A method and equipment for preparing a halogen-free high Tg low-loss resin composition

Abstract

The present invention discloses a method and equipment for preparing a halogen-free high Tg low-loss resin composition, which specifically includes the following steps: S01, weighing a predetermined weight of solvent, mixing and stirring to obtain a resin glue; S02, pouring the resin glue into an impregnation frame, and into a glass fiber cloth that does not pass through the lowest path; S03, the glass fiber cloth enters the impregnation frame for the first time for infiltration, moves out of the impregnation frame, shakes to remove excess glue, and then enters the impregnation frame for the second time. The method and equipment for preparing a halogen-free high Tg low-loss resin composition provided by the present invention can avoid uneven glue distribution and the situation of glue shortage due to non-adhesion by gluing through a double infiltration method, and removes excess glue by patting and shaking after the first time out of the infiltration frame, and pre-dries after the second glue out, and the excess glue is scraped out by a paddle after drying, and the scraped glue is easier to be scraped after drying, and the scraped marks are smooth, and there will be no uneven raised ripples.

Description

Technical Field

[0001] The invention relates to the technical field of copper clad laminates, and in particular to a method and equipment for preparing a halogen-free high Tg low-loss resin composition. Background Art

[0002] Copper clad laminate is made by hot pressing copper foil on both sides of PP board (semi-cured board). PP board is made of glass fiber cloth and resin combined and semi-cured. PP board will be coated with glue by spraying or infiltration during manufacturing.

[0003] According to patent number CN105368001B, published (announcement) date: 2017-11-17, a halogen-free epoxy resin composition is disclosed, which is composed of solids and organic solvents, wherein the weight percentage of the solids is 50-80%, and the organic solvent is the balance, and the solids are prepared from phosphorus-containing epoxy resin, isocyanate-modified epoxy resin, DCPD-type epoxy resin, phosphorus-containing phenolic resin curing agent, DDS curing agent, styrene-maleic acid anhydride copolymer, epoxy resin curing accelerator, phosphate flame retardant, and inorganic filler. The present invention also discloses a preparation method and application of the halogen-free epoxy resin composition. The halogen-free high-frequency and high-speed copper-clad laminate prepared by the halogen-free epoxy resin composition of the present invention has a high glass transition temperature (Tg ≥ 150 ° C), excellent heat resistance and low thermal expansion coefficient (CTE ≦ 3.3%), and low dielectric constant / dielectric loss (Dk ≦ 3.9, Df ≦ 0.009).

[0004] In the prior art including the above-mentioned patent, in the PP board coating process, the cost of infiltration coating is lower than that of spray coating, and it is not easy to have fish eyes, small dense bubbles and uneven glue distribution. However, after the infiltration coating, there is too much excess resin remaining on the surface of the glass fiber cloth, and two extrusion rollers are used to remove the excess resin on the surface. However, the resin is a viscous liquid, and the cylindrical extrusion roller will retain the resin due to the liquid tension. When the glass fiber cloth is separated from the extrusion roller, it will be stuck and drawn due to the tension pulling, so that the finished product will have uneven and raised corrugations, affecting the quality of the copper clad laminate after subsequent hot pressing. Summary of the invention

[0005] The purpose of the present invention is to provide a method and equipment for preparing a halogen-free high Tg low-loss resin composition, aiming to solve the problem of uneven corrugations when an extrusion roller squeezes out excess glue.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a method and equipment for preparing a halogen-free high Tg low-loss resin composition, which specifically comprises the following steps:

[0007] S01, weighing predetermined weight portions of 30 to 80 parts of polyphenylene ether, 30 to 80 parts of modified cyanate resin, 15 to 18 parts of allyl compound, 100 to 180 parts of maleimide resin, 20 to 50 parts of curing crosslinking agent, 40 to 60 parts of halogen-free flame retardant, 40 to 60 parts of filler and 10 to 60 parts of solvent, mixing and stirring to obtain a resin glue;

[0008] S02, pour the resin glue into the impregnation frame and cover the glass fiber cloth of the lowest path;

[0009] S03, the glass fiber cloth is firstly infiltrated in the infiltration frame, then moved out of the infiltration frame and shaken to remove excess glue, and then enters the infiltration frame for the second time;

[0010] S04, the glass fiber cloth is moved out of the impregnation frame for the second time, and the excess glue is scraped off by the paddle board and then pre-dried;

[0011] S05. After the glass fiber cloth is pre-dried, the excess glue is scraped off and placed in a drying box for drying.

