CN109653024A - A kind of single side applies solidification filter paper and preparation method thereof - Google Patents
A kind of single side applies solidification filter paper and preparation method thereof Download PDFInfo
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- CN109653024A CN109653024A CN201811393682.1A CN201811393682A CN109653024A CN 109653024 A CN109653024 A CN 109653024A CN 201811393682 A CN201811393682 A CN 201811393682A CN 109653024 A CN109653024 A CN 109653024A
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- 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
- D21H15/10—Composite 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/08—Mechanical or thermomechanical pulp
-
- 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
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/26—Polyamides; Polyimides
-
- 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
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- 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
- 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
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than 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
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for 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
- 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
- D21H21/06—Paper forming aids
- D21H21/12—Defoamers
-
- 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
-
- 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
- D21H21/34—Ignifugeants
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Filtering Materials (AREA)
- Paper (AREA)
Abstract
The present invention relates to solidification filter paper technical fields, to prepare a kind of higher single side solidification filter paper of intensity, the purpose of the present invention is to provide a kind of single sides to apply solidification filter paper and preparation method thereof, single side painting solidifies filter paper and is made by being heating and curing after the one side coating dipping glue of body paper ontology, wherein body paper ontology is made of compound wood pulp liquid, PPTA staple fiber, polyetherimide powder, polyethyleneimine etc., and compound wood pulp liquid is the mixture of mercerization wood pulp and softwood pulp；Dipping glue is made of thermosetting phenolic resin, styrene-acrylic emulsion, nano silicon nitride silica aerogel, fire retardant etc..The filtration resistance that single side painting of the invention solidifies filter paper is small, and maintain stronger anti-flammability, heat resisting and filter paper intensity, and the intensity and filtering accuracy of filter paper are high, it is few that preparation method saves step, process is succinct, it is more easier to operate, the filter core that gained solidifies the filter that filter paper is suitable as engine uses.
Description
Technical field
The present invention relates to solidification filter paper technical fields, and in particular to a kind of single side applies solidification filter paper and preparation method thereof.
Background technique
Filter is located in engine system, has three kinds of air, machine oil, fuel oil filters by function division, effect is
Filter out dust, sand grains, the impurity in fluid.Common filter has inertia oil-bath filter, papery dry type filter, poly- ammonia
Ester filter core filter etc..Wherein papery dry type filter is current widely used automobile filter, and filter core is by glue
The raw paper of filter paper of glutinous agent processing rolls after forming solidification filter paper, and adhesive forms the cured layer for solidifying filter paper, raw paper of filter paper
It is then mainly manufactured paper with pulp and is made by plant fibre slurry liquid, have the advantages that filtering efficiency is high, structure is simple, light weight and cost is low etc..
The solidification filter paper for preparing filter core currently on the market is essentially two-sided solidification filter paper, two-sided solidification filter paper filtration resistance
Greatly, the service life is relatively low when causing filter to use, so a kind of lesser solidification filter paper of filtration resistance is needed, and single side solidifies filter paper
It is a kind of preferable selection, cured layer is located at the unilateral side of micropore filter paper, can be substantially reduced filtration resistance.
Applicant is in the patent of invention " a kind of heavy load solidification oil filter paper " that Authorization Notice No. is CN104831586B
In disclose and a kind of impregnating agent dipping is placed in using raw paper of filter paper and then solidifies obtained two-sided solidification filter paper, the solidification filter paper
Filter efficiency it is high, filtering accuracy is good, high temperature resistant, although however it is durable compared with other same types solidify filter paper, away from Shen
Satisfied using effect of asking someone still has a certain distance.Further, when coating the solidification filter paper single side, although crossing filtration resistance
Power decline, but the enhancing due to lacking two-sided cured layer is protected, the intensity and filtering accuracy of filter paper are also affected, filter simultaneously
The side of paper body paper is exposed, and the heat resistance and anti-flammability for solidifying filter paper are declined.Therefore, intensity height, filtering essence how to be prepared
Degree, heat resistance, anti-flammability and the comparable single side solidification filter paper needs of two-sided solidification filter paper are further probed into.
Summary of the invention
To prepare a kind of higher single side solidification filter paper of intensity, the purpose of the present invention is to provide a kind of single sides to apply solidification filter
Paper, filtration resistance is low, while intensity is high, can satisfy the application in engine system.
Another object of the present invention is to provide the preparation methods that the single side solidifies filter paper.
