Device for synthesizing high molecular weight polyacrylate adhesive

Abstract

The utility model belongs to the technical field of polyacrylate adhesives, and particularly discloses a device for synthesizing a high molecular weight polyacrylate adhesive, which comprises a kettle body, a stirring shaft cooling system, a polymerization kettle cooling system and a heating and cooling integrated system, the kettle body and stirring shaft cooling system comprises a polymerization kettle body, a stirring paddle arranged in the polymerization kettle body and a stirring shaft temperature control system arranged above the polymerization kettle body, the polymerization kettle cooling system and the heating and cooling integrated system are both arranged outside the polymerization kettle body, the polymerization kettle cooling system is used for cooling the polymerization kettle body, and the heating and cooling integrated system is used for heating and cooling the polymerization kettle body. And the heating and cooling integrated system is used for heating or cooling the polymerization kettle body. The utility model provides a device for synthesizing a high-molecular-weight polyacrylate adhesive, so that the reaction process is more stable, the molecular weight of synthesized polyacrylate is high, the molecular weight distribution is narrow, and a polymerization method is simpler to implement.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyacrylate adhesive technical field, especially relates to a device of synthetic high molecular weight polyacrylate adhesive. BACKGROUND

[0002] Polyacrylate pressure sensitive adhesive is widely used in pressure sensitive adhesive tape, label paper and the lamination between various optical films due to its excellent pressure sensitive adhesive properties and good weather resistance. At the same time, with the rapid popularization of display made of optical film in the application scene of large changeable use environment such as automobile, the requirement of pressure sensitive adhesive is gradually improved, for example: in order to realize that optical film does not appear blistering, warping, shrinkage and bending or even falling off when used under high temperature and high humidity, and has the anti-leakage property of not leaking light under high temperature or high temperature and high humidity, it needs to have excellent weather resistance. In addition, under certain special working conditions, such as when the optical film is laminated on the liquid crystal panel, if the lamination position deviates, the optical film needs to be peeled off from the liquid crystal panel, and the lamination surface will not be contaminated during peeling.

[0003] As a kind of pressure sensitive adhesive for optical film that can meet the above performance requirements, the preparation method is as follows: high molecular weight polyacrylate polymer is blended with a certain amount of medium and low molecular weight polyacrylate polymer, then crosslinking agent is added for crosslinking, and some other additives (such as silane coupling agent) are added. The pressure sensitive adhesive mainly crosslinks the high molecular weight polyacrylate polymer to obtain sufficient cohesive force, so that it does not blister and fall off under high temperature and high humidity, at the same time, the medium and low molecular weight polyacrylate polymer makes the component device not leak light.

[0004] The synthesis process of low molecular weight polyacrylate polymer is relatively mature, and there are more marketable products in the domestic market. However, there are few reports on the synthesis method and equipment of high molecular weight pressure-sensitive adhesive for polarizing sheet. The traditional synthesis method of polyacrylate optical pressure-sensitive adhesive reported by Japan and Korea, such as patent JP 5347115B2 and patent CN 1275984C, mainly uses toluene, ethyl acetate and their mixed solutions with different proportions as solvent. In order to control the temperature, the synthesis temperature is mostly above the boiling point of the solvent, and the reflux reaction is carried out by using the heat taken away by the solvent boiling. The molecular weight of the polyacrylate synthesized by this method is small, the weather resistance is poor, and the energy consumption is high. In patent CN 1275984C, the critical carbon dioxide is used as the solvent for synthesis reaction. The molecular weight of the polyacrylate obtained by this method is high, and the molecular weight distribution is narrow. However, the synthesis conditions of this method are harsh, the danger is high (the pressure of the reaction system needs to be increased to 6-15 MPa), and the production cost of this method is high. The synthesis of polyacrylate in China is described in patent CN 104293249B, which adjusts the addition method of the initiator, but does not give the molecular weight of the synthesized polyacrylate.

[0005] In addition, the above synthesis of polyacrylate does not describe the related amplification equipment, but only explores the pure synthesis method. However, for free radical polymerization, especially for polymerization of high molecular weight (Mw>1.5 million) polyacrylate, due to the high viscosity of the reaction system, heat dissipation is difficult, and the polymerization process is prone to temperature rise, resulting in small molecular weight of the synthesized polyacrylate, wide molecular weight distribution, and even explosion and gelation and other adverse conditions.

[0006] In the laboratory stage, due to the small amount of material, the released heat is small, and appropriate change of experimental conditions can make the reaction process more stable, and high molecular weight polyacrylate can be synthesized smoothly. In the amplification stage, due to the large amount of material, the heat released during polymerization is large, and the reaction process is difficult to control. The general method is to increase the reaction temperature to the boiling point of ethyl acetate or other mixed solvents, and use the evaporation process of the solvent to take away the reaction heat, but the chain transfer constant of the solvent at high temperature is large, and it is difficult to synthesize high molecular weight, low molecular weight polyacrylate with low molecular weight dispersion.

[0007] When synthesizing high molecular weight polyacrylate, the system viscosity is large, which belongs to high viscosity fluid system. High viscosity fluid will appear climbing rod effect when being stirred, which is one of the performances of high polymer viscoelasticity. For viscous fluid, the liquid surface will be concave due to the action of centrifugal force; unlike viscous fluid, the high molecular liquid in the container is viscoelastic fluid, when the sample is put into the rotor rotation, it does not swing to the vicinity of the container wall due to inertia, but appears around the rod, and the "climbing rod" phenomenon appears along the rod, which is called "weissenberg effect", also known as "package shaft" effect. The reason for this phenomenon is that the high molecular material has elasticity, which is caused by the anisotropic structure formed in the flow of high molecular fluid. Specifically, when rotating, the elastic macromolecular chains will be oriented along the circumferential direction and appear tensile deformation, thereby generating pressure towards the shaft, the closer to the shaft, the greater the shear rate, so the normal stress is greater, and the elastic recovery force of the high molecular chain is greater, so that the liquid is squeezed along the axial direction, and the climbing rod phenomenon appears. The generation of climbing rod effect will seriously affect the uniformity of polymerization reaction of high molecular material and the quality of product. Therefore, when polymerizing high molecular weight polyacrylate, the monomer conversion rate increases continuously with the progress of the reaction, and the system viscosity gradually rises, and the climbing rod phenomenon appears. Since the polymerization reaction of polyacrylate is an exothermic reaction, when the polymer climbs and gathers around the stirring paddle shaft, the reaction heat generated cannot be dissipated in time through the reaction kettle wall, which will cause the polyacrylate to appear gel and other adverse conditions. Therefore, it is necessary to study the stirring paddle suitable for high viscosity fluid system.

