High resistance to various chemicals
High alkali resistance in particular
KURALON is hardly affected by alkali due to the presence of the OH radical in its molecular chains. KURALON retains good performance when used in alkaline environments such as reinforcing cement.
Chemicals | Test condition | Strength retention | ||||||
---|---|---|---|---|---|---|---|---|
Concentration (%) |
Temperature (℃) |
Time (hour) |
KURALON (%) |
Polyester (%) |
Polyamide (%) |
Rayon (%) |
||
Alkalis | Sodium hydroxide | 1 | 100 | 100 | 100 | 29 | 75 | 71 |
40 | 20 | 10 | 100 | 97 | 82 | 0 | ||
Acids | Hydrochloric acid | 10 | 20 | 1 | 100 | 100 | 76 | 83 |
10 | 20 | 10 | 100 | 95 | 77 | 69 | ||
Salts | Sodium chloride | 3 | 100 | 10 | 100 | 100 | 84 | 98 |
Organic solvents | Acetone | 100 | 20 | 1000 | 89 | 100 | 88 | 100 |
Oils | Mineral oil | 100 | 100 | 10 | 100 | 100 | 100 | 10 |
※Soak under fixed load (Kuraray data)
※In cement water at 80℃ with load (Kuraray data)