The present invention provides the following technical solution:
A kind of single side painting solidification filter paper is made by being heating and curing after the one side coating dipping glue of body paper ontology, in which:
Body paper ontology is made of the components of following parts: 100~120 parts of compound wood pulp liquid, gathers at 30~40 parts of PPTA staple fiber
16~22 parts of etherimide powder, 2~5 parts of polyethyleneimine, 4~7 parts of expanding material, 2~4 parts of waterproofing agent, 5~8 parts of dispersing agent,
2~5 parts of defoaming agent, 0.2~0.5 part of brightening agent, the compound wood pulp liquid are the mixture of mercerization wood pulp and softwood pulp；Leaching
Stain glue is made of the components of following parts: 100~120 parts of thermosetting phenolic resin, 20~30 part, nanometer nitrogen of styrene-acrylic emulsion
15~25 parts of SiClx aeroge, 20~26 parts of fire retardant, 1~3 part of zirconium class coupling agent, 1~3 part of calcium stearate, methanol 250~
300 parts, 20~30 parts of isopropyl acetate.
As a preference of the present invention, the PPTA staple fiber is prepared through following procedure: by poly(p-phenylene terephthalamide)
It is dissolved in the concentrated sulfuric acid, addition perfluor silicone oil, ethoxylated dodecyl alcohol are uniformly mixed, are then made through conventional dry-jet wet spinning process
PPTA fiber, then cutting obtains the PPTA staple fiber that length is 600~1000 μm.
As a preference of the present invention, the matter of poly(p-phenylene terephthalamide) and perfluor silicone oil, ethoxylated dodecyl alcohol
Amount is than being 1:0.2~0.4:0.01~0.03.
As a preference of the present invention, the compound slurry is made through following procedure: mercerization wood pulp and softwood pulp are pressed
2~3.8:1 of mass ratio mixes to obtain mixed serum, and wood pulp concentration is 54~62wt%, and aluminum sulfate solution is added and aluminum stearate is molten
Solution is uniformly mixed, and is adjusted the pH value of slurries to 3~4, is heated to 75~80 DEG C, is slowly added under 60~80r/min stirring condition
Calcium hydroxide emulsion adds rapidly titanate coupling agent, nano hydrotalcite powder after addition, continue stirring 90~
120min stands to obtain compound wood pulp liquid.
As a preference of the present invention, the quality for the aluminum sulfate being added is 8~13wt% of mixed serum quality, stearic acid
The molar ratio of aluminium, calcium hydroxide and aluminum sulfate is 0.15~0.2:1.5~2:1, nano talc, titanium esters acid coupling agent and sulfuric acid
The mass ratio of aluminium is 0.28~0.45:0.01~0.02:1.
As a preference of the present invention, each partial size X range of polyetherimide powder are as follows: 5≤X < 10 μm, 10 < X≤18 μm,
18 < X≤24 μm, 24 < X≤30 μm, the mass ratio of each partial size are as follows: 0.1~0.2:1:0.3~0.5:0.6~0.8.
As a preference of the present invention, expanding material is ethyl methacrylate and pyridine 1:0.4 in mass ratio~0.6 composition
Mixture.
As a preference of the present invention, the fire retardant be Melamine Polyphosphate, poly- methyltriethoxysilane with
The compound of polyaluminium sulfate, the mass ratio of three are followed successively by 3~4:1~2:1.
It is compounded with mercerization wood pulp using cotton linter pulp, acid fiber by polylactic in patent CN104831586B and prepares body paper, cotton
Short flannel slurry is made of cotton linter boiling removal lignin, pectin, cotton seed hulls and other impurities etc., and cotton linter is in high temperature, high-alkali steaming
Loss cotton fiber is more during boiling, and the intensity of the short slurry of velveteen is caused decline, while will alkali process again when the short slurry use of velveteen
Alkali process, therefore be unfavorable for using in applying body paper intensity requirement higher single side solidification filter paper preparation.And acid fiber by polylactic
Although intensity is higher, it can be melted between 150~170 DEG C, since the side of body paper ontology is exposed and working environment temperature
Degree is higher, therefore acid fiber by polylactic is also not suitable for applying to solidify in filter paper in single side using.
Body paper ontology of the invention based on compound wood pulp liquid, by with PPTA staple fiber, polyetherimide powder, poly-
The compoundings such as aziridine are made.Compound wood pulp liquid used is the mixed serum of mercerization wood pulp and softwood pulp, and softwood pulp can
Targetedly to enhance the intensity of body paper ontology.And PPTA staple fiber, that is, p-aramid fiber, compared with meta-aramid, although anti-flammability
Can be weak, but heat resistance and strength modulus are high, therefore suitable using the intensity for enhancing body paper ontology in body paper ontology and resistance to
Hot, on this basis, inventor targetedly selects PPTA staple fiber and softwood pulp substitution acid fiber by polylactic and cotton short
Suede slurry.And polyetherimide powder is a kind of unformed engineering resin, has flame retardant property and high temperature resistant dimensional stability, it can
To assign body paper ontology certain flame retardant property, and enhance the heat-resistant stability of body paper ontology, the primary amine in polyethyleneimine and
Secondary amine can be crosslinked with the hydroxyl of wood pulp cellulose to react, and enhances the dry strength of filter paper, and can play flocculating effect, strengthens
The filter efficiency and precision of filter paper.
