Allyl-containing block polyether, preparation method and application thereof, and water-based cutting fluid

Abstract

The invention discloses an allyl-containing block polyether, a preparation method and application thereof, and a water-based cutting fluid. The structure of the allyl-containing block polyether is shown as a formula I; wherein R is C1-C10 alkyl, x is an integer from 10 to 15, y is an integer from 20 to 30, and z is an integer from 10 to 15. The water-based cutting fluid comprises a lubricating and wetting agent, a water-based antirust agent and water, wherein the lubricating and wetting agent comprises allyl-containing block polyether with a structure as shown in a formula I. The invention further discloses a preparation method of the water-based cutting fluid. The allyl-containing block polyether does not contain elements such as P, N and B and has a lubricating effect, and the block polyether can be adopted as a lubricating agent under conventional working conditions such as a non-extreme pressure condition. # imgabs0 #

Description

Technical Field

[0001] The invention relates to an allyl-containing block polyether, a preparation method, application and a water-based cutting fluid. Background Art

[0002] When cutting rubidium magnets, the cutting fluid is required to have excellent lubrication and anti-rust properties during the cutting process, and be able to effectively suspend and disperse abrasives such as rubidium magnets into the cutting mortar to reduce friction resistance during the cutting process.

[0003] Water-based cutting fluid has good cooling, lubricity and dispersibility, but the existing water-based cutting fluid generally uses lubricating components containing elements such as P, N, and B, which are not environmentally friendly.

[0004] Therefore, how to provide a water-based cutting fluid with excellent lubrication performance and environmental protection performance is a technical problem to be solved urgently in this field. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the water-based cutting fluid in the prior art that it is either unfriendly to the environment or has poor lubrication performance, and to provide an allyl-containing block polyether and its preparation method, application, and water-based cutting fluid.

[0006] The present invention creatively adopts a block polyether with an allyl group as a lubricating wetting agent, while the components with lubricating effect used in general water-based cutting fluids are all elements such as P, N, B, etc., which are not environmentally friendly. The block polyether containing an allyl group in the present invention does not contain elements such as P, N, B, etc., and has a lubricating effect. For conventional working conditions, such as non-extreme pressure conditions, the block polyether can be used as a lubricant.

[0007] In addition, the allyl-containing block polyether of the present invention has low foaming properties, and the hydrophilic and lipophilic groups in its structure are arranged in a staggered manner, which hinder each other in space and form a large number of gaps between the liquid films, thereby weakening the strength of the liquid film and making the formed foam film wall more easily broken. The allyl-containing block polyether of the present invention also has better wettability, is easy to spread, and has lower surface tension.

[0008] The present invention provides an allyl-containing block polyether, the structure of which is shown in Formula I:

[0009] ;

[0010] Where R is C1~C 10 wherein x is an integer of 10 to 15, y is an integer of 20 to 30, and z is an integer of 10 to 15.

[0011] In some embodiments of the present invention, R is a C1~C5 alkyl group, for example, a C1 alkyl group, -CH2-.

[0012] In some embodiments of the present invention, x is 10 or 15.

[0013] In some embodiments of the present invention, y is an integer of 25 to 30, for example 25 or 30.

[0014] In some embodiments of the present invention, z is 10 or 15.

[0015] In some embodiments of the present invention, x is 15, y is 25, and z is 10.

[0016] In some embodiments of the present invention, x is 15, y is 30, and z is 15.

[0017] In some embodiments of the present invention, x is 10, y is 25, and z is 15.

[0018] In some embodiments of the present invention, the x, y, and z satisfy the condition: (x+z) / y=0.8-1.2, for example, 1.0.

[0019] In some embodiments of the present invention, the molecular weight of the allyl-containing block polyether is 2000-3200, for example, 2540, 3046, 2546 or 2578.

[0020] In some embodiments of the present invention, in the allyl group-containing block polyether, the polydispersity PDI (Polydispersity) is less than 1.3, such as 1.1-1.2, and also such as 1.06, 1.08 or 1.07.

[0021] In some embodiments of the present invention, the double bond protection rate of the allyl group-containing block polyether is 95-98%.

[0022] In the present invention, the double bond protection rate refers to the iodine value of the product after polymerization / the iodine value of the raw material before polymerization*100%.

[0023] The present invention also provides a method for preparing an allyl-containing block polyether, which comprises the following steps:

[0024] Allyl alcohol is sequentially introduced into ethylene oxide A for the first time, propylene oxide for the second time, and ethylene oxide B for the third time to react, thereby obtaining an allyl-containing block polyether;

[0025] The structural formula of the allyl alcohol is CH2=CH-R-OH, wherein R is C1~C 10 The alkyl group;

[0026] The molar ratio of the ethylene oxide A to the propylene oxide is 1:(1.3-3.0);

[0027] The molar ratio of the ethylene oxide B to the propylene oxide is 1:-(1.3-3.0).

