CN114015517B

CN114015517B - Low-reflection glass cleaner for museum showcase and preparation method thereof

Info

Publication number: CN114015517B
Application number: CN202111410671.1A
Authority: CN
Inventors: 井长水; 萧树强; 苗克刚; 张玉堂; 王小俊
Original assignee: Beijing Bomingtang Glass Co ltd
Current assignee: Beijing Bomingtang Glass Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2024-04-05
Anticipated expiration: 2041-11-25
Also published as: CN114015517A

Abstract

The invention relates to a low-reflection glass cleaner for a museum showcase and a preparation method thereof. The low-reflection glass cleaner for the showcase of the museum is prepared by dissolving the defoaming agent in a solvent for the defoaming agent to prepare a defoaming agent solution, dissolving the antistatic agent in the solvent for the antistatic agent to prepare an antistatic agent solution, and uniformly mixing and dispersing the nonionic surfactant, the defoaming agent solution, the antistatic agent solution and water. The low-reflection glass cleaner for the museum showcase is used for cleaning low-reflection glass, has good cleaning effect and anti-fog and antistatic properties, ensures that the cleaned low-reflection glass can be kept clean for a long time, has good implementation effect and high application value, and is particularly suitable for being applied to the museum showcase.

Description

Low-reflection glass cleaner for museum showcase and preparation method thereof

Technical Field

The invention relates to a low-reflection glass cleaner for a museum showcase and a preparation method thereof, and belongs to the technical field of glass cleaners.

Background

The low-reflection glass for the showcase of the museum is magnetron sputtering coated glass, the surface of the magnetron sputtering coated glass is in a hydrophobic state, and the water contact angle is 60 degrees. Whereas the hydrophobic angle of the surface of the conventional ultra-white glass is about 30 degrees. The low reflection glass has a larger hydrophobic angle and the requirements for cleaning agents are more strict. The cleaning agent needs to fully infiltrate into the low-reflection glass film surface to achieve a better cleaning effect.

The existing common cleaning agent, such as glass cleaning agent in the electronic industry, comprises the following components: alkaline substances, polyalcohol, thickening agents, fluorine-containing surfactants, complexing agents, defoamers, deionized water and the like; the optical glass cleaning agent consists of a surfactant, a complexing agent, organic alkali, a penetrating agent and deionized water. The low-reflection glass is cleaned by adopting a glass cleaning agent in the electronic industry and an optical glass cleaning agent, and the glass cleaning agent has no anti-fog effect.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides a low-reflection glass cleaner for a showcase of a museum and a preparation method thereof, and the specific technical scheme is as follows:

the low-reflection glass cleaner for the showcase of the museum comprises the following components in percentage by weight:

the balance being water.

As improvement of the technical scheme, the nonionic surfactant is one or more of alkyl glycoside, polyoxyethylene nonionic surfactant, polyol nonionic surfactant, alkanolamide nonionic surfactant, polyether nonionic surfactant and amine oxide nonionic surfactant.

As improvement of the technical scheme, the defoaming agent is one or more of dimethyl polysiloxane, polydimethylsiloxane and polyether modified silicone oil.

As an improvement of the technical scheme, the solvent for the defoamer is one or more of alcohol, isopropanol and propanol.

As an improvement of the technical scheme, the antistatic agent is one or more of single fatty acid glyceride and ethoxylaurylamine.

As an improvement of the technical scheme, the solvent for the antistatic agent is one or more of glycol, ethanol and propanol.

The low-reflection glass cleaner for the museum showcase comprises the following components in percentage by weight:

the balance being water.

The preparation method of the low-reflection glass cleaner for the showcase of the museum comprises the following steps:

step one, dissolving an antifoaming agent (dimethyl polysiloxane) in an antifoaming agent solvent (isopropanol) to prepare an antifoaming agent solution;

step two, dissolving an antistatic agent (single fatty acid glyceride) in a solvent (ethylene glycol) for the antistatic agent to prepare an antistatic agent solution;

and thirdly, uniformly mixing and dispersing the nonionic surfactant (alkyl glycoside), the defoamer solution, the antistatic agent solution and the water to prepare the low-reflection glass cleaner for the showcase of the museum.

