CN111139643A - Pretreatment finishing agent for opening filter material and application thereof - Google Patents
Pretreatment finishing agent for opening filter material and application thereof Download PDFInfo
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- CN111139643A CN111139643A CN201911362529.7A CN201911362529A CN111139643A CN 111139643 A CN111139643 A CN 111139643A CN 201911362529 A CN201911362529 A CN 201911362529A CN 111139643 A CN111139643 A CN 111139643A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/165—Ethers
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G11/00—Disintegrating fibre-containing articles to obtain fibres for re-use
- D01G11/04—Opening rags to obtain fibres for re-use
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/46—Compounds containing quaternary nitrogen atoms
- D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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Abstract
The invention discloses a pretreatment finishing agent for opening filter materials, which belongs to the technical field of textile additives and is mainly prepared from the following raw materials in parts by weight: 40-60 parts of polyethylene glycol, 15-25 parts of polytetrafluoroethylene emulsion, 12-20 parts of dimethyl silicone oil emulsion, 5-8 parts of dioctadecyl dimethyl quaternary ammonium salt, 0.5-1.5 parts of potassium monododecyl phosphate and 60-130 parts of deionized water. The invention also provides application of the pretreatment finishing agent for opening the filter material in opening the filter material. The invention has the beneficial effects that: the pretreatment finishing agent prepared by the invention can reduce the force required for drawing the base fabric from the filter material, reduce the friction coefficient between fibers and between the fibers and metal, is beneficial to subsequent carding of the fibers, improves the length of the fiber main body and reduces the damage to the fibers.
Description
Technical Field
The invention relates to the technical field of textile additives, in particular to a pretreatment finishing agent for opening filter materials and application thereof.
Background
At present, bag type dust collectors are widely used in industries such as coal-fired power plants, cement plants, garbage incineration plants and the like, but the actual service life of a filter bag is about 3 years due to large difference of domestic fuels and harsh working conditions, which means that a great amount of terylene finished product filter materials are replaced every year, and the terylene finished product filter materials are reasonably recycled, so that a great amount of new fibers can be saved, and the environment protection is facilitated.
At present, the waste filter material recovery method mainly comprises a heat energy incineration power generation method, a mechanical opening method, a chemical degradation method and the like. The waste filter materials are made into regenerated fibers by a mechanical opening method and then are recycled, so that the method has the advantages of low investment and low processing cost. However, the regenerated fibers opened by the existing method have the defects of large damage, short fiber length, reduced strength and the like, and how to open the fibers with better performances such as length, strength and the like is the key research content of mechanically opening and recycling the fibers.
At present, regenerated fibers are produced by mechanical opening in China, the overall length of the opened fibers is short, and high value-added products are difficult to prepare. The base cloth in the filter material is mostly twisted and woven in a complex way, so that the difficulty of pulling the base cloth out of the filter material and the damage to fibers in a carding procedure are increased.
Disclosure of Invention
One of the technical problems to be solved by the invention is that the force for pulling the base cloth out of the filter material is large in the opening process of the filter material, the length of the opened fiber is short, and the pretreatment finishing agent for opening the filter material is provided.
The invention solves the technical problems through the following technical means:
a pretreatment finishing agent for opening filter materials is mainly prepared from the following raw materials in parts by weight: 40-60 parts of polyethylene glycol, 15-25 parts of polytetrafluoroethylene emulsion, 12-20 parts of dimethyl silicone oil emulsion, 5-8 parts of dioctadecyl dimethyl quaternary ammonium salt, 0.5-1.5 parts of potassium monododecyl phosphate and 60-130 parts of deionized water.
Has the advantages that: the pretreatment finishing agent prepared by the invention can reduce the force required for drawing the base fabric from the filter material, reduce the friction coefficient between fibers and between the fibers and metal, and the static friction coefficient is reduced to be less than 0.08 through the test of a Y151 fiber friction coefficient tester, thereby being beneficial to the subsequent carding of the fibers, improving the length of the fiber main body and reducing the damage to the fibers.
