|
Paintability
可涂性 |
|
| Silicones 硅硐膠： |
|
* 一般來說不能涂漆 Not paintable in general
* 填硅硐膠的接縫兩側(cè)涂漆也能影響膠的粘接性
Risk of adhesion problem of paint next to Silicone joint
* 修補(bǔ)難 Critical in repair / maintenance situations |
|
|
| Polyurethane 聚氨酯膠： |
|
* check compatibility 可以在上面涂漆 Paintability o.k. in general
* 易修補(bǔ) Easy also in maintenance situations |
|
|
|
Difficult to repair
難于修補(bǔ) |
|
|
| Silicones 硅硐膠： |
|
* 硅硐膠與硅硐膠之間很難粘接
Adhesion Silicone to Silicone difficult
* 難于清潔/如果基面用過硅硐膠，在第二次使用時(shí)，應(yīng)將基面徹底清潔干凈才能達(dá)到良好粘結(jié)效果
Very difficult to clean / prepare a substrate properly to get a good adhesion when Silicone has been used before |
|
|
| Polyurethane 聚氨酯膠： |
|
* 易修補(bǔ)，因?yàn)樾屡f聚氨酯膠之間有非常好的粘結(jié)性
Easy to repair because excellent adhesion of fresh on cured Polyurethane
* 只要有個(gè)Ｖ形切口就足夠了，無需將舊的聚氨酯膠完全清除
V cut is sufficient no full removal of old Polyurethane necessary |
|
|
|
Shelf life
保質(zhì)期 |
|
|
| Silicones 硅硐膠： |
|
* 在酸性系統(tǒng)中有良好作用 Very good for acetoxy systems
* 容易施用，無需完全固化
Critical for alkoxy products easy to apply by no more (full) curing
* 早期移動裂縫的風(fēng)險(xiǎn)risk of early movement cracks
* 施用者不易意識到保質(zhì)期限
shelf life limit cannot be realized by applicatior |
|
|
| Polyurethane 聚氨酯膠： |
|
* 在正常包裝及儲存下的保質(zhì)性能好
Shelf life in general good in proper packaging and storage
* 過期后產(chǎn)品會增加厚度，接近保質(zhì)期時(shí)產(chǎn)品的擠出性能差
Products get thicker over time, more difficult to extrude near shelf life limit
* 只要產(chǎn)品能擠出，它會正常固化
As long as product can be applied it will cure properly |
|
|
