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Trial Number 1

Trial Purpose:

To evaluate the effectiveness of solvent and aqueous based cleaners at the removal of J2 on titanium substrates.

Date Run:

08/14/2019

Experiment Procedure:

Six sets of three pre-weighed clean titanium coupons were contaminated on the bottom 1/3 of the coupon with J2 oil using a cotton swab. Cleaners were heated to vendor recommended temperatures, and coupons were immersed three at a time into a beaker for 15 minutes. Visual observations were recorded every five minutes, and final weights were recorded after cleaning.

Trial Results:

Table 1: Gravimetric Results

Cleaner Conc. (%) Temperature (°F) Initial wt. of cont. (g) Final wt. of cont. (g) %Cont. Removed (g) % Average Removal
Dowanol PnBGE 100 100 0.2660 0.0006 99.77 99.75
0.2716 0.0005 99.82
0.2971 0.0010 99.66
Metalnox 6386 100 110 0.4257 0.0046 98.92 98.64
0.3608 0.0031 99.14
0.3755 0.0080 97.87
Dimethyl glutarate 100 129 0.4796 0.0066 98.62 98.41
0.2905 0.0046 98.42
0.2362 0.0043 98.18
Liquinox 1 171 0.5055 0.0221 95.63 95.32
0.4376 0.0165 96.23
0.3164 0.0187 94.09
OzzyJuice 3 100 106 0.3677 0.1465 60.16 55.10
0.3562 0.1643 53.87
0.3015 0.1469 51.28
SC Aircraft & Metal Cleaner 1 100 0.6532 0.1620 75.20 62.42
0.6221 0.2218 64.35
0.4637 0.2424 47.72

Table 2: Visual Observations

Cleaner 5 Minutes 10 Minutes 15 Minutes
Dowanol PnBGE

-cleaner is clear

-soil is highly viscous

-soil line is not visible

-no change in substrate

 

-no change in cleaner

-soil line is not visible

-no change in substrate

-no change in cleaner

-soil line is not visible

-substrate is mainly wet

-blue plastic on back of substrate is peeling off

Metalnox 6386

-cleaner is clear

-soil is highly viscous

- soil line is not visible

-no change In substrate

-no change in cleaner

-soil line is not visible

-no change in substrate

-no change in cleaner

-soil line is not visible

-substrate is mainly wet

-blue plastic on back of substrate is peeling off

Dimethyl glutarate

-cleaner is clear

-soil is highly viscous

-soil line is not visible

-no change in  substrate

-no change in cleaner

-soil line is not visible

-no change in substrate

-no change in cleaner

-soil line is not visible

-substrate is mainly wet

-blue plastic on back of substrate is peeling off

Liquinox

-cleaner is clear with bubbles

-soil is highly viscous

-soil line is not visible

-soil sunk to bottom of beaker and formed clumps

-no change in cleaner

-no change in substrate

-soil line is not visible

-no change in cleaner

-substrate is partly dry with some clumped soil towards the bottom of the substrate’s surface

-blue plastic on back of substrate is peeling off

Ozzy Juice 3

-cleaner has a slight brownish color

-soil is highly viscous

-some soil is visually coming off

-no change in substrate

-cleaner became slightly cloudy

-soil formed clumps and submerged to the bottom of the beaker

-soil line is moving towards the bottom of the substrate

-cleaner became cloudy

-some soil submerged to the bottom of the beaker

-substrate is mainly wet

-blue plastic on back of substrate is peeling off

SC Aircraft & Metal Cleaner

-cleaner has a slight yellow color with bubbles

-soil line is visible

-no change in substrate

-some soil submerged to bottom of the beaker

-soil line is visible

-no change in substrate

-no change in cleaner

 

-some soil submerged to the bottom of the beaker

-soil line moved towards the bottom of the substrate

-substrate is slightly wet

-blue plastic on back of substrate is peeling off

 

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Dowanol PnBGE, Metalnox 6386, Dimethyl glutarate, and Liquinox were the most effective at removing J2 soil from titanium substrates using heated immersion.

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