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  2. DOWSIL™ 758 Silicone Weather Barrier Sealant

DOWSIL™ 758 Silicone Weather Barrier Sealant

单组分、中性固化的硅酮密封胶，用于粘合板状或即剥即贴的耐候屏障中通用的低表面能表面。可与低密度聚乙烯 (LDPE)、阳极电镀铝、乙烯基、粉末涂层铝、Kynar® 涂层铝无底涂粘合。

用途:

Strong adhesion strength to:

  • Self-adhered window flashing and wraps
  • Nonwoven spunbound window flashing and wraps
  • Polyethylene wraps
  • Polyethylene surfaces
  • Polypropylene surfaces
  • Common polyolefins
  • PVC
  • Steel, aluminum and metals
  • Fluorinated surfaces

优势:

  • High adhesion strength
  • Long-term silicone durability
  • Low-VOC formulation
  • Single-component, primerless application
  • ±25% movement capability
  • Passes 5,000 hr QUV test

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

  • 下垂度(垂流) 是 否 0.06 mm
  • 位移 是 否 中等
  • 位移能力 是 否 -25 to 25 %
  • 使用位置 是 否 工作地点
  • 化学 是 否 中性
  • 可操作时间 是 否 15 Minutes
  • 固化体系 是 否 单组分固化
  • 固化类型 是 否 自然固化
  • 基材 是 否 非多孔
  • 外观 是 否 不透明
  • 延伸率 是 否 800 %
  • 抵御种类 是 否 抗紫外线
  • 拉伸强度 是 否 200 psi
  • 挥发性有机物 是 否 25 g/liter
  • 无底涂剂的粘合力 是 否 无需底涂
  • 特殊功能 是 否 与特种塑料之间的粘合力
  • 硬度-Shore A 是 否 30 Shore A
  • 组分 是 否 单组份
  • 颜色 是 否 白色
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