阅读说明：本技术 镀膜光学玻璃用低voc水基型清洗剂 (Low-VOC water-based cleaning agent for coated optical glass ) 是由 陈成勋 种光耀 黄继承 于 2020-12-22 设计创作，主要内容包括：本发明揭示了一种镀膜光学玻璃用低VOC水基型清洗剂,所述清洗剂VOC≤100g/L,的组成(质量百分比)为,螯合剂5-15%,表面活性剂0.5-3%,有机碱0.5-3.5%,缓蚀剂2-5%,助洗剂5-20%,余量为去离子水。本发明的有益效果为：本发明有效的解决了镀膜光学玻璃对清洗后光学参数要求高的问题,规避了常规酸碱类玻璃清洗剂腐蚀膜层的困惑,也解决了常见的中性玻璃清洗剂的清洗能力不足的问题。(The invention discloses a low-VOC water-based cleaning agent for coated optical glass, which comprises, by mass, 5-15% of a chelating agent, 0.5-3% of a surfactant, 0.5-3.5% of an organic base, 2-5% of a corrosion inhibitor, 5-20% of a builder, and the balance deionized water, wherein the VOC is less than or equal to 100 g/L. The invention has the beneficial effects that: the invention effectively solves the problem that the coated optical glass has high requirement on the optical parameters after being cleaned, avoids the confusion that the conventional acid-base glass cleaning agent corrodes the film layer, and also solves the problem that the common neutral glass cleaning agent has insufficient cleaning capability.)

1. The low VOC water-based cleaning agent for coated optical glass is characterized in that: the cleaning agent VOC is less than or equal to 100g/L, and the cleaning agent VOC comprises, by mass, 5-15% of a chelating agent, 0.5-3% of a surfactant, 0.5-3.5% of an organic base, 2-5% of a corrosion inhibitor, 5-20% of a builder, and the balance deionized water.

2. The low-VOC water-based cleaning agent for coated optical glass according to claim 1, wherein: the cleaning agent comprises (by mass) chelating agent 6-12%, surfactant 0.8-3%, organic base 0.6-3%, corrosion inhibitor 2-4%, builder 5-18%, and deionized water in balance.

3. The low-VOC water-based cleaning agent for coated optical glass according to claim 1, wherein: the chelating agent is one or more of ethylenediamine tetraacetic acid, sodium gluconate, hydroxyethylidene diphosphonic acid and sodium pyrophosphate.

4. The low-VOC water-based cleaning agent for coated optical glass according to claim 1, wherein: the surfactant is one or the combination of more than one of alkylphenol polyoxyethylene, fatty alcohol polyoxyethylene ether sodium sulfate, alkyl sulfonate or linear alkylbenzene.

5. The low-VOC water-based cleaning agent for coated optical glass according to claim 1, wherein: the organic alkali is one or more of monoethanolamine, diethanolamine, triethanolamine and isopropanolamine.

6. The low-VOC water-based cleaning agent for coated optical glass according to claim 1, wherein: the corrosion inhibitor is one or the combination of more than one of EDTA-2 sodium, EDTA-4 sodium, sodium citrate and benzotriazole.

7. The low VOC, semi-aqueous base weight oil stain cleaner of claim 1, wherein: the builder is one or more of sodium citrate, sodium gluconate and sodium carbonate.

Technical Field

The invention relates to a cleaning agent, in particular to a low-VOC water-based cleaning agent for coated optical glass.

Background

In recent years, the anti-fingerprint capability of a camera is continuously improved, and the shooting effect of the camera is greatly improved, so that the improvement of the pixel value of a photosensitive element of the camera and the improvement of the imaging capability under a low illumination condition are benefited, but the effect of lens coating is not negligible. The camera coating can strengthen the perspective effect. Light is when the camera lens, and some light can produce the reflection in air and glass interface to lead to the unable whole photosensitive element that gets into of light, under general condition, the glass camera lens reflectivity of no coating film is about 5%, seems little, but not few cameras have adopted multilayer lens in order to promote the imaging effect, develop 7 layers from 5 layers, and the most has reached 10 layers of lenses now. The light that finally enters the photosensitive component may be left 50-60%. Meanwhile, after being reflected for many times by the lens, the light rays can be partially projected to other parts of the photosensitive element, so that the photos generate dazzling light or ghost images, and the imaging effect is seriously influenced.

In this case, the key to solving the reflection problem is a high-transmittance coating, which is generally uniformly coated on the lens by using a substance containing calcium fluoride as a main component and has a thickness of 1/4 required to pass through the light wave factory. Therefore, the reflection of light on two surfaces of the antireflection film is the same-frequency light with opposite phases, the reflected light disappears due to light interference, the reflectivity of the lens can be reduced to 1% or even lower through multilayer coating processing, and therefore the glare and ghost images can be reduced, meanwhile, the light penetrating power of the multilayer lens also reaches over 90%, the light utilization rate is greatly increased, and the imaging effect is guaranteed. The high-transmittance coating film is a new technical scheme in the field of optical cameras, the film layer is extremely thin and is not acid-base resistant, and if a common glass cleaning agent is adopted, the film layer is easy to elute, so that the optical yield is reduced greatly. With the release of national standards of GB38508-2020 'cleaning agent volatile organic compound limitation', the development of a low VOC cleaning agent for high-transmittance coated optical glass is urgently needed.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a low VOC water-based cleaning agent for coated optical glass.