[0008] Patent CN 106693745B discloses a multi-blade combined stirring device, although the stirrer greatly strengthens the flow of fluid in the vertical reaction kettle with large height-diameter ratio, which is suitable for stirring fluid system with large viscosity, but when stirring fluid with super high viscosity, there is a dead zone around the fixed ring, which is easy to appear uneven stirring.

[0009] Patent CN 203591753U discloses a frame type stirrer, which combines anchor stirring paddle, frame stirring paddle and screw belt stirring paddle, overcomes the defects of several stirring paddles, combines the radial flow generated by frame stirrer and the axial flow generated by screw belt stirrer, and the flow field presents axial and radial intersection, so that the material can be uniformly mixed. However, when the stirring is actually used in high viscosity fluid system, the middle stirring shaft is easy to appear material climbing rod phenomenon, which leads to poor radial heat transfer of the middle material. When carrying out some exothermic reactions, the middle material is easy to appear gel and caking and other adverse phenomena. Practical new type

[0010] The utility model discloses a synthetic high molecular weight polyacrylate adhesive's device, including cauldron body and stirring shaft cooling system, polymerization kettle cooling system and temperature -raising and temperature -lowering integrated system, cauldron body and stirring shaft cooling system include polymerization kettle body, be located in the stirring paddle of polymerization kettle body and be located the stirring shaft temperature control system above polymerization kettle body, polymerization kettle cooling system and temperature -raising and temperature -lowering integrated system all are located the outside of polymerization kettle body, polymerization kettle cooling system is used to carry out the cooling treatment to polymerization kettle body, temperature -raising and temperature -lowering integrated system is used to carry out the cooling treatment to polymerization kettle body,

[0011] In order to realize the above technical purpose, reach the above technical effect, the utility model discloses a synthetic high molecular weight polyacrylate adhesive's device through following technical scheme realizes:

[0012] The utility model provides a synthetic high molecular weight polyacrylate adhesive's device, including cauldron body and stirring shaft cooling system, polymerization kettle cooling system and temperature -raising and temperature -lowering integrated system, cauldron body and stirring shaft cooling system include polymerization kettle body, be located in the stirring paddle of polymerization kettle body and be located the stirring shaft temperature control system above polymerization kettle body, polymerization kettle cooling system and temperature -raising and temperature -lowering integrated system all are located the outside of polymerization kettle body, polymerization kettle cooling system is used to carry out the cooling treatment to polymerization kettle body, temperature -raising and temperature -lowering integrated system is used to carry out the cooling treatment to polymerization kettle body,

[0013] The stirring paddle includes a stirring shaft and a main screw belt blade arranged on the outer side of the stirring shaft, the stirring shaft is a hollow structure, and a heat transfer medium inflow channel is arranged in the stirring shaft.

[0014] The stirring shaft temperature control system includes a heat exchanger one and a connection pump one connected to the outlet end of the heat exchanger one through a pipeline, the outlet end of the connection pump one is connected to the heat transfer medium inflow channel through a pipeline, the outlet end of the heat transfer medium inflow channel is connected to the inlet end of the heat transfer medium outflow channel, and the outlet end of the heat transfer medium outflow channel is connected to the heat exchanger one.

[0015] The main screw belt blade includes two spiral belts one and two arranged around the stirring shaft and having the same spiral direction, and the spiral belts one and two are centrally symmetric about the axis of the stirring shaft.

[0016] Further, one end of the stirring shaft located outside the polymerization kettle body is provided with a driving mechanism, and the driving mechanism is used to drive the stirring shaft to rotate.

[0017] Further, a stirring shaft heat transfer medium temperature probe is arranged on the pipeline between the heat transfer medium inflow channel and the connection pump one.

[0018] A reaction kettle temperature probe is further arranged on the polymerization kettle body, and the reaction kettle temperature probe is used to monitor the temperature inside the polymerization kettle body.

[0019] Further, the stirring shaft is externally provided with a plurality of connecting pieces, two of which are arranged on the same circumference of the stirring shaft, and the included angle between the two connecting pieces on the same circumference of the stirring shaft is 180°.

[0020] The other ends of the two connecting pieces on the same circumference of the stirring shaft are respectively connected to the helical belt one and the helical belt two.

[0021] Further, the lower ends of the helical belt one and the helical belt two are respectively provided with a lower pressing plate, and the other ends of the two lower pressing plates are connected.

[0022] Further, the included angle between the short side of the lower pressing plate and the horizontal plane is 0-90°.

[0023] The curvature of the long side of the lower pressing plate is consistent with the curvature of the bottom of the polymerization kettle body.

[0024] Further, the polymerization kettle cooling system comprises a heat exchanger two, a heat transfer medium storage tank one and a connecting pump two, the inlet end of the heat exchanger two is connected to the polymerization kettle body through a pipeline, the outlet end of the heat exchanger two is connected to the heat transfer medium storage tank one through a pipeline, the outlet end of the heat transfer medium storage tank one is connected to the connecting pump two through a pipeline, and the outlet end of the connecting pump two is connected to the polymerization kettle body through a pipeline.

[0025] A heat transfer medium backflow control valve one is arranged on the pipeline between the inlet end of the heat exchanger two and the polymerization kettle body.

[0026] A heat transfer medium inlet control valve one is arranged on the pipeline between the outlet end of the connecting pump two and the polymerization kettle body.

[0027] The polymerization kettle cooling system further comprises a heat transfer medium circulation control valve one and a circulation control pipeline one.

[0028] Further, the heat transfer medium circulation control valve one is arranged on the circulation control pipeline one, one end of the circulation control pipeline one is connected to one end of the pipeline between the inlet end of the heat exchanger two and the polymerization kettle body close to the inlet end of the heat exchanger two, and the other end of the circulation control pipeline one is connected to one end of the pipeline between the outlet end of the connecting pump two and the polymerization kettle body close to the outlet end of the connecting pump two.

