Water-borne epoxy resin and preparation process thereof

Abstract

The invention discloses water-borne epoxy resin and a preparation process of the water-borne epoxy resin. The water-based paint is prepared from the following raw materials in parts by weight: 3.55 parts of methylbenzene, 27.43 parts of oleic acid, 118.87 parts of epoxy resin, 17.03 parts of butyl acrylate, 27.43 parts of styrene, 17.52 parts of butyl methacrylate, 17.52 parts of 2-ethylhexyl acrylate, 17.03 parts of methacrylic acid, 11.58 parts of ethylene glycol butyl ether, 11.58 parts of propylene glycol monomethyl ether, 3.55 parts of benzoyl peroxide, 23.77 parts of an emulsifier, 14.2 parts of dimethylethanolamine and 350.68 parts of pure water. A long-chain fatty acid flexible group is introduced into an epoxy resin molecular chain, so that the brittleness is improved from the molecular structure level; then, through composite copolymerization of flexible monomers such as butyl acrylate and 2-ethylhexyl acrylate in the step S2 and functional monomers such as methacrylic acid and styrene, hydrophilic groups and compatible groups are synchronously introduced, and the problems that traditional waterborne epoxy resin is high in interfacial tension with a base material and matched auxiliaries, and layering and shrinkage are prone to occurring are solved.

Description

Technical Field

[0001] This invention relates to the field of epoxy resin preparation technology, specifically to an aqueous epoxy resin and its preparation process. Background Technology

[0002] Waterborne epoxy resin is an environmentally friendly epoxy resin. Its solvent is mainly water, rather than traditional organic solvents. Waterborne epoxy resin is widely used in coatings, adhesives, composite materials, packaging materials, electronic components and other fields. It has lower volatile organic compound emissions and is more environmentally friendly and safer.

[0003] Conventional processes often employ a single emulsification method (such as mechanical emulsification or reverse emulsification) or simple graft modification, which can only improve the hydrophilicity of epoxy resins. They cannot simultaneously optimize key properties such as flexibility, compatibility, and film-forming properties, resulting in problems such as "imbalance between hydrophilicity and water resistance" and "high brittleness after film formation," which limits their application in scenarios with high requirements for comprehensive performance. Summary of the Invention

[0004] The purpose of this invention is to provide a waterborne epoxy resin and its preparation process to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A waterborne epoxy resin is prepared from the following raw materials:

[0007] Toluene 3.55 parts, oleic acid 27.43 parts, epoxy resin 118.87 parts, butyl acrylate 17.03 parts, styrene 27.43 parts, butyl methacrylate 17.52 parts, isooctyl acrylate 17.52 parts, methacrylic acid 17.03 parts, ethylene glycol butyl ether 11.58 parts, propylene glycol methyl ether 11.58 parts, benzoyl peroxide 3.55 parts, emulsifier 23.77 parts, dimethyl ethanolamine 14.2 parts, pure water 350.68 parts.

[0008] A process for preparing a waterborne epoxy resin, used in the above-mentioned waterborne epoxy resin, includes the following steps:

[0009] S1: 3.55 parts of toluene, 27.43 parts of oleic acid, and 118.87 parts of epoxy resin were added to a polymerization reactor for ring-opening reaction, and 145.94 parts of intermediate were obtained after the reaction.

[0010] S2: 145.94 parts of the intermediate obtained in step S1, 17.03 parts of butyl acrylate, 27.43 parts of styrene, 17.52 parts of butyl methacrylate, 17.52 parts of isooctyl acrylate, 17.03 parts of methacrylic acid, 11.58 parts of ethylene glycol butyl ether, 11.58 parts of propylene glycol methyl ether, and 3.55 parts of benzoyl peroxide were added to a polymerization reactor for polymerization reaction to obtain 241.26 parts of polymer;

[0011] S3: Add 241.26 parts of the polymer obtained in step S2, 23.77 parts of emulsifier, 350.68 parts of pure water, and 14.2 parts of dimethylethanolamine into the polymerization reactor for emulsification and neutralization treatment;

[0012] S4: Filter the emulsified and neutralized material from step S3 to obtain 660 parts of waterborne epoxy resin product.

