Polymeric additives for enhancement of ballistic performance in fibrous structures
View Patent ↗A fibrous structure made from a fiber and about 1 to about 15 wt % of a high viscosity polymer that has a glass transition temperature of about minus 40 to about 0° C. and useful for making bullet resistant articles.
1. A fibrous structure, comprising a polyaramid fiber that has a tenacity of about 900 MPa and about 1 to about 15 wt % of polyvinyl propionate polymer.
2. The fibrous structure according to claim 1 , in the form selected from the group consisting of knitted fabric, a woven fabric, a uniweave structure, a uni-directional sheet, a multi-directional sheet, a non-woven layer, and a single fiber.
3. An article, comprising one or more layers of the fibrous structure of claim 2 .
4. The article of claim 3 , wherein the fiber comprises poly (paraphenylene terephthalamide).
5. The article of claim 3 , wherein the article is body armor.
6. The article of claim 3 , wherein the article is body armor comprising a combination of treated and untreated layers.