WO2022105312A1 - Method for preparing aramid fibrids and aramid fibrids - Google Patents

Method for preparing aramid fibrids and aramid fibrids Download PDF

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WO2022105312A1
WO2022105312A1 PCT/CN2021/111229 CN2021111229W WO2022105312A1 WO 2022105312 A1 WO2022105312 A1 WO 2022105312A1 CN 2021111229 W CN2021111229 W CN 2021111229W WO 2022105312 A1 WO2022105312 A1 WO 2022105312A1
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aramid
fibrids
aramid fibrids
polymer
preparation
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PCT/CN2021/111229
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French (fr)
Chinese (zh)
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李永锋
常小斌
蒋少波
李健雄
尹盛东
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赣州龙邦材料科技有限公司
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Publication of WO2022105312A1 publication Critical patent/WO2022105312A1/en

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/04—Dry spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • D01F6/605—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides from aromatic polyamides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
    • D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
    • D01F6/805—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides from aromatic copolyamides

Definitions

  • the invention belongs to the technical field of manufacture of synthetic fibers, and in particular relates to a preparation method of aramid fibrids and aramid fibrids.
  • Aramid fibrids refer to synthetic polymers with a fibrous structure. Also called fibrids.
  • the main varieties are polycaprolactam, polyester, polyacrylonitrile and aromatic polyamide. Its shape is like a branch tip, the length is about 1mm, and it has adhesiveness. After being adjusted into a slurry, it can bond chemical fibers, etc., to make synthetic paper or thin non-woven fabrics.
  • the aramid fibrids obtained by the preparation methods of the aramid fibrids introduced in the current literature are usually coagulated in a coagulation liquid, and the binding ability of the paper is poor.
  • the present invention adopts the following technical solutions:
  • a preparation method of aramid precipitation fiber comprising the following steps:
  • the aramid polymer is placed in a hot air duct to form a floc
  • the flocs are mixed with water and beaten to form aramid fibrids.
  • the solid content of the aramid polymer is 10-20%, and the temperature is 60-120 degrees.
  • the hot gas pipe is a vertical pipe with a diameter of 20mm-100mm and a length of 100mm-2000mm.
  • the following steps are specifically included:
  • the solvent in the aramid polymer evaporates instantly, the solvent moves up with the hot air, and the flocs of the aramid polymer after the solvent evaporates go down. sink.
  • the spinneret is a spinning spinneret
  • the number of holes is 500-5000
  • the hole diameter is 0.06-0.20mm.
  • the hot gas is nitrogen, and the temperature of the hot gas is 150-250 degrees.
  • the aramid aramid fibrids are washed.
  • the pulp washing is accomplished with pulp washing equipment, the washing equipment including a belt washer or a drum washer.
  • the present invention also provides an aramid fibrillated fiber, which is prepared by the above-mentioned preparation method of the aramid fibrillated fiber.
  • the aramid polymer is placed in a hot air pipe to form flocs, the flocs are mixed with water, and beating is performed, Aramid fibrids are formed, and the fibrids prepared by the above method are in the form of fibers and silk films, and have strong binding ability into paper, excellent bonding performance of paper sheets, and good insulation properties.
  • the prepared paper sheets are particularly Suitable for use in the field of insulation.
  • the preparation method of the aramid fibrids provided by the present invention has the advantages of easily available raw materials, low cost and simple process, and is suitable for industrial production.
  • FIG. 1 is a flow chart of steps of a method for preparing aramid fibrids provided in an embodiment of the present invention.
  • the preparation method of aramid precipitation fiber comprises the following steps:
  • Step S110 Place the aramid polymer in a hot air duct to form a floc.
  • the following steps are specifically included:
  • the solvent in the aramid polymer evaporates instantly, the solvent moves up with the hot air, and the flocs of the aramid polymer after the solvent evaporates go down. sink.
  • the solid content of the aramid polymer is 10-20%, and the temperature is 60-120 degrees.
  • the aramid fibrids prepared from the aramid fiber have stronger bonding ability and better bonding performance of the paper sheet.
  • the hot gas pipeline is a vertical pipeline with a diameter of 20mm-100mm and a length of 100mm-2000mm.