To strengthen the bonding strength of PPTA staple fiber and wood-fibred and the anti-flammability of PPTA fiber, PPTA staple fiber is existed
Perfluor silicone oil is added in preparation process, perfluor silicone oil is connect through ethoxylated dodecyl alcohol with the surface PPTA, is on the one hand introduced and is contained
Hydrogen bond action occurs between fluorine molecule, with wood-fibred, bridge formation connection function is played between PPTA staple fiber and wood pulp liquid, it is another
Aspect perfluor silicone oil itself has stronger flame retardant property and heat-resisting, water-resistant stability, and the fire-retardant of PPTA staple fiber can be enhanced
Property and use intensity, strengthen effect of the PPTA staple fiber in body paper ontology.
To further enhance the intensity and filtering accuracy that solidify filter paper, it is molten that aluminum sulfate is added into compound wood pulp liquid by inventor
Liquid and aluminum stearate are uniformly dissolved, and are then slow added into calcium hydroxide emulsion and are carried out intensive treatment to compound wood pulp liquid.Hydrogen-oxygen
Change calcium lotion and aluminum sulfate forms network-like polyaluminium sulfate in the stabilization of aluminum stearate.Polyaluminium sulfate is paper maker
Common flocculant in industry wastewater treatment process has porous structure, can be used as filter medium use.Inventor is in practice
It was found that polyaluminium sulfate has stronger heat resistance.Since the main component of wood pulp is the wood pulp cellulose of cavernous crosslinking
And a small amount of lignin, therefore polyaluminium sulfate forms interpenetrating net with wood pulp cellulose and the in-situ polymerization preparation in wood pulp
Network structure.The modifying function played to wood pulp cellulose, enhancing wood are connected by forming interpenetrating networks in microstructure level in this way
The heat resistance of pulp fibres, and use intensity can be enhanced.Polyaluminium sulfate releases the crystallization water in 250 DEG C or so pyrolytics, can
Wood pulp cellulose surface temperature is reduced, and polyaluminium sulfate decomposes to obtain the non-flammable substance such as aluminium oxide at higher temperatures,
It is attached to wood pulp cellulose surface, to play cooling and oxygen barrier flame retardant effect, the anti-flammability of reinforcement PPTA fiber.Simultaneously as poly-
Closing aluminum sulfate itself has porous structure, and has flocculation, therefore the solidification that can be improved to small particle impurity
The filter efficiency and precision of filter paper.After calcium hydroxide emulsion is added, interpenetrating networks not yet form completely, are added receive at this time
Rice hydrotalcite, can be stored in interpenetrating networks, and be connected to wood pulp cellulose surface through titanium esters acid coupling agent, on the one hand enhance wood
The intensity and waterproof performance of pulp fibres, another aspect hydrotalcite is 200 DEG C of front and backs, and can especially be heated at 250 DEG C or more dehydration,
Strengthen the cooling flame retardant effect of polyaluminium sulfate, while the carbonate contained in hydrotalcite can decompose generation carbon dioxide, reduces
Partial pressure of oxygen plays oxygen barrier flame retardant effect, and hydrotalcite is then changed into composite oxide of metal, and intensity gets a promotion, and improves wood
The high-temperature capability of pulp fibres at high temperature.
Since the average pore size of raw paper of filter paper is generally at 40~50 μm, using the polyetherimide of different-grain diameter range
Powder is added in raw paper of filter paper, and due to partial size difference, these polyetherimide powders can connect in the micropore of body paper ontology
Continuous distribution, and the gap between adjacent powder then forms filtering duct, to improve the filtering accuracy for solidifying filter paper.It controls simultaneously
Content of powder of the partial size in 10 < X≤18 μm is most, can avoid blockage of the micro orifice as far as possible in this way.
Expanding material used is made of ethyl methacrylate and pyridine by quality, can enhance wood pulp cellulose and polyetherimide
The compatibility of the components such as amine improves the mixing uniformity of each component in body paper ontology.Defoaming agent can be commonly to disappear in papermaking
Infusion, such as butanol, octanol.Waterproofing agent used is preferably melamine resin, and dispersing agent is preferably Ashless butyl diimide point
Powder, brightening agent are preferably fluorescent whitening agent 85.
Thermosetting phenolic resin in dipping glue plays the Thermocurable energy of main body, and nano silicon nitride silica aerogel can
Enhance the heat-insulated of cured layer, heat resistance, hydrophobicity and impact resistance, chemical resistance, to enhance the intensity for solidifying filter paper and resistance to
It is hot.Fire retardant by Melamine Polyphosphate, poly- methyltriethoxysilane and polyaluminium sulfate according to a certain mass ratio
Compounding obtains.Inventor is and more by melamine in practice, it has been found that the flame retardant effect that adds of single fire retardant is not satisfactory
After Quadrafos, poly- methyltriethoxysilane are compounded with polyaluminium sulfate, thermosetting phenolic is distributed to using polyaluminium sulfate
In resin, pass through the fire-retardant complex role energy of Melamine Polyphosphate, poly- methyltriethoxysilane and polyaluminium sulfate
The flame retardant effect of enough effectively enhancing rubber shoe latex layers, methanol and isopropyl acetate play the role of mixed solvent.
