CN117385675A - High-efficiency low-resistance high-waterproof glass fiber air filter material and preparation method thereof - Google Patents
High-efficiency low-resistance high-waterproof glass fiber air filter material and preparation method thereof Download PDFInfo
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- CN117385675A CN117385675A CN202311448123.7A CN202311448123A CN117385675A CN 117385675 A CN117385675 A CN 117385675A CN 202311448123 A CN202311448123 A CN 202311448123A CN 117385675 A CN117385675 A CN 117385675A
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000011491 glass wool Substances 0.000 claims abstract description 32
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 23
- 238000010079 rubber tapping Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000011268 mixed slurry Substances 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 238000004537 pulping Methods 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000004513 sizing Methods 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 18
- 238000012546 transfer Methods 0.000 claims description 11
- 239000004925 Acrylic resin Substances 0.000 claims description 10
- 229920000178 Acrylic resin Polymers 0.000 claims description 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 32
- 238000010009 beating Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000835 fiber Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier 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
-
- 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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention belongs to the technical field of papermaking, and particularly relates to a high-efficiency low-resistance high-waterproof glass fiber air filter material and a preparation method thereof. The method comprises the following steps: pulping: adding water into a hydrapulper, regulating the pH value by sulfuric acid, and adding glass wool with the tapping degree of 52-60 DEG SR, glass wool with the tapping degree of 45-51 DEG SR and glass wool with the tapping degree of 17-21 DEG SR for crushing; then adding chopped glass fiber for breaking, and finally controlling the mass concentration of the raw materials in water to be 1-3%; preparing slurry: after dispersion, the slurry enters a slurry preparation tank without tool setting through a high-frequency fluffer, and the slurry preparation concentration is controlled to be 1-1.5%, so as to obtain a mixed slurry suspension; and (5) carrying out flow forming, drying and coiling to obtain finished paper. The air filter material prepared by the invention has good waterproof effect, and can ensure that the filter continuously works and operates in a wet environment, thereby prolonging the service life of the filter, reducing the trouble of frequent replacement and reducing the replacement cost.
Description
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to a high-efficiency low-resistance high-waterproof glass fiber air filter material and a preparation method thereof.
Background
Filter paper is a key material of a filter, and air filter paper has higher requirements on air inlet resistance, filtering precision and service life. The traditional process of wood pulp paper or wood pulp and polyester fiber can only reach F7 level in the filtering precision, meanwhile, the air inlet resistance is larger, the dampproof effect is poor, especially, the requirements of medicine and electronic industry on filters are extremely high, the high precision is required, meanwhile, the low resistance effect is achieved, in addition, the weather of the southern rainy days is more, and the requirement on the dampproof performance of filter paper is extremely high.
Patent CN104060497B discloses a high-performance low-ration air filter paper, which is prepared from alkali-free glass fiber chopped filaments with the diameter of 5-6um, alkali-free glass fiber cotton with the diameter of 0.3-0.8um and bonding sizing materials, wherein the mass ratio of the alkali-free glass fiber chopped filaments to the alkali-free glass fiber cotton is 1:4-9, and the bonding sizing materials are acrylic resin and fluorocarbon water repellent. The invention also discloses a method for preparing the air filter paper, which comprises the steps of firstly selecting glass fibers according to a proportion, dispersing and pulping, then transferring the pulp to a papermaking front tank, adjusting the pH to 4-5, then transferring the pulp to a net front tank, adjusting the pH to 6-8, then wet forming to prepare wet paper, and finally drying the wet paper to obtain the product, wherein the filtering efficiency of the air filter paper can only reach the H14 level, and the waterproof effect is not proved by any reason.
Therefore, an air filter material with high efficiency, low resistance and good waterproof effect is required to be clean and dust-free in a production workshop to protect the navigation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the high-efficiency low-resistance high-waterproof glass fiber air filter material, which not only ensures higher filtering precision and lower air resistance, but also has an ultrahigh waterproof effect, is suitable for the rainy and humid weather in the south, prolongs the service life of the filter and completely meets the air purification requirements of electronic and medical workshops.