[0028] In some embodiments of the present invention, R is a C1~C5 alkyl group, for example, a C1 alkyl group, -CH2-.

[0029] In the present invention, ethylene oxide A and ethylene oxide B have no special meanings, and only represent the order of introducing ethylene oxide, wherein ethylene oxide A refers to the ethylene oxide introduced for the first time; ethylene oxide B refers to the ethylene oxide introduced for the second time.

[0030] In some embodiments of the present invention, the molar ratio of the ethylene oxide A to the propylene oxide is 1:(1.5-2.5), for example, 1:1.68, 1:2.03, 1:1.67 or 1:2.50.

[0031] In some embodiments of the present invention, the molar ratio of the ethylene oxide B to the propylene oxide is 1:(1.5-3.0), for example, 1:2.52, 1:2.04, 1:2.51 or 1:1.70.

[0032] In some embodiments of the present invention, the molar ratio of the allyl alcohol to the ethylene oxide A is 1:(5-20), for example 1:(5-16), and for example 1:15.3 or 1:10.3.

[0033] In some embodiments of the present invention, the molar ratio of the allyl alcohol to the propylene oxide is 1:(20-40), for example 1:(20-35), and for example 1:25.7, 1:31, 1:25.6 or 1:25.8.

[0034] In some embodiments of the present invention, the molar ratio of the allyl alcohol to the ethylene oxide B is 1:(5-20), for example 1:(5-16), and for example 1:10.2 or 1:15.2.

[0035] In some embodiments of the present invention, the reaction temperature is 80-100°C, such as 85-90°C.

[0036] In some embodiments of the present invention, the reaction pressure is 0-0.5 MPa, for example 0.1 MPa.

[0037] In some embodiments of the present invention, the endpoint of the reaction is the reaction until there is no change in pressure.

[0038] In some embodiments of the present invention, the post-reaction post-treatment is to extract low boiling points and then cool the material to 40°C before discharging.

[0039] In one embodiment of the present invention, the molar ratio of the ethylene oxide A to the propylene oxide is 1:1.68, and the molar ratio of the ethylene oxide B to the propylene oxide is 1:2.52.

[0040] In one embodiment of the present invention, the molar ratio of the ethylene oxide A to the propylene oxide is 1:2.03, and the molar ratio of the ethylene oxide B to the propylene oxide is 1:2.04.

[0041] In one embodiment of the present invention, the molar ratio of the ethylene oxide A to the propylene oxide is 1:1.67, and the molar ratio of the ethylene oxide B to the propylene oxide is 1:2.51.

[0042] In one embodiment of the present invention, the molar ratio of the ethylene oxide A to the propylene oxide is 1:2.50, and the molar ratio of the ethylene oxide B to the propylene oxide is 1:1.70.

[0043] In one embodiment of the present invention, the method for preparing the allyl-containing block polyether comprises the following steps:

[0044] A quantitative amount of allyl alcohol is added to the reactor, N2 is replaced, the temperature is raised to the specified temperature, ethylene oxide, ethylene oxide and ethylene oxide are introduced successively, and the reaction is carried out under the conditions of temperature and pressure of 80~100°C and 0~0.5 MPa, respectively. After the quantitative amount of epoxide is passed through, the temperature is kept until the pressure does not change. After the low boiling point is extracted, the temperature is lowered to 40°C and the material is discharged to obtain the allyl-containing block polyether.

[0045] The present invention also provides an allyl-containing block polyether, which is prepared by the above-mentioned preparation method.

[0046] The present invention also provides a water-based cutting fluid, which includes a lubricating wetting agent, a water-based rust inhibitor, and water.

[0047] The lubricating and wetting agent comprises the allyl group-containing block polyether.

[0048] In the present invention, the lubricating and wetting agent in the water-based cutting fluid generally plays the role of lubrication and wetting, and can wet and disperse the powder generated during the cutting process, reduce the friction resistance generated during the cutting process, and improve the cutting efficiency.

[0049] In some embodiments of the present invention, the mass fraction of the lubricating and wetting agent is 10-30%, such as 10-20%, and also such as 15% or 20%, where the percentage refers to the mass percentage in the water-based cutting fluid.

[0050] In some embodiments of the present invention, the water is deionized water.

[0051] In the present invention, the water-based rust inhibitor generally has the function of preventing rust.

