In daily life, I don't know if you have used memory cotton mattress, memory cotton pillow, cushion and other products, about memory cotton, do you know what material is? Memory cotton, that is, slow rebound, has special viscoelastic characteristics, according to its characteristics to develop a memory cotton mattress and other products, in our lives a lot of use, I believe that many people for the concept of memory cotton is still very vague, the following small series to give you a detailed introduction to all aspects of the memory cotton, we will understand.
Memory cotton basic introduction
Slow rebound, also known as memory sponge, is a polyurethane polymer with an open unit structure. The material has special viscoelastic properties, reflects very soft material properties, and has a strong impact energy absorption capacity. This material molecule is very sensitive to temperature, so it is also called warm memory sponge.
Characteristic function
The excellent performance of memory wool materials in their various application fields is due to the special viscoelastic properties of their materials, that is, when the material is subjected to pressure impact, both the elastic deformation (energy storage deformation) that meets Hooke's law and the plastic deformation that cannot be recovered (energy dissipation deformation) occur at the same time, that is to say, the deformation of memory wool is an organic combination of these two kinds of deformation. The plastic deformation will consume most of the impact energy (under the special formula, it can absorb more than 90%), and the part of the energy stored in the elastic deformation can slowly return the memory sponge material to the shape before the pressure after the external force is removed (The reason why the slow recovery is required, because the part of the energy stored in the elastic deformation needs to pull the displaced part of the molecule back to the original position).
This property allows the memory wool material to behave:
When used as a shock buffer material, it has a strong impact energy absorption capacity, and at the same time, it reflects a small rebound force on the pressure object (or the human body) in contact with it, and this rebound force of the buffer material is the direct cause of damage to the protected object or the human body in the case of high impact. When used as a cushion product material, the pressure is similar to the static pressure, and under the action of such pressure, the molecular structure of the memory sponge material will undergo a "flow" shift, deformation to fit the pressure surface profile, and spread the support point to the entire contact surface, so that the pressure can be dispersed throughout the contact surface. This feature is known as the "uniform pressure dispersion characteristic" of memory sponge. When people sit and lie on the mat made of memory cotton material, because the pressure is dispersed, there is no pressure concentration point in the body, and the comfort is greatly improved, and the problems such as bedsores caused by the blockage of blood circulation caused by long-term pressure oppression are also achieved. Specially modified, the material also has a soft touch even better than ordinary sponges; At the same time, the Open-cell molecular structure of the material is similar to the cell structure of the human body and has good compatibility with the human body, which makes the memory sponge material widely used in the field of medical rescue.
These characteristics are destined that this material will play an increasingly important role in people's lives, and today's facts clearly prove that this is also the case.
Material characteristics
1. Temperature sensing characteristics. It refers to sensing the temperature of the human body, gradually becoming soft, and absorbing the pressure of the human body to adjust the human body to the most comfortable posture. For the part below that is not in contact with human temperature, it still maintains sufficient support;
2. Viscoelastic properties. Refers to the product under pressure and sag, but does not show a strong rebound (such as clay under pressure); When the pressure is removed, the product will gradually return to its original shape (such as spring recovery);
"Slow rebound" is called a "zero pressure sponge", which means that when lying on it, it feels like floating on water/cloud, and the skin is not pressurized; In fact, the slow rebound material can adjust the pressure of the irregular shape to the most balanced state, that is, it can slowly deform to adapt to the oppression of the object, and provide the most uniform support. The blood circulation pressure of the human skin is 36mmHg, and the high-grade memory cotton material (to achieve 10-15 seconds slow rebound time) can evenly distribute the pressure at each point, and the pressure can be generally reduced to below 36mmHg, making people feel that the blood is smooth, as if there is no place to press, which is not to say that there is no pressure on the memory sponge.
Material foreground
Slow rebound material is a comfortable revolution, is the perfect combination of softness and durability, the perfect combination of durability, the test after 80,000 times of compression testing, the wear rate of the material is less than 5%, while the wear rate of other high rebound materials of ordinary polyurethane cotton is about 10-15%.
Slow rebound is one of the most sensational and life-changing inventions in the world, and there are too many research and application examples to show that it is far more than other materials in the protection of human health, skin affinity, comfort and other performance, and become the first choice for the replacement of software in the future. It does not rely on the concept, gimmicks to seek customer love, its rise is entirely with excellent performance and rapid effect of the use of feelings, and the development of pillows, mattresses, cushions, sofas and other slow rebound products, in the vast sea of other similar products stand out, seize the first crown! It gives many users a good feeling at the same time, bring a lot of beneficial health help, become one of the main pursuits of people's future life.
Product raw material
In the production process of memory sponge, several raw materials must be used in the United States and Japanese companies to produce high-quality products with excellent body feel. However, the price of imported raw materials is high, the required MOQ is large, and the general small factory is difficult to bear, often using alternative raw materials, or ultra-soft sponge formula to pretend to be memory sponge.
Density has a great impact on the performance of memory wool, and is proportional to the production cost of the product, the heavier the more expensive, the general performance is good. As a memory sponge used by the human body, in order to have sufficient supporting force, at least 80D or more. If it reaches 120D, it is a top slow rebound product.
Production process, product density, accessories selection, etc., also lead to different manufacturers of slow rebound product quality gap is very large. In this regard, it is only recommended that consumers choose brands with corresponding test reports.
Matters needing attention
Pillow core can not be washed;
Velvet pillowcase can be used directly, can be disassembled and washed;
Polyurethane is temperature sensitive material, the product changes with the season, there will be a certain degree of soft and hard change, is a normal phenomenon;
Since most of us are used to the traditional pillow and height, the use of this product, the first two days may be unaccustomed to the place, usually 3-5 days after use will gradually get used to, and in the morning and during the day obviously feel the cervical spine relaxed.
Through the above introduction of the characteristics and functions of memory cotton, material characteristics, material prospects and so on, I believe that everyone has a deeper understanding of memory cotton. In life, the use of memory cotton is a lot, such as pillows, mattresses, cushions, sofas and many other slow-rebound products, not only bring us comfortable feelings, but also give us help on health, it is worthy of being a good material. In addition, we should pay attention to the purchase of memory cotton related products, pay attention to the brand at the same time pay attention to quality and safety, to avoid buying fake and inferior products.