  • the spinneret is a spinning spinneret
  • the number of holes is 500-5000
  • the hole diameter is 0.06-0.20mm.
  • the aramid fibrids prepared from them are in the form of fibers and silk films, and the aramid fibrids prepared by them are longer and have more hairiness. .
  • the hot gas is nitrogen, and the temperature of the hot gas is 150-250 degrees.
  • Step 120 Mix the flocs with water, and perform beating treatment to form aramid fibrids.
  • the above-mentioned preparation method of aramid fibrids also includes the step of washing the aramid fibrids.
  • the pulp washing is accomplished with pulp washing equipment, and the washing equipment includes a belt washer or a drum washer.
  • the precipitation fibers prepared by the above method are in the form of fibers and silk films, have strong binding ability into paper, excellent adhesion performance of paper sheets, and good insulation properties, and the prepared paper sheets are particularly suitable for use in the field of insulation.
  • the polymer had a solids content of 16.8 and a viscosity of 1.93.
  • the temperature of the hot nitrogen pipe is 200 degrees, the diameter is 50mm, and the length is 1500mm.
  • the above-mentioned polymer is sprayed into hot nitrogen through a spinneret with a hole number of 5,000 and an aperture of 0.18mm, and sinks to the bottom.
  • the mechanical beating degree is 36SR, and the fiber shape observed under the fiber microscope is very wide fiber-like and silk-film-like, and the molding is very good. This mixture is further disc-polished by a specific disc mill, and the membrane of the precipitating fiber will be further stretched, and the beating degree will reach 50SR.
  • the above-mentioned precipitating fibers and chopped fibers are copied into aramid insulating paper sheets in a paper machine according to the ratio of 1:1. After high temperature and high pressure treatment, the formed paper sheets have a thickness of 0.05mm and an electrical strength of 19.7kv/mm. Much higher than the level of domestic similar products; also reached the international leading level;
  • the polymer had a solids content of 13.8 and a viscosity of 2.2.
  • the temperature of the hot nitrogen pipe is 190 degrees, the diameter is 60mm, and the length is 2000mm.
  • the above-mentioned polymer is sprayed into the hot nitrogen gas through a spinneret with a hole number of 3000 and a hole diameter of 0.15mm, and sinks to the bottom.
  • the mechanical beating degree is 42SR, and the fiber shape observed under the fiber microscope is very broad fiber-like and silk-film-like, and the molding is very good. This mixture is further disc-polished by a specific disc mill, and the membrane of the precipitating fiber will be further stretched, and the beating degree will reach 67SR.
  • the above-mentioned precipitation fibers and chopped fibers are copied into aramid insulating paper sheets in a paper machine according to the ratio of 1:1. After high temperature and high pressure treatment, the formed paper sheets have a thickness of 0.05mm and an electrical strength of 20.8kv/mm. Much higher than the level of domestic similar products; also reached the international leading level;
  • the polymer had a solids content of 20.8 and a viscosity of 1.33.
  • the temperature of the hot nitrogen pipe is 200 degrees, the diameter is 50mm, and the length is 1000mm.
  • the above-mentioned polymer is sprayed into hot nitrogen through a spinneret with a hole number of 5,000 and an aperture of 0.18mm, and sinks to the bottom.
  • the mechanical beating degree is 29SR, and the fiber shape observed under the fiber microscope is very wide fiber-like and silk-film-like, and the molding is very good.
  • the mixed solution is further disc-polished by a specific disc mill, and the membrane of the precipitating fiber will be further stretched, and the beating degree will reach 42SR.
  • the above-mentioned precipitation fibers and chopped fibers are copied into aramid insulating paper sheets in a paper machine according to the ratio of 1:1. After high temperature and high pressure treatment, the formed paper sheets have a thickness of 0.05mm and an electrical strength of 17.8kv/mm. Much higher than the level of domestic similar products; also reached the international leading level.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Paper (AREA)
  • Artificial Filaments (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

A method for preparing aramid fibrids and aramid fibrids prepared therefrom. The preparation method comprises placing an aramid polymer in a hot gas pipeline to form floccules, mixing the floccules with water, and pulping same to form the aramid fibrids. The fibrids prepared by the method have a fiber-like form and a silk-film-like form. The paper formed therefrom has a strong binding ability, such that a paper sheet has an excellent adhesion property and a good insulation property. The prepared paper sheet is particularly suitable for the insulation field. In addition, the raw materials of the method are easily available, the cost is low, the process is simple, and the method is suitable for industrial production.

