CN112662489B - Resin lens cleaning agent and preparation method thereof - Google Patents
Resin lens cleaning agent and preparation method thereof Download PDFInfo
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Abstract
The main components of the conventional resin lens cleaning agent at present are volatile organic solvent and alkaline compound. The invention aims to provide an environment-friendly resin lens cleaning agent which does not contain volatile solvents and has lasting cleaning power and a preparation method thereof. The resin lens cleaning agent comprises the following components in parts by weight: 10-40 parts of polyethylene glycol dimethyl ether, 5-40 parts of organic alkali, 1-10 parts of laurocapram, 1-10 parts of cocoamine polyoxyethylene ether and 30-70 parts of water. According to the invention, laurocapram, polyethylene glycol dimethyl ether and coconut oil amine polyoxyethylene ether are innovatively combined to replace a conventional volatile organic solvent, so that the VOC content of the cleaning agent is remarkably reduced, and meanwhile, the cleaning agent still has a good cleaning effect and a long service life.
Description
Technical Field
The invention belongs to the technical field of chemical cleaning agents, relates to a cleaning agent, and particularly relates to an environment-friendly cleaning agent for cleaning resin lenses or grinding tools thereof and a preparation method thereof.
Background
The resin lens has the characteristics of small density, impact resistance, easiness in processing, excellent adhesion performance and the like, and is widely applied to glasses and optical lenses. During the production and processing of the resin lens, after molding and edging, uncured resin monomers, binders and ground solid powder are remained on the surface and need to be cleaned, and the resin monomers, the binders and the grinding residues are very firmly adhered to the surface of the resin lens or the grinding tool thereof after surface drying.
At present, alkaline water-based cleaning agents containing a large amount of volatile organic solvents are generally adopted in the market for ultrasonic cleaning under the condition of heating. Although the water-based cleaning agent for cleaning resin lenses has the characteristics of good cleaning effect, high cleaning speed and the like, the cleaning agent contains a large amount of volatile organic compounds, and the high-content organic solvent does not meet the content limit of the volatile organic compounds of the cleaning agent in GB 38508-2020. Meanwhile, the cleaning agent has the risks of flammability and explosiveness under the heating condition, the cleaning capacity of the cleaning agent is obviously reduced along with the volatilization of the organic solvent, and the service life of the cleaning agent is short.
Chinese patent CN 104745335 a discloses a resin lens cleaning agent and a preparation method thereof, the main components of which are N, N-Dimethylformamide (DMF), ethylenediamine, potassium dihydrogen phosphate-dipotassium hydrogen phosphate, sodium lauroamphoacetate and ethylene glycol. Such cleaning agents contain a large amount of VOC components such as DMF and diethylamine, and although the cleaning effect is good in a short period of time, the service life of the cleaning agent is shortened as the solvent is volatilized. Chinese patent CN 107118875 a discloses a cleaning agent for optical resin lens molds and a preparation method thereof, the main components of which are tetrahydrofuran, methanol, dimethyl carbonate, dibasic ester, sodium hydroxide and water. The cleaning agent also has the problems of excessive VOC and short service life.
Therefore, the search for an environment-friendly resin lens cleaning agent which does not contain volatile solvents and has long cleaning power is always a concern in the industry.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art to a certain extent, and aims to provide an environment-friendly resin lens cleaning agent which does not contain volatile solvents and has lasting cleaning power and a preparation method thereof, so that the defects in the prior art are overcome, and the cleaning agent is also suitable for cleaning the surfaces of grinding tools of resin lenses and other resin materials.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the resin lens cleaning agent comprises the following components in parts by weight:
the main components of the conventional resin lens cleaning agent at present are volatile organic solvent and alkaline compound. According to the invention, the combination of the laurocapram, the polyethylene glycol dimethyl ether and the cocoamine polyoxyethylene ether which are difficult to volatilize is innovatively adopted to replace the conventional volatile organic solvent, so that the VOC content of the cleaning agent is remarkably reduced, and meanwhile, the cleaning agent still has a good cleaning effect.
