阅读说明：本技术 一种润滑剂的制备方法 (Preparation method of lubricant ) 是由 陈宇龙 尹菊 于 2020-12-01 设计创作，主要内容包括：本发明公开了一种润滑剂的制备方法,包括如下步骤：首先加热基础油,当油温达到80-100℃的时候加入硬脂酸和HLB值＜6的乳化剂混合均匀,得到油相,备用,然后将水、多元醇混合均匀,得到水相A,在充分搅拌后,将水相A缓慢加入油相中继续搅拌进行乳化,得到乳液a,备用,然后将多元醇、HLB值＞15的乳化剂、水混合均匀,得到水相B。通过采用本发明设计的制备方法,能够使油脂在皂化反应之前形成水包油包水结构的乳液,得到充分的分散,在皂化反应中增加油脂与碱液接触的表面积,提高反应速率,而且在生产之前先对基础油加温后再加入原料,可以省略逐一对原料加热的过程,可以节约能源,同时减少的制备步骤,简化工艺。(The invention discloses a preparation method of a lubricant, which comprises the following steps: firstly heating base oil, adding stearic acid and an emulsifier with HLB value less than 6 when the oil temperature reaches 80-100 ℃, uniformly mixing to obtain an oil phase for later use, then uniformly mixing water and polyol to obtain a water phase A, after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring for emulsification to obtain an emulsion a for later use, and then uniformly mixing the polyol, the emulsifier with HLB value greater than 15 and water to obtain a water phase B. By adopting the preparation method designed by the invention, the grease can form the emulsion with the water-in-oil-in-water structure before the saponification reaction, the full dispersion is obtained, the contact surface area of the grease and the alkali liquor is increased in the saponification reaction, the reaction rate is improved, and the raw materials are added after the base oil is heated before the production, so that the process of heating the raw materials one by one can be omitted, the energy can be saved, the preparation steps can be reduced, and the process is simplified.)

1. A method of preparing a lubricant, characterized by: the method comprises the following steps:

s1, heating the base oil, adding stearic acid and an emulsifier with HLB value less than 6 when the oil temperature reaches 80-100 ℃, and uniformly mixing to obtain an oil phase for later use;

s2, uniformly mixing water and polyhydric alcohol to obtain a water phase A, and after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring and emulsifying to obtain emulsion a for later use;

s3, uniformly mixing the polyol, the emulsifier with the HLB value being more than 15 and water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring, and continuously stirring for emulsification to obtain an emulsion B for later use;

s4, mixing potassium hydroxide with water to obtain a potassium hydroxide solution; then adding the emulsion b obtained in the step 3 into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant;

s5, carrying out inspection and test on each batch of products, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting one sample in each batch, and directly discharging qualified finished products through gravity flow;

and S6, packaging the qualified product in an automatic packaging machine from a discharge port of the stirring tank through a feeding pump, and directly connecting the qualified product with a packaging machine through a hose to keep the qualified product sealed.

2. The method of preparing a lubricant according to claim 1, wherein: and in the step one, the rotating speed of the stirrer is kept at 1000-1200 rpm when the stearic acid and the emulsifier are mixed, and stirring is carried out for 20-30 min.

3. The method of preparing a lubricant according to claim 1, wherein: and in the second step, when the water phase A and the oil phase are emulsified, the emulsifying temperature is 40-60 ℃, and the emulsifying time is 25-35 min.

4. The method of preparing a lubricant according to claim 1, wherein: in the fourth step, any one of sodium hydroxide, borax, sodium nitrite and sodium stearate can be used.

5. The method of preparing a lubricant according to claim 1, wherein: the emulsion a in the second step is an emulsion with a water-in-oil structure, and the emulsion b in the third step is an emulsion with a water-in-oil-in-water structure.

Technical Field

The invention relates to the technical field of lubricants, in particular to a preparation method of a lubricant.

Background

The lubricant is used for lubricating, cooling and sealing the friction part of the machinery, and is divided into oily liquid lubricating oil, grease-like semisolid lubricating grease and solid lubricant, the lubricant can play a role in cooling, cleaning, preventing pollution and the like on a friction pair, and is mostly delivered to each part needing to be lubricated through a lubricating system, so that the lubricant has the advantages of good cooling performance, good permeability, small environmental pollution and the like;

the soap-based lubricant has good lubricating and protecting effects on mechanical parts, so that the soap-based lubricant is widely applied, but in the prior art, a conventional grease saponification process needs a high-temperature long-time reaction, the saponification temperature generally needs to be higher than 100 ℃, the saponification time is at least 3-4 hours, the reaction efficiency is low, the energy consumption is high, and the current increasing lubricant requirements cannot be met.