[0052] In some embodiments of the present invention, the type of the water-based rust inhibitor is selected from one or more of distilled water, undecane dicarboxylic acid, dodecane dicarboxylic acid, dodecenyl succinic acid, tribasic polycarboxylic acid, monoethanolamine, triethanolamine, cyclohexylamine ethoxylate, alkyl alcoholamine, and monoisopropanolamine, for example, any one, any two, or any three thereof, for example, one or more of distilled water, tribasic polycarboxylic acid, dodecane dicarboxylic acid, monoethanolamine, and triethanolamine; for example, the water-based rust inhibitor is selected from distilled water, tribasic polycarboxylic acid, dodecane dicarboxylic acid, monoethanolamine, and triethanolamine.

[0053] In some embodiments of the present invention, the water-based rust inhibitor is selected from distilled water, tribasic polycarboxylic acid, dodecanedioic acid, monoethanolamine and triethanolamine.

[0054] In the present invention, the ternary polycarboxylic acid may be a conventional ternary polycarboxylic acid in the art, for example .

[0055] In some embodiments of the present invention, the mass fraction of the water-based rust inhibitor is 20-30%, for example, 20% or 30%, where the percentage refers to the mass percentage in the water-based cutting fluid.

[0056] In some embodiments of the present invention, the water-based rust inhibitor comprises:

[0057] Distilled water 10%

[0058] Ternary polycarboxylic acid 20~25%

[0059] Dodecanedioic acid 5~10%

[0060] Monoethanolamine 20~25%

[0061] Triethanolamine 35~40%;

[0062] The percentage refers to the mass percentage in the water-based rust inhibitor.

[0063] In some embodiments of the present invention, the water-based rust inhibitor comprises:

[0064] Distilled water 10%

[0065] Ternary polycarboxylic acid 20%

[0066] Dodecanedioic acid 10%

[0067] Monoethanolamine 20%

[0068] Triethanolamine 40%;

[0069] The percentage refers to the mass percentage in the water-based rust inhibitor.

[0070] In some embodiments of the present invention, the water-based rust inhibitor comprises:

[0071] Distilled water 10%

[0072] Ternary polycarboxylic acid 25%

[0073] Dodecanedioic acid 5%

[0074] Monoethanolamine 20%

[0075] Triethanolamine 40%;

[0076] The percentage refers to the mass percentage in the water-based rust inhibitor.

[0077] In some embodiments of the present invention, the water-based rust inhibitor comprises:

[0078] Distilled water 10%

[0079] Ternary polycarboxylic acid 20%

[0080] Dodecanedioic acid 10%

[0081] Monoethanolamine 25%

[0082] Triethanolamine 35%;

[0083] The percentage refers to the mass percentage in the water-based rust inhibitor.

[0084] In a preferred embodiment of the present invention, the water-based cutting fluid comprises the following components by mass fraction:

[0085] The water-based cutting fluid comprises the following ingredients:

[0086] Lubricating and wetting agent: 10~30%;

[0087] Water-based rust inhibitor: 20~30%;

[0088] Water: balance;

[0089] The percentage refers to the mass percentage in the water-based cutting fluid.

[0090] In a preferred embodiment of the present invention, the water-based cutting fluid further includes one or more of a coupling agent, a sedimentation agent, an antibacterial agent and an additive.

[0091] In the present invention, the coupling agent generally functions to solubilize or assist solubilization.

[0092] In some embodiments of the present invention, the type of the coupling agent is selected from one or more of anhydrous ethanol, ethylene glycol, propylene glycol, polyethylene glycol, octanoic acid, isononanoic acid or neodecanoic acid, such as any one or any two, and also such as neodecanoic acid.

[0093] In the present invention, the neodecanoic acid refers to a series of isomers of decanoic acid with branches, and the structural formula is: .

[0094] In some embodiments of the present invention, the mass fraction of the coupling agent is 1-3%, for example, 2%, and the percentage refers to the mass percentage in the water-based cutting fluid.

[0095] In the present invention, the sedimentation agent generally serves to sediment the powder abrasive produced during the cutting process, such as the abrasive of the neodymium magnet.

[0096] In some embodiments of the present invention, the type of the sedimentation agent is selected from one or more of Guerbet alcohol-based glycoside triethylamine quaternary ammonium salt, cinnamyl alcohol-based glycoside triethylamine quaternary ammonium salt, coconut oil alcohol-based glycoside trimethylamine quaternary ammonium salt, trimethylamine quaternary ammonium salt polyacrylamide, polydichloroethyl ether tetramethylethylenediamine or polyacrylic acid, for example, any one or any two, and for example, polydichloroethyl ether tetramethylethylenediamine.

[0097] In some embodiments of the present invention, the poly(dichloroethyl ether tetramethylethylenediamine) is purchased from Buckman Busan77.

