Study On Anion Polypropylene Melt-blown Nonwoven Materials

Anions are good for our health. They can clean the air and have antibacterial effects. This subject is aimed to develop a new and good-performance anion polypropylene nonwoven materials by melt-blown. To distinguish the difference in air quality, the concentration of air anion for different environmental, time and seasons was studied. The measuring method of the anion occurrence for textiles was advanced, too. Several properties of anion polypropylene nonwoven materials were tested, such as anion generation capacity, adsorption performance, antibacterial property, thermal comfort and thermal stability.Air quality is bad when the concentration of air anion is below 250 ions·cm-3. It makes people feel uncomfortable. It is tired and dizzy to stay indoor for long time. Air quality is good when the concentration of air anion ranges from 250 to 400 ions·cm-3, but it is unfitness, either. Windows should be opened once there are too many people in the room. Air quality is better when the concentration of air anion ranges from 400 to 1000 ions·cm-3. In these places, there are enough anions for us. It makes us feel relax and refreshing. This is true when we stay somewhere out of the door, the air is clean and bright. Such as in the forest, on the top of the mountain, and so on. Air quality is the best when the concentration of air anion is over 1000 ions·cm-3. It has curative effect for our body.Use COM3200PROⅡ air anion counter to test anion-generating capacity of static anion textiles in sealed test bin and discuss the influence of starting time, distance of test, display mode and relative surface area, and put forward a set of measuring system. The set of measuring system is that in the condition of constant temperature and humidity, placing the sample into the sealed test bin horizontally, reposing for more than 900 s, while the distance of test is 5 cm, the height of test is 1 cm, and relative surface area is more than 1×10-3. In addition, ventilate the bin between each test.Use melt-blown process to prepare 4 specifications of anion polypropylene nonwoven materials. The quality percentage of nano titanium is 4 %. Fiber diameter in the anion polypropylene nonwoven fibrous webs ranges from 0.1 to 20μm. While the incorporated anion-given nano titanium gold powder can come out of the granular material and make particles on the surface of the fiber. Anion-generating capacity of the sample is over 400 ions·cm-3. The ammonia adsorption rate is 13.5 ppm·min-1 and adsorption efficiency is 86 %. The antibacterial effect is good. It can build an environment similar to the top of mountain.