Antifoaming agent for metal processing cutting fluid
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A metal processing and cutting fluid technology, applied in the field of fine chemical preparations, can solve problems such as poor compatibility, poor anti-foaming performance, and poor anti-foaming effect
Inactive Publication Date: 2011-05-18
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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Problems solved by technology
According to the characteristics of cutting fluid foaming performance, most of the defoamers used are silicone defoamers and polyether defoamers. Although silicone defoamers have excellent defoaming and antifoaming properties, their compatibility is poor. Poor; although polyether defoamer has excellent compatibility, its defoaming performance is poor
[0005] Although the organosilicon defoamer mentioned in the patent US4436647 and CN 200410027790 can obtain better defoaming effect, but the compatibility is poor, and the polyether defoamer, although the compatibility is good, but the defoaming effect Difference
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[0030] Preparation of fatty alcohol polyethers:
[0031] Prepare fatty alcohol polyethers L1, L2 and L3, the general formula of fatty alcohol polyethers is RO(EO) m (PO) n The values of H, R, m and n are shown in Table 1:
[0032] Table 1 Fatty alcohol polyethers L1, L2, and L3
[0033] Fatty alcohol polyether
L1
L2
L3
R
n-octyl
n-hexadecyl
n-Docosyl
m
2
35
50
n
10
22
55
[0034] Preparation of silicon polyether:
[0035] Prepare silicon polyether O1, O2 and O3, the structural formula of silicon polyether is:
[0036]
[0037] The silicon polyethers O1, O2 and O3 used by the different defoamers prepared by this patent method, the values of M, x, y, z, g and h are shown in Table 2:
[0038] Table 2 Silicon polyether O1, O2 and O3
[0039] Silicon polyether
O1
O2
O3
M
-H
-CH 3
-CH 2 CH 3
x
15
160
...
Embodiment
[0044] Preparation of patented defoamer:
[0045] Prepare defoamers A, B and C according to the preparation process of the patented defoamer mentioned above and the formula in Table 3. The content of each component in the formula is the content of mass percentage.
[0046] Defoaming active substance Y1 in table 3 is the defoamer described in Example 2 in CN1613537; Defoaming active substance Y2 is the defoamer described in Example 1 in CN1641097; Defoaming active substance Y3 is the defoamer described in Example 3 in CN1919936 .
[0047] Table 3 Formula of patented defoamer
[0048]
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Abstract
The invention relates to an antifoaming agent for metal processing cutting fluid, which consists of 5 to 60 percent of fatty alcohol polyether, 5 to 50 percent of polyether modified polysiloxane, 1 to 10 percent of inorganic particles and 5 to 50 percent of organosilicon antifoaming agent. Due to compounding synergism of the components, the prepared antifoaming agent has excellent stability, compatibility and foam removing and suppressing performance in the cutting fluid, and the defects of low compatibility of an organosilicon antifoaming agent and low performance of a polyether antifoaming agent in the cutting fluid are overcome.
Description
technical field [0001] The invention relates to a defoamer used in metal processing cutting fluid, which is compounded from fatty alcohol polyether, polyether modified polysiloxane, inorganic particles and organic silicon defoamer, and has excellent Stability, compatibility and anti-foaming properties. The invention belongs to the technical field of fine chemical preparations. technical background [0002] In the process of metal processing, in order to reduce the cutting force during cutting, take away the heat generated in the cutting area in time to reduce the cutting temperature and improve the durability of the tool, thereby improving production efficiency, improving the surface roughness of the workpiece, and ensuring the machining accuracy of the workpiece. For best economical results, usually use cutting fluid. [0003] Cutting fluid has the functions of lubricating, cooling, cleaning, and rust prevention in the process of metal processing. Its core function is: on...
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