1. Chemical Resistance
Lumirror™ is highly resistant to acids, taking little damage from weak acids at boiling points and strong acids near room temperature.
It features normal alkali resistance, withstanding weak alkalis but degrading when exposed to strong alkalis. However, care must be taken as ammonolysis caused by ammonia can lead to degradation.
Additionally, it is generally quite resistant to organic solvents and oils, with nonpolar substances in particular having almost no effect on Lumirror™.
Tables 1 and 2 show Lumirror™'s strength retention rate with various chemicals. To test this, Lumirror™ samples were immersed in various chemicals at room temperature for 5, 10, and 20 days, or at 100°C for 1, 3, and 5 hours (or the boiling point for liquids with a boiling point of 100°C or less). After, the changes in tensile strength were measured for each chemical, and compared to the strength the untreated material, which is shown as 100%. The thickness of each sample used for measurement was #25 (25 μ).
Table 3 shows the organic solvents and oils that have a particular effect on Lumirror™.
Note that the withstand voltage of Lumirror™ immersed in benzene, alcohol, freon, carbon tetrachloride, etc., is the same as that before being immersed.
Table 1. Lumirror™ Chemical Resistance (30°C, 5/10/20 Days)Unit: %
|Glacial acetic acid||91||90||91||Excellent|
|35% (concentrated) hydrochloric acid||97||85||84||Good|
|18% hydrochloric acid||100||94||92||Excellent|
|60% (concentrated) nitric acid||0||0||0||NG|
|35% nitric acid||100||92||87||Good|
|80% sulfuric acid||0||0||0||NG|
|70% sulfuric acid||100||100||92||Excellent|
|60% sulfuric acid||100||91||99||Excellent|
|20% sulfuric acid||92||92||90||Excellent|
|10% caustic potash||97||82||60||NG|
|10% caustic soda||74||47||0||NG|
|10% sodium carbonate||100||99||100||Excellent|
|28% (concentrated) ammonia water||0||0||0||NG|
|12% ammonia water||94||57||0||NG|
Table 2. Lumirror™ Chemical Resistance (100°C, 1/3/5 Hours)Unit: %
|Glacial acetic acid||98||94||97||Excellent|
|20% hydrochloric acid||100||100||96||Excellent|
|10% hydrochloric acid||100||100||100||Excellent|
|30% nitric acid||88||0||0||NG|
|20% nitric acid||100||100||98||Excellent|
|10% nitric acid||100||100||96||Excellent|
|70% sulfuric acid||83||42||0||NG|
|60% sulfuric acid||100||100||100||Excellent|
|40% sulfuric acid||100||100||100||Excellent|
|20% sulfuric acid||100||100||100||Excellent|
|10% caustic potash||62||0||0||NG|
|10% caustic soda||61||0||0||NG|
|10% sodium carbonate||93||95||88||Good|
|12% ammonia water||94||82||97||Excellent|
Table 3. Organic Solvents and Oils With a Particular Effect on Lumirror™
2. Component Extraction Ratio Based on Organic Solvent
Table 4 shows the ratio of components extracted from Lumirror™ when Lumirror™ is extracted with xylene or chloroform.
Table 4. Lumirror™ Component Extraction Ratio Based on Organic Solvent
||Component Extraction Ratio (%)
||Thickness of Sample Used for Measurement
||After drying at 110°C for 18 hours, extracted for 24 hours with xylene B.P. (140°C)
||After drying at 120°C for 2 hours, extracted for 12 hours with chloroform B.P. (61°C)
3. Conductivity and Acidity of Extract with Water
Table 5 shows the conductivity and acidity of the extract when Lumirror™ is extracted with water. The thickness of each sample measured was #75 (75 μ) and the measurement method was ASTM D 202-68.
Table 5. Lumirror™ Extract Conductivity and Acidity with Water
Lumirror™ Technical Information