Description

一种芳纶沉析纤维的制备方法及芳纶沉析纤维A kind of preparation method of aramid precipitation fiber and aramid precipitation fiber 技术领域technical field
本发明属于合成纤维的制造技术领域，具体涉及一种芳纶沉析纤维的制备方法及芳纶沉析纤维。The invention belongs to the technical field of manufacture of synthetic fibers, and in particular relates to a preparation method of aramid fibrids and aramid fibrids.
背景技术Background technique
芳纶沉析纤维是指具有纤维状结构的合成聚合物。也称纤条体。主要品种有聚己内酰胺、聚酯、聚丙烯腈及芳香族聚酸胺等。其形态如枝梢，长度约1mm左右，有粘合性，调成浆液后，能粘合化学纤维等，制成合成纸或薄型无纺织物等。Aramid fibrids refer to synthetic polymers with a fibrous structure. Also called fibrids. The main varieties are polycaprolactam, polyester, polyacrylonitrile and aromatic polyamide. Its shape is like a branch tip, the length is about 1mm, and it has adhesiveness. After being adjusted into a slurry, it can bond chemical fibers, etc., to make synthetic paper or thin non-woven fabrics.
然而，目前的文献介绍的芳纶沉析纤维的制备方法获得的芳纶沉析纤维，通常是在凝固液中凝固成型的，成纸的结合能力较差。However, the aramid fibrids obtained by the preparation methods of the aramid fibrids introduced in the current literature are usually coagulated in a coagulation liquid, and the binding ability of the paper is poor.
如何提供一种新的芳纶沉析纤维制备方法已成为现有技术领域急需解决的技术问题。How to provide a new method for preparing aramid fibrids has become an urgent technical problem to be solved in the prior art.
发明内容SUMMARY OF THE INVENTION
鉴于此，有必要提供一种成纸的结合能力强，纸页的粘结性能优异，绝缘性能佳的芳纶沉析纤维的制备方法。In view of this, it is necessary to provide a preparation method of aramid precipitation fiber with strong paper bonding ability, excellent paper sheet bonding performance and good insulation performance.
为解决上述问题，本发明采用下述技术方案：For solving the above problems, the present invention adopts the following technical solutions:
一种芳纶沉析纤维的制备方法，包括下述步骤：A preparation method of aramid precipitation fiber, comprising the following steps:
将芳纶聚合物置于热气管道中以形成絮状物；The aramid polymer is placed in a hot air duct to form a floc;
将所述絮状物和水混合，并进行打浆处理，形成芳纶沉析纤维。The flocs are mixed with water and beaten to form aramid fibrids.
在其中一些实施例中，所述芳纶聚合物的固含量为10-20％，温度为60-120度。In some of these embodiments, the solid content of the aramid polymer is 10-20%, and the temperature is 60-120 degrees.
在其中一些实施例中，所述热气管道为垂直方向的管道，直径为20mm-100mm，长度100mm-2000mm。In some of the embodiments, the hot gas pipe is a vertical pipe with a diameter of 20mm-100mm and a length of 100mm-2000mm.
在其中一些实施例中，在将芳纶聚合物置于热气管道中以形成絮状物的步骤中，具体包括下述步骤：In some of these embodiments, in the step of placing the aramid polymer in the hot gas pipeline to form the floc, the following steps are specifically included:
将芳纶聚合物通过喷丝头喷入所述热气管道后，所述芳纶聚合物中的溶剂瞬间蒸发，溶剂随热气往上运动，溶剂蒸发后的芳纶聚合物的絮状物往下下沉。After the aramid polymer is sprayed into the hot air pipe through the spinneret, the solvent in the aramid polymer evaporates instantly, the solvent moves up with the hot air, and the flocs of the aramid polymer after the solvent evaporates go down. sink.
