Isolating agent, method of making and method of use

Abstract

The application relates to the technical field of release agent preparation, in particular to a release agent, a preparation method and a use method, the preparation method comprising the following steps: adding starch into water of a first preset temperature and uniformly stirring to obtain a first product after gelatinization; adding protective powder and aluminum hydroxide into the first product of a second preset temperature and uniformly stirring to obtain the release agent; wherein the second preset temperature is lower than the first preset temperature. The preparation method selects common materials to form the release agent, the required cost is low, when the release agent is used, the release agent only needs to be sprayed to a high-temperature surface to be processed, the danger in use is reduced, the prepared release agent is not easy to damage the workpiece to be processed and the processing machine, and the subsequent maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of release agent preparation technology, and more specifically, to a release agent, its preparation method, and its application method. Background Technology

[0002] In today's society, aluminum profiles are widely used in many industries (such as the framing industry and the construction industry). Typically, aluminum profiles are processed using extrusion. Specifically, aluminum extrusion involves heating aluminum rods in a furnace, cutting them to the required length, and then transferring them to an extrusion press. Under the action of the die, the aluminum rods are formed into the corresponding aluminum profiles. During the extrusion process, residual pressure and adhesion can occur between the aluminum rod and the extrusion bar, affecting the extrusion of the next aluminum rod. Therefore, a separation layer is usually placed between the aluminum rod and the extrusion bar to reduce residual pressure and adhesion.

[0003] Forming an isolation layer between the aluminum rod and the extrusion bar usually involves soaking the movable extrusion pad in salt water or baking the end face of the aluminum rod with an acetylene flame. Among these methods, soaking in salt water will corrode the extrusion pad and increase subsequent maintenance costs; baking the aluminum rod with an acetylene flame will increase labor costs and is also more dangerous. Summary of the Invention

[0004] This invention provides a release agent, its preparation method, and its application method to solve the problem of high cost in forming a release layer between aluminum profiles and extrusion presses.

[0005] An embodiment of the present invention provides a method for preparing a separating agent, comprising the following steps:

[0006] Starch is added to water at a first preset temperature and stirred until it is gelatinized to obtain the first product;

[0007] Protective powder and aluminum hydroxide are added to the first product at a second preset temperature and stirred evenly to obtain a separating agent; wherein the second preset temperature is lower than the first preset temperature.

[0008] Preferably, the step of adding starch to water at a first preset temperature and stirring until homogeneous, and then gelatinizing to obtain the first product, includes:

[0009] The starch is added to water at the first preset temperature in multiple portions and stirred evenly. After gelatinization, the first product is obtained.

[0010] Preferably, the step of adding the protective powder and aluminum hydroxide to the first product at a second preset temperature and stirring until homogeneous to obtain the separating agent includes:

[0011] One of the protective powder and aluminum hydroxide is added to the first product at a second preset temperature in multiple portions and stirred evenly to obtain the second product; the other of the two is added to the second product at a second preset temperature in multiple portions and stirred evenly to obtain the separating agent.

[0012] Preferably, the temperature range of the first preset temperature is 58-64℃, and more preferably 60℃;

[0013] And / or, the temperature range of the second preset temperature is 15-35℃, preferably 25℃;

[0014] And / or, the release agent is stored in a vacuum environment.

[0015] Preferably, the raw materials for preparing the separating agent include:

[0016] 8-12 parts starch, preferably 10 parts;

[0017] 10-16 parts of protective powder, preferably 13 parts;

[0018] 8-12 parts aluminum hydroxide, preferably 10 parts;

[0019] Water 60-74 parts, preferably 67 parts.