[0013] Preferably, the polymerization reactor includes a reactor body, a rotating shaft is rotatably mounted on the reactor body, and a shearing head is mounted on the rotating shaft;

[0014] It also includes a drive ring sleeved on the rotating shaft, a sliding block is fixedly provided on the drive ring, a sliding groove is provided on the rotating shaft, and the sliding block is slidably disposed in the sliding groove;

[0015] An upper side shell and a lower side shell are rotatably disposed on the drive ring, and an intermediate ring is rotatably disposed between the upper side shell and the lower side shell, and a stirring blade is fixedly disposed on the intermediate ring;

[0016] A connecting pin is slidably disposed on the upper shell, a rotating ring is rotatably disposed on the connecting pin, a fixing rod is fixedly disposed on the rotating ring, a first insert block and a second insert block are fixedly disposed on the fixing rod, a first slot is disposed on the middle ring, the first insert block is slidably inserted into the first slot, and a second slot is fixedly disposed on the drive ring, the second insert block is slidably inserted into the second slot.

[0017] It also includes a transmission assembly. When the material is being stirred, the shear head and the stirring blade rotate at the same speed. When the material is being crushed, the transmission assembly causes the shear head to rotate at high speed and the stirring blade to rotate at low speed, with the bottom of the stirring blade located above the material.

[0018] Preferably, a first spring is provided between the abutment pin and the upper shell, and the two ends of the first spring are fixedly connected to the abutment pin and the upper shell respectively;

[0019] A friction plate is fixedly installed on the upper shell, and the friction plate rubs against the rotating ring.

[0020] Preferably, the transmission assembly includes a square tube slidably disposed on the lower shell, a lifting block slidably disposed on the square tube, a guide block slidably disposed on the lifting block, a round tube fixedly disposed on the intermediate ring, a guide groove disposed on the round tube, and the guide block slidably disposed in the guide groove.

[0021] Preferably, a reciprocating threaded sleeve is fixedly provided on the drive ring, and a reciprocating ring is threadedly connected to the reciprocating threaded sleeve, and the reciprocating ring is slidably connected to the lifting block.

[0022] Preferably, a second spring is provided between the lifting block and the guide block, and the two ends of the second spring are fixedly connected to the lifting block and the guide block, respectively.

[0023] Preferably, a downward pressure rod is slidably disposed on the lower shell, a protrusion is fixedly disposed on the downward pressure rod, an inclined groove is disposed on the square tube, and the protrusion is slidably disposed in the inclined groove.

[0024] Preferably, a third spring is provided between the lower pressure rod and the lower side shell, and the two ends of the third spring are fixedly connected to the lower pressure rod and the lower side shell respectively.

[0025] Preferably, a pressure ring is fixedly provided on the pressure rod, the pressure ring is provided with a toothed groove, and a toothed block is fixedly provided on the fixing rod, the toothed block being engaged with the toothed groove.

[0026] In the above technical solution, the waterborne epoxy resin and its preparation process provided by the present invention have the following beneficial effects:

[0027] Through the ring-opening reaction of oleic acid and epoxy resin in step S1, long-chain fatty acid flexible groups are introduced into the epoxy resin molecular chain, improving its brittleness at the molecular structure level. Then, through the composite copolymerization of flexible monomers such as butyl acrylate and isooctyl acrylate with functional monomers such as methacrylic acid and styrene in step S2, hydrophilic groups and compatibility groups are introduced simultaneously. This not only solves the problems of high interfacial tension and easy delamination and cratering between traditional waterborne epoxy resins and substrates and matching additives, but also significantly improves the leveling, impact resistance and bending resistance of the paint film. This makes the product suitable for various substrates such as metal, concrete and plastic, and meets the application needs of multiple scenarios such as architectural coatings, industrial anti-corrosion and flexible adhesives.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0029] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0031] Figure 1 This is a schematic diagram of the internal structure of the vessel provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the front view of the vessel body provided in an embodiment of the present invention;