在其中一些实施例中，所述喷丝头为纺丝喷丝头，孔数为500-5000，孔径为0.06-0.20mm。In some of the embodiments, the spinneret is a spinning spinneret, the number of holes is 500-5000, and the hole diameter is 0.06-0.20mm.
在其中一些实施例中，所述热气为氮气，所述热气的温度为150度-250度。In some of the embodiments, the hot gas is nitrogen, and the temperature of the hot gas is 150-250 degrees.
在其中一些实施例中，还包括下述步骤：In some of these embodiments, the following steps are also included:
将所述芳纶芳纶沉析纤维进行洗浆。The aramid aramid fibrids are washed.
在其中一些实施例中，所述洗浆用纸浆的水洗设备来完成，所述水洗设备包括带式洗浆机或转鼓洗浆机。In some of these embodiments, the pulp washing is accomplished with pulp washing equipment, the washing equipment including a belt washer or a drum washer.
另外，本发明还提供了一种芳纶沉析纤维，由上述所述的芳纶沉析纤维的制备方法制备得到。In addition, the present invention also provides an aramid fibrillated fiber, which is prepared by the above-mentioned preparation method of the aramid fibrillated fiber.
相较于现有技术，本申请提供的芳纶沉析纤维的制备方法，将芳纶聚合物置于热气管道中以形成絮状物，将所述絮状物和水混合，并进行打浆处理，形成芳纶沉析纤维，采用上述方法制备得到的沉析纤维，形态是纤维状和丝膜状，成纸的结合能力强，纸页的粘结性能优异，绝缘性能佳，制备的纸页特别适合用于绝缘领域。Compared with the prior art, in the preparation method of aramid fibrids provided by the present application, the aramid polymer is placed in a hot air pipe to form flocs, the flocs are mixed with water, and beating is performed, Aramid fibrids are formed, and the fibrids prepared by the above method are in the form of fibers and silk films, and have strong binding ability into paper, excellent bonding performance of paper sheets, and good insulation properties. The prepared paper sheets are particularly Suitable for use in the field of insulation.
此外，本发明提供的芳纶沉析纤维的制备方法，原材料易得，成本低，工艺简单，适合工业化生产。In addition, the preparation method of the aramid fibrids provided by the present invention has the advantages of easily available raw materials, low cost and simple process, and is suitable for industrial production.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.
图1为本发明实施例提供的芳纶沉析纤维的制备方法的步骤流程图。FIG. 1 is a flow chart of steps of a method for preparing aramid fibrids provided in an embodiment of the present invention.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
请参阅图1，本申请提供的芳纶沉析纤维的制备方法包括下述步骤：Please refer to Fig. 1, the preparation method of aramid precipitation fiber provided by this application comprises the following steps:
步骤S110：将芳纶聚合物置于热气管道中以形成絮状物。Step S110: Place the aramid polymer in a hot air duct to form a floc.
具体地，在将芳纶聚合物置于热气管道中以形成絮状物的步骤中，具体包括下述步骤：Specifically, in the step of placing the aramid polymer in the hot gas pipeline to form the floc, the following steps are specifically included:
将芳纶聚合物通过喷丝头喷入所述热气管道后，所述芳纶聚合物中的溶剂瞬间蒸发，溶剂随热气往上运动，溶剂蒸发后的芳纶聚合物的絮状物往下下沉。After the aramid polymer is sprayed into the hot air pipe through the spinneret, the solvent in the aramid polymer evaporates instantly, the solvent moves up with the hot air, and the flocs of the aramid polymer after the solvent evaporates go down. sink.
进一步地，所述芳纶聚合物的固含量为10-20％，温度为60-120度。Further, the solid content of the aramid polymer is 10-20%, and the temperature is 60-120 degrees.
可以理解，在所述芳纶聚合物满足以上参数时，由其制备的芳纶沉析纤维成纸的结合能力更强纸页的粘结性能更为优异。It can be understood that when the aramid polymer satisfies the above parameters, the aramid fibrids prepared from the aramid fiber have stronger bonding ability and better bonding performance of the paper sheet.
