Modified phenolic resin coating and preparation method thereof

Abstract

The invention relates to the technical field of coatings, and discloses a modified phenolic resin coating and a preparation method thereof.The modified phenolic resin coating is prepared from 27-39 parts of modified phenolic resin, 1-11 parts of titanium dioxide, 18-33 parts of epoxy acrylate, 2-13 parts of pentaerythritol, 2-9 parts of mica powder, 2-18 parts of polyvinyl butyral, 7-21 parts of xylene, 4-12 parts of butadiene-styrene rubber, 9-15 parts of turpentine and 4-16 parts of dioctyl phthalate; the preparation method comprises the following steps: adding 7-13 parts of a modifier and 50-80 parts of phenolic resin into a mixer, mixing for 40-60 minutes, adding 4-12 parts of a curing agent, heating to 70-90 DEG C, continuously mixing for 40-60 minutes, and cooling, thereby obtaining the modified phenolic resin. The modifier is monocalcium phosphate. According to the modified phenolic resin coating and the preparation method thereof, in the raw material grinding process, raw materials located at the corner of the lower portion of a grinding barrel can be sucked back into a feeding pipe again, and the raw materials are added to the position below a grinding roller again.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, in particular to a modified phenolic resin coating and a preparation method thereof. Background Art

[0002] Modified phenolic resin coatings, as a type of high-performance industrial coatings that combine the excellent properties of phenolic resins and the characteristics of modifiers, are widely used in the fields of ships, bridges, petrochemical equipment, and mechanical equipment. The preparation method generally involves high-speed dispersion and stirring of epoxy resin and phenolic resin, and adding pigments, fillers and various additives, grinding with a sand mill and filtering. During the preparation process, the raw material ratio and process conditions must be strictly controlled, and appropriate modifiers and addition methods must be selected to give the coating specific properties. With the improvement of environmental awareness and the strengthening of regulations, preparation technology must also consider environmental factors. In general, modified phenolic resin coatings and their preparation technologies occupy an important position in the fields of polymer materials and coating technology, and continue to develop with scientific and technological progress and increased demand.

[0003] In the existing modified phenolic resin coating and its preparation method, during the process of adding raw materials into the grinding barrel for grinding, the raw materials will be thrown to the corner below the grinding barrel under the action of the grinding roller, which will cause the raw materials located at the corner below the grinding barrel to be not ground sufficiently, which may affect the subsequent processing; therefore, it does not meet the existing needs. In this regard, we propose a modified phenolic resin coating and its preparation method. Summary of the invention

[0004] The present invention provides a modified phenolic resin coating and a preparation method thereof, which has the beneficial effect of sucking the raw materials located at the corner below the grinding barrel back into the feed pipe during the grinding of the raw materials, and re-adding the raw materials to the bottom of the grinding roller, thereby solving the problem mentioned in the above background technology that during the process of adding the raw materials into the grinding barrel for grinding, the raw materials will be thrown to the corner below the grinding barrel under the action of the grinding roller, which will cause the raw materials located at the corner below the grinding barrel to be not ground sufficiently, which may affect subsequent processing.

[0005] The present invention provides the following technical scheme: a modified phenolic resin coating and a preparation method thereof, comprising the following steps: selecting 27 to 39 parts of modified phenolic resin, 1 to 11 parts of titanium dioxide, 18 to 33 parts of epoxy acrylate, 2 to 13 parts of pentaerythritol, 2 to 9 parts of mica powder, 2 to 18 parts of polyvinyl butyral, 7 to 21 parts of xylene, 4 to 12 parts of styrene-butadiene rubber, 9 to 15 parts of turpentine, and 4 to 16 parts of dioctyl phthalate; Add 7-13 parts of a modifier and 50-80 parts of a phenolic resin into a mixer and mix for 40-60 minutes, then add 4-12 parts of a curing agent, heat to 70-90°C, continue mixing for 40-60 minutes, and cool to obtain the product; the modifier is calcium dihydrogen phosphate; Add epoxy acrylate and modified phenolic resin into xylene and disperse at a rate of 1800-2200 r / min. After all of them are dissolved, cool to room temperature to prepare a dispersion for use. Add titanium dioxide, pentaerythritol, mica powder, polyvinyl butyral, styrene-butadiene rubber, turpentine and dioctyl phthalate to the dispersion, heat to 80-110° C., disperse uniformly at a rate of 500-700 r / min, cool to room temperature, add to a grinding device for grinding, and obtain a modified phenolic resin coating; The grinding device includes a grinding barrel, a grinding roller is arranged inside the grinding barrel, a fixed plate is fixedly installed on one side of the grinding roller, some rotations of the fixed plate are connected to a first gear, one side of the first gear is fixedly connected to a fixed tube, and an adsorption tube is slidably connected inside the fixed tube.

