CN114437666A - Metal dehydrating agent and preparation method thereof - Google Patents

Abstract

The invention discloses a metal dehydrating agent and a preparation method thereof, and the dehydrating agent disclosed by the invention can be used for effectively removing water or water-based components on the surface of metal in the metal processing process, so that the cleanliness of a metal piece is improved, the service life of the dehydrating agent is not influenced, various metal materials are not influenced, and the performance of the metal piece is further influenced. Simple production process, low cost, no smell and no environmental pollution of effluent.

Description

Metal dehydrating agent and preparation method thereof

The technical field is as follows:

the invention relates to the field of metal cleaning agents and preparation methods thereof, in particular to a metal dehydrating agent and a preparation method thereof.

Background art:

with the continuous development of industrial modern processes, the requirements on the precision and the like of a metal workpiece are higher and higher in the metal processing process, for example, after a metal piece is subjected to the procedures of cleaning and rinsing by using an aqueous cleaning agent, water stains or residues of aqueous components often exist on the surface of the metal workpiece, rust stains and the like are generated on the surface of the metal workpiece due to the water stains on the surface of the metal workpiece, so that the processing and production of subsequent procedures are influenced, the influence on the precision and cleanliness of the metal workpiece is larger, and for the current situation, how to produce a special metal dehydrating agent product is a realistic requirement in the current metal processing industry.

However, no special metal dehydrating agent product appears in the current market, for example, the Chinese patent publication No. CN101698952A, discloses a process for preparing zinc powder by a wet method, and relates to a process for preparing zinc powder. Crushing a zinc-containing raw material, immersing the raw material into a strong alkali solution for leaching at 80 ℃ for 60-90 minutes, adding zinc powder into the filtered liquid for purification, and filtering impurities; the remaining zinc-containing filtrate was worked up as follows: (I) electrolysis: the cathode plate is a 304 stainless steel plate or a ruthenium-iridium-coated titanium plate, and the anode plate is a titanium plate or a 316 stainless steel plate; (II) centrifugal dehydration: adding methanol or metal dehydrating agent, wherein the temperature of centrifugal dehydration is normal temperature, and the reaction time of centrifugal dehydration is 3-6 minutes; (III) drying: flash airflow drying or airflow drying is adopted, the temperature is controlled to be 80-150 ℃, and high-temperature and high-speed airflow is used for instantly taking away the moisture on the surface of the zinc powder. As can be seen from the technical solutions disclosed in the above-mentioned documents, the metal dehydrating agent used therein is also methanol or the like or zinc powder as the dehydrating agent.

Therefore, how to provide a special metal dehydrating agent and a preparation method thereof, so that the water and water-based components on the surface of a metal piece can be rapidly and effectively removed, and the cleanliness of the metal piece is improved; meanwhile, the paint does not affect the metal material or the quality, is safe and environment-friendly, has no stimulation to the skin of a human body, has little smell and the like.

The invention content is as follows:

the invention provides a metal dehydrating agent and a preparation method thereof, which can be used for effectively removing water or water-based components on the surface of metal in the metal processing process, improve the cleanliness of a metal piece, simultaneously do not influence the service life of the dehydrating agent, and do not influence the metal material of various metal workpieces so as to influence the performance of the metal workpieces. The preparation method is simple, low in cost, odorless and free of pollution to the environment.

The invention discloses a metal dehydrating agent which comprises the following components in percentage by mass:

and controlling the ethylene glycol butyl ether to be chemically pure or analytically pure.

The invention discloses a metal dehydrating agent, which preferably comprises the following components in percentage by mass:

another object of the present invention is to provide a method for preparing a metal dehydrating agent, which comprises the following steps:

1) placing ethylene glycol monobutyl ether, n-decanoic acid, laurylamine and octadecylamine into a reaction device under the condition of normal temperature, stirring the mixture to be transparent uniform liquid under the condition of continuous stirring, and controlling the stirring time to be 20-40min to obtain transparent uniform mixed liquid for later use;

2) adding n-decane and n-decanol which are raw materials consisting of other components in the formula into the transparent and uniform mixed liquid obtained in the step 1), and continuously stirring and uniformly mixing to obtain transparent and uniform liquid; finally, the metal dehydrating agent product is obtained after inspection and filling.

Stability of the dehydrating agent of the invention: the dehydrating agent composition prepared by the invention is observed to be layered after being stored for a long time (namely in a quality guarantee period) at room temperature or not higher than 40 degrees: no delamination, no turbidity, unstable as delamination or turbidity.

Within one week at low temperature (-5 ± 2 ℃), the solution was observed to delaminate: no delamination, no turbidity, unstable as delamination or turbidity; the dehydrating agent prepared by the invention is not layered and turbid through the detection of the method.

Dehydration rate: the dehydration rate is the weight of water removed/the original weight of water on the metal workpiece.

Explanation of dehydration rate, since there is no explanation of performance of the metal dehydrating agent exclusively used, the calculation of the dehydration rate of the present invention is carried out by calculation or expression explanation of the removal rate of the dehydrating agent. That is, the difference between the dehydrated weight of the processed metal workpiece by using the metal dehydrating agent of the present invention and the original weight of the processed metal workpiece without using the metal dehydrating agent of the present invention was calculated by dividing the percentage by a precise measuring instrument.