[0020] Preferably, the protective powder comprises 10-16 parts of talc powder, preferably 13 parts; the step of adding the protective powder and aluminum hydroxide to the first product at a second preset temperature and stirring evenly to obtain the release agent comprises: adding one of the talc powder and the aluminum hydroxide to the first product at the second preset temperature in multiple portions and stirring evenly to obtain a third product; adding the other of the two to the third product at the second preset temperature in multiple portions and stirring evenly to obtain the release agent;

[0021] Alternatively, the protective powder may include:

[0022] Talc powder 5-8 parts, preferably 6.5 parts;

[0023] 5-8 parts of toner, preferably 6.5 parts;

[0024] The step of adding protective powder and aluminum hydroxide to the first product at a second preset temperature and stirring evenly to obtain a release agent includes: adding one of the three components—carbon powder, talc powder, and aluminum hydroxide—to the first product at a second preset temperature in multiple batches and stirring evenly to obtain a fourth product; adding another of the three components to the fourth product at a second preset temperature in multiple batches and stirring evenly to obtain a fifth product; and adding the last of the three components to the fifth product at a second preset temperature in multiple batches and stirring evenly to obtain a release agent.

[0025] Preferably, the starch has a particle size range of 2-10 μm, and more preferably 5 μm;

[0026] And / or, the particle size of the talc powder is in the range of 5-10 μm, preferably 8 μm;

[0027] And / or, the particle size of the aluminum hydroxide is in the range of 3-5 μm, preferably 4 μm;

[0028] And / or, the particle size of the toner is in the range of 2-5 μm, preferably 3 μm.

[0029] The beneficial effects of the method for preparing a release agent provided in this embodiment of the invention are as follows: In the process of preparing the release agent, starch is first added to water at a first preset temperature and stirred evenly. After gelatinization, a first product is obtained. Then, protective powder and aluminum hydroxide are added to the first product at a second preset temperature and stirred evenly to obtain the release agent. Common and inexpensive raw materials are selected to prepare the release agent, ensuring low preparation cost. When using the release agent, it is only necessary to spray it onto the high-temperature surface to be processed, reducing the danger of use. When the release agent comes into contact with the high-temperature surface to be processed, the water will evaporate first. Due to the obstruction of the flame retardant aluminum hydroxide, the gelatinized starch will not burn directly, but will char, so that the protective powder in the release agent is fixed on the surface to be processed, forming a first release layer. Subsequently, aluminum hydroxide will decompose into small aluminum oxide particles and water under high temperature. The water evaporates when heated, and the small aluminum oxide particles are fixed on the material surface, forming a second release layer, further strengthening the release effect. Multi-layer release is achieved, ensuring the release effect. Moreover, the release agent is not likely to damage the workpiece or processing machine, reducing subsequent maintenance costs.

[0030] The present invention also provides a separating agent, which is prepared by the above-described preparation method.

[0031] The beneficial effects of the release agent provided in this embodiment of the invention are as follows: the release agent can be made from only a few common materials, the cost is low, and the release agent is convenient and safe to use with low risk. At the same time, it is not easy to damage the workpiece and the processing machine, reducing the subsequent maintenance costs. For details, please refer to the beneficial effects of the preparation method described above, which will not be repeated here.

[0032] The present invention also provides a method for using a separating agent, comprising the following steps:

[0033] Compressed gas is introduced into the separating agent provided by the present invention to obtain a uniformly mixed suspension;

[0034] The suspension is sprayed onto the high-temperature surface to be processed to form an isolation layer.

[0035] Preferably, the compressed gas has a pressure range of 7-10 bar, and more preferably 8 bar.

[0036] The beneficial effects of the method of using a release agent provided in this embodiment of the invention are as follows: During the use of the release agent, compressed gas is introduced into the release agent provided by the present invention to obtain a uniformly mixed suspension, which avoids the sedimentation of particles in the release agent and ensures the effectiveness of the release agent. The suspension is sprayed onto the high-temperature surface to be processed to form a release layer, which realizes multi-layer isolation and reduces the danger of use. For details, please refer to the beneficial effects of the preparation method above, which will not be repeated here. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0038] Figure 1 This is a flowchart illustrating a method for preparing a release agent according to an embodiment of the present invention.