[0006] As an optional solution of a grinding device for a modified phenolic resin coating described in the present invention, wherein: a feeding hopper is arranged above the grinding barrel, a feeding pipe is arranged below the feeding hopper, the feeding pipe passes through the middle of the grinding roller, and the grinding roller is rotatably connected to the feeding pipe, characterized in that: a conversion sealing bin is opened inside the grinding roller, a sealing sheet is slidably connected inside the conversion sealing bin, the sealing sheet divides the conversion sealing bin into upper and lower layers, a control sliding rod is fixedly connected to the upper side of the sealing sheet, and a movable rod is fixedly connected to the lower side of the sealing sheet; One side of the upper and lower conversion sealing bins is rotatably connected with a movable sealing door, the rotating shaft of the movable sealing door is provided with a torsion spring, and the other side of the upper and lower conversion sealing bins is connected with a connecting pipe.

[0007] As an optional solution of the grinding device for modified phenolic resin coating of the present invention, wherein: a rack is fixedly connected to the lower end of the movable rod, a first gear is meshedly connected to one side of the rack, a first gear is rotatably connected to the fixed plate on one side, and a guide arc groove is provided on the lower side of the fixed plate; A sliding column is fixedly connected to one side of the adsorption tube close to the fixed plate. The sliding column is slidably connected to the guide arc groove, and the adsorption tube is connected to the connecting tube.

[0008] As an optional solution for the grinding device of a modified phenolic resin coating described in the present invention, a locking block is provided on the upper side of the grinding barrel, the locking block is fixedly connected to the feeding pipe, a rotating disk is rotatably connected in the locking groove of the locking block, a pair of fixed columns are fixedly installed on the lower side of the rotating disk, a sliding track is provided on the lower side of the rotating disk, a sliding ball is slidably connected inside the sliding track, and one side of the sliding ball is fixedly connected to the upper end of the control slide rod.

[0009] As an optional solution of a grinding device for a modified phenolic resin coating according to the present invention, wherein: the sliding track comprises a smooth groove, an upper wave groove and a lower wave groove, and the smooth groove, the upper wave groove and the lower wave groove are interconnected; When the sliding ball is located in the upper wave groove, the powder enters the lower layer of the conversion sealing bin, and the powder in the upper layer of the conversion sealing bin enters the feeding pipe; When the sliding ball is located in the lower wave groove, the powder enters the upper layer of the conversion sealing bin, and the powder in the lower layer of the conversion sealing bin enters the feeding pipe.

[0010] As an optional solution for the grinding device of a modified phenolic resin coating described in the present invention, a second gear is provided on one side of the grinding roller, a third gear is meshingly connected to one side of the second gear, a support plate is rotatably connected to the lower side of the third gear, and one side of the support plate is fixedly mounted on the inner side of the grinding barrel.

[0011] As an optional solution for the grinding device of a modified phenolic resin coating described in the present invention, a worm is arranged on the upper side of the third gear, one side of the worm is meshingly connected with a turbine, and one side of the turbine is rotatably connected to the inner wall of the grinding barrel.

[0012] As an optional scheme for the grinding device of a modified phenolic resin coating described in the present invention, wherein: a fixing ring is fixedly connected to a side of the turbine close to the rotating disk, the fixing ring is located at the edge of the turbine, a first cylinder is slidably connected inside the fixing ring, both ends of the first cylinder are fixedly connected to adapter plates, the other end of the adapter plate is fixedly connected to a second cylinder, both ends of the second cylinder are rotatably connected to a fixing plate through the adapter plate, the other end of the fixing plate is fixedly installed on the inner wall of the grinding barrel, the end of the adapter plate close to the second cylinder is fixedly connected to a swinging plate, and the swinging plate passes between the two fixed columns.

