CN115651290B - Preparation method and device of low-smoke low-heat release flame-retardant polyolefin - Google Patents
Preparation method and device of low-smoke low-heat release flame-retardant polyolefin Download PDFInfo
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Abstract
The invention discloses a preparation method and a device of low-smoke low-heat release flame-retardant polyolefin, wherein the preparation method comprises the following steps of adding magnesium hydroxide powder into water, adding sodium hexametaphosphate, stirring and mixing to form slurry, adding disodium hydrogen phosphate and zinc oxide into the slurry after uniformly mixing, and adding a silane coupling agent into the slurry at 75-85 ℃. According to the invention, through the design of the mixing mechanism and the conveying mechanism, the materials such as magnesium hydroxide powder, water and sodium hexametaphosphate can be mixed into slurry through stirring, after the mixing is finished, the mixed slurry can be filtered and dried through the conveying mechanism, and the dried magnesium hydroxide is discharged into the box through the discharging pipe and the connecting frame.
Description
Technical Field
The invention relates to the technical field of polyolefin preparation, in particular to a preparation method and a device of low-smoke low-heat release flame-retardant polyolefin.
Background
The flame retardant with low smoke, no halogen and low heat release is the trend of developing the flame retardant at present, and the magnesium hydroxide is used as an inorganic flame retardant, is nontoxic, has less environmental pollution and rich raw materials, and is a better flame retardant material.
Polyolefin generally refers to a generic name of thermoplastic resin obtained by independently polymerizing or copolymerizing ethylene, propylene, 1-butene, 1-pentene, 1-hexene and other alpha-olefins and certain cycloolefins, and has the advantages of abundant raw materials, low price, easy processing and molding and excellent comprehensive performance, so that the polyolefin is a polymer material with the largest yield and wide application range, but the polyolefin has flammability and limits the application field of the polyolefin material, and in order to improve the flame retardance of the polyolefin material, a flame retardant can be added into the polyolefin raw material.
In the preparation process of the polyolefin flame-retardant modification process, the steps of mixing and stirring the prepared raw materials, heating, filtering, drying and the like are completely separated, in the preparation process of the polyolefin flame-retardant modification process, the mixed raw materials are required to be added into a stirring device for stirring, then heated for reaction, filtered by a filtering device and then transferred into a drying device, so that the process in the preparation process of the polyolefin flame-retardant modification process is complicated, and the efficiency in the preparation process of the polyolefin flame-retardant modification process is lower.
Accordingly, there is a need in the art to develop a method and apparatus for preparing low smoke, low heat release flame retardant polyolefin.
Disclosure of Invention
The invention aims to solve the technical problems of providing a preparation method and a device for low-smoke low-heat release flame-retardant polyolefin, which are used for solving the problems that when the polyolefin is prepared in the mode, the mixed raw materials are required to be transferred into drying equipment, so that the preparation process of the flame-retardant polyolefin is more in time, and the preparation efficiency of the flame-retardant polyolefin is lower.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a preparation method of low-smoke low-heat release flame-retardant polyolefin, which comprises the following steps,
(1) Adding magnesium hydroxide powder into water, adding sodium hexametaphosphate, stirring and mixing to form slurry, adding disodium hydrogen phosphate and zinc oxide into the slurry after uniformly mixing, adding a silane coupling agent into the slurry at 75-85 ℃, stirring and mixing for reaction, filtering and drying to obtain modified magnesium hydroxide;
(2) Uniformly mixing the modified magnesium hydroxide, polyolefin, diethyl aluminum phosphinate and methyl vinyl silicone rubber, wherein the mass ratio of the magnesium hydroxide to the polyolefin to the diethyl aluminum phosphinate to the methyl vinyl silicone rubber is (30-40): 60-70: 2-5: 1-5, banburying, extruding and granulating, and cooling to obtain the flame-retardant polyolefin with low smoke and low heat release.