The present invention by strengthening cured layer and body paper ontology respectively, while reducing filtration resistance, gained
Intensity and anti-flammability, the heat resistance and filtering accuracy that single side painting solidifies filter paper are greatly improved, and can satisfy engine
Systematic difference demand.
Above-mentioned single side applies the preparation method for solidifying filter paper, comprising the following steps:
(1) dispersing agent, polyester staple fiber, defoaming agent, waterproofing agent and increase-volume are sequentially added under stirring condition into compound wood pulp liquid
Agent is uniformly mixed, and polyetherimide powder mixing is then added, adds polyethyleneimine and obtains paper pulp stoste；
(2) paper pulp stoste is beaten, beating degree is 32~37 ° of SR, and obtaining slurry concentration is 1.96~2.24% to be slurried, then
Normal condition online is manufactured paper with pulp, press dewatering obtains body paper ontology, and then heating keeps being placed on being placed at room temperature for；
(3) thermosetting phenolic resin, methanol, isopropyl acetate, styrene-acrylic emulsion and nano silicon nitride silica aerogel are placed in reaction kettle
In be uniformly mixed at 70~80 DEG C, be added fire retardant after continue be uniformly mixed obtain dipping glue；
(4) body paper ontology is placed on solidification filter paper apparatus for coating, dipping glue is uniformly coated on to the single side of body paper ontology, is applied
Sizing material is the 10~13wt% of this weight of body paper, then is placed in 140~150 DEG C of 6~8min that are heating and curing and obtains single side and apply and solidify filter
Paper.
As a preference of the present invention, heating temperature is 170~180 DEG C in step (2), 60~90min of retention time.
Single side of the invention applies solidification filter paper preparation method on the basis of existing processes, targetedly first by body paper ontology
Material is mixed with beating, and compared with being individually beaten compound wood pulp liquid and compounding material is then added, is conducive to slurries and is uniformly mixed, together
When polyetherimide powder etc. can sufficiently be contacted with the inierpeneirating network structure in compound wood pulp liquid, and it is tight in pulping process
Lattice control beating degree, keep the integrality of interpenetrating networks.Obtained body paper ontology is heated at 170~180 DEG C, on the one hand will
Lignin conversion in wood pulp liquid promotes hydrotalcite, polyethyleneimine etc. to play i.e. the filling of the hole of generation at flowable state
When reinforcing effect, and the part glue component in immersing glue process is promoted to immerse, enhances the intensity and use process of body paper ontology
On the other hand heat resistance is released the free water of polyaluminium sulfate and hydrotalcite layers, enhance the stemness of body paper ontology
Intensity.Then it takes out and is heating and curing after body paper ontology being impregnated in dipping solution.Resulting solidification filter paper by the method for the invention
The spread of rubber shoe latex layer reduce, solidify the permeability enhancing of filter paper, and more importantly enhance and solidify the resistance to of filter paper
It is hot, while the sour treatment process of wood pulp is omitted in preparation method, step is few, and process is succinct, is more easier to operate.
Beneficial effects of the present invention are as follows:
Single side of the invention apply solidify filter paper filtration resistance it is small, and maintain stronger anti-flammability, heat resisting with
And filter paper intensity, and the intensity of filter paper and filtering accuracy are high, and preparation method province step is few, and process is succinct, it is more easier to operate,
The filter core that gained solidifies the filter that filter paper is suitable as engine uses.
Specific embodiment
A specific embodiment of the invention is described further below.
Unless otherwise instructed, raw material employed in the present invention is commercially available or commonly used in the art, such as
Without special instruction, the method in following embodiments is used in the conventional method of this field, wherein following example and comparative example
Defoaming agent is butanol, waterproofing agent is melamine resin, dispersing agent is Ashless butyl diimide dispersant, brightening agent is that fluorescence increases
White dose 85；Solidification filter paper apparatus for coating used is that single side disclosed in patent CN204626162U applies solidification filter paper apparatus for coating.
