Chemical stability of SUMIKASUPER LCP

Chemical resistance of SUMIKASUPER LCP

The chemical resistance data for SUMIKASUPER LCP is shown in the table. SUMIKASUPER LCP has excellent chemical resistance and does not swell or deteriorate due to oils even at high temperatures. However, evaluation of actual molded products is required for practical use.

Table 3-5-1 Chemical resistance of SUMIKASUPER LCP

Chemical Name conditions SUMIKASUPER LCP
evaluation
Temperature (℃) Time
20% hydrochloric acid 50 30 days
20% sulfuric acid 50 30 days
40% nitric acid 50 30 days
Glacial Acetic Acid 50 30 days
10% sodium hydroxide 50 30 days ×
10% ammonia water 50 30 days ×
Acetone reflux 100hr
Methyl Ethyl Ketone reflux 100hr
Trichloroethane reflux 100hr
Methylene chloride reflux 100hr
Toluene reflux 100hr
Methanol reflux 100hr
Ethanol reflux 100hr
Ethyl acetate reflux 100hr
Dimethylformamide reflux 100hr ×
Gasoline room temperature 30 days
Engine oil 120 2000hr
Gear oil 120 2000hr
Rating: Tensile strength loss: 5% or less, weight change: 2% or less
× : Any changes greater than those listed above

Gas generated from molded products

The amount of gas generated when SUMIKASUPER LCP molded products are heated is extremely low.

Figure 3-5-1 Method for analyzing gas components generated from molded products

Figure 3-5-1 Method for analyzing gas components generated from molded products

Figure 3-5-2 Gas generation volume of SUMIKASUPER LCP

Figure 3-5-2 Gas generation volume of SUMIKASUPER LCP
Analytical Equipment : Headspace gas chromatograph
Sample pretreatment conditions :120℃, heating for 20 hours