Low-foam efficient optical glass honing liquid and preparation method thereof

Abstract

The invention relates to a low-foam efficient optical glass honing liquid which comprises 10-20% of a water-based antirust agent, 2-5% of a hard water resistant agent, 15-25% of an extreme pressure lubricant, 3-5% of a cleaning agent, 2-5% of a silicon powder settling agent, 0.5-1% of a polyether type defoaming agent, 5-10% of a base number storage agent and the balance of pure water. The invention also relates to a preparation method of the low-foam high-efficiency optical glass honing liquid, which comprises the following steps: mixing the pure water and the water-based antirust agent, heating and uniformly stirring to obtain a faint yellow transparent liquid, and cooling to room temperature; and adding an anti-hard water agent, an extreme pressure lubricant, a cleaning agent, a silicon powder settling agent, a polyether type defoaming agent and a base number storage agent into the cooled faint yellow transparent liquid while stirring, and continuously stirring to obtain the low-foam high-efficiency optical glass honing liquid. Compared with the prior art, the invention has the following beneficial effects: according to the technical scheme, by adding the low-foam and non-foam hard-resistant water agent, the problem of difficult foam elimination caused by soap precipitation due to too hard water quality of the optical glass liquid preparation is solved; by adding the special lubricant, the problem of low efficiency of the optical glass honing liquid is solved.

Description

Technical Field

[0001] The invention relates to the field of optical glass processing and manufacturing, and in particular to a low-foaming and high-efficiency optical glass honing liquid and a preparation method thereof. Background Art

[0002] As smartphones, tablets, digital cameras, LCD computers and smart displays become more and more popular in the market, the market demand for optical glass is also gradually increasing. Optical glass, an important component, is also gradually evolving towards intelligence, integration and ultra-precision. Different electronic products use different thicknesses and precisions, so the demand for optical glass is getting higher and higher.

[0003] In the process of optical glass processing, especially in the process of processing different thicknesses and precisions, it is common to use the upper and lower grinding discs to rotate counter to each other, use a mold to drive the optical glass material, and use optical glass grinding fluid or honing fluid to take away the grinding heat and the ground silicon powder or glass powder, so as to process the optical glass material to a certain thickness and precision. Generally, the thickness accuracy range is required to be ±4μm, and the shorter the time consumed by the disc film to process to the required thickness, the better.

[0004] Conventional optical glass honing fluids on the market currently have problems such as high foam and low efficiency. In order to solve one of the above problems, a low-foam and high-efficiency optical glass honing fluid is needed to meet the requirements of optical glass workpieces for precision and thickness, while improving production efficiency. Summary of the invention

[0005] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a low-foam and high-efficiency optical glass honing liquid and a preparation method thereof, so as to solve the problems of high foam and low efficiency currently existing in the existing optical glass honing liquid.

[0006] The present invention is to solve one of the above technical problems, and the technical scheme adopted is: a low-foam and high-efficiency optical glass honing liquid, comprising the following raw materials in percentages: 10-20% of water-based rust inhibitor, 2-5% of anti-hard water agent, 15-25% of extreme pressure lubricant, 3-5% of cleaning agent, 2-5% of silicon powder sedimentation agent, 0.5-1% of polyether defoaming agent, 5-10% of alkalinity reserve agent, and the balance is pure water.

[0007] Preferably, the preparation method of the water-based rust inhibitor is: reacting one or more of acylamino acid, azaphenyl ring polyaminocaproic acid, sebacic acid with triethanolamine, the reaction time is 120±10min, and the reaction temperature is 80-90°C.

[0008] Preferably, the anti-hard water agent is one or more of alcohol ether carboxylic acid, disodium ethylenediaminetetraacetate, and tetrasodium ethylenediaminetetraacetate.

[0009] Preferably, the extreme pressure lubricant is one or two of borate, tetraricinoleate, and polyether 1740, and the polyether 1740 is a trans-block polyether (ethylene oxide-propylene oxide copolymer).

