WO2021114428A1 - Release agent production control system - Google Patents

Abstract

The present invention discloses a release agent production control system, comprising: a first reaction device (1), a second reaction device (2), a cooling device (3) and a discharge device (4); wherein the first reaction device (1) and the second reaction device (2) can effectively control the foam generated by the release agent during the production process, and eliminate the foam generated during stirring by arranging a defoaming stirring paddle to ensure the vacuum degree in the production process, inhibit the formation of foam, in addition, a defoaming filter screen is added when discharging to further eliminate the foam, the resulting release agent has less liquid foam content, which effectively reduces the release agent's dependence on chemical defoamers, and avoids the environmental pollution of the chemical defoamers and the impact on rubber sheet performance in use, at the same time, the product performance and storage stability of the release agent liquid are improved.

Description

A release agent production control system Technical field

The invention relates to the field of release agent production, in particular to a release agent production control system.

Background technique

In the process of rubber processing, due to its unique self-adhesiveness, it brings a lot of inconveniences to large-scale industrial production, especially to the handling and reprocessing of rubber compounds and plastic compounds. In order to reduce troubles, rubber product manufacturers often apply a layer on the corresponding film before the final compound is made into a finished product, such as before handling and storage of the compound, before extrusion, extrusion and hot mixing. Release agent to prevent the films from sticking to each other.

The mechanism of the release agent is to use the large difference in the mutual solubility between the release agent itself and the rubber. When the rubber film is impregnated with the release agent, a thin isolation layer is formed between the rubber film to block or slow down the gap between the film and the film. Adhere to each other to facilitate the process operation.

The material used as a rubber film release agent must meet the following requirements: a certain difference in solubility coefficient from rubber; high safety, non-toxicity, no harm to human health, and no pollution to the environment; it can form an isolation layer on the surface of the rubber film, In order to have a good isolation effect; the negative impact on the physical and mechanical properties of rubber products should be small; the process operation is convenient.

Currently widely used release agents mainly include powder, paste and liquid in three forms.

Powder release agents include: talc powder Mg ₃ [Si ₄ O ₁₀ ](OH) ₂ , heavy calcium carbonate and metal soaps (specifically zinc stearate, calcium stearate and magnesium stearate). The use of powder release agent will cause the problem of dust flying. The automatic powder feeding device can reduce dust pollution, but this problem cannot be completely solved. A considerable amount of powder release agent cannot be firmly adhered to the rubber. Pollution and dust will be generated in the subsequent production process;

Paste release agents are dispersions containing talc, heavy calcium carbonate, white carbon black and the above metal soaps. The industrial grade products of these release agents are pastes. After adding water, they must be stirred to prevent the dispersion from forming deposits. Things. Metal soap dispersions that do not contain emulsifiers will generally form deposits quickly, while dispersions containing solids will form deposits in the equipment.

Liquid release agents are usually soaps, various surfactants and detergent liquid release agents, which have excellent wettability, but liquid release agents will produce a large amount of foam during the production process, which affects its storage and use performance.

Foam elimination methods are mainly divided into two categories: physical defoaming and chemical defoaming. At present, the most commonly used method is to add chemical defoamer to eliminate foam in the process of producing release agent. The chemical defoamer system is highly targeted. Different formulas need to use different defoamers, and the selection needs to rely on empirical values and a large number of experiments. , The process is complicated. At present, there are many types of release agents and defoamers on the market. Many manufacturers who have used release agents have concerns. They do not know which release agent and defoamer to choose to solve the foam problem. The careless choice of defoamer is not only defoaming The effect of the agent is not good, the defoaming speed is slow, and the foam suppression time is short. It will also affect the basic performance of the product, causing the release agent to float oil and affect metal cutting. Therefore, it is very important to reduce the amount of foam generated in the production process of the release agent by physical defoaming, and to reduce the dependence of the release agent on the chemical defoaming agent, but there are few effective methods for physical defoaming.

