Dry goods│The unit and conversion relationship of textile testing items are al

The test result is composed of test data and units! There are sometimes many choices for this unit, and the inconsistency of the units used will inevitably lead to differences in the representation of the detected values. Therefore, knowing the units used by the testing items will help us to understand the testing more accurately. Below I will briefly sort out the common inspection items and the conversion relationship between units.

 

Color fastness regular items

The color fastness rating is mainly based on the gray scale color card.

Grayscale swatches are:

American (AATCC) standard gray card

International (ISO) Standard Gray Card

Japan (JIS) Standard Gray Card

China (GB) Standard Gray Card

The gray card has a total of 5 grades and 9 grades; they are grades 1, 2, 3, 4, and 5, of which grade 5 is the highest and grade 1 is the lowest, and the middle half grade can be assessed.

Except AATCC adopts 3.0, 3.5 decimal point representation; ISO, JIS, GB all use 3, 3-4 "-" representation.

【Color fastness to light】:

ISO, GB, JIS standard:

The rating is compared with the rating of the corresponding blue standard wool cloth exposed to the sun as the test result. The blue label wool cloth is divided into grades 1-8. In principle, the test samples are exposed to the sun together with the blue label of the corresponding grade. Taking level 4 as an example, the result should be > level 4, = level 4, < level 4.

AATCC standard: The rating is still based on the contrast gray sample card, and the result indicates the same color fastness as the conventional AATCC method.

Physics Project

【 Tensile strength 】

【Tear strength】

Common units: Newtons (N, ), kilograms (Kg), pounds (Lbf, LBS) ten times Newtons (DaN)

Conversion relationship:

1DaN = 10 N , DaN = deca Newton

1Kg = 1000 g = 9.8 N = 2.2 Lbf(s)

【Seam slippage】

1. Fixed load method

Common units: millimeters (mm) or centimeters (cm)

Conversion formula: 1cm = 10 mm

Second, the fixed slip method

Common units: Newton (N, ), kilogram (Kg), pound (Lbf, LBS) ten times Newton (DaN)

Conversion relationship:

1DaN = 10 N , DaN = deca Newton

1Kg = 1000 g = 9.8 N = 2.2 Lbf(s)

【 Peel off strength 】

Common units: Newtons (N, ), kilograms (Kg), pounds (Lbf, LBS) ten times Newtons (DaN)

Conversion relationship:

1DaN = 10 N , DaN = deca Newton

1Kg = 1000 g = 9.8 N = 2.2 Lbf(s)

【 Bursting strength 】

The bursting strength is divided into two ways:

Diaphragm bursting strength:

Commonly used units: kilopascals (KPa), millimeters of mercury (mmHg), millibars (mBar)

Conversion relationship:

1 KPa = 7.5 mmHg = 10 mBar

1 KPa = 1000 Pa

The marble topping method:

Common units: Newtons (N, ), kilograms (Kg), pounds (Lbf, LBS) ten times Newtons (DaN)

Conversion relationship:

1DaN = 10 N , DaN = deca Newton

1Kg = 1000 g = 9.8 N = 2.2 Lbf(s)

【 Single yarn strength 】

Commonly used units: gram force (gf), Newton (N), centi Newton (cN)

Conversion relationship:

1 gf = 0.01 N = 0.1 c [N

1 N = 10 cN

【Abrasion Resistance Test 】

Common unit: revolutions

【 stretch recovery 】

Common unit: percentage %

【 Crease recovery angle 】

Common unit: angle °

【 Pilling 】

Compared with the standard rating sample card, 5 is the best and 1 is the worst.

Common unit: level

【 Anti-drilling down property 】

Count the number of down roots that run out.

Common unit: root

【 Anti-seize test 】

Compared with the standard rating sample card, 5 is the best and 1 is the worst.

Common unit: level

【 Waterproof Test 】

Surface water repellency:

Compared with the standard sample card, 5 is the best, 1 is the worst, and the middle half can be rated.

ISO, GB, JIS methods: 1, 2, 3, 4, 5

AATCC method: 50, 70, 80, 90, 100 points

【 Hydrostatic pressure 】

Common units: kilopascal (Kpa), centimeter water column (cmH2O), millimeter water column (mmH2O), millibar (mbar)

Conversion relationship:

1 kPa = 10 cmH2O = 100 mmH2O = 10 mbar

 

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