[0033] Figure 3 Provided for embodiments of the present invention Figure 2 Enlarged view of point A in the image;

[0034] Figure 4 Provided for embodiments of the present invention Figure 3 Enlarged view of point B in the image;

[0035] Figure 5 This is a schematic diagram of the abutment pin and rotating ring structure provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the pressure rod and pressure ring structure provided in an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the square tube and lifting block structure provided in an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of the upper shell, middle ring, lower shell, and drive ring structure provided in an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the guide groove structure provided in an embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Kettle body; 11. Motor; 12. Telescopic rod; 13. Baffle; 2. Rotating shaft; 21. Shear head; 22. Sliding groove; 3. Upper shell; 31. Abutment pin; 32. Rotating ring; 33. Fixed rod; 34. First insert block; 35. Second insert block; 36. First spring; 37. Toothed block; 38. Friction plate; 4. Intermediate ring; 41. Stirring blade; 42. First slot; 43. Round tube; 44. Guide groove; 5. Lower shell; 51. Square tube; 52. Lifting block; 53. Guide block; 54. Second spring; 55. Inclined groove; 6. Drive ring; 61. Second slot; 62. Sliding block; 63. Reciprocating threaded sleeve; 64. Reciprocating ring; 7. Lower pressure rod; 71. Pressure ring; 72. Toothed groove; 73. Third spring; 74. Protrusion. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0043] Please refer to 1-9. A waterborne epoxy resin is prepared from the following raw materials: 3.55 parts toluene, 27.43 parts oleic acid, 118.87 parts epoxy resin, 17.03 parts butyl acrylate, 27.43 parts styrene, 17.52 parts butyl methacrylate, 17.52 parts isooctyl acrylate, 17.03 parts methacrylic acid, 11.58 parts ethylene glycol butyl ether, 11.58 parts propylene glycol methyl ether, 3.55 parts benzoyl peroxide, 23.77 parts emulsifier, 14.2 parts dimethyl ethanolamine, and 350.68 parts pure water.

[0044] A process for preparing a waterborne epoxy resin, comprising the following steps:

[0045] S1: 3.55 parts of toluene, 27.43 parts of oleic acid, and 118.87 parts of epoxy resin were added to a polymerization reactor for ring-opening reaction, and 145.94 parts of intermediate were obtained after the reaction.

[0046] S2: 145.94 parts of the intermediate obtained in step S1, 17.03 parts of butyl acrylate, 27.43 parts of styrene, 17.52 parts of butyl methacrylate, 17.52 parts of isooctyl acrylate, 17.03 parts of methacrylic acid, 11.58 parts of ethylene glycol butyl ether, 11.58 parts of propylene glycol methyl ether, and 3.55 parts of benzoyl peroxide were added to a polymerization reactor for polymerization reaction to obtain 241.26 parts of polymer;

[0047] S3: Add 241.26 parts of the polymer obtained in step S2, 23.77 parts of emulsifier, 350.68 parts of pure water, and 14.2 parts of dimethylethanolamine into the polymerization reactor for emulsification and neutralization treatment;

[0048] S4: Filter the emulsified and neutralized material from step S3 to obtain 660 parts of waterborne epoxy resin product.

[0049] Through the ring-opening reaction of oleic acid and epoxy resin in step S1, long-chain fatty acid flexible groups are introduced into the epoxy resin molecular chain, improving its brittleness at the molecular structure level. Then, through the composite copolymerization of flexible monomers such as butyl acrylate and isooctyl acrylate with functional monomers such as methacrylic acid and styrene in step S2, hydrophilic groups and compatibility groups are introduced simultaneously. This not only solves the problems of high interfacial tension and easy delamination and cratering between traditional waterborne epoxy resins and substrates and matching additives, but also significantly improves the leveling, impact resistance and bending resistance of the paint film. This makes the product suitable for various substrates such as metal, concrete and plastic, and meets the application needs of multiple scenarios such as architectural coatings, industrial anti-corrosion and flexible adhesives.