As a preferable scheme of the preparation method of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages:
(1) Adding 14-16 kg of magnesium hydroxide powder into 200L of water, adding 70-80 g of sodium hexametaphosphate, stirring and mixing to form slurry, adding 400-500 g of disodium hydrogen phosphate and 500-600 g of zinc oxide into 200L of water, uniformly mixing, adding into the slurry, adding 20-50 g of silane coupling agent at 80 ℃, stirring and mixing for 4-6 hours, filtering and drying to obtain modified magnesium hydroxide;
(2) The modified magnesium hydroxide, polyolefin, diethyl aluminum phosphinate and methyl vinyl silicone rubber are uniformly mixed, and the mass ratio of the magnesium hydroxide to the polyolefin to the diethyl aluminum phosphinate to the methyl vinyl silicone rubber is 30:65:3: banburying, extruding and granulating at 2,120 ℃, and cooling to obtain the low-smoke low-heat release flame-retardant polyolefin.
As a preferable scheme of the preparation method of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: the polyolefin comprises polyethylene and ethylene-vinyl acetate copolymer.
As another aspect of the present invention, the present invention provides a preparation apparatus of the low smoke, low heat release flame retardant polyolefin, comprising a cylinder and a case, wherein: the box body is fixedly arranged at the bottom of the barrel body, a mixing mechanism is arranged in the barrel body and used for mixing raw materials, and a conveying mechanism is arranged in the box body and used for conveying the materials;
the mixing mechanism comprises a first motor, the first motor is fixedly arranged at the top of the cylinder, the first motor is fixedly connected with a rotating rod through an output shaft, the rotating rod penetrates through the cylinder and extends into the cylinder, a mixing frame is fixedly arranged at the bottom of the rotating rod, and a mixing assembly for mixing raw materials is arranged outside the mixing frame;
the bottom of the cylinder body is embedded with a heating plate.
As a preferable scheme of the preparation device of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: the mixing assembly comprises a cross rod, the cross rod penetrates through the mixing frame and is movably connected with the mixing frame through a bearing, first gears are fixedly arranged at two ends of the cross rod, a circular ring is fixedly arranged on the inner wall of the cylinder body, a rack is fixedly arranged at the top of the circular ring, the first gears are arranged at the top of the rack and are meshed with the rack, a plurality of mixing units are arranged outside the cross rod, the mixing units are arranged inside the mixing frame, the mixing units comprise a first sleeve, the first sleeve is fixedly arranged outside the cross rod, and a plurality of mixing rods are fixedly arranged outside the first sleeve.
As a preferable scheme of the preparation device of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: the mixing mechanism further comprises a propelling component, the propelling component is used for propelling raw materials inside the cylinder, the propelling component comprises a vertical rod, the bottom of the mixing frame is fixedly arranged on the vertical rod, a second sleeve is fixedly arranged on the outer portion of the vertical rod, a plurality of first fan blades are fixedly arranged on the outer portion of the second sleeve, a first scraping plate is fixedly arranged on the outer portion of the vertical rod, and the bottom of the first scraping plate is in contact with the top of the heating plate.
As a preferable scheme of the preparation device of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: the conveying mechanism comprises a second motor, the second motor is fixedly arranged on one side of the box body, the second motor is fixedly connected with a rotating shaft through an output shaft, the rotating shaft penetrates through the box body and extends into the box body, a circular plate is fixedly arranged outside the rotating shaft, a circulation groove is formed in the circular plate, a through groove is formed in the bottom of the cylinder body, the top of the circular plate penetrates through the groove and extends into the inside of the cylinder body, a second gear is fixedly arranged outside the rotating shaft, a vertical rod penetrates through the heating plate and extends into the bottom of the heating plate, the vertical rod is connected with the heating plate through a bearing, a second scraping plate is fixedly arranged outside the vertical rod, the top of the second scraping plate is in contact with the bottom of the heating plate, and a plurality of second fan blades are fixedly arranged outside the vertical rod.
As a preferable scheme of the preparation device of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: the inside subassembly that breaks up that is equipped with of box, break up the subassembly and be used for breaking up the inside raw materials of box, two break up the subassembly and locate the axis of rotation both sides respectively, break up the subassembly and include the pivot, axis of rotation one side is located to the pivot, pivot external fixation is equipped with the third gear, second gear one side is located to the third gear and meshes with the second gear mutually, pivot external fixation is equipped with a plurality of connecting rods, the inside fixed supporting network that is equipped with of box, the supporting network top is equipped with the filter membrane, the fixed frame that is equipped with in supporting network top, fixed frame is inside all located to second gear and third gear.