The invention also provides a preparation method of the composite material, and the design is scientific and reasonable.
The invention relates to a high-efficiency low-resistance high-waterproof glass fiber air filter material, which comprises the following raw materials in parts by weight:
the chopped glass fiber filaments had a chopped length of 6mm.
The chopped glass fiber is a mixture of chopped glass fiber with the diameter of 5um and chopped glass fiber with the diameter of 9um in a mass ratio of (5-11): 5-11.
The invention relates to a preparation method of a high-efficiency low-resistance high-waterproof glass fiber air filter material, which comprises the following steps:
(1) Pulping: adding water into a hydrapulper, regulating pH value with sulfuric acid, and adding glass wool with a tapping degree of 52-60 degrees SR, glass wool with a tapping degree of 45-51 degrees SR and glass wool with a tapping degree of 17-21 degrees SR for crushing for 2-5min; then adding chopped glass fiber, and crushing for 1-2min to finally control the mass concentration of the raw materials in water to be 1-3%;
(2) Preparing slurry: after being dispersed, the slurry enters a slurry preparation tank without tool setting, and the concentration of the slurry is controlled to be 1-1.5% to obtain a mixed slurry suspension;
(3) And (3) flow forming: the mixed slurry suspension is pumped to an inclined wire paper machine according to the concentration of 0.4-1.0 per mill for papermaking and dehydration, formed on a forming wire, then passed through a sizing machine through a transfer wire and sized on the transfer wire in a glue spraying mode.
(4) And (3) drying and coiling: drying the wet paper sheet coated with the glue by a drying cylinder to finally obtain finished paper, wherein the drying cylinder is divided into three sections, steam firstly passes through a high-temperature section C, then passes through a high-temperature section B and a high-temperature section A, and the steam pressure of the high-temperature section C is 650-750kPa, the steam pressure of the high-temperature section B is 650-750kPa and the steam pressure of the high-temperature section A is 450-550kPa.
The pH value in the step (1) is 2.3-2.8.
This pH range is advantageous for dispersion of glass fibers, high in tendency to agglomerate, and low in tendency to develop lumps (spotting).
The sizing in step (3) has a pH of 8 to 11.
The glue solution used in the step (3) is a mixture of acrylic resin KHL-4350 (Shandong Kunkan New Material technology Co., ltd.) and fluorine-containing waterproof and oil-proof agent TG-5673 (Da Jin Fuhua Co., ltd.). Wherein the mass ratio of the acrylic resin to the fluorine-containing water-proof and oil-proof agent is 3:1.
The sizing amount of the sizing in the step (3) is 4-7%.
The basis weight of the finished paper in the step (4) is 70-78g/m 2 。
And (3) the speed of the drying step of the dryer is 95-105m/min.
Compared with the prior art, the invention has the following beneficial effects:
(1) The air filter material prepared by the invention has good waterproof effect, and can ensure that the filter continuously works and operates in a wet environment, thereby prolonging the service life of the filter, reducing the trouble of frequent replacement and reducing the replacement cost.
(2) The air filter material prepared by the invention has high-efficiency low-resistance performance, and reduces wind resistance on the premise of meeting the requirement of ultra-high filtration precision, thereby saving electricity consumption.
(3) The air filter material prepared by the method has good stiffness and tensile strength, high stiffness, no bending deformation during paper folding, more stiff and attractive appearance and high strength, can cope with larger air quantity and air speed, and is suitable for various working condition environments.
(4) 10-16 parts of glass wool with a beating degree of 52-60 DEG SR and 33-43 parts of glass wool with a beating degree of 45-51 DEG SR are designed and used; the precision and efficiency of the glass fiber paper can be effectively ensured; in addition, 30-36 parts of glass wool with the click degree of 17-21 DEG SR are matched for use, so that the resistance can be effectively reduced, and the dust holding capacity can be improved.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited thereto.
All materials used in the examples are commercially available, except as specified.
