Thermal clothing hazards, thermal clothing heating fabric principle

There is no harm, and the so-called "function" of thermal clothing is actually just a gimmick. The concept of "self-heating" claimed by merchants does not conform to the law of conservation of energy. Fiber heating must have energy**, most of the "self-heating underwear" on the market is based on the principle of fiber moisture absorption and heating.

That is to say, when the fiber absorbs water, the hydrophilic group in the fiber molecule binds to the water molecule, and the kinetic energy of the water molecule decreases and is converted into heat energy and released. The moisture absorption and heating performance has a great relationship with the moisture regain rate of the fiber, the moisture absorption and heating performance is good if the moisture regain rate is large, and the moisture absorption and heating performance is poor if the moisture regain rate is small.

For example, wool and modal fibers have good moisture absorption and heating effects, while ordinary acrylic fibers and polyesters have poor moisture absorption and heating effects. Therefore, the principle of this kind of heating underwear is actually to absorb the wearer's own moisture to achieve the function of heating.

It is not suitable for the dry north, and the human body sweats less in winter, and the fiber is difficult to absorb moisture and heat. There are also many people who report that wearing hot underwear is easy to itch, probably because the originally dry ** moisture is absorbed by the underwear.

Fever. Warm clothing is not harmful to the human body.

The raw material of heating underwear is a special fiber material, which is expensive. Generally, thermal underwear is made by pairing a small amount of hot fiber with other fibers. Therefore, even if it is really hot underwear, the temperature will not rise very high, and it can generally be actively heated by 2 to 4.

Relevant experts remind the public to pay attention to anti-counterfeiting when buying thermal underwear. At the same time, it should also be realized that even if it is really hot underwear, the temperature increase is limited and cannot be used to replace cotton clothing.

There is no harm in the correct use of regular manufacturers' products in heating clothing, and the warmth effect will be higher than that of ordinary products.

Warm clothing heats up.

The fabric uses the heating method of far-infrared fibers, which first absorbs heat and then releases heat, so as to achieve heating for the human body. For example, "Serram" is a kind of far-infrared light.

Radiant acrylic fiber, which is a kind of advanced spinning technology to add far-infrared radioactive ceramic particles to acrylic fibers.

in the obtained material.

The principle of warmth preservation is to use the heat released by the wearer itself for storage and conduction to achieve the effect of heat preservation, not that the material itself can generate heat.

The heat-heating fabric for thermal clothing is made of polyester fiber. The fiber section is hollow, and the air layer inside the fiber is used to block the dissipation of body temperature, so that the temperature of the finger bucket of the surface chain will not disappear quickly due to the harsh external climate, so as to achieve the function of heat preservation. The hollow rate of the fiber can reach 30% through experimental testing, which not only retains a large number of empty compass wheel air layer, strengthens the warmth of the fabric, but also makes the cloth surface light due to the relative decrease in the proportion of fiber.

There are many ways to do this, which are usually divided into exercise and drugs. The fastest is the drug method, and the effect of the drug is more obvious, the fastest. However, you should be cautious in choosing ** products, more ** products have added chemical ingredients, and at the same time, many of them lose weight by draining water, and they may be ** after discontinuation.

The most scientific method is a suitable diet and a moderate amount of exercise, which will not affect the absorption of nutrients in the body, and at the same time can take away calories through exercise. If you have time, exercise more, with a suitable diet, proper rest, you can run, frog jump, sit-ups, get up at both ends, etc., but you should do relaxation exercises after exercise, relax your muscles to prevent your muscles from being too hard, massage acupuncture points, take a hot bath, and effectively promote blood circulation, so that you will not feel very tired, and you can relax and relax. The diet should be light, mainly green food, and if necessary, you can take some **tea or some** health products, although there is no drug** base tomato fast but good for the body.

Give yourself a good living environment, make a plan, as long as you persist and have perseverance, it will definitely be as you wish.

