CN1296025A - Method for making high molecular millipore filter material - Google Patents
Method for making high molecular millipore filter material Download PDFInfo
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- CN1296025A CN1296025A CN 99117368 CN99117368A CN1296025A CN 1296025 A CN1296025 A CN 1296025A CN 99117368 CN99117368 CN 99117368 CN 99117368 A CN99117368 A CN 99117368A CN 1296025 A CN1296025 A CN 1296025A
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Abstract
The production method of macromolecular microporous filter material is characterized by that the polyvinyl alcohol and linear phenolic resin aqueous solution are added to the pore adjuvant starch solution, and the acid-aldehyde mixture is utilized to make acetalization reaction and solidification reaction, and the above-mentioned materials are compounded, and made into the polyvinyl acetal and phenolic resin microporous filter material. It not only possesses the characteristics of polyvinyl acetal system microporous filter material, but also changes the main body structure property of microporous filter material, and its water-proof property is good, mechanical strength is high, precision is higher, it can be used for a long period, does not deform and does not leak, and its cost is low.
Description
The present invention relates to a kind of manufacture method of high molecular millipore filter material, more particularly, the present invention relates to the method for the compound manufacturing micropore filter material of polyvinyl acetal and phenolic resin.Belong to macromolecular material and make the field.
The special public clear 52-18743 of Japanese Patent discloses the manufacture method of polyvinyl acetal system porous material, at first adds the blowhole auxiliary agent in polyvinyl alcohol (PVA) aqueous solution, the reaction mass of sour aldehyde mixture-make.The industrial method of generally using is: beginning water dissolving PVA, can heat in case of necessity, make concentration and be 5～15% the PVA aqueous solution, then the pore auxiliary agent is added wherein, add-on is 20～25% of PVA, and mix, add the PVA amount 0.5～1% (mol ratio) aldehyde and to 2～10% acid mixture material of above-mentioned each inventory.Polyvinyl acetal micropore filter material by the production of this kind method.Wetting ability is very strong, meets the water after, feels like jelly.It takes the acid and the aldehyde of high density 8% in order to eliminate the hydrophilic shortcoming of PVA, has reached the purpose that improves acetalation, and the intensity and the water tolerance of the micropore filter material of polyvinyl acetal system are greatly improved; But do not consider that the polyvinyl acetal thing produces decomposition again under the effect of acid, and reduce this important phenomenon of degree of acetalization.Therefore, the raising of the degree of acetalization of product is restricted.The method that this patent adopts resin solution to invade stain again improves its physical strength and water tolerance, but still is not solved at all.Poromerics is a kind of loose material, resin is coated on the surface of loose material, at first reduces void content, forms partly aperture obstruction; Next is that resin in use easily comes off; Be not coated onto and feel like jelly, expand after part is met water, accelerate coming off of resin and cause physical strength to descend, make shortcomings such as filter material leaks, the life-span is short.
The objective of the invention is to provide a kind of manufacture method of high molecular millipore filter material at the deficiencies in the prior art, be characterized in polyvinyl alcohol and the compound manufacturing micropore filter material of resol, it not only has the characteristics of polyvinyl acetal system micropore filter material, and changed the performance of micropore filter material agent structure, improved the mechanical property and the water tolerance of micropore filter material greatly.
Purpose of the present invention realizes that by following technical measures wherein said raw material is parts by weight except that specified otherwise.
With 80～100 parts of polyvinyl alcohol, linear phenolic resin 25～150 minutes, 50～100 parts of starch, 10～15 parts of hexamethylenetetramines, be dissolved in 800～1000 parts respectively in water, add successively and have agitator, in the reactor of reflux exchanger and thermometer, with acid for adjusting pH value is 2～3, under agitation be warming up to 95～110 ℃, treat to be cooled to 40～45 after solution mixes, add 50～100 parts of vitriol oil acid, 50～150 parts of formaldehyde or butyraldehyde, it is even to continue dispersed with stirring, mixing solutions is injected garden tube mould or folding die, the mould that will fill mixing solutions again moves in the hot water tank, is warming up to 70～95 ℃, aldolization 3～5 hours, take out solids in the mould, insert 1～8 part of hexamethylenetetramine, 5～12 parts in sulfuric acid, 5～15 parts of formaldehyde or butyraldehyde, in the mixing solutions that water is 75～95 parts, in 80～85 ℃ of temperature, curing reaction 3～8 hours takes out solids and cleans with flowing water, insert again in 1～2 part of solution of sodium hydroxide and soaked 2～3 hours, remove residual starch in the solids, use running water wash lixiviating liquid again, be warming up to 110 ℃～120 ℃ after inserting the loft drier inner drying, kept 0.5～2 hour, and obtained the micropore filter material product.
