What Is Kevlar? Why Are Kevlar Vests Bulletproof? - Science ABC

Kevlar is a type of plastic with a very high tensile strength. The molecules are aligned parallel to each other and are very tightly bound, making the material bulletproof. Kevlar is used in the making of bulletproof vests, helmets and other lightweight military equipment. Riding shoes, firefighting apparel, body armor and body pads also rely on Kevlar’s unique qualities.

Kevlar is a type of plastic with a very high tensile strength. The molecules are aligned parallel to each other and are very tightly bound, making the material bulletproof.

Stone Age man used wood, leaves, stone, tree sap and metal (eventually) for their survival. We use mattresses made of straw, cotton, foam or rubber and sometimes metal springs. Bed frames are typically made of wood or metal. Pillows are composed of feathers, bedsheets and pillow covers are cotton or linen, and thick blankets contain layers of cloth and even electrical components for heating purposes. And that’s all for one night’s sleep!

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Not only do we still use many natural materials, but we also use a wide range of synthetic (man-made) materials. Plastics are perhaps the most prominent of these synthetic materials and have a very wide range of applications. They are used to make polythene bags, plastic chairs, Tupperware, bottles and drinking straws (among thousands of other items), while extremely strong plastics like Kevlar are used to make aircraft parts and bulletproof materials!

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