Measuring apparatus for fabric dynamic heat and moisture transmission characteristic

A measuring device and technology for heat and moisture transfer, applied in measuring devices, textile testing, material thermal development, etc., can solve problems such as the inability to adjust the temperature of the human body and the inability to determine the heat and moisture transfer performance of fabrics

Active Publication Date: 2008-04-30
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the method of this patent cannot be used to measure the dynamic and instantaneous human body temperature adjustment, especially the heat and moisture transfer performance of the fabric from non-dominant sweating to dominant sweating cannot be determined.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Measuring apparatus for fabric dynamic heat and moisture transmission characteristic
  • Measuring apparatus for fabric dynamic heat and moisture transmission characteristic
  • Measuring apparatus for fabric dynamic heat and moisture transmission characteristic

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0094] Typical measurement curves are summarized in Figures 5 to 7, respectively. Figure 5 shows the measurement results of the upper surface of the biomimetic skin layer; Figure 6 shows the measurement results of the bottom surface of the fabric next to the biomimetic skin layer; Figure 7 shows the measurement results of the upper surface of the fabric in contact with the environment. The whole measurement process is divided into six sections, detailed as follows:

[0095] The first stage: dynamic contact process (0→t 1 ): The temperature from when the sample is placed on the measuring disc until the temperature on the skin reaches a stable temperature (t1) at the time of involuntary perspiration. At this stage, it is used to simulate the process of wearing clothes. Since the ambient temperature is generally lower than the skin temperature, the temperature of the skin surface first gradually decreases and then gradually increases to a steady state, while the temperature of ...

example 2

[0145] Examples of measurement results on different fabric samples

[0146] To determine device performance, nanofunctional material-treated liquid water management functional fabrics will be used as samples. Based on the basic physical parameters of the fabrics found in Table 2, the general measurement results are shown in Fig. 7.

[0147] The basic physical properties of table 2MMF

[0148] fabric number

inclusions

structure

Thickness under 98 Pa pressure

(mm)

weight

(g / m 2 )

A

100% nano-processed

cotton denim

Woven fabric

0.796

182

[0149] Figure 8 is the measurement results of typical liquid water transfer characteristics of pure cotton twill fabric treated with nanomaterials. As shown in Figure 8, after liquid water reaches the bottom surface of the fabric, it can be quickly and easily transported to the upper surface and evaporated into the environment, so the water co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides an apparatus for measuring the dynamic thermal and moisture transfer of textile fabric, and comprises a bionics model component, at least a group of second sensors and a data collecting and controlling device. The bionics model component includes a heat retainer, a sweat discharging container arranged in the heat retainer and provided an open top, an upper cover which is provided with a plurality of through holes and positioned at the upper part of the sweat discharging container and supported by the heat retainer, a bionics skin layer which is arranged on the upper surface of the upper cover and contacted with the textile fabric sample to be measured and is made of the material capable of penetrating liquid and dispersing liquid on the surface, at least a group of first sensors arranged in the bionics skin layer, and a heating device arranged around the sweat discharging container. The second sensors are arranged on the contact surface between the textile fabric sample to be measured and the environment and or / between the textile fabric sample to be measured and the bionics skin layer. The data collecting and controlling device is connected with the first sensors, the second sensors and the heating device.

Description

technical field [0001] The invention relates to a measuring device for dynamic heat and moisture transfer characteristics of fabrics, in particular to a device for measuring dynamic heat and moisture transfer of fabrics during dynamic or static perspiration in the range from imperceptible perspiration to liquid perspiration characteristic measuring equipment. Background technique [0002] The dynamic heat and moisture transfer characteristics of clothing are playing an increasingly important role in the modern market, and significantly affect the competitiveness of clothing manufacturing enterprises. At the same time, the thermal and humidity comfort feeling of clothing and the overall comfort feeling after wearing are very complex subjective feelings, which are related to the interaction among factors such as fabric, climate, physiology and psychology. Previous studies have shown that the overall comfort of human clothing is closely related to the thermal and moisture comf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/36G01N21/00G01N25/20
Inventor 李毅胡军岩王树晓杨国荣毛永范
Owner THE HONG KONG POLYTECHNIC UNIV
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