[0039] Figure 2 This is a flowchart illustrating a method for using a release agent according to an embodiment of the present invention. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0042] This invention provides a method for preparing a separating agent, such as... Figure 1 As shown, the preparation method mainly includes the following steps:

[0043] S102, starch is added to water at a first preset temperature and stirred evenly, and the first product is obtained after gelatinization;

[0044] S104, protective powder and aluminum hydroxide are added to the first product at a second preset temperature and stirred evenly to obtain a separating agent; wherein the second preset temperature is lower than the first preset temperature.

[0045] During the preparation of the release agent, it is forbidden to spray starch, protective powder, and aluminum hydroxide to avoid dust explosion and accidents.

[0046] In the preparation method of the release agent provided in this embodiment of the invention, starch is first added to water at a first preset temperature and stirred evenly to obtain a first product after gelatinization. Then, protective powder and aluminum hydroxide are added to the first product at a second preset temperature and stirred evenly to obtain the release agent. Common and inexpensive raw materials are selected to prepare the release agent, ensuring low preparation cost. When using the release agent, it is only necessary to spray it onto the high-temperature surface to be processed (e.g., the surface of a high-temperature aluminum profile), reducing the danger of use. When the release agent comes into contact with the high-temperature surface to be processed, the water will evaporate first. The gelatinized starch will not burn directly due to the hindrance of the flame retardant aluminum hydroxide, but will char, so that the protective powder in the release agent is fixed on the surface to be processed, forming a first release layer. Subsequently, aluminum hydroxide will decompose into small aluminum oxide particles and water in a high-temperature environment. The water evaporates when heated, and the small aluminum oxide particles are fixed on the material surface to form a second release layer, further enhancing the release effect. Multi-layer release is achieved, ensuring the release effect. Moreover, the release agent is not likely to damage the workpiece (e.g., aluminum profile) and processing machine (e.g., extruder), reducing subsequent maintenance costs.

[0047] In this embodiment of the invention, step S102 specifically includes:

[0048] The starch is added to water at a first preset temperature in multiple portions and stirred evenly. After gelatinization, the first product is obtained. Adding the starch in multiple portions allows for more thorough gelatinization. The first product is a semi-transparent colloidal solution with a certain viscosity, which hinders the sedimentation of the subsequently added protective powder and aluminum hydroxide.

[0049] In this embodiment of the invention, step S104 specifically includes:

[0050] One of the protective powder and aluminum hydroxide is added to the first product at the second preset temperature in multiple portions and stirred evenly to obtain the second product; the other of the two is added to the second product at the second preset temperature in multiple portions and stirred evenly to obtain the separating agent.

[0051] In the preparation of the release agent, the above steps can be specifically as follows: First, the protective powder can be added in multiple portions and stirred evenly, then aluminum hydroxide can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly, then the protective powder can be added in multiple portions and stirred evenly to obtain the release agent. The process of adding the protective powder and aluminum hydroxide in multiple portions and stirring ensures that the protective powder and aluminum hydroxide are more evenly dispersed when the release agent is finally generated. When using the release agent, aluminum hydroxide acts as a flame retardant, and the protective powder adheres to the surface to be processed, forming a release layer to protect the equipment.

[0052] In this embodiment of the invention, the first preset temperature range is 58-64℃, preferably 60℃. The first preset temperature range is more suitable for gelatinizing starch, allowing the starch to gelatinize more thoroughly in water. The second preset temperature range is 15-35℃, preferably 25℃. Lowering the temperature to the second preset temperature avoids the thermal decomposition of the subsequently added release agent used to prepare the fuel. The release agent is stored in a vacuum environment, which is beneficial for its preservation, extends its storage time, prevents impurities in the air from entering the release agent, and ensures the quality of the release agent.

[0053] In this embodiment of the invention, the raw materials for preparing the separating agent, by weight, include:

[0054] 8-12 parts starch, preferably 10 parts;

[0055] 10-16 parts of protective powder, preferably 13 parts;

[0056] 8-12 parts aluminum hydroxide, preferably 10 parts;

[0057] 60-74 parts water, preferably 67 parts;

[0058] The raw materials used to prepare the above-mentioned release agents are all common materials with low prices, thus ensuring low preparation costs. In addition, the raw materials are environmentally friendly and harmless to the human body.

