter - Google Patents
Mixed filler added filter paper for hydraulic filter Download PDFInfo
- Publication number
- CN105986520A CN105986520A CN201610062255.XA CN201610062255A CN105986520A CN 105986520 A CN105986520 A CN 105986520A CN 201610062255 A CN201610062255 A CN 201610062255A CN 105986520 A CN105986520 A CN 105986520A
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- parts
- solid content
- distilled water
- filter paper
- powder
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses mixed filler added filter paper for a hydraulic filter. The filter paper is prepared from, by weight, 50-55 parts of 3-5mm alkali-free superfine glass fibers, 55-60 parts of bleached softwood pulp, appropriate amount of distilled water, 0.8-1 part of anionic polyacrylamide, appropriate amount of concentrated sulfuric acid being 98wt% in concentration, 10-12 parts of nano titania, 20-25 parts of ferroferric oxide colloidal solution with solid content being 30%, appropriate amount of absolute ethyl alcohol, 60-65 parts of fluorosilicone emulsion with solid content being 40wt%, 0.8-1 part of PAE wet strength agent, 7-8 parts of white carbon black, 3-4 parts of mica powder, 2-3 parts of nano bamboo charcoal powder, 2-3 parts of PVC (polyvinyl chloride) resin powder and 2-3 parts of stearic acid emulsion. The filter paper with delicate and porous surface is high in air permeability and excellent in both strength and toughness and has favorable high temperature resistance and corrosion resistance effects.
Description
Technical field
The present invention relates to filter paper technical field, particularly relate to a kind of hydraulic filter filter paper adding mixed fillers.
Background technology
Nowadays Chinese society is developing rapidly, and enterprise can select mechanically actuated mode in work progress mostly.Constantly perfect with science and technology, in terms of mechanically actuated, enterprise has applied the form of construction work of electromechanical integration all.During mechanical use, no matter how careful operator is to installation and the operation of equipment, all being not fee from the pollution causing hydraulic oil in various degree, the maintenance of hydraulic oil will take for substantial amounts of time and expense, and therefore hydraulic oil becomes of paramount importance parts during machinery uses.Machinery is in use, mainly operated by the through miscellaneous part of hydraulic oil, owing to moisture, gas inclusions dust are mixed in hydraulic oil, to cause hydraulic oil produces oxidation, cause the formation of foam, incrustation and greasy filth, directly affect the using effect of machinery, also result in sizable infringement to machinery simultaneously, hydraulic oil filtration system can reduce the incidence of this phenomenon, avoid that the phenomenon that hydraulic oil is contaminated in use occurs as far as possible, it can be seen that the filtration system of hydraulic oil directly affects the service life of machinery.
A kind of water-base resin with excellent hydrophobic oleophilic oil performance prepared in the preparation of the hydrophobic oleophilic oil organo-mineral complexing emulsion " and in the application study of oil-water separation filter paper " literary composition, prepare efficient water-oil separating resin by the method for organo-mineral complexing and be applied to filter paper impregnation, give filter paper with efficient water-oil separating performance simultaneously, substantially increase filter paper strength character and service life.Filtration filter paper is after complex emulsions dipping, and its surface presents double micro-rough structure, gives filter paper super-hydrophobic/super-oleophilic performance, and water-oil separating rate can be up to 99.6wt%.But the filter paper used herein is ordinary filter paper, not there is good heat resistant, corrosion resistance, and filter paper can be destroyed and be caused filtration inefficiencies under stress for a long time, so can directly promote and produce into, a kind of filter core filter paper that can be convenient for changing should be developed, certain pressure can not only be resisted, possesses good intensity, can use in high-temperature oil liquid, and can be good at moisture present in filtered fluid force feed and the mechanical admixture particle etc. in system, simultaneously cost-effective.
Content of the invention
The object of the invention is contemplated to make up the defect of prior art, provides a kind of hydraulic filter filter paper adding mixed fillers.
The present invention is achieved by the following technical solutions:
A kind of hydraulic filter filter paper adding mixed fillers, it is made up of the raw material of following weight portion: 3-5 millimeter superfine E-glass fibre glass fibre 50-55, bleaching needle-point leaf pulp 55-60, distilled water is appropriate, PAMA 0.8-1, concentration is that the concentrated sulfuric acid of 98wt% is appropriate, nano titanium oxide 10-12, solid content is the ferroferric oxide gel solution 20-25 of 30%, absolute ethyl alcohol is appropriate, the fluoro-silicone emulsion 60-65 of solid content 40wt%, PAE wet strength agent 0.8-1, white carbon 7-8, mica powder 3-4, nano bamboo carbon powder 2-3, PVC resin powder 2-3, stearic acid late 2-3.
