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Polyester fiber and method for preparing same

A technology of polyester fiber and manufacturing method, applied in the field of high-strength and low-modulus polyester fiber and its manufacturing, can solve the problems of passenger injury, rigid seat belt, low modulus elongation, etc., to protect safety, reduce heat Effects of Deformation and Strength Reduction, Wear Resistance and Thermal Strength Retention Rate

Inactive Publication Date: 2013-03-06
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when such polyester fibers with high modulus and low elongation are used as raw yarns for seat belts, not only the sliding efficiency for reducing friction generated when mounted on automobiles is significantly reduced, but also the The problem of passenger injury due to the stiffness of the seat belt itself in the event of a collision

Method used

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  • Polyester fiber and method for preparing same
  • Polyester fiber and method for preparing same
  • Polyester fiber and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0070] After melt-spinning a polyester polymer having a predetermined intrinsic viscosity, cooling it to produce an undrawn polyester yarn, and then heat-treating the undrawn yarn at a prescribed draw ratio to produce a polyester fiber. At this time, the intrinsic viscosity of the polyester polymer, the spinning speed, the spinning tension, the spinning temperature conditions, the draw ratio, and the heat treatment temperature during the melt spinning process are shown in Table 1 below, and other conditions follow the guidelines for the production of polyester. Normal conditions for fibers.

[0071] Table 1

[0072] Classification

Example 1

Example 2

Example 3

Example 4

Example 5

Intrinsic viscosity of chips (dl / g)

1.05

1.07

1.12

1.18

1.2

Spinning temperature (°C)

283

290

293

295

295

stretch ratio

5.7

5.6

5.5

5.4

5.3

Heat treatment temperature (°C)

240

...

manufacture example 1~5

[0105] Using the polyester fibers produced in Examples 1 to 5, after weaving a webbing with a narrow loom, a seat belt sample was produced through a dyeing process, and the performance was measured by the following method.

[0106] A) Evaluation of wear resistance by hexagonal bar

[0107] The wear resistance of the safety belt samples passed through a hexagonal bar was measured and evaluated in the following manner.

[0108] First, attach the seat belt sample to the figure 2 In the experimental device shown, a weight with a weight of 2.35±0.05kg is suspended on one end of the sample, while the other end straddles the hexagonal rod and is fixed on the vibrating drum. The sample was subjected to 2500 reciprocating frictions at the two corners of the hexagonal bar at 30 ± 1 time per minute and a stroke of 330 ± 30 mm, and then the tensile strength and strength retention of the sample were measured using a universal material testing machine (Instron). At this time, the once-us...

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Abstract

The present invention relates to industrial high-strength polyester fiber to be used in a seatbelt, webbing, and the like. More particularly, the present invention relates to polyester fiber and to a method for preparing same, wherein the polyester fiber has an elongation of 0.5% or higher at a stress of 1.0 g / d measured at room temperature, an elongation of 4.3% or higher at a stress of 4.0 g / d, and an elongation of 7.5% or higher at a stress of 7.0 g / d. The polyester fiber of the present invention is optimized to have high strength, a low modulus and high elongation, thus ensuring superior mechanical physical properties. Therefore, a seatbelt having superior shock-absorbing properties and significantly improved wear resistance and heat-aged breaking strength retention can be prepared from the polyester fiber of the present invention.

Description

technical field [0001] The present invention relates to industrial high-strength polyester fibers used in seat belts, etc., and a manufacturing method thereof, and more specifically, to high-strength polyester fibers having excellent mechanical properties and abrasion resistance, heat-resistant strength retention, impact absorption performance, etc. Low modulus polyester fiber and method for its manufacture. Background technique [0002] Polyester, represented by polyethylene terephthalate (hereinafter referred to as "PET"), is widely used for fibers, films, and resins due to its excellent mechanical strength and chemical resistance. In the case of fibers, for example, they are not only used for medical purposes, but are also widely used in the field of industrial materials as reinforcement materials for rubber products such as tire cords, belts, and hoses. [0003] Among such polyester fibers for industrial materials, high-strength polyester fibers mainly composed of polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D01F1/02
CPCD01D5/16D01F6/62C08G63/183D10B2331/04D03D1/0005Y10T428/298Y10T442/3976D01D5/098D01D10/02D01F1/10D02J1/22
Inventor 金宁照金基雄安秉煜李相牧李英洙
Owner KOLON IND INC
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