[0050] The polymerization reactor includes a reactor body 1, a rotating shaft 2 rotatably mounted on the reactor body 1, and a shear head 21 mounted on the rotating shaft 2; it also includes a drive ring 6 sleeved on the rotating shaft 2, a sliding block 62 fixedly mounted on the drive ring 6, a sliding groove 22 provided on the rotating shaft 2, and the sliding block 62 slidably mounted within the sliding groove 22; an upper shell 3 and a lower shell 5 rotatably mounted on the drive ring 6, an intermediate ring 4 rotatably mounted between the upper shell 3 and the lower shell 5, and a stirring blade 41 fixedly mounted on the intermediate ring 4; an abutment pin 31 slidably mounted on the upper shell 3, a rotating ring 32 rotatably mounted on the abutment pin 31, and a fixing rod 33 fixedly mounted on the rotating ring 32. A first insert 34 and a second insert 35 are fixedly mounted on the fixed rod 33. A first slot 42 is provided on the intermediate ring 4, and the first insert 34 is slidably inserted into the first slot 42. A second slot 61 is fixedly mounted on the drive ring 6, and the second insert 35 is slidably inserted into the second slot 61. The system also includes a transmission assembly. During material mixing, the shear head 21 and the stirring blade 41 rotate at the same speed. During material crushing, the transmission assembly causes the shear head 21 to rotate at high speed, while the stirring blade 41 rotates at low speed, with the bottom of the stirring blade 41 positioned above the material. In steps S1 to S3, the stirring blade 41 plays the role of mixing the material. In the emulsification process of S3… During neutralization, the shear head 21 crushes the material, achieving uniform dispersion of the polymer. During stirring, the rotating shaft 2, through the cooperation of the sliding block 62 and the sliding groove 22, drives the drive ring 6 to rotate. The first insert 34 engages with the first slot 42, and the second insert 35 slides into the second slot 61. The drive ring 6 drives the intermediate ring 4 to rotate, thereby driving the stirring blade 41 to rotate and stir the material. At this time, the shear head 21 rotates with the rotating shaft 2, meaning the shear head 21 and the stirring blade 41 rotate at the same speed, providing some auxiliary stirring capability. Because the speed is relatively slow, it does not crush the material. When the material is being crushed, the upper shell 3, lower shell 5, middle ring 4, drive ring 6 and stirring blade 41 move upward. Then the rotating shaft 2 rotates at high speed, driving the shear head 21 to crush the material. At this time, the drive ring 6 drives the stirring blade 41 to rotate at low speed through the transmission assembly. The stirring blade 41 is anchor-shaped, and its side is close to the inner wall of the vessel body 1. When the stirring blade 41 rotates at low speed, it can scrape off the material splashed and adhered to the upper part of the inner wall of the vessel body 1. In addition, after the stirring blade 41 moves upward, its bottom is located above the material, and it can stir the material above during the low-speed rotation, improving the efficiency and uniformity of material crushing.

[0051] Specifically, a first spring 36 is provided between the abutment pin 31 and the upper shell 3. The two ends of the first spring 36 are fixedly connected to the abutment pin 31 and the upper shell 3, respectively. A friction plate 38 is fixedly provided on the upper shell 3. The friction plate 38 rubs against the rotating ring 32. During the stirring process, under the action of the first spring 36, the abutment pin 31 carries the rotating ring 32, so that the first insert 34 and the second insert 35 on the fixed rod 33 are inserted into the first slot 42 and the second slot 61, respectively. When the drive ring 6 rotates with the rotating shaft 2, it can synchronously drive the intermediate ring 4 to rotate, so that the stirring blade 41 and the shear head 21 rotate synchronously, improving the stirring effect on the material. When the first spring 36 is stretched, the abutment pin 31 and the rotating ring 32 move down, so that the first insert 34 is disengaged from the first slot 42 and the second insert 35 is disengaged from the second slot 61. At this time, the drive ring 6 will not drive the intermediate ring to rotate through the first insert 34 and the second insert 35 on the fixed rod 33.