Embodiment 1
A kind of single side painting solidification filter paper is made by being heating and curing after the one side coating dipping glue of body paper ontology, in which:
Body paper ontology is made of following component: compound wood pulp liquid 100g, PPTA staple fiber 30g, polyetherimide powder 16g, gathering
Aziridine 2g, expanding material 4g, waterproofing agent 2g, dispersing agent 5g, defoaming agent 2g, brightening agent 0.2g, expanding material are methacrylic acid
The mixture of ethyl ester and pyridine 1:0.4 in mass ratio composition；
Dipping glue is made of following component: thermosetting phenolic resin 100g, styrene-acrylic emulsion 20g, nano silicon nitride silica aerogel
15g, fire retardant 20g, zirconium class coupling agent 1g, calcium stearate 1g, methanol 250g, isopropyl acetate 20g, fire retardant is melamine
Polyphosphate, poly- methyltriethoxysilane and the polyaluminium sulfate compound of 3:1:1 in mass ratio；
PPTA staple fiber used is prepared through following procedure: poly(p-phenylene terephthalamide) being dissolved in the concentrated sulfuric acid, perfluor silicon is added
Oil, ethoxylated dodecyl alcohol be uniformly mixed, poly(p-phenylene terephthalamide) and perfluor silicone oil, ethoxylated dodecyl alcohol
Mass ratio is 1:0.2:0.01, and PPTA fiber then is made through conventional dry-jet wet spinning process, then cuts to obtain length to be 600 μm
PPTA staple fiber；
Compound slurry used is made through following procedure: mercerization wood pulp and softwood pulp 2:1 in mass ratio are mixed to obtain mixing slurry
Liquid, wood pulp concentration are 54wt%, and aluminum sulfate solution is added and aluminum stearate dissolution is uniformly mixed, adjusts the pH value of slurries to 3, adds
Heat is slowly added to calcium hydroxide emulsion to 75 DEG C under 80r/min stirring condition, the quality of aluminum sulfate is mixed serum quality
The molar ratio of 13wt%, aluminum stearate, calcium hydroxide and aluminum sulfate are 0.15:1.5:1, add titanate esters after addition rapidly
Coupling agent, nano hydrotalcite powder, the mass ratio of nano talc, titanium esters acid coupling agent and aluminum sulfate are 0.28:0.01:1, after
Continuous stirring 90min, stands to obtain compound wood pulp liquid；
Each partial size X range of polyetherimide powder are as follows: 5≤X < 10 μm, 10 < X≤18 μm, 18 < X≤24 μm, 24 < X≤30 μm,
The mass ratio of each partial size are as follows: 0.1:1:0.3:0.6；
The above-mentioned fire-retardant preparation method for solidifying filter paper, which comprises the following steps:
(1) dispersing agent, polyester staple fiber, defoaming agent, waterproofing agent and increase-volume are sequentially added under stirring condition into compound wood pulp liquid
Agent is uniformly mixed, and polyetherimide powder mixing is then added, adds polyethyleneimine and obtains paper pulp stoste；
(2) paper pulp stoste is beaten, beating degree is 32 ° of SR, and obtaining slurry concentration is being slurried for 1.96wt%, then normal condition
Online is manufactured paper with pulp, press dewatering obtains body paper ontology, and then 170 DEG C of heating holding 90min, which are placed on, is placed at room temperature for；
(3) thermosetting phenolic resin, methanol, isopropyl acetate, styrene-acrylic emulsion and nano silicon nitride silica aerogel are placed in reaction kettle
In be uniformly mixed at 70 DEG C, be added fire retardant after continue be uniformly mixed obtain dipping glue；
(4) body paper ontology is placed on solidification filter paper apparatus for coating, dipping glue is uniformly coated on to the single side of body paper ontology, is applied
Sizing material is the 10wt% of this weight of body paper, then is placed in 140 DEG C of 8min that are heating and curing and obtains single side and apply and solidify filter paper.
Embodiment 2
A kind of single side painting solidification filter paper is made, with embodiment 1 by being heating and curing after the one side coating dipping glue of body paper ontology
The difference is that compound wood pulp liquid used is that mercerization wood pulp and softwood pulp 2:1 in mass ratio mix to obtain mixed serum, wood
Slurry concentration is 54wt%.
Embodiment 3
A kind of single side painting solidification filter paper is made, with embodiment 1 by being heating and curing after the one side coating dipping glue of body paper ontology
The difference is that PPTA staple fiber used is the poly(p-phenylene terephthalamide) staple fiber of commercially available non-modified processing.
Embodiment 4
A kind of single side painting solidification filter paper is made, with embodiment 1 by being heating and curing after the one side coating dipping glue of body paper ontology
The difference is that the particle size range of polyetherimide powder used are as follows: 5≤X < 10 μm.
Embodiment 5
A kind of single side painting solidification filter paper is made, with embodiment 1 by being heating and curing after the one side coating dipping glue of body paper ontology
The difference is that in the preparation process of body paper ontology, body paper ontology obtained by step (2) is straight when not heating holding
It connects and is impregnated in maceration extract, take out 150 DEG C of 8min that are heating and curing.