Preferably, the polytetrafluoroethylene emulsion has a solids content of 60%.
Preferably, the preparation method of the pretreatment finishing agent for opening the filter material comprises the following steps: mixing the raw materials in the weight portion, and stirring at the temperature of 60-80 ℃.
Preferably, the stirring manner is forward rotation, the forward rotation speed is less than or equal to 200rpm, the stirring time is more than or equal to 1h, forward rotation is continued for more than 30min at the rotation speed of 600 plus 800rpm, then reverse rotation is carried out, the reverse rotation speed is less than or equal to 200rpm, the stirring time is more than or equal to 1h, and reverse rotation is continued for more than 30min at the rotation speed of 600 plus 800 rpm.
Preferably, the stirring mode is forward rotation, the forward rotation speed is 150rpm, the stirring time is 2h, forward rotation is continued for 40min at the rotation speed of 800rpm, and then reverse rotation is carried out, the reverse rotation speed is 150rpm, the stirring time is 2h, and reverse rotation is continued for 40min at the rotation speed of 800 rpm.
The second technical problem to be solved by the invention is to provide an application of the pretreatment finishing agent for opening the filter material in the opening of the filter material.
The invention solves the technical problems through the following technical means:
the application of the pretreatment finishing agent for opening the filter material in opening the filter material comprises the following steps:
(1) cleaning the filter material, cutting, and soaking in the pretreatment finishing agent for more than 24 h;
(2) removing the pretreatment finishing agent on the filter material after soaking;
(3) opening the filter material without the pretreatment finishing agent twice through an opener to obtain preliminary opened fibers;
(4) carding the preliminarily opened fibers in the step (3) by a carding machine, removing impurities, loosening the fibers, and transversely paving and directly taking the fibers to obtain the fibers;
(5) and drying the obtained fibers to obtain opened fibers.
Has the advantages that: the pretreatment finishing agent is applied to opening of filter materials, the fiber length after 80% opening can be distributed between 30mm and 50mm, the fiber strength of more than 50% is distributed between 2.0 cN/dtex, the friction force between fibers and metal is reduced, the friction coefficient of the treated fibers is less than 0.08, the subsequent carding of the fibers is facilitated, the fiber main body length is increased, the damage to the fibers is reduced, and the additional value of regenerated fiber products is increased.
Preferably, the filter material is mainly made of one or more of terylene, polyphenylene sulfide, aramid fiber, acrylic fiber and polyimide fiber.
Preferably, the filter material is cut into cloth strips with the width less than or equal to 10cm, and the cloth strips are packed in the mesh grid woven bag, and the weight of each bag is not more than 5 kg.
Preferably, the pretreatment finishing agent on the filter material is removed by adopting a centrifugal mode, the centrifugal speed is 800-1000rpm, and the centrifugal time is 10-15 min.
Preferably, the drying temperature is 80-105 ℃, and the drying time is 8-24 h.