Product of the present invention and polyvinyl acetal porous insert performance relatively see table 1 for details.
Product of the present invention and Japanese Patent product relatively have following advantage:
1. manufacture method is simple, and is with short production cycle, and cost is low.
2. product water-tolerant of the present invention, physical strength height, life-time service are indeformable, do not leak, and greatly increase work-ing life.
3. under brute force stirred, the pore auxiliary agent disperseed, good penetrability, made the micropore of micropore filter material trickleer, precision is higher, blind hole is few, thereby had enlarged use range, and remarkable economic efficiency and social benefit are arranged.
Embodiment
Below by embodiment the present invention is carried out concrete description; be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to the invention described above content.
1. with polyvinyl alcohol 16～88 50 grams, wheat starch 30 grams, linear phenolic resin 50 grams, hexamethylenetetramine 7.5 grams, be dissolved in respectively in the 400 gram water, regulate pH=2～3 with sulfuric acid, add and have agitator, in the reactor of reflux exchanger and thermometer, under agitation be warming up to 100 ℃, mixing speed is 200rpm, mixture is uniformly dispersed, stirring is decelerated to 120rpm and is cooled to 40 ℃, add 40% formalin, 40 grams, 98% sulfuric acid, 15 grams, stir evenly in the garden cylindrical mould that injects required size in the back, the stainless steel of mould, garden tube internal diameter 70mm, high 250mm, a middle upright diameter is the solid stainless steel bar of 30mm, the mould that fills mixed solution is moved in the hot water tank, be warming up to 70 ℃, by per hour heating up 10 ℃ speed to 95 ℃, behind the observing response thing solid state, take out solids and place formaldehyde, (water: formaldehyde: sulfuric acid: hexamethylenetetramine=84: 10: 5: 1) in the mixing solutions that sulfuric acid and six methynes four are pressed, in 80～85 ℃ of reactions of temperature 4～5 hours, take out solids and clean with flowing water, insert again and soaked in 1～2% sodium hydroxide solution 2～3 hours, remove residual starch in the solids, use running water wash lixiviating liquid again, inserting heats up 110 ℃ behind the loft drier inner drying kept 1 hour, obtained the micropore filter material product.Its interior diameter is 30mm, external diameter 50mm, and the garden tube product of long 200mm, its mean accuracy is 1 μ m, at 1kg/cm
2Under the pressure, filtering the tap water flow is 1000kg/hr, and relatively ceramic with the sintered type of same precision, the ceramic rod flow is 200kg/hr.
2. with polyvinyl alcohol 17～99 50 grams, yam starch 70 restrains, linear phenolic resin 25 grams, hexamethylenetetramine 4 grams, sulfuric acid 10 grams, butyraldehyde 50 grams, water 550 grams, technological operation according to embodiment 1 makes the micropore filter material product, and its mean accuracy is 5 μ m, at 1kg/cm
2Under the pressure, filtering the tap water flow is 1500kg/hr.
3. polyvinyl alcohol 17～88 and polyvinyl alcohol 17～99 are respectively got 25 grams, W-Gum 50 grams, linear phenolic resin 10 grams, water 400 grams, sulfuric acid 20 grams, formaldehyde 40 grams, hexamethylenetetramine 2 grams are pressed the method for embodiment 1 and are made mixed solution.Mixed solution is injected square (stainless steel) mould, the mould length and width respectively are 150mm, high 100mm again.The mould that will fill mixed solution then moves in the hot water tank, and in 75 ℃ of temperature, acetalation 3 hours is taken out solids, presses the aftertreatment technology operation of embodiment 1, obtains the micropore filter material product, and its mean accuracy is 0.5 μ m, at 1kg/cm
2Under the pressure, filtering the tap water flow is 600kg/hr.