[0013] As an optional solution for the grinding device of a modified phenolic resin coating described in the present invention, wherein: a support leg is fixedly connected to the bottom of the grinding barrel, a fixed seat is arranged between the support legs, a power motor is installed on the fixed seat, a conical disk is fixedly connected to the power output end of the power motor, the conical disk is fixedly connected to the lower side of the grinding roller, and the conical disk is used to evenly disperse the raw materials to the bottom of the grinding roller.

[0014] As an optional scheme of a modified phenolic resin coating described in the present invention, wherein: the modified phenolic resin coating is prepared by any preparation method described in any one of the items.

[0015] The present invention has the following beneficial effects:

[0016] 1. The modified phenolic resin coating and the preparation method thereof, through the guidance of the sliding ball by the sliding track, the sliding ball drives the control sliding rod and the sealing sheet to slide up and down in the conversion sealing bin, so that the upper and lower layers of the conversion sealing bin are sucked and blown respectively, so that the raw material powder in the conversion sealing bin can be blown back into the feed pipe, so that the raw material powder can return to the bottom of the grinding roller through the feed pipe for re-grinding, and at the same time, the raw material powder at the corner below the grinding barrel can be sucked into the conversion sealing bin; Moreover, when the sealing sheet slides up and down, it can also drive the rack to slide up and down, so that the first gear, the fixed tube and the adsorption tube can swing, increasing the adsorption area of ​​the adsorption tube, and further making the raw material powder at the corner below the grinding barrel be sucked into the conversion sealing bin, so that the raw material powder can be ground again.

[0017] 2. The modified phenolic resin coating and its preparation method, while the swinging piece swings, the rotating disk rotates slightly through the fixed column. Through such rotation, the sliding ball slides into different slide grooves when it is in the same position, so that the sliding ball is in the upper wave groove at the same position before, and after the rotating disk rotates, the sliding ball slides into the lower wave groove when it slides to the same position again. Through such a design, the swing angles of the fixed tube and the adsorption tube are controlled, so that every corner under the grinding barrel can be passed by the adsorption tube, and further the raw material powder at the corner under the grinding barrel is sucked into the conversion sealing bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall process of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the grinding barrel of the present invention.

[0021] Figure 4 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0022] Figure 5 For the present invention Figure 3 Enlarged structural diagram at B in the middle.

[0023] Figure 6 It is a schematic diagram of the lower structure of the rotating disk of the present invention.

[0024] Figure 7 It is a schematic diagram of the planar structure of the sliding track of the present invention.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the grinding barrel of the present invention.

[0026] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at point C in the middle.

[0027] Fig.10 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0028] In the figure: 1. grinding barrel; 11. feeding hopper; 12. supporting leg; 13. fixing seat; 14. feeding pipe; 15. snap-fit ​​block; 16. conical disk; 17. power motor; 2. rotating disk; 21. sliding track; 22. smooth groove; 23. upper wave groove; 24. lower wave groove; 25. fixing column; 3. grinding roller; 31. second gear; 32. third gear; 33. worm; 34. turbine; 35. fixing ring; 36. first cylinder; 37. adapter plate; 38. second cylinder; 39. fixing plate; 310. swing plate; 311. supporting plate; 4. conversion sealing chamber; 41. sealing plate; 42. control slide bar; 43. sliding ball; 44. movable sealing door; 45. movable rod; 46. rack; 47. first gear; 48. fixing tube; 49. adsorption tube; 410, sliding column; 411, fixing plate; 412, guiding arc groove; 413, connecting pipe; 414, torsion spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figure 1-Figure 10The invention discloses a modified phenolic resin coating and a preparation method thereof. The components by mass can be: 27-39 parts of modified phenolic resin, 1-11 parts of titanium dioxide, 18-33 parts of epoxy acrylate, 2-13 parts of pentaerythritol, 2-9 parts of mica powder, 2-18 parts of polyvinyl butyral, 7-21 parts of xylene, 4-12 parts of styrene-butadiene rubber, 9-15 parts of turpentine, and 4-16 parts of dioctyl phthalate; Add 7-13 parts of a modifier and 50-80 parts of a phenolic resin into a mixer and mix for 40-60 minutes, then add 4-12 parts of a curing agent, heat to 70-90°C, continue mixing for 40-60 minutes, and cool to obtain the product; the modifier is calcium dihydrogen phosphate; The components in parts by mass can also be: 29 to 35 parts of modified phenolic resin, 3 to 9 parts of titanium dioxide, 20 to 31 parts of epoxy acrylate, 5 to 11 parts of pentaerythritol, 4 to 7 parts of mica powder, 5 to 13 parts of polyvinyl butyral, 9 to 16 parts of xylene, 6 to 10 parts of styrene-butadiene rubber, 12 to 14 parts of turpentine, and 6 to 13 parts of dioctyl phthalate.

