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Your location: Home > Related Articles > Fabric air permeability tester to detect bamboo charcoal polyester fiber fabric

Fabric air permeability tester to detect bamboo charcoal polyester fiber fabric

Author:QINSUN Released in:2023-08 Click:86

The fabric air permeability tester can be used to test the air permeability of bamboo charcoal polyester fiber fabrics. Qisnun Precision Electromechanical Technology Co., Ltd. is the manufacturer. Customers in need are encouraged to inquire.

Applicable standards:

GB/T 5453-1997, GB/T 13764, ASTM D737, ISO 9237, ISO 5636

Main parameters:

1. Pressure difference range: 0~4000Pa;

2. Measurable air permeability: 0.2-12826mm/s;

3. Measurement error: ≤±2%;

4. Measurable tissue thickness: ≤12mm;

5. Suction volume adjustment: Data feedback dynamic adjustment;

6 Fixed Value of Sampling Area Circle: 5cm2, 20cm2, 50cm2, 100cm2;

7. Nozzles: 11 in total.

Development sample:

According to the test plan, refer to the main types of polyester fiberwoven bamboo charcoal on the market The specifications of the fabric, the production of bamboo charcoal polyester fiber fabric sampleCables, warp tension, warp and weft tension during weaving should be properly controlled, otherwise the weaving effect will be affected, and the following points should be considered when weaving:

(1) As it is manual warping, try to achieve uniform warping tension and the warp length difference should not be too large, otherwise the opening will not be clear during weaving, which will easily cause the warp yarn breakage rate to increase and affect the test results.

(2) When weaving, if the warp tension is too large or too small, press the loom buttons to wind the fabric, turn the fabric, release the warp and rewind or click the scroll button on computer screen awith the mouse. Fabric, fabric shrink, warp release and rewind buttons to adjust the warp tension to an appropriate level.

(3) The weft thread tension should also be appropriate during weaving. If the tension is too high, it will be difficult for the lance to insert the weft; ,and the tension is too weak, it is difficult for the fabric to hold the weft yarn and cause the weft yarn to be cut continuously. Adjust the nut on the tension disk on the automatic weft break-stop device to make the tension of the weft thread moderate.

Test Results:

Air permeability of fabric is basically the process by which air from both sides of the fabric flows from the high pressure side through the fabric towards the low pressure side under a certain pressure difference. . Gas can pass through tissue in two main ways: one is through the interstices between theacement of the warp and weft threads of the fabric, and the other to cross the interstices between the fibres. Therefore, the air permeability of a fabric mainly depends on the size and number of voids in the fabric, and is also related to factors such as fiber properties, fabric geometry and finish.

In general, when the structure of the fabric is the same, the structural factors that affect the air permeability of the fabric are mainly The total tightness of the fabric, the warp and weft tightness ratio and the density linear warp and weft threads. Bamboo charcoal polyester fiber fabric samples under the same fabric structure and raw material thickness, fabric tightness becomes the main factor affecting air permeability.

With the increase of total tightness and weft tightness, the air permeability of the fabric shows a downward trend. Indeed, as the weft density of the fabric increases, the tightness of the yarn arrangement in the fabric increases, the overall tightness of the fabric increases, the void area of ​​the fabric decreases, and the gas channels formed between the yarns become more small, causing the air to flow perpendicular to the fabric. The viscous resistance increases, so the air permeability of the fabric decreases. But when the tightness increases to a certain level, the pores of the fibers of the yarn are already very small, and the increase in the density of the weft yarn can only increase the extrusion of the fabric on the yarn, while the pores change very little, and the decrease in air permeability is also reduced.

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