As a preferable scheme of the preparation device of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: a discharging pipe is fixedly arranged on one side of the box body, a ventilation net is embedded on the discharging pipe, the rotating shaft penetrates through the ventilation net and is connected with the ventilation net through a bearing, a plurality of third fan blades are fixedly arranged outside the rotating shaft and are arranged outside the discharging pipe, the novel discharging pipe comprises a rotating shaft, and is characterized in that a plurality of third scraping plates are fixedly arranged outside the rotating shaft, the third scraping plates are arranged inside the discharging pipe and are in contact with one side of a ventilation net, a diversion net plate is fixedly arranged inside the discharging pipe, the rotating shaft penetrates through the diversion net plate, and a connecting frame is fixedly arranged on one side of the discharging pipe.
As a preferable scheme of the preparation device of the low-smoke low-heat release flame-retardant polyolefin, the invention has the following advantages: the utility model discloses a negative pressure pump, including box, casing, first motor, outlet pipe, first motor, second motor, box one side is equipped with the negative pressure pump, the fixed connecting pipe that is equipped with in negative pressure pump one side, the connecting pipe extends into inside the box, box one side is fixed to be equipped with first supporting seat, the fixed first supporting seat top of locating of negative pressure pump, box one side is fixed to be equipped with the second supporting seat, the second motor is fixed to be located the second supporting seat top, the fixed feeder hopper that is equipped with in barrel top, the fixed protective frame that is equipped with in barrel top, inside protective frame was fixed to be located to first motor, box one side is fixed to be equipped with the outlet pipe, outlet pipe external fixation is equipped with the solenoid valve, the fixed two backup pads that are equipped with in box bottom.
By adopting the technical scheme, the method has the following beneficial effects:
1. according to the invention, through the design of the mixing mechanism and the conveying mechanism, the materials such as magnesium hydroxide powder, water and sodium hexametaphosphate can be mixed into slurry through stirring, after the mixing is finished, the slurry can be heated through a heating plate, the mixed slurry is filtered and dried through the conveying mechanism, and the dried magnesium hydroxide is discharged into the box through the discharging pipe and the connecting frame.
2. According to the invention, through the design of the mixing mechanism and the design of the mixing frame and the mixing rod, the rotation of the mixing frame is vertical rotation, the rotation of the mixing rod is horizontal rotation, and through the rotation of the mixing frame and the mixing rod, the raw materials in the cylinder can be mixed in different directions, so that the raw materials in the cylinder are mixed more uniformly.
3. According to the invention, through the design of the first fan blade, the first fan blade can rotate to push the raw materials in the box body, so that the problems of long-time accumulation of the raw materials in the cylinder body and the bottom of the cylinder body can be effectively avoided, the vertical rod can rotate and simultaneously drive the first scraping plate to rotate, and the problem that the raw materials in the cylinder body are adhered to the heating plate due to heating can be avoided through the design of the first scraping plate.
4. According to the invention, through the design of the conveying mechanism, slurry in the cylinder can indirectly enter the box body through the rotation of the circular plate, the second fan blade rotates to blow heat emitted by the heating plate to raw materials on the filter membrane, so that the raw materials on the filter membrane can be heated, the second fan blade rotates to blow the raw materials, the third fan blade rotates to generate suction, the suction can adsorb the raw materials blown by the second fan blade into the discharging pipe, the third scraper blade rotates to scrape the raw materials adsorbed by the third fan blade, the raw materials are prevented from accumulating and being ventilated on the net, the adsorbed raw materials can be guided through the design of the guide screen plate, the dried raw materials can be discharged out of the box body through the discharging pipe, and a user can collect the dried raw materials at the bottoms of the discharging pipe and the connecting frame.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a cross-sectional view provided by the present invention;
FIG. 3 is a schematic view of the internal structure of the cylinder according to the present invention;
FIG. 4 is a schematic view of the internal structure of the case according to the present invention;
FIG. 5 is a bottom perspective view of the interior of the case provided by the present invention;
FIG. 6 is a perspective view of a circular plate provided by the invention;
FIG. 7 is a perspective view of a tapping pipe provided by the present invention.