The laurocapram adopted in the resin lens cleaning agent is an oil-soluble substance, and the molecular structure of the laurocapram is provided with long-carbon-chain lauryl and azepanone, so that the laurocapram has high-efficiency permeation promotion performance on uncured resin monomers, can obviously soften the uncured resin monomers, and reduces the interactive viscosity of the uncured resin monomers. The solubility of laurocapram in the cleaning agent can be increased by adding the cocoamine polyoxyethylene ether, so that the purpose of solubilization is achieved. And meanwhile, the cocoamine polyoxyethylene ether has amino groups, so that the cocoamine polyoxyethylene ether can keep clear and compatible without layering in a high-concentration organic amine solution.
Preferably, the resin lens cleaning agent comprises the following components in parts by weight:
preferably, the structural formula of the polyethylene glycol dimethyl ether is CH3O(CH2CH2O)nCH3Wherein n is an integer of 4 to 8. By controlling the amount of polyoxyethylene, its volatility is significantly reduced while maintaining high solubility for the uncured monomer. In some embodiments of the invention, the boiling point of the employed polyglycol dimethyl ether is more than or equal to 250 ℃.
In some embodiments of the present invention, the organic base is selected from the group consisting of triethylene tetramine, tetraethylene pentamine, and combinations thereof. The triethylene tetramine and the tetraethylene pentamine adopted in the implementation of the invention are high-boiling point solvents, and the molecular structure of the triethylene tetramine and the tetraethylene pentamine contains a plurality of amido and imino groups, so that the alkali stability is maintained, and the volatilization amount is extremely low in the use process.
Preferably, the cocoamine polyoxyethylene ether has an EO number of 10 to 12.
The invention also provides a preparation method of the resin lens cleaning agent, which comprises the following steps:
mixing organic base, polyethylene glycol dimethyl ether and water, and stirring to obtain a mixed solution I;
mixing laurocapram and coconut oil amine polyoxyethylene ether, and stirring to obtain a mixed solution II;
and mixing the obtained mixed solution I and the obtained mixed solution II, and stirring to obtain the resin lens cleaning agent.
Preferably, the organic alkali, the polyethylene glycol dimethyl ether and the water are mixed and stirred, and the stirring speed is 40-60 r/min; stirring for 30-40min to obtain a first mixed solution.
Preferably, mixing laurocapram and cocoamine polyoxyethylene ether, and stirring at 40-60 r/min; stirring for 5-10min to obtain a mixed solution II.
Preferably, the obtained mixed solution I and the obtained mixed solution II are mixed and stirred, and the stirring speed is 40-60 r/min; stirring for 5-10min to obtain the resin lens cleaning agent.
Specifically, the preparation method of the resin lens cleaning agent comprises the following steps:
sequentially adding organic base, polyethylene glycol dimethyl ether and water in parts by weight into a reaction kettle, mixing, and stirring at the stirring speed of 40-60 revolutions per minute for 30-40min to obtain a mixed solution I;
sequentially adding laurocapram and cocoamine polyoxyethylene ether into another reaction kettle according to parts by weight, mixing, and stirring at the stirring speed of 40-60 r/min for 5-10min to obtain a mixed solution II;
and adding the mixed solution II into a reaction kettle filled with the mixed solution I, mixing and stirring at the stirring speed of 40-60 revolutions per minute for 5-10min to obtain the resin lens cleaning agent.
The invention has the beneficial effects that:
(1) compared with the conventional resin lens cleaning agent, which mainly comprises volatile organic solvent and alkaline substances, the resin lens cleaning agent disclosed by the invention innovatively adopts the combination of the difficult-to-volatilize laurocapram, the polyethylene glycol dimethyl ether and the cocoamine polyoxyethylene ether to replace the conventional volatile organic solvent, so that the VOC content of the cleaning agent is remarkably reduced, and meanwhile, the cleaning agent still has a good cleaning effect.
(2) The resin lens cleaned by the cleaning agent has no resin monomer, binder and dust residue, and the cleaning qualification rate is maintained at about 97%.
