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SILASTIC™ 8257 Silicone Foam

Silicone Rubber(硅橡胶)

陶氏化学(Dow Chemical)

产品描述

SILASTIC 8257 Silicone Foam is a  low hardness product, primarily  developed as a dispensed ‘foamed-inplace’ gasket material for the  automotive and industrial assembly &  maintenance industries. When the A and B liquid components are  thoroughly mixed in a 1:1 ratio by  volume, the product will expand and  cure to a foamed elastomer in  approximately 10 minutes at room  temperature. This foam has a fine cell  structure and works as a seal or gasket  where long service life, chemical  resistance, good weatherability and  low compression set are required. The  hardness makes the product suitable  for applications with low clamping  pressure. Furthermore, the inherent  properties of a silicone elastomer  mean that the product can be used  over a broad temperature range. The  material expands without employing  ozone depleting CFCs or other related  blowing agents.


FEATURES & BENEFITS

•Low hardness (Shore 00) • User-friendly, easy to handle 1:1  mix ratio • Fast ambient temperature cure, no  need for temporary storage of  equipped parts • Does not contain chlorofluorocarbons (CFCs) • Low compression set (post-cured)  which is retained at high service  temperatures • Stable and flexible over a wide  temperature range


APPLICATIONS 

• SILASTIC™ 8257 Silicone Foam is designed to be dispensed and cured  directly on parts to form an integrated compression gasket • Typical applications include automotive parts, housings for electric devices,  exterior lighting, domestic appliance components and tile-printing-rollers.

基本信息
原厂资料
物性表(英文)
产品特性
良好粘合性
可发泡
技术参数
物理性能 值/单位 测试标准 测试条件

密度

1 g/cm³ Internal

密度

1.06 g/cm³ Internal

密度

0.11~0.16 g/cm³ Internal
cured

粘度

10.5~14.5 Pa-s Internal

粘度

19.5~28 Pa-s Internal
机械性能 值/单位 测试标准 测试条件

压缩永久形变

73 % Internal
50% compression, 22 hours at 70°C non-post-cured

压缩永久形变

9 % Internal
50% compression, 22 hours at 70°C post-cured
硬度性能 值/单位 测试标准 测试条件

邵氏硬度 OO

25 OO Internal
cured

此物性表中的信息由阿技材料库从该材料的生产商处获得。阿技材料库尽最大努力确保此数据的准确性。 但是阿技材料库对这些数据值不承担任何责任,并强烈建议在最终选择材料前,就数据值与材料供应商进行验证。