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Industrial test method for the elasticity of ptt/pet self-crimping yarn

A self-crimping and self-crimping technology is used in the application of stable tension/pressure to test the strength of materials and the preparation of test samples. To improve the accuracy of experiments, reduce the number of experiments, and save the cost and time of experiments

Inactive Publication Date: 2018-04-20
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the test volume of a single filament test is large, and the dry heat treatment operation of a single multifilament is very inconvenient. During dry heat treatment, tension must be added to each filament, otherwise several adjacent multifilaments will be entangled in the movement caused by thermal shrinkage. stick

Method used

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  • Industrial test method for the elasticity of ptt/pet self-crimping yarn
  • Industrial test method for the elasticity of ptt/pet self-crimping yarn
  • Industrial test method for the elasticity of ptt/pet self-crimping yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Raw material: PTT / PET self-crimping filament, linear density 166.7dtex, number of filaments 64, component ratio 50 / 50.

[0056] (1) Wind the PTT / PET self-crimping filament into skeins by using the YG086C skein length measuring machine. 100cm. 10 bobbins are randomly selected from each batch of samples, and each bobbin is wound with 1 skein.

[0057] (2) Carry out dry heat treatment to the skein, the dry heat treatment process is: constant temperature treatment at 120° C. for 8 minutes.

[0058] (3) Carry out tensile test to the skein sample after heat treatment with a special skein stretching column, and the test obtains the load-elongation curve of the skein, see Figure 5 , Test conditions: clamping distance 100mm, tensile speed 100mm / min.

[0059] (4) On the tensile curve of the skein, take the stress 0.01cN / dtex as the starting point of the elastic elongation of the skein, and make a straight line parallel to the starting point and the breaking point of the skein...

Embodiment 2

[0062] Raw material: PTT / PET self-crimping filament, linear density 166.7dtex, number of filaments 48, component ratio 50 / 50.

[0063] Referring to Example 1, PTT / PET self-crimping filaments were made into skeins, heat treated and tensile tested.

[0064] The average value of elastic elongation of PTT / PET self-crimping skein is 65.91%, and the coefficient of variation is 4.70%.

Embodiment 3

[0066] Raw material: PTT / PET self-crimping filament, linear density 166.7dtex, number of filaments 72, component ratio 40 / 60.

[0067] Referring to Example 1, PTT / PET self-crimping filaments were made into skeins, heat treated and tensile tested.

[0068] The average value of elastic elongation of PTT / PET self-crimping skein is 60.72%, and the coefficient of variation is 2.45%.

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Abstract

The invention relates to a method for measuring the elasticity of a skein of PTT / PET self-curling yarn, which is characterized in that it comprises the following steps: the first step, making the skein of self-curling yarn; the second step, performing dry heat treatment on the skein ; The third step, skein tensile test; the fourth step, elastic elongation calculation. The beneficial effects of the present invention are: (1) can accurately predict the elastic performance of self-crimping silk in the fabric at the fiber stage, greatly saves the experimental cost and time compared with the method of testing the elasticity after the current trial fabric; (2) simple operation, It can be conveniently used in industrial production; (3) the elastic elongation of skeined wire is greatly improved compared with that of monofilament, which can reduce the number of experiments and improve the accuracy of experiments.

Description

technical field [0001] The invention relates to the field of textile fiber testing, in particular to an industrialized testing method for the elasticity of PTT / PET side-by-side composite self-crimping filaments. Background technique [0002] Since the advent of PTT / PET crimped yarn, elastic textile fabrics have developed by leaps and bounds, and the production technology of bicomponent composite yarn has also developed by leaps and bounds. At present, PET and modified polyester side-by-side composite yarns are also similar. There are obvious differences in the elasticity and other properties of side-by-side composite yarns with different polymers, different cross-sectional shapes, and different component ratios. [0003] PTT / PET self-crimping yarn is made of side-by-side composite spinning of PTT (polytrimethylene terephthalate) and PET (polyethylene terephthalate). Due to the different shrinkage and modulus of the PTT and PET component materials in the fiber under the same...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N1/28
Inventor 王府梅杨竹丽王成罗胜利聂凤明
Owner DONGHUA UNIV
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