Described a kind of hydraulic filter filter paper adding mixed fillers, is made up of step in detail below:
(1) distilled water adding 8-10 appropriate in 3-5 millimeter superfine E-glass fibre glass fibre being made suspension, the concentrated sulfuric acid adding appropriate concentration to be 98wt%, regulation pH is 3.5, and the formation suspension that stirs is stand-by；Bleaching needle-point leaf pulp is put into hydrabrusher size degradation, then through beater stirring, control beating degree at 40-45 ° of SR, then mixes with above-mentioned glass suspension, adds PAMA, continues stirring, form uniform pulp suspension；
(2) by the distilled water adding 10-12 times amount in nano titanium oxide, stirring is to being completely dispersed, heating water bath, to 60-65 DEG C, is slowly added to the ferroferric oxide gel solution that solid content is 30%, after being added dropwise to complete, with the speed stirring 120-150 minute of 350-400 rev/min, it is then centrifuged for separating, use distilled water, absolute ethanol washing 2 times respectively, be finally putting in vacuum drying chamber with 70-80 DEG C of drying, take out after cooling, grind and prepare magnetic powder；
(3) white carbon, mica powder mixing are put in ball mill, dry grinding 30-40 minute, it is subsequently adding the distilled water of 3-4 times amount, continue ball milling 60-90 minute, mix with stearic acid late, PVC resin powder after discharging, send in homogenizer, with the speed stirring 30-40 minute of 1200-1500 rev/min, then mixed slurry is crossed leaching filter cake, filter cake is placed on the temperature drying of 90-100 DEG C, obtains mixed fillers；
(4) pulp suspension obtaining step (1) mixes with the magnetic powder that step (2) obtains, add remaining residual components in addition to the fluoro-silicone emulsion of solid content 40wt%, it is heated to 50-60 DEG C, be stirring evenly and then adding into appropriate distilled water size mixing to solid content be 2-3%, again shaped for the slurry mixing up net is shaped, under the vacuum condition of 0.06-0.08Mpa, suction dehydration is carried out to the l Water Paper after shaping；
(5) fluoro-silicone emulsion of solid content 40wt% is mixed with the mixed fillers that step (3) obtains, the distilled water adding total amount 2-3 times amount is diluted obtaining maceration extract, the l Water Paper that step (4) obtains is passed through dipping tank with the speed of 3-3.5m/s, make maceration extract be uniformly coated on l Water Paper, be then placed in the temperature drying with 150-160 DEG C in electric drying oven with forced convection.
The invention have the advantage that glass fibre is mixed with softwood pulp by the present invention by after acid modification, the intensity of reinforcing glass fiber while keeping glass fibre to be uniformly dispersed good, reduce the fragility of glass fibre, take into account intensity index and the strainability of product, there is good high temperature resistant, corrosion resistance simultaneously；The present invention also with the addition of the modified ferroso-ferric oxide of nanometer titanium dioxide-coated in preparation, not only possesses good magnetic, make the filter paper can the mechanical admixture such as metal filings that preferably adsorption filtration is fallen in hydraulic system, and improve the whiteness of magnetic powder, it is more suitable for being added in the preparation of filter paper；Finally with fluoro-silicone emulsion, raw paper of filter paper is impregnated, after dipping, latex particle is dispersed in fiber page hole and fiber surface, after drying film forming, can be evenly coated on fiber surface and intertwined point, and unplugged fiber holes gap, make filter paper remain in that abundant space, there is excellent oil-water separation, improve the performances such as the deflection of filter paper, bursting strength, tensile strength simultaneously.
The present invention adds the powder that white carbon, mica powder etc. have high oil factor, by coating modifications such as stearic acid lates, further increase the hydrophobic oil factor of mixed powder, mixed powder is evenly distributed in filter paper, the fine and smooth porous of its surface made, gas permeability is good, has strength and toughness concurrently, has good effect high temperature resistant, corrosion resistant simultaneously.
Detailed description of the invention
A kind of hydraulic filter filter paper adding mixed fillers, is made up of the raw material of following weight portion (kilogram): 3-5 millimeter superfine E-glass fibre glass fibre the 50th, bleaching needle-point leaf pulp the 55th, distilled water is appropriate, PAMA the 0.8th, concentration is that the concentrated sulfuric acid of 98wt% is appropriate, nano titanium oxide the 10th, solid content be 30% ferroferric oxide gel solution the 20th, absolute ethyl alcohol is appropriate, fluoro-silicone emulsion the 60th, PAE wet strength agent the 0.8th, white carbon the 7th, mica powder the 3rd, nano bamboo carbon powder the 2nd, PVC resin powder the 2nd, stearic acid late 2 of solid content 40wt%.