[0059] In this embodiment of the invention, the protective powder includes 10-16 parts of talc powder, preferably 13 parts; at this time, step S104 specifically includes: adding one of the talc powder and aluminum hydroxide to the first product at the second preset temperature in multiple portions and stirring evenly to obtain the third product; adding the other of the two to the third product at the second preset temperature in multiple portions and stirring evenly to obtain the separating agent.

[0060] When the protective powder includes the aforementioned talc powder, in the process of preparing the release agent, step S104 is more specifically as follows: talc powder can be added in multiple portions and stirred evenly, and then aluminum hydroxide can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly, and then talc powder can be added in multiple portions and stirred evenly to obtain the release agent; because talc powder is an inorganic substance, it will not decompose or burn when heated, and is relatively stable, thus talc powder can be selected alone as the protective powder to form a release layer on the surface of the equipment to be processed.

[0061] In this embodiment of the invention, the protective powder may include carbon powder in addition to talc powder, with the following components: 5-8 parts of talc powder, preferably 6.5 parts; 5-8 parts of carbon powder, preferably 6.5 parts. In this case, step S104 specifically includes: adding one of the three components, carbon powder, talc powder and aluminum hydroxide, to the first product at the second preset temperature in multiple portions and stirring evenly to obtain the fourth product; adding another of the three components to the fourth product at the second preset temperature in multiple portions and stirring evenly to obtain the fifth product; adding the last of the three components to the fifth product at the second preset temperature in multiple portions and stirring evenly to obtain the separating agent.

[0062] When the protective powder includes the aforementioned talc powder and carbon powder, in the process of preparing the release agent, step S104 is more specifically as follows: Talc powder can be added in multiple portions and stirred evenly, then aluminum hydroxide can be added in multiple portions and stirred evenly, and finally carbon powder can be added in multiple portions and stirred evenly to obtain the release agent; or, talc powder can be added in multiple portions and stirred evenly, then carbon powder can be added in multiple portions and stirred evenly, and finally aluminum hydroxide can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly, then carbon powder can be added in multiple portions and stirred evenly, and finally talc powder can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly, then carbon powder can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly, then carbon powder can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly, then carbon powder can be added in multiple portions and stirred evenly to obtain the release agent; or, aluminum hydroxide can be added in multiple portions and stirred evenly. Add the carbon powder in multiple batches and stir well, then add the talc powder in multiple batches and stir well, and finally add the carbon powder in multiple batches and stir well to obtain the separating agent; or, add the carbon powder in multiple batches and stir well, then add the aluminum hydroxide in multiple batches and stir well, and finally add the talc powder in multiple batches and stir well to obtain the separating agent; or, add the carbon powder in multiple batches and stir well, then add the talc powder in multiple batches and stir well, and finally add the aluminum hydroxide in multiple batches and stir well to obtain the separating agent. Carbon powder is finer than talc powder. Carbon powder and talc powder together, as protective powders, help improve the separation effect and the extrusion and coarsening effect during processing, and can reduce the friction coefficient of the separating layer.

[0063] In this embodiment of the invention, the particle size of starch ranges from 2 to 10 μm, preferably 5 μm; the particle size of talc powder ranges from 5 to 10 μm, preferably 8 μm; the particle size of aluminum hydroxide ranges from 3 to 5 μm, preferably 4 μm; and the particle size of carbon powder ranges from 2 to 5 μm, preferably 3 μm. By using micron-sized starch, talc powder, aluminum hydroxide, and carbon powder, they can come into more thorough contact with water during stirring, easily forming a relatively thin separating agent. This avoids the problems of high cost associated with using nano-sized materials and poor adhesion and separating effects caused by using millimeter-sized materials.