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This method is seen in the magazine, the best thing is that this thing does not have diarrhea after drinking, and it is also very beneficial to drink more yogurt, which is written on the morning yogurt with bamboo salt, at noon yogurt with red pond, at night yogurt with skim milk powder, can be used together or choose one of them, I think it is easier to add red pond. Hongtang has a diuretic effect, and the good bacteria in yogurt can promote intestinal digestion and will not have any damage to the body. Three meals can be eaten normally, and some people have successfully lost 24 pounds, but the specific value still depends on personal physique and persistence.

If you have symptoms such as dry mouth, ulceration at the corners of the mouth, sore throat, etc., you should avoid wearing warm clothes with fever. Heat-insulated clothing will cause damage, causing symptoms such as dryness, fever, redness and swelling. At the same time, warm clothes with fever will not be breathable if worn for a long time, which can easily lead to sweating and causing colds.

If you are on fire, it is recommended not to wear heat warmers, because wearing heat warmers not only cannot breathe, but also make the heat inside the human body unable to be released, which is easy to aggravate the symptoms of fire. If you have symptoms such as dry mouth, ulceration at the corners of the mouth, sore throat and scattered cavities, it is on fire, and you need to avoid wearing warm clothes for fever at this time.

Thermal clothing in the process of heating will actually cause damage to the slow flushing shirt, people's response is relatively slow in winter, at this time, it is easy to cause skin discomfort with heating warm clothing, which will cause symptoms such as dryness, fever, redness and swelling, and in severe cases, it will also cause blisters and burns.

Heating warm clothing is to take some relatively tight fabrics, by returning the heat generated by the human body to achieve "warmth", so the heat heating clothing is usually thick and breathable. Wearing a heat warm suit for a long time can damage **, and because the heat warm clothing is not ventilated, it is easy to sweat and cause a cold.

Many people are not too prepared for the answer. I make clothing fabrics, so let me introduce it briefly. This heattech is a means of publicity, and if it is small, it is a new blending technology"tech", to say that it is a gimmick.

I remember that there are four ingredients: viscose, acrylic, polyester, spandex, and vernacular.

Viscose: It is rayon. Similar to cotton, it is softer, softer and more comfortable than cotton. Features: Basically none.

Acrylic: Man-made chemical fibers that imitate wool, many of them are Japanese technology and raw materials, and there are also domestic ones, and some claim experimental symmetry, saying that acrylic has the same thermal conductivity as wool. Function: Warmer than general man-made fibers. This is"heat"

Polyester fiber, also known as polyester, is made of the same staple fibers as viscose. Function: Improve hand feel.

Spandex: It is a yarn that acts as a stretch. The amount of elasticity is what this thread does.

Warmth of this garment: It does not heat up on its own, and there is no clothing that heats up on its own, unless there is a chemical reaction. Winter wears less as cold.

After all, clothes are so thin. Don't listen to other people's nonsense, I have such a similar ingredient and propaganda underwear on me. I think it's better to wear such a piece than to wear a cotton brushed piece of warmth, which is the conclusion of my professional knowledge and trying it on.

It's"heat"It's just that under certain temperature conditions, compared with clothes of the same thickness, such as more than 20 degrees, wearing a single piece may be a little warmer than wearing a single piece of cotton, but under this condition, the warmth has a ball.

There is no way to determine whether there is a fever or not, but it is certain that it is good to wear, I have bought two sets for my picky and thrifty father, and I have never heard him say anything to buy him before.

It's said to be heat, but I don't think it can be understood as heating like an electric blanket that can really heat up on its own, it's just a process to make your own heat not easy to dissipate under the premise of being as thin as possible, so as to keep warm, personal guess, haha. But I think in terms of cost performance, UNIQLO's underwear series is relatively high, let's talk about the feeling I wear, its tights and leggings, there are heating series, I also wear them, ordinary cotton texture also bought to wear, the thickness of the two series is actually about the same, but the fabric is different, the heating series feels warmer than ordinary cotton, the same, and more breathable, but compared to the cold in winter, the breathability can be ignored, because it did not cause me to wear a bad experience. Of course, you have to compare it with the thicker pile thermal clothing, after all, thicker will definitely be warmer, just to say that at the same thickness, its heating series is warmer without being bloated.