[0031] The components by mass can also be: 31 parts of modified phenolic resin, 7 parts of titanium dioxide, 27 parts of epoxy acrylate, 7 parts of pentaerythritol, 5 parts of mica powder, 11 parts of polyvinyl butyral, 14 parts of xylene, 8 parts of styrene-butadiene rubber, 13 parts of turpentine, and 8 parts of dioctyl phthalate. The curing agent is one of diethylenetriamine or meta-xylene diamine.

[0032] Add epoxy acrylate and modified phenolic resin into xylene and disperse at a rate of 1800-2200 r / min. After all of them are dissolved, cool to room temperature to prepare a dispersion for use. Add titanium dioxide, pentaerythritol, mica powder, polyvinyl butyral, styrene-butadiene rubber, turpentine and dioctyl phthalate to the dispersion, heat to 80-110° C., disperse uniformly at a rate of 500-700 r / min, cool to room temperature, add to a grinding device for grinding, and obtain a modified phenolic resin coating; The grinding device includes a grinding barrel 1, a grinding roller 3 is arranged inside the grinding barrel 1, a fixed plate 411 is fixedly installed on one side of the grinding roller 3, some rotations of the fixed plate 411 are connected to a first gear 47, one side of the first gear 47 is fixedly connected to a fixed tube 48, and an adsorption tube 49 is slidably connected inside the fixed tube 48.

[0033] The invention comprises a grinding barrel 1, a feeding hopper 11 is arranged above the grinding barrel 1, a feeding pipe 14 is arranged below the feeding hopper 11, the design of the feeding hopper 11 facilitates the entry of raw materials into the feeding pipe 14, a grinding roller 3 is arranged inside the grinding barrel 1, the feeding pipe 14 passes through the middle of the grinding roller 3, and the grinding roller 3 is rotatably connected to the feeding pipe 14, a conversion sealing bin 4 is provided inside the grinding roller 3, a sealing sheet 41 is slidably connected inside the conversion sealing bin 4, the sealing sheet 41 divides the conversion sealing bin 4 into two layers, a control sliding rod 42 is fixedly connected to the upper side of the sealing sheet 41, and a movable rod 45 is fixedly connected to the lower side of the sealing sheet 41; One side of the upper and lower conversion sealing bins 4 is rotatably connected with a movable sealing door 44 , and the rotating shaft of the movable sealing door 44 is provided with a torsion spring 414 . The other side of the upper and lower conversion sealing bins 4 is connected with a connecting pipe 413 .

[0034] A supporting leg 12 is fixedly connected to the bottom of the grinding barrel 1, a fixing seat 13 is arranged between the supporting legs 12, a power motor 17 is installed on the fixing seat 13, the fixing seat 13 can provide a stable supporting platform for the power motor 17, a conical disk 16 is fixedly connected to the power output end of the power motor 17, the conical disk 16 is fixedly connected to the lower side of the grinding roller 3, and the conical disk 16 is used to evenly disperse the raw materials to the bottom of the grinding roller 3.

