The Deterioration Mechanism of Diester Aero Lubricating Oil at High Temperature

Table 1

Distribution of compounds in EO₁₈₀–EO₃₀₀.

Peak	Compound	EO180	EO200	EO230	EO250	EO270	EO300
1	2-Pentene				×	×	×
2	4-Methyl-1-hexene					×	×
3	5-Methyl-3-heptene					×	×
4	3-Methylene		×	×	×	×	×
5	2-Ethylhexanal				×	×	×
6	2-Ethylhexane-1-alcohol	×	×	×	×	×	×
7	2-Ethylhexyl acetate						×
8	2-Ethylhexyl propionate						×
9	2-Ethylhexyl butyrate				×	×	×
10	2-Ethylhexyl valerate			×	×	×	×
11	12-Hydroxydodecanoic acid						×
12	4-Isopropylcyclohexane-1,3-diketone						×
13	2-Ethylhexyl-2-methoxyethyl acetate	×	×	×	×	×	×
14	2-Ethylhexylhexanoate	×	×	×	×	×	×
15	3-Ethylhexylhexanoate	×	×	×			×
16	Unknown	×	×	×	×	×	×
17	Unsaturated esters			×	×	×	×
18	2-Ethylhexyloctanoate						×
19	Unknown	×	×	×	×	×	×
20	2-Ethylhexyldecanoate						×
21	2-Ethylhexylacryloyloate	×	×	×	×	×	×
22	Unsaturated esters	×	×	×	×	×	×
23	(E)-N-(4-Butoxybenzylidene)-4-ethylaniline	×	×	×	×	×	×
24	Unknown	×	×	×	×	×	×
25	N-Phenylnaphthalene-2-amine	×	×	×	×	×	×
26	Unknown						×
27	(E)-1-(Pentyloxy)-3-cinnamenylbenzene	×	×	×	×	×	×
28	4-Methoxy-7-(2-methylbut-3-yn-2-oxy)furano[2,3-b]quinoline	×	×	×	×	×	×
29	Diisooctyl hexanedioate	×	×	×	×	×	×
30	Triphenyl phosphate	×	×	×	×	×	×
31	6-Heptyl-6-methyl-3-(pyridin-3-yl)-6,7-dihydro-1H-indazole-4(5H)-one	×	×	×	×	×	×
32	6-(Benzyloxymethyl)-3-butyl-2,4-dihydroxybenzene(methane)al	×	×	×	×	×	×
33	Diphenyl p-benzylphosphate	×	×	×	×	×	×
34	Isomer of 36			×	×	×	×
35	Bis(2-ethylhexyl)decanedioate	×	×	×	×	×	×
36	1-(3′-Benzoyl-2,6-dimethoxybiphenyl-3-yl)ethanone	×	×	×	×	×	×
37	Isomer of 36	×	×	×	×	×	×
38	Isomer of 36	×	×	×	×	×	×
39	Isomer of 36	×	×	×	×	×	×
40	Isomer of 36	×	×	×	×	×	×
41	Isomer of 36	×	×	×	×	×	×
42	Trio-benzylphosphate	×	×	×	×	×	×
43	3-(5-(3-Hydroxy-4-methylphenyl)-1-(3-hydroxyphenyl)-1H-pyrrol-2-yl)propanoic acid	×	×	×	×	×	×
44	Phenyldip-benzylphosphate	×	×	×	×	×	×
45	4-Ethylphenylphenyl p-benzylphosphate	×	×	×	×	×	×
46	Isomer of 42	×	×	×	×	×	×
47	Isomer of 42	×	×	×	×	×	×
48	Bis(2-ethylhexyl)decanedioate	×	×	×	×	×	×
49	Isomer of 48	×	×	×	×	×	×
50	1-(2-Ethyl-5-oxohexyl) 10-(2-ethylhexyl) decanedioate	×	×	×	×	×	×