[0098] In some embodiments of the present invention, the mass fraction of the sedimentation agent is 1-3%, for example, 2%, and the percentage refers to the mass percentage in the water-based cutting fluid.

[0099] In some embodiments of the present invention, the type of the antibacterial agent is selected from n-butylbenzisothiazolinone and / or benzisothiazolinone, such as n-butyl-benzisothiazolin-3-one.

[0100] In some embodiments of the present invention, the mass fraction of the antibacterial agent is 1-3%, for example 2%, and the percentage refers to the mass percentage in the water-based cutting fluid.

[0101] In some embodiments of the present invention, the additive is any one, any two or any three of an antioxidant, an antifungal agent and a defoaming agent. For example, the additive is a defoaming agent.

[0102] In some embodiments of the present invention, the defoaming agent is a substance containing dodecynediol, such as a dodecynediol solution, or a dipropylene glycol solution containing dodecynediol.

[0103] In some embodiments of the present invention, the mass fraction of the additive is 0-1.0%, for example 0.2%, where the percentage refers to the mass percentage in the water-based cutting fluid.

[0104] In a preferred embodiment of the present invention, the water-based cutting fluid comprises the following components by mass fraction:

[0105] Lubricating and wetting agent: 10-30%; the lubricating and wetting agent comprises the allyl-containing block polyether;

[0106] Water-based rust inhibitor: 20~30%;

[0107] Coupling agent: 0~5%;

[0108] Sedimentation agent: 0~5%;

[0109] Antimicrobial agent: 0~3%;

[0110] Additives: 0~10%;

[0111] Water: balance;

[0112] The percentage refers to the mass percentage in the water-based cutting fluid.

[0113] In a preferred embodiment of the present invention, the water-based cutting fluid comprises the following components by mass fraction:

[0114] Lubricating and wetting agent: 20%; the lubricating and wetting agent comprises the allyl-containing block polyether;

[0115] Water-based rust inhibitor: 20%;

[0116] Coupling agent: 2%;

[0117] Sedimentation agent: 2%;

[0118] Antimicrobial: 2%;

[0119] Additives: 0.2%;

[0120] Water: balance;

[0121] The percentage refers to the mass percentage in the water-based cutting fluid.

[0122] In a preferred embodiment of the present invention, the water-based cutting fluid comprises the following components by mass fraction:

[0123] Lubricating and wetting agent: 15%; the lubricating and wetting agent comprises the allyl-containing block polyether;

[0124] Water-based rust inhibitor: 20%;

[0125] Coupling agent: 2%;

[0126] Sedimentation agent: 2%;

[0127] Antimicrobial: 2%;

[0128] Additives: 0.2%;

[0129] Water: balance;

[0130] The percentage refers to the mass percentage in the water-based cutting fluid.

[0131] The present invention also provides a method for preparing the water-based cutting fluid, which comprises the following steps:

[0132] The allyl group-containing block polyether, the water-based rust inhibitor and the water are mixed to obtain;

[0133] When the water-based cutting fluid also contains one or more of the coupling agent, the sedimentation agent, the antibacterial agent and the additive, the allyl-containing block polyether, the water-based rust inhibitor, the water, the coupling agent, the sedimentation agent, the antibacterial agent and the additive are mixed to obtain the cutting fluid.

[0134] In some embodiments of the present invention, the method for preparing the water-based cutting fluid comprises the following steps:

[0135] The allyl group-containing block polyether and the water-based rust inhibitor are mixed to obtain a mixed solution A;

[0136] The mixed solution A is mixed with the coupling agent, the sedimentation agent, the antibacterial agent and the additive to obtain a mixed solution B;

[0137] The mixed liquid B and the water are mixed to obtain the water-based cutting fluid.

[0138] The present invention also provides an application of the allyl-containing block polyether as a lubricating wetting agent in the cutting of a nepheline magnet.

[0139] The present invention also provides an application of the water-based cutting fluid as a cutting fluid in cutting a rubidium magnet.

[0140] In the present invention, the neodymium magnet is also called a neodymium iron boron magnet (NdFeB magnet), which is composed of neodymium, iron, and boron (Nd2Fe 14 B) Tetragonal crystals formed.

[0141] The present invention also provides a processing fluid, which comprises the water-based cutting fluid.

[0142] In some embodiments of the present invention, the content of the water-based cutting fluid is 1-50%, for example, 10%, where the percentage refers to the mass percentage in the machining fluid.

[0143] In the present invention, pressure refers to absolute pressure.

[0144] In the present invention, polydispersity (PDI) refers to the heterogeneity of molecular weight, PdI = Mw / Mn.

[0145] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0146] The reagents and raw materials used in the present invention are commercially available.