Summary of the invention

In order to solve the above technical problems, the present invention provides a release agent production control system, the specific content is as follows:

Including: a first reaction device, a second reaction device, a cooling device and a discharging device;

The first reaction device includes: a reaction tank A, the reaction tank A is externally equipped with a heating jacket A, the top center of the reaction tank A is provided with a stirrer A, and both sides of the top end are respectively provided with a feeding port with a sealing valve A and Connecting pipe with on-off valve A, the other end of the connecting pipe is connected to the vacuum pump; the heating jacket A has circulating hot water inside, the lower left side is the hot water inlet pipe with the water inlet valve A, and the upper right side is the outlet with water The hot water outlet pipe of valve A; the agitator A is driven by a motor and includes a stirring rod A. The end of the stirring rod A is connected to a stirring paddle A, and a defoaming paddle A is connected near the liquid level of the isolating agent; the height of the defoaming paddle A Adjustable, it is located in the reaction tank A near the liquid surface of the isolating agent and does not expose the liquid surface when the stirring is turned on; the bottom end of the reaction tank A is provided with a discharge pipe with a discharge valve A, and the discharge pipe is connected to the pump A , Pump A delivers the release agent to the grinder; the release agent after being ground by the grinder enters the second reaction device;

The second reaction device includes: a reaction tank B, the reaction tank B is externally equipped with a heating jacket B, a stirrer B is arranged at the center of the top of the reaction tank B, and a feed valve with a feed valve B is provided on both sides of the top. The pipe, the feeding port with the sealing valve B and the connecting pipe with the switch valve B, the other end of the connecting pipe is connected to the vacuum pump; the heating jacket B is filled with circulating hot water, and the lower left side is the heat with the water inlet valve B The water inlet pipe, the upper right side is the hot water outlet pipe with the outlet valve B; the agitator B is driven by a motor and includes a stirring rod B. The end of the stirring rod B is connected to the stirring paddle B, and the end of the stirring rod B is connected to the liquid level of the isolating agent. The bubble paddle B; the height of the defoaming paddle B is adjustable, and is located in the reaction tank B near the liquid surface of the isolating agent and does not expose the liquid surface when the stirring is turned on; the bottom end of the reaction tank B is provided with a discharge valve The discharge pipe of B, the discharge pipe is connected to pump B, and pump B transports the isolating agent to the cooling device;

The cooling device includes: a reaction tank C, the reaction tank C is externally equipped with a cooling jacket, the top center of the reaction tank C is provided with a stirrer C, and both sides of the top are respectively provided with a feed pipe with a feed valve C and a belt There is a connecting pipe with an on-off valve C, and the other end of the connecting pipe is connected to a vacuum pump; the cooling jacket C is filled with circulating cooling water, the lower left side is a cooling water inlet pipe with an inlet valve C, and the upper right side is an outlet valve The cooling water outlet pipe of C; the agitator C is driven by a motor and includes a stirring rod C, the end of the stirring rod C is connected with a stirring paddle C; the bottom end of the reaction tank C is provided with a discharge pipe with a discharge valve C, The material pipe is connected to the discharge device;

The discharging device includes a bucket and a defoaming filter screen arranged at the entrance of the bucket.

Preferably, the paddles of the defoaming paddle A and the defoaming paddle B are perpendicular to the liquid surface, and the paddles are provided with hollow mesh holes; the hollow mesh holes on the paddles are in the order of large-medium-small-large-medium- Arranged in small loops. Through the mesh with decreasing pore size, the foam generated during stirring can be sheared and broken.

Preferably, the defoaming filter includes a first filter, a second filter, and a third filter arranged from top to bottom, and the first filter mesh has a mesh diameter>the second filter mesh has a mesh diameter>the third filter mesh. The aperture of the filter mesh. Through the mesh with decreasing pore size, the foam generated during stirring is further sheared and broken.

The release agent production control device prepares the release agent, including the following steps:

S1. Open the sealing valve A on the feeding port of the first reaction device, add 70 parts by weight of water to the reaction tank A, and at the same time turn on the stirring, heat to 60-70°C and then add 3 parts by weight of polyvinyl alcohol, 2 parts of carboxymethyl cellulose and 3 parts of glycerol monostearate. After stirring for 15 minutes, add 2 parts of sodium alginate by weight, close the sealing valve A on the feeding port, open the switch valve A, vacuum, and stir for 30 minutes ；

S2. Open the discharge valve A at the bottom of the first reaction device, close the switch valve A, stop vacuuming, and transfer the isolating agent in the reaction tank A to the grinder through the pump A, and the grinder will transfer the colloid produced during the reaction of the isolating agent The material is uniformly ground;

S3. After the grinding is completed, open the feed valve B of the second reaction device, and after the release agent is delivered to the second reaction device, close the feed valve B and turn on the stirring at the same time. After the reaction tank B is heated to 70-80°C, open On the sealing valve B on the feeding port, add 20 parts by weight of sodium stearate, close the sealing valve B, open the on-off valve B, vacuum, and stir at constant temperature for 1 hour;