[0012] A halogen-free high Tg low-loss resin composition preparation device, comprising:

[0013] An air delivery part is symmetrically arranged at the entrance of the drying box, and the glass fiber cloth slides along the air delivery part;

[0014] The scraping mechanism comprises a paddle plate arranged between the air delivery part and the drying box, and the paddle plate is attached to the movable glass fiber cloth to scrape the glue liquid.

[0015] Preferably, the scraping mechanism further comprises a continuous shaft, a material discharge trough is provided on the continuous shaft, the continuous shaft is driven to rotate and drives the paddle plate to rotate intermittently, so that the paddle plate rotates in the material discharge trough and cleans the paddle plate.

[0016] Preferably, the paddle plate is provided with an intermittent turntable, on which meshing teeth and sliding arc portions are symmetrically arranged, respectively. The paddle plate is provided with meshing teeth, which are assembled at the following two stations:

[0017] First station: the meshing teeth on the intermittent turntable mesh with the meshing teeth on the continuous shaft to flip;

[0018] Second working station: the sliding arc portion and the paddle plate are both in contact with the continuous axis to limit the horizontality of the paddle plate.

[0019] Preferably, a shaking mechanism is also included, which includes a plurality of conveying shafts and impact shafts. The glass fiber cloth is sleeved on the conveying shafts and enters and exits the impregnation frame twice. The impact shafts are driven to intermittently impact the glass fiber cloth that is first moved out of the impregnation frame.

[0020] Preferably, the impact shaft is slidably connected to a sliding frame, and a first spring is arranged therebetween. The continuous shaft rotates to compress the first spring, and the paddle plate rotates to release the first spring, driving the impact shaft to slide along the sliding frame.

[0021] Preferably, a driving mechanism is further included, which includes a rope loop rotating together with the continuous shaft, and a pulling rope is arranged between the rope loop and the impact shaft.

[0022] Preferably, the driving mechanism further comprises an unlocking rod arranged on the paddle plate, a connecting slider is slidably connected to the continuous shaft, and the unlocking rod rotates with the paddle plate to lift the connecting slider to unlock the rope loop and the continuous shaft.

[0023] Preferably, a limiting part is symmetrically arranged on the air delivery part, an air storage plate is arranged at the inlet of the drying box, and an oblique wind channel is opened on the drying box. The oblique wind channel is driven to exhaust air to blow the heat flow along the air storage plate into the limiting part and toward the glass fiber cloth.

[0024] Preferably, an air outlet groove is provided on the limiting portion, and an air delivery rod is fixedly connected between the two air delivery portions.

[0025] In the above technical scheme, the present invention provides a method and equipment for preparing a halogen-free high Tg low-loss resin composition, which has the following beneficial effects: gluing is performed by double infiltration, which can avoid uneven glue distribution and lack of glue due to non-adhesion, and excess glue is removed by patting and shaking after the first infiltration frame, and pre-dried after the second gluing. After drying, the excess glue is scraped off by a pick plate, and the scraped glue is easier to scrape after drying, and the scraped marks are smooth without uneven raised ripples. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0028] Figure 2 An overall cross-sectional schematic diagram provided for an embodiment of the present invention;

[0029] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0030] Figure 4A schematic diagram of the interior of a drying box and the trajectory of a glass fiber cloth provided in an embodiment of the present invention;

[0031] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0032] Figure 6 A schematic diagram of a driving mechanism and a shaking mechanism provided by an embodiment of the present invention;

[0033] Figure 7 for Figure 6 The enlarged schematic diagram at C in the middle;

[0034] Figure 8 for Figure 6 The enlarged schematic diagram at D in the middle;

[0035] Fig. 9 A cross-sectional schematic diagram of a drying box provided in an embodiment of the present invention;

