阅读说明：本技术 一种无磷水基除胶脱脂剂 (Non-phosphorus water-based degumming and degreasing agent ) 是由 徐旭 田冰 付海罗 聂晓霖 于 2021-07-15 设计创作，主要内容包括：本发明公开了一种无磷水基除胶脱脂剂,由A剂和B剂按质量比3～5：1～1.5复合而成；其中,A剂由如下质量百分比的组分配制而成：10～18％氢氧化钾、1～7％pH值稳定剂、1～2％螯合剂以及余量水；B剂由如下质量百分比的组分配制而成：0～5％增溶剂、5～15％表面活性剂、0.5～2％消泡剂、12～15％有机溶剂以及余量水。本发明使用复剂配方,解决了配方中有机组分与无机组分难以兼容的问题,并且拓宽了复剂配方的适用范围；并且在使用过程中,可以先对钢板进行加热,加热到50℃以上胶的软化点温度时再进行除胶,在提高除胶效果的同时还兼顾除油性能和环保性能。(The invention discloses a phosphorus-free water-based degumming and degreasing agent which is prepared from an agent A and an agent B in a mass ratio of 3-5: 1-1.5; the agent A is prepared from the following components in percentage by mass: 10-18% of potassium hydroxide, 1-7% of pH value stabilizer, 1-2% of chelating agent and the balance of water; the agent B is prepared from the following components in percentage by mass: 0-5% of a solubilizer, 5-15% of a surfactant, 0.5-2% of a defoaming agent, 12-15% of an organic solvent and the balance of water. The invention uses the compounding agent formula, solves the problem that organic components and inorganic components in the formula are difficult to be compatible, and widens the application range of the compounding agent formula; in addition, in the using process, the steel plate can be heated to the softening point temperature of 50 ℃ or higher for gluing, and then glue is removed, so that the glue removing effect is improved, and the oil removing performance and the environmental protection performance are considered.)

1. A non-phosphorus water-based degumming and degreasing agent is characterized in that: the preparation method comprises the following steps of (1) preparing an agent A and an agent B according to a mass ratio of 3-5: 1-1.5; the agent A is prepared from the following components in percentage by mass: 10-18% of potassium hydroxide, 1-7% of pH value stabilizer, 1-2% of chelating agent and the balance of water; the agent B is prepared from the following components in percentage by mass: 0-5% of a solubilizer, 5-15% of a surfactant, 0.5-2% of a defoaming agent, 12-15% of an organic solvent and the balance of water.

2. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the potassium hydroxide is replaced by any one or more of sodium hydroxide, monoethanolamine, diethanolamine or ethylenediamine.

3. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the pH value stabilizer is one or a combination of more of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, ammonia water, triethanolamine, sodium metasilicate, borax or potassium metaborate.

4. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the chelating agent is one or a combination of more of sodium gluconate, carboxymethyl cellulose, polyvinylpyrrolidone or polyvinyl alcohol.

5. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the solubilizer is one or a combination of a plurality of alkyl glycoside, sodium alginate, tween, sodium polyacrylate or polyethylene glycol.

6. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the surfactant is one or a combination of more of isomeric alcohol polyoxyethylene ether, fatty alcohol-polypropylene ether, nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, potassium oleate or hexadecyl trimethyl ammonium bromide.

7. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the defoaming agent is one or a combination of several of an organic silicon defoaming agent, a polyether defoaming agent or a polyether modified silicon defoaming agent.

8. The phosphorus-free water-based degummed degreaser of claim 1, wherein: the organic solvent is one or a combination of more of n-octanol, n-nonanol, n-decanol, phenoxyethanol, lauryl alcohol, palmityl alcohol, diethylene glycol monobutyl ether, diethylene glycol monomethyl ether, dipropylene glycol monomethyl ether or dipropylene glycol monobutyl ether.

9. The phosphorus-free water-based degummed degreaser of claim 8, wherein: the flash point of the organic solvent is above 70 ℃.

Technical Field

The invention relates to a phosphorus-free water-based degumming and degreasing agent.

Background

The stainless steel plate is coated with plastic film when leaving the factory, so as to prevent the surface of the stainless steel plate from being scratched. Glue on the back of the plastic film can remain on the surface of the stainless steel plate due to high temperature and deformation in the stamping forming process. The existing adhesive remover can not remove the residual transfer adhesive on the surface of steel, so that the appearance is seriously unqualified or the adhesive force is poor after the subsequent coating. So at present factories use wiping of organic solvents for removal.

