This dress is made of polyethylene plastic with air conditioning effect

Although the summer has passed, the autumn tigers are fierce. The day is still hot. The friends in the factory have to endure the double torture of "machine baking" and "fire baking". At this time, if you have a piece of clothes that can cool down by evaporation of sweat, you will work harder!

Material source

Generally speaking, this material is similar to the polyethylene plastic used in our daily kitchen. This material can allow infrared radiation to pass through, but it is impermeable, transparent, and cannot be used to make clothes at all. However, Stanford University researchers have made up for the shortcomings of this polyethylene material by comprehensively using nanotechnology, photonics and chemical technology.

Raw material transformation

They found a polyethylene material commonly used in battery manufacturing, which has a special nano structure and is opaque under visible light, but cannot block infrared radiation. The researchers then used a harmless chemical to make it water permeable, allowing water vapor molecules to pass through the material's nanopores. In this way, the improved new material has three basic conditions as a clothing fabric: opaque under visible light, permeable and breathable, and allows heat radiation to pass through.

In order to make this lightweight material more like clothing fabric, researchers designed a three-layer fabric structure with certain strength and thickness: two layers of polyethylene, separated by cotton mesh.

Heat dissipation mechanism

Researchers pointed out that all objects, including human body, dissipate heat in the form of infrared radiation, and clothing will limit the emission of body heat, making the skin feel warmer.

This new fabric uses different cooling mechanisms: it can promote the body heat dissipation by reducing the infrared radiation barrier, instead of using external energy, it can achieve the goal by changing the infrared radiation penetration of the material.

Compared with cotton cloth of the same thickness, the new fabric has better heat dissipation performance: clothes made of the new fabric will have a body temperature two degrees lower than those made of cotton cloth.

Little knowledge

Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (lower service temperature can reach - 100~- 70 ° C), good chemical stability, and can withstand the corrosion of most acids and alkalis (not resistant to acids with oxidizing properties). It is insoluble in general solvents at room temperature, with small water absorption and excellent electrical insulation.

Researchers at Stanford University in the United States have developed a new type of fabric, which has better heat dissipation than all the current natural or synthetic fabrics. They wrote in Science magazine that wearing clothes made of such fabrics in summer would feel cool and comfortable even in an environment without air conditioning.

Looking forward to next summer, we can wear air conditioners and endure the scorching sun.