CN105821710A - Hydrophobic filter paper and preparation method thereof - Google Patents
Hydrophobic filter paper and preparation method thereof Download PDFInfo
- Publication number
- CN105821710A CN105821710A CN201610281611.7A CN201610281611A CN105821710A CN 105821710 A CN105821710 A CN 105821710A CN 201610281611 A CN201610281611 A CN 201610281611A CN 105821710 A CN105821710 A CN 105821710A
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- Prior art keywords
- filter paper
- paper
- glass fibre
- glass
- adhesive
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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
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses hydrophobic filter paper. The hydrophobic filter paper is composed of glass fiber and an adhesive. The glass fiber is composed of glass fiber short shreds with the diameter being 5-15 micrometers and glass fiber cotton with the diameter being 2-4 micrometers, and the mass ratio of the glass fiber short shreds to the glass fiber cotton is 1:5-10. The adhesive is hydrophobic modified phenolic resin. The invention further discloses a preparation method of the hydrophobic glass fiber filter paper. The glass fiber short shreds and the glass fiber cotton of the certain mass ratio are pulped, residues are removed, mixed pulp is conveyed to a paper former for forming wet paper, vacuum filtration and water removal are performed, the adhesive is sprayed, and the wet paper is dried to obtain the hydrophobic filter paper. The manufactured filter paper has the advantages of being good in hydrophobic performance, high in strength and filter performance, wide in application range and the like.
Description
Technical field
The present invention relates to a kind of filter paper preparation method, especially relate to a kind of hydrophobicity filter paper preparation method, belong to filtering material field.
Background technology
Along with developing rapidly of science and technology, the continuous emergence of the industry such as electric power, iron and steel, building, create to people more rich, easily and efficiently life while, life and the health of the mankind the most just in environmental pollution in serious threat, the injury of air pollution on human is particularly evident in the recent period, and extensive haze weather is attacked repeatedly.Quality of air environment attention degree is improved constantly by country, and PM2.5 includes in new Air Quality Evaluation system.How to utilize efficient filtering material to reduce harmful gas in air enter human body or effectively filter extremely the most urgent to the harmful gas of discharge.
Filter material paper, generally with Plant fiber, synthetic fibers and inorfil etc. as raw material, adds certain chemical assistant, uses dry or wet paper technology and equipment to manufacture paper with pulp and form.Fiber filter paper has easily processing, cheap, specific surface area big, porous and the feature such as flexibility is good, has become the leading products of air filting material.
Glass fibre has high-strength, corrosion-resistant, oil resistant, hydrophobic high temperature resistant, smooth, good insulating, thermal conductance is low and dimensionally stable is indeformable, improves again it and wear-resisting wait good characteristic after dip coating processes, and it is preferable filtering material.It is compared with linen-cotton, more resistant to high temperature and corrosion-resistant；Compared with chemical fibre, intensity is higher and size is more stable.The most high temperature resistant, missing of ignition, do not burn, natural fiber, chemical fibre are incomparable especially, and therefore, glass fiber filter paper achieves development at full speed.
The production method of blanket of glass wool is broadly divided into two kinds at present, is centrifuging and flame method respectively.Centrifuging glass fiber diameter compared with big, intensity is low, filter effect is bad.Flame method glass cotton is that melten glass is made glass bead, rod or block so that it is again melts, forms once silk, delivering in the flame of combustor ejection under the traction of rubber roll, in cotton collecting chamber, outlet mixes with binding agent, deposits on guipure, finally, solidify through curing oven, make blanket of glass wool.The features such as burner blowing process production scale is little, small investment, occupation of land face are little, meanwhile, the glass fiber diameter using burner blowing process to prepare is little, and flexible big and intensity high, therefore, ultra-fine fibre glass prepared by flame method usually selected by filter paper.
Glass fibre air filter paper is to be that main mixing joins other fiber or silk with glass fibre raw material, uses chemical raw material to give property, utilizes traditional paper technology to manufacture paper with pulp into, porous paper, ground paper or even the cardboard used as filter medium.All-glass paper has high filter efficiency, good chemical stability and relatively low resistance, becomes efficiently and the preferred material of ultra high efficiency air filter, it is adaptable to the application of the air cleaning of every field.