[0036] Fig.10 A schematic cross-sectional view of a gas transmission portion provided in an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Drying box; 11. Heating block; 12. Oblique wind channel; 121. Air delivery port; 13. Air storage plate; 14. Air delivery part; 141. Air delivery rod; 142. Restriction part; 143. Air outlet slot; 2. Scraping mechanism; 20. Paddle plate; 201. Retaining frame; 21. Continuous shaft; 211. Shaking groove; 22. Feeding trough; 222. Continuous turntable; 23. Meshing teeth; 24. Intermittent turntable; 241. Sliding arc part; 242. Elastic 1. actuating mechanism; 2. actuating mechanism; 3. impact shaft; 4. sliding frame; 5. pushing block; 6. connecting rod; 7. first spring; 8. pulling rope; 9. wetting frame; 10. glass fiber cloth; 11. conveying shaft; 12. waste frame; 13. driving mechanism; 14. rotating rod; 15. rope loop; 16. clutch plate; 17. sliding groove; 18. connecting block; 19. second spring; 20. elastic pushing portion; 21. unlocking lever. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] Embodiment 1

[0041] like Figure 1-10 As shown, a method for preparing a halogen-free high Tg low-loss resin composition specifically comprises the following steps:

[0042] S01, weighing predetermined weight portions (one weight portion is 35 g) of 30 to 80 parts of polyphenylene ether, 30 to 80 parts of modified cyanate ester resin, 15 to 18 parts of allyl compound, 100 to 180 parts of maleimide resin, 20 to 50 parts of curing crosslinking agent, 40 to 60 parts of halogen-free flame retardant, 40 to 60 parts of filler and 10 to 60 parts of solvent, mixing and stirring to obtain resin glue;

[0043] S02, pouring resin glue into the impregnation frame 4, the amount of glue in the impregnation frame 4 is enough to cover the glass fiber cloth 40 of the lowest path (it is enough to cover the bottom glass fiber cloth 40);

[0044] S03, the glass fiber cloth 40 enters the impregnation frame 4 for the first time for impregnation, then moves out of the impregnation frame 4 (moving out of the impregnation frame 4 for the first time) and shakes to remove excess glue, and then enters the impregnation frame 4 for the second time;

[0045] S04, the glass fiber cloth 40 is moved out of the impregnation frame 4 for the second time, and the excess glue is scraped off by the paddle plate 20 and then pre-dried;

[0046] S05, after the glass fiber cloth 40 is pre-dried, the excess glue is scraped off and the glass fiber cloth 40 is placed in a drying box 1 for drying to complete the production of the semi-solid sheet.

[0047] In the above technical scheme, gluing is applied by double impregnation, which can avoid uneven glue distribution and lack of glue. After the first removal of the impregnation frame 4, excess glue is removed by patting and shaking, and pre-drying is performed after the second gluing. After drying, excess glue is scraped out by the paddle plate 20. The scraped glue is easier to scrape after drying, and the scraping marks are smooth without uneven raised ripples.

[0048] Embodiment 2

[0049] like Figure 1-10 As shown, a halogen-free high Tg low loss resin composition preparation device comprises:

[0050] The air delivery part 14 is symmetrically arranged at the entrance of the drying box 1, and the glass fiber cloth 40 slides along the air delivery part 14;

[0051] The scraping mechanism 2 includes a paddle plate 20 disposed between the air delivery portion 14 and the drying box 1 , and the paddle plate 20 is attached to the movable glass fiber cloth 40 to scrape the glue.

[0052] Specifically, a heating channel is provided in the drying box 1, and a heating block 11 is provided on the vertical side wall of the heating channel. The heating block 11 faces the glass fiber cloth 40 to dry it. The air delivery part 14 is symmetrically arranged along the glass fiber cloth 40, and there are two groups of them. When in use, a heat flow is output to the glass fiber cloth 40 for pre-drying. The paddle plate 20 is in a state of being perpendicular to the glass fiber cloth 40 (horizontal state) when scraping the glue liquid, so as to scrape off the excess glue liquid. The scraping method can avoid the ripples that appear in the squeezing roller method, and the scraping accuracy is high, and the thickness of the retained glue liquid is more controllable. The paddle plate 20 is a circular trajectory when rotating, and the rotation direction is toward the infiltration frame 4. When in use, the glass fiber cloth 40 first moves into the impregnation frame 4 for the first immersion, then moves out of the liquid surface and shakes to remove excess glue, then performs a second immersion, then moves out of the liquid surface and moves along the air delivery part 14 for pre-drying, then scrapes off excess glue along the paddle plate 20, and enters the drying box 1 for drying.

