CN106192582A - Middling speed quantitative filter paper and preparation method thereof - Google Patents

Middling speed quantitative filter paper and preparation method thereof Download PDF

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Publication number
CN106192582A
CN106192582A CN201610519953.8A CN201610519953A CN106192582A CN 106192582 A CN106192582 A CN 106192582A CN 201610519953 A CN201610519953 A CN 201610519953A CN 106192582 A CN106192582 A CN 106192582A
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Prior art keywords
slurry
pulp
oar
filter paper
surface layer
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CN201610519953.8A
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吴安波
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Hangzhou Special Paper Industry Co Ltd
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Hangzhou Special Paper Industry Co Ltd
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Priority to CN201610519953.8A priority Critical patent/CN106192582A/en
Publication of CN106192582A publication Critical patent/CN106192582A/en
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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/04—Organic material, e.g. cellulose, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • 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
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The present invention provides a kind of middling speed quantitative filter paper, is three-decker from the face that flows to of filter paper to effluent face, and the intermediate layer of described three-decker is counted by weight, including 20 40 parts of softwood pulps and the hardwood pulp of 20 40 parts；The described surface layer that flows to is counted by weight, including 20 40 parts of softwood pulps, the cotton of short staple oar of 30 80 parts and 20 40 parts of Herba Poae Sphondylodis slurries, described outflow surface layer is counted by weight, including 20 40 parts of hardwood pulps, 20 40 parts of Herba Poae Sphondylodis slurries of cotton of short staple oar of 30 80 parts；Described softwood pulp, hardwood pulp, cotton of short staple oar, Herba Poae Sphondylodis slurry soak with Fluohydric acid. and hydrochloric acid mixed solution respectively, then neutralize through alkali, finally clean obtain with the exchanged pure water of ion or distilled water.This middling speed quantitative filter paper filter paper has the filtration feature that absorbent properties are good, length in service life, wet strength are good, compressive strength is high.