[0029] Further, the temperature rising and falling integrated system comprises a cold and hot integrated machine, a heat transfer medium storage tank two and a connecting pump three, the inlet end of the cold and hot integrated machine is connected to the polymerization kettle body through a pipeline, the outlet end of the cold and hot integrated machine is connected to the heat transfer medium storage tank two through a pipeline, the outlet end of the heat transfer medium storage tank two is connected to the connecting pump three through a pipeline, and the outlet end of the connecting pump three is connected to the polymerization kettle body through a pipeline.

[0030] A heat transfer medium return control valve two is arranged on a pipeline between the inlet end of the cold-hot integrated machine and the polymerization kettle body.

[0031] A heat transfer medium inlet control valve two is arranged on a pipeline between the outlet end of the connecting pump three and the polymerization kettle body.

[0032] The temperature-raising and temperature-lowering integrated system further comprises a heat transfer medium circulation control valve two and a circulation control pipeline two.

[0033] Further, the heat transfer medium circulation control valve two is arranged on the circulation control pipeline two, one end of the circulation control pipeline two is connected to the inlet end of the cold-hot integrated machine, and the other end of the circulation control pipeline two is connected to one end of the pipeline between the outlet end of the connecting pump three and the polymerization kettle body, which is close to the outlet end of the connecting pump three.

[0034] Compared with the prior art, the utility model has the advantages that:

[0035] 1. The utility model discloses a synthesis device for stably synthesizing high-molecular-weight polyacrylate adhesive, which can make the reaction process more stable, the synthesized polyacrylate has high molecular weight and narrow molecular weight distribution, and the polymerization method is relatively simple to realize.

[0036] 2. In the utility model, the polymerization kettle cooling system is mainly used for rapidly cooling the polymerization kettle, and a large amount of reaction heat is generated during polymerization due to the exothermic reaction of polymerization, so that the polymerization reaction is out of control if the reaction heat is not removed in time, thereby failing to synthesize high-molecular-weight polyacrylate. The kettle body and stirring shaft cooling system are used for polymerization reaction, the kettle body is designed in a jacket type, heat transfer medium can be used to raise and lower the temperature of the polymerization kettle, the stirring shaft is also designed in a jacket type, the heat exchange area of the polymerization kettle is increased, the reaction liquid gathered around the stirring paddle can be rapidly cooled, the main screw belt blades of the stirring paddle are designed in an outward pushing and downward pressing type, the climbing behavior of high-viscosity kettle liquid can be effectively inhibited, and the material can be effectively heat and mass transferred, the temperature-raising and temperature-lowering integrated system is used for raising and lowering the temperature of the polymerization kettle body, provides the required reaction temperature for the initial and later stages of polymerization reaction, and cooperates with the polymerization kettle cooling system and the kettle body and stirring shaft cooling system to maintain the temperature stability in the middle stage of reaction.

[0037] 3、The utility model discloses, through the temperature of polymerizer in the fast adjustment reaction mid -period, can improve the stability of polymerization reaction, the stable reaction system is the key of the synthesis of high molecular weight (150 million is less than or equal to Mw is less than or equal to 260 million), low molecular weight distribution (Mw / Mn is less than or equal to 2);In addition, the stirring paddle of the utility model can effectively take away the polymerization heat generated in the polymerization process. When the polymerized polyacrylate climbs the pole due to the viscosity rise, the material is mainly concentrated near the stirring paddle, the material contact area at the kettle wall drops, and the heat exchange efficiency reduces, at the same time, the free radical polymerization is exothermic reaction, and a large amount of polymer concentrates around the stirring paddle, if the reaction heat generated cannot be quickly led out of the reaction system, then the material will rapidly heat up, and the adverse phenomena such as explosion or gelation occur. Therefore, it is necessary to lead out the reaction heat in time during the reaction process, especially after the viscosity rises, the stirring paddle of the utility model can actively cool down, which can take away the reaction heat concentrated around the stirring paddle by the active cooling of the stirring paddle shaft, so that the temperature of the reaction process is more stable and uniform, and the polyacrylate with higher molecular weight and narrower molecular weight distribution can be synthesized, and the adverse phenomena such as gelation due to local overheating do not occur. At the same time, the outward pushing-down type stirring paddle of the utility model can effectively inhibit the pole climbing of the high viscosity fluid system in the stirring process, and can effectively promote the overall flow of the kettle liquid, so that the heat transfer and mass transfer of the high viscosity fluid system are more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0038] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0039] Figure 1 It is the structure schematic drawing of the utility model;

[0040] Figure 2 It is the structure schematic drawing of the kettle body and the cooling system of stirring shaft of the utility model;

[0041] Figure 3 It is the sectional view of the main spiral belt blade of the stirring paddle of the utility model;

[0042] Figure 4 It is the angle between the short side of the lower pressing plate of the stirring paddle of the utility model and the horizontal plane;

[0043] Figure 5 It is the angle between the long side of the lower pressing plate of the stirring paddle of the utility model and the horizontal plane.

[0044] Wherein, the reference signs are: 100, polymerizer cooling system;200, kettle body and stirring shaft cooling system;300, and temperature rising and falling integrated system;400, circulation control pipeline one;500, circulation control pipeline two;1, heat exchanger two;2, heat transfer medium backflow control valve one;3, heat transfer medium circulation control valve one;4, heat transfer medium inlet control valve one;5, connecting pump two;6, heat transfer medium storage tank one;7, polymerizer kettle body;8, stirring shaft heat transfer medium temperature probe;9, connecting pump one;10, heat exchanger one;11, stirring shaft;12, main spiral blade;13, lower pressing plate;14, reaction kettle temperature probe;15, heat transfer medium backflow control valve two;16, cold and hot integrated machine;17, heat transfer medium storage tank two;18, connecting pump three;19, heat transfer medium inlet control valve two;20, heat transfer medium circulation control valve two;71, stirring paddle;72, stirring shaft temperature control system;111, heat transfer medium inflow channel;112, heat transfer medium outflow channel;121, spiral belt one;122, spiral belt two;113, connecting piece. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0047] Through extensive experiments, the research team discovered that the monomer concentration of high-molecular-weight polyacrylates must be above 30%. If the monomer concentration is less than 30%, it is difficult to synthesize high-molecular-weight polyacrylates due to severe chain transfer to the solvent during polymerization. Specifically, when synthesizing high-molecular-weight polyacrylates, the system's monomer concentration is high. Therefore, when the monomer conversion rate increases rapidly in the middle stage of polymerization and the system viscosity increases rapidly, climbing behavior is likely to occur. At this time, the kettle liquid is mainly concentrated near the agitator shaft. At the same time, because ordinary agitators cannot dissipate heat, the kettle liquid temperature near the agitator shaft rises rapidly as the polymerization reaction proceeds. If the large amount of polymerization heat generated near the agitator shaft is not removed in time, the kettle liquid concentrated near the agitator shaft will quickly turn into gel, and the kettle liquid in other areas near the agitator shaft will also turn into gel, resulting in synthesis failure. Therefore, a synthesis device is needed that can both suppress the climbing behavior of high-viscosity fluids and effectively control the kettle liquid temperature near the agitator shaft.