The invention has the advantages that:
(1) the pretreatment finishing agent prepared by the invention can reduce the force required for drawing the base fabric from the filter material, reduce the friction coefficient between fibers and between the fibers and metal, is beneficial to subsequent carding of the fibers, improves the length of the fiber main body and reduces the damage to the fibers;
(2) the pretreatment finishing agent is applied to opening of filter materials, the fiber length after 80% opening can be distributed between 30mm and 50mm, the fiber strength of more than 50% is distributed between 2.0 cN/dtex, the friction force between fibers and metal is reduced, the friction coefficient of the treated fibers is less than 0.08, the subsequent carding of the fibers is facilitated, the fiber main body length is increased, the damage to the fibers is reduced, and the additional value of regenerated fiber products is increased.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
Example 1
Preparing a pretreatment finishing agent for opening filter materials:
(1) mixing 40 parts by weight of polyethylene glycol (average molecular weight is 400), 15 parts by weight of polytetrafluoroethylene emulsion with solid content of 60%, 12 parts by weight of dimethyl silicone oil emulsion, 5 parts by weight of dioctadecyl dimethyl quaternary ammonium salt, 0.5 part by weight of potassium monododecyl phosphate and 130 parts by weight of deionized water; the damage of card clothing of a carding machine to fibers in the opening process is reduced through polyethylene glycol, and the filter material is fluffy and soft through the compounding of dimethyl silicone oil, dioctadecyl dimethyl quaternary ammonium salt and potassium monododecyl phosphate;
(2) stirring at 60 ℃, wherein the stirring mode is as follows: the pretreatment finishing agent is prepared by forward rotating at the forward rotating speed of 150rpm for 2h, continuously forward rotating at the rotating speed of 800rpm for 40min, then reversely rotating at the reverse rotating speed of 150rpm for 2h, continuously reversely rotating at the rotating speed of 800rpm for 40min, and stirring.
Applying the prepared pretreatment finishing agent to opening of filter materials:
(1) cutting the cleaned terylene finished product filter material into cloth strips with the width of 5cm, packaging the cloth strips in a mesh grid woven bag (the size of the grid is 30mm x 30mm), wherein each bag is 4kg in weight and is completely soaked in an opening pretreatment finishing agent for 36 hours;
(2) after soaking, removing the opening pretreatment finishing agent on the filter material by a centrifugal method, wherein the rotating speed is 800rpm, and the time is 15 min;
(3) opening the filter material subjected to centrifugal drying for 2 times by an opener to obtain preliminary opened fibers, wherein the angular nail curtain speed of the opener is 12 m/min;
(4) the carding machine is used for carding fibers, and has the main functions that: removing impurities, loosening fiber, reducing the content of neps, flying cotton and base cloth, and obtaining the fiber by transversely spreading and directly taking; wherein the carding machine is used for fiber, impurity removal, fiber loosening and transverse paving and straight taking all in the prior art; carding machine chest cylinder linear velocity: 700m/min, large cylinder line speed: 1000m/min, stripping roller linear speed 120m/min, working roller linear speed 16m/min, licker-in roller linear speed 310m/min, transfer doffer linear speed 60m/min, output doffer linear speed 40m/min, stripping roller linear speed 40m/min, carding belt linear speed 42 m/min;
(5) and drying the obtained fibers at 90 ℃ for 12h to obtain the opened fibers.
Example 2
Preparing a pretreatment finishing agent for opening filter materials:
(1) mixing 60 parts by weight of polyethylene glycol (average molecular weight is 400), 25 parts by weight of polytetrafluoroethylene emulsion with solid content of 60%, 20 parts by weight of dimethyl silicone oil emulsion, 8 parts by weight of dioctadecyl dimethyl quaternary ammonium salt, 1.5 parts by weight of potassium monododecyl phosphate and 130 parts by weight of deionized water; the damage of card clothing of a carding machine to fibers in the opening process is reduced through polyethylene glycol, and the filter material is fluffy and soft through the compounding of dimethyl silicone oil, dioctadecyl dimethyl quaternary ammonium salt and potassium monododecyl phosphate;
(2) stirring at 60 ℃, wherein the stirring mode is as follows: the pretreatment finishing agent is prepared by forward rotating at the forward rotating speed of 150rpm for 2h, continuously forward rotating at the rotating speed of 800rpm for 40min, then reversely rotating at the reverse rotating speed of 150rpm for 2h, continuously reversely rotating at the rotating speed of 800rpm for 40min, and stirring.