The invention adopts the components and has the following characteristics: firstly, the metal dehydrating agent has the dehydration rate of more than 98 percent on a metal workpiece, has no water stain residue on the metal surface, also meets the metal processing standard requirement, can rapidly and effectively remove the water and water-based components on the surface of the metal workpiece, and improves the cleanliness of the metal workpiece; and secondly, the dehydrated water and the like are deposited at the bottom of the container, so that the separation is convenient, and the service life of the metal dehydrating agent disclosed by the invention is not influenced. Namely, the recycling of the metal dehydrating agent of the invention is not affected; tests show that the net removal rate reaches more than 98%, and the quick dehydration effect is achieved.

The metal dehydrating agent has the other advantage that the use of the metal dehydrating agent does not influence various metal materials, thereby influencing the performance of metal pieces or metal workpieces. Safe and environment-friendly, has little smell and no stimulation to human skin. And meets the current environmental protection requirements.

The product of the invention is detected by the analysis and test center of Jiangxi province, and all technical indexes meet the requirements, and the specific technical indexes are shown in the following table 1

Test environmental conditions, temperature: 20 ℃, humidity: the content of the active carbon is 55 percent,

the inspection evidence, GB/T6283-2008, etc.,

a testing instrument, a trace moisture tester and the like,

the status of the sample, liquid,

the technical indexes of the product of the invention are as follows in table 1:

TABLE 1

Description of the drawings: the product of the invention meets the requirements by detecting all indexes, and has no influence or little influence on the environment.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to examples.

Example (b): the following were used:

firstly, description: in the embodiments 1 and 2 of the invention, the ethylene glycol butyl ether is chemically pure, and the metal dehydration rate of the ethylene glycol butyl ether reaches 98.2% through use and detection. The above components of the present invention are commercially available.

Secondly, in examples 3 and 4, the ethylene glycol butyl ether is analytically pure, and the metal dehydration rate reaches 99.1% through using detection. Meanwhile, the components of the invention can be obtained by the market.

The above embodiments of the present invention can be prepared by the following method: 1) placing ethylene glycol monobutyl ether, n-decanoic acid, laurylamine and octadecylamine into a reaction device under the condition of normal temperature, stirring the mixture to be transparent uniform liquid under the condition of continuous stirring, and controlling the stirring time to be 20-40min to obtain transparent uniform mixed liquid for later use;

2) adding n-decane and n-decanol which are raw materials consisting of other components in the formula into the transparent and uniform mixed liquid obtained in the step 1), and continuously stirring and uniformly mixing to obtain transparent and uniform liquid; finally, the metal dehydrating agent product is obtained after inspection and filling.

In the comparative example 1, the following examples were conducted,

the metal workpiece is dehydrated by using alcohol commonly used in the market, such as methanol, as a dehydrating agent for the metal workpiece, and the dehydration rate of the metal workpiece is only about 85%. The detection method and conditions are the same as those of the method of the present invention.

In the comparative example 2, the following examples were conducted,

the metal workpiece is dehydrated by adopting the commonly used alcohols in the market as the mixture of methanol and ethanol or pure ethanol as the dehydrating agent of the metal workpiece, and the dehydration rate is only about 85-90 percent. The detection method and conditions are the same as those of the method of the present invention.

In the comparative example 3, the following examples were conducted,

the metal workpiece is dehydrated by adopting pure ethanol which is commonly used in the market as a dehydrating agent for the metal workpiece, and the dehydration rate of the metal workpiece is only about 84 percent. The detection method and conditions are the same as those of the method of the present invention.

The metal dehydrating agent disclosed by the invention has the highest dehydrating rate which is more than 99%, and the metal processing piece is not damaged due to low use cost, but the prior art is only about 85%.

The embodiments of the invention disclosed above are intended merely to aid in the explanation of the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.

Claims (3)

1. The metal dehydrating agent comprises the following components in percentage by mass:

85 to 90 percent of n-decane,

5 to 10 percent of ethylene glycol butyl ether,

1 to 5 percent of n-decanoic acid,

0.5 to 1 percent of n-decanol,

1 to 5 percent of laurylamine,

0.5 to 1 percent of octadecenylamine,

and controlling the ethylene glycol butyl ether to be chemically pure or analytically pure.

2. The metal dehydrating agent as claimed in claim 1, which is prepared from the following components in percentage by mass:

88 to 90 percent of n-decane,

6 to 8 percent of ethylene glycol butyl ether,

1 to 4 percent of n-decanoic acid,

0.5 to 1 percent of n-decanol,

1 to 3 percent of laurylamine,

octadecylamine 0.5-1%.

3. A method for producing a metal dehydrating agent as claimed in claim 1 or 2, which is characterized by comprising the steps of:

1) placing ethylene glycol monobutyl ether, n-decanoic acid, laurylamine and octadecylamine into a reaction device under the condition of normal temperature, stirring the mixture to be transparent uniform liquid under the condition of continuous stirring, and controlling the stirring time to be 20-40min to obtain transparent uniform mixed liquid for later use;

2) adding n-decane and n-decanol which are raw materials consisting of other components in the formula into the transparent and uniform mixed liquid obtained in the step 1), and continuously stirring and uniformly mixing to obtain transparent and uniform liquid; finally, the metal dehydrating agent product is obtained after inspection and filling.