[0053] As an embodiment provided by the present invention, the scraping mechanism 2 also includes a continuous shaft 21, on which a material discharge trough 22 is opened. The continuous shaft 21 is driven to rotate and drives the paddle plate 20 to rotate intermittently, so that the paddle plate 20 rotates in the material discharge trough 22 and cleans the paddle plate 20.

[0054] Specifically, it also includes a holder 201, and the continuous shaft 21 and the paddle plate 20 are both rotatably connected to the holder 201 for rotation. The continuous shaft 21 is connected to the output end of the motor to drive the rotation. When rotating, the feed trough 22 also serves as a movable groove of the paddle plate 20, which can give the paddle plate 20 a rotation stroke, and the surface of the continuous shaft 21 plays a role in limiting the paddle plate 20 to keep the paddle plate 20 in a horizontal state. When the continuous shaft 21 rotates and the feed trough 22 is not aligned with the paddle plate 20, the paddle plate 20 is limited to be horizontal by the surface of the continuous shaft 21 to scrape off excess glue. The scraped glue will be retained on the paddle plate 20, and when the lower feeding trough 22 is aligned with the paddle plate 20, the paddle plate 20 loses its restriction and rotates along the lower feeding trough 22. While rotating, because the rotation speed of the paddle plate 20 is faster than the continuous shaft 21, the range between the lower feeding trough 22 and the paddle plate 20 will become smaller and smaller, and finally the glue retained on the paddle plate 20 will be scraped off by the lower feeding trough 22 to avoid ripples formed by excessive accumulation of glue. The waste frame 42 is also included towards the continuous shaft 21, and the waste frame 42 can collect the waste glue that has been partially pre-solidified on the paddle plate 20.

[0055] When in use, the glass fiber cloth 40 first moves into the impregnation frame 4 for the first immersion, and then moves out of the liquid surface to shake to remove excess glue, followed by a second immersion. After immersion, it moves out of the liquid surface and moves along the air delivery part 14 for pre-drying, and then scrapes off excess glue along the paddle plate 20 and enters the drying box 1 for drying. The paddle plate 20 that has scraped off the glue will rotate along the discharge trough 22 without restriction as the discharge trough 22 is aligned with the paddle plate 20, and the excess glue is scraped into the discharge trough 22 to clean the paddle plate 20.

[0056] As the best embodiment provided by the present invention, the paddle plate 20 is provided with an intermittent turntable 24, on which meshing teeth 23 and sliding arc portions 241 are symmetrically arranged, respectively. The paddle plate 20 is provided with meshing teeth 23, which is assembled at the following two stations:

[0057] First station: the meshing teeth 23 on the intermittent turntable 24 mesh with the meshing teeth 23 on the continuous shaft 21 to flip;

[0058] Second station: The sliding arc portion 241 and the paddle plate 20 are both in contact with the continuous shaft 21 to limit the paddle plate 20 to be horizontal.

[0059] Specifically, a continuous rotating disk 222 is provided on the continuous shaft 21, and the meshing teeth 23 are provided on the continuous rotating disk 222. An elastic portion 242 is provided between the sliding arc portion 241 and the intermittent rotating disk 24. The surface of the continuous shaft 21 is provided with shaking grooves 211 in a circumferential array. The elastic portion 242 pushes the sliding arc portion 241 to fit the continuous shaft 21. When the paddle plate 20 fits the shaking groove 211, it will flip slightly, and as the shaking groove 211 sinks, it will fit the continuous shaft 21 again and be restricted and reset, causing the paddle plate 20 to produce The intermittent turntable 24 is provided with the following two stations: the first station: the meshing teeth 23 on the intermittent turntable 24 mesh with the meshing teeth 23 on the continuous shaft 21, so that the paddle plate 20 and the continuous shaft 21 mesh and rotate, so as to switch the surface of the paddle plate 20 for cutting the glue; the second station: the sliding arc portion 241 and the paddle plate 20 are both in contact with the continuous shaft 21, at which time the paddle plate 20 is restricted by the continuous shaft 21 and cuts the glue in a horizontal state.