Applying the prepared pretreatment finishing agent to opening of filter materials:
(1) cutting the cleaned terylene finished product filter material into cloth strips with the width of 5cm, packaging the cloth strips in a mesh grid woven bag (the size of the grid is 30mm x 30mm), wherein each bag is 4kg in weight and is completely soaked in an opening pretreatment finishing agent for 25 h;
(2) after soaking, removing the opening pretreatment finishing agent on the filter material by a centrifugal method, wherein the rotating speed is 800rpm, and the time is 15 min;
(3) opening the filter material subjected to centrifugal drying for 2 times by an opener to obtain preliminary opened fibers, wherein the angular nail curtain speed of the opener is 12 m/min;
(4) the carding machine is used for carding fibers, and has the main functions that: removing impurities, loosening fiber, reducing the content of neps, flying cotton and base cloth, and obtaining the fiber by transversely spreading and directly taking; wherein the carding machine is used for fiber, impurity removal, fiber loosening and transverse paving and straight taking all in the prior art; carding machine chest cylinder linear velocity: 700m/min, large cylinder line speed: 1000m/min, stripping roller linear speed 120m/min, working roller linear speed 16m/min, licker-in roller linear speed 310m/min, transfer doffer linear speed 60m/min, output doffer linear speed 40m/min, stripping roller linear speed 40m/min, carding belt linear speed 42 m/min;
(5) and drying the obtained fibers at 90 ℃ for 12h to obtain the opened fibers.
Example 3
Preparing a pretreatment finishing agent for opening filter materials:
(1) mixing 50 parts by weight of polyethylene glycol (average molecular weight is 400), 20 parts by weight of polytetrafluoroethylene emulsion with solid content of 60%, 15 parts by weight of dimethyl silicone oil emulsion, 6 parts by weight of dioctadecyl dimethyl quaternary ammonium salt, 1 part by weight of potassium monododecyl phosphate and 130 parts by weight of deionized water; the damage of card clothing of a carding machine to fibers in the opening process is reduced by polyethylene glycol (average molecular weight is 400), and the filter material is fluffy and soft by compounding dimethyl silicone oil, dioctadecyl dimethyl quaternary ammonium salt and potassium monododecyl phosphate;
(2) stirring at 80 ℃, wherein the stirring mode is as follows: the pretreatment finishing agent is prepared by forward rotating at the forward rotating speed of 150rpm for 2h, continuously forward rotating at the rotating speed of 800rpm for 40min, then reversely rotating at the reverse rotating speed of 150rpm for 2h, continuously reversely rotating at the rotating speed of 800rpm for 40min, and stirring.
Applying the prepared pretreatment finishing agent to opening of filter materials:
(1) cutting the cleaned terylene finished product filter material into cloth strips with the width of 8cm, packaging the cloth strips in a mesh grid woven bag (the size of the grid is 30mm x 30mm), wherein each bag is 4kg in weight and is completely soaked in an opening pretreatment finishing agent for 36 hours;
(2) after soaking, removing the opening pretreatment finishing agent on the filter material by a centrifugal method, wherein the rotating speed is 800rpm, and the time is 15 min;
(3) opening the filter material subjected to centrifugal drying for 2 times by an opener to obtain preliminary opened fibers, wherein the angular nail curtain speed of the opener is 12 m/min;
(4) the carding machine is used for carding fibers, and has the main functions that: removing impurities, loosening fiber, reducing the content of neps, flying cotton and base cloth, and obtaining the fiber by transversely spreading and directly taking; wherein the carding machine is used for fiber, impurity removal, fiber loosening and transverse paving and straight taking all in the prior art; carding machine chest cylinder linear velocity: 700m/min, large cylinder line speed: 1000m/min, stripping roller linear speed 120m/min, working roller linear speed 16m/min, licker-in roller linear speed 310m/min, transfer doffer linear speed 60m/min, output doffer linear speed 40m/min, stripping roller linear speed 40m/min, carding belt linear speed 42 m/min;
(5) drying the obtained fiber at 100 ℃ for 10h to obtain the opened fiber.