[0010] Preferably, the cleaning agent is one or two of ethylene glycol, diethylene glycol, glycerol, and 1,3-propanediol. Preferably, the silica powder sedimentation agent is one or two of polysemicarbamide and polyacrylamide.

[0011] Preferably, the base number reserve agent is one or more of monoethanolamine, dimethylethanolamine, diethylaminoethanol, and multifunctional amine additives.

[0012] Preferably, the conductivity of pure water is ≤50 μS / cm.

[0013] The technical solution of the present invention also includes a preparation method of a low-foaming and high-efficiency optical glass honing fluid, which includes the following steps:

[0014] (1) Weigh the required raw materials in proportion;

[0015] (2) Mix pure water and the water-based rust inhibitor and heat and stir evenly to obtain a light yellow transparent liquid, and then cool it to room temperature for use as a coolant;

[0016] (3) Add the anti-hard water agent, extreme pressure lubricant, cleaning agent, silica powder sedimentation agent, polyether defoaming agent, and base number reserve agent to the coolant in step (2) while stirring, and continue stirring to obtain a low-foaming and high-efficiency optical glass honing fluid.

[0017] Preferably, a low-foaming and high-efficiency optical glass honing fluid includes the following raw materials by weight: 85 parts of pure water, 35 parts of triethanolamine, 10 parts of acyl amino acid, 10 parts of sebacic acid, 5 parts of tetrasodium ethylenediaminetetraacetate, 25 parts of tetraricinoleate, 15 parts of diethylene glycol, 5 parts of polysemicarbamide, 2 parts of polyether defoaming agent, and 10 parts of diethylaminoethanol.

[0018] Preferably, in step (2), pure water, triethanolamine, acyl amino acid, and sebacic acid are mixed and heated and stirred evenly to obtain a light yellow transparent liquid, and then cooled to room temperature for use as a coolant. The heating temperature is 80-90 °C, and the stirring time is 120 min.

[0019] Preferably, in step (3), add tetrasodium ethylenediaminetetraacetate, tetraricinoleate, diethylene glycol, polysemicarbamide, polyether defoaming agent, and diethylaminoethanol to the coolant in step (2) while stirring, and continue heating and stirring to obtain a low-foaming and high-efficiency optical glass honing fluid. The stirring temperature is 50 °C, and the stirring time is 1 hour.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] (1) The technical solution of the present invention solves the problem of difficulty in eliminating foam caused by soap precipitation due to the hard water quality of optical glass preparation liquid by adding a low-foam or non-foaming anti-hard water agent;

[0022] (2) The technical solution described in the present invention selects to use a high-viscosity, low-foam lubricant to improve the extreme pressure lubrication of the product system while increasing the viscosity of the system, taking away more grinding powder, and increasing the contact area between the disc and the optical glass material per unit time, thereby greatly increasing the disc grinding efficiency and solving the problem of low efficiency of optical glass honing fluid. DETAILED DESCRIPTION

[0023] The present invention is further described below by means of specific embodiments, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0024] Example 1: A low-foam, high-efficiency optical glass honing liquid, comprising, by weight, 80 parts of pure water, 40 parts of triethanolamine, 10 parts of azobenzene ring polyaminocaproic acid, 10 parts of sebacic acid, 4 parts of alcohol ether carboxylic acid, 30 parts of polyether 1740, 10 parts of ethylene glycol, 5 parts of polythiochloride, 2 parts of polyether defoamer, and 10 parts of dimethylethanolamine.

[0025] A method for preparing a low-foaming and high-efficiency optical glass honing liquid comprises the following steps:

[0026] (1) Weigh the required raw materials according to the proportion;

[0027] (2) Mix pure water, triethanolamine, azaphenyl ring polyaminocaproic acid, and sebacic acid, heat and stir evenly to obtain a light yellow transparent liquid, and then cool it to room temperature and use it as a coolant for standby use. The heating temperature is 80-90° C. and the stirring time is 120 min.