[0048] First, as Figures 1 to 2 As shown, the present invention provides a device for synthesizing high molecular weight polyacrylate adhesive, comprising a kettle body and stirring shaft cooling system 200, a polymerization kettle cooling system 100 and a temperature rise and fall integrated system 300;

[0049] Specifically, the kettle body and stirring shaft cooling system 200 includes a polymerization kettle body 7, a stirring paddle 71 provided in the polymerization kettle body 7, and a stirring shaft temperature control system 72 provided above the polymerization kettle body 7. The polymerization kettle cooling system 100 and the temperature control system 300 are both provided outside the polymerization kettle body 7.

[0050] The polymerization kettle body 7 is a jacketed design, which facilitates the heat transfer medium to heat up and cool down the polymerization kettle body 7. The polymerization kettle cooling system 100 is used to cool down the polymerization kettle body 7. The temperature increase and decrease integrated system 300 is used to heat up or cool down the polymerization kettle body 7. The stirring shaft temperature control system 72 is used to control the temperature of the stirring paddle 71. Specifically:

[0051] The stirring paddle 71 includes a stirring shaft 11 and a main spiral blade 12 provided on the outside of the stirring shaft 11; the stirring shaft temperature control system 72 includes a heat exchanger 10 and a connecting pump 9 connected to the outlet end of the heat exchanger 10 through a pipeline;

[0052] The stirring shaft 11 also adopts a jacketed design, and the heat exchange area of the polymerization kettle is increased, so that the reaction liquid gathered around the stirring paddle 71 can be quickly cooled. Specifically, the stirring shaft 11 is a hollow structure, a heat transfer medium inflow passage 111 is arranged in the stirring shaft 11, and a heat transfer medium outflow passage 112 is formed between the heat transfer medium inflow passage 111 and the stirring shaft 11. One end of the heat transfer medium inflow passage 111 is in communication with the inlet end of the heat transfer medium outflow passage 112, and the other end of the heat transfer medium inflow passage 111 is connected to the connection pump one 9 through a pipeline. The outlet end of the heat transfer medium outflow passage 112 is connected to the heat exchanger one 10.

[0053] A stirring shaft heat transfer medium temperature probe 8 is arranged on the pipeline between the heat transfer medium inflow passage 111 and the connection pump one 9, and the stirring shaft heat transfer medium temperature probe 8 is used to monitor the temperature in the heat transfer medium inflow passage 111. A reaction kettle temperature probe 14 is also arranged on the polymerization kettle body 7, and the reaction kettle temperature probe 14 is used to monitor the temperature inside the polymerization kettle body 7.

[0054] In actual use, the heat transfer medium is introduced into the stirring shaft 11 from the heat transfer medium inflow passage 111 in the shaft center and flows out from the heat transfer medium outflow passage 112 outside the heat transfer medium inflow passage 111, so as to exchange heat with the polymerization kettle body 7. The advantage of this stirring structure is that the diameter of the stirring shaft 11 is increased, so that the contact area of the polymerized polyacrylate with the stirring shaft 11 is increased, that is, the heat exchange area of the polymerization kettle body 7 is increased, so that the reaction heat can be quickly led out of the reaction system.

[0055] In addition, through a large number of experiments, it is found that the stirring paddle 71 (temperature control is performed by using the stirring shaft temperature control system 72) of the utility model can actively cool down. In use, the set temperature is different for different reaction stages. In the early stage of the reaction, the temperature of the heat transfer medium of the stirring paddle 71 can be set to be the same as the temperature in the polymerization kettle body 7. When the temperature in the polymerization kettle body 7 rises by 0.1-3 ℃, the temperature of the heat transfer medium of the stirring paddle 71 is set to be 5-30 ℃ lower than the required temperature of the reaction, and is preferably 8-20 ℃. If the temperature is set too high, that is, the temperature difference between the stirring shaft 11 and the polymerization kettle body 7 is too small, the cooling effect is not obvious. If the temperature is set too low, the cooling effect is too strong, and the temperature in the polymerization kettle body 7 is lower than the required temperature of the reaction.

[0056] The main spiral blade 12 includes two spiral belts one 121 and two spiral belts two 122 which are arranged in a spiral around the stirring shaft 11 and have the same spiral direction, and the two spiral belts one 121 and two spiral belts two 122 are centrally symmetrical about the axis of the stirring shaft 11.

[0057] The stirring shaft 11 is externally provided with a plurality of connecting pieces 113, two of which are arranged on the same circumference of the stirring shaft 11, and the included angle between the two connecting pieces 113 on the same circumference of the stirring shaft 11 is 180°; the other ends of the two connecting pieces 113 on the same circumference of the stirring shaft 11 are respectively connected to the helical belt one 121 and the helical belt two 122;

[0058] Among them, the helical belt one 121 and the helical belt two 122 are designed as outward pushing and downward pressing, which can effectively inhibit the climbing behavior of high viscosity liquid in the reactor, and ensure that the material can effectively transfer heat and mass;

[0059] Among them, the ratio of the diameter of the helical belt one 121 and the helical belt two 122 (i.e. the space width inside the helical line formed by the helical belt one 121 and the helical belt two 122, which is usually measured by the distance between the center axis of the helical line and the peripheral edge) to the diameter of the inner wall of the polymerization kettle body 7 is between 0.9-0.99, and the ratio of the pitch of the helical belt one 121 and the helical belt two 122 to the diameter of the stirring paddle 71 is between 0.5-2.5;

