Original document(5 pages) Authorized document(5 pages) 中文版
    A material for shielding incident sound waves contains PVC (5-60 wt%), tungsten powder (10-90), and assistant (5-30). Its advantages are better mechanical and sound shielding performance, high resistance to fire and chemical corrosion, high machinability, and no poison. Its sound shielding index can reach 22.7 db.
Application Number
申请号		 02157784 Application Date
申请日		 2002.12.26
Title 名称 Shielded incident acoustic wave material
Publication Number
公开号		 1424352 Publication Date
公开日		 2003.06.18
Approval Pub. Date Granted Pub. Date 2004.12.22
International Classification 分类号 C08L27/06
Applicant(s) Name
申请人		 Shanghai Communications Univ.
Address 地址 200030
Inventor(s) Name 发明人 Cai Weimin, Cai Jun
Attorney & Agent 代理人 wang tilin

  
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