[0028] (3) Adding alcohol ether carboxylic acid, polyether 1740, ethylene glycol, polythiochloride, polyether defoamer, and dimethylethanolamine to the coolant in step (2) while stirring, and continuing to stir to obtain a low-foam, high-efficiency optical glass honing liquid, wherein the stirring temperature is room temperature and the stirring time is 1 hour.

[0029] Example 2: A low-foam, high-efficiency optical glass honing liquid, comprising, by weight, 85 parts of pure water, 35 parts of triethanolamine, 10 parts of acylamino acid, 10 parts of sebacic acid, 5 parts of tetrasodium ethylenediaminetetraacetic acid, 25 parts of tetrapolyricinoleate, 15 parts of diethylene glycol, 5 parts of polythiochloridone, 2 parts of polyether defoamer, and 10 parts of diethylaminoethanol.

[0030] A preparation method of a low-foam and high-efficiency optical glass honing fluid, comprising the following steps,

[0031] (1) Weigh the required raw materials in proportion;

[0032] (2) Mix pure water, triethanolamine, acyl amino acid, and sebacic acid, heat and stir evenly to obtain a light yellow transparent liquid, and then cool to room temperature for use as a coolant. The heating temperature is 80-90°C, and the stirring time is 120 min;

[0033] (3) Add sodium ethylenediaminetetraacetate, tetra-polyricinoleate, diethylene glycol, polysemicarbazide, polyether-type defoamer, and diethylaminoethanol to the coolant in step (2) while stirring, and continue heating and stirring to obtain a low-foam and high-efficiency optical glass honing fluid. The stirring temperature is 50°C, and the stirring time is 1 hour.

[0034] Example 3: A low-foam and high-efficiency optical glass honing fluid, by weight, comprises 85 parts of pure water, 30 parts of triethanolamine, 10 parts of azabenzene ring polyaminohexanoic acid, 10 parts of acyl amino acid, 4 parts of disodium ethylenediaminetetraacetate, 30 parts of polyether 1740, 10 parts of glycerol, 4 parts of polyacrylamide, 2 parts of polyether-type defoamer, and 15 parts of multifunctional amine additive.

[0035] A preparation method of a low-foam and high-efficiency optical glass honing fluid, comprising the following steps,

[0036] (1) Weigh the required raw materials in proportion;

[0037] (2) Mix pure water, triethanolamine, azabenzene ring polyaminohexanoic acid, and acyl amino acid, heat and stir evenly to obtain a light yellow transparent liquid, and then cool to room temperature for use as a coolant. The heating temperature is 80-90°C, and the stirring time is 120 min;

[0038] (3) Add disodium ethylenediaminetetraacetate, polyether 1740, glycerol, polyacrylamide, polyether-type defoamer, and multifunctional amine additive to the coolant in step (2) while stirring, and continue stirring to obtain a low-foam and high-efficiency optical glass honing fluid. The stirring temperature is room temperature, and the stirring time is 1 hour.

[0039] Example 4: A low-foam and high-efficiency optical glass honing fluid, by weight, comprises 85 parts of pure water, 30 parts of triethanolamine, 8 parts of azabenzene ring polyaminohexanoic acid, 8 parts of sebacic acid, 5 parts of alcohol ether carboxylic acid, 35 parts of borate, 10 parts of diethylene glycol, 5 parts of polyacrylamide, 2 parts of polyether-type defoamer, and 12 parts of monoethanolamine.