进一步地，所述热气管道为垂直方向的管道，直径为20mm-100mm，长度100mm-2000mm。Further, the hot gas pipeline is a vertical pipeline with a diameter of 20mm-100mm and a length of 100mm-2000mm.
在其中一些实施例中，所述喷丝头为纺丝喷丝头，孔数为500-5000，孔径为0.06-0.20mm。In some of the embodiments, the spinneret is a spinning spinneret, the number of holes is 500-5000, and the hole diameter is 0.06-0.20mm.
可以理解，在所述热气管道及喷丝头满足以上参数时，由其制备的芳纶沉析纤维形态是纤维状和丝膜状，其制备的芳纶沉析纤维更长，毛羽也更丰富。It can be understood that when the hot air pipe and the spinneret meet the above parameters, the aramid fibrids prepared from them are in the form of fibers and silk films, and the aramid fibrids prepared by them are longer and have more hairiness. .
在其中一些实施例中，所述热气为氮气，所述热气的温度为150度-250度。In some of the embodiments, the hot gas is nitrogen, and the temperature of the hot gas is 150-250 degrees.
步骤120：将所述絮状物和水混合，并进行打浆处理，形成芳纶沉析纤维。Step 120: Mix the flocs with water, and perform beating treatment to form aramid fibrids.
进一步地，上述芳纶沉析纤维的制备方法，还包括将所述芳纶芳纶沉析纤维进行洗浆的步骤。Further, the above-mentioned preparation method of aramid fibrids also includes the step of washing the aramid fibrids.
具体地，所述洗浆用纸浆的水洗设备来完成，所述水洗设备包括带式洗浆机或转鼓洗浆机。Specifically, the pulp washing is accomplished with pulp washing equipment, and the washing equipment includes a belt washer or a drum washer.
采用上述方法制备得到的沉析纤维，形态是纤维状和丝膜状，成纸的结合能力强，纸页的粘结性能优异，绝缘性能佳，制备的纸页特别适合用于绝缘领域。The precipitation fibers prepared by the above method are in the form of fibers and silk films, have strong binding ability into paper, excellent adhesion performance of paper sheets, and good insulation properties, and the prepared paper sheets are particularly suitable for use in the field of insulation.
以下结合详细实施例对本发明的技术方案进行详细说明。The technical solutions of the present invention will be described in detail below with reference to the detailed embodiments.
实施例1：Example 1:
按照上述方法，聚合物的固含量为16.8，粘度为1.93。热氮气管道的温度为200度，直径为50mm，长度为1500mm。上述聚合物通过一个孔数为5000，孔径为0.18mm的喷丝头喷入热氮气中，沉到下面，上述方法收集的的絮状纤维，经过打浆处理，洗涤清洗工序，形成产品，产品的机械打浆度为36SR，在纤维镜下观察纤维形态是很宽大的纤维状和丝膜状，并且成型很好。把这混合液经过特定的盘磨机进一步盘磨处理，沉析纤维的膜会进一步舒展，叩解度达到50SR。Following the above procedure, the polymer had a solids content of 16.8 and a viscosity of 1.93. The temperature of the hot nitrogen pipe is 200 degrees, the diameter is 50mm, and the length is 1500mm. The above-mentioned polymer is sprayed into hot nitrogen through a spinneret with a hole number of 5,000 and an aperture of 0.18mm, and sinks to the bottom. The mechanical beating degree is 36SR, and the fiber shape observed under the fiber microscope is very wide fiber-like and silk-film-like, and the molding is very good. This mixture is further disc-polished by a specific disc mill, and the membrane of the precipitating fiber will be further stretched, and the beating degree will reach 50SR.