(3) Through test comparison, the resin lens cleaning agent provided by the invention does not use a conventional volatile organic solvent, so that the VOC content is remarkably reduced, the use frequency of the cleaning agent is remarkably increased, the service life of the cleaning agent is prolonged, and the resin lens cleaning agent has a very high practical application value.
Detailed Description
The invention will now be further illustrated by reference to specific examples, which are intended to be illustrative of the invention and are not intended to be a further limitation of the invention.
Example 1
The glass lens cleaning agent comprises the following components in parts by weight:
wherein the boiling point of the polyethylene glycol dimethyl ether is more than or equal to 250 ℃, and the contents of the four, five, six, seven and eight ethylene glycol dimethyl ethers are more than or equal to 98%.
The preparation method of the resin lens cleaning agent comprises the following steps:
(1) sequentially adding triethylene tetramine, polyethylene glycol dimethyl ether and water into a reaction kettle according to the weight, mixing, and stirring at the stirring speed of 50 revolutions per minute for 35 minutes to obtain a mixed solution I;
(2) adding laurocapram and cocoamine polyoxyethylene ether into another reaction kettle according to the weight, mixing, stirring, and stirring at a stirring speed of 50 revolutions per minute for 8 minutes to obtain a mixed solution II;
(3) and pouring the obtained mixed solution II into a reaction kettle filled with the mixed solution I, mixing, and stirring at the stirring speed of 50 revolutions per minute for 8 minutes to obtain the resin lens cleaning agent of the embodiment.
The resin lens cleaning agent obtained in the embodiment is used for carrying out cleaning effect test subsequently.
Example 2
The glass lens cleaning agent comprises the following components in parts by weight:
wherein the boiling point of the polyethylene glycol dimethyl ether is more than or equal to 250 ℃, and the contents of the four, five, six, seven and eight ethylene glycol dimethyl ethers are more than or equal to 98%.
The preparation method of the resin lens cleaning agent comprises the following steps:
(1) sequentially adding tetraethylenepentamine, polyethylene glycol dimethyl ether and water into a reaction kettle according to the weight, mixing and stirring at the stirring speed of 45 revolutions per minute for 38 minutes to obtain a mixed solution I;
(2) adding laurocapram and cocoamine polyoxyethylene ether into another reaction kettle according to the weight, mixing, stirring, and stirring at a stirring speed of 45 revolutions per minute for 9 minutes to obtain a mixed solution II;
(3) and pouring the obtained mixed solution II into a reaction kettle filled with the mixed solution I, mixing, and stirring at the stirring speed of 45 revolutions per minute for 9 minutes to obtain the resin lens cleaning agent of the embodiment.
The resin lens cleaning agent obtained in the embodiment is used for carrying out cleaning effect test subsequently.
Example 3
The glass lens cleaning agent comprises the following components in parts by weight:
wherein the boiling point of the polyethylene glycol dimethyl ether is more than or equal to 250 ℃, and the contents of the four, five, six, seven and eight ethylene glycol dimethyl ethers are more than or equal to 98 percent; the organic base is a composition with the mass ratio of triethylene tetramine to tetraethylenepentamine being 2: 3.
The preparation method of the resin lens cleaning agent comprises the following steps:
(1) sequentially adding organic base, polyethylene glycol dimethyl ether and water into a reaction kettle according to the weight, mixing, and stirring at the stirring speed of 55 revolutions per minute for 32 minutes to obtain a mixed solution I;
(2) adding laurocapram and cocoamine polyoxyethylene ether into another reaction kettle according to the weight, mixing, stirring, and stirring at the stirring speed of 55 revolutions per minute for 6 minutes to obtain a mixed solution II;
(3) and pouring the obtained mixed solution II into a reaction kettle filled with the mixed solution I, mixing, and stirring at the stirring speed of 55 revolutions per minute for 6 minutes to obtain the resin lens cleaning agent of the embodiment.
The resin lens cleaning agent obtained in the embodiment is used for carrying out cleaning effect test subsequently.