[0052] In a further embodiment of the present invention, the transmission assembly includes a square tube 51 slidably disposed on the lower shell 5, a lifting block 52 slidably disposed on the square tube 51, a guide block 53 slidably disposed on the lifting block 52, a round tube 43 fixedly disposed on the intermediate ring 4, a guide groove 44 disposed on the round tube 43, and the guide block 53 slidably disposed in the guide groove 44. When the abutment pin 31 and the rotating ring 32 move down, causing the first spring 36 to stretch, the square tube 51 will slide laterally and insert the guide block 53 into the guide groove 44. At this time, through the reciprocating sliding of the lifting block 52 with the guide block 53, the guide block 53 cooperates with the guide groove 44, driving the round tube 43 to rotate, thereby causing the intermediate ring 4 to rotate with the stirring blade 41.

[0053] Furthermore, a reciprocating threaded sleeve 63 is fixedly installed on the drive ring 6, and a reciprocating ring 64 is threadedly connected to the reciprocating threaded sleeve 63. The reciprocating ring 64 is slidably connected to the lifting block 52. After the stirring blade 41 completes its upward movement, the first spring 36 is stretched, the fixing rod 33 moves downward, causing the square tube 51 to slide laterally, and the guide block 53 is inserted into the guide groove 44. At this time, the rotating shaft 2 drives the shear head 21 to rotate at high speed, and at the same time drives the drive ring 6 and the reciprocating threaded sleeve 63 to rotate. The reciprocating threaded sleeve 63 rotates, causing the reciprocating ring 64 to slide up and down with the lifting block 52, and the lifting block 52 moves back and forth through the rotation of the reciprocating threaded sleeve 63. The guide block 53 and the guide groove 44 work together to drive the intermediate tube to rotate the stirring blade 41. At this time, the speed of the drive ring 6 is high. The reciprocating ring 64 is driven up and down by the reciprocating threaded sleeve 63 to drive the round tube 43 and the intermediate tube to rotate. The transmission ratio is small. When the rotating shaft 2 rotates at high speed, the stirring blade 41 can rotate at low speed. During the crushing process, the bottom of the stirring blade 41 can stably stir the material above the material through the low speed of the stirring blade 41, thereby improving the uniformity and efficiency of the material crushing by the material shearing head 21.

[0054] Furthermore, a second spring 54 is provided between the lifting block 52 and the guide block 53. The two ends of the second spring 54 are fixedly connected to the lifting block 52 and the guide block 53, respectively. When the square tube 51 slides laterally with the lifting block 52, a deviation occurs between the guide block 53 and the guide groove 44. The guide block 53 then abuts against the inner wall of the round tube 43, compressing the second spring 54. As the drive ring 6 rotates with the reciprocating threaded sleeve 63, the reciprocating ring 64 slides with the lifting block 52 and the guide block 53. When the guide block 53 moves to a point aligned with the guide groove 44, under the action of the second spring 54, the guide block 53 inserts into the groove. Guide groove 44, then, under the rotation of reciprocating threaded sleeve 63, the reciprocating ring 64 continues to slide up and down, so that guide block 53 cooperates with guide groove 44, completing the effect of stirring at low speed while rotating shaft 2 at high speed; reciprocating threaded sleeve 63 has the same working structure as reciprocating screw, driving reciprocating ring 64 to slide during rotation, after sliding to one end, the rotation direction of reciprocating threaded sleeve 63 remains unchanged, causing reciprocating ring 64 to slide in the opposite direction. Thus, through the directional rotation of reciprocating threaded sleeve 63, the reciprocating sliding of reciprocating ring 64 is achieved. And, regarding guide groove 44, see the attached diagram in the instruction manual. Figure 9 A partial schematic diagram of the guide groove 44 is given. The guide groove 44 is arranged in a circular shape around the circular tube 43 and is connected end to end. During the process of the guide block 53 sliding up and down, it can drive the circular tube 43 and the middle ring 4 to rotate in the same direction to complete the rotation of the stirring blade 41.