[0060] As shown in Figure 3 The helical belt one 121 and the helical belt two 122 are outwardly turned based on the helical belt, and form an included angle (a) with the extension line of the diameter direction of the stirring shaft 11. The existence of the included angle makes the stirring paddle 71 apply a downward pressure to the fluid when stirring the fluid, and also applies an outward force to the fluid, which can effectively inhibit the pressure of the high concentration fluid towards the shaft center generated by the elastic recovery force of the polymer chain when the fluid is stirred, so that the climbing of the high viscosity fluid can be greatly inhibited;

[0061] Preferably, in the above stirring paddle suitable for high viscosity fluid system, the range of the included angle (a) is greater than 0° and less than 90°; the range of the included angle (a) is further preferably greater than 20° and less than 70°;

[0062] Among them, the helical belt one 121 and the helical belt two 122 are straightened, and the cross section thereof is in the shape of a right triangle or similar triangular structure, which is helpful to the overall stability of the stirring paddle and makes the helical belt not easy to deform;

[0063] The polymerization kettle cooling system 100 comprises a heat exchanger two 1, a heat transfer medium storage tank one 6 and a connecting pump two 5, the inlet end of the heat exchanger two 1 is connected to the polymerization kettle body 7 through a pipeline, the outlet end of the heat exchanger two 1 is connected to the heat transfer medium storage tank one 6 through a pipeline, the outlet end of the heat transfer medium storage tank one 6 is connected to the connecting pump two 5 through a pipeline, and the outlet end of the connecting pump two 5 is connected to the polymerization kettle body 7 through a pipeline;

[0064] The polymerization kettle cooling system 100 is mainly used for rapidly cooling the polymerization kettle body 7; this is because: when synthesizing high molecular weight polyacrylate, since the polymerization reaction is an exothermic reaction, a large amount of reaction heat is generated during polymerization, and if the reaction heat is not removed in time, the polymerization reaction will be out of control, so that high molecular weight polyacrylate cannot be synthesized;

[0065] The temperature rising and falling integrated system 300 comprises a cold and hot integrated machine 16, a heat transfer medium storage tank two 17 and a connecting pump three 18, the inlet end of the cold and hot integrated machine 16 is connected to the polymerization kettle body 7 through a pipeline, the outlet end of the cold and hot integrated machine 16 is connected to the heat transfer medium storage tank two 17 through a pipeline, the outlet end of the heat transfer medium storage tank two 17 is connected to the connecting pump three 18 through a pipeline, and the outlet end of the connecting pump three 18 is connected to the polymerization kettle body 7 through a pipeline;

[0066] The temperature rising and falling integrated system 300 is used for temperature rising and falling of the polymerization kettle body 7, improves the required reaction temperature in the initial and later stages of the polymerization reaction, and cooperates with the polymerization kettle cooling system 100 and the stirring shaft temperature control system 72 to maintain the temperature stability in the middle stage of the reaction;

[0067] In the middle stage of the polymerization reaction, according to the feedback of the reaction kettle temperature probe 14, if the temperature in the polymerization kettle body 7 exceeds the specified range of the polymerization reaction temperature, the polymerization kettle cooling system 100 and the heat exchanger one 10 in the kettle body and the stirring shaft temperature control system 72 are immediately started, the heat transfer medium backflow control valve two 15 and the heat transfer medium inlet control valve two 19 of the temperature rising and falling integrated system 300 are closed, the heat transfer medium circulation control valve two 20 is opened, and the cold heat transfer medium is directly used for cooling the polymerization kettle body 7; when the kettle temperature falls within the specified range, the heat transfer medium backflow control valve one 2 and the heat transfer medium inlet control valve one 4 of the polymerization kettle cooling system 100 are closed, the heat transfer medium circulation control valve one 3 is opened, and the temperature of the stirring shaft 11 is set in the specified range; then the heat transfer medium backflow control valve two 15 and the heat transfer medium inlet control valve two 19 of the temperature rising and falling integrated system 300 are started, the heat transfer medium circulation control valve two 20 is closed, and the heat transfer medium is directly used for heat preservation of the polymerization kettle body 7.

[0068] As shown in Figure 1 In an embodiment of the present application, one end of the stirring shaft 11 located outside the polymerization kettle body 7 is provided with a driving mechanism, and the driving mechanism is used for driving the stirring shaft 11 to rotate.

[0069] As shown in Figure 1 In an embodiment of the present application, the lower ends of the spiral belts one 121 and two 122 are provided with lower pressing plates 13, and the other ends of the two lower pressing plates 13 are connected.

[0070] The angle between the short side of the lower pressing plate 13 and the horizontal plane is 0-90°;

[0071] The curvature of the long side of the lower pressing plate 13 is consistent with the curvature of the bottom of the polymerization kettle body 7;

[0072] The cross section of the helical belt one 121 and the helical belt two 122 is a right triangle after being straightened;

[0073] Due to the helical belt one 121 and the helical belt two 122 on the main helical blade 12 of the stirring paddle 71, the cross section of the helical belt one 121 and the helical belt two 122 is a right triangle after being straightened;

[0074] Therefore, the ratio of the length of the two right angles of the helical belt one 121 to the diameter of the helical belt one 121 (i.e. the space width inside the helical line formed by the helical belt one 121 and the helical belt two 122, which is usually measured by the distance between the center axis of the helical line and the peripheral edge) is independently selected from 0.05-0.2;

[0075] The ratio of the length of the two right angles of the helical belt two 122 to the diameter of the helical belt two 122 (i.e. the space width inside the helical line formed by the helical belt one 121 and the helical belt two 122, which is usually measured by the distance between the center axis of the helical line and the peripheral edge) is independently selected from 0.05-0.2;

[0076] The distance between the lower pressing plate at the bottom of the stirring paddle 71 and the kettle bottom head is between 10-80mm;

[0077] In the utility model, the helical belt one 121 and the helical belt two 122 are designed as an outward pushing and downward pressing type, and have downward pressing and side pressing functions; the lower pressing plate 13 is designed as an inclined type, so that it has a downward pressing function during stirring; the multifunctional combination design makes the stirring paddle 71 of the combination design generate radial outward and downward force on the fluid, so that the pole climbing behavior of the high viscosity fluid is inhibited, and therefore, the stirring paddle 71 of the combination design is suitable for efficient stirring of high concentration and super high viscosity fluid in mixing, heat transfer, reaction and other processes;

[0078] As shown in Figure 4 The bottom lower pressing plate 13 of the utility model is designed as an inclined type, and the angle between the short side of the lower pressing plate 13 and the horizontal plane is (b); the existence of the angle makes the stirring paddle 71 further press the high viscosity fluid downward during stirring of the high viscosity fluid, so as to inhibit the pole climbing of the high viscosity fluid;

