| Development of Impact-resistant Rubber Dam |
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| DOI： |
| Key Words: rubber dam；steel cord net；nylon 66 canvas；CSM；spoiler |
| Author Name | Affiliation | | ZHOU Yingzhi | Linqu Middle School | | ZHOU Yi | Shandong Yokohama Rubber Industry Products Co.，Ltd |
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| Abstract: |
| Structure design，formula design，production process and product performance of impact-resistant rubber dam were introduced. The upper and lower layers of the skeleton material were steel cord nets，and the two middle layers were nylon 66 canvas. Chlorosulfonated polyethylene（CSM）was used as the main rubber material in the outer layer，and petroleum resin was added to improve the impact resistance. Plug and dam were seamlessly overlapped and vulcanized. A spoiler was designed on the downstream side of the dam bag to reduce the dam shock and vibration. CSM protective coating layers were applied on both sides with the same color which extended the service life of the rubber dam. The designed height of the product was 6 m and the designed service life was 30 years. |
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