As an improvement of the technical scheme, the low-reflection glass cleaner for the museum showcase is applied to cleaning low-reflection coated glass.

The surfactant used in the invention is a nonionic surfactant, and the nonionic surfactant has better wetting, emulsifying, dispersing and solubilizing effects, does not ionize in water, and has good stability.

The nonionic surfactant used in the present invention is preferably an alkyl glycoside. The alkyl glycoside has low surface tension, no cloud point, adjustable HLB value, strong wetting power, strong detergency, strong compatibility, no toxicity, no harm, no stimulation to skin, rapid and thorough biodegradation, and obvious synergistic effect, and can be compounded with any type of surfactant. Has stronger broad-spectrum antibacterial activity, obvious thickening effect, easy dilution, no gel phenomenon and convenient use. And strong alkali resistance, strong acid resistance, hard water resistance and strong salt resistance. The use amount of the alkyl glycoside is increased, so that the wettability can be improved; however, as the content of alkyl glycoside increases, it was found in experiments that a significant amount of foam was produced in the finished product. Thus, the inclusion of an antifoaming agent in the formulation preferably employs dimethylpolysiloxane to reduce surface tension and inhibit foaming properties of the alkyl glycoside. When the mass ratio between the alkyl glycoside and the dimethylpolysiloxane is 2:1, both the wettability by the alkyl glycoside and the foam suppressing effect can be optimized. When the content of the alkyl glycoside was 1%, the content of the dimethylpolysiloxane was 0.5%.

In addition, it has been found in experiments that alkyl glycoside not only can increase wettability, but also can make the low-reflection glass cleaned by the cleaner (the low-reflection glass cleaner for museum showcase for short) have anti-fog performance.

Since dimethylpolysiloxane is insoluble in water, conventional cleaners typically dissolve dimethylpolysiloxane in alcohol and then in the cleaning agent. According to the invention, by dissolving the dimethylpolysiloxane in the isopropanol, the isopropanol not only can increase the dissolution performance, but also can be matched with the alkyl glycoside to jointly increase the antifogging performance. The optimal proportion of the alkyl glycoside, the dimethylpolysiloxane and the isopropanol is 2:1:16, and the antifogging property is optimal.

In order to increase the antistatic performance of the detergent, the invention achieves the antistatic effect by dissolving the mono-fatty glyceride (MG) in ethylene glycol.

Are well known in the art: the top layer of low reflection coated glass is typically titanium oxide. The introduction of ethylene glycol can further enhance the antistatic effect due to the excessive amount of ethylene glycol in addition to the use as a solvent. The optimal mass ratio of the fatty acid monoglyceride to the glycol is 1:3.

The invention has the beneficial effects that:

the low-reflection glass cleaner for the museum showcase is used for cleaning low-reflection glass, has a good cleaning effect and a certain anti-fog effect, and meanwhile, the cleaned low-reflection glass has a certain antistatic property, so that the cleaned low-reflection glass can be kept clean for a long time (such as 48 hours), the implementation effect is good, the application value is high, and the low-reflection glass cleaner is particularly suitable for being applied to the museum showcase.

Drawings

Fig. 1 is a graph of isopropanol content y versus fogging time t.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

Step one, dissolving 0.5kg of dimethyl polysiloxane in 5kg of alcohol to prepare an antifoaming agent solution;

step two, 0.5kg of fatty acid monoglyceride is dissolved in 1.5kg of glycol to prepare antistatic agent solution;

and thirdly, mixing and stirring 1kg of alkyl glycoside, a defoamer solution, an antistatic agent solution and 91.5kg of water for 2-3 hours to obtain a sample 1.

Example 2

Step one, dissolving 0.5kg of dimethyl polysiloxane in 5kg of isopropanol to prepare an antifoaming agent solution;

and thirdly, mixing and stirring 1kg of alkyl glycoside, a defoamer solution, an antistatic agent solution and 91.5kg of water for 2-3 hours to obtain a sample 2.