The Chinese patent of Publication No. 103556544A provides one and the invention discloses a kind of high flame retardant glass fibre air filter paper, and described high flame retardant glass fibre air filter paper is cotton by the alkali-free glass fibre of alkali-free glass fibre cotton, a diameter of 0.3～0.4 μm of diameter 7～9 μm and bonding sizing material prepares.The glass fibre air filter paper surfacing of preparation, uniformly, fire resistance is good.But in the bigger area of some humidity, environment, in season, filter course is affected by environment, it is easy to lost efficacy, damage, and affects the service life of filter so that it is application is extremely restricted.
The Chinese patent of Publication No. 202969164U provides a kind of high water repellent filter paper, it is mainly used in solving air filter paper protection against the tide problem, including filter course and waterproof coating, the one side of filter course or two-sided scribble this waterproof coating, waterproof coating has good breathability, cause excessive impact will not to the filtration resistance of filter course, after the program is implemented, both reached waterproof effect, and the property indices of filter course had been affected less, is very suitable in the filtration environment that humidity is required.But this invention is the outside coating waterproof coating at filter course, belongs to hydrophobic aftertreatment technology, and total combines instability, and water resistance is poor.
It is little that the present invention prepares diameter by burner blowing process, and the glass fibre that flexibility is big and intensity is high, as filtering material primary raw material.Manufacture filter paper method by wet method making beating, and in the fabrication process, add modified phenolic resin adhesive and glass fiber filter paper is carried out hydrophobic modified.This invention prepares that glass fiber filter paper hydrophobicity performance is good, intensity is high, strainability is high, filtration resistance is low, length in service life, the feature such as be widely used.
Summary of the invention
It is an object of the invention to: provide a kind of hydrophobicity filter paper and preparation method thereof, this filter paper has that hydrophobicity performance is good, filtration resistance is low and filter efficiency advantages of higher, can be used as the filtration of PM2.5 and the application of the air cleaning of every field.
For solving the problems referred to above, it is provided that a kind of hydrophobicity filter paper, being made up of with adhesive glass fibre, it is characterised in that the uniform random distribution of described glass fibre, form loose structure between fiber, adhesive forms netted joint face on fiber interface point；Described glass fibre is made up of glass fibre cotton and glass chopped silk, and glass chopped silk plays skeletal support effect in filter paper, and glass fibre cotton is then overlapped on alkali-free glass fibre chopped silk and forms loose structure, improves the filter effect of filter paper；Described adhesive is hydrophobic modified phenolic resin, when being sprayed onto fiberglass surfacing, is wrapped in every fiber surface and forms hydrophobicity protective layer, after solidification is dried, make filter paper have excellent hydrophobicity performance.
Described glass chopped filament diameter is 5～15 μm, and glass fibre cotton diameter is between 2～4 μm, and both mass ratioes are 1: 5～10.
Described adhesive formulation includes: phenolic resin is 40～70 parts, and KH550 is 0.1～5 part, and emulsifying methyl-silicone oil is 1～20 part, and ammonium sulfate is 1～8 part, and softening water is 200～900 parts.
The present invention also provides for the preparation method of a kind of hydrophobicity filter paper, it is characterised in that comprise the following steps:
1. slurrying is disperseed: glass chopped silk and the glass fibre cotton raw material of certain mass ratio are added making beating dispersion in beater, obtains slurry；Described beating time is 20～25min, the beating degree after making beating 20 °～80 °；
2. slagging-off processes: be delivered in pond with slurry stir and carry out slagging-off process, the regulation solid content of slurry, viscosity and pH value by slurry, white water solution；The solid content of slurry is 0.2～0.5%, and viscosity is 8cp～11cp, and pH is 4～8；White water solution includes: pure water, fatty acid condensation polymer dispersant and polysiloxane defoaming agent；
3. wet moulding: the mixed slurry stirred is delivered to molding on paper industry molding device and obtains l Water Paper, prepares ground paper after l Water Paper carrying out evacuation eccysis water and squeezing；
4. spray sizing material: being diluted by adhesive, be uniformly sprayed on glass fibre ground paper, unnecessary adhesive siphons away, re-use；
5. dried: the glass fibre ground paper of glue spraying is sent into baking oven and is dried, and to obtain final product, hydrophobized glass fiber filter paper；Described drying temperature 200～300 DEG C, drying time is 5～20min.
The thickness of described hydrophobized glass fiber filter paper is 0.05～2mm, and grammes per square metre is 50～80g/m2, resistance≤350Pa, intensity >=1500N/m, deflection >=1.3mN.m, filter efficiency >=99.7%.