Table 1 for the Performance Ratio of product of the present invention and Pioloform, polyvinyl acetal porous body
Claims (1)
- A kind of manufacture method of high molecular millipore filter material, it is characterized in that 80～100 parts of polyvinyl alcohol, 25～150 parts of linear phenolic resins, 50～100 parts of starch, hexamethylenetetramine is dissolved in respectively in 800～1000 parts of water for 10～15 parts, add successively and have agitator, in the reactor of reflux exchanger and thermometer, with acid for adjusting pH value is 2～3, under agitation be warming up to 95～110 ℃, treat to be cooled to 40～45 ℃ after solution mixes, add 50～100 parts of the vitriol oils, 50～150 parts of formaldehyde or butyraldehyde, it is even to continue dispersed with stirring, mixing solutions is injected garden tube mould or folding die, the mould that will fill mixing solutions again moves in the hot water tank, be warming up to 70～95 ℃, aldolization 3～5 hours, take out the solids in the mould, insert 1～8 part of hexamethylenetetramine, 5～12 parts in sulfuric acid, 5～15 parts of formaldehyde or butyraldehyde, in the mixing solutions that water is 75～90 parts, in 80～85 ℃ of temperature, curing reaction 3～8 hours takes out solids and cleans with flowing water, insert again in 1～2 part of solution of sodium hydroxide and soaked 2～3 hours, remove residual starch in the solids, use running water wash lixiviating liquid again, be warming up to 110 ℃～120 ℃ after inserting the loft drier inner drying, kept 0.5～2 hour, and obtained the micropore filter material product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117368A CN1098889C (en) | 1999-11-15 | 1999-11-15 | Method for making high molecular millipore filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117368A CN1098889C (en) | 1999-11-15 | 1999-11-15 | Method for making high molecular millipore filter material |
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| Publication Number | Publication Date |
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| CN1296025A true CN1296025A (en) | 2001-05-23 |
| CN1098889C CN1098889C (en) | 2003-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN99117368A Expired - Fee Related CN1098889C (en) | 1999-11-15 | 1999-11-15 | Method for making high molecular millipore filter material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011076222A1 (en) | 2009-12-21 | 2011-06-30 | Oü Bioconsult | Filter material for separation of hydrophilic substances from various hydrophobic liquids or gases and method for preparation of the material |
| CN106178992A (en) * | 2016-08-23 | 2016-12-07 | 李凤荣 | A kind of preparation method of macromolecular filter membrane |
| CN108031310A (en) * | 2017-12-13 | 2018-05-15 | 四川银趣环保科技有限公司 | A kind of preparation method of the filtering net film based on graphene and high molecular material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101422669B (en) * | 2008-11-26 | 2012-02-08 | 南昌大学 | Preparation method of hydrophilicity macromolecule micropore filter material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036636C (en) * | 1993-12-31 | 1997-12-10 | 高宝芳 | Polyethylene-glass fibre porous sintered pipes and their production |
| CN1062485C (en) * | 1996-12-09 | 2001-02-28 | 内蒙古白羽科技实业有限公司 | High molecular filter element and method for producing same |
-
1999
- 1999-11-15 CN CN99117368A patent/CN1098889C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011076222A1 (en) | 2009-12-21 | 2011-06-30 | Oü Bioconsult | Filter material for separation of hydrophilic substances from various hydrophobic liquids or gases and method for preparation of the material |
| CN106178992A (en) * | 2016-08-23 | 2016-12-07 | 李凤荣 | A kind of preparation method of macromolecular filter membrane |
| CN108031310A (en) * | 2017-12-13 | 2018-05-15 | 四川银趣环保科技有限公司 | A kind of preparation method of the filtering net film based on graphene and high molecular material |
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| Publication number | Publication date |
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| CN1098889C (en) | 2003-01-15 |
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