The purpose of the invention is realized by the following technical scheme:

the low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 5-15% of a chelating agent, 0.5-3% of a surfactant, 0.5-3.5% of an organic base, 2-5% of a corrosion inhibitor, 5-20% of a builder, and the balance deionized water, wherein the VOC (volatile organic compound) of the cleaning agent is less than or equal to 100 g/L.

Preferably, the cleaning agent comprises, by mass, 6-12% of a chelating agent, 0.8-3% of a surfactant, 0.6-3% of an organic base, 2-4% of a corrosion inhibitor, 5-18% of a builder, and the balance deionized water.

Preferably, the chelating agent is one or more of ethylenediamine tetraacetic acid, sodium gluconate, hydroxyethylidene diphosphonic acid and sodium pyrophosphate.

Preferably, the surfactant is one or a combination of more than one of alkylphenol ethoxylates, fatty alcohol-polyoxyethylene ether sodium sulfate, alkyl sulfonates and linear alkyl benzene.

Preferably, the organic base is one or more of monoethanolamine, diethanolamine, triethanolamine and isopropanolamine.

Preferably, the corrosion inhibitor is one or the combination of more than one of EDTA-2 sodium, EDTA-4 sodium, sodium citrate and benzotriazole.

Preferably, the builder is one or more of sodium citrate, sodium gluconate and sodium carbonate.

The invention has the beneficial effects that: the invention effectively solves the problem that the coated optical glass has high requirement on the optical parameters after being cleaned, avoids the confusion that the conventional acid-base glass cleaning agent corrodes the film layer, and also solves the problem that the common neutral glass cleaning agent has insufficient cleaning capability.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in connection with the examples to facilitate understanding and understanding of the technical solutions of the present invention.

Example 1

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 5% of ethylenediamine tetraacetic acid, 3% of alkylphenol polyoxyethylene, 0.5% of diethanolamine, 5% of EDTA-2 sodium, 20% of sodium gluconate and the balance of deionized water.

Example 2

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 15% of sodium gluconate, 0.5% of fatty alcohol-polyoxyethylene ether sodium sulfate, 3% of triethanolamine, 2% of EDTA-2 sodium, 18% of sodium citrate and the balance of deionized water.

Example 3

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 7% of hydroxyethylidene diphosphonic acid, 1% of sodium alkylsulfonate, 1% of monoethanolamine, 3% of EDTA-2 sodium, 12% of sodium gluconate and the balance of deionized water.

Example 4

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 5% of ethylene diamine tetraacetic acid, 7% of sodium gluconate, 1.5% of alkylphenol ethoxylates, 0.5% of diethanolamine, 2% of triethanolamine, 1% of sodium citrate, 4% of benzotriazole, 14% of sodium gluconate and the balance of deionized water.

Example 5

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 11% of ethylene diamine tetraacetic acid, 2% of linear alkylbenzene, 2.5% of monoethanolamine, 1% of EDTA-2 sodium, 13% of sodium gluconate and the balance of deionized water.

Example 6

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 2% of ethylene diamine tetraacetic acid, 2% of sodium gluconate, 5% of hydroxyethylidene diphosphonic acid, 3% of alkylphenol polyoxyethylene, 2% of diethanolamine, 5% of EDTA-2 sodium, 10% of sodium gluconate and the balance of deionized water.

Example 7

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 5% of hydroxyethylidene diphosphonic acid, 8% of sodium pyrophosphate, 1% of alkylphenol polyoxyethylene, 0.5% of diethanolamine, 2% of triethanolamine, 3% of EDTA-2 sodium, 16% of sodium gluconate and the balance of deionized water.

Example 8

The low-VOC water-based cleaning agent for the coated optical glass comprises, by mass, 1% of fatty alcohol-polyoxyethylene ether sodium sulfate, 8% of disodium ethylene diamine tetraacetate, 1.5% of triethanolamine, 7% of sodium citrate, 4% of sodium gluconate and the balance of deionized water.

When the cleaning agent configured in the embodiment is used, the cleaning agent can be diluted by clear water for use according to requirements, namely, cleaning different products and dirt degrees.

The cleaning agents of examples 1 to 8 of the present invention were diluted and the oil stains were removed from the glass surfaces, and the results are shown in table 1:

table 1: cleaning effect test table for each embodiment

The invention has various embodiments, and all technical solutions formed by adopting equivalent transformation or equivalent transformation are within the protection scope of the invention.