[0035] First, start the power motor 17, and drive the conical disk 16 and the grinding roller 3 to rotate together in the grinding barrel 1 through the power motor 17, then add the raw materials to be ground into the feeding hopper 11, and then the raw materials enter the feeding pipe 14 through the feeding hopper 11, and then the raw materials are evenly dispersed under the grinding roller 3 through the conical disk 16, and the grinding roller 3 grinds the raw materials.

[0036] In this embodiment: the raw material is evenly dispersed under the grinding roller 3 by the conical disk 16, so that the grinding roller 3 can evenly grind the raw material, so that the raw material will not accumulate at a certain place under the grinding roller 3, so that the raw material can be ground more fully, which is convenient for subsequent processing.

[0037] Embodiment 2: This embodiment is intended to promote the solution of the problem that the raw material located at the corner below the grinding barrel 1 cannot be ground during the grinding process. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 10 The lower end of the movable rod 45 is fixedly connected with a rack 46, one side of the rack 46 is meshedly connected with a first gear 47, one side of the first gear 47 is rotatably connected with a fixed plate 411, and a guide arc groove 412 is opened at the lower side of the fixed plate 411; A sliding column 410 is fixedly connected to one side of the adsorption tube 49 close to the fixed plate 411. The sliding column 410 is slidably connected to the guide arc groove 412. The adsorption tube 49 is connected to the connecting tube 413. A one-way valve that allows entry but not exit is provided in the connecting tube 413.

[0038] A locking block 15 is provided on the upper side of the grinding barrel 1, and the locking block 15 is fixedly connected to the feed pipe 14. A rotating disk 2 is rotatably connected in the locking groove of the locking block 15. The position of the rotating disk 2 can be limited by the design of the locking block 15. A pair of fixed columns 25 are fixedly installed on the lower side of the rotating disk 2. A sliding track 21 is provided on the lower side of the rotating disk 2. A sliding ball 43 is slidably connected inside the sliding track 21, and one side of the sliding ball 43 is fixedly connected to the upper end of the control slide rod 42.

[0039] The sliding track 21 includes a smooth groove 22, an upper wavy groove 23 and a lower wavy groove 24, and the smooth groove 22, the upper wavy groove 23 and the lower wavy groove 24 are connected to each other; when the sliding ball 43 is located in the upper wavy groove 23, the powder enters the lower layer of the conversion sealing bin 4, and the powder in the upper layer of the conversion sealing bin 4 enters the feeding pipe 14; when the sliding ball 43 is located in the lower wavy groove 24, the powder enters the upper layer of the conversion sealing bin 4, and the powder in the lower layer of the conversion sealing bin 4 enters the feeding pipe 14.

[0040] See Figure 8 During the rotation of the grinding roller 3, the fixed plate 411 is driven to rotate together in the grinding barrel 1, and at the same time, the sliding ball 43 on the control slide rod 42 is driven to slide in the sliding track 21. When the sliding ball 43 is located in the upper wave groove 23, the control slide rod 42 and the sealing sheet 41 are driven to slide upward in the conversion sealing bin 4 through the sliding ball 43, so that the gas in the upper conversion sealing bin 4 is compressed, so that the upper movable sealing door 44 is opened, so that the raw materials sucked up from the upper layer re-enter the feed pipe 14, and enter the bottom of the grinding roller 3 again through the feed pipe 14, so that the raw materials can be ground again; When the sealing sheet 41 slides upward, negative pressure is generated in the lower conversion sealing chamber 4, so that adsorption force is generated in the lower connecting pipe 413, and the raw materials at the lower corner of the grinding barrel 1 are adsorbed through the adsorption pipe 49; When the sealing sheet 41 slides upward, the rack 46 is driven to slide upward by the movable rod 45, and the first gear 47 is driven to rotate by the upward sliding of the rack 46. When the first gear 47 rotates, the fixed tube 48 and the adsorption tube 49 are driven to swing together. When the adsorption tube 49 swings, the sliding column 410 is driven to slide in the guide arc groove 412, so that the adsorption tube 49 can adsorb a larger area; When the sliding ball 43 is located in the lower wave groove 24, the sealing plate 41 slides to the bottom of the conversion sealing bin 4. At this time, the conversion sealing bin 4 on the lower layer discharges the material, and the movable sealing door 44 on the upper layer absorbs the material, and at the same time drives the sliding column 410 to slide to the left side of the guiding arc groove 412. The two ends of the guiding arc groove 412 are arc grooves inclined downward. Through such a design, the sliding column 410 can drive the adsorption tube 49 to extend, so that the adsorption tube 49 can adsorb the raw materials at the corner of the lower layer of the grinding barrel 1.