把上述沉析纤维和短切纤维按照1：1的比例在造纸机中抄成芳纶绝缘纸页，经过高温高压处理，形成的纸页，厚度0.05mm，电气强度为：19.7kv/mm， 远高于国内同类产品的水平；也达到国际领先水平；The above-mentioned precipitating fibers and chopped fibers are copied into aramid insulating paper sheets in a paper machine according to the ratio of 1:1. After high temperature and high pressure treatment, the formed paper sheets have a thickness of 0.05mm and an electrical strength of 19.7kv/mm. Much higher than the level of domestic similar products; also reached the international leading level;
实施例2：Example 2:
按照上述方法，聚合物的固含量为13.8，粘度为2.2。热氮气管道的温度为190度，直径为60mm，长度为2000mm。上述聚合物通过一个孔数为3000，孔径为0.15mm的喷丝头喷入热氮气中，沉到下面，上述方法收集的的絮状纤维，经过打浆处理，洗涤清洗工序，形成产品，产品的机械打浆度为42SR，在纤维镜下观察纤维形态是很宽大的纤维状和丝膜状，并且成型很好。把这混合液经过特定的盘磨机进一步盘磨处理，沉析纤维的膜会进一步舒展，叩解度达到67SR。Following the above procedure, the polymer had a solids content of 13.8 and a viscosity of 2.2. The temperature of the hot nitrogen pipe is 190 degrees, the diameter is 60mm, and the length is 2000mm. The above-mentioned polymer is sprayed into the hot nitrogen gas through a spinneret with a hole number of 3000 and a hole diameter of 0.15mm, and sinks to the bottom. The mechanical beating degree is 42SR, and the fiber shape observed under the fiber microscope is very broad fiber-like and silk-film-like, and the molding is very good. This mixture is further disc-polished by a specific disc mill, and the membrane of the precipitating fiber will be further stretched, and the beating degree will reach 67SR.
把上述沉析纤维和短切纤维按照1：1的比例在造纸机中抄成芳纶绝缘纸页，经过高温高压处理，形成的纸页，厚度0.05mm，电气强度为：20.8kv/mm，远高于国内同类产品的水平；也达到国际领先水平；The above-mentioned precipitation fibers and chopped fibers are copied into aramid insulating paper sheets in a paper machine according to the ratio of 1:1. After high temperature and high pressure treatment, the formed paper sheets have a thickness of 0.05mm and an electrical strength of 20.8kv/mm. Much higher than the level of domestic similar products; also reached the international leading level;
实施例3：Example 3:
按照上述方法，聚合物的固含量为20.8，粘度为1.33。热氮气管道的温度为200度，直径为50mm，长度为1000mm。上述聚合物通过一个孔数为5000，孔径为0.18mm的喷丝头喷入热氮气中，沉到下面，上述方法收集的的絮状纤维，经过打浆处理，洗涤清洗工序，形成产品，产品的机械打浆度为29SR，在纤维镜下观察纤维形态是很宽大的纤维状和丝膜状，并且成型很好。把这混合液经过特定的盘磨机进一步盘磨处理，沉析纤维的膜会进一步舒展，叩解度达到42SR。Following the above procedure, the polymer had a solids content of 20.8 and a viscosity of 1.33. The temperature of the hot nitrogen pipe is 200 degrees, the diameter is 50mm, and the length is 1000mm. The above-mentioned polymer is sprayed into hot nitrogen through a spinneret with a hole number of 5,000 and an aperture of 0.18mm, and sinks to the bottom. The mechanical beating degree is 29SR, and the fiber shape observed under the fiber microscope is very wide fiber-like and silk-film-like, and the molding is very good. The mixed solution is further disc-polished by a specific disc mill, and the membrane of the precipitating fiber will be further stretched, and the beating degree will reach 42SR.
把上述沉析纤维和短切纤维按照1：1的比例在造纸机中抄成芳纶绝缘纸 页，经过高温高压处理，形成的纸页，厚度0.05mm，电气强度为：17.8kv/mm，远高于国内同类产品的水平；也达到国际领先水平。The above-mentioned precipitation fibers and chopped fibers are copied into aramid insulating paper sheets in a paper machine according to the ratio of 1:1. After high temperature and high pressure treatment, the formed paper sheets have a thickness of 0.05mm and an electrical strength of 17.8kv/mm. Much higher than the level of domestic similar products; also reached the international leading level.
以上仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。The above are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (9)

  1. 一种芳纶沉析纤维的制备方法，其特征在于，包括下述步骤：A preparation method of aramid fibrid is characterized in that, comprises the following steps:
    将芳纶聚合物置于热气管道中以形成絮状物；The aramid polymer is placed in a hot air duct to form a floc;
    将所述絮状物和水混合，并进行打浆处理，形成芳纶沉析纤维。The flocs are mixed with water and beaten to form aramid fibrids.