[0055] In a further embodiment of the present invention, a pressing rod 7 is slidably disposed on the lower shell 5, and a protrusion 74 is fixedly disposed on the pressing rod 7. A groove 55 is disposed on the square tube 51, and the protrusion 74 is slidably disposed in the groove 55. When the pressing rod 7 moves down, the square tube 51 is pushed to slide through the cooperation of the protrusion 74 and the groove 55, thereby causing the square tube 51 to slide with the lifting block 52, so that the guide block 53 is inserted into the guide groove 44.

[0056] In the embodiment provided by the present invention, a third spring 73 is provided between the lower pressure rod 7 and the lower side shell 5. The two ends of the third spring 73 are fixedly connected to the lower pressure rod 7 and the lower side shell 5 respectively. When the lower pressure rod 7 moves down, the third spring 73 is compressed.

[0057] Specifically, a pressure ring 71 is fixedly mounted on the lower pressure rod 7, and a toothed groove 72 is provided on the pressure ring 71. A toothed block 37 is fixedly mounted on the fixed rod 33. The toothed block 37 engages with the toothed groove 72. When the abutment pin 31 and the rotating ring 32 move downward, causing the first spring 36 to stretch, the toothed block 37 engages with the toothed groove 72, pushing the pressure ring 71 and the lower pressure rod 7 downward, compressing the third spring 73. Through the cooperation of the protrusion 74 and the inclined groove 55, the square tube 5... 1. Slide the guide block 53 into the guide groove 44. After the third spring 73 is compressed, when it rebounds, it resets the lower pressure rod 7, the pressure ring 71, and the square tube 51. After the toothed block 37 engages with the toothed groove 72, the rotating ring 32 abuts against the friction plate 38, limiting the rotation of the rotating ring 32, the fixed rod 33, the pressure ring 71, and the lower pressure rod 7, so that when the drive ring 6 drives the intermediate ring 4 to rotate through the transmission assembly, it prevents the lower shell 5 from rotating along with it.

[0058] In a further embodiment of the present invention, a telescopic rod 12 is fixedly installed on the vessel body 1. The telescopic end of the telescopic rod 12 is fixedly connected to the upper shell 3. A baffle 13 is fixedly installed on the telescopic rod 12, and the baffle 13 abuts against the abutting pin 31. A motor 11 is fixedly installed on the vessel body 1. The output shaft of the motor 11 is fixedly connected to the rotating shaft 2. The motor 11 drives the rotation, thereby realizing the rotation of the stirring blade 41 and the shearing head 21. The telescopic rod 12 is an electric telescopic rod or a hydraulic rod in the prior art, used to fix the upper shell 3 and control the lifting and lowering of the upper shell 3. At the same time, the upper shell 3, the drive ring 6, the intermediate ring 4, and the lower shell 5 are all rotatably connected. The overall lifting and lowering can be controlled by the telescopic rod 12. When the upper shell 3 rises to the point where the abutting pin 31 abuts against the baffle 13, the upper shell 3 continues to rise, so that the abutting pin 31 moves down relative to the upper shell 3 in time, completing the switching of the transmission components.