[0041] In this embodiment: by separating the upper and lower layers of the conversion sealing bin 4, the sealing sheet 41 can slide up and down in the conversion sealing bin 4, while the conversion sealing bin 4 can absorb and discharge materials at the same time, and by combining the two connecting pipes 413, the adsorption tube 49 can always be in the state of absorbing materials, so that the adsorption tube 49 can operate uninterruptedly, which is conducive to the adsorption tube 49 to absorb the raw materials at the corner below the grinding barrel 1, and by the design of the one-way valve in the connecting pipe 413, the raw materials sucked into the conversion sealing bin 4 can be prevented from being blown out again through the connecting pipe 413; Moreover, by means of the sliding connection between the fixed tube 48 and the adsorption tube 49 and the assistance of the downward inclined arc groove of the guide arc groove 412, the adsorption tube 49 can be closer to the corner below the grinding barrel 1 while swinging. Such a design can further enable the raw materials at the corner below the grinding barrel 1 to be sucked up, so that the raw materials at the corner below the grinding barrel 1 can be added into the feed tube 14 again and ground again by the grinding roller 3.

[0042] Embodiment 3: This embodiment is intended to promote the solution of the problem that the upper wave groove 23 and the lower wave groove 24 are fixed in position, resulting in that some raw materials at the corners below the grinding barrel 1 cannot be sucked up. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 10 A second gear 31 is provided on one side of the grinding roller 3 , one side of the second gear 31 is meshedly connected with a third gear 32 , the lower side of the third gear 32 is rotatably connected with a support plate 311 , and one side of the support plate 311 is fixedly installed on the inner side of the grinding barrel 1 .

[0043] A worm 33 is provided on the upper side of the third gear 32, one side of the worm 33 is meshedly connected with a turbine 34, one side of the turbine 34 is rotatably connected to the inner wall of the grinding barrel 1, and through the design of the turbine 34 and the worm 33, the worm 33 can drive the turbine 34, while the turbine 34 cannot drive the worm 33.

[0044] A fixing ring 35 is fixedly connected to one side of the turbine 34 close to the rotating disk 2. The fixing ring 35 is located at the edge of the turbine 34. A first cylinder 36 is slidably connected inside the fixing ring 35. Both ends of the first cylinder 36 are fixedly connected to adapter plates 37. The other end of the adapter plate 37 is fixedly connected to a second cylinder 38. Both ends of the second cylinder 38 pass through the adapter plate 37 and are rotatably connected to a fixing plate 39. The other end of the fixing plate 39 is fixedly installed on the inner wall of the grinding barrel 1. One end of the adapter plate 37 close to the second cylinder 38 is fixedly connected to a swinging plate 310. The swinging plate 310 passes between the two fixed columns 25. Through such a design, the subsequent swinging plate 310 can drive the fixed columns 25 on both sides during the swinging process, thereby causing the rotating disk 2 to rotate to a certain extent.

[0045] The modified phenolic resin coating is prepared by any one of the preparation methods of the modified phenolic resin coating.