S4. Open the discharge valve B at the bottom of the second reaction device, then close the switch valve B, stop vacuuming, open the feed valve C of the cooling device, and deliver the isolating agent in the second reaction device to the reaction tank C through the pump B. After delivery, close the feed valve C, open the on-off valve C, draw a vacuum, and slowly stir to cool the isolating agent to 30-40°C;

S5. Open the discharge valve C at the bottom of the cooling device and close the switch valve C, stop vacuuming, and discharge the isolating agent to the discharging device. After the isolating agent is discharged, remove the defoaming filter on the discharging device for cleaning Clean, sealed and stored in the barrel.

The beneficial technical effects of the present invention:

1. By setting the anti-foaming stirring paddle to eliminate the foam produced during stirring, the foam produced by the stirring during the production process of the release agent can be effectively controlled;

2. Vacuuming during the reaction can ensure the vacuum in the production process and inhibit the formation of foam;

3. In the cooling process after the reaction, continue to maintain the vacuum state, which can further eliminate the residual foam;

4. When discharging, add a defoaming filter to further eliminate foam. The defoaming filter with three-layer filter design is adopted. Through the mesh size from large to small, the residual foam in the release agent can be fully sheared and broken.

5. The synthesis reaction of the release agent is divided into two stages. In the first stage, polyvinyl alcohol, carboxymethyl cellulose and glycerol monostearate are added. After stirring for 15 minutes, sodium alginate is added to ensure that the raw materials are fully mixed. Uniformity, equipped with a grinder after the first reaction device, which can grind the gel material produced during the mixing reaction process uniformly to ensure the uniformity of the release agent and avoid agglomeration.

In summary, the present invention can effectively control the foam produced in the production process through physical defoaming, is environmentally friendly and has no pollution, and the obtained release agent has a low foam content, effectively reduces the release agent’s dependence on chemical defoamers, and avoids chemical The pollution of the defoamer to the environment and the impact on the performance of the rubber sheet during use not only reduces the production cost but also improves the product performance and storage stability of the release agent liquid.

Description of the drawings

Figure 1 is a schematic diagram of the production control device of the present invention;

Figure 2 is a top view of the defoaming paddle;

Figure 3 is a schematic diagram of the mesh of the defoaming paddle;

Figure 4 is a schematic diagram of the structure of the defoaming filter;

Fig. 5 is a schematic diagram of the mesh pore size of each layer of the defoaming filter of Fig. 4.

Description of reference signs:

1. The first reaction device, 2. The second reaction device, 3. The cooling device, 4. The discharging device;

11. Reaction tank A, 12, sealing valve A, 13, agitator A, 14, heating jacket A, 15, on-off valve A, 16, discharge valve A, 17, connecting pump A, 18, grinder;

131. Defoaming paddle A, 132, stirring rod A, 133, stirring paddle A;

21. Reaction tank B, 22, sealing valve B, 23, stirrer B, 24, heating jacket B, 25, on-off valve B, 26, discharge valve B, 27, connecting pump B, 28, feed valve B;

231. Defoaming paddle A, 232, stirring rod A, 233, stirring paddle A;

01. No. 1 paddle, No. 02, No. 2 paddle, No. 03, No. 3 paddle, No. 04, No. 4 paddle, No. 05, No. 5 paddle, No. 06, No. 6 paddle, 07, Stirring rod;

31. Reaction tank C, 32, stirrer C, 33, cooling jacket, 34, switch valve C, 35, discharge valve C, 36, feed valve;

331, water inlet valve C1,332, water outlet valve C2;

41. Defoaming filter, 42, material barrel;

411. The first filter, 412, the second filter, 413, and the third filter.

Detailed ways

The specific implementation of the present invention will be described below with reference to the drawings and embodiments:

It should be noted that the structure, ratio, size, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not intended to limit the implementation of the present invention. The limiting conditions, any structural modification, proportional relationship change or size adjustment, without affecting the effects and objectives that can be achieved by the present invention, should fall within the scope of the technical content disclosed in the present invention. Within range.

At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for ease of description, not to limit the text. The scope of implementation of the invention, the change or adjustment of its relative relationship, shall be regarded as the scope of implementation of the invention without substantial changes to the technical content.

