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DOWSIL™ 888 Silicone Joint Sealant

有效密封普通水泥混凝土 (PCC) 中的横向收缩和膨胀接头、纵向、中心线和肩接头。

用途:

  • New construction, repair or remedial applications

优势:

  • Can be extruded from -20 to 120°F.
  • May be used in joints that are not uniform in width.
  • Movement capability 100% extension and 50% compression.
  • Low modulus.
  • Weather and UV resistant.
  • Fuel resistant-short term exposure. Refer to Dow form number 62-207 for more information.
  • One component, cold applied, ready-to-use as supplied; dispensed directly from the bulk container into the joint by hand or with an air-powered pump.
  • Unprimed adhesion – primer is not required for bonding to Portland cement concrete. For optimum adhesion, the surface must be clean, dry and frost-free.
  • Cure time – typically, the sealant will have a skin-over time of one hour or less at standard conditions.

性能

这些数值为典型性能,并且不用于在规格制定过程中使用。

典型性能

  • 位移 中等
  • 使用位置 工作地点
  • 保质期 360 Days
  • 化学 中性
  • 固化体系 单组分固化
  • 基材 多孔
  • 外观 不透明
  • 完全粘合时间 14 to 21 Days
  • 室温固化-天数 7 to 14 Days
  • 应用温度范围 -29 to 49 °C
  • 延伸率 > 1000 %
  • 抵御种类 喷气燃料阻力, 抗油污, 抗紫外线, 热阻, 耐臭氧, 防水
  • 无底涂剂的粘合力 无需底涂
  • 模量@150%延伸率,最大 28 psi
  • 比重 @ 25C 1.48
  • 流平 无流挂
  • 相对湿度50%时的表干时间 60 Minutes
  • 硬度-Shore A 15 Shore A
  • 组分 单组份
  • 防水 true
  • 颜色 灰色

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DOWSIL™ 888 Silicone Joint Sealant
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