  2. 根据权利要求1所述的芳纶沉析纤维的制备方法，其特征在于，所述芳纶聚合物的固含量为10-20％，温度为60-120度。The method for preparing aramid fibrids according to claim 1, wherein the solid content of the aramid polymer is 10-20%, and the temperature is 60-120 degrees.
  3. 根据权利要求1所述的芳纶沉析纤维的制备方法，其特征在于，所述热气管道为垂直方向的管道，直径为20mm-100mm，长度100mm-2000mm。The method for preparing aramid fibrids according to claim 1, wherein the hot gas pipe is a pipe in a vertical direction, with a diameter of 20mm-100mm and a length of 100mm-2000mm.
  4. 根据权利要求3所述的芳纶沉析纤维的制备方法，其特征在于，在将芳纶聚合物置于热气管道中以形成絮状物的步骤中，具体包括下述步骤：The preparation method of aramid fibrids according to claim 3, is characterized in that, in the step of placing the aramid polymer in the hot gas pipeline to form the floc, specifically comprises the following steps:
    将芳纶聚合物通过喷丝头喷入所述热气管道后，所述芳纶聚合物中的溶剂瞬间蒸发，溶剂随热气往上运动，溶剂蒸发后的芳纶聚合物的絮状物往下下沉。After the aramid polymer is sprayed into the hot air pipe through the spinneret, the solvent in the aramid polymer evaporates instantly, the solvent moves up with the hot air, and the flocs of the aramid polymer after the solvent evaporates go down. sink.
  5. 根据权利要求4所述的芳纶沉析纤维的制备方法，其特征在于，所述喷丝头为纺丝喷丝头，孔数为500-5000，孔径为0.06-0.20mm。The method for preparing aramid fibrids according to claim 4, wherein the spinneret is a spinning spinneret, the number of holes is 500-5000, and the hole diameter is 0.06-0.20mm.
  6. 根据权利要求4所述的芳纶沉析纤维的制备方法，其特征在于，所述热气为氮气，所述热气的温度为150度-250度。The method for preparing aramid fibrids according to claim 4, wherein the hot gas is nitrogen, and the temperature of the hot gas is 150-250 degrees.
  7. 根据权利要求1所述的芳纶沉析纤维的制备方法，其特征在于，还包括下述步骤：The preparation method of aramid fibrids according to claim 1, is characterized in that, also comprises the following steps:
    将所述芳纶芳纶沉析纤维进行洗浆。The aramid aramid fibrids are washed.
  8. 根据权利要求1所述的芳纶沉析纤维的制备方法，其特征在于，所述洗浆用纸浆的水洗设备来完成，所述水洗设备包括带式洗浆机或转鼓洗浆机。The preparation method of aramid fibrids according to claim 1, characterized in that, the pulp washing is accomplished by a pulp washing equipment, and the washing equipment includes a belt washer or a drum washer.
