A kind of lightweight thermal fiber and preparation method thereof

A heat-retaining fiber and lightweight technology, which is applied in the direction of fiber processing, fiber type, fiber chemical characteristics, etc., can solve the problems of fiber extrusion speed difference, inconsistent pressure drop, and affect the smooth progress of fiber spinning processing, so as to improve the strength, Improved compatibility and excellent thermal stability

Active Publication Date: 2021-03-19
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the polyester melt is a non-Newtonian fluid and is a viscoelastic fluid, it will undergo elastic deformation and form a certain pressure while viscous flowing in the spinneret hole. Therefore, the polyester melt will flow out of the spinneret hole A certain pressure drop is generated, and the shape, size, length and relationship between the spinneret holes will have a great impact on the pressure drop. Existing research generally only considers the same shape or cross-sectional area of ​​the spinneret holes are equal, but the influence of shape, size and length is not involved, which will cause the pressure drop of the polyester melt to flow out from the different shapes of the spinneret holes of the same spinneret, so that the fibers with different cross-sections There is a difference in the extrusion speed between them, which affects the smooth progress of the fiber spinning process

Method used

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  • A kind of lightweight thermal fiber and preparation method thereof
  • A kind of lightweight thermal fiber and preparation method thereof
  • A kind of lightweight thermal fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A lightweight thermal fiber, the preparation method of which is:

[0067] (1) preparation of oiling agent for oiling;

[0068] Mix 2-hydroxymethyl-12-crown-4 with potassium dodecyl phosphate, trimethylolpropane laurate and sodium hexadecylsulfonate at room temperature and add to 12# mineral oil and uniformly stirred at 40°C for 2.5h to obtain an oil agent; the addition amount of each component is as follows in parts by weight: 5 parts of 12# mineral oil; 95 parts of 2-hydroxymethyl-12-crown-4; 12 9 parts of potassium alkyl phosphate; 2 parts of sodium hexadecyl sulfonate. The content of crown ether in the prepared oil is 85.58wt%. The oil has excellent high temperature resistance. After heat treatment at 200°C for 2 hours, the thermal weight loss is 9wt%. The viscosity of the oil is low. When the kinematic viscosity is 29.5mm 2 / s, the kinematic viscosity after the concentration of 10wt% emulsion is configured with water is 0.93mm 2 / s, the oil film strength of the ...

Embodiment 2

[0073] A lightweight thermal fiber, the preparation method of which is:

[0074](1) Preparation of oiling agent for oiling; 15-crown ether-5 and isomeric tridecyl alcohol polyoxyethylene ether phosphate potassium salt, trimethylolpropane laurate and sodium dodecylsulfonate are mixed at room temperature After mixing evenly, add it to 13# mineral oil and stir evenly at 52°C for 2 hours to obtain an oil agent; in parts by weight, the addition amount of each component is as follows: 10 parts of 13# mineral oil; trimethylolpropane lauric acid 5 parts of ester; 70 parts of 15-crown ether-5; 8 parts of isomeric tridecyl polyoxyethylene ether phosphate potassium salt; 6 parts of sodium dodecylsulfonate. The content of the crown ether in the prepared oil is 70.70wt%. The high temperature resistance of the oil is excellent. After heat treatment at 200°C for 2 hours, the thermal weight loss is 13.5wt%. The viscosity of the oil is low, at (50 ± 0.01) At ℃, the kinematic viscosity is 28.6...

Embodiment 3

[0079] A lightweight thermal fiber, the preparation method of which is:

[0080] (1) Oil preparation for oiling; 2-hydroxymethyl-15-crown-5 and potassium salt of tetradecyl phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate After mixing evenly at room temperature, add it to 11# mineral oil and stir evenly at 48°C for 3 hours to obtain an oil agent; in parts by weight, the addition amount of each component is as follows: 8 parts of 11# mineral oil; trimethylolpropane lauryl 10 parts of acid ester;

[0081] 2-Hydroxymethyl-15-crown-585 parts; Tetradecyl phosphate potassium salt 11 parts; Sodium pentadecylsulfonate 5 parts. The content of crown ether in the prepared oil is 70.83wt%. The oil has excellent high temperature resistance. After heat treatment at 200°C for 2 hours, the thermal weight loss is 11wt%. The viscosity of the oil is low. When the kinematic viscosity is 30.1mm 2 / s, the kinematic viscosity after the concentration is 10wt% emulsion configure...

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Abstract

The invention relates to a lightweight heat-preserving fiber and a preparation method thereof. The polyester melt is measured, extruded through a composite spinneret, cooled, oiled, stretched, heat-set and wound to obtain a lightweight heat-preserving fiber. The spinneret plate is equipped with hollow spinneret holes and circular spinneret holes at the same time, and the ratio of the micropore length of the hollow spinneret holes to the round spinneret holes is equal to the equivalent diameter of the hollow spinneret holes and the round spinneret holes The product of the ratio and the coefficient K, the equivalent diameter is the ratio of the cross-sectional area of ​​the spinneret hole to the circumference of the cross-section, the value range of the coefficient K is 0.97 to 1.03, the oil used for oiling contains crown ether, and crown The content of ether is 67.30-85.58wt%, and the weight of the prepared lightweight thermal fiber is 100g / m 2 The thermal conductivity of the knitted fabric is ≤0.150W / m·K. The method of the invention is simple and reasonable, and the prepared fiber has good light-weight, heat-retaining and moisture-absorbing and perspiration-releasing performances, and has excellent popularization value.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a lightweight heat-retaining fiber and a preparation method thereof. Background technique [0002] Since the appearance of polyethylene terephthalate (PET) fiber, it has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fiber in the world. PET fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric prepared by it has anti-wrinkle and With good stiffness and other advantages, it is widely used in the fields of fiber, bottle packaging, film and sheet, etc. The output is increasing year by year, and the industry status has been significantly improved. However, the existing PET fibers generally can only meet the requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/24D01D5/096D01F6/62D01F11/08D06M13/11D06M13/295D06M13/256D06M13/224D06M101/32
CPCD01D5/096D01D5/24D01F6/62D01F11/08D06M13/11D06M13/224D06M13/256D06M13/295D06M2101/32D01D5/082D06M13/165D06M13/02D06M13/292D01D5/12D01D5/088D01D10/02D01D7/00
Inventor 范红卫王山水尹立新王丽丽
Owner JIANGSU HENGLI CHEM FIBER
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