Examples:

A release agent production control device, comprising: a first reaction device 1, a second reaction device 2, a cooling device 3 and a discharging device 4;

The first reaction device 1 includes: a reaction tank A11, the reaction tank A11 is provided with a heating jacket A14, a stirrer A13 is provided at the center of the top of the reaction tank A11, and a feeding port with a sealing valve A12 is provided on both sides of the top. And the connecting pipe with the switch valve A15, the other end of the connecting pipe is connected to the vacuum pump; the heating jacket A14 has circulating hot water inside, the lower left side is the hot water inlet pipe with the water inlet valve A141, and the upper right side is with The hot water outlet pipe of the water outlet valve A142; the agitator A13 is driven by a motor and includes a stirring rod A132. The end of the stirring rod A132 is connected with a stirring paddle A133, and a defoaming paddle A131 is connected near the liquid surface of the isolating agent; the defoaming paddle A131 The height is adjustable, and it is located in the reaction tank A11 near the liquid surface of the isolating agent and does not expose the liquid surface when the stirring is turned on; the bottom end of the reaction tank A11 is provided with a discharge pipe with a discharge valve A16, and the discharge pipe is connected to the pump A17, the pump A17 delivers the release agent to the grinder 18; the release agent after being ground by the grinder 18 enters the second reaction device 2;

The second reaction device 2 includes: a reaction tank B21, the reaction tank B21 is equipped with a heating jacket B24, a stirrer B23 is provided at the center of the top of the reaction tank B21, and inlets with feed valves B28 are respectively provided on both sides of the top. The material pipe, the feeding port with the sealing valve B22 and the connecting pipe with the switch valve B25, the other end of the connecting pipe is connected to the vacuum pump; the heating jacket B24 is filled with circulating hot water, and the lower left side is the one with the water inlet valve B241 The hot water inlet pipe, the upper right side is the hot water outlet pipe with the outlet valve B242; the agitator B23 is driven by a motor, including the stirring rod B232, the end of the stirring rod B232 is connected to the stirring paddle B233, and is connected near the liquid level of the isolating agent Defoaming paddle B231; The height of the defoaming paddle B231 is adjustable and is located in the reaction tank B21 close to the liquid surface of the release agent and does not expose the liquid surface when the stirring is turned on; the bottom end of the reaction tank B21 is provided with a belt discharge The discharge pipe of the valve B26 is connected to the pump B27, and the pump B27 delivers the isolating agent to the cooling device 3;

The cooling device 3 includes: a reaction tank C31, the reaction tank C31 is externally provided with a cooling jacket 33, a stirrer C32 is provided at the center of the top of the reaction tank C31, and a feed pipe with a feed valve C36 is provided on both sides of the top. And the connecting pipe with the switch valve C34, the other end of the connecting pipe is connected to the vacuum pump; the cooling jacket C33 is filled with circulating cooling water, the lower left side is the cooling water inlet pipe with the water inlet valve C331, and the upper right side is the cooling water inlet pipe with water inlet valve C331. The cooling water outlet pipe of the outlet valve C332; the agitator C32 is driven by a motor and includes a stirring rod C321, the end of the stirring rod C321 is connected with a stirring paddle C322; the bottom end of the reaction tank C31 is provided with a discharge pipe with a discharge valve C35 , The discharge pipe is connected to the discharge device 4;

The discharging device 4 includes a bucket 42 and a defoaming filter 41 provided at the entrance of the bucket 42.

Preferably, the paddles of the defoaming paddle A131 and the defoaming paddle B231 are perpendicular to the liquid surface, and the paddles are provided with hollow mesh holes.

Preferably, the apertures of the hollow meshes on the paddles are arranged in a cycle of large-medium-small-large-medium-small.

Preferably, the defoaming filter 41 includes a first filter 411, a second filter 412, and a third filter 413 arranged from top to bottom, and the first filter 411 has a mesh size> the second filter 412 Mesh diameter> mesh diameter of the third filter screen 413.