Embodiment 6
A kind of single side painting solidification filter paper is made by being heating and curing after the one side coating dipping glue of body paper ontology, in which:
Body paper ontology is made of following component: compound wood pulp liquid 110g, PPTA staple fiber 40g, polyetherimide powder 20g, gathering
Aziridine 4g, expanding material 5g, waterproofing agent 3g, dispersing agent 7g, defoaming agent 4g, brightening agent 0.3g, expanding material are methacrylic acid
The mixture of ethyl ester and pyridine 1:0.5 in mass ratio composition；
Dipping glue is made of following component: thermosetting phenolic resin 110g, styrene-acrylic emulsion 25g, nano silicon nitride silica aerogel
20g, fire retardant 24g, zirconium class coupling agent 2g, calcium stearate 2g, methanol 280g, isopropyl acetate 25g, fire retardant is melamine
Polyphosphate, poly- methyltriethoxysilane and the polyaluminium sulfate compound of 4:1:1 in mass ratio；
PPTA staple fiber used is prepared through following procedure: poly(p-phenylene terephthalamide) being dissolved in the concentrated sulfuric acid, perfluor silicon is added
Oil, ethoxylated dodecyl alcohol be uniformly mixed, poly(p-phenylene terephthalamide) and perfluor silicone oil, ethoxylated dodecyl alcohol
Mass ratio is 1:0.3:0.02, and PPTA fiber then is made through conventional dry-jet wet spinning process, then cuts to obtain length to be 800 μm
PPTA staple fiber；
Compound slurry used is made through following procedure: mercerization wood pulp and softwood pulp 2.9:1 in mass ratio are mixed to obtain mixing
Slurries, wood pulp concentration are 58wt%, and aluminum sulfate solution is added and aluminum stearate dissolution is uniformly mixed, and adjust the pH value of slurries to 4,
80 DEG C are heated to, calcium hydroxide emulsion is slowly added under 60r/min stirring condition, the quality of the aluminum sulfate of addition is mixed serum
The molar ratio of the 10wt% of quality, aluminum stearate, calcium hydroxide and aluminum sulfate are 0.18:1.9:1, are added rapidly after addition
The mass ratio of titanate coupling agent, nano hydrotalcite powder, nano talc, titanium esters acid coupling agent and aluminum sulfate is 0.32:
0.02:1 continues to stir 100min, stands to obtain compound wood pulp liquid；
Each partial size X range of polyetherimide powder are as follows: 5≤X < 10 μm, 10 < X≤18 μm, 18 < X≤24 μm, 24 < X≤30 μm,
The mass ratio of each partial size are as follows: 0.2:1:0.5:0.8；
The above-mentioned fire-retardant preparation method for solidifying filter paper, which comprises the following steps:
(1) dispersing agent, polyester staple fiber, defoaming agent, waterproofing agent and increase-volume are sequentially added under stirring condition into compound wood pulp liquid
Agent is uniformly mixed, and polyetherimide powder mixing is then added, adds polyethyleneimine and obtains paper pulp stoste；
(2) paper pulp stoste is beaten, beating degree is 35 ° of SR, and obtaining slurry concentration is being slurried for 2.02wt%, then normal condition
Online is manufactured paper with pulp, press dewatering obtains body paper ontology, and then 175 DEG C of heating holding 80min, which are placed on, is placed at room temperature for；
(3) thermosetting phenolic resin, methanol, isopropyl acetate, styrene-acrylic emulsion and nano silicon nitride silica aerogel are placed in reaction kettle
In be uniformly mixed at 15 DEG C, be added fire retardant after continue be uniformly mixed obtain dipping glue；
(4) body paper ontology is placed on solidification filter paper apparatus for coating, dipping glue is uniformly coated on to the single side of body paper ontology, is applied
Sizing material is the 12wt% of this weight of body paper, then is placed in 150 DEG C of 6min that are heating and curing and obtains single side and apply and solidify filter paper.