[0046] See Figure 4 When the grinding roller 3 rotates, the second gear 31 is driven to rotate together. When the second gear 31 rotates to the third gear 32, the third gear 32 can be driven to rotate. The length of the second gear 31 is just enough for the third gear 32 to rotate half a circle. When the third gear 32 rotates, the worm 33 is driven to rotate together. The rotation of the worm 33 drives the turbine 34, so that the turbine 34 rotates together. When the turbine 34 rotates, the fixing ring 35 is driven to rotate together. Since the fixing ring 35 is arranged at the edge of the turbine 34, the fixing ring 35 slides on the first cylinder 36. At the same time, the second cylinder 38 is connected with the fixing plate 39 by rotation, so that the adapter plate 37 swings. When the adapter plate 37 swings, it drives the swinging plate 310 to swing together. Through the swing of the swing plate 310, it can resist the fixed columns 25 on both sides, so that the rotating disk 2 rotates. At the same time, the third gear 32 can only rotate half a circle, so that the swing plate 310 can only swing once, so that the rotating disk 2 will not rotate back after rotating a certain angle. Through such a design, the position of the upper wave groove 23 and the lower wave groove 24 are interchanged, so that the swing position of the fixed tube 48 and the adsorption tube 49 is changed, so that the area that was not sucked before can be sucked by the adsorption tube 49, so that the raw materials at the corner below the grinding barrel 1 can be sucked.

[0047] In this embodiment: through the design of the worm 33 and the turbine 34, after the meshing of the second gear 31 and the third gear 32 is completed, the third gear 32 and the worm 33 will no longer rotate, so that the position of the turbine 34 can be fixed. After the position of the turbine 34 is fixed, the position of the rotating disk 2 can be stabilized, so that the subsequent sliding of the sliding ball 43 can be more stable, and the adsorption tube 49 can operate more stably; at the same time, by rotating the rotating disk 2 by a certain angle, the adsorption tube 49 can pass through the left and right sides of the same position, thereby increasing the adsorption area of ​​the adsorption tube 49, and further allowing the raw materials at the corner below the grinding barrel 1 to be sucked up and re-ground.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing a modified phenolic resin coating, characterized in that: The method comprises the following steps: selecting 27 to 39 parts of modified phenolic resin, 1 to 11 parts of titanium dioxide, 18 to 33 parts of epoxy acrylate, 2 to 13 parts of pentaerythritol, 2 to 9 parts of mica powder, 2 to 18 parts of polyvinyl butyral, 7 to 21 parts of xylene, 4 to 12 parts of styrene-butadiene rubber, 9 to 15 parts of turpentine, and 4 to 16 parts of dioctyl phthalate; Add 7-13 parts of a modifier and 50-80 parts of a phenolic resin into a mixer and mix for 40-60 minutes, then add 4-12 parts of a curing agent, heat to 70-90°C, continue mixing for 40-60 minutes, and cool to obtain the product; the modifier is calcium dihydrogen phosphate; Add epoxy acrylate and modified phenolic resin into xylene and disperse at a rate of 1800-2200 r / min. After all of them are dissolved, cool to room temperature to prepare a dispersion for use. Add titanium dioxide, pentaerythritol, mica powder, polyvinyl butyral, styrene-butadiene rubber, turpentine and dioctyl phthalate to the dispersion, heat to 80-110° C., disperse uniformly at a rate of 500-700 r / min, cool to room temperature, add to a grinding device for grinding, and obtain a modified phenolic resin coating; The grinding device comprises a grinding barrel (1), wherein a grinding roller (3) is arranged inside the grinding barrel (1), a fixing plate (411) is fixedly mounted on one side of the grinding roller (3), a first gear (47) is rotatably connected to one side of the fixing plate (411), a fixing tube (48) is fixedly connected to one side of the first gear (47), and an adsorption tube (49) is slidably connected to the inside of the fixing tube (48).

2. A grinding device for modified phenolic resin coating according to claim 1, wherein a feeding hopper (11) is arranged above the grinding barrel (1), a feeding pipe (14) is arranged below the feeding hopper (11), the feeding pipe (14) passes through the middle of the grinding roller (3), and the grinding roller (3) is rotatably connected to the feeding pipe (14), characterized in that: A conversion sealing chamber (4) is provided inside the grinding roller (3), a sealing sheet (41) is slidably connected inside the conversion sealing chamber (4), the sealing sheet (41) divides the conversion sealing chamber (4) into an upper and lower layer, a control sliding rod (42) is fixedly connected to the upper side of the sealing sheet (41), and a movable rod (45) is fixedly connected to the lower side of the sealing sheet (41); One side of the upper and lower conversion sealing bins (4) is rotatably connected to a movable sealing door (44), a torsion spring (414) is provided at the rotation axis of the movable sealing door (44), and the other side of the upper and lower conversion sealing bins (4) is connected to a connecting pipe (413).

