Wave after wave of cold waves followed, and down jackets became a necessity for people to keep warm from the cold. Zhejiang University has developed a "polar bear hair material" called EAF, which is 5 times more efficient than down jackets.
1. Learn about the "polar bear hair material" EAF
The new material, inspired by polar bears and mimicking the structure of polar bear hair, has been featured in the authoritative scientific journal Science for its warmth and functionality.
The researchers tested the thermal insulation performance of EAF when it was not processed into sweaters and compared it to three materials, nylon, polyester and wool, and found that EAF was more insulating.
Then I compared EAF and down, and found that the insulation effect of the two was similar, but the thickness of EAF was only 1/5 of that of down, that is: EAF was 5 times warmer than down jackets!
In addition to being light and warm, EAF also has good washing resistance and stretch resistance, and even if it is stretched, it will not cause the loss of thermal insulation effect, which is equivalent to a "black technology material" with full functionality and strong strength.
In addition, EAF material also has the advantages of easy dyeing, easy weaving, and comfortable wearing, which means that it is very suitable for clothing materials.
2. 3 kinds of "cost-effective" clothes, the warmth is not inferior to the down jacket
In fact, in addition to the polar bear sweater made of EAF material, the warmth of these 3 clothes is no worse than that of a down jacket, and the price is much more affordable than the current down jacket.
(1) Jacket
With the rising price of down jackets, taking advantage of the popularity of the outdoor wind in the mountains, the jacket has become the "new top stream" of winter wear, and has advanced to "Internet celebrity item".
Ordinary hard shell, with excellent windproof, waterproof and moisture permeable effect, can cope with harsh outdoor environment and climate, wear-resistant, strong flexibility, the main one is practical.
In recent years, the popular "three-in-one jacket" is composed of a hard shell + inner tank to achieve the effect of "one clothes and three wears", plus the inner layer of fleece or down material, the warmth is not inferior to the down jacket or even better.
From a fashion point of view, the jacket will not look bloated and swollen like a down jacket, and the outdoor style is practical and beautiful, which is not only the best "medical beauty" for boys, but also an "artifact" for girls to dress cool.
(2) Cotton clothing
Before there were down jackets, people have always worn cotton clothes to keep warm, and their prices are affordable and the warmth is also good.
The main fillers of cotton clothing are cotton, wool blend, polyester fiber, etc., and most of the cotton clothing on the market are mainly sprayed cotton and silk cotton.
The production process of silk cotton is similar to that of down jackets, and a layer of bile cloth needs to be placed, compared with spray cotton, the price and warmth of silk cotton are higher.
For example, this year's popular military coats and flower cotton jackets are actually "cotton clothes", as well as the "provincial clothes" of Hunan Province, as well as the sleeping jackets worn by people in some southern regions at home in winter, etc., are also a kind of cotton clothing, focusing on high cost performance, dozens of yuan a piece, much cheaper than down jackets.
(3) Fur coats
Commonly known as "mink", the fur coat is one of the "Three Treasures of the Northeast", which can withstand the severe cold of minus twenty or thirty degrees, and the warmth can be comparable to that of a down jacket.
Made of animal fur, such as mink, fox or Persian lambskin, the fur is designed to block the cold air from the outside, and the internal insulation layer also has a temperature-locking effect, so you don't have to worry about getting cold when you go out in winter.
However, with the enhancement of people's awareness of environmental protection, as well as various reasons such as difficult maintenance and depreciation, the fur coat has gradually fallen off the altar, and the price is not as big as before, tens of thousands of dollars can be bought, and few people will choose it.
3. Summary at the end of the article
The rising price of down jackets, coupled with the birth of new materials with better warmth than down, may usher in a challenge in the near future, and the popularity of military coats and flower jackets this year is a harbinger.
(The picture comes from the Internet, if there is any infringement, it will be deleted immediately)