[0040] A preparation method of a low-foam and high-efficiency optical glass honing fluid, comprising the following steps,

[0041] (1) Weigh the required raw materials in proportion;

[0042] (2) Mix pure water, triethanolamine, azabenzene ring polyaminohexanoic acid, and sebacic acid, heat and stir evenly to obtain a light yellow transparent liquid, then cool it to room temperature for use as a coolant. The heating temperature is 80 - 90 °C, and the stirring time is 120 min;

[0043] (3) While stirring, add alcohol ether carboxylic acid, borate, diethylene glycol, polyacrylamide, polyether type defoamer, and monoethanolamine to the coolant in step (2), and continue stirring to obtain a low-foam and high-efficiency optical glass honing fluid. The stirring temperature is room temperature, and the stirring time is 1 hour.

[0044] Example 5: A low-foam and high-efficiency optical glass honing fluid, by weight, includes 80 parts of pure water, 50 parts of triethanolamine, 8 parts of azabenzene ring polyaminohexanoic acid, 8 parts of acyl amino acid, 4 parts of tetrasodium ethylenediaminetetraacetate, 25 parts of tetrapolyricinoleate, 10 parts of 1,3-propanediol, 5 parts of polysemicarbazide, 2 parts of polyether type defoamer, and 8 parts of dimethylethanolamine.

[0045] A preparation method of a low-foam and high-efficiency optical glass honing fluid includes the following steps:

[0046] (1) Weigh the required raw materials in proportion;

[0047] (2) Mix pure water, triethanolamine, azabenzene ring polyaminohexanoic acid, and acyl amino acid, heat and stir evenly to obtain a light yellow transparent liquid, then cool it to room temperature for use as a coolant. The heating temperature is 80 - 90 °C, and the stirring time is 120 min;

[0048] (3) While stirring, add tetrasodium ethylenediaminetetraacetate, tetrapolyricinoleate, 1,3-propanediol, polysemicarbazide, polyether type defoamer, and dimethylethanolamine to the coolant in step (2), and continue heating and stirring to obtain a low-foam and high-efficiency optical glass honing fluid. The stirring temperature is 50 °C, and the stirring time is 1 hour.

[0049] Performance test:

[0050] I. Test on the honing efficiency of optical glass

[0051] The low-foam and high-efficiency optical glass honing fluids obtained in Examples 1-5 were compared with the products currently used by the manufacturer, as follows: Tap water at 400 PPM was used, and working fluids were prepared at a ratio of 1:5. The fixed parameters of the circular grinding equipment were: pressure of 300 MPa; upper plate rotation speed of 30 r / min; lower plate rotation speed of 20 r / min; the initial thickness of the optical glass was 710 μm, and the final qualified thickness needed to be 644 ± 4 μm. Each product in the examples was tested 5 times, and the consumption time for each test was 40 s, 60 s, 90 s, 120 s, and 150 s. Ten identical optical glasses were placed for each test, and the average thickness was detected. The results are shown in Table 1.

[0052]

[0053] II. Comparison of foam and silicon powder deposition effects:

[0054] The low-foam and high-efficiency optical glass honing fluids obtained in Examples 1-5 were compared with the products currently used by the manufacturer, as follows: Prepared with tap water at 400 PPM, the low-foam and high-efficiency optical glass honing fluids obtained in Examples 1-5 and the comparative examples were prepared into working fluids at the same concentration ratio (stock solution: water = 1:5). 70 ml of the working fluid was introduced into a 100-ml stoppered graduated cylinder, and then 2 g of silicon powder was weighed into the stoppered graduated cylinder. The glass stopper was covered, and each stoppered graduated cylinder was shaken up and down 100 times (the shaking amplitude was ≥ 30 cm up and down). The clarification state and defoaming time of the working fluid, as well as the deposition height of the silicon powder, were observed at different time periods. The results are shown in Table 2.

[0055]

[0056]

[0057] In summary, from Table 1, it can be obtained that: in the test of the honing efficiency of optical glass, the test results of Example 2 and Example 5 are the best, those of Example 1 and Example 3 are the second, the test result of Example 4 is relatively poor, and the test efficiency of the currently used product is the worst.