Comparative example
The filter material opening method comprises the following steps:
(1) cutting the cleaned terylene finished product filter material into cloth strips with the width of 5cm, packaging the cloth strips in a mesh grid woven bag (the size of the grid is 30mm x 30mm), completely soaking the cloth strips in deionized water for 30 hours, wherein the weight of each bag is 4 kg;
(2) after soaking, removing deionized water on the filter material by a centrifugal method, wherein the rotating speed is 800rpm, and the time is 15 min;
(3) opening the filter material subjected to centrifugal drying for 2 times by an opener to obtain preliminary opened fibers, wherein the angular nail curtain speed of the opener is 12 m/min;
(4) the carding machine is used for carding fibers, and has the main functions that: removing impurities, loosening fiber, reducing the content of neps, flying cotton and base cloth, and obtaining the fiber by transversely spreading and directly taking; wherein the carding machine is used for fiber, impurity removal, fiber loosening and transverse paving and straight taking all in the prior art; carding machine chest cylinder linear velocity: 700m/min, large cylinder line speed: 1000m/min, stripping roller linear speed 120m/min, working roller linear speed 16m/min, licker-in roller linear speed 310m/min, transfer doffer linear speed 60m/min, output doffer linear speed 40m/min, stripping roller linear speed 40m/min, carding belt linear speed 42 m/min;
(5) and drying the obtained fibers at 90 ℃ for 12h to obtain the opened fibers.
Example 4
Preparing a pretreatment finishing agent for opening filter materials:
(1) mixing 50 parts by weight of polyethylene glycol (average molecular weight is 400), 20 parts by weight of polytetrafluoroethylene emulsion with solid content of 60%, 15 parts by weight of dimethyl silicone oil emulsion, 6 parts by weight of dioctadecyl dimethyl quaternary ammonium salt, 1 part by weight of potassium monododecyl phosphate and 130 parts by weight of deionized water; the damage of card clothing of a carding machine to fibers in the opening process is reduced by polyethylene glycol (average molecular weight is 400), and the filter material is fluffy and soft by compounding dimethyl silicone oil, dioctadecyl dimethyl quaternary ammonium salt and potassium monododecyl phosphate;
(2) stirring at 80 ℃, wherein the stirring mode is as follows: the pretreatment finishing agent is prepared by forward rotating at the forward rotating speed of 150rpm for 2h, continuously forward rotating at the rotating speed of 800rpm for 40min, then reversely rotating at the reverse rotating speed of 150rpm for 2h, continuously reversely rotating at the rotating speed of 800rpm for 40min, and stirring.
Applying the prepared pretreatment finishing agent to opening of filter materials:
(1) cutting the cleaned polyphenylene sulfide filter material into cloth strips with the width of 5cm, packaging the cloth strips in a mesh grid woven bag (the size of a grid is 30mm x 30mm), wherein the weight of each bag is 4kg, and completely soaking the cloth strips in an opening pretreatment finishing agent for 26 h;
(2) after soaking, removing the opening pretreatment finishing agent on the filter material by a centrifugal method, wherein the rotating speed is 800rpm, and the time is 15 min;
(3) opening the filter material subjected to centrifugal drying for 2 times by an opener to obtain preliminary opened fibers, wherein the angular nail curtain speed of the opener is 12 m/min;
(4) the carding machine is used for carding fibers, and has the main functions that: removing impurities, loosening fiber, reducing the content of neps, flying cotton and base cloth, and obtaining the fiber by transversely spreading and directly taking; wherein the carding machine is used for fiber, impurity removal, fiber loosening and transverse paving and straight taking all in the prior art; carding machine chest cylinder linear velocity: 700m/min, large cylinder line speed: 1000m/min, stripping roller linear speed 120m/min, working roller linear speed 16m/min, licker-in roller linear speed 310m/min, transfer doffer linear speed 60m/min, output doffer linear speed 40m/min, stripping roller linear speed 40m/min, carding belt linear speed 42 m/min;
(5) and drying the obtained fiber at 80 ℃ for 20h to obtain the opened fiber.