In the figure: 1. a cylinder; 2. a case; 3. a first motor; 4. a rotating lever; 5. a mixing frame; 6. a heating plate; 7. a cross bar; 8. a first gear; 9. a circular ring; 10. a rack; 11. a first sleeve; 12. a mixing rod; 13. a vertical rod; 14. a second sleeve; 15. a first fan blade; 16. a first scraper; 17. a second motor; 18. a rotating shaft; 19. a circular plate; 20. a flow channel; 21. a through groove; 22. a second gear; 23. a second scraper; 24. a second fan blade; 25. a rotating shaft; 26. a third gear; 27. a connecting rod; 28. a support net; 29. a filter membrane; 30. a fixed frame; 31. a discharge pipe; 32. a ventilation screen; 33. a third fan blade; 34. a third squeegee; 35. a diversion screen plate; 36. a connection frame; 37. a negative pressure pump; 38. a connecting pipe; 39. a first support base; 40. a second support base; 41. a feed hopper; 42. a protective frame; 43. a water outlet pipe; 44. an electromagnetic valve; 45. and a support plate.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
The invention relates to a preparation method of low-smoke low-heat release flame-retardant polyolefin, which comprises the following steps:
(1) Adding the magnesium hydroxide powder of 14 and kg into 200L of water, adding 80g of sodium hexametaphosphate, stirring and mixing to form slurry, adding 500g of disodium hydrogen phosphate and 600g of zinc oxide into 200L of water, uniformly mixing, adding into the slurry, adding 50g of silane coupling agent at 80 ℃, stirring and mixing for 4 hours, filtering and drying to obtain the modified magnesium hydroxide.
(2) Uniformly mixing modified magnesium hydroxide, polyolefin, diethyl aluminum phosphinate and methyl vinyl silicone rubber, wherein the mass ratio of the magnesium hydroxide to the polyolefin to the diethyl aluminum phosphinate to the methyl vinyl silicone rubber is 30:65:3: banburying, extruding and granulating at 2,120 ℃, and cooling to obtain the low-smoke low-heat release flame-retardant polyolefin.
Referring to fig. 1 to 7, in the preparation process of the low smoke and low heat release flame retardant polyolefin, the preparation device of the modified magnesium hydroxide in the step (1) comprises a cylinder body 1 and a box body 2, and is characterized in that: the box body 2 is fixedly arranged at the bottom of the cylinder body 1, a mixing mechanism is arranged in the cylinder body 1 and used for mixing raw materials, a conveying mechanism is arranged in the box body 2 and used for conveying the materials;
the mixing mechanism comprises a first motor 3, the first motor 3 is fixedly arranged at the top of the cylinder body 1, the first motor 3 is fixedly connected with a rotating rod 4 through an output shaft, the rotating rod 4 penetrates through the cylinder body 1 and extends into the cylinder body 1, a mixing frame 5 is fixedly arranged at the bottom of the rotating rod 4, and a mixing component for mixing raw materials is arranged outside the mixing frame 5;
the bottom of the cylinder body 1 is inlaid with a heating plate 6.
Wherein, in order to solve the problem that mixes the inside raw materials of barrel 1, mixing assembly includes horizontal pole 7, horizontal pole 7 runs through mixed frame 5 and pass through bearing swing joint with mixed frame 5, horizontal pole 7 both ends are all fixed and are equipped with first gear 8, fixed ring 9 that is equipped with on the barrel 1 inner wall, the fixed rack 10 that is equipped with in ring 9 top, rack 10 top and with rack 10 engaged with are located to first gear 8, the horizontal pole 7 outside is equipped with a plurality of mixing units, a plurality of mixing units all locate mixed frame 5 inside, mixing unit includes first sleeve 11, first sleeve 11 is fixed to be located the horizontal pole 7 outside, first sleeve 11 external fixation is equipped with a plurality of mixing bars 12.
Wherein, in order to solve the problem that mixes the inside raw materials of barrel 1, mixing mechanism still includes propulsion unit, and propulsion unit is used for advancing the inside raw materials of barrel 1, and propulsion unit includes montant 13, and montant 13 is fixed to be located and mixes 5 bottoms of frame, and montant 13 external fixation is equipped with second sleeve 14, and second sleeve 14 external fixation is equipped with a plurality of first flabellums 15, and montant 13 external fixation is equipped with first scraper blade 16, and first scraper blade 16 bottom contacts with hot plate 6 top.