The glass wool used in the examples and comparative examples of the present invention were purchased from the city of Xin Long Bo fiber limited company.
Example 1
(1) Preparing materials: 13 parts of glass wool with a beating degree of 58 DEG SR, 38 parts of glass wool with a beating degree of 48 DEG SR, 33 parts of glass wool with a beating degree of 18 DEG SR and 8 parts of chopped glass fiber yarn with a chopping length of 6mm and a diameter of 5um are prepared; 8 parts of chopped glass fiber yarn with the length of 6mm and the diameter of 9 um;
(2) Pulping: adding clear water into a hydrapulper, regulating the pH value to be 2.55 by sulfuric acid, and adding glass wool with the tapping degree of 58 DEG SR, glass wool with the tapping degree of 48 DEG SR and glass wool with the tapping degree of 18 DEG SR for 3min; then adding chopped glass fiber with the chopped length of 6mm and the diameter of 5um and chopped glass fiber with the chopped length of 6mm and the diameter of 9um, and crushing for 1min, so that the mass concentration of the fiber in water is controlled to be 1.5%;
(3) Preparing slurry: after being dispersed, the slurry enters a slurry mixing tank without tool setting, and the slurry concentration is controlled at 1 percent;
(4) And (3) flow forming: pumping the mixed slurry suspension to an inclined wire paper machine according to the concentration of 0.4 per mill for papermaking and dehydration, forming on a forming wire, then sizing on the transfer wire through a sizing machine by a glue spraying mode through a transfer wire, and controlling the sizing pH value to be 10; wherein the glue solution consists of acrylic resin KHL-4350 (Shandong Kunkan New Material science and technology Co., ltd.) and fluorine-containing waterproof and oil-proof agent TG-5673 (Da Jin Fuhua engineering (China Co.) Co., ltd.), wherein the mass ratio of the acrylic resin to the fluorine-containing waterproof and oil-proof agent is 3:1, and the whole glue coating amount is controlled at 5%;
(5) And (3) drying and coiling: drying the wet paper sheet coated with the glue by a dryer to obtain finished paper, wherein the finished paper is dried by the dryerThe cylinder drying is divided into three sections, wherein the steam pressure of the high-temperature section A is 500kPa, the steam pressure of the high-temperature section B is 700kPa, and the steam pressure of the high-temperature section C is 700kPa; wherein the basis weight of the paper is 74g/m 2 The production speed is controlled at 100m/min.
Example 2
(1) Preparing materials: preparing 16 parts of glass wool with a beating degree of 58 DEG SR, 35 parts of glass wool with a beating degree of 48 DEG SR, 33 parts of glass wool with a beating degree of 18 DEG SR and 5 parts of chopped glass fiber yarn with a chopping length of 6mm and a diameter of 5 um; 11 parts of chopped glass fiber yarn with the length of 6mm and the diameter of 9 um;
(2) Pulping: adding clear water into a hydrapulper, regulating the pH value to 2.6 by sulfuric acid, and adding glass wool with the tapping degree of 58 DEG SR, glass wool with the tapping degree of 48 DEG SR and glass wool with the tapping degree of 18 DEG SR for 4min; then adding chopped glass fiber with the chopping length of 6mm and the diameter of 5um and chopped glass fiber with the chopping length of 6mm and the diameter of 9um, and crushing for 2min, so that the mass concentration of the fiber in water is controlled to be 1.2%;
(3) Preparing slurry: after being dispersed, the slurry enters a slurry mixing tank without tool setting, and the slurry concentration is controlled at 1.5 percent;
(4) And (3) flow forming: pumping the mixed slurry suspension to an inclined wire paper machine according to the concentration of 0.4 per mill for papermaking and dehydration, forming on a forming wire, then sizing on a transfer wire through a sizing machine by a glue spraying mode through the transfer wire, and controlling the sizing pH value to be 11; wherein the glue solution consists of acrylic resin KHL-4350 (Shandong Kunkan New Material science and technology Co., ltd.) and fluorine-containing waterproof and oil-proof agent TG-5673 (Da Jin Fuhua engineering (China Co.) Co., ltd.), wherein the mass ratio of the acrylic resin to the fluorine-containing waterproof and oil-proof agent is 3:1, and the whole glue coating amount is controlled at 6%;
(5) And (3) drying and coiling: drying the wet paper sheet coated with the glue by a drying cylinder to finally obtain finished paper, wherein the drying cylinder is divided into three sections, namely, the steam pressure of a high-temperature section A is 500kPa, the steam pressure of a high-temperature section B is 700kPa, and the steam pressure of a high-temperature section C is 700kPa; wherein the basis weight of the paper is 76g/m 2 The production speed is controlled at 100m/min.