  9. 一种芳纶沉析纤维，其特征在于，由权利要求1至8任一项所述的芳纶沉析纤维的制备方法制备得到。A kind of aramid fiber is characterized in that, it is prepared by the preparation method of aramid fiber according to any one of claims 1 to 8.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115110171A (en) * 2022-06-28 2022-09-27 陈克复 Aramid fibrid and preparation method and application thereof
CN115369505A (en) * 2022-07-08 2022-11-22 株洲时代新材料科技股份有限公司 Multistage dispersion disc precipitation forming device and forming process, precipitation fiber precipitation purification device and process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112430860A (en) * 2020-11-18 2021-03-02 赣州龙邦材料科技有限公司 Preparation method of aramid fibrid and aramid fibrid

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101341289A (en) * 2005-12-21 2009-01-07 纳幕尔杜邦公司 Para-aramid pulp including meta-aramid fibrids and processes of making same
CN101851809A (en) * 2010-06-04 2010-10-06 深圳市中晟创新科技有限公司 Method for preparing aramid IIII fiber
CN103282412A (en) * 2011-01-04 2013-09-04 帝人芳纶有限公司 Electrical insulating paper
KR20150061983A (en) * 2013-11-28 2015-06-05 도레이케미칼 주식회사 Fabriclike aramid sheets for water purification and preparation method thereof
CN106245411A (en) * 2016-08-30 2016-12-21 烟台民士达特种纸业股份有限公司 A kind of production method of meta-aramid fibers paper base material
CN106637473A (en) * 2016-10-11 2017-05-10 四川辉腾科技股份有限公司 Method for environment-friendly production of meta-position aramid fiber fibrid
CN110218309A (en) * 2019-06-05 2019-09-10 赣州龙邦材料科技有限公司 A kind of colloidal aramid fiber polymeric compound and preparation method thereof
CN209443113U (en) * 2018-11-20 2019-09-27 中蓝晨光化工研究设计院有限公司 A kind of induction aramid fiber continuous heat heating path
CN112430860A (en) * 2020-11-18 2021-03-02 赣州龙邦材料科技有限公司 Preparation method of aramid fibrid and aramid fibrid

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101457405A (en) * 2008-10-28 2009-06-17 烟台氨纶股份有限公司 Method for preparing para-aramid dissolving pulp and products
CN101724935B (en) * 2009-12-14 2011-09-14 中蓝晨光化工研究院有限公司 Polyphenylene terephthalamide fibre and preparation method thereof
CN102534839A (en) * 2010-12-09 2012-07-04 烟台泰和新材料股份有限公司 Method for preparing meta-aramid fiber
CN102534841B (en) * 2011-06-08 2014-06-18 王锡璐 Poly (p-phenylene terephthalamide) aramid fiber II staple fiber and preparation method thereof
KR101967477B1 (en) * 2012-12-05 2019-04-09 도레이케미칼 주식회사 Dry Spinning Device for Fabricating the Meta-Aramide
CN104790056A (en) * 2015-04-15 2015-07-22 南通大学 Preparation method for aramid fibrid
CN110359115A (en) * 2019-07-03 2019-10-22 中化高性能纤维材料有限公司 A kind of preparation method of coloured para-aramid fiber

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101341289A (en) * 2005-12-21 2009-01-07 纳幕尔杜邦公司 Para-aramid pulp including meta-aramid fibrids and processes of making same
CN101851809A (en) * 2010-06-04 2010-10-06 深圳市中晟创新科技有限公司 Method for preparing aramid IIII fiber
CN103282412A (en) * 2011-01-04 2013-09-04 帝人芳纶有限公司 Electrical insulating paper
KR20150061983A (en) * 2013-11-28 2015-06-05 도레이케미칼 주식회사 Fabriclike aramid sheets for water purification and preparation method thereof
CN106245411A (en) * 2016-08-30 2016-12-21 烟台民士达特种纸业股份有限公司 A kind of production method of meta-aramid fibers paper base material
CN106637473A (en) * 2016-10-11 2017-05-10 四川辉腾科技股份有限公司 Method for environment-friendly production of meta-position aramid fiber fibrid
CN209443113U (en) * 2018-11-20 2019-09-27 中蓝晨光化工研究设计院有限公司 A kind of induction aramid fiber continuous heat heating path
CN110218309A (en) * 2019-06-05 2019-09-10 赣州龙邦材料科技有限公司 A kind of colloidal aramid fiber polymeric compound and preparation method thereof
CN112430860A (en) * 2020-11-18 2021-03-02 赣州龙邦材料科技有限公司 Preparation method of aramid fibrid and aramid fibrid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115110171A (en) * 2022-06-28 2022-09-27 陈克复 Aramid fibrid and preparation method and application thereof
CN115110171B (en) * 2022-06-28 2023-10-13 陈克复 Aramid fibrid and preparation method and application thereof
CN115369505A (en) * 2022-07-08 2022-11-22 株洲时代新材料科技股份有限公司 Multistage dispersion disc precipitation forming device and forming process, precipitation fiber precipitation purification device and process
CN115369505B (en) * 2022-07-08 2024-05-03 株洲时代新材料科技股份有限公司 Multistage dispersion plate precipitation forming device and forming process, fibrid precipitation purifying device and technology

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