In order to solve the problem of conveying raw materials inside the box body 2, the conveying mechanism comprises a second motor 17, the second motor 17 is fixedly arranged on one side of the box body 2, the second motor 17 is fixedly connected with a rotating shaft 18 through an output shaft, the rotating shaft 18 penetrates through the box body 2 and extends into the box body 2, a circular plate 19 is fixedly arranged outside the rotating shaft 18, a circulating groove 20 is formed in the circular plate 19, a through groove 21 is formed in the bottom of the barrel body 1, the top of the circular plate 19 penetrates through the groove 21 and extends into the barrel body 1, a second gear 22 is fixedly arranged outside the rotating shaft 18, a vertical rod 13 penetrates through the heating plate 6 and extends into the bottom of the heating plate 6, the vertical rod 13 is connected with the heating plate 6 through a bearing, a second scraping plate 23 is fixedly arranged outside the vertical rod 13, the top of the second scraping plate 23 is in contact with the bottom of the heating plate 6, and a plurality of second fan blades 24 are fixedly arranged outside the vertical rod 13.
Wherein, in order to solve the problem of scattering the inside raw materials of box 2, the inside subassembly that breaks up that is equipped with of box 2, break up the subassembly and be used for scattering the inside raw materials of box 2, the axis of rotation 18 both sides are located respectively to the subassembly that breaks up, break up the subassembly and include pivot 25, pivot 25 locates axis of rotation 18 one side, pivot 25 external fixation is equipped with third gear 26, second gear 22 one side is located to third gear 26 and meshes with second gear 22, pivot 25 external fixation is equipped with a plurality of connecting rods 27, the inside fixed support net 28 that is equipped with of box 2, the support net 28 top is equipped with filter membrane 29, the fixed frame 30 that is equipped with in support net 28 top, fixed frame 30 is located to second gear 22 and third gear 26 are inside.
Wherein, in order to solve the problem of ejection of compact, the fixed discharging pipe 31 that is equipped with in box 2 one side, it has ventilation net 32 to inlay on the discharging pipe 31, axis of rotation 18 runs through ventilation net 32 and passes through the bearing connection with ventilation net 32, the fixed a plurality of third flabellum 33 that are equipped with in axis of rotation 18 outside, the discharging pipe 31 outside is located to the third flabellum 33, the fixed a plurality of third scrapers 34 that are equipped with in axis of rotation 18 outside, a plurality of third scrapers 34 are located the discharging pipe 31 inside and contact with ventilation net 32 one side, the fixed water conservancy diversion otter board 35 that is equipped with in discharging pipe 31 inside, axis of rotation 18 runs through water conservancy diversion otter board 35, the fixed linking frame 36 that is equipped with in discharging pipe 31 one side.
In order to solve the problem of filter pressing raw materials, a negative pressure pump 37 is arranged on one side of a box body 2, a connecting pipe 38 is fixedly arranged on one side of the negative pressure pump 37, the connecting pipe 38 extends into the box body 2, a first supporting seat 39 is fixedly arranged on one side of the box body 2, the negative pressure pump 37 is fixedly arranged at the top of the first supporting seat 39, a second supporting seat 40 is fixedly arranged on one side of the box body 2, a second motor 17 is fixedly arranged at the top of the second supporting seat 40, a feeding hopper 41 is fixedly arranged at the top of the barrel body 1, a protective frame 42 is fixedly arranged at the top of the barrel body 1, the first motor 3 is fixedly arranged inside the protective frame 42, a water outlet pipe 43 is fixedly arranged on one side of the box body 2, an electromagnetic valve 44 is fixedly arranged outside the water outlet pipe 43, and two supporting plates 45 are fixedly arranged at the bottom of the box body 2.