3. A grinding device for modified phenolic resin coating according to claim 2, characterized in that: The lower end of the movable rod (45) is fixedly connected to a rack (46), one side of the rack (46) is meshingly connected to a first gear (47), one side of the first gear (47) is rotatably connected to the fixed plate (411), and a guide arc groove (412) is provided on the lower side of the fixed plate (411); A sliding column (410) is fixedly connected to one side of the adsorption tube (49) close to the fixed plate (411); the sliding column (410) is slidably connected to the guide arc groove (412); and the adsorption tube (49) is connected to the connecting tube (413).

4. The grinding device for a modified phenolic resin coating according to claim 2, characterized in that: A snap-fit ​​block (15) is provided on the upper side of the grinding barrel (1), the snap-fit ​​block (15) is fixedly connected to the feed pipe (14), a rotating disk (2) is rotatably connected in the snap-fit ​​groove of the snap-fit ​​block (15), a pair of fixed columns (25) are fixedly installed on the lower side of the rotating disk (2), a sliding track (21) is provided on the lower side of the rotating disk (2), a sliding ball (43) is slidably connected inside the sliding track (21), and one side of the sliding ball (43) is fixedly connected to the upper end of the control slide rod (42).

5. The grinding device for modified phenolic resin coating according to claim 4, characterized in that: The sliding track (21) comprises a smooth groove (22), an upper wavy groove (23) and a lower wavy groove (24); the smooth groove (22), the upper wavy groove (23) and the lower wavy groove (24) are interconnected; When the sliding ball (43) is located in the upper wave groove (23), the powder enters the lower layer of the conversion sealing bin (4), and the powder in the upper layer of the conversion sealing bin (4) enters the feeding pipe (14); When the sliding ball (43) is located in the lower wave groove (24), the powder enters the upper layer of the conversion sealing bin (4), and the powder in the lower layer of the conversion sealing bin (4) enters the feeding pipe (14).

6. The grinding device for modified phenolic resin coating according to claim 4, characterized in that: A second gear (31) is provided on one side of the grinding roller (3); one side of the second gear (31) is meshingly connected to a third gear (32); a lower side of the third gear (32) is rotatably connected to a support plate (311); one side of the support plate (311) is fixedly mounted on the inner side of the grinding barrel (1).

7. The grinding device for modified phenolic resin coating according to claim 6, characterized in that: A worm (33) is provided on the upper side of the third gear (32), one side of the worm (33) is meshingly connected with a turbine (34), and one side of the turbine (34) is rotatably connected to the inner wall of the grinding barrel (1).

8. The grinding device for modified phenolic resin coating according to claim 7, characterized in that: A fixing ring (35) is fixedly connected to one side of the turbine (34) close to the rotating disk (2), the fixing ring (35) being located at the edge of the turbine (34), a first cylinder (36) being slidably connected inside the fixing ring (35), both ends of the first cylinder (36) being fixedly connected to an adapter plate (37), the other end of the adapter plate (37) being fixedly connected to a second cylinder (38), both ends of the second cylinder (38) being rotatably connected to a fixing plate (39) passing through the adapter plate (37), the other end of the fixing plate (39) being fixedly mounted on the inner wall of the grinding barrel (1), and one end of the adapter plate (37) close to the second cylinder (38) being fixedly connected to a swing plate (310), the swing plate (310) passing between the two fixing columns (25).

9. The grinding device for modified phenolic resin coating according to claim 1, characterized in that: A support leg (12) is fixedly connected to the bottom of the grinding barrel (1), a fixed seat (13) is provided between the support legs (12), a power motor (17) is mounted on the fixed seat (13), a conical disc (16) is fixedly connected to the power output end of the power motor (17), the conical disc (16) is fixedly connected to the bottom side of the grinding roller (3), and the conical disc (16) is used to evenly disperse the raw materials to the bottom of the grinding roller (3).

10. A modified phenolic resin coating, characterized in that: The modified phenolic resin coating is prepared according to the preparation method of any one of claims 1 to 9.

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