CN103881843A

CN103881843A - Glass substrate cleaning agent

Info

Publication number: CN103881843A
Application number: CN201410105790.XA
Authority: CN
Inventors: 孙德庆
Original assignee: SHANGHAI COMFORT BIOCHEMICAL Co Ltd
Current assignee: SHANGHAI COMFORT BIOCHEMICAL Co Ltd
Priority date: 2014-03-20
Filing date: 2014-03-20
Publication date: 2014-06-25

Abstract

The invention discloses a glass substrate cleaning agent. The glass substrate cleaning agent is prepared from the following ingredients in percentage by weight: 4-20% of inorganic alkaline substance, 1-10% of nonionic surfactant, 0.1-5% of organosilicon dispersant, 0.05-1% of fluorocarbon surfactant, 1-5% of metal ion chelating agent and the balance of deionized water. The cleaning agent disclosed by the invention is free from peculiar smell, toxicity, corrosiveness and organic volatiles and is not combustible and not explosive, the raw materials are easily obtained, the preparation is simple, and the use is convenient; the cleaning agent is suitable for cleaning various liquid-crystal glass substrates, and the cleaning effect is relatively good; the cleaning agent is particularly suitable for cleaning touch-screen glass substrates.

Description

A kind of glass substrate cleaning agent

Technical field

The present invention relates to a kind of clean-out system, be specifically related to a kind of glass substrate cleaning agent.

Background technology

Glass substrate is the vitals of liquid crystal display device, and the particulate matter that has fingerprint, dust, greasy dirt and other organic or inorganic before plated film is attached to surface, and these impurity can affect the quality of glass substrate, so that reduces the qualification rate of liquid crystal display device.Existing glass substrate cleaning agent mainly comprises two kinds of aqueous cleaning agent and solution clean-out systems, because solvent cleaner is serious to environmental disruption, aqueous cleaning agent is the clean-out system of main flow now.

CN101250465 discloses a kind of electro-conductive glass substrate cleaning agent, it is made up of the component of following weight percent: sodium bicarbonate 3～5%, tripoly phosphate sodium STPP 3～5%, monoethanolamine 2～4%, Virahol 5～10%, fatty alcohol-polyoxyethylene ether 0.2～0.4%, Sodium dodecylbenzene sulfonate 0.1～0.5%, butyl glycol ether 2～5%, all the other are water.This clean-out system contains more organic solvent, can cause certain environmental pollution.

Publication number is that CN103045391A discloses a kind of glass substrate water-base cleaning liquid, by weight percentage, comprise following component: inorganic base substance 1～5%, anion surfactant 5～15%, nonionogenic tenside 5～10%, defoamer 0.1～1%, all the other are water.The disclosed scavenging solution of this patent, containing NP and OP class tensio-active agent, have fewer environmental impacts, but scrubbing effect is not good enough.

Summary of the invention

The invention provides a kind of glass substrate cleaning agent, to solve the not good enough problem of existing clean-out system scrubbing effect.

A kind of glass substrate cleaning agent, by weight percentage, composed of the following components:

Described inorganic base substance is made up of potassium hydroxide and inorganic potassium salt, and wherein sodium hydroxide accounts for the 1-10% of clean-out system, and inorganic potassium salt accounts for the 3-10% of clean-out system,, more there is choosing, the weight percent of described inorganic base substance is 12-20%.

Described sylvite is one or more in potassium silicate, potassium metasilicate, salt of wormwood and saleratus, and above-mentioned sylvite is soluble in water, can keep the certain alkalescence of clean-out system, has good shock-absorbing capacity, can effectively dissolve the greasy dirt of glass surface, strengthens cleaning performance.Because containing potassium ion, can not cause glass substrate strength degradation.

