Non-phosphorus non-silicon corrosion inhibitor DMAE "special ester corrosion inhibitor"

Release time:

2023-09-13

Product Introduction

Special ester lubricants；
Good corrosion inhibition performance for non-ferrous metals, especially suitable for aluminum alloy corrosion inhibition；
Low foam, less bubble trouble；
Good lubrication performance can reduce the amount of synthetic ester, polyether and other lubricants added in the formula；
Compatible with cationic precipitating agents；
Recommended for use in various systems of metal working fluids；
It is recommended to add 2.0%-5.0% in the formula

DMAE basic data

Project	DMAE	Detection method
Exterior	Yellow translucent viscous liquid	Visual inspection
Density（20℃，g/cm3）	0.969	ISO3675
Acid value（mg KOH/g）	266.0	ASTM D664
Kinematic viscosity at 100℃（mm2/s）	73.9	ASTM D445
Solubility in water	Soluble in water	-

Note: The above data are typical product data and should not be regarded as a quality report.

Performance Testing

Single agent corrosion inhibition performance test

Test method: Polish the ADC12 aluminum sheet and half-immerse it in 1% MEA aqueous solution, then add DMAE gradually, and place it at room temperature to observe the corrosion of the aluminum sheet.

Comparison of corrosion inhibition properties of DMAE on aluminum after being left at room temperature for 24 hours.
Project	Blank Sample	1%DMAE	2%DMAE	3%DMAE	4%DMAE
Photo

Conclusion: By gradually adding DMAE, the corrosion of aluminum by MEA gradually decreases.

2.Corrosion inhibition performance in metal working fluids

Test Recipe

Raw Material Name	Plan 1	Plan 2	Plan 3	Plan 4
Water	54.7%	54.7%	54.7%	54.7%
Diethanolamine	10.0%	10.0%	10.0%	10.0%
RP010	15.0%	15.0%	15.0%	15.0%
RP1145	2.0%	-	2.0%	-
Boric acid	-	2.0%	-	2.0%
MAXWELL P135	0.3%	0.3%	0.3%	0.3%
DMAE	4.0%	4.0%	-	-
Silicone	-	-	4.0%	4.0%
PE943	10.0%	10.0%	10.0%	10.0%
N-octanoic acid	4.0%	4.0%	4.0%	4.0%

Here we will conduct a comparative test based on the above reference formula to compare the performance of Shanghai Yucheng Chemical DMAE and the more common siloxanone corrosion inhibitors on the market, and demonstrate the impact of boron compounds on DMAE corrosion inhibition performance. The above formulas are all transparent after preparation Homogeneous liquid.

1.Comparison of corrosion inhibition performance

Test method: Configure the above test formulas 1, 2, 3 and 4 into 100ml of 5% dilution (Shanghai residents’ tap water). Polish the ADC12 aluminum sheet and soak it half in the aqueous solution at 50 degrees and leave it for 8 hours. Observe the corrosion of aluminum sheets

Aluminum corrosion inhibition performance comparison

	Plan 1	Plan 2	Plan 3	Plan 4
5%PH	8.80	8.81	9.21	9.20
Photo

Conclusion: Boric acid inorganic salts compete with DMAE, causing the corrosion inhibition performance of DMAE to fail. The corrosion inhibition performance of DMAE is equivalent to that of silicone ketones.

2.Lubrication Performance Test

Test method: Dilute the above reference formula scheme 1 and scheme 3 into 10% diluent (Shanghai residents' tap water), and compare the tapping torque lubrication performance.

Test tool: Microtap tapping torque machine

12mm Tapping depth: 12mm

Tapping hole diameter: M3 hole

Speed: 1200RPM

Tapping torque: 400NCM

Material: AL7075

Project	Plan 1	Plan 3
MAX	163	170
MEAN,%	94.5	100.0

Conclusion: DMAE has a positive synergistic effect on lubrication performance.

3.Tolerance to cationic precipitating agents

Test method: Dilute the above reference formula scheme 2 and scheme 4 into a 10% diluent (Shanghai residents' tap water), add 1% cationic precipitant D77 to the diluent, and store it at high temperature for 1 week at 70 degrees to observe its stability. Sex. (Silanes will self-polymerize into polymers under acidic or weakly alkaline conditions, leading to crystallization. Therefore, siloxanes will precipitate in large quantities in low alkaline environments or in the presence of cationic precipitation agents.)

Project	Plan 2	Plan 4
In conclusion	No precipitaion or precipitation	Precipitate
Photo

Conclusion: DMAE is fully compatible with cationic settling agents.

Product Summary:：

DMAE has good corrosion inhibition properties, but it competes with some additives for adsorption, requiring formulators to carefully adjust the compound in the formula.
DMAE has certain lubricating properties and has a positive effect on lubrication;
DMAE is compatible with cationic settling agents.