[0058] From Table 2, it can be obtained that: in the comparison of foam and silicon powder deposition effects, the test result of Example 2 is the best; followed by Example 4; the performances of Example 1, Example 3, and Example 5 are the same, but they are all superior to those of the currently used product.

[0059] The low-foam and high-efficiency optical glass honing fluid prepared according to the raw material ratio and preparation method described in the present invention has good honing efficiency for optical glass and excellent performances in terms of foam and silicon powder deposition effects.

[0060] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

[0061] Matters not described in detail in the present invention are all well-known technologies to those skilled in the art.

Claims

1. A low-foam and highly efficient optical glass honing fluid, characterized in that, It includes the following raw materials in percentages: water-based rust inhibitor 10-20%, anti-hard water agent 2-5%, extreme pressure lubricant 15-25%, cleaning agent 3-5%, silica powder sedimentation agent 2-5%, polyether defoaming agent 0.5-1%, alkalinity reserve agent 5-10%, and the balance is pure water.

2. The low-foaming and highly efficient optical glass honing fluid according to claim 1, characterized in that, The preparation method of the water-based rust inhibitor is as follows: one or more of acylamino acid, azaphenyl ring polyaminocaproic acid, and sebacic acid are reacted with triethanolamine, the reaction time is 120±10min, and the reaction temperature is 80-90°C.

3. The low-foaming and highly efficient optical glass honing fluid according to claim 2, characterized in that, The anti-hard water agent is one or more of alcohol ether carboxylic acid, disodium ethylenediaminetetraacetate, and tetrasodium ethylenediaminetetraacetate.

4. The low-foaming and highly efficient optical glass honing fluid according to claim 3, wherein, The extreme pressure lubricant is one or two of borate, tetrapolyricinoleate, and polyether 1740.

5. A low-foam and high-efficiency optical glass honing fluid according to claim 4, characterized in that, The cleaning agent is one or two of ethylene glycol, diethylene glycol, glycerol and 1,3-propylene glycol.

6. The low-foaming and highly efficient optical glass honing fluid according to claim 5, characterized in that, The silicon powder sedimentation agent is one or both of polychlorinated amine and polyacrylamide.

7. The low-foaming and highly efficient optical glass honing fluid according to claim 6, wherein The base value reserve agent is one or more of monoethanolamine, dimethylethanolamine, diethylaminoethanol, and multifunctional amine auxiliary agents.

8. The low-foaming and highly efficient optical glass honing fluid according to claim 7, characterized in that, The conductivity of the pure water is ≤50 μS / cm.

9. The preparation method of a low-foaming and highly efficient optical glass honing fluid according to any one of claims 1-8, characterized in that, The following steps are included: (1) Weigh the required raw materials in proportion; (2) Mix pure water, triethanolamine, acylamino acid and sebacic acid, heat and stir evenly to obtain a light yellow transparent liquid, and then cool it to room temperature and use it as a coolant for standby use. The heating temperature is 80-90° C. and the stirring time is 120 min. (3) To the cooling liquid in step (2), add tetrasodium ethylenediaminetetraacetic acid, tetrapolyricinoleate, diethylene glycol, polythiocyanate, polyether defoamer, and diethylaminoethanol while stirring, and continue heating and stirring to obtain a low-foam, high-efficiency optical glass honing liquid. The stirring temperature is 50° C. and the stirring time is 1 hour.

10. The preparation method of a low-foaming and highly efficient optical glass honing fluid according to claim 9, characterized in that, The preparation method comprises the following raw materials in parts by weight: 85 parts of pure water, 35 parts of triethanolamine, 10 parts of acylamino acid, 10 parts of sebacic acid, 5 parts of tetrasodium ethylenediaminetetraacetic acid, 25 parts of tetrapolyricinoleate, 15 parts of diethylene glycol, 5 parts of polychlorinated amine, 2 parts of polyether defoamer and 10 parts of diethylaminoethanol.

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