Embodiment 7
A kind of single side painting solidification filter paper is made by being heating and curing after the one side coating dipping glue of body paper ontology, in which:
Body paper ontology is made of following component: compound wood pulp liquid 120g, PPTA staple fiber 40g, polyetherimide powder 22g, gathering
Aziridine 5g, expanding material 7g, waterproofing agent 4g, dispersing agent 8g, defoaming agent 5g, brightening agent 0.5g, expanding material are methacrylic acid
The mixture of ethyl ester and pyridine 1:0.6 in mass ratio composition；
Dipping glue is made of following component: thermosetting phenolic resin 120g, styrene-acrylic emulsion 30g, nano silicon nitride silica aerogel
25g, fire retardant 26g, zirconium class coupling agent 3g, calcium stearate 3g, methanol 300g, isopropyl acetate 30g, fire retardant is melamine
Polyphosphate, poly- methyltriethoxysilane and the polyaluminium sulfate compound of 3:2:1 in mass ratio；
PPTA staple fiber used is prepared through following procedure: poly(p-phenylene terephthalamide) being dissolved in the concentrated sulfuric acid, perfluor silicon is added
Oil, ethoxylated dodecyl alcohol are uniformly mixed, poly(p-phenylene terephthalamide) and perfluor silicone oil, ethoxylated dodecyl alcohol
Mass ratio be 1:0.4:0.03, PPTA fiber then is made through conventional dry-jet wet spinning process, then cut to obtain length be
1000 μm of PPTA staple fiber；
Compound slurry used is made through following procedure: mercerization wood pulp and softwood pulp 3.8:1 in mass ratio are mixed to obtain mixing
Slurries, wood pulp concentration are 62wt%, and aluminum sulfate solution is added and aluminum stearate dissolution is uniformly mixed, and adjust the pH value of slurries to 4,
80 DEG C are heated to, calcium hydroxide emulsion is slowly added under 60r/min stirring condition, the quality of aluminum sulfate is mixed serum quality
13wt%, the molar ratio of aluminum stearate, calcium hydroxide and aluminum sulfate are 0.2:2:1, add titanate esters idol after addition rapidly
Join agent, nano hydrotalcite powder, the mass ratio of nano talc, titanium esters acid coupling agent and aluminum sulfate is 0.45:0.01:1, is continued
120min is stirred, compound wood pulp liquid is stood to obtain；
Each partial size X range of polyetherimide powder are as follows: 5≤X < 10 μm, 10 < X≤18 μm, 18 < X≤24 μm, 24 < X≤30 μm,
The mass ratio of each partial size are as follows: 0.2:1:0.5:0.8；
The above-mentioned fire-retardant preparation method for solidifying filter paper, which comprises the following steps:
(1) dispersing agent, polyester staple fiber, defoaming agent, waterproofing agent and increase-volume are sequentially added under stirring condition into compound wood pulp liquid
Agent is uniformly mixed, and polyetherimide powder mixing is then added, adds polyethyleneimine and obtains paper pulp stoste；
(2) paper pulp stoste is beaten, beating degree is 37 ° of SR, and obtaining slurry concentration is being slurried for 2.24wt%, then normal condition
Online is manufactured paper with pulp, press dewatering obtains body paper ontology, and then 180 DEG C of heating holding 60min, which are placed on, is placed at room temperature for；
(3) thermosetting phenolic resin, methanol, isopropyl acetate, styrene-acrylic emulsion and nano silicon nitride silica aerogel are placed in reaction kettle
In be uniformly mixed at 80 DEG C, be added fire retardant after continue be uniformly mixed obtain dipping glue；
(4) body paper ontology is placed on solidification filter paper apparatus for coating, dipping glue is uniformly coated on to the single side of body paper ontology, is applied
Sizing material is the 13wt% of this weight of body paper, then is placed in 150 DEG C of 6min that are heating and curing and obtains single side and apply and solidify filter paper.
Comparative example 1
It is prepared according to the method for embodiment 1 with raw material, difference from example 1 is that, the compound wood pulp liquid in raw material is
To polyaluminium sulfate is directly added in the mixed slurry of mercerization wood pulp and softwood pulp, additional amount is mixed serum quality
18wt%.
Comparative example 2
It is prepared according to the method for embodiment 1 with raw material, difference from example 1 is that, in the preparation process of body paper ontology
In, compound wood pulp liquid is beaten by the method for step (2) first, is then added in step (1) into the compound wood pulp liquid after mashing
Paper pulp stoste is obtained after raw material mixing in addition to compound wood pulp liquid, then manufactured paper with pulp, squeezed and obtain body paper ontology.
Comparative example 3
It is prepared according to the method for embodiment 1 with raw material, difference from example 1 is that, in the configuration process of maceration extract,
Fire retardant used is the Melamine Polyphosphate of equivalent.
Comparative example 4
Embodiment 1 in patent CN104831586B.
Solidify the performance indicators such as intensity, the air permeability of filter paper and referring to GB/ obtained by the various embodiments described above and comparative example
The results are shown in Table 1 for the flame retardant property index of T14656-2009 " fire retardant papers and cardboard combustibility test method " measurement,
When middle test bursting strength and stiffness, by it is to be tested solidify filter paper be first placed in 180 DEG C of baking oven keep the temperature 60min after re-test.
1 test result of table
Claims (10)
1. a kind of single side applies solidification filter paper, which is characterized in that the single side applies the one side coating leaching for solidifying filter paper by body paper ontology
It is heating and curing and is made after stain glue, in which:
Body paper ontology is made of the components of following parts: 100~120 parts of compound wood pulp liquid, gathers at 30~40 parts of PPTA staple fiber
16~22 parts of etherimide powder, 2~5 parts of polyethyleneimine, 4~7 parts of expanding material, 2~4 parts of waterproofing agent, 5~8 parts of dispersing agent,
2~5 parts of defoaming agent, 0.2~0.5 part of brightening agent, the compound wood pulp liquid are the mixture of mercerization wood pulp and softwood pulp；
Dipping glue be made of the components of following parts: 100~120 parts of thermosetting phenolic resin, 20~30 parts of styrene-acrylic emulsion,
15~25 parts of nano silicon nitride silica aerogel, 20~26 parts of fire retardant, 1~3 part of zirconium class coupling agent, 1~3 part of calcium stearate, methanol
250~300 parts, 20~30 parts of isopropyl acetate.