[0059] Working principle: During the material mixing process, the motor 11 drives the shear head 21 to rotate at low speed through the rotating shaft 2. At this time, under the action of the first spring 36, when the abutment pin 31 and the rotating ring 32 are in the upper position, the first insert block 34 is inserted into the first slot 42, and the second insert block 35 is inserted into the second slot 61. When the rotating shaft 2 drives the shear head 21 to rotate, the sliding groove 22 on the rotating shaft 2 cooperates with the sliding block 62 on the drive ring 6 to drive the drive ring 6. Through the cooperation between the first insert block 34 and the first slot 42, and the second insert block 35 and the second slot 61, the intermediate ring 4 is driven to rotate, so that the intermediate ring 4 drives the stirring blade 41 to rotate, thereby achieving the mixing effect of the material. In this state, the stirring blade 41 plays the main mixing role, and the shear head 21 assists in mixing. Under the action of low speed rotation, the shear head 21 will not produce a crushing effect on the material.

[0060] After stirring, the telescopic rod 12 retracts, causing the upper shell 3, intermediate ring 4, drive ring 6, lower shell 5, and stirring blade 41 to slide upwards. This causes the abutment pin 31 on the upper shell 3 to abut against the baffle 13 and slide. The first spring 36 extends, and the abutment pin 31, rotating ring 32, and fixed rod 33 slide downwards synchronously, causing the first insert 34 to disengage from the first slot 42 and the second insert 35 to disengage from the second slot 61. This cuts off the direct transmission between the drive ring 6 and the intermediate ring 4. Furthermore, when the fixed rod 33 moves downwards, the toothed block 37 on the fixed rod 33 engages with the toothed groove 72. Under the pressure of the fixed rod 33, the pressure ring 71 and pressure rod move downwards, compressing the third spring 73. When the pressure rod moves downwards... Through the cooperation of the protrusion 74 and the inclined groove 55, the square tube 51 slides laterally, and the guide block 53 is inserted into the guide groove 44. Then, the rotating shaft 2 rotates at high speed, and the material is crushed by the shear head 21, which drives the drive ring 6 and the reciprocating threaded sleeve 63 to rotate. Under the action of the reciprocating threaded sleeve 63, the reciprocating ring 64 carries the lifting block 52 and the guide block 53 to slide up and down. During the sliding, through the squeezing cooperation between the guide tube and the guide groove 44, the round tube 43 carries the middle ring 4 to rotate at low speed. The shear head 21 rotates at high speed to crush the material, and the stirring blade 41 rotates at low speed to scrape off the material splashed on the inner wall above the vessel body 1, and the bottom of the stirring blade 41 stirs the top of the material.

[0061] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waterborne epoxy resin, characterized in that, Prepared from the following raw materials: Toluene 3.55 parts, oleic acid 27.43 parts, epoxy resin 118.87 parts, butyl acrylate 17.03 parts, styrene 27.43 parts, butyl methacrylate 17.52 parts, isooctyl acrylate 17.52 parts, methacrylic acid 17.03 parts, ethylene glycol butyl ether 11.58 parts, propylene glycol methyl ether 11.58 parts, benzoyl peroxide 3.55 parts, emulsifier 23.77 parts, dimethyl ethanolamine 14.2 parts, pure water 350.68 parts.

2. A process for preparing a waterborne epoxy resin, used to prepare the waterborne epoxy resin as described in claim 1, characterized in that, Includes the following steps: S1: 3.55 parts of toluene, 27.43 parts of oleic acid, and 118.87 parts of epoxy resin were added to a polymerization reactor for ring-opening reaction, and 145.94 parts of intermediate were obtained after the reaction. S2: 145.94 parts of the intermediate obtained in step S1, 17.03 parts of butyl acrylate, 27.43 parts of styrene, 17.52 parts of butyl methacrylate, 17.52 parts of isooctyl acrylate, 17.03 parts of methacrylic acid, 11.58 parts of ethylene glycol butyl ether, 11.58 parts of propylene glycol methyl ether, and 3.55 parts of benzoyl peroxide were added to a polymerization reactor for polymerization reaction to obtain 241.26 parts of polymer; S3: Add 241.26 parts of the polymer obtained in step S2, 23.77 parts of emulsifier, 350.68 parts of pure water, and 14.2 parts of dimethylethanolamine into the polymerization reactor for emulsification and neutralization treatment; S4: Filter the emulsified and neutralized material from step S3 to obtain 660 parts of waterborne epoxy resin product.