Described a kind of hydraulic filter filter paper adding mixed fillers, is made up of step in detail below:
(1) 8 appropriate distilled water will be added in 3-5 millimeter superfine E-glass fibre glass fibre to make suspension, the concentrated sulfuric acid adding appropriate concentration to be 98wt%, regulation pH is 3.5, and the formation suspension that stirs is stand-by；Bleaching needle-point leaf pulp is put into hydrabrusher size degradation, then through beater stirring, control beating degree at 40 ° of SR, then mixes with above-mentioned glass suspension, adds PAMA, continues stirring, form uniform pulp suspension；
(2) by the distilled water adding 10 times amount in nano titanium oxide, stirring is to being completely dispersed, heating water bath, to 60 DEG C, is slowly added to the ferroferric oxide gel solution that solid content is 30%, after being added dropwise to complete, stir 120 minutes with the speed of 350 revs/min, it is then centrifuged for separating, use distilled water, absolute ethanol washing 2 times respectively, be finally putting in vacuum drying chamber with 70 DEG C of dryings, take out after cooling, grind and prepare magnetic powder；
(3) white carbon, mica powder mixing are put in ball mill, dry grind 30 minutes, it is subsequently adding the distilled water of 3 times amount, continue ball milling 60 minutes, mix with stearic acid late, PVC resin powder after discharging, send in homogenizer, stir 30 minutes with the speed of 1200 revs/min, then mixed slurry is crossed leaching filter cake, filter cake is placed on the temperature drying of 90 DEG C, obtains mixed fillers；
(4) pulp suspension obtaining step (1) mixes with the magnetic powder that step (2) obtains, add remaining residual components in addition to the fluoro-silicone emulsion of solid content 40wt%, it is heated to 50 DEG C, be stirring evenly and then adding into appropriate distilled water size mixing to solid content be 2%, again shaped for the slurry mixing up net is shaped, under the vacuum condition of 0.06Mpa, suction dehydration is carried out to the l Water Paper after shaping；
(5) fluoro-silicone emulsion of solid content 40wt% is mixed with the mixed fillers that step (3) obtains, the distilled water adding total amount 2 times amount is diluted obtaining maceration extract, the l Water Paper that step (4) obtains is passed through dipping tank with the speed of 3m/s, make maceration extract be uniformly coated on l Water Paper, be then placed in the temperature drying with 150 DEG C in electric drying oven with forced convection.
After testing, the air permeability of the filter paper that the present invention prepares is 40.9s 100mL-1
, tensile index is 23.8N m g-1, burst index is 2.35kPa m2•g-1。
Claims (2)
1. the hydraulic filter filter paper adding mixed fillers, it is characterized in that, it is made up of the raw material of following weight portion: 3-5 millimeter superfine E-glass fibre glass fibre 50-55, bleaching needle-point leaf pulp 55-60, distilled water is appropriate, PAMA 0.8-1, concentration is that the concentrated sulfuric acid of 98wt% is appropriate, nano titanium oxide 10-12, solid content is the ferroferric oxide gel solution 20-25 of 30%, absolute ethyl alcohol is appropriate, the fluoro-silicone emulsion 60-65 of solid content 40wt%, PAE wet strength agent 0.8-1, white carbon 7-8, mica powder 3-4, nano bamboo carbon powder 2-3, PVC resin powder 2-3, stearic acid late 2-3.
