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Method for online detection of polyester staple fiber shrinkage in boiling water

A technology of polyester staple fiber and boiling water shrinkage rate, which is applied in the field of on-line detection of the boiling water shrinkage rate of polyester staple fiber, can solve the problems of judgment deviation, difficulty in accurately characterizing the boiling water shrinkage performance of polyester staple fiber, etc., to achieve the best detection accuracy and ensure authenticity. , the effect of increasing realism

Active Publication Date: 2013-02-06
福建鑫华股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an online detection method for the boiling water shrinkage of polyester staple fiber, so as to solve the problem in the prior art that it is difficult to accurately characterize the boiling water shrinkage of polyester staple fiber and cause judgment deviation

Method used

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  • Method for online detection of polyester staple fiber shrinkage in boiling water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Select an 80cm polyester staple fiber sample after the relaxation heat setting process and before the cutting process, and carry out pre-conditioning for 2 hours under the conditions of standard atmospheric pressure, 40°C-45°C, and humidity 15%-20%, and then pre-conditioning Afterwards, the sample is placed under the conditions of standard atmospheric pressure, 18°C-20°C, and humidity of 65%-70% for 2 hours of humidity-conditioning treatment.

[0041] 2. Select a bunch of polyester staple fibers with a length of 60cm and a fineness of 50D from the samples that have reached the moisture absorption balance after pre-humidity and humidity-conditioning treatment, and use a pre-tensioning force of Clamped by a 5cm pre-tension clamp, the length L0 of the polyester staple fiber before boiling is measured by a vertical measuring ruler and marked.

[0042] 3. Fold the sample in half to a loose state, wrap it in gauze and place it in the test mesh bag. When the water temperatu...

Embodiment 2

[0046] 1. Select an 80cm polyester staple fiber sample after the relaxation heat setting process and before the cutting process, and carry out pre-conditioning for 1 hour under the conditions of standard atmospheric pressure, 45°C-50°C, and humidity 15%-20%, and then pre-conditioning Afterwards, the samples were placed under the conditions of standard atmospheric pressure, 18°C-20°C, and humidity of 65%-70% for 4 hours of humidity-conditioning treatment.

[0047] 2. Select a bunch of polyester staple fibers with a length of 70cm and a fineness of 100D from the samples that have reached the moisture absorption balance after the pre-humidity and humidity-conditioning treatment, and use a pre-tensioning force of 10cm pre-tension clamp clamps, measures and marks the length Lo of the polyester staple fiber before boiling by a vertical measuring ruler.

[0048]3. Place the sample in the test mesh bag with gauze wrapped in the relaxed state. When the water temperature is 60°C, immers...

Embodiment 3

[0052] 1. Select an 80cm polyester staple fiber sample after the relaxation heat setting process and before the cutting process, and carry out pre-conditioning for 2 hours under the conditions of standard atmospheric pressure, 40°C-45°C, and humidity 20%-25%, and then pre-conditioning Afterwards, the samples were placed under the conditions of standard atmospheric pressure, 18°C-20°C, and humidity of 65%-70% for 4 hours of humidity-conditioning treatment.

[0053] 2. Select a bundle of polyester staple fibers with a length of 60cm and a fineness of 100D from the samples that have reached the moisture absorption balance after pre-humidity and humidity-conditioning treatment, and use a pre-tensioning force of 10cm pre-tension clamp clamps, measures and marks the length Lo of the polyester staple fiber before boiling by a vertical measuring ruler.

[0054] 3. Place the sample in a test mesh bag with gauze wrapped in a relaxed state. When the water temperature is 75°C, immerse the...

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Abstract

The invention discloses a method for online detection of polyester staple fiber shrinkage in boiling water. Polyester staple fiber samples are selected to reach moisture absorption balance through pre-wetting and wetting processes, at least 6 polyester staple fibers in the samples which reach moisture absorption balance are selected to be put in a neutral or weak alkaline aqueous medium at a specific temperature and are heated until boiling according to a specific heating rate, and the boiling state is kept for 30-40 minutes, so that the samples can fully shrink; and the samples are dried and put at standard atmospheric pressure to be balanced, and the lengths of the shrunk samples are measured and are compared with the lengths before shrinkage to calculate the polyester staple fiber shrinkage in boiling water. By the method for testing, the influences of factors of different types and contents of additives, different polyester staple fiber processing technologies and other factors to the polyester staple fiber shrinkage in boiling water can be eliminated during the polyester staple fiber production process, a measurement result has good repeatability, the evaluation is in accordance with the self characteristics of fibers, and the method has an active guiding meaning to production and is worthy of being widely popularized.

Description

technical field [0001] The invention relates to the field of on-line detection methods, in particular to an on-line detection method for the boiling water shrinkage of polyester staple fibers. Background technique [0002] Boiling water shrinkage is an important performance index of polyester staple fiber. The existing detection of boiling water shrinkage of polyester staple fiber is in accordance with GB / T6505-2001 "Test method for heat shrinkage of synthetic fiber filament" or according to the international chemical fiber The BISFA standard promulgated by the Bureau of Standards calculates the boiling water shrinkage by testing the length of the sample before and after treatment under the specified pre-tensioning conditions. [0003] GB / T6505-2001 and the BISFA standard promulgated by the International Chemical Fiber Standards Bureau both place the fiber sample directly in boiling water at 100°C for 25-35 minutes, measure the length change of the sample before and after th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/28
Inventor 王宝荣吴端田雨胜
Owner 福建鑫华股份有限公司
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