Clothes with good moisture absorption are beneficial to maintaining the heat balance of the human body in summer or winter. The inner clothing has good moisture absorption, which is conducive to the evaporation of skin moisture The outer clothing material should also have good moisture absorption. The moisture absorption and dehumidification process of clothing fiber is related to the relative humidity of the surrounding air. In winter, the outdoor relative humidity is higher than that of the indoor. The outer clothes absorb the water vapor in the environment, and the humidity is relatively high. In the process of moisture absorption, the water vapor condenses on the outer clothes. Due to the heat released in the condensation process, the temperature of the outer clothes increases, which can prevent the human body from losing a large amount of heat in a short time and reduce the degree of cold stress when staying outdoors.

服裝的防風性強俗話說"寒風刺骨"，風透入衣服內.擾亂了衣料紗線之間和衣下氣層的靜止空氣，甚影響紡織纖維中死腔空氣的隔熱特性,增加了對流散熱,減少了服裝的隔熱值。所以冬季服裝的外層應選擇致密、透氣性小的材料,例如呢絨.毛皮和革制品等.

Clothing has strong wind resistance. As the saying goes, "the cold wind is biting", and the wind penetrates into the clothing It disturbs the still air between the clothing yarns and the air layer under the clothing, and even affects the heat insulation characteristics of the dead cavity air in the textile fiber, increases the convective heat dissipation and reduces the heat insulation value of the clothing. Therefore, the outer layer of winter clothing should be made of dense and low permeability materials, such as wool Fur and leather products, etc

冬季工作服以防寒防凍為主,服裝的保溫性是一位的。應當選擇導熱系數小的衣料.因為空氣的導熱系數小,所以導熱系數小的紡織材料其纖維中固有的死腔空氣多.比較蓬松,柔軟,重量輕.動物絨毛如羊毛,駝毛、鴨絨等是保暖性好的材料.氯綸的保暖性比棉花高50%,所以.氯綸膨體紗也是一種很好的保暖材料。

Winter work clothes are mainly cold proof and antifreeze, and the thermal insulation of clothes is a priority. First of all, clothing materials with low thermal conductivity should be selected Because the thermal conductivity of air is small, textile materials with small thermal conductivity have more dead cavity air in their fibers It is fluffy, soft and light in weight Animal hair, such as wool, camel hair and duck down, is a good material for keeping warm The warmth retention of nylon is 50% higher than that of cotton, so Expanded nylon yarn is also a good thermal insulation material.

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