Described nonionogenic tenside is the tensio-active agent that contains fatty alcohol and polyoxyethylene segment, and its general formula is: RO (CH ₂cH ₂o) _mh, wherein R is that carbonatoms is the alkyl of 6-20, the integer that m is 4-50, Emulsifier MOA-9 etc. that produce as Hai'an, Jiangsu petroleum chemical plant.This kind of tensio-active agent contains a large amount of Soxylat A 25-7 segments, good water solubility, there is effect wetting and infiltration simultaneously, adsorbable on interface, can significantly reduce the surface tension of scavenging solution, thereby under the effect of the factors such as hydrodynamic force, cause rupture of oil film to become tiny pearl, depart from metallic surface, enter into solution and form emulsion, by remain in glass surface particle hold up and by its removal.More have choosing, described nonionogenic tenside weight percent consists of 4-10%.

The general formula of described organosilicon dispersion agent is:

Wherein, the integer that n is 4-30, as SILWET L-77 etc.This organosilicon dispersion agent has lower surface tension and good dispersion, penetrating quality, its molecular structure feature makes it be easy to align on material surface or two-phase interface, reduce interfacial tension, can rapid osmotic arrive between pollutent and glass substrate, play the effect that helps cleaning, more have choosing, the weight percent of described organosilicon dispersion agent is 1-5%.

Described fluorocarbon surfactant is perfluoro hexyl potassium sulfonate, perfluoro hexyl potassium sulfonate has high surfactivity and extremely low critical surface tension, can be under lower consumption the surface tension of fast reducing clean-out system, strengthen the cleaning performance to organic pollutant, do not contain PFOS and PFOA, have consumption few, eco-friendly feature, can also give the function of the certain antistatic and oil resistant dirt of glass substrate after cleaning; Preferred, described perfluoro hexyl potassium sulfonate weight percent is 0.2-0.4%.

Described metal ion chelation agent is polyacrylic acid potassium.Polyacrylic acid potassium is the each metal ion species of complexing glass baseplate surface efficiently, as Ca ²⁺, Mg ²⁺, Fe ²⁺, Cu ²⁺, Zn ²⁺deng metal ion, chelating efficiency is high, also has the auxiliary effect of soaping simultaneously, liquid crystal glass base is dissolved to stripping performance strong, has overcome the water pollution issue that small molecules sequestrant causes.Molecular weight is preferably 10-50 ten thousand, and weight percent is preferably 2-4%.

Clean-out system free from extraneous odour of the present invention, nontoxic non-corrosiveness, without organic volatile, nonflammable explosive, raw material is easy to get, and configuration is simple, easy to use, is applicable to the cleaning of various liquid crystal glass bases, and cleaning performance is better, is especially applicable to the cleaning of touch-screen glass substrate.

Embodiment

Press the proportioning shown in table 1 each raw material is mixed, stir, raw material dissolves obtain as clear as crystal solution completely, is clean-out system.

Table 1

Sequence number

Component

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

1

Potassium hydroxide

5kg

4kg

3kg

2kg

1kg

4kg

3kg

2

Salt of wormwood

1kg

2kg

3kg

1kg

2kg

3kg

2kg

3

Saleratus

1kg

2kg

3kg

4kg

5kg

2kg

5kg

4

Nonionogenic tenside

4kg

3kg

2kg

5kg

4kg

2kg

3kg

5

Organosilicon dispersion agent

0.5kg

1kg

1.5kg

2.0kg

2.5kg

1.5kg

0.5kg

6

Perfluoro hexyl potassium sulfonate

0.1kg

0.2kg

0.1kg

0.2kg

0.1kg

0.2kg

0.1kg

7

Polyacrylic acid potassium

1kg

2kg

1kg

2kg

1kg

2kg

1kg

8

Deionized water

37.4kg

35.8kg

36.4kg

33.8kg

34.4kg

35.3kg

35.4kg

Example 1

No. 4 raw material nonionogenic tensides are fatty alcohol-polyoxyethylene ether, and structural formula is RO (CH ₂cH ₂o) _mh, R is nonyl, m=9.

No. 5 raw material mix formula is as follows, wherein n=8.

Polyacrylic acid potassium molecular weight 200,000.

Example 2

No. 4 raw material mix formulas are with example 1, and R is octyl group, m=15.

No. 5 raw material mix formulas are with example 1, n=6.

Polyacrylic acid potassium molecular weight 100,000.