Disclosure of Invention

The invention aims to provide a preparation method of a lubricant, which has the advantage of high efficiency and solves the problems that the traditional preparation method of the lubricant has low reaction efficiency and high energy consumption and cannot meet the increasing requirements of the lubricant at present.

In order to achieve the purpose, the invention provides the following technical scheme: a method of making a lubricant comprising the steps of:

s1, heating the base oil, adding stearic acid and an emulsifier with HLB value less than 6 when the oil temperature reaches 80-100 ℃, and uniformly mixing to obtain an oil phase for later use;

s2, uniformly mixing water and polyhydric alcohol to obtain a water phase A, and after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring and emulsifying to obtain emulsion a for later use;

s3, uniformly mixing the polyol, the emulsifier with the HLB value being more than 15 and water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring, and continuously stirring for emulsification to obtain an emulsion B for later use;

s4, mixing potassium hydroxide with water to obtain a potassium hydroxide solution; then adding the emulsion b obtained in the step 3 into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant;

s5, carrying out inspection and test on each batch of products, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting one sample in each batch, and directly discharging qualified finished products through gravity flow;

and S6, packaging the qualified product in an automatic packaging machine from a discharge port of the stirring tank through a feeding pump, and directly connecting the qualified product with a packaging machine through a hose to keep the qualified product sealed.

Preferably, the rotation speed of the stirrer is kept at 1000-1200 rpm when the stearic acid and the emulsifier are mixed in the step one, and the stirring is carried out for 20-30 min.

Preferably, when the water phase A and the oil phase are emulsified in the second step, the emulsifying temperature is 40-60 ℃, and the emulsifying time is 25-35 min.

Preferably, any one of sodium hydroxide, borax, sodium nitrite and sodium stearate can be used in the fourth step.

Preferably, the emulsion a in the second step is an emulsion with a water-in-oil structure, and the emulsion b in the third step is an emulsion with a water-in-oil-in-water structure.

Compared with the prior art, the invention has the following beneficial effects:

by adopting the preparation method designed by the invention, the grease can form the emulsion with the water-in-oil-in-water structure before the saponification reaction, the full dispersion is obtained, the contact surface area of the grease and the alkali liquor is increased in the saponification reaction, the reaction rate is improved, and the raw materials are added after the base oil is heated before the production, so that the process of heating the raw materials one by one can be omitted, the energy can be saved, the preparation steps can be reduced, and the process is simplified.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that:

a method of making a lubricant comprising the steps of:

s1, heating the base oil, adding stearic acid and an emulsifier with HLB value less than 6 when the oil temperature reaches 80-100 ℃, and uniformly mixing to obtain an oil phase for later use;

s2, uniformly mixing water and polyhydric alcohol to obtain a water phase A, and after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring and emulsifying to obtain emulsion a for later use;

s3, uniformly mixing the polyol, the emulsifier with the HLB value being more than 15 and water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring, and continuously stirring for emulsification to obtain an emulsion B for later use;

s4, mixing potassium hydroxide with water to obtain a potassium hydroxide solution; then adding the emulsion b obtained in the step 3 into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant;

s5, carrying out inspection and test on each batch of products, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting one sample in each batch, and directly discharging qualified finished products through gravity flow;

and S6, packaging the qualified product in an automatic packaging machine from a discharge port of the stirring tank through a feeding pump, and directly connecting the qualified product with a packaging machine through a hose to keep the qualified product sealed.

The first embodiment is as follows:

firstly, heating base oil, adding stearic acid and an emulsifier with an HLB value of less than 6 when the oil temperature reaches 80-100 ℃, uniformly mixing to obtain an oil phase for later use, then uniformly mixing water and polyol to obtain a water phase A, after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring for emulsification to obtain an emulsion a for later use, then uniformly mixing the polyol, the emulsifier with an HLB value of more than 15 and the water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring for continuous stirring for emulsification to obtain an emulsion B for later use, and then mixing potassium hydroxide and water to obtain a potassium hydroxide solution; and (3) adding the emulsion b obtained in the step (3) into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant, then carrying out inspection and test on products in each batch, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting a sample in each batch, directly discharging qualified finished products through gravity flow, finally feeding the qualified products into an automatic packaging machine from a discharge port of an open stirring tank through a feeding pump for finished product packaging, directly connecting the qualified products with the packaging machine through a hose, and keeping the qualified products sealed.

Example two:

in the first embodiment, the following steps are added:

and (3) in the step one, the rotating speed of the stirrer is kept at 1000-1200 rpm when the stearic acid and the emulsifier are mixed, and stirring is carried out for 20-30 min.