[0147] The positive and progressive effects of the present invention are:

[0148] (1) The lubricating components generally used in existing water-based cutting fluids mostly contain elements such as P, N, and B, which are not environmentally friendly. The lubricating wetting agent used in the present invention is a block polyether with an allyl group. The block polyether has a lubricating effect. For conventional working conditions, such as non-extreme pressure conditions, the block polyether can be used as a lubricant. The allyl-containing block polyether in the present invention has low foaming properties because the hydrophilic and lipophilic groups are staggered and mixed, and the spaces hinder each other and form a large number of gaps between the liquid films, which weakens the strength of the liquid film and makes the formed foam film wall more easily broken. The allyl-containing block polyether in the present invention also has better wettability, is easy to spread, and has lower surface tension.

[0149] (2) The cutting fluid containing the allyl block polyether in the present invention has excellent lubrication and anti-rust properties, which are significantly better than commercially available competing products. BRIEF DESCRIPTION OF THE DRAWINGS

[0150] Figure 1 This is the infrared spectrum of the allyl-containing block polyether in Example 2.

[0151] Figure 2 This is the gel chromatogram of the allyl-containing block polyether ester in Example 2. DETAILED DESCRIPTION

[0152] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods in the following examples without specifying specific conditions are carried out according to conventional methods and conditions, or selected according to the product specifications.

[0153] In the following embodiments and comparative examples:

[0154] Ternary polycarboxylic acid refers to a compound containing three carboxylic acid groups, and its structural formula is:

[0155] , is a commercially available rust inhibitor tribasic acid;

[0156] Dodecanedioic acid refers to a straight-chain aliphatic dibasic acid containing 12 carbon atoms in the carbon chain, and its general structural formula is HOOC(CH2) 10 COOH;

[0157] Monoethanolamine refers to 2-hydroxyethylamine, with the chemical formula C2H7NO;

[0158] Triethanolamine refers to tri(2-hydroxyethyl)amine, which can be regarded as a trihydroxyl substitution product of triethylamine. Its chemical formula is C6H 15 NO3;

[0159] Neodecanoic acid refers to a series of branched isomers of decanoic acid with the structural formula: ;

[0160] Poly(dichloroethyl ether tetramethylethylenediamine), molecular formula (C6H 16 N2·C4H8Cl2O) x , purchased from Buckman Busan77;

[0161] n-Butyl-benzisothiazolin-3-one, chemical formula is C 11 H 13 NOS;

[0162] Defoaming agents are substances containing dodecynediol as an active ingredient, such as a dipropylene glycol solution containing dodecynediol;

[0163] Commercially available polyether: molecular weight 2500, fatty alcohol polyether.

[0164] Example 1-4 Preparation of Lubricating and Wetting Agent

[0165] The lubricating and wetting agent is a block polyether with an allyl group.

[0166] General structure:

[0167]

[0168] Wherein R is -CH2-, x is 10-15, y is 20-30, and z is an integer of 10-15.

[0169] The synthesis process is:

[0170] A quantitative amount (300 g) of allyl alcohol is added to the reactor, replaced by N2, and the temperature is raised to a specified temperature (80-100 ° C). Ethylene oxide (according to a molar ratio of 1:10-1:15), propylene oxide (according to a molar ratio of 1:20-1:30) and ethylene oxide (according to a molar ratio of 1:10-1:15) are introduced successively, and the reaction is carried out at a temperature and pressure of 80-100 ° C and 0-0.5 MPa, respectively. After the quantitative amount of epoxide is passed through, the temperature is kept until the pressure does not change. After the low-boiling substances are extracted, the temperature is lowered to 40 ° C and the material is discharged to obtain a block polyether with an allyl group having a high double bond content and a narrow molar mass distribution.

[0171] Table 1

[0172]

[0173] Note: Ethylene oxide A refers to the ethylene oxide introduced for the first time; Ethylene oxide B refers to the ethylene oxide introduced for the second time.

[0174] Table 2

[0175]

[0176] (1) Infrared test

[0177] Infrared test: ATR method of Thermo Scientific Nicolet iS5 of Thermo Fisher Scientific was used.

[0178] Take the block polyether in Example 2 and conduct infrared testing. Figure 1 It can be seen that 3502cm -1 It is the characteristic absorption of -OH and water, 2865 cm -1 It is the stretching vibration absorption of CH3 and CH2 on the main chain, 1348 cm -1 is the bending vibration of CH3, indicating the presence of propylene oxide, 1090 cm -1 It is the characteristic absorption of -O-, indicating the formation of ether bond, 932 cm -1 The characteristic peak of CH in the nearby allyl group indicates the presence of allyl groups, and infrared indicates the formation of allyl polyether.