I think it's still worth buying. Comfortable, warm, light and moderate.

Is the so-called hot underwear reliable? The reporter specially bought two types of thermal underwear, and the gray thermal underwear was bought by the reporter in a regular shopping mall, which was more expensive. And the black heating underwear is bought in the roadside market, which is much cheaper.

At Xi'an Polytechnic University, Shaanxi Provincial Key Laboratory of Functional Garment Fabrics, Professor Meng wanted to take reporters to do an experiment. "The experiment we need to do today is to simulate the evaporation of water vapor in the human body to see how the heating effect of these two heating underwear is. ”

In order to simulate the temperature and humidity of a person wearing underwear, Professor Meng added hot water of about 36 degrees to the steam humidifier and continuously humidified the two types of heating underwear. At the same ambient temperature, Professor Meng used two thermometers to measure the temperature in the laboratory at that time to 21 degrees Celsius, and inserted the two thermometers into two samples of fever-generating underwear. After the steam engine has been in operation for about 15 minutes, turn off the steam engine and observe the degrees of both thermometers.

Through the experiment, it can be seen that the gray heating underwear, its temperature has increased by 3 degrees Celsius from 21 degrees to 24 degrees, and the black heating underwear is still about 21 degrees, basically unchanged.

Professor Meng said that the reason why the temperature of gray heat-heating underwear can increase by 3 degrees may be because it contains heat-generating fibers, which is the fundamental reason why underwear can self-heat. The heating fiber can adsorb the vapor into liquid water, and the liquid water converts the heat of vaporization into heat energy and releases it, so its temperature rises.

Through the small experiment just now, gray thermal underwear can indeed self-heat, so what is the effect of this kind of thermal underwear compared with our traditional thermal underwear?

Professor Meng said that although underwear containing heat-generating fibres can self-heat, it can only raise temperatures between 2 and 4 degrees Celsius. In order to compare the warmth effect of traditional thermal underwear, Professor Meng used the same method to measure the thermal underwear with cotton lint, and it was seen from the degree of the thermometer that after about 15 minutes of waiting, the degree of the thermometer only increased by about 1 degree.

According to Professor Meng, thermal underwear is a patented technology in the industry, but there are more thermal underwear on the market, and many of them do not use heating materials such as heating fibers, and basically do not have heating function. Everyone should choose a big brand and have a test report, so that they can effectively buy real heating products. However, thermal underwear, it does not have this (heating) function, it mainly prevents the loss of human body temperature and heat, and mainly relies on thickness to improve this warmth.

No. Warm baby is the heat produced by chemical reactions, mainly iron combined with molecules in the air. However, although the hot underwear also uses chemical reactions, it is not actually a pure chemical product, but also a combination of the temperature conduction effect of the fabric and the body, so it belongs to the category of science and technology products.

The difference between heating underwear and ordinary underwear is not too big, and the heating function is actually some additives inside, because the fabric itself must be a general textile fiber fabric, the fiber is very fine, and it is easy to break if too many functional materials are added, so the amount added is very small. Because the amount added is small, the effect will not be particularly noticeable. ”

In fact, the principle of their heating is not the same, to a certain extent, the warm baby has some chemical components combined with the air, it will form such a heat, underwear may be it by its own residual heat, drive it to heat up.

In fact, I think this so-called fever warm clothing is a gimmick, with its own psychological factors, in fact, it is not very useful.

It's not reliable, don't rely on warm clothes or anything, wearing more clothes is the right way.

The new heating underwear is based on the same principle, which can heat up on its own, so that we will be very warm in winter.

To be honest, thermal clothing is unreliable.