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Preparation method of attapulgite modified polyester industrial yarns

A technology of attapulgite and industrial yarn, which is applied in the field of polyester fiber production, can solve the problems of not meeting the requirements of polyester industrial yarn products, high elongation, low fiber strength and modulus, etc., and achieve performance improvement, low elongation, Good product performance

Inactive Publication Date: 2012-01-25
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the fiber is produced by ordinary polyester chip drying, spinning and drawing processes, the strength and modulus of the fiber are still low, and the elongation is still relatively large (the fiber breaking strength is 2.9-3.5cN / dtex, and the breaking elongation is 28 ~38%, Young's modulus 3.0~3.9×10 3 g / dtex), which cannot meet the user's product requirements for polyester industrial yarn
At present, there is no report on the preparation of attapulgite modified polyester industrial yarn by masterbatch injection method

Method used

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  • Preparation method of attapulgite modified polyester industrial yarns
  • Preparation method of attapulgite modified polyester industrial yarns
  • Preparation method of attapulgite modified polyester industrial yarns

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preparation example Construction

[0014] The preparation method of attapulgite modified polyester industrial yarn designed by the present invention (abbreviation preparation method, see figure 1 , 2 ), including the following process steps: the attapulgite masterbatch is metered and blended with polyester chips by the masterbatch injection method, and then pre-crystallized and solid-state polymerization is performed to obtain a co-polymer of high-viscosity attapulgite masterbatch and polyester. Mixed slices, followed by screw extrusion melting, spinning, stretching and winding to obtain attapulgite modified polyester industrial yarn; or pre-crystallization and solid-state polymerization of polyester slices to obtain high-viscosity Polyester chips, and then use the masterbatch injection method to mix the attapulgite masterbatch with high-viscosity polyester chips by metering and blending, and then melt, spin, stretch and wind through screw extrusion to obtain attapulgite modified polyester. Ester Industrial Ya...

Embodiment 1

[0027] The attapulgite masterbatch was measured with a masterbatch injector and blended with ordinary glossy polyester chips, the blending weight percentage was 20:80; after pre-crystallization and solid-state polymerization, the high-viscosity attapulgite masterbatch and polyester chips were obtained. Blended slices of esters; the pre-crystallization temperature is 165°C, and the crystallization time is 2.5 hours; the solid-phase polymerization temperature is 200°C, the time is 23 hours, the nitrogen dew point is -45°C, and the polyester slice viscosity reaches 1.10dL / g; Through screw extrusion, melt spinning, stretching and winding, the concave-convex modified polyester industrial yarn can be obtained. The melting temperature of the screw extrusion is 301°C, the spinning temperature is 300°C, and the temperature of the slow cooler is 357°C; the side blowing wind speed is 0.50 m / s, the humidity is 65%, and the wind temperature is 22°C; the stretching process conditions are : ...

Embodiment 2

[0030] Ordinary glossy polyester chips are used, and high-viscosity polyester chips are prepared by pre-crystallization and solid-state polymerization; the pre-crystallization temperature is 165°C, and the crystallization time is 3.0 hours; the solid-state polymerization temperature is 205°C, and the time is 25 hours. The nitrogen dew point is -45°C, and the viscosity of polyester chips reaches 1.15dL / g; the attapulgite masterbatch is dried and measured by a hopper dryer and a masterbatch injector, and then blended with high-viscosity polyester chips, and the attapulgite masterbatch is mixed with The blending weight percentage of the high-viscosity polyester chip is 20:80; then, the concave-convex modified polyester industrial yarn is obtained through screw extrusion, melt spinning, stretching and winding. The melting temperature of the screw extrusion is 300°C, the spinning temperature is 299°C, and the temperature of the slow cooler is 365°C; the side blowing wind speed is 0....

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Abstract

The invention discloses a preparation method of attapulgite modified polyester industrial yarns. The preparation method comprises the following processing steps of: blending attapulgite master batch and polyester chips through meter mixing by adopting a master batch injection method, then carrying out precrystallization and solid-phase polymerization reaction to prepare high-viscosity blended chips of the attapulgite master batch and polyester, then sequentially carrying out screw extrusion fusing, spinning, stretching and winding to prepare the attapulgite modified polyester industrial yarns; or firstly carrying out precrystallization and solid-phase polymerization reaction on the polyester chips to prepare high-viscosity polyester chips, then blending the attapulgite master batch and the polyester chips through meter mixing by adopting the master batch injection method, and then carrying out screw extrusion fusing, spinning, stretching and winding to prepare the attapulgite modifiedpolyester industrial yarns. The attapulgite modified polyester industrial yarns prepared by adopting the preparation method have excellent performance.

Description

technical field [0001] The invention relates to polyester fiber production technology, in particular to a preparation method of attapulgite modified polyester industrial yarn. Background technique [0002] Attapulgite (also known as attapulgite clay, attapulgite, attapulgite, ATP) is a hydrated magnesium aluminum silicate (Mg 5 Si 8 o 20 (HO) 2 (OH 2 ) 4 4H 2 O). Each unit layer is connected to each other through oxygen to form a channel-like crystal structure, forming a fibrous single crystal, which is mostly straight needle-like, rod-like or fibrous macroscopically, with a diameter of 10-25nm and a length of 100-1000nm. Attapulgite is a natural nanostructured mineral material with a nanochannel structure. It has surface and interface properties such as large specific surface area, surface activity, porosity, strong adsorption capacity, and ion exchange. The water absorption rate is ≥150%, and the oil absorption rate is ≥80%. . The use of attapulgite nanoparticles ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/098D01D5/088D01D1/00D01F6/92
Inventor 尹翠玉肖长发安树林金剑
Owner TIANJIN POLYTECHNIC UNIV