Working principle: when the invention is used, firstly, the invention is connected with an external power supply, then the raw materials to be mixed are put into the cylinder 1 through the feed hopper 41, and simultaneously, the first motor 3 and the heating plate 6 are started, the first motor 3 works to drive the rotating rod 4 to rotate, the rotating rod 4 rotates to drive the mixing frame 5 to rotate, the mixing frame 5 rotates to drive the cross rod 7 to rotate around the center of the rotating rod 4, the cross rod 7 rotates to drive the first gear 8 to move, because the first gear 8 is meshed with the rack 10, the first gear 8 also rotates the first gear 8 while the first gear 8 rotates, the cross rod 7 rotates to drive the cross rod 7 to rotate, the plurality of first sleeves 11 outside the cross rod 7 rotate around the center axis of the cross rod 7, the first sleeves 11 rotate to drive the plurality of mixing rotations outside the first sleeves 11, and simultaneously, the heating plate 6 works to heat the raw materials in the cylinder 1, through the design of the mixing mechanism, the mixing frame 5 and the mixing rod 12 are designed, the mixing frame 5 rotates vertically, the mixing rod 12 rotates horizontally, the raw materials in the cylinder 1 can be mixed in different directions through the rotation of the mixing frame 5 and the mixing rod 12, the raw materials in the cylinder 1 are mixed more uniformly, the vertical rod 13 rotates and simultaneously drives the first sleeve 11 to rotate, the second sleeve 14 rotates and then drives the plurality of first blades 15 outside the second sleeve 14 to rotate, the first blades 15 rotate and can push the raw materials in the box, thereby effectively avoiding the problems of long-time accumulation of the raw materials in the cylinder 1 and the bottom of the cylinder 1, the vertical rod 13 rotates and simultaneously drives the first scraping plate 16 to rotate, and through the design of the first scraping plate 16, the problem that the raw material inside the cylinder 1 adheres to the heating plate 6 due to heating can be avoided;
after the raw materials inside the barrel 1 are mixed, the second motor 17 can be started, the second motor 17 works to drive the rotating shaft 18 to rotate, the rotating shaft 18 rotates to drive the circular plate 19 to rotate, because the top of the circular plate 19 extends into the barrel 1, so when the flow groove 20 on the circular plate 19 rotates to the inside of the barrel 1, raw materials inside the barrel 1 can enter the inside of the box body 2 through the flow groove 20, through the design of the filter membrane 29 and the supporting frame, water inside the raw materials can flow into the bottom of the filter membrane 29 through the filter membrane 29, the negative pressure pump 37 can be started simultaneously, the negative pressure pump 37 works to pump the bottom of the box body 2, the pressure of the bottom of the filter membrane 29 is smaller, the raw materials at the top of the filter membrane 29 can be further pressurized, the water inside the raw materials can be further filtered out, the rotating shaft 18 rotates and drives the second gear 22 to rotate, the third gear 26 is driven to rotate, the rotating shaft 25 rotates to drive the connecting rods 27 to rotate, the raw materials at the top of the filter membrane 29 can be scattered through the filter membrane 29, the raw materials can be driven by the filter membrane 29 to rotate, the second connecting rods, the second heating plate 33 can be blown off the raw materials can be blown off, the raw materials can be blown off from the second heating plate 33 can be blown to the second heating plate 33, and the raw materials can be blown to the second heating plate 33 can be blown to the inside the raw materials, and can be blown to the raw materials, and heated, and the raw materials can be blown and heated, and the raw materials can be blown and heated, and the raw materials can and heated. The rotation shaft 18 rotates and drives the third scraping plate 34 to rotate, the rotation of the third scraping plate 34 can scrape the raw materials absorbed by the third fan blades 33, raw materials are prevented from being accumulated on the ventilation net 32, the absorbed raw materials can be guided through the design of the guide net plate 35, the dried raw materials can be discharged out of the box body 2 through the discharging pipe 31, and a user can collect the dried raw materials at the bottoms of the discharging pipe 31 and the connecting frame 36.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (3)
1. A preparation method of low-smoke low-heat release flame-retardant polyolefin is characterized in that: adding 14-16 kg of magnesium hydroxide powder into 200L of water, adding 70-80 g of sodium hexametaphosphate, stirring and mixing to obtain slurry, adding 400-500 g of disodium hydrogen phosphate and 500-600 g of zinc oxide into 200L of water, uniformly mixing, adding into the slurry, adding 20-50 g of silane coupling agent at 80 ℃, stirring and mixing for 4-6 hours, and filtering and drying to obtain modified magnesium hydroxide;