Description

Middling speed quantitative filter paper and preparation method thereof
Technical field
The present invention relates to filter paper technical field, be specifically related to a kind of middling speed quantitative filter paper and preparation method thereof.
Background technology
Quantitative filter paper, namely quantitative analysis filter paper, after calcination, residual ash is little, and analysis result is nearly free from shadow Ring, be suitable to make precise quantitative analysis；The amount of ash is produced less than 0.0009% after ashing.But existing quantitative filter paper uses single The wood pulp of one is as raw material, for this Single Fiber material, in order to improve filtering accuracy will reduced bore, thus can increase Filtration resistance, shortens physical life；In order to reduce filtration resistance, increase the service life it is necessary to hole diameter enlargement, but can reduce Filter precision, so being difficult to the regulation by microscopic void to balance the performance parameter such as filtering accuracy and filtration resistance；Additionally such The poor water resistance of quantitative filter paper, it is run-down that the filtration through the short time is just easily caused paper.
Summary of the invention
For the deficiencies in the prior art, the present invention provides and a kind of filters that absorbent properties are good, length in service life, water-tolerant, The middling speed quantitative filter paper that compressive strength is high, the rate of filtration is fast, present invention also offers the preparation method of this middling speed quantitative filter paper.
For realizing goal of the invention, the technical scheme that the present invention takes is:
Middling speed quantitative filter paper, is three-decker from the face that flows to of filter paper to effluent face, the intermediate layer of described three-decker Count by weight, including 20-40 part softwood pulp and the hardwood pulp of 20-40 part；Described flows to surface layer by weight Meter, starches including 20-40 part softwood pulp, the cotton of short staple oar of 30-80 part and 20-40 part Herba Poae Sphondylodis, and described outflow surface layer is by weight Amount number meter, the cotton of short staple oar 20-40 part Herba Poae Sphondylodis including 20-40 part hardwood pulp, 30-80 part is starched；Described softwood pulp, Hardwood pulp, cotton of short staple oar, Herba Poae Sphondylodis slurry soak with Fluohydric acid. and hydrochloric acid mixed solution respectively, then neutralize through alkali, finally use ion Exchanged pure water or distilled water are cleaned and are obtained.
As preferably, the described alpha-cellulose content in middling speed quantitative filter paper is 98%-99%.
As preferably, the most quantification of 80 ± 4.0g/m2, flow to the quantification of 30 ± 2g/m of surface layer2, intermediate layer is 20 ± 1g/ m2, outflow surface layer is 30 ± 2g/m2。
The invention still further relates to the processing technology of above-mentioned middling speed quantitative filter paper, the technological means taked is:
The preparation method of a kind of middling speed quantitative filter paper, comprises the steps:
1) by described softwood pulp, hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry respectively by Fluohydric acid. and mixed in hydrochloric acid Immersion is steeped, then neutralizes through alkali, finally cleans with the exchanged pure water of ion or distilled water and obtains slurry；
2) preparation flows to surface layer, softwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine is carried out by dosage Discongesting, then polish online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR, and slurry is placed in many laminar flows One layer in oar case is shaped by forming net drainage, obtains flowing to surface layer；
3) preparing intermediate layer slurry, softwood pulp and hardwood pulp defiberizing machine by dosage are discongested, then Polishing online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR；
4) surface layer slurry is flowed out in preparation, enters by dosage hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine Row is discongested, then polishes online through double disc refiner and obtain pulp, and slurry degree is 14-19 ° of SR；
5) by step 3) the intermediate layer slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly Entering and flow to surface layer and carry out liquid-solid composite, then drainage and formation obtains two-layer composite bed；
6) by step 4) the effluent face slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly The two-layer composite bed entering drying carries out liquid-solid composite, and then drainage and formation obtains three layers of composite bed, is dried.
The layer being obtained fiber filter paper by the method does not has obvious interface, layer to be to twine completely with the fiber of interlayer with interlayer Around weave in, being even difficult to define the position of each layer, whole fiber filter paper is a structure completed.The intensity of paper by Many factors determines, most important factor is fibrous binding force, and in fibrous binding force, Hydrogen bonding forces plays very important Effect, the filter paper obtained by the method, layer and interlayer more likely by even level hydrone and fiber formed fiber-water- The loosely connected hydrogen bonded of fiber, this Hydrogen bonding forces layer combines with fiber with the fiber of interlayer, make layer with Interlayer has intensity, so that the intensity enhancing of whole fiber filter paper, all controls the beating degree of three layers at 14-19 ° simultaneously SR, it is ensured that the pore size control of whole middling speed quantitative filter paper, at 30～50 microns, meets often filtration 100 milliliters and is not more than 60 seconds Requirement.
Detailed description of the invention
The invention is further illustrated by the following examples, but the present invention is not limited solely to following example.
Embodiment 1
Middling speed quantitative filter paper, is three-decker from the face that flows to of filter paper to effluent face, the intermediate layer of described three-decker Count by weight, including 20 parts of softwood pulps and the hardwood pulp of 40 parts；The described surface layer that flows to is counted by weight, including 20 parts of softwood pulps, the cotton of short staple oar of 30 parts and 20 parts of Herba Poae Sphondylodis slurries, described outflow surface layer is counted by weight, including 20 parts Hardwood pulp, the cotton of short staple oar of 30 parts and 20 parts of Herba Poae Sphondylodis slurries；Described softwood pulp, hardwood pulp, cotton of short staple oar and dragon palpus Straw pulp soaks with Fluohydric acid. and hydrochloric acid mixed solution respectively, then neutralizes through alkali, finally with the exchanged pure water of ion or distillation washing Clean acquisition, the described alpha-cellulose content in middling speed quantitative filter paper is 98%
The most quantification of 80 ± 4.0g/m2, flow to the quantification of 30 ± 2g/m of surface layer2, intermediate layer is 20 ± 1g/m2, flow out surface layer It is 30 ± 2g/m2。
The invention still further relates to the processing technology of above-mentioned middling speed quantitative filter paper, the technological means taked is:
The preparation method of a kind of middling speed quantitative filter paper, comprises the steps:
1) by described softwood pulp, hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry respectively by Fluohydric acid. and mixed in hydrochloric acid Immersion is steeped, then neutralizes through alkali, finally cleans with the exchanged pure water of ion or distilled water and obtains slurry；