[0064] In summary, the separation agent preparation method provided by this invention involves adding starch to water in multiple batches and stirring until homogeneous. After gelatinization, a first product is obtained. This method ensures more thorough gelatinization of the starch, and the resulting first product is a semi-transparent colloidal solution with a certain degree of viscosity, which hinders the sedimentation of subsequently added protective powder and aluminum hydroxide. Talc is selected as the protective powder because it is stable, not easily decomposed, and can be used alone as a separation layer. Carbon powder is selected as the protective powder, and its combined action with talc helps improve the separation effect and reduce the friction coefficient of the separation layer. The protective powder and aluminum hydroxide are added to the first product in multiple batches and stirred until homogeneous to obtain the separation agent. The method utilizes water, starch, carbon powder, and talc... Both powder and aluminum hydroxide are relatively inexpensive materials, ensuring a low preparation cost for the release agent. When using the release agent, it is only necessary to spray it onto the high-temperature surface to be processed. The water in the release agent evaporates first, and the gelatinized starch, due to the obstruction of the flame retardant aluminum hydroxide, will not burn directly but will char, thus fixing the protective powder in the release agent onto the surface to be processed, forming the first release layer. Subsequently, aluminum hydroxide decomposes into small aluminum oxide particles and water under high temperature. The water evaporates upon heating, and the small aluminum oxide particles are fixed on the material surface, forming the second release layer, further enhancing the release effect. This multi-layer release ensures the release effect, and the release layer is less likely to damage the workpiece or processing machine, reducing subsequent maintenance costs.

[0065] This invention also provides a release agent, which is prepared based on the above preparation method. The release agent can be composed of only a few common and inexpensive materials, and the required cost is low. Moreover, the release agent is convenient and safe to use, with low risk. At the same time, it is not likely to damage the workpiece and the processing machine, reducing the subsequent maintenance costs. For details, please refer to the beneficial effects of the above preparation method, which will not be repeated here.

[0066] This invention also includes a method for using a release agent, wherein a release layer is prepared using the release agent described above, such as... Figure 2 As shown, the steps include:

[0067] S202, compressed gas is introduced into the isolating agent provided in the embodiment of the present invention to obtain a uniformly mixed suspension;

[0068] S204 involves spraying a suspension onto a high-temperature surface to be processed, forming an isolation layer.

[0069] In the process of using the release agent provided in the embodiments of the present invention, compressed gas is introduced into the release agent provided in the embodiments of the present invention to obtain a uniformly mixed suspension, which avoids the sedimentation of particles in the release agent and ensures the effectiveness of the release agent. The suspension is sprayed onto the high-temperature surface to be processed to form a release layer, which realizes multi-layer isolation and reduces the danger of use. For details, please refer to the beneficial effects of the above preparation method, which will not be repeated here.

[0070] In this embodiment of the invention, the pressure range of the compressed gas is 7-10 bar, preferably 8 bar.

[0071] The working principle or usage method of this invention will be further explained below with reference to a specific example:

[0072] An isolating agent is prepared using a method for preparing an isolating agent provided in an embodiment of the present invention. The specific steps include:

[0073] S301. Pour 6.7L of purified water into a 15L steel container and heat the water to the first preset temperature. Using a spoon, add 1kg of starch with a particle size range of 2-10μm in 20 portions to the water and stir evenly. Do not spill the starch to prevent dust explosion. After all the starch has been added to the water, continue stirring for 10 minutes. After the starch is completely gelatinized, stop heating to obtain the first product.

[0074] S303, using a spoon, add 0.65 kg of carbon powder with a particle size range of 2-5 μm in 10 portions to the first product at the second preset temperature and stir evenly. Do not scatter the powder to prevent dust explosion, and obtain the fourth product.

[0075] S305, using a spoon, add 0.65 kg of talc powder with a particle size range of 5-10 μm in 10 portions to the fourth product at the second preset temperature and stir evenly. Do not scatter the powder to prevent dust explosion, and obtain the fifth product.

[0076] S307: Using a spoon, add 1 kg of aluminum hydroxide with a particle size range of 3-5 μm in 20 portions to the fifth product at the second preset temperature and stir evenly. Do not spill to prevent dust explosion. Obtain the release agent and store it in a vacuum environment.

