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Synthetic method of PBT color spinning yarns

A synthesis method and color spinning technology, which is applied in the synthesis field of PBT color spinning, can solve the problems such as no PBT color spinning reports, and achieve the effects of excellent chemical resistance, soft hand feeling and low heavy metal content

Inactive Publication Date: 2010-06-30
YIZHENG XINGHAI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report of relevant PBT color spinning in the prior art

Method used

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  • Synthetic method of PBT color spinning yarns
  • Synthetic method of PBT color spinning yarns

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preparation example Construction

[0012] In conjunction with the accompanying drawings, a synthetic method of PBT color spinning of the present invention is to mix the colored functional masterbatch and PBT slices according to the weight ratio, and extrude new particles through twin-screw mixing to form mixed particles, and then through spinning Silk, spun by adding mixed particles, feeding it into a twin-screw extruder for melt extrusion, spinning through a spinneret, and cooling the tow by blowing into a pre-stretching machine for pre-stretching, and then winding The head is wound, that is, PBT color spinning. Specifically include the following steps:

[0013] Step 1. Pre-crystallize the material, which is a mixture of masterbatch and PBT slices; specifically, pre-crystallization is carried out with dry hot air; the pre-crystallization temperature is 140-145°C, and the temperature of dry hot air is 145-150°C , the air dew point is less than or equal to -60°C, the moisture content of the material is 25ppm, a...

Embodiment 1

[0020] A kind of synthetic method of PBT color spinning of the present invention, comprises the following steps:

[0021] Step 1. Pre-crystallize the material, which is a mixture of masterbatch and PBT slices; specifically, dry hot air is used for pre-crystallization; the pre-crystallization temperature is 140°C, the temperature of dry hot air is 145°C, and the air dew point is -60°C, the moisture content of the material is 25ppm, and the drying time is 12 hours.

[0022] Step 2. Material screw feeding: first dry the color masterbatch with hot air, then feed the mixed material of the color masterbatch and PBT chips into the screw extruder through a special color masterbatch feeder that can measure the color masterbatch Middle; when the material is screw-fed, the material is a mixture of PBT (polybutylene terephthalate) chip and color masterbatch, and the color masterbatch accounts for 1% of the mixture.

[0023] Step 3, filter, filter the mixture after extruder extrusion, gua...

Embodiment 2

[0026] A kind of synthetic method of PBT color spinning, comprises the following steps:

[0027] Step 1. Pre-crystallize the material, which is a mixture of masterbatch and PBT slices; specifically, dry hot air is used for pre-crystallization; the pre-crystallization temperature is 145°C, the temperature of dry hot air is 150°C, and the air dew point is -55°C, the moisture content of the material is 25ppm, and the drying time is 16 hours.

[0028] Step 2. Material screw feeding: first dry the color masterbatch with hot air, then feed the mixed material of the color masterbatch and PBT chips into the screw extruder through a special color masterbatch feeder that can measure the color masterbatch Middle; when the material is screw-fed, the material is a mixture of PBT (polybutylene terephthalate) chip and color masterbatch, and the color masterbatch accounts for 6% of the mixture.

[0029] Step 3, filter, filter the mixture after extruder extrusion, guarantee the continuous pro...

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Abstract

The present invention relates to a synthetic method of PBT color spinning yarns. Firstly, material is crystallized in advance, and the material is a mixture of masterbatch and PBT cutting sheets, and hot air is dried to crystallize in advance; secondly, the material is fed in a screw rod type to be filtered then, the mixture extruded by an screw rod extruding press is filtered, and the continuous production of spinning and the constant of pressure of the screw rod extruding press are ensured when in filtration; finally, spinning: the mixture out of a filter enters a spinning component, and is sprayed from a spinneret plate through the spinning component to be formed by winding, and then, needed PBT color spinning yarns can be obtained.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, in particular to a synthesis method of PBT color spinning. Background technique [0002] PBT is polybutylene terephthalate, also known as polytetramethylene phthalate, which is a thermoplastic engineering material. Polybutylene terephthalate is crystalline, with a melting point of 224°C, a relative density of 1.31~1.55, and one of the lowest water absorption rates among thermoplastics, 0.07%. It has excellent toughness, fatigue resistance, impact strength, self-lubrication and wear resistance, small friction coefficient, but high notch sensitivity. Good heat and weather resistance, flame retardant, but slow burning. Good dimensional stability, excellent electrical properties, good arc resistance. However, the volume resistivity high frequency dielectric loss tangent is large. There is no report about PBT color spinning in the prior art. Contents of the invention [0003] The obje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01D5/10
Inventor 周仁忠
Owner YIZHENG XINGHAI CHEM FIBER