[0179] The infrared spectra of the block polyethers in Examples 1, 3 and 4 are similar to that of Example 1.

[0180] (2) Molecular weight and molecular weight distribution (PDI): The test was performed using a Waters e2695 size exclusion chromatograph from the United States. The mobile phase was tetrahydrofuran, the column temperature was 35°C, and the flow rate was 1 mL / min. A series of PEG standard samples were used to make a calibration curve. MW refers to the weight-average molecular weight, and polydispersity (PDI) refers to the molecular weight distribution. When the PDI value is <1.1, it is considered to be a narrow distribution.

[0181] according to Figure 2 It can be seen that the molecular weight of the block polyether synthesized in Example 2 is 2500±500, and the MP (maximum peak molecular weight) is 2902 Daltons. According to the gel chromatography test results, Mn (number average molecular weight) is 2650 Daltons, Mw (weight average molecular weight) is 2835 Daltons, Mz (Z average molecular weight) is 3040 Daltons, Mz+1 (Z+1 average molecular weight) is 3287 Daltons, and PDI (polydispersity, Mw / Mn) is 1.069865.

[0182] (3) Double bond protection rate = iodine value of the product after polymerization / iodine value of the raw material before polymerization * 100%. The double bond protection rate is between 95-98%.

[0183] Examples 5-11, Comparative Example 1

[0184] The cutting fluid formulas are shown in Tables 3 and 4 below, in parts by mass.

[0185] Table 3

[0186]

[0187] Table 4

[0188]

[0189] The cutting fluid formulation preparation method of Examples 5-11 is as follows:

[0190] At room temperature, the block polyether with allyl group and the water-based rust inhibitor are first mixed and stirred evenly. After the solution is uniform and stable, a coupling agent, a sedimentation agent, an antibacterial agent and other additives are added. After mixing evenly, water is added to make a water-based cutting fluid.

[0191] The cutting fluid formulation preparation method of Comparative Example 1 is as follows:

[0192] At room temperature, firstly mix the commercially available polyether and the water-based rust inhibitor and stir evenly. After the solution is uniform and stable, add the coupling agent, the sedimentation agent, the antibacterial agent and other additives. After mixing evenly, add water to make the water-based cutting fluid.

[0193] Effect Example 1

[0194] (1) The lubricity of the 10% machining fluid was tested. The preparation method of the 10% machining fluid was as follows: 10% water-based cutting fluid: 200 ppm hard water was first prepared (the preparation method was: 0.3449 g / L of dihydrated sulfate (CaSO4·2H2O) was dissolved in distilled water), then 90 g of 200 ppm hard water was weighed, and 10 g of the water-based cutting fluid in Examples 5-11 was added respectively, and stirred evenly.

[0195] The test method for lubricity is as follows: the test instrument used is the German Microtap TTT thread processing torque test system, and the test conditions are 10%-45# steel-600 rotation speed / 12mm depth.

[0196] The lubricity test results are shown in Table 3.

[0197] (2) The rust resistance of the 2% machining fluid was tested. The preparation method of the 2% machining fluid was as follows: 2% water-based cutting fluid: first prepare 200 ppm of hard water (the preparation method is: 0.3449 g / l of dihydrate sulfate (CaSO4·2H2O) dissolved in distilled water), then weigh 98 grams of 200 ppm hard water, add 2 grams of the water-based cutting fluid in Examples 5-11 respectively, and stir evenly.

[0198] Rust resistance evaluation reference method IP 287 scoring:

[0199] 5.0 points means that the percentage of rust spots in the rust spot area observed by filter paper is 0%.

[0200] 4.5 points means that the rust spots in the filter paper area account for 2%.

[0201] 4.0 points means that the rust spots in the filter paper observation area account for 5%.

[0202] 3.5 points means that the rust spots in the filter paper area account for 10%.

[0203] 3.0 points means that the rust spots in the filter paper area account for 20%.

[0204] 2.5 points means that the rust spots in the filter paper area account for 30%.

[0205] 2.0 points means that the rust spots in the filter paper area account for 40% of the total area.

[0206] 1.5 points means that the rust spots in the filter paper area account for 50% of the total area.

[0207] 1.0 means that the rust spots in the filter paper area account for 70% of the total area.

[0208] 0.5 points means that the rust spots in the filter paper area account for 90%.

[0209] 0.0 means that the proportion of rust spots in the rust spot area observed by filter paper is 100%.

[0210] The rust resistance test results are shown in Table 5.

[0211] Table 5

[0212]

[0213] Note: Commercial Competitor 1, Commercial Competitor 2, and Commercial Competitor 3 refer to water-based cutting fluids currently available on the market.