Example 5
Preparing a pretreatment finishing agent for opening filter materials:
(1) mixing 40 parts by weight of polyethylene glycol (average molecular weight is 400), 15 parts by weight of polytetrafluoroethylene emulsion with solid content of 60%, 12 parts by weight of dimethyl silicone oil emulsion, 5 parts by weight of dioctadecyl dimethyl quaternary ammonium salt, 1 part by weight of potassium monododecyl phosphate and 70 parts by weight of deionized water; the damage of card clothing of a carding machine to fibers in the opening process is reduced through polyethylene glycol, and the filter material is fluffy and soft through the compounding of dimethyl silicone oil, dioctadecyl dimethyl quaternary ammonium salt and potassium monododecyl phosphate;
(2) stirring at 70 ℃, wherein the stirring mode is as follows: the pretreatment finishing agent is prepared by forward rotating at the forward rotating speed of 100rpm for 3h, continuously forward rotating at the rotating speed of 600rpm for 50min, then reversely rotating at the reverse rotating speed of 100rpm for 2h, continuously reversely rotating at the rotating speed of 600rpm for 50min, and stirring.
Applying the prepared pretreatment finishing agent to opening of filter materials:
(1) cutting the cleaned polyphenylene sulfide filter material into cloth strips with the width of 8cm, packaging the cloth strips in a mesh grid woven bag (the size of a grid is 30mm x 30mm), wherein the weight of each bag is 4kg, and completely soaking the cloth strips in an opening pretreatment finishing agent for 28 hours;
(2) after soaking, removing the opening pretreatment finishing agent on the filter material by a centrifugal method, wherein the rotating speed is 800rpm, and the time is 15 min;
(3) opening the filter material subjected to centrifugal drying for 2 times by an opener to obtain preliminary opened fibers, wherein the angular nail curtain speed of the opener is 12 m/min;
(4) the carding machine is used for carding fibers, and has the main functions that: removing impurities, loosening fiber, reducing the content of neps, flying cotton and base cloth, and obtaining the fiber by transversely spreading and directly taking; wherein the carding machine is used for fiber, impurity removal, fiber loosening and transverse paving and straight taking all in the prior art; carding machine chest cylinder linear velocity: 700m/min, large cylinder line speed: 1000m/min, stripping roller linear speed 120m/min, working roller linear speed 16m/min, licker-in roller linear speed 310m/min, transfer doffer linear speed 60m/min, output doffer linear speed 40m/min, stripping roller linear speed 40m/min, carding belt linear speed 42 m/min;
(5) and drying the obtained fiber at 80 ℃ for 20h to obtain the opened fiber.
Example 6
The drawing force and the fiber opening performance of the base cloth in the filter material in the fiber preparation processes of the examples 1 to 3 and the comparative examples are measured by the prior art, 3 times of parallel tests are carried out on each measurement result, and the measurement results are shown in tables 1 and 2.
Table 1 shows the results of measuring the pulling force of the filter media of the base fabrics of examples 1 to 3 and comparative examples
As can be seen from Table 1, the warp direction drawing force of the base fabric after the treatment of the comparative example is 271-305N/5cm, the weft direction drawing force of the base fabric is 108-133N/5cm, the warp direction drawing force of the base fabric after the treatment of the pretreatment finishing agent is reduced to 57-66N/5cm at the lowest, and the weft direction drawing force of the base fabric is reduced to 24-31N/5cm at the lowest.
