| As the rapid development of the social economy and the rapid development of the science and technology, the conscious of self-protection of the human being becomes stronger and stronger. We ask a higher performance of textile for security and protection. The protective fabric is asked for more and more end uses. Recent years, China has paid big attentions to the research and development of protective textiles.Aramid fibers are the most used in high performance personal protective fabric today. There is a big difference between the mechanical properties of Para-aramid and Meta-aramid. According to the characteristic of these 2 fibers, divers protective fabrics which fulfill different mechanical exigencies can be developed.This paper installs and proofs experimentally the relation between the blend ratio and the mechanical properties of the blended yarn. The expressions of the breaking strength and of the breaking elongation of the blend yarn have been developed.This paper analyzes the relation between the structural parameters and the mechanical performance of the plain fabric; and develops the expression of the elongation of plain fabric. Further simplified analyzing shows that the breaking elongation of the plain fabric becomes smaller if the yarn count becomes finer when the fabric weight is fixed.This paper developed a new Anti-G suit fabric for Chinese Army by applying the 2 conclusions above. This new Anti-G suit fabric is used in the new generation pilot equipments by the Chinese Army, firstly put in service for the first women pilots of Chinese Army and reviewed during the 60th Chinese National day.At last, this paper discusses a new 3-layer structure for firefight fighting suit, and compares this new developed structure with the previous and current structures. The result shows that this new 3-layer structure is more comfortable. It can also bring a suitable thermal protection to the firefighter. This performance can reduce the thermal-pressure of the firefighter, increase their reactivity and avoids the accidents caused by over-thermal-protection. This new 3-layer structure is worth further studies for finally putting it in application. |
