公开(公告)号：US20190106553A1

公开(公告)日：2019-04-11

申请号：US15819273

申请日：2017-11-21

申请人： KING KHALID UNIVERSITY (KKU)

发明人： Abdullah G. AL-SEHEMI ,  Ahmed A. AL-Ghamdi ,  Nikolay Todorov Dishovsky ,  Nikolay Todorov Atanasov ,  Gabriela Lychezarova Atanasova

IPC分类号： C08L7/00 ,  B32B25/04 ,  B32B25/12

摘要： The subject matter of the present patent application constitutes an elastomer composition intended for embedding a compact antenna designed to be used and operated in close proximity with regard to the human body to build short-range wireless communication links.The elastomer composition for embedding a compact antenna is based on natural rubber and components whose quantities are expressed in parts in wt per 100 parts by weight of natural rubber (phr), namely: sulfur—1 to 2 phr; phenyl-trichloromethylsulfenyl-benzene sulfonamide—0.1 to 0.5 phr; diphenylguanidine—from 0.3 to 0.8 phr; tertiary butyl-benzothiazolyl-sulfenamide—from 1 to 2 phr; dimethylbutyl-phenyl-p-phenylenediamine—1.5 phr; polymerized trimethyl dihydroquinoline—1.5 phr; stearic acid—2.0 phr; zinc oxide—3.0 phr; rapeseed oil—15 to 30 phr; bis (triethoxysilylpropyl) tetrasulfide-silane—from 0.1 to 4.0 phr; 3-thiocyanato-propyl-triethoxy silane—from 2.0 to 6.0 phr; carbon black—5.0 phr; optionally silicon dioxide—from 10 to 50.0 phr, microcrystalline cellulose—from 20.0 to 60.0 phr. The composition of the invention is multilayer.The advantages that the composition intended for embedding a compact antenna provides are: high efficiency when the antenna is placed over or in close vicinity to a human body model or metal surface pattern, a low specific absorption rate SAR (intensity of absorbed radiation) with regard to a human body model when the antenna is placed over or in close proximity to a human body model.