Heat resistance : Silk fiber has a low degree of thermal denaturation and thus relatively high resi stance to heat .Only 5-8% of silk becomes brittle when heated to 100C . Silk burns at a temperature 300-400 " C , so it al so good for fire prevention. Temperature regulation : Silk not only excels at heatradiating , due to its multi-porous fiber structure , it's also good at heat preservation. keeping : The protein fiber of silk is teeming with hydrophilic groups such as Amino ( -nh2 ) and Amine ( -chnh ). Composition :siIk belongs to natural protein fiber and has over 97% of protein . It 's excellent for health care. Brief introduction of SILK :.