The present invention compared with prior art, has the advantage that
1. burner blowing process prepares the special performances such as glass fiber diameter is little, flexible greatly, pliability is good, pulp freeness is big, gas adsorption rate is high, filtering accuracy is high, cost performance is high, is the preferable base material making filter paper.
2. wet method making beating manufactures filter paper, and in the fabrication process, adds modified phenolic resin adhesive and carry out hydrophobic modified to glass fiber filter paper.
3. the present invention manufactures that ultra-fine fibre glass filter paper hydrophobicity performance is good, intensity is high, strainability is high, length in service life, the feature such as is widely used.
Detailed description of the invention
Below in conjunction with specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention, after having read the present invention, those skilled in the art all fall within the application claims to the amendment of the various equivalent form of values of the present invention and are limited.
Embodiment 1
A kind of hydrophobicity filter paper, is made up of with adhesive glass fibre, it is characterised in that the uniform random distribution of described glass fibre, forms loose structure between fiber, and adhesive forms netted joint face on fiber interface point；Described glass chopped filament diameter is 10 μm, and glass fibre cotton diameter is between 3 μm, and both mass ratioes are 1: 7.Described adhesive is hydrophobic modified phenolic resin, and formula includes: phenolic resin is 40～70 parts, and KH550 is 0.1～5 part, and emulsifying methyl-silicone oil is 1～20 part, and ammonium sulfate is 1～8 part, and softening water is 200～900 parts.
The preparation method of a kind of hydrophobicity filter paper, it is characterised in that comprise the following steps:
1. slurrying is disperseed: glass chopped silk and the glass fibre cotton raw material of certain mass ratio are added making beating dispersion in beater, obtains slurry；Described beating time is 22min, the beating degree after making beating 45 °；
2. slagging-off processes: be delivered in pond with slurry stir and carry out slagging-off process, the regulation solid content of slurry, viscosity and pH value by slurry, white water solution；The solid content of slurry is 0.3%, viscosity be 9cp, pH be 5；White water solution includes: pure water, fatty acid condensation polymer dispersant and polysiloxane defoaming agent；
3. wet moulding: the mixed slurry stirred is delivered to molding on paper industry molding device and obtains l Water Paper, prepares ground paper after l Water Paper carrying out evacuation eccysis water and squeezing；
4. spray sizing material: being diluted by adhesive, be uniformly sprayed on glass fibre ground paper, unnecessary adhesive siphons away, re-use；
5. dried: the glass fibre ground paper of glue spraying is sent into baking oven and is dried, and to obtain final product, hydrophobized glass fiber filter paper；Described drying temperature 250 DEG C, drying time is 10min.
The thickness of described hydrophobicity filter paper is 0.8mm, and grammes per square metre is 60g/m2, resistance 320Pa, intensity 1550N/m, deflection 1.4mN.m, filter efficiency 99.9%.
Above are only the single detailed description of the invention of the present invention, but the design concept of the present invention is not limited thereto, all changes utilizing this design that the present invention carries out unsubstantiality, the behavior invading the scope of protection of the invention all should be belonged to.In every case it is the content without departing from technical solution of the present invention, any type of simple modification, equivalent variations and remodeling above example made according to the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (5)
1. a hydrophobicity filter paper, is made up of with adhesive glass fibre, it is characterised in that the uniform random distribution of described glass fibre, forms loose structure between fiber, and adhesive forms netted joint face on fiber interface point；Described glass fibre is made up of glass fibre cotton and glass chopped silk, and glass chopped silk plays skeletal support effect in filter paper, and glass fibre cotton is then overlapped on alkali-free glass fibre chopped silk and forms loose structure, improves the filter effect of filter paper；Described adhesive is hydrophobic modified phenolic resin, when being sprayed onto fiberglass surfacing, is wrapped in every fiber surface and forms hydrophobicity protective layer, after solidification is dried, make filter paper have excellent hydrophobicity performance.
A kind of hydrophobicity filter paper the most according to claim 1, it is characterised in that described glass chopped filament diameter is 5～15 μm, and glass fibre cotton diameter is between 2～4 μm, and both mass ratioes are 1: 5～10.
A kind of hydrophobicity filter paper the most according to claim 1, it is characterized in that described adhesive formulation includes: phenolic resin is 40～70 parts, KH550 is 0.1～5 part, and emulsifying methyl-silicone oil is 1～20 part, ammonium sulfate is 1～8 part, and softening water is 200～900 parts.
