Technology In Life: After A Few Years, Wear One In Winter.

Maybe in a few years, the clothes we wear will change like this: raw materials no longer use petroleum products, and winter clothes do not need to wear thick down garments. Underwear can automatically prevent bacterial invasion.

These changes are not written on paper. Recently, Mei Ziqiang, academician of the Chinese Academy of engineering, told reporters about these changes.

But petroleum resources are non renewable resources, and synthetic fibers will pollute in the course of production and processing, and they will not be degraded after use.

Therefore, scientists have been looking for natural renewable materials to make up for these deficiencies.

Academician Mei, who has been engaged in textile technology for decades, briefed reporters that at present, there are several renewable resources that can be used to replace oil in the world.

This fiber has many advantages. First of all, it is harmless to the human body in the production process, and it can be degraded and recyclable. Secondly, wood resources are renewable; in addition, it is better than cotton in terms of elasticity and shrinkage.

However, this kind of fiber also has some shortcomings, for example, the processing technology is complex. If it is not well dissolved, it will not be able to spin and cause pollution.

At present, the United Kingdom, Japan, Austria and other countries are developing this kind of fiber, and our country is seeking cooperation with these countries.

It is expected that in a few years this fiber will be produced in large quantities.

According to Mei academician, this kind of fiber is a vegetable protein which can be extracted from many plants.

The international practice is to extract lactic acid from corn stalks and waste from making wine and sugar, then saccharification, and then form a spinning solution after polymerization.

But the production of this kind of fiber is not large at present.

According to him, some of the thermal underwear sold on the market now has far infrared technology.

That is to say, a trace element is added to the fiber, so that it can absorb the infrared rays emitted by the human body and the outside, and preserve them, and play a role of keeping warm.

From the outside, it is no different from ordinary clothes. If you turn it over, you will see a thin, very thin film.

Mei academician explained to reporters that this layer of film can withstand cold weather. It is a polytetrafluoroethylene (PTFE) film. There are about 9 billion micropores per square metre. These micropores are 700 times larger than the water molecules. Therefore, water vapor can go out, but the wind can not pass through, so it has the effect of preventing wind and moisture.

It is made into medical protective clothing, and medical personnel wear it without worrying about whether the virus will come in or worry about the sweat.

At present, China, Japan and other countries have this technology, but the price of this kind of clothing is expensive, it is estimated that in a few years will be mass production, then the price will also decline, easy to be accepted by the majority of consumers.

The biodegradability of this fiber is widely used in the medical field.

Chitin can be made into medical suture. After surgery, it does not need suture removal. It absorbs itself and grows with human tissue.

It can also be used as a dressing to treat burned skin, put it on the skin, and it will grow with the skin. If the effect is good, it will leave no scar.

In addition, if a bone is injured, it can replace metal plates, repair bones, and grow together with human bones.

This fiber has been produced in large quantities in China, but it is mainly exported to the Japanese market because of its high price.