Comparative example 1
The comparative example is a cleaning agent in the prior art, and consists of the following components in parts by weight:
comparative example 1 the preparation method of the cleaning agent was as follows: 3kg of water was charged into a reaction vessel, and N, N-Dimethylformamide (DMF), potassium dihydrogen phosphate, dipotassium hydrogen phosphate, lauroamphoacetate ethylenediamine, the remaining water and ethylene glycol were added in this order in the above-mentioned weight at a stirring speed of 40 revolutions/min to obtain a cleaning agent of comparative example 1.
The cleaning agent obtained in comparative example 1 was used for subsequent cleaning effect tests.
Comparative example 2
The comparative example is a cleaning agent in the prior art, and consists of the following components in parts by weight:
comparative example 1 the preparation method of the cleaning agent was as follows: tetrahydrofuran, methanol, dimethyl carbonate (DMC), dibasic ester, and water were sequentially added to the reaction vessel at a stirring speed of 40 rpm, and after mixing, sodium hydroxide at a concentration of 5% was added to neutralize to pH 8.5, to obtain the cleaning agent of comparative example 2.
The cleaning agent obtained in comparative example 2 was used for subsequent cleaning effect tests.
Cleaning effect test example
The test method comprises the following steps: taking 50 resin lenses with resin monomers and dust adhered on the surfaces after grinding and polishing by using a hanger each time, putting the resin lenses into an ultrasonic cleaning machine with 5kg of cleaning agent, ultrasonically cleaning for 5min at 50 ℃, taking out the resin lenses, rinsing the resin lenses for 3 times by using pure water, putting the resin lenses into an oven at 120 ℃ for drying for 3min, and naturally cooling for 30min at room temperature. And observing whether the resin monomer and the dust are remained on the surface of the resin lens by using a magnifying lens, judging to be qualified if no residue exists, judging to be unqualified if obvious residue exists, and counting the qualified rate of cleaning every hanging. If the single-hanging qualification rate is higher than 94% (more than or equal to 47 lenses for each hanging), continuing to clean the next hanging until the single-hanging qualification rate is lower than 94% (less than 47 lenses for each hanging), and stopping cleaning. The total cleaning yield and the cleaning qualified hanging number are recorded, and the test result data is shown in table 1. The VOC test method refers to GB38508-2020 content limit of volatile organic compounds of cleaning agents.
Table 1 cleaning test results
| Examples and comparative examples | Total cleaning pass (%) | Number of qualified hanging pieces after cleaning | Volatility (VOC) |
| Example 1 | 97.6 | 56 | 0.21g/L |
| Example 2 | 97.5 | 52 | 0.18g/L |
| Example 3 | 97.8 | 53 | 0.16g/L |
| Comparative example 1 | 96.9 | 16 | 214.3g/L |
| Comparative example 2 | 97.2 | 13 | 744.8g/L |
As can be seen from Table 1, before the cleaning agent fails, the cleaning yield of the resin lens cleaning agent in the embodiments 1-3 and the cleaning yield of the resin lens cleaning agent in the comparative examples 1-2 can be maintained at about 97%, which shows that the resin lens cleaning agent in the embodiments of the present invention has a good cleaning effect on the pollution residues such as resin monomers, adhesives and dust while the VOC content of the cleaning agent is significantly reduced.
The cleaning pass hanging number of the cleaning of examples 1-3 is significantly more than that of comparative examples 1-2 under the condition of the same volume of the cleaning agent. Therefore, the resin lens cleaning agent disclosed by the embodiment of the invention can obviously increase the use times of the cleaning agent while keeping the cleaning capability, prolongs the service life of the cleaning agent and has high practical application value.
The above description is only an example of the present invention, and should not be taken as limiting the scope of the present invention. Insubstantial changes from the disclosed embodiments, variations from or substitutions to one or more other processes, or other insubstantial changes from the disclosed embodiments, as viewed in light of the above teachings, are intended to be covered by the present invention.