[0077] The method of using a release agent provided in this embodiment of the invention forms a release layer on the surface of an aluminum profile by using the release agent prepared in this example. The specific steps include:

[0078] S401, a compressed gas with a pressure of 7-10 bar, preferably 8 bar, is repeatedly introduced into the separating agent prepared in this example. The interval between two consecutive introductions of compressed gas is 3-8 min, preferably 5 min, and the time for each introduction of compressed gas is 20-30 s, finally obtaining a uniformly mixed suspension.

[0079] S403 sprays the suspension onto the end face of the high-temperature aluminum alloy casting rod to be processed, forming an isolation layer.

[0080] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "installation" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a release agent that forms an isolation layer between an aluminum profile and an extruder, characterized in that, Including the following steps: Starch is added to water at a first preset temperature and stirred until it is gelatinized to obtain the first product; The protective powder and aluminum hydroxide are added to the first product at a second preset temperature and stirred evenly to obtain the release agent; wherein the second preset temperature is lower than the first preset temperature; wherein, by weight, the raw materials for preparing the release agent include: 8-12 parts of starch, 10-16 parts of protective powder, 8-12 parts of aluminum hydroxide, and 60-74 parts of water; the protective powder includes: 10-16 parts of talc, or 5-8 parts of talc and 5-8 parts of carbon powder.

2. The preparation method according to claim 1, characterized in that, The step of adding starch to water at a first preset temperature and stirring until homogeneous, and then gelatinizing to obtain the first product includes: The starch is added to water at the first preset temperature in multiple portions and stirred evenly. After gelatinization, the first product is obtained.

3. The preparation method according to claim 1, characterized in that, The step of adding protective powder and aluminum hydroxide to the first product at a second preset temperature and stirring evenly to obtain the separating agent includes: One of the protective powder and aluminum hydroxide is added to the first product at a second preset temperature in multiple portions and stirred evenly to obtain the second product; the other of the two is added to the second product at a second preset temperature in multiple portions and stirred evenly to obtain the separating agent.

4. The preparation method according to claim 1, characterized in that, The first preset temperature range is 58-64℃; And / or, the temperature range of the second preset temperature is 15-35℃; And / or, the release agent is stored in a vacuum environment.

5. The preparation method according to claim 1, characterized in that, When the protective powder is talc; the step of adding the protective powder and aluminum hydroxide to the first product at the second preset temperature and stirring evenly to obtain the release agent includes: adding one of the talc powder and the aluminum hydroxide to the first product at the second preset temperature in multiple batches and stirring evenly to obtain the third product; adding the other of the two to the third product at the second preset temperature in multiple batches and stirring evenly to obtain the release agent. Alternatively, when the protective powder is talc and carbon powder; the step of adding the protective powder and aluminum hydroxide to the first product at a second preset temperature and stirring evenly to obtain the release agent includes: adding one of the three—carbon powder, talc, and aluminum hydroxide—to the first product at the second preset temperature in multiple portions and stirring evenly to obtain a fourth product; adding another of the three to the fourth product at the second preset temperature in multiple portions and stirring evenly to obtain a fifth product; and adding the last of the three to the fifth product at the second preset temperature in multiple portions and stirring evenly to obtain the release agent.

6. The preparation method according to claim 5, characterized in that, The starch has a particle size range of 2-10 μm; And / or, the particle size range of the talc is 5-10 μm; And / or, the particle size range of the aluminum hydroxide is 3-5 μm; And / or, the particle size range of the toner is 2-5 μm.

7. A release agent for forming an isolation layer between an aluminum profile and an extruder, characterized in that, The separating agent is prepared by the preparation method according to any one of claims 1-6.

8. A method of using a release agent to form an isolation layer between an aluminum profile and an extruder, characterized in that, Including the following steps: Compressed gas is introduced into the separating agent according to claim 7 to obtain a uniformly mixed suspension; The suspension is sprayed onto the high-temperature surface to be processed to form an isolation layer.

9. The method of use according to claim 8, characterized in that, The pressure range of the compressed gas is 7-10 bar.

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