Firstly, heating base oil, adding stearic acid and an emulsifier with an HLB value of less than 6 when the oil temperature reaches 80-100 ℃, uniformly mixing to obtain an oil phase for later use, then uniformly mixing water and polyol to obtain a water phase A, after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring for emulsification to obtain an emulsion a for later use, then uniformly mixing the polyol, the emulsifier with an HLB value of more than 15 and the water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring for continuous stirring for emulsification to obtain an emulsion B for later use, and then mixing potassium hydroxide and water to obtain a potassium hydroxide solution; and (3) adding the emulsion b obtained in the step (3) into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant, then carrying out inspection and test on products in each batch, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting a sample in each batch, directly discharging qualified finished products through gravity flow, finally feeding the qualified products into an automatic packaging machine from a discharge port of an open stirring tank through a feeding pump for finished product packaging, directly connecting the qualified products with the packaging machine through a hose, and keeping the qualified products sealed.

Example three:

in the second embodiment, the following steps are added:

and in the second step, when the water phase A and the oil phase are emulsified, the emulsifying temperature is 40-60 ℃, and the emulsifying time is 25-35 min.

Firstly, heating base oil, adding stearic acid and an emulsifier with an HLB value of less than 6 when the oil temperature reaches 80-100 ℃, uniformly mixing to obtain an oil phase for later use, then uniformly mixing water and polyol to obtain a water phase A, after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring for emulsification to obtain an emulsion a for later use, then uniformly mixing the polyol, the emulsifier with an HLB value of more than 15 and the water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring for continuous stirring for emulsification to obtain an emulsion B for later use, and then mixing potassium hydroxide and water to obtain a potassium hydroxide solution; and (3) adding the emulsion b obtained in the step (3) into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant, then carrying out inspection and test on products in each batch, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting a sample in each batch, directly discharging qualified finished products through gravity flow, finally feeding the qualified products into an automatic packaging machine from a discharge port of an open stirring tank through a feeding pump for finished product packaging, directly connecting the qualified products with the packaging machine through a hose, and keeping the qualified products sealed.

Example four:

in the third embodiment, the following steps are added:

in the fourth step, any one of sodium hydroxide, borax, sodium nitrite and sodium stearate can be used.

Firstly, heating base oil, adding stearic acid and an emulsifier with an HLB value of less than 6 when the oil temperature reaches 80-100 ℃, uniformly mixing to obtain an oil phase for later use, then uniformly mixing water and polyol to obtain a water phase A, after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring for emulsification to obtain an emulsion a for later use, then uniformly mixing the polyol, the emulsifier with an HLB value of more than 15 and the water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring for continuous stirring for emulsification to obtain an emulsion B for later use, and then mixing potassium hydroxide and water to obtain a potassium hydroxide solution; and (3) adding the emulsion b obtained in the step (3) into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant, then carrying out inspection and test on products in each batch, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting a sample in each batch, directly discharging qualified finished products through gravity flow, finally feeding the qualified products into an automatic packaging machine from a discharge port of an open stirring tank through a feeding pump for finished product packaging, directly connecting the qualified products with the packaging machine through a hose, and keeping the qualified products sealed.

Example five:

in the fourth example, the following steps were added:

the emulsion a in the second step is an emulsion with a water-in-oil structure, and the emulsion b in the third step is an emulsion with a water-in-oil-in-water structure.

Firstly, heating base oil, adding stearic acid and an emulsifier with an HLB value of less than 6 when the oil temperature reaches 80-100 ℃, uniformly mixing to obtain an oil phase for later use, then uniformly mixing water and polyol to obtain a water phase A, after fully stirring, slowly adding the water phase A into the oil phase, continuously stirring for emulsification to obtain an emulsion a for later use, then uniformly mixing the polyol, the emulsifier with an HLB value of more than 15 and the water to obtain a water phase B, adding the emulsion a obtained in the step 2 into the water phase B under stirring for continuous stirring for emulsification to obtain an emulsion B for later use, and then mixing potassium hydroxide and water to obtain a potassium hydroxide solution; and (3) adding the emulsion b obtained in the step (3) into a potassium hydroxide solution under stirring for saponification reaction to obtain a soap-based lubricant, then carrying out inspection and test on products in each batch, inspecting whether indexes such as specific gravity, pH value and the like of the products meet quality requirements, detecting a sample in each batch, directly discharging qualified finished products through gravity flow, finally feeding the qualified products into an automatic packaging machine from a discharge port of an open stirring tank through a feeding pump for finished product packaging, directly connecting the qualified products with the packaging machine through a hose, and keeping the qualified products sealed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.