[0214] According to Table 5, the cutting fluids in Examples 5-11 have excellent lubrication and rust prevention properties, which are significantly better than commercially available polyethers and commercially available competing products.

[0215] Effect Example 2

[0216] The test method for lubricity is as follows: the test instrument used is the German Microtap TTT thread processing torque test system, and the test conditions are 10%-45# steel-600 rotation speed / 12mm depth.

[0217] The lubricity of 10% block polyether was tested. The preparation method of 10% block polyether was as follows: 200 ppm hard water was first prepared (the preparation method was: 0.3449 g / L of dihydrate sulfate (CaSO4·2H2O) was dissolved in distilled water), then 90 g of 200 ppm hard water was weighed, 10 g of the block polyether in Example 1 was added, and stirred evenly.

[0218] The lubricity of the 10% machining fluid was tested. The preparation method of the 10% machining fluid was as follows: 10% water-based cutting fluid: first prepare 200 ppm of hard water (the preparation method is: 0.3449 g / L of dihydrated sulfate (CaSO4·2H2O) is dissolved in distilled water), then weigh 90 grams of 200 ppm hard water, add 10 grams of the water-based cutting fluid in Example 5, and stir evenly.

[0219] Table 6

[0220]

[0221] The smaller the average torque value (Ncm), the better the lubrication. According to Table 6, after the block polyether in the present invention is configured as a cutting fluid, it can still maintain good lubrication performance.

Claims

1. An allyl-containing block polyether, characterized in that: Its structure is shown in Formula I: ； Where R is C1~C 10 wherein x is an integer of 10 to 15, y is an integer of 20 to 30, and z is an integer of 10 to 15.

2. The allyl group-containing block polyether according to claim 1, characterized in that The allyl-containing block polyether satisfies one or more of the following conditions: (1) R is a C1-C5 alkyl group, such as a C1 alkyl group, -CH2-; (2) x is 10 or 15; (3) y is an integer of 25 to 30, such as 25 or 30; (4) z is 10 or 15; for example: x is 15, y is 25, z is 10, x is 15, y is 30, z is 15, x is 10, y is 25, z is 15; (6) x, y, and z satisfy the condition: (x+z) / y=0.8-1.2, for example, 1.0; (7) the molecular weight of the allyl-containing block polyether is 2000-3200, such as 2540, 3046, 2546 or 2578; and (8) In the allyl group-containing block polyether, the polydispersity PDI is less than 1.3, such as 1.1-1.2, and also such as 1.06, 1.08 or 1.

07.

3. A method for preparing an allyl-containing block polyether, characterized in that: It includes the following steps: Allyl alcohol is sequentially introduced into ethylene oxide A for the first time, propylene oxide for the second time, and ethylene oxide B for the third time to react, thereby obtaining an allyl-containing block polyether; The structural formula of the allyl alcohol is CH2=CH-R-OH, wherein R is C1~C 10 The R may be a C1~C5 alkyl group, for example, a C1 alkyl group, -CH2-; The molar ratio of the ethylene oxide A to the propylene oxide is 1:(1.3-3.0); The molar ratio of the ethylene oxide B to the propylene oxide is 1:(1.3-3.0).

4. The method for preparing the allyl-containing block polyether according to claim 3, characterized in that: The preparation method of the allyl-containing block polyether meets one or more of the following conditions: (9) The molar ratio of the ethylene oxide A to the propylene oxide is 1:(1.5-2.5), for example, 1:1.68, 1:2.03, 1:1.67 or 1:2.50; (10) The molar ratio of the ethylene oxide B to the propylene oxide is 1:(1.5-3.0), for example, 1:2.52, 1:2.04, 1:2.51 or 1:1.70; (11) The molar ratio of the allyl alcohol to the ethylene oxide A is 1:(5-20), for example 1:(5-16), and for example 1:15.3 or 1:10.3; (12) The molar ratio of the allyl alcohol to the propylene oxide is 1:(20-40), for example 1:(20-35), and for example 1:25.7, 1:31, 1:25.6 or 1:25.8; (13) The molar ratio of the allyl alcohol to the ethylene oxide B is 1:(5-20), for example 1:(5-16), and for example 1:10.2 or 1:15.2; (14) the reaction temperature is 80-100°C, for example 85-90°C; and (15) The reaction pressure is 0-0.5 MPa, for example 0.1 MPa.

5. An allyl-containing block polyether, characterized in that: It is prepared by the preparation method as claimed in claim 3 or 4.

6. A water-based cutting fluid, characterized in that: It includes lubricating and wetting agent, water-based rust inhibitor, water, The lubricating and wetting agent comprises the allyl group-containing block polyether as claimed in any one of claims 1 to 2 and 5.