Claims (9)
1. The resin lens cleaning agent is characterized by comprising the following components in parts by weight:
10-40 parts of polyethylene glycol dimethyl ether,
5-40 parts of organic base, namely,
1-10 parts of laurocapram,
1-10 parts of cocoamine polyoxyethylene ether,
30-70 parts of water;
wherein the organic base is selected from triethylenetetramine, tetraethylenepentamine or combinations thereof.
2. The resin lens cleaning agent according to claim 1, which is characterized by comprising the following components in parts by weight:
20-35 parts of polyethylene glycol dimethyl ether,
10-30 parts of organic base, namely,
3-5 parts of laurocapram,
3-5 parts of cocoamine polyoxyethylene ether,
40-60 parts of water.
3. The resin lens cleaning agent according to any one of claims 1 to 2, wherein the polyethylene glycol dimethyl ether has a structural formula of CH3O(CH2CH2O)nCH3Wherein n is an integer of 4 to 8。
4. The resin lens cleaning agent according to claim 3, wherein the boiling point of the polyglycol dimethyl ether is not less than 250 ℃.
5. The resin lens cleaning agent according to any one of claims 1 to 2, wherein the cocoamine polyoxyethylene ether has an EO number of 10 to 12.
6. The method for producing a resin lens cleaning agent as defined in any one of claims 1 to 5, comprising the steps of:
mixing organic base, polyethylene glycol dimethyl ether and water, and stirring to obtain a mixed solution I;
mixing laurocapram and coconut oil amine polyoxyethylene ether, and stirring to obtain a mixed solution II;
and mixing the obtained mixed solution I and the obtained mixed solution II, and stirring to obtain the resin lens cleaning agent.
7. The preparation method according to claim 6, wherein the organic base, the polyethylene glycol dimethyl ether and the water are mixed and stirred at a speed of 40-60 rpm; stirring for 30-40min to obtain a first mixed solution.
8. The preparation method according to claim 6, wherein the laurocapram and the cocoamine polyoxyethylene ether are mixed and stirred at a speed of 40-60 rpm; stirring for 5-10min to obtain a mixed solution II.
9. The method according to claim 6, wherein the first and second mixed solutions are mixed and stirred at a speed of 40-60 rpm; stirring for 5-10min to obtain the resin lens cleaning agent.
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| CN114806261B (en) * | 2022-04-18 | 2023-04-11 | 广东红日星实业有限公司 | Deinking agent and preparation method and application thereof |
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| US5954891A (en) * | 1997-01-09 | 1999-09-21 | Kao Corporation | Detergent composition for removing resinous stains |
| US5962383A (en) * | 1997-09-29 | 1999-10-05 | Kyzen Corporation | Cleaning compositions and methods for cleaning resin and polymeric materials used in manufacture |
| CN101077995A (en) * | 2006-05-25 | 2007-11-28 | 日东电工株式会社 | Mold cleaning composition |
| CN104745335A (en) * | 2015-02-02 | 2015-07-01 | 江苏科技大学 | Resin lens cleaning agent and preparation method thereof |
| CN110343576A (en) * | 2019-07-25 | 2019-10-18 | 江苏全真光学科技股份有限公司 | A kind of mold mixed type cleaning agent of ultra-toughness resin lens |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5954891A (en) * | 1997-01-09 | 1999-09-21 | Kao Corporation | Detergent composition for removing resinous stains |
| US5962383A (en) * | 1997-09-29 | 1999-10-05 | Kyzen Corporation | Cleaning compositions and methods for cleaning resin and polymeric materials used in manufacture |
| CN101077995A (en) * | 2006-05-25 | 2007-11-28 | 日东电工株式会社 | Mold cleaning composition |
| CN104745335A (en) * | 2015-02-02 | 2015-07-01 | 江苏科技大学 | Resin lens cleaning agent and preparation method thereof |
| CN110343576A (en) * | 2019-07-25 | 2019-10-18 | 江苏全真光学科技股份有限公司 | A kind of mold mixed type cleaning agent of ultra-toughness resin lens |
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