[0060] When in use, the glass fiber cloth 40 first moves into the impregnation frame 4 for the first immersion, and then moves out of the liquid surface after immersion to shake to remove excess glue, followed by a second immersion. After immersion, it moves out of the liquid surface and moves along the gas transmission part 14 for pre-drying, and then scrapes off excess glue along the paddle plate 20. At the same time, the paddle plate 20 will generate a small amplitude shake along the shaking groove 211 and enter the drying box 1 for drying. The paddle plate 20 that has scraped off the glue will align with the paddle plate 20 along the feeding trough 22, and the two sets of meshing teeth 23 will be meshed to drive the paddle plate 20 to rotate along the feeding trough 22, and at the same time, the excess is scraped into the feeding trough 22 to clean the paddle plate 20. As the paddle plate 20 rotates, the sliding arc portion 241 replaces the meshing teeth 23 to fit the continuous shaft 21, and the rotation of the paddle plate 20 is disconnected.

[0061] As an embodiment provided by the present invention, it also includes a shaking mechanism 3, which includes multiple conveying shafts 41 and impact shafts 31. The glass fiber cloth 40 is sleeved on the conveying shafts 41 and enters and exits the wetting frame 4 twice. The impact shaft 31 is driven to intermittently impact the glass fiber cloth 40 that is first moved out of the wetting frame 4.

[0062] Specifically, a plurality of conveying shafts 41 are arranged on a frame (a frame constructed of aluminum alloy profiles or iron plates), and are connected to the output end of a motor through a connecting coupling so as to be driven to rotate and convey the glass fiber cloth 40. The conveying shafts 41 control the glass fiber cloth 40 to enter and exit the impregnation frame 4 twice. The movement trajectory of the impact shaft 31 is toward the part where the glass fiber cloth 40 first exits the impregnation frame 4. The impact shaft 31 is driven to reciprocate along the movement trajectory to strike the glass fiber cloth 40 to make it shake, thereby shaking off excess glue to fill in the part that is not firmly attached during the next immersion, thereby reducing uneven glue or lack of liquid.

[0063] When in use, the glass fiber cloth 40 first moves into the impregnation frame 4 for the first immersion, and then moves out of the liquid surface after immersion. The impact shaft 31 is driven to knock the glass fiber cloth 40 to make it shake to remove excess glue, and then a second immersion is performed. After immersion, it moves out of the liquid surface and moves along the gas transmission part 14 for pre-drying, and then scrapes off excess glue along the paddle plate 20. At the same time, the paddle plate 20 will generate a small amplitude shake along the shaking groove 211 and enter the drying box 1 for drying. The paddle plate 20 that has scraped off the glue will align with the paddle plate 20 along the feeding trough 22, and the restriction is lost so that the two sets of meshing teeth 23 mesh, so as to drive the paddle plate 20 to rotate along the feeding trough 22, and at the same time, the excess is scraped into the feeding trough 22 to clean the paddle plate 20. As the paddle plate 20 rotates, the sliding arc portion 241 replaces the meshing teeth 23 to fit the continuous shaft 21, and the rotation of the paddle plate 20 is disconnected.

[0064] As an embodiment further provided by the present invention, the impact shaft 31 is slidably connected to the sliding frame 32, and a first spring 332 is arranged therebetween. The continuous shaft 21 rotates to drive the first spring 332 to be compressed, and the paddle plate 20 rotates to release the first spring 332, driving the impact shaft 31 to slide along the sliding frame 32.

[0065] Specifically, the sliding frame 32 is set on the frame, and a pushing slider 33 is slidably connected to the sliding frame 32 (the motion trajectory of the impact shaft 31), and a connecting rod 331 is set between the two pushing sliders 33 for reinforcement, and a first spring 332 is set between the pushing slider 33 and the sliding frame 32. The pushing slider 33 rotates with the continuous shaft 21 to slide along the sliding frame 32 and compress the first spring 332, and then releases the first spring 332 as the paddle plate 20 rotates. At this time, the first spring 332 pushes the impact shaft 31 to slide along the sliding frame 32 to impact the glass fiber cloth 40.

