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Spinneret plate for melt spinning

A melt spinning and spinneret technology, applied in spinneret assemblies, textiles and papermaking, heat treatment equipment, etc., can solve the problems of polymer fiber strand changes, surface damage of spinneret holes, affecting fiber quality, etc. Achieve the effect of prolonging the service life, reducing the scrap rate and uniform distribution

Active Publication Date: 2012-02-29
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
  • Spinneret plate for melt spinning

Examples

Experimental program
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Effect test

Embodiment 1

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

Embodiment 2

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

Embodiment 3

[0032] Add 4% polyethylene oxide sorbitol monostearate in the prepared polyvinyl alcohol aqueous solution with a concentration of 5%, and stir it evenly, and then add 0.8% TiO with a particle size of 9nm 2 Stir and mix the powder uniformly to form a uniform and stable nano-suspension; immerse the spinneret in the prepared nano-suspension for 30 seconds, then take it out, dry it naturally at room temperature, and place the spinneret covered with the mixed film at 220 After being treated in a high-temperature furnace at ℃ for 50 minutes, it was placed in a heating furnace at 1800 ℃ and heated for 23 seconds, and the spinneret was taken out to cool down slowly. In this way, a layer of TiO with a thickness of about 12um is coated on the surface of the spinneret 1, including the spinneret hole 2. 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 specifically relates to a spinneret for melt spinning and a preparation method thereof. Background technique [0002] The spinnerets used in polymer melt spinning equipment are all made of low-value stainless steel materials with good mechanical properties, corrosion resistance and good anti-unloading capabilities. 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 some problems with it for spinning, such as the published Japanese Patent No. Sho-53- No. 29732 describes that molten polymers in contact with stainless steel will usually degrade and degrade polymer crystals. It also describes that when polyester and polyamide 66 melt spinning, they will pass through melt-spun stainless steel components. The molten polymer is crystallized, thereby degrading and degrading the molten...

Claims

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Application Information

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Patent Type & Authority Patents(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