2. single side according to claim 1 applies solidification filter paper, which is characterized in that the PPTA staple fiber is through following procedure system
It is standby: poly(p-phenylene terephthalamide) to be dissolved in the concentrated sulfuric acid, addition perfluor silicone oil, ethoxylated dodecyl alcohol are uniformly mixed, so
PPTA fiber is made by conventional dry-jet wet spinning process, cutting obtains the PPTA staple fiber that length is 600~1000 μm.
3. single side according to claim 2 applies solidification filter paper, which is characterized in that poly(p-phenylene terephthalamide) and perfluor
Silicone oil, ethoxylated dodecyl alcohol mass ratio be 1:0.2~0.4:0.01~0.03.
4. single side according to claim 1 applies solidification filter paper, which is characterized in that the compound slurry is through following procedure system
At: mercerization wood pulp and softwood pulp 2~3.8:1 in mass ratio are mixed into obtain mixed serum, wood pulp concentration is 54~62wt%,
Aluminum sulfate solution is added and aluminum stearate dissolution is uniformly mixed, adjusts the pH value of slurries to 3~4, is heated to 75~80 DEG C, 60~
It is slowly added to calcium hydroxide emulsion under 80r/min stirring condition, adds titanate coupling agent, nanometer neatly after addition rapidly
Stone powder continues 90~120min of stirring, stands to obtain compound wood pulp liquid.
5. single side according to claim 4 applies solidification filter paper, which is characterized in that the quality of the aluminum sulfate of addition is mixing slurry
8~13wt% of liquid quality, the molar ratio of aluminum stearate, calcium hydroxide and aluminum sulfate are 0.15~0.2:1.5~2:1, and nanometer is sliding
The mass ratio of mountain flour, titanium esters acid coupling agent and aluminum sulfate is 0.28~0.45:0.01~0.02:1.
6. single side according to claim 1 or 2 or 4 applies solidification filter paper, which is characterized in that each grain of polyetherimide powder
Diameter X range are as follows: 5≤X < 10 μm, 10 < X≤18 μm, 18 < X≤24 μm, 24 < X≤30 μm, the mass ratio of each partial size are as follows: 0.1~
0.2:1:0.3~0.5:0.6~0.8.
7. according to claim 1 or 2 or 4 single side apply solidification filter paper, which is characterized in that expanding material is ethyl methacrylate
With the mixture of pyridine 1:0.4 in mass ratio~0.6 composition.
8. single side according to claim 1 applies solidification filter paper, which is characterized in that the fire retardant is melamine poly phosphorus
The compound of hydrochlorate, poly- methyltriethoxysilane and polyaluminium sulfate, the mass ratio of three are followed successively by 3~4:1~2:1.
9. the fire-retardant preparation method for solidifying filter paper as described in any of the claims 1 to 8, which comprises the following steps:
(1) dispersing agent, polyester staple fiber, defoaming agent, waterproofing agent and increase-volume are sequentially added under stirring condition into compound wood pulp liquid
Agent is uniformly mixed, and polyetherimide powder mixing is then added, adds polyethyleneimine and obtains paper pulp stoste；
(2) paper pulp stoste is beaten, beating degree is 32~37 ° of SR, and obtaining slurry concentration is being slurried for 1.96~2.24wt%, so
Normal condition online is manufactured paper with pulp afterwards, press dewatering obtains body paper ontology, and then heating keeps being placed on being placed at room temperature for；
(3) thermosetting phenolic resin, methanol, isopropyl acetate, styrene-acrylic emulsion and nano silicon nitride silica aerogel are placed in reaction kettle
In be uniformly mixed at 70~80 DEG C, be added fire retardant after continue be uniformly mixed obtain dipping glue；
(4) body paper ontology is placed on solidification filter paper apparatus for coating, dipping glue is uniformly coated on to the single side of body paper ontology, is applied
Sizing material is the 10~13wt% of this weight of body paper, then is placed in 140~150 DEG C of 6~8min that are heating and curing and obtains single side and apply and solidify filter
Paper.
10. the fire-retardant preparation method for solidifying filter paper according to claim 8, which is characterized in that heating temperature in step (2)
It is 170~180 DEG C, 60~90min of retention time.
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| CN114197246A (en) * | 2021-12-21 | 2022-03-18 | 东莞市科纳新材料有限公司 | Base paper for printing, preparation method thereof and decorative paper |
| CN114395935A (en) * | 2021-12-28 | 2022-04-26 | 山东龙德复合材料科技股份有限公司 | Nano air filter paper and preparation method thereof |
| CN114687249A (en) * | 2022-04-15 | 2022-07-01 | 江南大学 | Thermosetting filter paper for internal combustion engine and preparation method thereof |
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