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    Black Technology: Can Significantly Improve People'S "Warmth Index"

    2025/2/12 19:26:00 86

    ; Black Technology

    In cold winter, the choice of clothing materials is very important if you want to have both style and temperature. Nowadays, the "black technology" hidden in winter clothing can greatly improve people's "warmth index".

    The layering method is preferred for winter clothing, including the inner layer (foundation layer), middle layer (warm layer) and outer layer (isolation layer). Dressing should be like peeling onions. Each layer of clothing should be thin, so that a layer of cold air can be formed between clothes to keep warm.

    The inner layer should be made of breathable and fast drying materials such as cotton, silk or polyester fiber to reduce the heat taken away by sweat evaporation. It has to be mentioned here that graphene, a "black technology" material composed of carbon atoms, is widely used in thermal underwear. It has ultra-high thermal conductivity and can quickly disperse the heat emitted by the human body evenly. The antibacterial property of graphene can effectively inhibit the growth of bacteria during long-term wear. It also contains aerogel, which is filled with tiny pores, which can effectively block the entry of cold air and save body heat.

    The middle layer is the main heating layer, and materials with good thermal insulation performance such as fleece and wool can be used. Fleece fleece jacket is a star in the heat preservation industry. Some fleece fabrics with good heat preservation performance form layer after layer of fluff structure through special knitting process, which can wrap a lot of air and form a heat preservation barrier. According to professional tests, under the same thickness, the warmth retention performance of fleece jacket is about 40% higher than that of ordinary cotton clothes.

    The key to keeping warm in winter is to lock heat in the outer layer and strengthen protection. At present, down jacket is the main force of winter clothing. With the application of some "black technology" fabrics, many down jackets have excellent performance in windproof and rainproof, moisture permeability and ductility, and are favored by consumers. For example, the down jacket with nano waterproof coating technology not only has strong waterproof performance, water drops can slip off the surface of the clothing instantly, but also has 30% higher air permeability than the ordinary coating. Its fabric has excellent extensibility, which can stretch freely with body movements without any sense of bondage. Ski lovers can choose windproof, waterproof and breathable fabrics. The water vapor formed by sweat evaporation has an extremely delicate micropore structure, which is smaller than a water drop but larger than a water vapor molecule. Professional ski clothes need to not only block the outside snow water and cold wind, but also smoothly discharge the sweat generated by sports to keep the body dry and warm. (The author is a professor of Beijing Institute of Fashion Technology, interviewed by reporter Shi Fang)

    (Source: People's Daily)

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