[0079] As shown in Figure 5As shown, the included angle between the long side of the lower pressing plate 13 and the horizontal plane is (c), and the existence of the included angle can not only make the stirring paddle 71 closer to the bottom of the polymerizer body 7, but also provide an outward (perpendicular to the axial direction) force for the fluid, so as to push the bottom material to participate in the circulation in the whole polymerizer body 7, and the mixing effect of the high-viscosity fluid is much better than that of the anchor or frame stirring paddle 71 at the bottom, which can effectively eliminate the poor mixing area caused by the elliptical bottom;

[0080] Preferably, in the above-mentioned stirring paddle 71 suitable for a high-viscosity fluid system, the range of the included angle (b) is greater than 0° and less than 90°; and the range of the included angle (b) is further preferably greater than 20° and less than 70°.

[0081] Preferably, in the above-mentioned stirring paddle suitable for a high-viscosity fluid system, the angle of the included angle (c) should be consistent with the curvature of the bottom of the polymerizer body 7.

[0082] As shown in the drawings, Figure 1 In an embodiment of the present application, a heat transfer medium backflow control valve one 2 is arranged on the pipeline between the inlet end of the heat exchanger two 1 and the polymerizer body 7.

[0083] A heat transfer medium inlet control valve one 4 is arranged on the pipeline between the outlet end of the connection pump two 5 and the polymerizer body 7.

[0084] The polymerizer cooling system 100 further comprises a heat transfer medium circulation control valve one 3 and a circulation control pipeline one 400, the heat transfer medium circulation control valve one 3 is arranged on the circulation control pipeline one 400, one end of the circulation control pipeline one 400 is connected to one end of the pipeline between the inlet end of the heat exchanger two 1 and the polymerizer body 7 close to the inlet end of the heat exchanger two 1, and the other end of the circulation control pipeline one 400 is connected to one end of the pipeline between the outlet end of the connection pump two 5 and the polymerizer body 7 close to the outlet end of the connection pump two 5.

[0085] As shown in the drawings, Figure 1 In an embodiment of the present application, a heat transfer medium backflow control valve two 15 is arranged on the pipeline between the inlet end of the cold and hot all-in-one machine 16 and the polymerizer body 7.

[0086] A heat transfer medium inlet control valve two 19 is arranged on the pipeline between the outlet end of the connection pump three 18 and the polymerizer body 7.

[0087] The temperature-raising and -lowering integrated system 300 further comprises a heat transfer medium circulation control valve two 20 and a circulation control pipeline two 500, the heat transfer medium circulation control valve two 20 is arranged on the circulation control pipeline two 500, one end of the circulation control pipeline two 500 is connected to the inlet end of the cold and hot integrated machine 16, and the other end of the circulation control pipeline two 500 is connected to the pipeline between the outlet end of the connecting pump three 18 and the polymeric kettle body 7, close to the outlet end of the connecting pump three 18.

[0088] Since a stable reaction system is the key to synthesizing polyacrylate with high molecular weight (Mw≥1.5 million) and low molecular weight distribution (Mw / Mn≤2), by the arrangement of the device for synthesizing high molecular weight polyacrylate adhesive, the temperature of the polymeric kettle body 7 in the middle of the reaction can be quickly adjusted, and thus the stability of the polymerization reaction can be improved; in addition, the stirring paddle of the device can effectively take away the polymerization heat generated in the polymerization process.

[0089] The working principle of the device for synthesizing high molecular weight polyacrylate adhesive is as follows: when the polymerized polyacrylate climbs the paddle due to the increase in viscosity, the material is mainly concentrated around the stirring paddle 71, the contact area of the material at the kettle wall of the polymeric kettle body 7 decreases, and the heat exchange efficiency decreases; at the same time, the free radical polymerization is an exothermic reaction, a large amount of polymer is concentrated around the stirring paddle 71, if the reaction heat generated cannot be quickly led out of the reaction system, the material will rapidly increase in temperature, and adverse phenomena such as explosive polymerization or gelation will occur. Therefore, it is necessary to lead out the reaction heat in time during the reaction process, especially after the viscosity increases; the stirring paddle 71 capable of active cooling can actively cool through the stirring shaft 11 to take away the reaction heat concentrated around the stirring paddle 71, so that the temperature of the reaction process is more stable and uniform, and polyacrylate with higher molecular weight and narrower molecular weight distribution can be synthesized, and adverse phenomena such as gelation due to local overheating will not occur; at the same time, the outward pushing and downward pressing type stirring paddle 71 can effectively inhibit the climbing of the high-viscosity fluid system during stirring, and can effectively promote the overall flow of the kettle liquid in the polymeric kettle body 7, so that the heat transfer and mass transfer of the high-viscosity fluid system are more uniform.

[0090] In the second aspect, the utility model provides a kind of synthesis method of the device for synthesizing high molecular weight polyacrylate adhesive, and the synthesis method comprises the following steps:

[0091] S1: oxygen removal stage

[0092] According to weight fraction, 55-95 parts of soft monomer, 5-45 parts of hard monomer, 0.1-10 parts of functional monomer and 10-250 parts of solvent are weighed, and after being mixed uniformly, they are placed in the polymeric kettle body 7, the temperature is raised to above the boiling point of the solvent, and nitrogen is introduced into the polymeric kettle body 7 at the same time to remove oxygen in the polymeric kettle body 7, the oxygen removal time is 2h, and after the oxygen removal is completed, the temperature of the mixture in the polymeric kettle body 7 is reduced to 40-70℃ for standby, and the front preparation of mixed material is prepared;

[0093] The amount of solvent added in the deoxygenation stage depends on the monomer concentration, so that the monomer concentration is between 40% and 90%. If the monomer concentration is too high, the gelation effect in the reaction stage is too fast, and the reaction process is difficult to control. If the monomer concentration is lower than 40%, it is difficult to synthesize polyacrylate with high molecular weight due to serious chain transfer of the solvent. At the same time, the reaction temperature in this stage should not be too high, otherwise chain transfer will be serious and the molecular weight of the synthesized polyacrylate will be small;

[0094] S2: reaction stage

[0095] 10-40 parts of solvent for deoxygenation were used to dissolve 0.001-1 part of initiator to prepare an initiator solution, which was then added dropwise into the pre-mixed material in the polymerization kettle 7 for 3-7 hours. After 1-4 hours of adding the initiator, 40-300 parts of solvent were slowly added. All the solvent was added into the polymerization kettle 7 within 1-3 hours after the completion of the addition of the initiator. After all the solvent was added, the reaction was continued for 2-5 hours to prepare the reaction product.