Example 3
(1) Preparing materials: 14 parts of glass wool with a beating degree of 58 DEG SR, 40 parts of glass wool with a beating degree of 48 DEG SR, 30 parts of glass wool with a beating degree of 18 DEG SR and 9 parts of chopped glass fiber with a chopping length of 6mm and a diameter of 5um are prepared; 7 parts of chopped glass fiber yarn with the length of 6mm and the diameter of 9 um;
(2) Pulping: adding clear water into a hydrapulper, regulating the pH value to 2.5 by sulfuric acid, and adding glass wool with the tapping degree of 58 DEG SR, glass wool with the tapping degree of 48 DEG SR and glass wool with the tapping degree of 18 DEG SR for 4min; then adding chopped glass fiber with the chopped length of 6mm and the diameter of 5um and chopped glass fiber with the chopped length of 6mm and the diameter of 9um, and crushing for 2min, so that the mass concentration of the fiber in water is controlled to be 1.5%;
(3) Preparing slurry: after being dispersed, the slurry enters a slurry mixing tank without tool setting, and the slurry concentration is controlled at 1.3 percent;
(4) And (3) flow forming: pumping the mixed slurry suspension to an inclined wire paper machine according to the concentration of 0.4 per mill for papermaking and dehydration, forming on a forming wire, then sizing on the transfer wire through a sizing machine by a glue spraying mode through a transfer wire, and controlling the sizing pH value to be 10.5; wherein the glue solution consists of acrylic resin KHL-4350 (Shandong Kunkan New Material science and technology Co., ltd.) and fluorine-containing waterproof and oil-proof agent TG-5673 (Da Jin Fuhua engineering (China Co.) Co., ltd.), wherein the mass ratio of the acrylic resin to the fluorine-containing waterproof and oil-proof agent is 3:1, and the whole glue coating amount is controlled to be 5.5%;
(5) And (3) drying and coiling: drying the wet paper sheet coated with the glue by a drying cylinder to finally obtain finished paper, wherein the drying cylinder is divided into three sections, namely, the high-temperature section A steam pressure is 550kPa, the high-temperature section B steam pressure is 750kPa, and the high-temperature section C steam pressure is 750kPa; wherein the basis weight of the paper is 70g/m 2 The production speed is controlled at 102m/min.
Comparative example 1
The other points are the same as in example 1, except that:
glass wool of 52-60 ° SR was not used;
comparative example 2
The other points are the same as in example 1, except that:
chopped glass fiber is not added;
comparative example 3
The other points are the same as in example 1, except that:
no fluorine-containing water-and oil-repellent agent TG-5673 was added.
Comparative example 4
The other points are the same as in example 1, except that:
and (3) regulating the pH value of the step (2) to 2.0.
Comparative example 5
The other points are the same as in example 1, except that:
and (3) adjusting the pH value of the step (2) to 4.0.
The products prepared in examples 1-3 and comparative examples 1-3 were tested and the results are shown in Table 1.
