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Quality range
质量范围 |
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| Silicones 硅硐胶： |
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* 市场上产品质量差异很大
Big quality fluctuation of products on the market
* 多达50+%的填加剂（可燃）50+ % extended (flammable)
* 由于填加剂的蒸发而硬化并收缩
Harden over time and shrink because of evaporation of extender
* 太多的配方及品牌以低质充斥市场
Lot’s of formutors / lalabels with low quality standard
* 虽外表看来无异，有些过期的硐肟性产品不能正常固化
Shelf life problems with Alkoxy systems(some expired products may appear suitable but may not
cure correctly
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| Polyurethane 聚氨酯胶： |
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* 仅有极少的生产商因此质量得以保证
Few manufacture only therefore better defined quality
* 由于不可能有特殊的填加剂因此无配方欺诈
No formulation tricks possible with special extenders |
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Adhesion on porous substrates
与多孔基面的粘结 |
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| Silicones 硅硐胶： |
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* 无特殊底油时很难或不粘结
Little to no adhesion without special primer
* 酸性硅胶无法用于混凝土（碱性基面）
Acetoxy systems cannot be used on concrete (alkaline substrates) |
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| Polyurethane 聚氨酯胶： |
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* 优良的粘结性能，尤其在多孔基面上使用时
Excellent adhesion especially on porous substrates
* 即使在碱性基面上使用时都不会有任何问题产生
No problem even on alkaline substrates |
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Staining problems
污染问题 |
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| Silicones 硅硐胶： |
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* 融入石材的风险 Risk of migration on natural stone
* 低分子硅硐粒子会污染表面（硅硐部分）
Staining of surface with low molecular Silicone particles (Silicone part)
* 只有特殊配方的“石材硅硐” 能被用在天然石材上，虽然石材表面因低分子硅硐粒子也会受污染
Only special formulation “Stone-Silicone” can be used for natural stone, although later
staining of surrounding surfaces may still occur from low molecular silicon particles
transferred with dirt & dust
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| Polyurethane 聚氨酯胶： |
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* 对标准的聚氨酯胶使用时无融入的问题产生
No migration problems with standards Polyurethane
* 无污染性 No staining |
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