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校服選擇含棉織物的校服，因?yàn)檫@種校服具有以下特點(diǎn)：
School uniforms with cotton fabric are selected because they have the following characteristics:
1、吸濕性：棉纖維具有較好的吸濕性，在正常的情況下，纖維可向周圍的大氣中吸收水分，其含水率為8-10%，所以它接觸人的皮膚，使人感到柔軟而不僵硬。如果棉布濕度增大，周圍溫度較高，纖維中含的水分量會(huì)全部蒸發(fā)散去，使織物保持水平衡狀態(tài)，使人感覺(jué)舒適。
1. Hygroscopicity: cotton fiber has good hygroscopicity. Under normal circumstances, the fiber can absorb water into the surrounding atmosphere, with a moisture content of 8-10%, so it contacts people's skin and makes people feel soft but not stiff. If the humidity of cotton cloth increases and the surrounding temperature is high, all the water content in the fiber will evaporate and disperse, so as to keep the fabric in water balance and make people feel comfortable.
2、保濕性：由于棉纖維是熱和電的不良導(dǎo)體，熱傳導(dǎo)系數(shù)極低，又因棉纖維本身具有多孔性，彈性高優(yōu)點(diǎn)，纖維之間能積存大量空氣，空氣又是熱和電的不良導(dǎo)體，所以，純棉纖維紡織品具有良好的保濕性,穿著純棉織品服裝使人感覺(jué)到溫暖。
2. Moisture retention: because cotton fiber is a bad conductor of heat and electricity, the thermal conductivity is very low, and because cotton fiber itself has the advantages of porosity and high elasticity, a large amount of air can be accumulated between fibers, and air is a bad conductor of heat and electricity, pure cotton fiber textiles have good moisture retention, and people feel warm wearing pure cotton fabrics and clothes.
3、耐熱性：純棉織品耐熱能良好，在攝氏110℃以下時(shí),只會(huì)引起織物上水分蒸發(fā),不會(huì)損傷纖維,所以純棉織物在常溫下,穿著使用,洗滌印染等對(duì)織品都無(wú)影響,由此對(duì)提高了純棉織品耐洗耐穿服用性能。
3. Heat resistance: pure cotton fabric has good heat resistance. When the temperature is below 110 ℃, it will only cause water evaporation on the fabric and will not damage the fiber. Therefore, the wearing, washing, printing and dyeing of pure cotton fabric at room temperature have no impact on the fabric, which improves the washing, wearing and wearing performance of pure cotton fabric.
4、耐堿性：棉纖維對(duì)堿的抵抗能力較大，棉纖維在堿溶液中，纖維不發(fā)生破壞現(xiàn)象，該性能有利于服用后對(duì)污染的洗滌，消毒除質(zhì)，同時(shí)也可以對(duì)純棉紡織品進(jìn)行染色、印花及各種工藝加工，以產(chǎn)生更多棉織新品種。
4. Alkali resistance: cotton fiber has great resistance to alkali. When cotton fiber is in alkali solution, the fiber will not be damaged. This performance is conducive to the washing, disinfection and quality removal of pollution after taking. At the same time, it can also dye, print and process pure cotton textiles, so as to produce more new cotton varieties.
5、衛(wèi)生性：棉纖維是天然纖維，其主要成分是纖維素，還有少量的蠟狀物質(zhì)和含氮物與果膠質(zhì)。純棉織物經(jīng)多方面查驗(yàn)和實(shí)踐，織品與肌膚接觸無(wú)任何刺激，無(wú)負(fù)作用，久穿對(duì)人體有益無(wú)害，衛(wèi)生性能良好。
5. Hygiene: cotton fiber is a natural fiber. Its main component is cellulose, as well as a small amount of waxy substances, nitrogen-containing substances and pectin. The pure cotton fabric has been inspected and practiced in many aspects. The contact between the fabric and the skin has no stimulation and negative effect. It is beneficial and harmless to the human body for a long time, and has good hygienic performance.
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