However, most of organic solvents used in the degumming process are low-flash-point organic solvents, although the cleaning effect is guaranteed, the low-flash-point organic solvents have the problems of high volatility, high smell and high toxicity, the flash point is low, the fire hazard is caused, the smell and the toxicity harm the health of workers, and the product has weak oil removal and degreasing capabilities; in order to improve the oil removing and degreasing capability, an active agent is added into the formula, and a large amount of solubilizer needs to be added into the formula for the stability of the formula after the active agent is added, so that the large amount of solubilizer is added, the medicament residue is large, and the water film is incomplete. In addition, in order to solve the problem that the low-flash-point organic solvent is easy to volatilize, the problem can be solved by adding a volatilization inhibitor into the formula, but the oil and glue removing capability of the glue removing agent system is reduced after the volatilization inhibitor is added. Meanwhile, the existing degumming agents are single agents, so that the degumming agent is not flexible in use and cannot be suitable for various actual working conditions, and the formula stability (solubilization stability) is greatly limited when additives are required to be added into the formula according to different working conditions.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides the phosphorus-free water-based degumming and degreasing agent which adopts a compounding agent formula, and the mixing mass ratio of the agent A and the agent B in the compounding agent formula is adjusted, so that both degumming and degreasing are realized, the application range of the degreasing agent is enlarged, and the stability of the system is improved.

The technical scheme is as follows: the phosphorus-free water-based degumming and degreasing agent disclosed by the invention is prepared from an agent A and an agent B in a mass ratio of 3-5: 1-1.5; the agent A is prepared from the following components in percentage by mass: 10-18% of potassium hydroxide, 1-7% of pH value stabilizer, 1-2% of chelating agent and the balance of water; the agent B is prepared from the following components in percentage by mass: 0-5% of a solubilizer, 5-15% of a surfactant, 0.5-2% of a defoaming agent, 12-15% of an organic solvent and the balance of water.

Wherein, the potassium hydroxide is replaced by any one of sodium hydroxide, monoethanolamine, diethanolamine or ethylenediamine. The strong alkaline substance is mainly used for removing oil and has saponification reaction with oil stains on the steel plate.

Wherein the pH value stabilizer is one or more of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, ammonia water, triethanolamine, sodium metasilicate, borax or potassium metaborate.

The chelating agent is one or a combination of more of sodium gluconate, carboxymethyl cellulose, polyvinylpyrrolidone or polyvinyl alcohol, and can react with the antirust oil additive on the surface of the steel plate as the chelating agent.

Wherein the solubilizer is one or the combination of a plurality of alkyl glycoside, sodium alginate, tween, sodium polyacrylate or polyethylene glycol.

The surfactant is one or a combination of more of isomeric alcohol polyoxyethylene ether, fatty alcohol-polypropylene ether, nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, potassium oleate or hexadecyl trimethyl ammonium bromide, disperses residual gum and emulsifies oil.

Wherein the defoaming agent is one or a combination of several of an organic silicon defoaming agent, a polyether defoaming agent or a polyether modified silicon defoaming agent.

Wherein the organic solvent is one or a combination of more of n-octanol, n-nonanol, n-decanol, phenoxyethanol, lauryl alcohol, palmityl alcohol, diethylene glycol monobutyl ether, diethylene glycol monomethyl ether, dipropylene glycol monomethyl ether or dipropylene glycol monobutyl ether; the flash point of the organic solvent is above 70 ℃.

Has the advantages that: the invention uses the compounding agent formula, solves the problem that organic components and inorganic components in the formula are difficult to be compatible, and also widens the application range of the compounding agent formula; in addition, in the using process, the steel plate can be heated firstly, and then the glue is removed when the temperature is heated to the softening point temperature of the glue at 50 ℃, so that the glue removing effect is improved, and the oil removing performance and the environmental protection performance are considered.

Drawings

FIG. 1 is a stainless steel workpiece with residual glue;

fig. 2 shows a stainless steel workpiece with glue removed completely.

Detailed Description

The technical solution of the present invention is further illustrated below with reference to specific examples.

Example 1

Stainless steel plate: a stainless steel workpiece (produced by Shanghai Bao Steel) stamped by a certain electric home appliance factory and having a specification (a circular workpiece with a diameter of 10cm and a thickness of 0.8 mm) was used as the metal sample plate in example 1.

The phosphorus-free water-based degumming and degreasing agent is compounded by an agent A and an agent B; the agent A is prepared from the following components in percentage by mass: 10% potassium hydroxide, 2% sodium bicarbonate, 5% potassium metaborate, 1% sodium gluconate and the balance water; firstly, cleaning a reaction kettle, adding water with required amount, then sequentially adding the components with the formula amount while stirring, and after fully stirring and dissolving, changing the solution into a uniform and transparent state, wherein the solution is the agent A;

the agent B is prepared from the following components in percentage by mass: 8% of isomeric alcohol polyoxyethylene ether, 0.5% of polyether defoamer, 5% of alkyl glycoside, 6% of phenoxyethanol, 6% of dipropylene glycol monomethyl ether, 1% of hexadecyl trimethyl ammonium bromide and the balance of water.

In a working site, diluting the agent A and the agent B by using water to obtain the using concentration of the agent A of 5 percent (mass fraction) and the using concentration of the agent B of 1 percent (mass fraction), mixing the agent A of 5 percent and the agent B of 1 percent, using ultrasonic waves, using the mixture at the temperature of 50-55 ℃ and treating for 6-10 minutes. The degreased stainless steel plate keeps bright, the surface of the degreased stainless steel plate is free from blackening or whitening, the surface of the stainless steel plate is observed to have continuous and complete water film, and no glue residue marks are observed in the sun.