2) preparation flows to surface layer, softwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine is carried out by dosage Discongesting, then polish online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR, and slurry is placed in many laminar flows One layer in oar case is shaped by forming net drainage, obtains flowing to surface layer；
3) prepare intermediate layer slurry, discongest by the softwood pulp of dosage, hardwood pulp defiberizing machine, then warp Crossing double disc refiner to polish online and obtain pulp, slurry degree is 14-19 ° of SR；
4) surface layer slurry is flowed out in preparation, enters by dosage hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine Row is discongested, then polishes online through double disc refiner and obtain pulp, and slurry degree is 14-19 ° of SR；
5) by step 3) the intermediate layer slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly Entering and flow to surface layer and carry out liquid-solid composite, then drainage and formation obtains two-layer composite bed；
6) by step 4) the effluent face slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly The two-layer composite bed entering drying carries out liquid-solid composite, and then drainage and formation obtains three layers of composite bed, is dried.
Embodiment 2
Middling speed quantitative filter paper, is three-decker from the face that flows to of filter paper to effluent face, the intermediate layer of described three-decker Count by weight, including 40 parts of softwood pulps, the hardwood pulp of 20 parts and 30 parts of bamboo pulps；Described flows to surface layer by weight Number meter, including 40 parts of softwood pulps, the cotton of short staple oar of 80 parts and 40 parts of Herba Poae Sphondylodis slurries, described outflow surface layer is by weight Meter, including 40 parts of hardwood pulps, the cotton of short staple oar of 30 parts and 40 parts of Herba Poae Sphondylodis slurries；Described softwood pulp, hardwood pulp, short flannel Cotton oar and Herba Poae Sphondylodis slurry soak with Fluohydric acid. and hydrochloric acid mixed solution respectively, then neutralize through alkali, finally with the pure water that ion is exchanged Or the clean acquisition of distilled water, the described alpha-cellulose content in middling speed quantitative filter paper is 99%.
As preferably, the most quantification of 80 ± 4.0g/m2, flow to the quantification of 30 ± 2g/m of surface layer2, intermediate layer is 20 ± 1g/ m2, outflow surface layer is 30 ± 2g/m2。
The invention still further relates to the processing technology of above-mentioned middling speed quantitative filter paper, the technological means taked is:
The preparation method of a kind of middling speed quantitative filter paper, comprises the steps:
1) by described softwood pulp, hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry respectively by Fluohydric acid. and mixed in hydrochloric acid Immersion is steeped, then neutralizes through alkali, finally cleans with the exchanged pure water of ion or distilled water and obtains slurry；
2) preparation flows to surface layer, softwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine is carried out by dosage Discongesting, then polish online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR, and slurry is placed in many laminar flows One layer in oar case is shaped by forming net drainage, obtains flowing to surface layer；
3) prepare intermediate layer slurry, discongest by the softwood pulp of dosage, hardwood pulp defiberizing machine, then warp Crossing double disc refiner to polish online and obtain pulp, slurry degree is 14-19 ° of SR；
4) surface layer slurry is flowed out in preparation, enters by dosage hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine Row is discongested, then polishes online through double disc refiner and obtain pulp, and slurry degree is 14-19 ° of SR；
5) by step 3) the intermediate layer slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly Entering and flow to surface layer and carry out liquid-solid composite, then drainage and formation obtains two-layer composite bed；
6) by step 4) the effluent face slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly The two-layer composite bed entering drying carries out liquid-solid composite, and then drainage and formation obtains three layers of composite bed, is dried.
Embodiment 3
Middling speed quantitative filter paper, is three-decker from the face that flows to of filter paper to effluent face, the intermediate layer of described three-decker Count by weight, including 30 parts of softwood pulps, the hardwood pulp of 20 parts；The described surface layer that flows to is counted by weight, including 30 parts of softwood pulps, the cotton of short staple oar of 60 parts and 35 parts of Herba Poae Sphondylodis slurries, described outflow surface layer is counted by weight, including 40 parts Hardwood pulp, the cotton of short staple oar of 50 parts and 30 parts of Herba Poae Sphondylodis slurries；Described softwood pulp, hardwood pulp, cotton of short staple oar and dragon palpus Straw pulp soaks with Fluohydric acid. and hydrochloric acid mixed solution respectively, then neutralizes through alkali, finally with the exchanged pure water of ion or distillation washing Clean acquisition, the described alpha-cellulose content in middling speed quantitative filter paper is 98.5%.
As preferably, the most quantification of 80 ± 4.0g/m2, flow to the quantification of 30 ± 2g/m of surface layer2, intermediate layer is 20 ± 1g/ m2, outflow surface layer is 30 ± 2g/m2。
The invention still further relates to the processing technology of above-mentioned middling speed quantitative filter paper, the technological means taked is:
The preparation method of a kind of middling speed quantitative filter paper, comprises the steps:
1) by described softwood pulp, hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry respectively by Fluohydric acid. and mixed in hydrochloric acid Immersion is steeped, then neutralizes through alkali, finally cleans with the exchanged pure water of ion or distilled water and obtains slurry；
2) preparation flows to surface layer, softwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine is carried out by dosage Discongesting, then polish online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR, and slurry is placed in many laminar flows One layer in oar case is shaped by forming net drainage, obtains flowing to surface layer；
3) prepare intermediate layer slurry, discongest by the softwood pulp of dosage, hardwood pulp defiberizing machine, then warp Crossing double disc refiner to polish online and obtain pulp, slurry degree is 14-19 ° of SR；
4) surface layer slurry is flowed out in preparation, enters by dosage hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine Row is discongested, then polishes online through double disc refiner and obtain pulp, and slurry degree is 14-19 ° of SR；
5) by step 3) the intermediate layer slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly Entering and flow to surface layer and carry out liquid-solid composite, then drainage and formation obtains two-layer composite bed；
6) by step 4) the effluent face slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry stream slowly The two-layer composite bed entering drying carries out liquid-solid composite, and then drainage and formation obtains three layers of composite bed, is dried.
The middling speed quantitative filter paper technical specification that above-described embodiment prepares is as shown in the table:

Claims (4)

1. middling speed quantitative filter paper, it is characterised in that be three-decker from the face that flows to of filter paper to effluent face, described three-decker Intermediate layer count by weight, including 20-40 part softwood pulp and the hardwood pulp of 20-40 part；Described flow to surface layer by Parts by weight meter, starches including 20-40 part softwood pulp, the cotton of short staple oar of 30-80 part and 20-40 part Herba Poae Sphondylodis, described outflow Surface layer is counted by weight, and the cotton of short staple oar 20-40 part Herba Poae Sphondylodis including 20-40 part hardwood pulp, 30-80 part is starched；Described Softwood pulp, hardwood pulp, cotton of short staple oar, Herba Poae Sphondylodis slurry soak with Fluohydric acid. and hydrochloric acid mixed solution respectively, then neutralize through alkali, Use ion is exchanged afterwards pure water or distilled water are cleaned and are obtained.
Middling speed quantitative filter paper the most according to claim 1, it is characterised in that the described alpha fibre in middling speed quantitative filter paper Cellulose content is 98%-99%.
Middling speed quantitative filter paper the most according to claim 1, it is characterised in that the most quantification of 80 ± 4.0g/m2, flow to surface layer fixed Amount is 30 ± 2g/m2, intermediate layer is 20 ± 1g/m2, outflow surface layer is 30 ± 2g/m2。
4. the preparation method of the middling speed quantitative filter paper as described in claims 1 to 3 is arbitrary, it is characterised in that include walking as follows Rapid:
1) by described softwood pulp, hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry respectively by Fluohydric acid. and mixed in hydrochloric acid immersion Bubble, then neutralize through alkali, finally clean with the exchanged pure water of ion or distilled water and obtain slurry；
2) preparation flows to surface layer, softwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine is discongested by dosage, Polishing online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR, is placed in by slurry in many laminar flows oar case One layer shaped by forming net drainage, obtain flowing to surface layer；
3) prepare intermediate layer slurry, discongest by the softwood pulp of dosage, hardwood pulp defiberizing machine, then through double Mill pulp grinder is polished online and is obtained pulp, and slurry degree is 14-19 ° of SR；
4) surface layer slurry is flowed out in preparation, dredges by dosage hardwood pulp, cotton of short staple oar and Herba Poae Sphondylodis slurry defiberizing machine Solving, then polish online through double disc refiner and obtain pulp, slurry degree is 14-19 ° of SR；
5) by step 3) the intermediate layer slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry flowing into slowly Flowing to surface layer and carry out liquid-solid composite, then drainage and formation obtains two-layer composite bed；
6) by step 4) the effluent face slurry that obtains is also placed in step 2) in many laminar flows oar case, by its slurry flowing into slowly The two-layer composite bed of drying carries out liquid-solid composite, and then drainage and formation obtains three layers of composite bed, is dried.
CN201610519953.8A 2016-06-29 2016-06-29 Middling speed quantitative filter paper and preparation method thereof Pending CN106192582A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115726221A (en) * 2022-11-22 2023-03-03 杭州特种纸业有限公司 Medium-speed quantitative filter paper and preparation method thereof
CN116377763A (en) * 2022-12-19 2023-07-04 杭州特种纸业有限公司 High-strength rapid quantitative filter paper and preparation method thereof

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Publication number Priority date Publication date Assignee Title
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CN104878642A (en) * 2015-05-04 2015-09-02 杭州特种纸业有限公司 Quantitative filter paper and preparing method and application thereof

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
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CN104878642A (en) * 2015-05-04 2015-09-02 杭州特种纸业有限公司 Quantitative filter paper and preparing method and application thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115726221A (en) * 2022-11-22 2023-03-03 杭州特种纸业有限公司 Medium-speed quantitative filter paper and preparation method thereof
CN116377763A (en) * 2022-12-19 2023-07-04 杭州特种纸业有限公司 High-strength rapid quantitative filter paper and preparation method thereof
CN116377763B (en) * 2022-12-19 2024-03-15 杭州特种纸业有限公司 High-strength rapid quantitative filter paper and preparation method thereof

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