3. The preparation process of an aqueous epoxy resin according to claim 2, characterized in that, The polymerization reactor includes a reactor body (1), a rotating shaft (2) is rotatably mounted on the reactor body (1), and a shearing head (21) is mounted on the rotating shaft (2). It also includes a drive ring (6) sleeved on the rotating shaft (2), a sliding block (62) is fixedly provided on the drive ring (6), a sliding groove (22) is provided on the rotating shaft (2), and the sliding block (62) is slidably disposed in the sliding groove (22); The drive ring (6) is rotatably provided with an upper side shell (3) and a lower side shell (5), and an intermediate ring (4) is rotatably provided between the upper side shell (3) and the lower side shell (5). A stirring blade (41) is fixedly provided on the intermediate ring (4). A connecting pin (31) is slidably provided on the upper shell (3), a rotating ring (32) is rotatably provided on the connecting pin (31), a fixing rod (33) is fixedly provided on the rotating ring (32), a first insert (34) and a second insert (35) are fixedly provided on the fixing rod (33), a first slot (42) is provided on the middle ring (4), the first insert (34) is slidably inserted into the first slot (42), a second slot (61) is fixedly provided on the drive ring (6), and the second insert (35) is slidably inserted into the second slot (61); It also includes a transmission assembly. When the material is being stirred, the shear head (21) and the stirring blade (41) rotate at the same speed. When the material is being crushed, the shear head (21) rotates at high speed and the stirring blade (41) rotates at low speed through the transmission assembly, and the bottom of the stirring blade (41) is located above the material.

4. The preparation process of an aqueous epoxy resin according to claim 3, characterized in that, A first spring (36) is provided between the abutment pin (31) and the upper shell (3), and the two ends of the first spring (36) are fixedly connected to the abutment pin (31) and the upper shell (3) respectively. A friction plate (38) is fixedly provided on the upper shell (3), and the friction plate (38) rubs against the rotating ring (32).

5. The preparation process of an aqueous epoxy resin according to claim 3, characterized in that, The transmission assembly includes a square tube (51) slidably disposed on the lower shell (5), a lifting block (52) slidably disposed on the square tube (51), a guide block (53) slidably disposed on the lifting block (52), a round tube (43) fixedly disposed on the intermediate ring (4), a guide groove (44) disposed on the round tube (43), and the guide block (53) slidably disposed in the guide groove (44).

6. The preparation process of an aqueous epoxy resin according to claim 5, characterized in that, A reciprocating threaded sleeve (63) is fixedly provided on the drive ring (6), and a reciprocating ring (64) is threadedly connected to the reciprocating threaded sleeve (63). The reciprocating ring (64) is slidably connected to the lifting block (52).

7. The preparation process of an aqueous epoxy resin according to claim 5, characterized in that, A second spring (54) is provided between the lifting block (52) and the guide block (53), and the two ends of the second spring (54) are fixedly connected to the lifting block (52) and the guide block (53) respectively.

8. The preparation process of an aqueous epoxy resin according to claim 5, characterized in that, A pressure rod (7) is slidably disposed on the lower shell (5), and a protrusion (74) is fixedly disposed on the pressure rod (7). A groove (55) is disposed on the square tube (51), and the protrusion (74) is slidably disposed in the groove (55).

9. The preparation process of an aqueous epoxy resin according to claim 8, characterized in that, A third spring (73) is provided between the lower pressure rod (7) and the lower side shell (5), and the two ends of the third spring (73) are fixedly connected to the lower pressure rod (7) and the lower side shell (5) respectively.

10. The preparation process of an aqueous epoxy resin according to claim 8, characterized in that, A pressure ring (71) is fixedly provided on the pressure rod (7), and a toothed groove (72) is provided on the pressure ring (71). A toothed block (37) is fixedly provided on the fixing rod (33), and the toothed block (37) is engaged with the toothed groove (72).

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