Resistance and efficiency are according to EN1822-2009 standard, and the test equipment is a TSI8130A automatic filter tester;
the stiffness is measured by a CF-520 type Gerley stiffness meter, and the applicable standard is as follows:
-TAPPI T543-1994 bending positive force of paper (gurley stiffness apparatus);
american society for testing and materials ASTM D6125-97, paper and bending Positive (Gerley Tapper) in paper board;
-American society of environmental sciences and technologies IEST-RP-CCO21.2 (2005) [ HEPA and ULPA filter experiments ];
-CRAA 433 test method for air Filter paper Performance of China refrigeration and air Condition industry Association;
the water absorption is detected by using a hydrostatic pressure resistance detector according to GB 4744-1997;
the longitudinal and transverse tension was measured according to GB/T12914-2008 using a tensile strength tester.
Table 1 test results
The stiffness of comparative example 4 was too high and the finished paper was too brittle and liable to break.
Claims (10)
1. The high-efficiency low-resistance high-waterproof glass fiber air filter material is characterized by comprising the following raw materials in parts by weight:
2. the high efficiency, low resistance, high water resistant fiberglass air filter of claim 1, wherein the chopped fiberglass filaments have a chopped length of 6mm.
3. The efficient low-resistance high-waterproof glass fiber air filter material according to claim 1, wherein the chopped glass fiber yarns are a mixture of chopped glass fiber yarns with a diameter of 5um and chopped glass fiber yarns with a diameter of 9um in a mass ratio of (5-11): 5-11.
4. A method for preparing the high-efficiency low-resistance high-waterproof glass fiber air filter material according to any one of claims 1 to 3, which is characterized by comprising the following steps:
(1) Pulping: adding water into a hydrapulper, regulating the pH value by sulfuric acid, and adding glass wool with the tapping degree of 52-60 DEG SR, glass wool with the tapping degree of 45-51 DEG SR and glass wool with the tapping degree of 17-21 DEG SR for crushing; then adding chopped glass fiber to carry out disintegration, and finally controlling the mass concentration of the raw materials in water to be 1-3%;
(2) Preparing slurry: after being dispersed, the slurry enters a slurry preparation tank without tool setting, and the concentration of the slurry is controlled to be 1-1.5% to obtain a mixed slurry suspension;
(3) And (3) flow forming: pumping the mixed slurry suspension to an inclined wire paper machine according to the concentration of 0.4-1.0 per mill for papermaking and dehydration, forming on a forming wire, then sizing on a transfer wire in a sizing machine through a transfer wire, and sizing on the transfer wire in a glue spraying mode;
(4) And (3) drying and coiling: drying the wet paper sheet coated with the glue by a drying cylinder to finally obtain finished paper, wherein the drying cylinder is divided into three sections, steam firstly passes through a high-temperature section C, then passes through a high-temperature section B and a high-temperature section A, and the steam pressure of the high-temperature section C is 650-750kPa, the steam pressure of the high-temperature section B is 650-750kPa and the steam pressure of the high-temperature section A is 450-550kPa.
5. The method for preparing a high-efficiency low-resistance high-water-proof glass fiber air filter material according to claim 4, wherein the pH value in the step (1) is 2.3-2.8.
6. The method for preparing a highly efficient, low-resistance, high-waterproof glass fiber air filter according to claim 4, wherein the pH of the sizing in the step (3) is 8-11.
7. The method for preparing a high-efficiency low-resistance high-water-proof glass fiber air filter material according to claim 4, wherein the glue solution used in the step (3) is a mixture of acrylic resin and fluorine-containing water-proof and oil-proof agent.
8. The method for preparing a high-efficiency low-resistance high-waterproof glass fiber air filter material according to claim 4, wherein the sizing amount of the sizing in the step (3) is 4-7%.
9. The method for preparing a high-efficiency low-resistance high-waterproof glass fiber air filter material according to claim 4, wherein the basis weight of the finished paper in the step (4) is 70-78g/m 2 。
10. The method for preparing a high-efficiency low-resistance high-waterproof glass fiber air filter material according to claim 4, wherein the speed of the drying step of the dryer in the step (4) is 95-105m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN202311448123.7A CN117385675A (en) | 2023-11-02 | 2023-11-02 | High-efficiency low-resistance high-waterproof glass fiber air filter material and preparation method thereof |
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