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Highly-fluffy down-like composite fiber and preparation method thereof

A composite fiber and feather-like technology, which is applied in the textile field, can solve the problem of low crimp shrinkage of composite fibers, and achieve the effect of improving the degree of self-crimping

Inactive Publication Date: 2018-10-09
福建省海兴凯晟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural difference between polyethylene glycol phthalate and polytrimethylene phthalate is small, the difference in heat shrinkage of components is small, and the crimp shrinkage of the prepared composite fiber is low, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 30% polyethylene terephthalate (PET) and 60% polyethylene terephthalate-1,4-cyclohexanedimethanol (PCT) were fully dried separately, and twin-screw extrusion Blending, adding 10% 1,4-cyclohexanedimethanol in the molten state, and then spinning through a special-shaped spinneret, two-layer ring blowing cold air drying to form, passing through a wire guide machine, and air amplifier drafting Ⅰ & Ⅱ , Nozzle oiling, tension heat setting, crimping machine, atomizing oiling, drying, loosening and emptying, cutting off.

[0023] The specific process settings are as follows: the twin-screw extruder is equipped with seven temperature zones, which are respectively set to 230°C, 245°C, 255°C, 260°C, 265°C, 275°C, and 285°C. The temperature of the spinning box is 278°C; The inner ring is cooled by blowing, and the liner is double-layer copper mesh. The temperature of the ring blowing is 25°C, and the speed of the ring blowing is 4.2m / s. Preferably, epoxy-modified silicone oil is u...

Embodiment 2

[0025] 45% polyethylene terephthalate (PET), 50% polyethylene terephthalate-1,4-cyclohexanedimethanol (PCT) were dried separately, twin-screw extrusion Mixing, adding 5% isophthalic acid in the molten state, and then spinning through the special-shaped spinneret, two-layer ring blowing cold air drying to form, passing through the guide wire machine, drawing Ⅰ & Ⅱ by the air amplifier, oiling the nozzle, Tension heat setting, curling machine, mist oiling, drying, loosening, cutting. The specific process settings are as follows: the twin-screw extruder is equipped with seven temperature zones, which are respectively set to 230°C, 245°C, 255°C, 260°C, 265°C, 275°C, and 285°C. The temperature of the spinning box is 278°C; The inner ring is cooled by blowing, and the liner is double-layer copper mesh. The temperature of the ring blowing is 26°C, and the speed of the ring blowing is 4.4m / s. Preferably, amino-modified silicone oil is used for two-step oiling, in which 10% dodecaneth...

Embodiment 3

[0027] 45% polyethylene terephthalate (PET), 58% polyethylene terephthalate-1,4-cyclohexanedimethanol (PCT) were dried separately, twin-screw extrusion Mixing, adding 7% 1,3-cyclohexanedimethanol in the molten state, and then spinning through a special-shaped spinneret, two-layer ring blowing cold air drying to form, passing through the wire guide machine, the air amplifier drafting Ⅰ & Ⅱ, Nozzle oiling, tension heat setting, crimping machine, atomizing oiling, drying, loosening and emptying, cutting. The specific process settings are as follows: the twin-screw extruder is equipped with seven temperature zones, which are respectively set to 230°C, 245°C, 255°C, 260°C, 265°C, 275°C, and 285°C. The temperature of the spinning box is 278°C; The inner ring is cooled by blowing, and the liner is double-layer copper mesh. The temperature of the ring blowing is 27°C, and the speed of the ring blowing is 4.6m / s. Preferably, epoxy-modified silicone oil and amino-modified silicone oil ...

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Abstract

The invention discloses a highly-fluffy down-like composite fiber and a preparation method thereof, and belongs to the technical field of textiles. The following technical scheme is adopted: the highly-fluffy down-like composite fiber is prepared from the following components in percentage by weight: 0 to 10 percent of a steric hindrance monomer, 30 to 50 percent of polyethylene glycol terephthalate and 40 to 70 percent of polyethylene terephthalate-1,4-cyclohexanedimethanol ester. The preparation method comprises the following steps: respectively drying two polyester chips, adding the sterichindrance monomer under a double-screw extruded molten state, spinning the mixture through a specially-shaped spinneret plate, blowing cold air through two layers of rings for drying and molding, guiding wires through a wire guiding machine, drafting the wires by an air amplifier preliminarily and secondarily, oiling a nozzle, performing tensioning and thermal setting, atomizing and oiling a crimping machine, and performing drying, fluffing, hollowing and cutting. The introduction of the steric hindrance monomer destroys the regularity of PCT and PET molecular chains and lowers the crystallization capacity of the fiber, so that the fiber is relatively high in thermal shrinkage performance; and in the specially-shaped spinning process, a three-dimensional crimping structure generated by anoutstanding difference between the thermal shrinkage performances of two components endows the fiber with excellent fluffiness and crimpiness.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a highly fluffy feather-like composite fiber and a preparation method thereof. Background technique [0002] Natural down fiber is a well-known thermal insulation material, which is widely used in the field of high-grade clothing and wadding, but due to its small quantity and high price, it is far from meeting people's increasing material life needs; and imitation down fiber, which belongs to three-dimensional curly hollow polymer Ester fiber treated with silicone, it can keep warm like natural down fiber, has good bulkiness, smooth and soft hand feeling, and can be compared with natural down fiber in terms of bulkiness and compression rebound, and it is not moldy or not. moth, the price is lower than natural fibers. [0003] At present, domestically developed down-like fibers are mainly superfine denier fibers and three-dimensional crimped hollow chemical fibers treated with s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F1/10
CPCD01F1/10D01F8/14
Inventor 欧阳文咸冯永生其他发明人请求不公开姓名
Owner 福建省海兴凯晟科技有限公司