2. a kind of hydraulic filter filter paper adding mixed fillers according to claim 1, it is characterised in that be made up of step in detail below:
(1) distilled water adding 8-10 appropriate in 3-5 millimeter superfine E-glass fibre glass fibre being made suspension, the concentrated sulfuric acid adding appropriate concentration to be 98wt%, regulation pH is 3.5, and the formation suspension that stirs is stand-by；Bleaching needle-point leaf pulp is put into hydrabrusher size degradation, then through beater stirring, control beating degree at 40-45 ° of SR, then mixes with above-mentioned glass suspension, adds PAMA, continues stirring, form uniform pulp suspension；
(2) by the distilled water adding 10-12 times amount in nano titanium oxide, stirring is to being completely dispersed, heating water bath, to 60-65 DEG C, is slowly added to the ferroferric oxide gel solution that solid content is 30%, after being added dropwise to complete, with the speed stirring 120-150 minute of 350-400 rev/min, it is then centrifuged for separating, use distilled water, absolute ethanol washing 2 times respectively, be finally putting in vacuum drying chamber with 70-80 DEG C of drying, take out after cooling, grind and prepare magnetic powder；
(3) white carbon, mica powder mixing are put in ball mill, dry grinding 30-40 minute, it is subsequently adding the distilled water of 3-4 times amount, continue ball milling 60-90 minute, mix with stearic acid late, PVC resin powder after discharging, send in homogenizer, with the speed stirring 30-40 minute of 1200-1500 rev/min, then mixed slurry is crossed leaching filter cake, filter cake is placed on the temperature drying of 90-100 DEG C, obtains mixed fillers；
(4) pulp suspension obtaining step (1) mixes with the magnetic powder that step (2) obtains, add remaining residual components in addition to the fluoro-silicone emulsion of solid content 40wt%, it is heated to 50-60 DEG C, be stirring evenly and then adding into appropriate distilled water size mixing to solid content be 2-3%, again shaped for the slurry mixing up net is shaped, under the vacuum condition of 0.06-0.08Mpa, suction dehydration is carried out to the l Water Paper after shaping；
(5) fluoro-silicone emulsion of solid content 40wt% is mixed with the mixed fillers that step (3) obtains, the distilled water adding total amount 2-3 times amount is diluted obtaining maceration extract, the l Water Paper that step (4) obtains is passed through dipping tank with the speed of 3-3.5m/s, make maceration extract be uniformly coated on l Water Paper, be then placed in the temperature drying with 150-160 DEG C in electric drying oven with forced convection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062255.XA CN105986520A (en) | 2016-01-29 | 2016-01-29 | Mixed filler added filter paper for hydraulic filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062255.XA CN105986520A (en) | 2016-01-29 | 2016-01-29 | Mixed filler added filter paper for hydraulic filter |
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| CN105986520A true CN105986520A (en) | 2016-10-05 |
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| CN201610062255.XA Pending CN105986520A (en) | 2016-01-29 | 2016-01-29 | Mixed filler added filter paper for hydraulic filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797207A (en) * | 2018-05-15 | 2018-11-13 | 仙鹤股份有限公司 | A kind of high-strength hot transfer body paper and its production method |
| CN110150577A (en) * | 2019-05-17 | 2019-08-23 | 上海淳萃食品有限公司 | A kind of preparation method and application for dripping chickens' extract |
| CN114994315A (en) * | 2022-05-24 | 2022-09-02 | 山东博科快速检测技术有限公司 | New crown colloidal gold antibody detection test strip and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3849309A (en) * | 1971-12-13 | 1974-11-19 | W Morris | Food fryer with continuously filtered cooking oil |
| CN101172206A (en) * | 2006-11-01 | 2008-05-07 | 王金夫 | oil filter paper |
| CN102877376A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | Acetate fiber paper |
| CN102877372A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | High temperature-resisting filter paper for automobile filter |
| CN103981768A (en) * | 2014-03-31 | 2014-08-13 | 蚌埠凤凰滤清器有限责任公司 | Composite engine oil filter paper using waste density boards as raw material, and making method thereof |
-
2016
- 2016-01-29 CN CN201610062255.XA patent/CN105986520A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3849309A (en) * | 1971-12-13 | 1974-11-19 | W Morris | Food fryer with continuously filtered cooking oil |
| CN101172206A (en) * | 2006-11-01 | 2008-05-07 | 王金夫 | oil filter paper |
| CN102877376A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | Acetate fiber paper |
| CN102877372A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | High temperature-resisting filter paper for automobile filter |
| CN103981768A (en) * | 2014-03-31 | 2014-08-13 | 蚌埠凤凰滤清器有限责任公司 | Composite engine oil filter paper using waste density boards as raw material, and making method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘仁庆: "《纸张指南》", 31 October 1997, 北京：科学普及出版社 * |
| 张洪鑫: "纳米磁性Fe3O4/TiO2复合体制备及在磁性纸中的应用", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 徐桂龙: "疏水亲油有机无机复合乳液的制备及其在油水分离滤纸的应用研究", 《中国博士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797207A (en) * | 2018-05-15 | 2018-11-13 | 仙鹤股份有限公司 | A kind of high-strength hot transfer body paper and its production method |
| CN110150577A (en) * | 2019-05-17 | 2019-08-23 | 上海淳萃食品有限公司 | A kind of preparation method and application for dripping chickens' extract |
| CN114994315A (en) * | 2022-05-24 | 2022-09-02 | 山东博科快速检测技术有限公司 | New crown colloidal gold antibody detection test strip and preparation method thereof |
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Application publication date: 20161005 |