Analysis of thermal protection and thermal insulation performance - development direction

Thermal protective clothing is widely used in the rescue and disaster relief industry. At present, the research of thermal protective clothing is also an important technical direction of the textile technology industry. It is summarized here that research on thermal protective clothing needs to move in these directions.

1. Heat resistance of thermal protective clothing.

Rising to 600 degrees in minutes. Even in a room directly on fire, where the temperature is around 300 degrees, the heat of plastic can melt enough to kill. Thermal protective clothing is mainly used for high temperature operations and must maintain its physical properties without shrinking, melting, brittle carbonization.

2. Thermal insulation properties.

In the actual use of thermal clothing, most users do not directly touch the flame, but transfer external heat to the human body in the form of thermal convection, thermal radiation and thermal conduction, causing harm to the human body. Thermal protective clothing must have good performance of slowing down and preventing heat transfer, avoiding heat source damage to the human body, and providing good safety protection for thermal protective clothing users who work in high temperature environments.

The thermal insulation of thermal protective clothing is not only related to the thermal conductivity of thermal protective clothing fiber raw materials, but also to the design and fabric of the clothing. The material and the structure of the lining have a lot to do with it.

3. Practicality and wearing comfort.

In addition to heat resistance, thermal protective clothing must also have good practical performance and comfort, such as tensile, tear, and wear resistance. The dyeing is firm and washable, and it should also have a certain heat and moisture transfer ability, which is conducive to the loss of human heat and sweat evaporation, and the physiological load is low.

4. Flame retardant properties.

Flame retardancy means that the fabric is incombustible or non-combustible when it encounters a special high temperature or flame; when the fabric catches fire, it can inhibit the spread of combustion. Once the fire source is evacuated, it can be extinguished immediately. In fires, the most severe burns often occur where people's clothes are on fire, so the flame retardant properties of thermal protective clothing are very important.

In the process of using thermal protective clothing, it is generally the fabric that will usually meet the flame, such as fire fighting clothing. In the process of firefighters entering and leaving the fire site, the outer side of the fire suit is largely in direct contact with the flame, while the inner side is rarely in contact with the flame, which requires the thermal protection fabric to resist the performance of the flame from one side to the other, so it also The permeability of the fabric to flame needs to be considered.

5. In addition, the thermal insulation clothing is also light in weight, easy to wear, loose in structure, unlimited in running, crawling, jumping and other movements, and is not easy to cause hooking. Take strengthening measures to meet the requirements of coordination and comfort and improve work efficiency.