CN101956199A - Non-phosphorus environment-friendly water-based degreasing agent and manufacturing method thereof - Google Patents

Abstract

The invention discloses a non-phosphorus environment-friendly water-based degreasing agent with good degreasing effect, easy cleaning and capability of meeting the requirements of back end of line process and a manufacturing method thereof, and the degreasing agent is water solution formed by mixing an A agent with a B agent, wherein the concentration of the A agent is 3-5%, and the concentration of the B agent is 1-3%; the A agent comprises the following raw materials by weight percent: 2-4% of sodium carbonate, 2-4% of sodium silicate pentahydrate, 2-4% of sodium citrate, 3-7% of sodium nitrite, 0.5-1% of nekal, 3-5% of triethanolamine, 0.1-0.3% of defoaming agent and the balance of tap water; and the B agent comprises the following raw materials by weight percent: 0.5-1.8% of potassium hydroxide, 4-6% of activating agent QYL-20, 1.5-3% of activating agent AEO-9, 0.5-1% of penetrating agent JFC, 0.8-1.5% of turkey red oil, 0.4-0.8% of defoaming agent and the balance of the tap water.

Description

Water base grease-removing agent of non-phosphate environment-friendly type and manufacture method

Technical field

The present invention relates to a kind of metal works surface grease-removing agent and manufacture method, especially a kind of degreasing effect is good, easy cleaning, can satisfy the water base grease-removing agent of non-phosphate environment-friendly type and the manufacture method of postchannel process requirement.

Background technology

Metal works make and use in because mechanical workout, antirust and load storing etc., it is basic ingredient and the oil product (greasy dirt) that is added with various organic additives or inorganic substance with mineral grease or animal-plant oil that its surface often contacts various.Therefore, in the metal works process of surface treatment, the important procedure that at first will implement is exactly necessary these greasy dirts (degreasing, oil removing), otherwise is difficult to guarantee the conversion film quality of later process, is difficult to guarantee that back road sprayed coating and metallic matrix have good bonding force.Chemical degreasing comprises and utilizes basic solution to greasy saponification in metal works surface and emulsifying effect, removes the saponifiability grease; Utilize the emulsifying effect of respective surfaces promoting agent to remove non-saponifiability grease.All need contain at least a basic salts that contain phosphate radical such as tertiary sodium phosphate, phosphatization sodium dihydrogen, tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 in the conventional chemical degreasing agent, these phosphoric acid salt not only solubleness are big, cleaning is good, and have the saponification and the emulsifying effect of suitable ability, also possess the effect of buffering pH value simultaneously.Because phosphoric acid salt can directly promote the microorganism in the water to breed in a large number, oxygen in the luxus consumption water, the discharging of phosphate radical and accumulation will produce the water quality of rivers,lakes and seas pollutes, influence the existence of organism in water and animal, destroy the eubiosis, the discharging of phosphorous refuse has been subjected to the restriction of environmental regulation for this reason.

Summary of the invention

The present invention is in order to solve the above-mentioned technical problem of existing in prior technology, provides that a kind of degreasing effect is good, easy cleaning, can satisfy the water base grease-removing agent of non-phosphate environment-friendly type and the manufacture method of postchannel process requirement.

Technical solution of the present invention is: the water base grease-removing agent of a kind of non-phosphate environment-friendly type, it is characterized in that the A agent and the B agent blended aqueous solution, and the concentration of A agent is 3～5%, the concentration of B agent is 1～3%;

The raw material of described A agent and mass percent are: yellow soda ash 2 ~ 4%, metasilicate pentahydrate sodium 2 ~ 4%, Trisodium Citrate 2 ~ 4%, Sodium Nitrite 3 ~ 7%, draw back powder 0.5 ~ 1%, trolamine 3 ~ 5%, defoamer 0.1 ~ 0.3 and tap water surplus;

The raw material of described B agent and mass percent are: potassium hydroxide 0.5 ~ 1.8%, promoting agent QYL-20 4 ~ 6%, promoting agent AEO-9 1.5 ~ 3%, penetrating agent JFC 0.5 ~ 1%, alizarin assistant 0.8 ~ 1.5%, defoamer 0.4 ~ 0.8% and tap water surplus.

