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Spinneret plate for melt spinning and preparation method thereof

A technology of melt spinning and spinneret, which is applied in the field of melt spinning spinneret and its preparation, which can solve the problems of polymer fiber filament change, spinneret hole surface damage, and fiber quality, etc., to achieve service life The effect of prolonging, reducing the scrap rate, and evenly distributing

Active Publication Date: 2008-05-14
德阳科吉高新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present inventor is carrying out polymers such as polyester, polyamide, polyetheretherketone resin, especially polyphenylene sulfide melt-spinning process and finds, owing to contain a small amount of low fraction and impurity in these polymers, in spinning A certain amount of corrosive gas will be produced during the process, such as sulfur dioxide, which will also damage the surface of the spinneret hole, resulting in deformation of the spinneret hole and changing the shape of the spun polymer fiber filaments, which will also affect fiber quality

Method used

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  • Spinneret plate for melt spinning and preparation method thereof

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Effect test

Embodiment 1

[0028] Add 3% polyethoxy monostearic acid herbal tea alcohol to the 1% polyvinyl alcohol aqueous solution, and stir evenly, and then add 0.8% of SiO with a particle size of 6nm. 2 Stir and mix the powder evenly to form a uniform and stable nano-suspension; immerse the spinneret in the prepared nano-suspension for 30 seconds, take it out, dry it naturally at room temperature, and then place the spinneret covered with the mixed film at 300 After processing in a high-temperature furnace at 1800°C for 30 minutes, place it in a heating furnace at 1800°C for 15 seconds, take it out and let the spinneret cool down slowly. In this way, the surface of the spinneret 1 including the spinneret hole 2 is coated with a layer of SiO with a thickness of about 0.8um. 2 Membrane 3, see Figure 1.

Embodiment 2

[0030] Add 5% polyethoxy monostearic acid herbal tea alcohol to the 10% polyvinyl alcohol aqueous solution, and stir evenly, then add 8% SiO with a particle size of 60nm 2Stir and mix the powder evenly to form a uniform and stable sub-nanometer suspension; immerse the spinneret in the prepared sub-nanometer suspension for 10 seconds, take it out, dry it naturally at room temperature, and then place the spinneret covered with the mixed film After processing in a high-temperature furnace at 240°C for 60 minutes, place it in a heating furnace at 1800°C for 30 seconds, take it out and let the spinneret cool down slowly. In this way, the surface of the spinneret 1 including the spinneret hole 2 is coated with a layer of SiO with a thickness of about 28um. 2 Membrane 3, see Figure 1.

Embodiment 3

[0032] Add 4% polyethylene oxide sorbitol monostearate to the 5% polyvinyl alcohol aqueous solution, and stir evenly, and then add 0.8% TiO with a particle size of 9nm. 2 Stir and mix the powder evenly to form a uniform and stable nano-suspension; immerse the spinneret in the prepared nano-suspension for 30 seconds, take it out, dry it naturally at room temperature, and then place the spinneret covered with the mixed film at 220 After processing in a high-temperature furnace at ℃ for 50 minutes, place it in a heating furnace at 1800 ℃ for 23 seconds, take it out and let the spinneret cool down slowly. In this way, the surface of the spinneret 1 including the spinneret hole 2 is coated with a layer of TiO with a thickness of about 12um. 2 Membrane 3, see Figure 1.

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Abstract

The invention discloses a spinneret plate used for melt spinning. The surface or the inner surface of the spinneret plate is covered by a nano-scaling or hypo-nano scaling oxide film with a thickness of 0.8nm to 28nm or a 0.1mm to 0.25mm metal lamina is embedded in a spinneret orifice in the spinneret plate. The invention also discloses a method for preparing the spinneret plate used for melt spinning. As the surface or the inner surface of the spinneret plate of the invention is covered by the nano-scaling or hypo-nano scaling oxide film or because the metal lamina is embedded in the spinneret orifice , the invention not only can avoid the degradation and degeneration of melten polymer passing through the spinneret plate but also can avoid the damage of corrosive substances and impurities of fused mass to the inner surface of the spinneret orifice, thus prolonging the service life of the spinneret plate and lowering the rejection rate of the fibers. Suspension used in the invention does not use expensive and poisonous organic solvent, thus not only lowering manufacturing cost, but also avoiding environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of melt spinning equipment, and in particular relates to a spinneret for melt spinning and a preparation method thereof. Background technique [0002] The spinnerets used in polymer melt spinning equipment are made of low-cost stainless steel materials with good mechanical properties, corrosion resistance and good unloading resistance. Although the spinneret made of stainless steel has various advantages, it is very difficult to replace it with other raw materials at present, but there are indeed some problems in spinning with it, as disclosed in Japanese Patent No. Sho-53- No. 29732 describes molten polymers that are in contact with stainless steel, and polymer crystal degradation and degradation usually occur; and describes that when polyester and polyamide 66 are melt-spun, they will pass through melt-spun stainless steel components. Crystallization of the molten polymer, which degrades and degrades the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D4/02C21D9/46
Inventor 陈逊
Owner 德阳科吉高新材料有限责任公司
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