4. the preparation method of a hydrophobicity filter paper, it is characterised in that comprise the following steps:
1. slurrying is disperseed: glass chopped silk and the glass fibre cotton raw material of certain mass ratio are added making beating dispersion in beater, obtains slurry；Described beating time is 20～25min, the beating degree after making beating 20 °～80 °；
2. slagging-off processes: be delivered in pond with slurry stir and carry out slagging-off process, the regulation solid content of slurry, viscosity and pH value by slurry, white water solution；The solid content of slurry is 0.2～0.5%, and viscosity is 8cp～11cp, and pH is 4～8；White water solution includes: pure water, fatty acid condensation polymer dispersant and polysiloxane defoaming agent；
3. wet moulding: the mixed slurry stirred is delivered to molding on paper industry molding device and obtains l Water Paper, prepares ground paper after l Water Paper carrying out evacuation eccysis water and squeezing；
4. spray sizing material: being diluted by adhesive, be uniformly sprayed on glass fibre ground paper, unnecessary adhesive siphons away, re-use；
5. dried: the glass fibre ground paper of glue spraying is sent into baking oven and is dried, and to obtain final product, hydrophobized glass fiber filter paper；Described drying temperature 200～300 DEG C, drying time is 5～20min.
The preparation method of a kind of hydrophobicity filter paper the most according to claim 4, it is characterised in that the thickness of described hydrophobized glass fiber filter paper is 0.05～2mm, and grammes per square metre is 50～80g/m2, resistance≤350Pa, intensity >=1500N/m, deflection >=1.3mN.m, filter efficiency >=99.7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281611.7A CN105821710A (en) | 2016-04-22 | 2016-04-22 | Hydrophobic filter paper and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610281611.7A CN105821710A (en) | 2016-04-22 | 2016-04-22 | Hydrophobic filter paper and preparation method thereof |
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| CN105821710A true CN105821710A (en) | 2016-08-03 |
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| CN201610281611.7A Pending CN105821710A (en) | 2016-04-22 | 2016-04-22 | Hydrophobic filter paper and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106283909A (en) * | 2016-09-08 | 2017-01-04 | 南京航空航天大学 | A kind of hydrophobized glass fiber filter paper and preparation method thereof |
| CN106400599A (en) * | 2016-09-08 | 2017-02-15 | 南京航空航天大学 | High-temperature-resisting filter paper and preparation method thereof |
| CN106401691A (en) * | 2016-08-31 | 2017-02-15 | 泰豪科技股份有限公司 | Engine oil circulating system of engine and filter paper manufacturing technology for system |
| CN106638153A (en) * | 2016-09-08 | 2017-05-10 | 南京航空航天大学 | Efficient composite filter paper |
| CN113445364A (en) * | 2020-03-26 | 2021-09-28 | 杭州特种纸业有限公司 | Flame-retardant air filter paper and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106401691A (en) * | 2016-08-31 | 2017-02-15 | 泰豪科技股份有限公司 | Engine oil circulating system of engine and filter paper manufacturing technology for system |
| CN106283909A (en) * | 2016-09-08 | 2017-01-04 | 南京航空航天大学 | A kind of hydrophobized glass fiber filter paper and preparation method thereof |
| CN106400599A (en) * | 2016-09-08 | 2017-02-15 | 南京航空航天大学 | High-temperature-resisting filter paper and preparation method thereof |
| CN106638153A (en) * | 2016-09-08 | 2017-05-10 | 南京航空航天大学 | Efficient composite filter paper |
| CN106400599B (en) * | 2016-09-08 | 2018-06-15 | 南京航空航天大学 | A kind of preparation method of high temperature resistant filter paper |
| CN113445364A (en) * | 2020-03-26 | 2021-09-28 | 杭州特种纸业有限公司 | Flame-retardant air filter paper and preparation method thereof |
| CN113445364B (en) * | 2020-03-26 | 2023-11-14 | 杭州特种纸业有限公司 | Flame-retardant air filter paper and preparation method thereof |
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Address after: 215400 Suzhou, Jiangsu, Taicang Town, the people of the South Road, No. 162 Applicant after: TAICANG PAIOU TECHNOLOGY CONSULTATION SERVICE CO., LTD. Address before: 215400 Suzhou, Jiangsu, Taicang Town, the people of the South Road, No. 162 Applicant before: Suzhou Oupai Technology Consulting Services Co., Ltd. |
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Application publication date: 20160803 |