Table 2 shows the performance of the opened fibers obtained in examples 1 to 3 and comparative examples
As can be seen from tables 1 and 2, when the weight fractions of polyethylene glycol (average molecular weight 400), polytetrafluoroethylene emulsion, dimethyl silicone oil emulsion, dioctadecyl dimethyl quaternary ammonium salt and potassium monododecyl phosphate in the pretreatment finishing agent are increased, the warp direction drawing force of the base cloth and the weft direction drawing force of the base cloth are reduced along with the increase of the weight fractions of the components, but the distribution amount of the fibers with the lengths of 30-50mm is increased and then reduced, the fiber lengths after 80% of opening in example 3 are distributed between 30-50mm, and the fiber strength of more than 50% is distributed between 2.0-3.0 cN/dtex.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A pretreatment finishing agent for opening filter materials is characterized by being mainly prepared from the following raw materials in parts by weight: 40-60 parts of polyethylene glycol, 15-25 parts of polytetrafluoroethylene emulsion, 12-20 parts of dimethyl silicone oil emulsion, 5-8 parts of dioctadecyl dimethyl quaternary ammonium salt, 0.5-1.5 parts of potassium monododecyl phosphate and 60-130 parts of deionized water.
2. The pretreatment finishing agent for opening filter materials according to claim 1, wherein the polytetrafluoroethylene emulsion has a solid content of 60%.
3. The pretreatment finishing agent for opening filter materials according to claim 1, wherein the preparation method of the pretreatment finishing agent for opening filter materials comprises the following steps: mixing the raw materials in the weight portion, and stirring at the temperature of 60-80 ℃.
4. The pretreatment finishing agent for opening filter materials as claimed in claim 3, wherein the stirring manner is forward rotation, forward rotation speed is less than or equal to 200rpm, stirring time is greater than or equal to 1h, forward rotation is continued at the rotation speed of 600-800rpm for more than 30min, then reverse rotation is performed, reverse rotation speed is less than or equal to 200rpm, stirring time is greater than or equal to 1h, and reverse rotation is continued at the rotation speed of 600-800rpm for more than 30 min.
5. The pretreatment finishing agent for filter material opening according to claim 4, wherein the stirring manner is forward rotation at a forward rotation speed of 150rpm for 2h, forward rotation at a rotation speed of 800rpm for 40min, and then reverse rotation at a reverse rotation speed of 150rpm for 2h, and reverse rotation at a rotation speed of 800rpm for 40 min.
6. The application of the pretreatment finishing agent for opening filter materials in the claim 1 in opening filter materials is characterized by comprising the following steps:
(1) cleaning the filter material, cutting, and soaking in the pretreatment finishing agent for more than 24 h;
(2) removing the pretreatment finishing agent on the filter material after soaking;
(3) opening the filter material without the pretreatment finishing agent twice through an opener to obtain preliminary opened fibers;
(4) carding the preliminarily opened fibers in the step (3) by a carding machine, removing impurities, loosening the fibers, and transversely paving and directly taking the fibers to obtain the fibers;
(5) and drying the obtained fibers to obtain opened fibers.
7. The application of the pretreatment finishing agent for opening filter materials in opening filter materials according to claim 6, wherein the filter materials are mainly made of one or more of terylene, polyphenylene sulfide, aramid, acrylic fiber and polyimide fiber.
8. The application of the pretreatment finishing agent for opening filter materials in the opening of the filter materials as claimed in claim 6, wherein the filter materials are cut into cloth strips with the width less than or equal to 10cm and packed in a mesh grid woven bag, and the weight of each bag is not more than 5 kg.
9. The application of the pretreatment finishing agent for opening the filter material in opening the filter material as claimed in claim 6, wherein the pretreatment finishing agent on the filter material is removed in a centrifugal mode, the centrifugal speed is 800-1000rpm, and the centrifugal time is 10-15 min.
10. The use of the pretreatment finishing agent for opening material according to claim 6 in opening filter material, characterized in that the drying temperature is 80-105 ℃ and the drying time is 8-24 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113373557A (en) * | 2021-06-21 | 2021-09-10 | 安徽元琛环保科技股份有限公司 | Manufacturing method of foaming and opening needled felt waste material and opening fiber prepared by same |
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