(2) Uniformly mixing the modified magnesium hydroxide, polyolefin, diethyl aluminum phosphinate and methyl vinyl silicone rubber, wherein the mass ratio of the modified magnesium hydroxide to the polyolefin to the diethyl aluminum phosphinate to the methyl vinyl silicone rubber is 30:65:3: banburying at 2,120 ℃, extruding, granulating, and cooling to obtain low-smoke low-heat release flame-retardant polyolefin;
the preparation device adopted by the preparation method of the low-smoke low-heat release flame-retardant polyolefin comprises a cylinder (1) and a box body (2); the box body (2) is fixedly arranged at the bottom of the barrel body (1), a mixing mechanism is arranged in the barrel body (1) and used for mixing raw materials, and a conveying mechanism is arranged in the box body (2) and used for conveying the materials;
the mixing mechanism comprises a first motor (3), the first motor (3) is fixedly arranged at the top of the cylinder body (1), the first motor (3) is fixedly connected with a rotating rod (4) through an output shaft, the rotating rod (4) penetrates through the cylinder body (1) and extends into the cylinder body (1), a mixing frame (5) is fixedly arranged at the bottom of the rotating rod (4), and a mixing component for mixing raw materials is arranged outside the mixing frame (5);
a heating plate (6) is embedded at the bottom of the cylinder body (1);
the mixing assembly comprises a cross rod (7), the cross rod (7) penetrates through a mixing frame (5) and is movably connected with the mixing frame (5) through a bearing, first gears (8) are fixedly arranged at two ends of the cross rod (7), a circular ring (9) is fixedly arranged on the inner wall of the cylinder body (1), a rack (10) is fixedly arranged at the top of the circular ring (9), the first gears (8) are arranged at the top of the rack (10) and are meshed with the rack (10), a plurality of mixing units are arranged outside the cross rod (7), the mixing units are arranged inside the mixing frame (5), the mixing units comprise first sleeves (11), the first sleeves (11) are fixedly arranged outside the cross rod (7), and a plurality of mixing rods (12) are fixedly arranged outside the first sleeves (11);
the mixing mechanism further comprises a propelling component, the propelling component is used for propelling raw materials in the cylinder body (1), the propelling component comprises a vertical rod (13), the vertical rod (13) is fixedly arranged at the bottom of the mixing frame (5), a second sleeve (14) is fixedly arranged outside the vertical rod (13), a plurality of first fan blades (15) are fixedly arranged outside the second sleeve (14), a first scraping plate (16) is fixedly arranged outside the vertical rod (13), and the bottom of the first scraping plate (16) is contacted with the top of the heating plate (6);
the conveying mechanism comprises a second motor (17), the second motor (17) is fixedly arranged on one side of the box body (2), the second motor (17) is fixedly connected with a rotating shaft (18) through an output shaft, the rotating shaft (18) penetrates through the box body (2) and extends into the box body (2), a circular plate (19) is fixedly arranged outside the rotating shaft (18), a circulating groove (20) is formed in the circular plate (19), a through groove (21) is formed in the bottom of the barrel body (1), the top of the circular plate (19) penetrates through the groove (21) and extends into the barrel body (1), a second gear (22) is fixedly arranged outside the rotating shaft (18), a vertical rod (13) penetrates through the heating plate (6) and extends into the bottom of the heating plate (6), the vertical rod (13) is connected with the heating plate (6) through a bearing, a second scraping plate (23) is fixedly arranged outside the vertical rod (13), the top of the second scraping plate (23) is contacted with the bottom of the heating plate (6), and a plurality of second fan blades (24) are fixedly arranged outside the vertical rod (13).
The utility model discloses a novel box, including box (2), box (2) are inside to be equipped with two components of scattering, the component of scattering is used for scattering the inside raw materials of box (2), two the components of scattering are located axis of rotation (18) both sides respectively, the component of scattering includes pivot (25), pivot (25) are located axis of rotation (18) one side, pivot (25) external fixation is equipped with third gear (26), second gear (22) one side is located in third gear (26) and is meshed with second gear (22), pivot (25) external fixation is equipped with a plurality of joining rods (27), box (2) internal fixation is equipped with supporting network (28), supporting network (28) top is equipped with filter membrane (29), supporting network (28) top is fixed and is equipped with fixed frame (30), fixed frame (30) are all located inside second gear (22) and third gear (26).
