In the fabric, the lower the fiber thermal conductivity, the less heat loss of the fiber itself. Therefore, the low thermal conductivity improves its thermal function. As can be seen from the above, the thermal conductivity of polypropylene fiber is the lowest, so its warmth is better than other fibers.
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Polypropylene for thermal underwear
One of the inherent properties of polypropylene is that it retains heat better in all fibers. When the air thermal conductivity is 1, the thermal conductivity values of various fibers are as follows:
Polypropylene vinylon silk polyester wool acrylic polyamide viscose cotton
6.0 6.4 7.0 7.3 8.0 8.0 10.0 11.0 17.5
In the fabric, the lower the fiber thermal conductivity, the less heat loss of the fiber itself. Therefore, the low thermal conductivity improves its thermal function. As can be seen from the above, the thermal conductivity of polypropylene fiber is low, so its warmth is better than other fibers.
Polypropylene fiber woven in the underwear layer and cotton and other fabrics, because it is the polymerization of hydrocarbon elements, at the same time is the original solution dyeing, to avoid harmful substances in the post-dyeing and finishing effect, so it has good skin affinity; In addition, polypropylene fiber is the true non-hydrophilic fiber, so sweat cannot be attached to it, which can effectively export the moisture generated by the human body to the outer layer of cotton and other fabrics to dissipate, so as to achieve a dry feeling and avoid the breeding of bacteria in the fabric; There are also the following advantages:
1, thermal underwear with polypropylene fiber light fiber: polypropylene fiber density is smaller, weight is 40% lighter than cotton, 30% lighter than polyester, gentle lubrication;
2, thermal underwear with polypropylene fiber is warmer than wool fiber: polypropylene fiber thermal conductivity is the existing natural fibers and synthetic fibers are lower, the heat loss rate is low
3, thermal underwear with polypropylene silk color fastness is good: the color fastness is unmatched by other fibers after dyeing and finishing;
4, thermal underwear with polypropylene silk environmental protection fiber: polypropylene fiber is made of hydrocarbon polymerization, so it has good skin affinity, can be completely decomposed naturally, combustion will not produce harmful gases.