Example 2

Stainless steel plate: a stainless steel workpiece (produced by Shanghai Bao Steel) stamped by a certain electrical home appliance factory and having a specification (a circular workpiece with a diameter of 10cm and a thickness of 0.8 mm) was used as the metal sample plate in example 2.

The phosphorus-free water-based degumming and degreasing agent is compounded by an agent A and an agent B; the agent A is prepared from the following components in percentage by mass: 15% of sodium hydroxide, 3% of diethanolamine, 1% of sodium metasilicate, 2% of polyvinyl alcohol and the balance of water; firstly, cleaning a reaction kettle, adding water with required amount, then sequentially adding the components with the formula amount while stirring, and after fully stirring and dissolving, changing the solution into a uniform and transparent state, wherein the solution is the agent A;

the agent B is prepared from the following components in percentage by mass: 10% of fatty alcohol-polyoxyethylene ether, 1% of an organic silicon defoaming agent, 8% of n-octanol, 6% of diethylene glycol monobutyl ether, 2% of potassium oleate and the balance of water.

In a working site, diluting the agent A and the agent B by using water to obtain the using concentration of the agent A of 3 percent (mass fraction) and the using concentration of the agent B of 1.5 percent (mass fraction), mixing the agent A of 3 percent and the agent B of 1.5 percent, using the mixture by spraying, wherein the using temperature is 55-60 ℃, and the treatment time is 8-10 minutes. The degreased stainless steel plate keeps bright, the surface of the degreased stainless steel plate is free from blackening or whitening, the surface of the stainless steel plate is observed to have continuous and complete water film, and no glue residue marks are observed in the sun.

Example 3

Stainless steel plate: a stainless steel workpiece (produced by Shanghai Bao Steel) stamped by a certain electrical home appliance factory and having a specification (a circular workpiece with a diameter of 10cm and a thickness of 0.8 mm) was used as the metal sample plate in example 2.

The phosphorus-free water-based degumming and degreasing agent is compounded by an agent A and an agent B; the agent A is prepared from the following components in percentage by mass: 15% of monoethanolamine, 5% of triethanolamine, 2% of polyvinylpyrrolidone and the balance of water; firstly, cleaning a reaction kettle, adding water with required amount, then sequentially adding the components with the formula amount while stirring, and after fully stirring and dissolving, changing the solution into a uniform and transparent state, wherein the solution is the agent A;

the agent B is prepared from the following components in percentage by mass: 5% of lauryl sodium sulfate, 4% of fatty alcohol-polypropylene ether, 2% of an organic silicon defoamer, 8% of n-decyl alcohol, 4% of dipropylene glycol monobutyl ether and the balance of water.

In a working site, diluting the agent A and the agent B by using water to obtain the using concentration of the agent A of 3 percent (mass fraction) and the using concentration of the agent B of 1.5 percent (mass fraction), mixing the agent A of 3 percent and the agent B of 1.5 percent, using the mixture by spraying, wherein the using temperature is 55-60 ℃, and the treatment time is 8-10 minutes. The degreased stainless steel plate keeps bright, the surface of the degreased stainless steel plate is free from blackening or whitening, the surface of the stainless steel plate is observed to have continuous and complete water film, and no glue residue marks are observed in the sun.

The degelling degreasing agent with the same use concentration (mass fraction) as that of the degelling degreasing agent in the embodiment 1-3 and a certain commercially available degelling degreasing agent are taken as degreasing agent working solutions, and degelling capacity and water film integrity tests are carried out. Stainless steel plate used for the experiment: stainless steel workpieces (produced by Shanghai Bao steel) stamped by certain household electrical appliances are used as implemented metal templates with the specification of (round workpieces with the diameter of 10cm and the thickness of 0.8 mm).

The cleaning capacity test method refers to JB/T4323.2-1999 '6 cleaning capacity experiment method', the use temperature of the degreasing agent is controlled to be 55 ℃ in the experiment process, the ultrasonic degreasing time is 6min, the oil stain to be tested is prepared according to the standard, and the oil hanging amount is 1-1.5 g/m². The integrity of the water film was determined by visual observation after rinsing and standing for 30 s. The gel removal integrity was determined by observing the residue after washing in the sunlight.

TABLE 1 comparison of the properties of the degreasing agents

	Degreasing ability%	Integrity of water film	Cleaning rate of residual gum%
				Example 1	95	Complete (complete)	95％
Example 2	93	Complete (complete)	98％
				Example 3	98	Complete (complete)	98％
Commercial degelling degreasing agent	90	Incomplete	80％

As shown in Table 1, the degreasing agent of the present invention has a degreasing and degreasing capability of 93-98% under heating conditions, while the cleaning capability of the commercial degreasing agent is 90%, and the water film is incomplete. The residual gum cleaning level of the invention is far higher than that of the commercial degreasing agent. The residual gum cleaning level is mainly determined by the action of organic solvent, and the water film integrity is mainly determined by degreasing capacity and wettability of active agent. The degumming degreasing agent has good residual gum cleaning rate and good degreasing capability, and organic components and inorganic components in the formula can be compatible, and the stability of the compound solvent is good.