Example 3

Step one, dissolving 0.5kg of dimethyl polysiloxane in 8kg of isopropanol to prepare an antifoaming agent solution;

and thirdly, mixing and stirring 1kg of alkyl glycoside, a defoamer solution, an antistatic agent solution and 88.5kg of water for 2-3 hours to obtain a sample 3.

1. Initial anti-fog effect test:

1.1 treatment of glass patterns to be measured

And cleaning the surface of the low-reflection glass by using an ultrasonic cleaner, and putting the low-reflection glass into an oven at 80 ℃ for 60 minutes for drying treatment to clean and dry the surface of the glass. Samples 1-3 were then used to clean the glass patterns to be tested, respectively. And after cleaning, carrying out an initial anti-fog test on the glass pattern to be tested.

And fixing the glass pattern to be measured at a position 10cm away from the steam outlet, and opening a switch of the electric heating steam machine to blow hot steam to the surface of the glass. The glass surface fogging time was observed to compare the initial anti-fogging properties of the test pieces, and the results are shown in table 1.

TABLE 1

2. Long-term anti-fog effect test

2.1 treatment of glass patterns to be measured

And cleaning the surface of the low-reflection glass by using an ultrasonic cleaner, and putting the low-reflection glass into an oven at 80 ℃ for 60 minutes for drying treatment to clean and dry the surface of the glass. Samples 1-3 were then used to clean the glass patterns to be tested, respectively. After cleaning, the glass patterns to be tested are respectively placed for 1 hour, 2 hours and 3 hours under the same natural environment, and then fog forming test is carried out.

2.2 fogging test method

The glass pattern to be measured placed in the natural environment is fixed at a position 10cm away from a steam outlet, and a switch of an electric heating steam machine is turned on to blow hot steam to the surface of the glass. The glass surface fogging time was observed to compare the initial anti-fogging properties of the test pieces, and the results are shown in Table 2.

TABLE 2

3. Antistatic effect experiment

3.1, dust adsorption experiment without detergent:

cleaning low-reflection glass by using an ultrasonic cleaner, wiping the surface of the low-reflection glass by using dry dust-free cloth, drying the sample at 30 ℃ for 10 hours under a constant-temperature drying oven, horizontally placing the sample in an environment with the humidity of 30% and 80% at 25 ℃, and observing the dust adsorbed on the surface of the glass after placing for 24 hours, 48 hours and 72 hours.

3.2, dust adsorption experiments with cleaners (e.g. samples 1-3):

cleaning the glass surface by using samples 1-3, wiping the surface by using dry dust-free cloth, drying the sample at 30 ℃ for 10 hours under a constant temperature drying oven, horizontally placing the sample in an environment with the humidity of 30% and 80% at 25 ℃, and observing the dust adsorbed on the glass surface after placing for 24 hours, 48 hours and 72 hours.

3.3, comparative characterization of dust adsorption:

microscopic image analysis systems were used to characterize the dust-laden glass surface. The particle size and the number of dust adhered to the glass surface are analyzed by an image analysis system, the dust adsorption condition of the glass surface treated differently can be characterized, and the results are shown in Table 3.

TABLE 3 Table 3

In the above examples, according to examples 1 to 3 and the initial antifogging effect test, the long-term antifogging effect test, the antistatic effect test, it was found that:

besides the increased wettability, the alkyl glycoside also enables the low-reflection glass cleaned by the cleaning agent (the low-reflection glass cleaning agent for museum showcases for short) to have anti-fog performance, and the initial anti-fog effect and the long-term anti-fog effect are excellent.

As can be seen from comparative analysis of examples 1 and 2 and examples 1 and 3, the anti-fog performance enhanced with isopropanol was significantly better than with alcohol.

The mass ratio of the alkyl glycoside, the dimethylpolysiloxane and the isopropanol is continuously adjusted to be 1:0.5:y. Samples X1 to 10 were tested for their misting time t according to the initial misting effect test, based on the y values, corresponding samples 1 to 3 and samples X1 to 10 prepared according to the formulation of Table 4.