2. The method for preparing the low smoke, low heat release flame retardant polyolefin according to claim 1, wherein: the utility model discloses a novel energy-saving box, including box (2) and box, box (2) one side is fixed to be equipped with discharging pipe (31), it has ventilation net (32) to inlay on discharging pipe (31), axis of rotation (18) run through ventilation net (32) and pass through bearing connection with ventilation net (32), axis of rotation (18) external fixation is equipped with a plurality of third flabellums (33), discharging pipe (31) outside is located to third flabellum (33), axis of rotation (18) external fixation is equipped with a plurality of third scraper blade (34), and is a plurality of third scraper blade (34) are located discharging pipe (31) inside and are contacted with ventilation net (32) one side, discharging pipe (31) internal fixation is equipped with water conservancy diversion otter board (35), axis of rotation (18) run through water conservancy diversion otter board (35), discharging pipe (31) one side is fixed and is equipped with connecting frame (36).
3. The method for preparing the low smoke, low heat release flame retardant polyolefin according to claim 2, wherein: a negative pressure pump (37) is arranged on one side of the box body (2), a connecting pipe (38) is fixedly arranged on one side of the negative pressure pump (37), the connecting pipe (38) extends into the box body (2), a first supporting seat (39) is fixedly arranged on one side of the box body (2), the negative pressure pump (37) is fixedly arranged at the top of the first supporting seat (39), a second supporting seat (40) is fixedly arranged on one side of the box body (2), the utility model discloses a novel electric power box, including barrel (2) and first motor, second motor (17) are fixed locate second supporting seat (40) top, barrel (1) top is fixed be equipped with feeder hopper (41), barrel (1) top is fixed be equipped with protection frame (42), first motor (3) are fixed locate inside protection frame (42), box (2) one side is fixed be equipped with outlet pipe (43), outlet pipe (43) external fixation is equipped with solenoid valve (44), box (2) bottom is fixed be equipped with two backup pads (45).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211633317.XA CN115651290B (en) | 2022-12-19 | 2022-12-19 | Preparation method and device of low-smoke low-heat release flame-retardant polyolefin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211633317.XA CN115651290B (en) | 2022-12-19 | 2022-12-19 | Preparation method and device of low-smoke low-heat release flame-retardant polyolefin |
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| CN115651290A CN115651290A (en) | 2023-01-31 |
| CN115651290B true CN115651290B (en) | 2023-06-06 |
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| CN101921426B (en) * | 2010-09-03 | 2012-12-05 | 东华大学 | Composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and preparation method thereof |
| CN212549285U (en) * | 2020-05-18 | 2021-02-19 | 四川省泰信动物药业有限公司 | V type powder mixing arrangement |
| CN212686678U (en) * | 2020-07-17 | 2021-03-12 | 霏润智能科技(深圳)有限公司 | Fully-closed conveying device for combined type unloading station |
| CN214636150U (en) * | 2020-12-25 | 2021-11-09 | 江苏艾特克阻燃材料有限公司 | Prevent blockking up fire retardant and mix machine |
| CN214371476U (en) * | 2021-01-06 | 2021-10-08 | 湖南中威制药有限公司 | Drying cabinet for bulk drug synthesis |
| CN113041913A (en) * | 2021-02-26 | 2021-06-29 | 北京理工大学 | Simple mixing processing device for high polymer material and auxiliary agent screening method thereof |
| CN216115142U (en) * | 2021-09-28 | 2022-03-22 | 赖文静 | Drum-type drying equipment with smash mechanism that looses |
| CN114543467A (en) * | 2022-03-05 | 2022-05-27 | 九江博美莱生物制品有限公司 | Drying device of production animal remedy |
| CN114702749A (en) * | 2022-04-18 | 2022-07-05 | 深圳市锦昊辉实业发展有限公司 | Flame-retardant polyolefin and preparation method thereof |
| CN114800912B (en) * | 2022-05-13 | 2024-05-17 | 业彩环保科技江苏有限公司 | Heat dissipation type low-temperature curing type powder coating production equipment and method |
| CN217943767U (en) * | 2022-06-13 | 2022-12-02 | 中国建筑第二工程局有限公司 | Stirring device for building crack grouting material |
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