The manufacture method of the water base grease-removing agent of a kind of above-mentioned non-phosphate environment-friendly type is characterized in that: described A agent is carried out as follows:

A. the tap water with metering is added in the reactor, is warmed to 40～50 ℃, starts agitator;

B. with calculated amount draw back powder, yellow soda ash, metasilicate pentahydrate sodium, Trisodium Citrate, Sodium Nitrite, join slowly successively in the reactor, whenever add and add a kind of raw material down again after a kind of raw material will stir abundant dissolving;

C. last defoamer and trolamine with calculated amount joins in the reactor, keeps the temperature in the reactor

Degree is 40～50 ℃, continues to stir 2～4h;

D. close agitator, be cooled to normal temperature;

Described B agent is carried out as follows:

E. the tap water with metering is added in the reactor, is warmed to 60 ~ 70 ℃, starts agitator;

F. potassium hydroxide and the defoamer with metering joins in the reactor, is stirred to abundant dissolving;

G. with promoting agent QYL-20, promoting agent AEO-9, the penetrating agent JFC of metering, alizarin assistant Xu successively

Xu joins in the reactor, whenever adds to add a kind of raw material down again after a kind of raw material will stir abundant dissolving;

H. keeping the temperature in the reactor is 60～70 ℃, continues to stir 3～4h;

I. close agitator, be cooled to normal temperature.

The present invention selects to replace phosphoric acid salt and has the basic salt of strong sequestering action and the water base grease-removing agent of non-phosphate environment-friendly type of design with the promoting agent combination of its coupling.Handle metal works with the present invention, can give full play to its emulsification function, reach the purpose of thorough degreasing, satisfied the pre-treatment specification of quality of later process (nano involucra processing and electrostatic powder coating application etc.).At preferred bases and basic salt as the saponifying agent composition simultaneously, guarantee that strong basicity content can be to various material surface generation oxidations and corrosive naturees such as steel, zinc, aluminium, the resultant that is attached on workpiece surface simultaneously after the saponification reaction easily dissolves, easy cleaning.

Embodiment:

The embodiment of the invention is that the concentration of A agent is 3～5% with the aqueous solution of A agent and B agent mixed preparing, and the concentration of B agent is 1～3%, has kept the solubleness and the transparency of water base grease-removing agent.

The raw material of described A agent and mass percent are: yellow soda ash 2 ~ 4%, metasilicate pentahydrate sodium 2 ~ 4%, Trisodium Citrate 2 ~ 4%, Sodium Nitrite 3 ~ 7%, draw back powder 0.5 ~ 1%, trolamine 3 ~ 5%, defoamer 0.1 ~ 0.3% and tap water surplus;

The raw material of described B agent and mass percent are: potassium hydroxide 0.5 ~ 1.8%, promoting agent QYL-20 4 ~ 6%, promoting agent AEO-9 1.5 ~ 3%, penetrating agent JFC 0.5 ~ 1%, alizarin assistant 0.8 ~ 1.5%, defoamer 0.4 ~ 0.8% and tap water surplus.

Concrete manufacture method:

Described A agent is carried out as follows:

A. the tap water with metering is added in the reactor, is warmed to 40～50 ℃, starts agitator;

That b. will measure draws back powder, yellow soda ash, metasilicate pentahydrate sodium, Trisodium Citrate, Sodium Nitrite, joins slowly successively in the reactor, whenever adds to add a kind of raw material down again after a kind of raw material will stir abundant dissolving;

C. at last defoamer and the trolamine that measures joined in the reactor, keep the temperature in the reactor

Degree is 40～50 ℃, continues to stir 2～4h;

D. close agitator, be cooled to normal temperature;

Described B agent is carried out as follows:

E. the tap water with metering is added in the reactor, is warmed to 60 ~ 70 ℃, starts agitator;

F. potassium hydroxide and the defoamer with metering joins in the reactor, is stirred to abundant dissolving;

G. with promoting agent QYL-20, promoting agent AEO-9, the penetrating agent JFC of metering, alizarin assistant Xu successively

Xu joins in the reactor, whenever adds to add a kind of raw material down again after a kind of raw material will stir abundant dissolving;

H. keeping the temperature in the reactor is 60～70 ℃, continues to stir 3～4h;

I. close agitator, be cooled to normal temperature.

The combination of Trisodium Citrate and Sodium Nitrite in the embodiment of the invention has very strong sequestering action, can prevent that workpiece surface from generating insoluble sclerosis soap-film; Promoting agent QYL-20 and AEO-9 guarantee hydrophilic interaction and hydrophobic effect simultaneously, even not selecting phosphoric acid salt for use, also can give full play to its emulsification function, reach the purpose of thorough degreasing.

The embodiment of the invention is used for the skimming treatment of metal works (cold-rolled steel sheet, heat zinc coating plate, electrolytic galvanized sheet, aluminium sheet etc.), and treatment temp is normal temperature～50 ℃, and spray pressure is MPa0.12～0.15, and the time is 1～3min, all reaches the degreasing effect of expection.Workpiece after the processing carries out testing after the later process, has satisfied the spray-coating layer five big technical indicator of iso standard regulation, i.e. a cross cut test, secondary cross cut test, salt-fog resistant test, tension weight churning test, drawing test.The embodiment of the invention is followed the tracks of through the scene of environmental administration and is detected, and reaches the first discharge standard of national environmental protection rules and regulations.

Claims (2)

1. the water base grease-removing agent of non-phosphate environment-friendly type is characterized in that the A agent and the B agent blended aqueous solution, and the concentration of A agent is 3～5%, and the concentration of B agent is 1～3%;

The raw material of described A agent and mass percent are: yellow soda ash 2～4%, metasilicate pentahydrate sodium 2～4%, Trisodium Citrate 2～4%, Sodium Nitrite 3～7%, draw back powder 0.5～1%, trolamine 3～5%, defoamer 0.1～0.3% and tap water surplus;

The raw material of described B agent and mass percent are: potassium hydroxide 0.5～1.8%, promoting agent QYL-20 4～6%, promoting agent AEO-9 1.5～3%, penetrating agent JFC 0.5～1%, alizarin assistant 0.8～1.5%, defoamer 0.4～0.8% and tap water surplus.

2. the manufacture method of the water base grease-removing agent of the described non-phosphate environment-friendly type of claim 1 is characterized in that:

Described A agent is carried out as follows:

A. the tap water with metering is added in the reactor, is warmed to 40～50 ℃, starts agitator;

That b. will measure draws back powder, yellow soda ash, metasilicate pentahydrate sodium, Trisodium Citrate, Sodium Nitrite, joins slowly successively in the reactor, whenever adds to add a kind of raw material down again after a kind of raw material will stir abundant dissolving;

C. at last defoamer and the trolamine that measures joined in the reactor, keeping the temperature in the reactor is 40～50 ℃, continues to stir 2～4h;

D. close agitator, be cooled to normal temperature;

Described B agent is carried out as follows:

E. the tap water with metering is added in the reactor, is warmed to 60～70 ℃, starts agitator;

F. potassium hydroxide and the defoamer with metering joins in the reactor, is stirred to abundant dissolving;

G. promoting agent QYL-20, promoting agent AEO-9, penetrating agent JFC, the alizarin assistant with metering joins in the reactor successively slowly, whenever adds to add a kind of raw material down again after a kind of raw material will stir abundant dissolving;

H. keeping the temperature in the reactor is 60～70 ℃, continues to stir 3～4h;

I. close agitator, be cooled to normal temperature.