Example 3

No. 4 raw material mix formulas are with example 1, and R is octadecyl, m=50.

No. 5 raw material mix formulas are with example 1, n=20.

Polyacrylic acid potassium molecular weight 300,000.

Example 4

No. 4 raw material mix formulas are with example 1, and R is dodecyl, m=30.

No. 5 raw material mix formulas are with example 1, n=12.

Polyacrylic acid potassium molecular weight 500,000.

Example 5

No. 4 raw material mix formulas are with example 1, and R is nonyl, m=20.

No. 5 raw material mix formulas are with example 1, n=15.

Polyacrylic acid potassium molecular weight 300,000.

Example 6

No. 4 raw material mix formulas are with example 1, and R is octyl group, m=12.

No. 5 raw material mix formulas are with example 1, n=6.

Polyacrylic acid potassium molecular weight 200,000.

Example 7

No. 4 raw material mix formulas are with example 1, and R is octyl group, m=9.

No. 5 raw material mix formulas are with example 1, n=12.

Polyacrylic acid potassium molecular weight 300,000.

Application examples

First clean-out system is diluted with the ratio of 5:95 with deionized water, get the glass substrate with finger mark, mimeograph and watermark to be cleaned, with the clean-out system spray washing after dilution, then with clear water spray, detect the surface of glass substrate.The glass substrate that utilizes clean-out system shown in embodiment 1-7 to clean, cleans rear surface luminance brightness situation, and water wave situation and glass surface degree of impairment are as shown in table 2 below.

Table 2

Clean-out system	Luminance brightness situation	Water wave situation	Degree of impairment
				Example 1	5	5	5
Example 2	5	5	5
				Example 3	5	5	5
Example 4	5	4	5
				Example 5	4	5	5
Example 6	5	5	5
				Example 7	5	4	5

Luminance brightness situation: 5 very bright, 4 lights, 3 brighter, 2 general lights, 1 brightless

Water wave situation: 5 without water wave, 4 minute quantity water waves, 3 a small amount of water waves, 2 more water waves, 1 a lot of water waves

Degree of impairment: 5 not damaged points, 4 minute quantity impaired locis, 3 a small amount of impaired locis, 2 more impaired locis, 1 a lot of impaired locis.

Claims

1. a glass substrate cleaning agent, by weight percentage, composed of the following components:

2. glass substrate cleaning agent as claimed in claim 1, is characterized in that, described inorganic base substance is made up of potassium hydroxide and inorganic potassium salt, and wherein potassium hydroxide accounts for the 1-10% of clean-out system, and inorganic potassium salt accounts for the 3-10% of clean-out system.

3. glass substrate cleaning agent as claimed in claim 1, is characterized in that, described sylvite is one or more in potassium silicate, potassium metasilicate, salt of wormwood and saleratus.

4. glass substrate cleaning agent as claimed in claim 1, is characterized in that, described nonionogenic tenside is the tensio-active agent that contains fatty alcohol and polyoxyethylene segment, and its general formula is: RO (CH ₂cH ₂o) _mh, wherein R is that carbonatoms is the alkyl of 6-20, the integer that m is 4-50.

5. glass substrate cleaning agent as claimed in claim 1, is characterized in that, the general formula of described organosilicon dispersion agent is:

Wherein, the integer that n is 4-30.

6. glass substrate cleaning agent as claimed in claim 5, is characterized in that, the weight percent of described organosilicon dispersion agent is 1-5%.

7. glass substrate cleaning agent as claimed in claim 1, is characterized in that, described fluorocarbon surfactant is perfluoro hexyl potassium sulfonate.

8. glass substrate cleaning agent as claimed in claim 7, is characterized in that, the weight percent of described fluorocarbon surfactant is 0.2-0.4%.

9. glass substrate cleaning agent as claimed in claim 1, is characterized in that, described metal ion chelation agent is polyacrylic acid potassium.

10. glass substrate cleaning agent as claimed in claim 1, is characterized in that, the molecular weight of described polyacrylic acid potassium is 4-50 ten thousand.