[0066] When in use, the glass fiber cloth 40 first moves into the infiltration frame 4 for the first immersion. After immersion, it moves out of the liquid surface. The first spring 332 is compressed as the continuous shaft 21 rotates and is released as the paddle plate 20, so as to drive the impact shaft 31 to knock the glass fiber cloth 40 to make it shake, so as to remove excess glue. Then, it is immersed for the second time. After immersion, it moves out of the liquid surface and moves along the air delivery part 14 for pre-drying. Then, the excess glue is scraped off along the paddle plate 20. At the same time, the paddle plate 20 moves along The shaking groove 211 generates a small vibration and enters the drying box 1 for drying. The paddle plate 20 that has scraped off the glue will align with the discharge groove 22 to the paddle plate 20, and the restriction will be lost so that the two sets of meshing teeth 23 will mesh, so as to drive the paddle plate 20 to rotate along the discharge groove 22, and at the same time, the excess will be scraped into the discharge groove 22 to clean the paddle plate 20. As the paddle plate 20 rotates, the sliding arc portion 241 replaces the meshing teeth 23 to fit the continuous shaft 21, and the rotation of the paddle plate 20 is disconnected.

[0067] As the best embodiment provided by the present invention, it also includes a driving mechanism 5, which includes a rope sleeve 52 rotating together with the continuous shaft 21, and a pulling rope 34 is arranged between the rope sleeve 52 and the impact shaft 31;

[0068] The driving mechanism 5 also includes an unlocking rod 54 arranged on the paddle plate 20 , and a connecting slider 531 is slidably connected to the continuous shaft 21 . The unlocking rod 54 rotates with the paddle plate 20 to lift the connecting slider 531 to unlock the rope loop 52 and the continuous shaft 21 .

[0069] Specifically, a rotating rod 51 is provided on the continuous shaft 21, a rope loop 52 is rotatably connected to the rotating rod 51, a clutch plate 53 is provided on the rotating rod 51, a sliding groove 530 is provided on the clutch plate 53, a connecting slider 531 is slidably connected in the sliding groove 530, a second spring 532 is provided between the two, and the second spring 532 is used to pull the connecting slider 531 close to the sliding groove 530, the pulling rope 34 is provided between the rope loop 52 and the pushing slider 33, an elastic pushing portion 533 is provided in the connecting slider 531, and the connecting slider 53 When the clutch plate 53 is close to the slide groove 530, the elastic push portion 533 presses the rope loop 52, so that the clutch plate 53 and the rope loop 52 rotate synchronously. When the paddle plate 20 rotates, it drives the unlocking rod 54 to pull the connecting slider 531 away from the slide groove 530, so that the elastic push portion 533 is separated from the rope loop 52 and unlocked. At this time, the rope loop 52 is pushed by the first spring 332 to rotate and release the pulling rope 34. The original scraping mechanism 2 is used to realize the retraction and release control of the pulling rope 34, which can reduce the amount of parts and control the time of intermittent impact at the same time.

[0070] When in use, the glass fiber cloth 40 first moves into the infiltration frame 4 for the first immersion, and after immersion, it moves out of the liquid surface. As the continuous shaft 21 rotates, the clutch disc 53 and the rope sleeve 52 rotate synchronously to wind the pulling rope 34 to compress the first spring 332, and as the paddle plate 20 rotates, the unlocking rod 54 pulls the connecting slider 531 away from the slide groove 530, so that the rope sleeve 52 is unlocked, so as to drive the impact shaft 31 to knock the glass fiber cloth 40 to make it shake, so as to remove excess glue, and then a second immersion is performed. After immersion, it moves out of the liquid surface and moves along the gas transmission part 14 for pre-drying. , and then scrape off the excess glue along the paddle plate 20. At the same time, the paddle plate 20 will generate a small amplitude shake along the shaking groove 211 and enter the drying box 1 for drying. The paddle plate 20 that has scraped off the glue will align with the paddle plate 20 along the feeding groove 22, and the restriction will be lost so that the two sets of meshing teeth 23 will mesh, so as to drive the paddle plate 20 to rotate along the feeding groove 22, and at the same time, the excess glue will be scraped into the feeding groove 22 to clean the paddle plate 20. As the paddle plate 20 rotates, the sliding arc portion 241 replaces the meshing teeth 23 to fit the continuous shaft 21, and the rotation of the paddle plate 20 is disconnected.