7. The water-based cutting fluid according to claim 6, characterized in that: The water-based cutting fluid meets one or more of the following conditions: (16) The mass fraction of the lubricating and wetting agent is 10-30%, for example 10-20%, and for example 15% or 20%, where the percentage refers to the mass percentage in the water-based cutting fluid; (17) The water is deionized water; (18) The water-based rust inhibitor is selected from one or more of distilled water, undecane dicarboxylic acid, dodecane dicarboxylic acid, dodecenyl succinic acid, tribasic polycarboxylic acid, monoethanolamine, triethanolamine, cyclohexylamine ethoxylate, alkyl alcoholamine, and monoisopropanolamine, for example, any one, any two, or any three thereof, for example, one or more of distilled water, tribasic polycarboxylic acid, dodecane dicarboxylic acid, monoethanolamine, and triethanolamine; for example, the water-based rust inhibitor is selected from distilled water, tribasic polycarboxylic acid, dodecane dicarboxylic acid, monoethanolamine, and triethanolamine; The structure of the ternary polycarboxylic acid may be: ； (19) The mass fraction of the water-based rust inhibitor is 20-30%, for example 20% or 30%, where the percentage refers to the mass percentage in the water-based cutting fluid; Preferably, the water-based rust inhibitor comprises: Distilled water 10% Ternary polycarboxylic acid 20~25% Dodecanedioic acid 5~10% Monoethanolamine 20~25% Triethanolamine 35~40%; The percentage refers to the mass percentage in the water-based rust inhibitor; (20) In terms of mass fraction, the water-based cutting fluid comprises the following components: The water-based cutting fluid comprises the following ingredients: Lubricating and wetting agent: 10~30%; Water-based rust inhibitor: 20~30%; Water: balance; The percentage refers to the mass percentage in the water-based cutting fluid; (21) The water-based cutting fluid further comprises one or more of a coupling agent, a sedimentation agent, an antibacterial agent and an additive.

8. The water-based cutting fluid according to claim 7, characterized in that: The water-based cutting fluid meets one or more of the following conditions: (22) The coupling agent is selected from one or more of anhydrous ethanol, ethylene glycol, propylene glycol, polyethylene glycol, octanoic acid, isononanoic acid or neodecanoic acid, for example, any one or any two thereof, and for example, neodecanoic acid; (23) The mass fraction of the coupling agent is 1-3%, for example 2%, where the percentage refers to the mass fraction in the water-based cutting fluid; (24) The type of the sedimentation agent is selected from one or more of Guerbet alcohol-based glycoside triethylamine quaternary ammonium salt, cinnamyl alcohol-based glycoside triethylamine quaternary ammonium salt, coconut oil alcohol-based glycoside trimethylamine quaternary ammonium salt, trimethylamine quaternary ammonium salt polyacrylamide, poly(dichloroethyl ether tetramethylethylenediamine) or polyacrylic acid, for example, any one or any two thereof, and also for example, poly(dichloroethyl ether tetramethylethylenediamine); (25) The mass fraction of the sedimentation agent is 1-3%, for example 2%, where the percentage refers to the mass fraction in the water-based cutting fluid; (26) The type of antibacterial agent is selected from n-butylbenzisothiazolinone and / or benzisothiazolinone, such as n-butyl-benzisothiazolin-3-one; (27) The mass fraction of the antibacterial agent is 1 to 3%, for example 2%, where the percentage refers to the mass percentage in the water-based cutting fluid; (28) The additive is any one, any two or any three of an antioxidant, an antifungal agent and a defoaming agent, for example, the additive is a defoaming agent; The defoaming agent may be a substance containing dodecynediol, such as a dodecynediol solution, or a dipropylene glycol solution containing dodecynediol; The mass fraction of the additive may be 0-1.0%, for example 0.2%, where the percentage refers to the mass percentage in the water-based cutting fluid; Preferably, the water-based cutting fluid comprises the following components by mass fraction: The water-based cutting fluid comprises the following ingredients: Lubricating and wetting agent: 10~30%; Water-based rust inhibitor: 20~30%; Coupling agent: 0~5%; Sedimentation agent: 0~5%; Antimicrobial agent: 0~3%; Additives: 0~10%; Water: balance; The percentage refers to the mass percentage in the water-based cutting fluid.

9. Use of the allyl-containing block polyether as claimed in any one of claims 1 to 2 and 5 as a lubricating and wetting agent in the cutting of nepheline magnets.

10. A processing fluid, characterized in that: It comprises a water-based cutting fluid as described in any one of claims 6 to 8; The content of the water-based cutting fluid may be 1-50%, for example 10%, where the percentage refers to the mass percentage in the machining fluid.

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