Thermal manikin test-Thermal insulation property comparison of Y-warm cold proof

Time: 2020-01-21

Author: 叠加态

Page View: 250

Thermal manikin test


    Thermal manikin is a biophysical test method gradually developed since the1940s, which can be used as an instrument to simulate the heat and humidity exchange between human body and environment. It keeps similar size as average adult, and contains the following anatomical segments: hooks, chest, back, abdomen, hips, arms, hands, lower limb and foot etc. Meanwhile every part can be heated from inside, internal surface and external surface. Thermal manikin is widely used for testing in the field of clothing, occupational health, environment, fire protection, petroleum, traffic safety, aerospace, and construction and so on.


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Test institute: Soochow University


Thermal manikin tests of Y-warm cold proof clothing and goose down jacket were conducted by Soochow University Modern Silk National Engineering Laboratory.

Soochow University is a national key institute listed in the Project 211, a first-class member in the "2011 Program" and a top comprehensive university in Jiangsu Province. Textile related majors are national key 

disciplines.


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Introduction about laboratory


Soochow university artificial climate simulation and testing laboratory is equipped with artificial climate laboratory of Japan EPES and NEWTON thermal manikin of US northwestern testing technology corporation.


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Introduction of artificial climate simulation laboratory and thermal manikin test


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Thermal manikin test


Clothing wearing comfortability-Thermal manikin test, is to simulate human body clothing wearing, clothing structure, comprehensive factors of material performance, combined with the artificial climate laboratory setting temperature, humidity and wind speed test reference data of the simulation environment.


Step one


Test engineer sets temperature and relative humidity according to experimental requirements, and automatically starts equipment our hours in advance, so that the artificial climate laboratory is in a constant temperature and humidity condition.


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Step two


Put on inside clothing, gloves and socks provided by the laboratory to thermal manikin.


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Step three


Put on shoes and shirt provided by the laboratory to thermal manikin.


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Step four


Stabilization of control sample


After put on inside clothing, gloves, socks, shirt and shoes, thermal manikin need around 2 hours to get stable temperature and relative humidity.


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Step five


Wind speed setting

According to thermal manikin test standard-ISO15831-2004, wind speed is 0.4 m/s. However, in real life wind speed has huge influence on clothing thermal resistance, when wind speed increases by 1 m/s temperature drops by 2-3 centigrade. In order to simulate dress condition in real life wind speed was set at 3.2 m/s.


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Step six


Control sample test

Control sample test-Test thermal resistance of thermal manikin wearing inside clothing, gloves, socks, shirt and shoes.


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Test process graphs


Each sample test takes 35 minutes, with a mean of no less than 20 minutes of stable data. The graph is for better understanding test process.


Graph of 4 mins

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Graph of 15 mins 30 secs

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Graph of 25 mins 16 secs

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Graph of 34 mins 18 mins

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Garment test


Same style and same size outdoor jacket



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Y-warm jacket


Y-warm outdoor jacket-2 layers Y-warm are filled in between fabric and lining, total thickness is 4 mm + Cold proof trousers is made by 1 layer Y-warm.


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Goose down jacket


Down jacket-Goose feather weight 90 g (95% content, total thickness is 25 mm) + Cold proof trousers is made by 1 layer Y-warm.


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Conclusion


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4 mm thickness Y-warm jacket has similar thermal insulation property as 25 mm thickness goose down jacket.



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Beijing Y-warm technology co., ltd. was established on 13th Jun. 2019. Main business is research & development, production and sales of thermal insulation material.

Y-warm is a kind of flexible thermal insulation material, it’s thermal conductivity is extremely low, which can dramatically decrease heat conduction and energy exchange; additionally it has good moisture absorption and fast drying ability, which can easily permeate out sweat generated by human body, so the clothing made by it is more comfortable, lighter and has better thermal insulation efficiency.


Y-warm’s applied temperature range is from -50 to 150 centigrade, so it can be used as thermal insulation functional material in more than 20 industries, such as garment, tent, automotive, train, airplane, wall paper and curtain etc.. Y-warm is a kind of revolutionary material which can upgrade industries, save energy and protect environment. 





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