The release agent production control device prepares the release agent, including the following steps:

S1. Open the sealing valve A12 on the feeding port of the first reaction device 1, add 70 parts by weight of water to the reaction tank A11, and at the same time turn on the stirring, heat to 60-70°C and then add 3 parts by weight of polyvinyl alcohol in sequence , 2 parts of carboxymethyl cellulose and 3 parts of glycerol monostearate, add 2 parts of sodium alginate by weight after stirring for 15 minutes, close the sealing valve A12 on the feeding port, open the on-off valve A15, vacuum, and stir for 30 minute;

S2. Open the discharge valve A16 at the bottom of the first reaction device 1, close the switch valve A15, stop vacuuming, and transfer the isolating agent in the reaction tank A11 to the grinder 18 through the pump A17, and the grinder 18 will react the isolating agent in the process The colloidal substance produced is evenly ground;

S3. After the grinding is completed, open the feed valve B28 of the second reaction device 2 to deliver the isolating agent to the second reaction device 2 and close the feed valve B28 while turning on the stirring. After the reaction tank B21 is heated to 70-80°C , Open the sealing valve B22 on the feeding port, add 20 parts by weight of sodium stearate, close the sealing valve B22, open the switch valve B25, vacuum, and stir at constant temperature for 1 hour;

S4. Open the discharge valve B26 at the bottom of the second reaction device 2 and then close the switch valve B25, stop vacuuming, open the feed valve C36 of the cooling device 3, and deliver the isolating agent in the second reaction device 2 to the reaction through the pump B27 Tank C31, after delivery, close the feed valve C36, open the on-off valve C34, evacuate, and slowly stir to cool the isolating agent to 30-40°C;

S5. Open the discharge valve C35 at the bottom of the cooling device 3 and then close the switch valve C34, stop vacuuming, and discharge the isolating agent to the discharging device 4. After the isolating agent is discharged, the defoaming filter on the discharging device 4 41 is removed and cleaned, and the material barrel 42 is sealed and stored.

Take the release agent obtained in the example and compare it with the release agent obtained by conventional stirring. In the case of using the same formula, the release agent obtained in the example has very little foam content, while the release agent of the control example has a higher foam content; its sealing The storage drums are as follows:

Table 1 Comparison table of isolation agent storage drums

Storage time	Example	Control example
1 month	No drum phenomenon		Slight drum
2 months	No drum phenomenon	Drum barrel is obvious
3 months	No drum phenomenon	The drum needs to be deflated seriously

As can be seen from the above table, the liquid release agent obtained by the ordinary production process, the foam inside the liquid constantly rises and breaks during the storage process, resulting in the drum barrel phenomenon. With the increase of storage time, the drum barrel phenomenon becomes more and more serious and must be deflated In order to ensure the safety of storage, the liquid isolating agent in the embodiment adopts effective defoaming measures during the production process, and there is no large amount of bubbles in the liquid, so the storage is stable and the safety is high.

The above-mentioned embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, etc. made without departing from the spirit and principle of the present invention Simplified, all should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (4)

1. A release agent production control device, which is characterized by comprising: a first reaction device (1), a second reaction device (2), a cooling device (3) and a discharging device (4);

   The first reaction device (1) includes: a reaction tank A (11), the reaction tank A (11) is externally equipped with a heating jacket A (14), and the top center of the reaction tank A (11) is provided with a stirrer A ( 13), the two sides of the top are respectively provided with a feeding port with a sealing valve A (12) and a connecting pipe with a switch valve A (15), and the other end of the connecting pipe is connected to a vacuum pump; the heating jacket A (14) has an internal connection Circulating hot water, the lower left side is the hot water inlet pipe with water inlet valve A (141), the upper right side is the hot water outlet pipe with water outlet valve A (142); the agitator A (13) passes Driven by a motor, including stirring rod A (132), the end of stirring rod A (132) is connected with stirring paddle A (133), and the antifoaming paddle A (131) is connected near the liquid level of the release agent; The height is adjustable, and it is located in the reaction tank A (11) close to the liquid surface of the isolating agent and does not expose the liquid surface when the stirring is turned on; the bottom end of the reaction tank A (11) is provided with a discharge valve A (16) The discharge pipe is connected to the pump A (17), and the pump A (17) transports the isolating agent to the grinder (18); the isolating agent after being ground by the grinder (18) enters the second reaction device (2);