[0071] As the best embodiment provided by the present invention, the air delivery part 14 is symmetrically provided with a restriction part 142, the inlet of the drying box 1 is provided with an air storage plate 13, and the drying box 1 is provided with an oblique wind channel 12, and the oblique wind channel 12 is driven to exhaust air so that the heat flow enters the restriction part 142 along the air storage plate 13 and blows toward the glass fiber cloth 40;

[0072] An air outlet groove 143 is formed on the limiting portion 142 , and an air delivery rod 141 is fixedly connected between the two air delivery portions 14 .

[0073] Specifically, the air outlet groove 143 is inclined toward the glass fiber cloth 40, and the glass fiber cloth 40 is assisted in limiting by the limiting portion 142 to prevent the glass fiber cloth 40 from excessively deviating and affecting the scraping effect of the paddle plate 20. The oblique wind channel 12 is fixedly connected to the air pump through the air delivery port 121, and the air pump delivers air to the air storage plate 13 to control the air flow to move in the opposite direction of the glass fiber cloth 40 to accelerate the drying of the glue. At the same time, the heat flow will converge at the air storage plate 13 and blow toward the glass fiber cloth 40 along the air outlet groove 143 on the limiting portion 142 to pre-dry the glue, so as to extend the length of the overall drying stage and avoid the state where the glue is not dried. The two air delivery portions 14 simultaneously discharge air as the air delivery rod 141 is connected, so as to perform pre-drying before and after scraping the glue, accelerate drying, and improve the drying effect.

[0074] When in use, the glass fiber cloth 40 first moves into the infiltration frame 4 for the first immersion, and then moves out of the liquid surface after immersion. As the continuous shaft 21 rotates, the clutch disc 53 and the rope sleeve 52 rotate synchronously to wind the pulling rope 34 to compress the first spring 332, and as the paddle plate 20 rotates, the unlocking rod 54 pulls the connecting slider 531 away from the slide groove 530, so that the rope sleeve 52 is unlocked, so as to drive the impact shaft 31 to knock the glass fiber cloth 40 to make it shake, so as to remove excess glue, and then perform a second immersion. After immersion, move out of the liquid surface and move along the gas delivery part 14. At this time, one of the gas delivery parts 14 releases gas for pre-drying, and then scrapes along the paddle plate 20. The excess glue is removed, and the paddle plate 20 will generate a small vibration along the shaking groove 211, and then another air supply part 14 will perform pre-drying again to avoid too fast air flow speed when entering the drying box 1, and then enter the drying box 1 for drying. The paddle plate 20 that has scraped off the glue will follow the discharge trough 22 to align with the paddle plate 20, and the restriction is lost so that the two sets of meshing teeth 23 are meshed to drive the paddle plate 20 to rotate along the discharge trough 22, and at the same time, the excess is scraped into the discharge trough 22 to clean the paddle plate 20. As the paddle plate 20 rotates, the sliding arc portion 241 replaces the meshing teeth 23 to fit the continuous shaft 21, and the rotation of the paddle plate 20 is disconnected.

[0075] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that 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 above 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 halogen-free high Tg low loss resin composition preparation device, characterized in that: include: An air delivery portion (14) is symmetrically arranged at the entrance of the drying box (1), and the glass fiber cloth (40) slides along the air delivery portion (14); A scraping mechanism (2) comprises a paddle plate (20) arranged between the air delivery portion (14) and the drying box (1), wherein the paddle plate (20) is attached to a movable glass fiber cloth (40) to scrape off the glue liquid; The scraping mechanism (2) further comprises a continuous shaft (21), a material discharge trough (22) is provided on the continuous shaft (21), the continuous shaft (21) is driven to rotate and drives the paddle plate (20) to rotate intermittently, so that the paddle plate (20) rotates in the material discharge trough (22) and cleans the paddle plate (20); The paddle plate (20) is provided with an intermittent rotating disk (24), and the intermittent rotating disk (24) is symmetrically provided with meshing teeth (23) and sliding arc portions (241), and the paddle plate (20) is provided with meshing teeth (23), which is assembled at the following two stations: First station: the meshing teeth (23) on the intermittent turntable (24) mesh with the meshing teeth (23) on the continuous shaft (21) to flip; Second workstation: the sliding arc portion (241) and the paddle plate (20) are both in contact with the continuous axis (21) to limit the horizontal position of the paddle plate (20); The surface of the continuous shaft (21) is provided with shaking grooves (211) in a circumferential array.