[0096] In step S2, after 1-4 hours of adding the initiator, 40-300 parts of solvent were slowly added. All the solvent was added into the polymerization kettle 7 within 1-3 hours after the completion of the addition of the initiator. Specifically, after 1-4 hours of adding the initiator, 40-300 parts of solvent were slowly added. The dropping speed of the solvent depends on the dropping speed of the initiator, that is, all the solvent needs to be added within 1-3 hours after the completion of the addition of the initiator.

[0097] In the reaction stage, the amount of solvent added in this stage and the amount of monomer added in the deoxygenation stage are controlled to control the theoretical monomer concentration after the addition of the solvent in this stage to be between 30% and 40%. This is because: if the theoretical monomer concentration is too high, the viscosity of the system is too high, which is not conducive to heat and mass transfer, and there is a risk of a small amount of gel in the synthesized polyacrylate; if the theoretical monomer concentration is too low, the molecular weight of the synthesized polyacrylate is small and the molecular weight distribution is wide.

[0098] S3: post-treatment stage

[0099] After the completion of the polymerization reaction, solvent was added to the polymerization kettle 7 for dilution, and the concentration of the reaction product in the polymerization kettle 7 was adjusted to 15%-25% for discharge.

[0100] In the above synthesis steps, the soft monomer is any one or more of ethyl acrylate, n-butyl acrylate, isooctyl acrylate, and lauryl methacrylate, mixed in any proportion;

[0101] The hard monomer is any one or more of styrene, methyl methacrylate, vinyl acetate, benzyl acrylate, benzyl methacrylate, 2-phenoxyethyl acrylate mixed in any ratio;

[0102] The functional monomer is any one or more of hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl acrylate, glycidyl methacrylate, isobornyl acrylate, acrylic acid, itaconic acid mixed in any ratio;

[0103] The solvent is any one or more of ethyl acetate, toluene, dichloromethane mixed in any ratio;

[0104] The initiator is any one or more of azobisisobutyronitrile, benzoyl peroxide, diisobutyryl peroxide, cumyl peroxyneodecanoate, 1,1,3,3-tetramethylbutyl peroxyneodecanoate, t-amyl peroxyneodecanoate, diisobutyl peroxydicarbonate, bis(4-t-butylcyclohexyl) peroxydicarbonate, di(2-ethylhexyl) peroxydicarbonate, t-butyl peroxyneodecanoate, t-amyl peroxypivalate, t-butyl peroxypivalate, dilauroyl peroxide mixed in any ratio.

[0105] The following is a specific example, in the following examples, if no special instructions, each raw material can be obtained by market.

[0106] Example 1

[0107] The present embodiment provides a synthetic method of a device for synthesizing high molecular weight polyacrylate adhesive, which comprises the following steps:

[0108] (1) Oxygen removal stage: according to the weight fraction, 82 parts of soft monomer, 15 parts of hard monomer, 3 parts of functional monomer and 70 parts of solvent are mixed and placed in a polymerization kettle, one side is raised to above the boiling point of the solvent, the other side is purged with nitrogen into the polymerization kettle to remove oxygen in the reaction system, the time is 2h. After oxygen removal, the temperature of the reaction system is reduced to 65℃ for standby.

[0109] (2) Reaction stage: after oxygen removal, 0.002 parts of initiator are dissolved in 20 parts of solvent to prepare an initiator solution, then added to the reaction kettle, the drop time is 4h. After 3h of initiator drop, 80 parts of solvent are slowly added, and the addition is completed within 3h. After the completion of solvent drop, continue to react for 4h to complete the polymerization reaction. The temperature of the reaction system is controlled by using the polymerization kettle cooling system 100 during the reaction.

[0110] (3) Post-processing stage: after the completion of polymerization reaction, appropriate amount of solvent is added for dilution, and the concentration of the kettle liquid is adjusted to 15%~25% to discharge.

[0111] Comparative Example 1

[0112] The present comparative example provides a synthesis method of a device for synthesizing high molecular weight polyacrylate adhesive. Compared with Example 1, the temperature control of the reaction system is not enabled by the polymerization kettle cooling system 100 in the present comparative example, and the rest is the same as Example 1.

[0113] Comparative Example 2

[0114] The present comparative example provides a synthesis method of a device for synthesizing high molecular weight polyacrylate adhesive. Compared with Example 1, the stirring paddle in the present comparative example uses a common helical ribbon stirring paddle, and the rest is the same as Example 1.

[0115] Performance test

[0116] The polyacrylate adhesives prepared in the above examples and comparative examples are tested for molecular weight and molecular weight distribution, and the relevant test methods are as follows:

[0117] The molecular weight and molecular weight distribution are measured by GPC produced by Waters Company. The weight average molecular weight is determined by conversion of standard polystyrene. The sample concentration for GPC test is 2 mg / mL, the sample introduction amount is 50 μmL, the temperature is 30°C, and the flow rate is 1 mL / min. The determination is carried out by tetrahydrofuran dissolution;

[0118] The test results are shown in Table 1.

[0119] Table 1

[0120]

[0121] As can be seen from the results in Table 1, using the device for synthesizing high molecular weight polyacrylate adhesive provided by the present application, i.e. applying the device for synthesizing high molecular weight polyacrylate adhesive provided by the present application to the synthesis method of high molecular weight polyacrylate adhesive, a polyacrylate with higher molecular weight and narrower molecular weight distribution can be stably synthesized.