   The second reaction device (2) includes: a reaction tank B (21), the reaction tank B (21) is provided with a heating jacket B (24), and the top center of the reaction tank B (21) is provided with a stirrer B ( 23). Both sides of the top are provided with a feeding pipe with a feeding valve B (28), a feeding port with a sealing valve B (22), and a connecting pipe with a switch valve B (25). The connecting pipes are separate One end is connected to a vacuum pump; the heating jacket B (24) is filled with circulating hot water, the lower left side is the hot water inlet pipe with the water inlet valve B (241), and the upper right side is the water outlet valve B (242) Hot water outlet pipe; the agitator B (23) is driven by a motor, including a stirring rod B (232), the end of the stirring rod B (232) is connected with a stirring paddle B (233), and a defoaming paddle is connected near the liquid level of the isolating agent B (231); the height of the defoaming paddle B (231) is adjustable, and is located in the reaction tank B (21) close to the liquid surface of the isolating agent and does not expose the liquid surface when the stirring is turned on; the reaction tank B ( 21) The bottom end is provided with a discharge pipe with a discharge valve B (26), the discharge pipe is connected to pump B (27), and pump B (27) delivers the isolating agent to the cooling device (3);

   The cooling device (3) includes a reaction tank C (31), the reaction tank C (31) is externally provided with a cooling jacket (33), and the top center of the reaction tank C (31) is provided with a stirrer C (32), The two sides of the top are respectively provided with a feeding pipe with a feeding valve C (36) and a connecting pipe with a switch valve C (34), and the other end of the connecting pipe is connected to a vacuum pump; the cooling jacket C (33) is internally circulating Cooling water, the lower left side is the cooling water inlet pipe with water inlet valve C (331), and the upper right side is the cooling water outlet pipe with water outlet valve C (332); the agitator C (32) passes through the motor Drive, including a stirring rod C (321), the end of the stirring rod C (321) is connected to a stirring paddle C (322); the bottom end of the reaction tank C (31) is provided with a discharge pipe with a discharge valve C (35), The discharge pipe is connected to the discharge device (4);

   The discharging device (4) includes a bucket (42) and a defoaming filter screen (41) arranged at the entrance of the bucket (42).
2. A release agent production control device according to claim 1, wherein the paddles of the defoaming paddle A (131) and the defoaming paddle B (231) are perpendicular to the liquid surface, and the paddles are provided with a hollow mesh Holes, the apertures of the hollow meshes on the paddles are arranged in a cycle of large-medium-small-large-medium-small.
3. A release agent production control device according to claim 1, wherein the defoaming filter screen (41) comprises a first filter screen (411) and a second filter screen (412) arranged from top to bottom. And the third filter screen (413), and the first filter screen (411) mesh size>the second filter screen (412) mesh size>the third filter screen (413) mesh size.
4. The method for preparing a release agent by a release agent production control device according to claim 1, characterized in that it comprises the following steps:

   S1. Open the sealing valve A (12) on the feeding port of the first reaction device (1), add 70 parts by weight of water to the reaction tank A (11), and at the same time turn on the stirring, heat to 60-70°C and then add sequentially 3 parts by weight of polyvinyl alcohol, 2 parts of carboxymethyl cellulose and 3 parts of glycerol monostearate. After stirring for 15 minutes, add 2 parts of sodium alginate by weight, and close the sealing valve A (12) on the feeding port. , Open on-off valve A (15), vacuum, and stir for 30 minutes;

   S2. Open the discharge valve A (16) at the bottom of the first reaction device (1), close the switch valve A (15), stop vacuuming, and deliver the isolating agent in the reaction tank A (11) through the pump A (17) To the grinder (18), the grinder (18) grinds the colloidal substances produced during the reaction of the release agent evenly;

   S3. After the grinding is completed, open the feed valve B (28) of the second reaction device (2), deliver the isolating agent to the second reaction device (2), close the feed valve B (28), and turn on the stirring at the same time. After the reaction tank B (21) is heated to 70-80°C, open the sealing valve B (22) on the feeding port, add 20 parts of sodium stearate by weight, close the sealing valve B (22), and open the switch valve B (25 ), vacuum and stir at constant temperature for 1 hour;

   S4. Open the discharge valve B (26) at the bottom of the second reaction device (2), close the switch valve B (25), stop vacuuming, open the feed valve C (36) of the cooling device (3), and pass the pump B (27) Transport the isolating agent in the second reaction device (2) to the reaction tank C (31), close the feed valve C (36), open the on-off valve C (34), vacuum, and slowly stir after the delivery is complete , Cool the release agent to 30-40℃;

   S5. Open the discharge valve C (35) at the bottom of the cooling device (3) and then close the switch valve C (34), stop vacuuming, and discharge the isolating agent to the discharging device (4). After the isolating agent is discharged, remove The defoaming filter (41) on the discharging device (4) is removed and cleaned, and the material bucket (42) is sealed and stored.

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