TABLE 4 Table 4

The graph of the isopropanol content y versus the fogging time t is shown in fig. 1, and it can be seen from fig. 1 that y is equal to 8 or 9.5 when t has a maximum value; therefore, when y is preferably equal to 8, that is, the optimal ratio of alkyl glycoside, dimethylpolysiloxane and isopropanol is 2:1:16, the antifogging property is optimal.

The single fatty acid glyceride is replaced by the polyglycerol fatty acid ester and the sorbitan fatty acid ester of the antistatic agent, but the polyglycerol fatty acid ester and the sorbitan fatty acid ester do not cause the low-reflection coated glass to have antistatic effect (the number of dust particles with the particle size of 0.8um on the surface of the glass exceeds 50 after being placed for 24 hours).

An antistatic effect experiment was performed using the ultra-white glass cleaned by sample 3, and the number of dust having a particle size of 0.5um or more was more than 50 on the surface of the glass after 24 hours of standing at 25℃and 30% RH.

The number and particle size of dust on the glass surface after being left for 72 hours at 25℃and 30% RH were measured by continuously adjusting the content of ethylene glycol according to the respective samples Z1 to 8 prepared according to the formulation of Table 5 (wherein, the dissolution of the fatty acid monoglyceride may be performed by heating water or alcohol to 70 ℃) and performing an antistatic effect test on the low reflection glass after cleaning using the samples Z1 to 8, and the results are shown in Table 6.

TABLE 5

Component (%)	Sample Z1	Sample Z2	Sample Z3	Sample Z4	Sample Z5	Sample Z6	Sample 3	Sample Z7	Sample Z8
										Isopropyl alcohol	8	8	8	8	8	8	8	8	8
Dimethyl polysiloxane	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
										Alkyl glycoside	1	1	1	1	1	1	1	1	1
Monoglyceride of fatty acid	0	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
										Ethylene glycol	2	0	0.1	0.3	0.5	1	1.5	2	3
Deionized water	88.5	90	89.9	89.7	89.5	89	88.5	88	87

TABLE 6

From tables 5 and 6, it can be seen that: the antistatic effect can be improved by adding the fatty acid monoglyceride into the cleaning agent, and the antistatic effect can be further improved by adding the excessive glycol; while Shan Jiayi glycol does not have an antistatic effect. After the content of ethylene glycol is raised to a certain extent, the antistatic effect reaches a limit. Thus, the optimal mass ratio of mono fatty acid glyceride to ethylene glycol is 1:3.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The low-reflection glass cleaner for the showcase of the museum is characterized by comprising the following components in percentage by weight:

1-2% of a nonionic surfactant;

0.5-1% of defoaming agent;

5-8% of a solvent for the defoamer;

0.5-1% of antistatic agent;

1.5-2% of a solvent for an antistatic agent;

the balance being water;

the nonionic surfactant is alkyl glycoside, and the defoaming agent is one or more of dimethyl polysiloxane, polydimethylsiloxane and polyether modified silicone oil; the solvent for the defoaming agent is one or more of alcohol and isopropanol;

the antistatic agent is mono fatty acid glyceride, and the solvent for the antistatic agent is ethylene glycol.

2. The low-reflection glass cleaner for museum showcases according to claim 1, which is characterized by comprising the following components in percentage by weight:

0.5% of dimethylpolysiloxane;

alkyl glycoside 1%;

0.5% of a fatty acid monoglyceride;

8% of isopropanol;

ethylene glycol 1.5%;

the balance being water.

3. The method for preparing the low-reflection glass cleaner for the showcase of the museum according to any one of claims 1 to 2, which is characterized by comprising the following steps:

step one, dissolving an antifoaming agent in a solvent for the antifoaming agent to prepare an antifoaming agent solution;

step two, dissolving an antistatic agent in a solvent for the antistatic agent to prepare an antistatic agent solution;

and thirdly, uniformly mixing and dispersing the nonionic surfactant, the defoamer solution, the antistatic agent solution and the water to prepare the low-reflection glass cleaner for the showcase of the museum.

4. Use of a low reflection glass cleaner for museum showcases according to any one of claims 1-2 for cleaning low reflection coated glass.