[0122] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0123] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A device for synthesizing high molecular weight polyacrylate adhesive, characterized in that: The invention comprises a kettle body and stirring shaft cooling system (200), a polymerization kettle cooling system (100) and a temperature-raising and cooling integrated system (300), wherein the kettle body and stirring shaft cooling system (200) comprises a polymerization kettle body (7), a stirring paddle (71) arranged in the polymerization kettle body (7) and a stirring shaft temperature control system (72) arranged above the polymerization kettle body (7), the polymerization kettle cooling system (100) and the temperature-raising and cooling integrated system (300) are both arranged outside the polymerization kettle body (7), the polymerization kettle cooling system (100) is used for cooling the polymerization kettle body (7), and the temperature-raising and cooling integrated system (300) is used for heating or cooling the polymerization kettle body (7); The stirring paddle (71) comprises a stirring shaft (11) and a main spiral blade (12) arranged outside the stirring shaft (11); the stirring shaft (11) is a hollow structure; a heat transfer medium inflow channel (111) is provided in the stirring shaft (11); a heat transfer medium outflow channel (112) is formed between the heat transfer medium inflow channel (111) and the stirring shaft (11); The stirring shaft temperature control system (72) includes a heat exchanger (10) and a connecting pump (9) connected to the outlet end of the heat exchanger (10) through a pipeline, the outlet end of the connecting pump (9) is connected to the heat transfer medium inflow channel (111) through a pipeline, the outlet end of the heat transfer medium inflow channel (111) is connected to the inlet end of the heat transfer medium outflow channel (112), and the outlet end of the heat transfer medium outflow channel (112) is connected to the heat exchanger (10); The main spiral blade (12) comprises two spiral ribbons (121) and two spiral ribbons (122) which are spirally arranged around the stirring shaft (11) and have the same spiral direction. The spiral ribbons (121) and the spiral ribbons (122) are centrally symmetrical about the axis of the stirring shaft (11).

2. The device for synthesizing a high molecular weight polyacrylate adhesive according to claim 1, characterized in that: One end of the stirring shaft (11) located outside the polymerization kettle body (7) is provided with a driving mechanism, and the driving mechanism is used to drive the stirring shaft (11) to rotate.

3. The device for synthesizing a high molecular weight polyacrylate adhesive according to claim 1, characterized in that: A stirring shaft heat transfer medium temperature probe (8) is provided on the pipeline between the heat transfer medium inflow channel (111) and the connection pump (9); The polymerization kettle body (7) is also provided with a reactor temperature probe (14), and the reactor temperature probe (14) is used to monitor the internal temperature of the polymerization kettle body (7).

4. The device for synthesizing a high molecular weight polyacrylate adhesive according to claim 1, characterized in that: A plurality of connecting pieces (113) are provided on the outside of the stirring shaft (11), two connecting pieces (113) are provided on the same circumference of the stirring shaft (11), and the angle between the two connecting pieces (113) on the same circumference of the stirring shaft (11) is 180°; The other ends of the two connecting pieces (113) on the same circumference of the stirring shaft (11) are respectively connected to the first spiral belt (121) and the second spiral belt (122).

5. The device for synthesizing high molecular weight polyacrylate adhesive according to claim 1, characterized in that: The lower ends of the spiral belt 1 (121) and the spiral belt 2 (122) are both provided with a lower pressing plate (13), and the other ends of the two lower pressing plates (13) are connected.

6. The device for synthesizing high molecular weight polyacrylate adhesive according to claim 5, characterized in that: The angle between the short side of the lower pressing plate (13) and the horizontal plane is 0-90°; The curvature of the long side of the lower pressing plate (13) is consistent with the curvature of the bottom of the polymerization kettle body (7).

7. The device for synthesizing high molecular weight polyacrylate adhesive according to claim 1, characterized in that: The polymerization kettle cooling system (100) comprises a second heat exchanger (1), a first heat transfer medium storage tank (6) and a second connecting pump (5), wherein the inlet end of the second heat exchanger (1) is connected to the polymerization kettle body (7) via a pipeline, the outlet end of the second heat exchanger (1) is connected to the first heat transfer medium storage tank (6) via a pipeline, the outlet end of the first heat transfer medium storage tank (6) is connected to the second connecting pump (5) via a pipeline, and the outlet end of the second connecting pump (5) is connected to the polymerization kettle body (7) via a pipeline; A heat transfer medium reflux control valve (2) is provided on the pipeline between the inlet end of the second heat exchanger (1) and the polymerization kettle body (7); A heat transfer medium inlet control valve (4) is provided on the pipeline between the outlet end of the second connecting pump (5) and the polymerization kettle body (7); The polymerization kettle cooling system (100) further comprises a heat transfer medium circulation control valve (3) and a circulation control pipeline (400).

8. The device for synthesizing high molecular weight polyacrylate adhesive according to claim 7, characterized in that: The heat transfer medium circulation control valve (3) is provided on the circulation control pipe (400), one end of the circulation control pipe (400) is connected to the end of the pipe between the inlet end of the heat exchanger (1) and the polymerization kettle body (7) close to the inlet end of the heat exchanger (1), and the other end of the circulation control pipe (400) is connected to the end of the pipe between the outlet end of the connection pump (5) and the polymerization kettle body (7) close to the outlet end of the connection pump (5).

9. The device for synthesizing high molecular weight polyacrylate adhesive according to claim 1, characterized in that: The temperature-raising and cooling integrated system (300) comprises a cooling and heating integrated machine (16), a second heat transfer medium storage tank (17), and a third connecting pump (18), wherein the inlet end of the cooling and heating integrated machine (16) is connected to the polymerization kettle body (7) via a pipeline, the outlet end of the cooling and heating integrated machine (16) is connected to the second heat transfer medium storage tank (17) via a pipeline, the outlet end of the second heat transfer medium storage tank (17) is connected to the third connecting pump (18) via a pipeline, and the outlet end of the third connecting pump (18) is connected to the polymerization kettle body (7) via a pipeline; A second heat transfer medium reflux control valve (15) is provided on the pipeline between the inlet end of the cooling and heating integrated machine (16) and the polymerization kettle body (7); A heat transfer medium inlet control valve 2 (19) is provided on the pipeline between the outlet end of the connecting pump 3 (18) and the polymerization kettle body (7); The integrated temperature control system (300) further includes a second heat transfer medium circulation control valve (20) and a second circulation control pipeline (500).

10. The device for synthesizing high molecular weight polyacrylate adhesive according to claim 9, characterized in that: The heat transfer medium circulation control valve 2 (20) is arranged on the circulation control pipe 2 (500), one end of the circulation control pipe 2 (500) is connected to the inlet end of the hot and cold integrated machine (16), and the other end of the circulation control pipe 2 (500) is connected to the end of the pipe between the outlet end of the connection pump 3 (18) and the polymerization kettle body (7) close to the outlet end of the connection pump 3 (18).

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