2. The equipment for preparing a halogen-free high Tg low-loss resin composition according to claim 1, characterized in that: It also comprises a shaking mechanism (3), which comprises a plurality of conveying shafts (41) and an impact shaft (31), the glass fiber cloth (40) is sleeved on the conveying shaft (41) and enters and exits the impregnation frame (4) for a second time, and the impact shaft (31) is driven to intermittently impact the glass fiber cloth (40) that is first displaced out of the impregnation frame (4).

3. The equipment for preparing a halogen-free high Tg low-loss resin composition according to claim 2, characterized in that: The impact shaft (31) is slidably connected to a sliding frame (32), and a first spring (332) is arranged between the two. The continuous shaft (21) rotates to drive the first spring (332) to be compressed, and the paddle plate (20) rotates to release the first spring (332), driving the impact shaft (31) to slide along the sliding frame (32).

4. The equipment for preparing a halogen-free high Tg low-loss resin composition according to claim 3, characterized in that: It also includes a driving mechanism (5), which includes a rope loop (52) that rotates together with the continuous shaft (21), and a pulling rope (34) is arranged between the rope loop (52) and the impact shaft (31).

5. The equipment for preparing a halogen-free high Tg low-loss resin composition according to claim 4, characterized in that: The driving mechanism (5) further comprises an unlocking rod (54) arranged on the paddle plate (20); a connecting slider (531) is slidably connected to the continuous shaft (21); the unlocking rod (54) rotates with the paddle plate (20) to lift the connecting slider (531) to unlock the rope loop (52) and the continuous shaft (21).

6. The equipment for preparing a halogen-free high Tg low-loss resin composition according to claim 1, characterized in that: The air delivery portion (14) is symmetrically provided with a limiting portion (142), an air storage plate (13) is provided at the entrance of the drying box (1), and an oblique wind channel (12) is provided on the drying box (1). The oblique wind channel (12) is driven to discharge air so as to allow a heat flow to enter the limiting portion (142) along the air storage plate (13) and blow toward the glass fiber cloth (40).

7. The equipment for preparing a halogen-free high Tg low-loss resin composition according to claim 6, characterized in that: An air outlet groove (143) is provided on the limiting portion (142), and an air delivery rod (141) is fixedly connected between the two air delivery portions (14).

8. A method for preparing a halogen-free high Tg low-loss resin composition, characterized in that: The device for preparing the halogen-free high Tg low-loss resin composition according to any one of claims 1 to 7 comprises the following steps: S01, weighing predetermined weight portions of 30 to 80 parts of polyphenylene ether, 30 to 80 parts of modified cyanate resin, 15 to 18 parts of allyl compound, 100 to 180 parts of maleimide resin, 20 to 50 parts of curing crosslinking agent, 40 to 60 parts of halogen-free flame retardant, 40 to 60 parts of filler and 10 to 60 parts of solvent, mixing and stirring to obtain a resin glue; S02, pouring the resin glue into the impregnation frame (4) and covering the glass fiber cloth (40) of the lowest path; S03, the glass fiber cloth (40) enters the impregnation frame (4) for the first time and is impregnated, then moves out of the impregnation frame (4) and shakes to remove excess glue, and then enters the impregnation frame (4) for the second time; S04, the glass fiber cloth (40) is moved out of the impregnation frame (4) for the second time, and the excess glue is scraped off by the paddle plate (20) and then pre-dried; S05, after the glass fiber cloth (40) is pre-dried, the excess glue is scraped off and placed in a drying box (1) for drying.

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