Efficient damping material for shock absorption and noise reduction of automobile and preparation method of damping material

Abstract

The invention discloses an efficient damping material for shock absorption and noise reduction of an automobile and a preparation method of the damping material, and relates to the technical field of asphalt damping material preparation. The device comprises a mounting frame, the whole mounting frame is in an L shape, a vertically-arranged vertical plate is rotationally arranged on one side of the top of the mounting frame, a fixing sleeve is fixedly mounted at the vertical end, away from the mounting frame, of the vertical plate, and a processing tank is fixedly arranged in the fixing sleeve; the heating pipe is combined with the second motor and the third motor, so that raw material reaction can be accelerated; a second motor drives a rotating plate to rotate, an eccentric push block drives a moving plate to translate, and a processing tank swings through a toothed plate and a driving gear, so that raw materials are in full contact with a stirring part, the stirring dynamic property and randomness are enhanced, and the limitation of single-shaft stirring is broken through; a third motor drives a first stirring shaft and drives a second stirring shaft through gear transmission, a first stirring piece and a second stirring piece are located at different positions, the second stirring piece takes the edge of the tank into consideration, the stirring range is expanded, and stirring dead angles are eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt damping material preparation, in particular to a damping material for automobiles with high efficiency in shock absorption and noise reduction and a preparation method thereof. Background Art

[0002] Usually noise and vibration are expressed in the form of energy, and damping materials convert this energy into other energy that is harmless to mechanical equipment and human health through their own mechanism, thereby achieving the purpose of reducing noise and vibration; asphalt materials are the most widely used as the matrix of damping materials;

[0003] During the preparation and production process of current asphalt damping pads, the raw materials need to be stirred and mixed. During this process, the current devices basically operate slowly in a reaction tank, and the overall time is relatively long. The current stirring devices basically use single-axis stirring, and a longer time is used to improve the stirring and mixing effect, and the processing efficiency is low.

[0004] In view of the above problems, the inventors propose a damping material for automobiles with high efficiency in shock absorption and noise reduction and a preparation method thereof to solve the above problems. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a damping material with high efficiency in shock and noise reduction for automobiles and a preparation method thereof.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a damping material with high efficiency in shock absorption and noise reduction for automobiles, comprising an asphalt damping substrate, a connecting layer is provided on the surface of the asphalt damping substrate, a wear-resistant layer is provided on the top of the asphalt damping substrate via the connecting layer, and a ZC membrane is provided on the bottom of the asphalt damping substrate via the connecting layer.

[0007] A method for preparing a damping material for automobiles with high efficiency in vibration and noise reduction comprises the following steps:

[0008] S1. Prepare raw materials: including asphalt raw materials, fillers and additives;

[0009] Asphalt materials are generally selected from petroleum asphalt or coal tar asphalt. Petroleum asphalt has better stability and durability, while coal tar asphalt may have higher viscosity. The asphalt grade is determined according to the required performance of the product, such as damping performance, temperature resistance, etc. For example, road petroleum asphalt is mostly selected from grades such as AH-70 (needle penetration between 60-80) for damping pads with certain strength and flexibility requirements.

[0010] Modified asphalt may also be used, such as SBS (styrene-butadiene-styrene block copolymer) modified asphalt. SBS can significantly improve the elasticity and toughness of asphalt and improve the fatigue resistance of the damping pad. During the preparation process, SBS modified asphalt is usually obtained by mechanically stirring and mixing SBS with base asphalt at high temperature (160-180°C).

[0011] Preparation of filling materials: Commonly used filling materials include calcium carbonate, talcum powder, etc.

[0012] The filling material needs to be dried before use to remove the moisture.

[0013] S2. Heating and stirring: Put the asphalt material into the heating equipment to make the asphalt completely melted and have good fluidity, and then slowly add the pre-prepared filling materials and additives;

[0014] S3. Molding: Mold preparation: Select a suitable mold according to the design shape and size of the damping pad. The mold is generally made of metal (such as steel mold), and its inner wall needs to be polished to facilitate demoulding. Before use, the mold must be preheated. The preheating temperature is generally 100-120℃, which can prevent the asphalt mixture from solidifying unevenly due to a sudden drop in temperature when injected into the mold;

[0015] Injection molding: The degassed asphalt mixture is slowly injected into the preheated mold through a pouring device (such as a pouring machine); the pouring process should try to keep the flow of the material smooth to avoid bubbles and local accumulation;

[0016] Demolding and finishing: After molding, the damping pad is demoulded after cooling to a certain temperature (about 40-60℃);

[0017] S4. Performance testing: Perform performance testing on the prepared damping pad, mainly including damping performance testing, mechanical performance testing, etc.;

[0018] Mechanical properties testing includes tensile strength, compressive strength and other tests.

[0019] Preferably, the heating device includes a mounting frame, which is L-shaped as a whole, and a vertically arranged upright plate is rotatably provided on one side of the top of the mounting frame, and a fixing sleeve is fixedly installed on the vertical end of the upright plate away from the mounting frame, and a processing tank is fixedly provided inside the fixing sleeve, and a ring-distributed heating tube is fixedly installed between the fixed sleeve and the outer wall of the processing tank, and a connecting plate in an L-shape is fixedly provided on the top of the upright plate, and an adjustment component is provided between the upright plate and the connecting plate, and a horizontal end of the connecting plate is located directly above the processing tank and a cover plate is rotatably provided on the lower surface, and the bottom of the cover plate coincides with the top of the processing tank, a driving shaft is fixedly provided on the side of the upright plate away from the processing tank and the driving shaft passes through the mounting frame, and a driving gear is fixedly provided on the end of the driving shaft away from the processing tank, and a driving component is provided under the driving gear.

[0020] Preferably, the adjustment component includes a groove, which is opened inside the vertical plate, and a vertically arranged screw rod is rotatably provided at the middle end of the groove, and a movable plate that moves up and down is threadedly inserted on the screw rod, and vertically arranged vertical poles are fixedly provided at both ends of the movable plate, and the top of the vertical pole passes through the vertical plate and is fixedly provided on the connecting plate, and a first motor is fixedly provided at the bottom of the outer wall of the vertical plate near the screw rod, and the output end of the first motor is coaxially fixed on the screw rod.

[0021] Preferably, the adjusting assembly includes a tooth plate, which is meshed and arranged below the driving gear, and a vertically arranged movable plate is fixedly provided at the bottom of the tooth plate, and a vertically arranged movable slot is penetrated through the movable plate, and an L-shaped support plate is fixedly provided at the bottom of the movable plate on the mounting frame, a rotating shaft is rotatably provided at one vertical end of the support plate, a rotating plate is fixedly provided at one end of the rotating shaft close to the mounting frame, a push block is fixedly provided at the eccentric part of the rotating plate, and the top of the push block is movably inserted in the movable slot; a second motor is fixedly provided at the top of the support frame, and the output end of the second motor is coaxially fixed on the rotating shaft, and a U-shaped support frame is movably inserted at the bottom of the movable plate, and both ends of the support frame are fixedly provided on the mounting frame.

[0022] Preferably, the interior of the cover plate is hollow, a first stirring shaft is inserted through the middle end of the cover plate, a plurality of first stirring members evenly spaced and fixedly arranged on the first stirring shaft are located below the cover plate, second stirring shafts are rotatably inserted at both ends of the first stirring shaft on the cover plate, a plurality of second stirring members evenly spaced and fixedly arranged on the second stirring shaft are located below the cover plate; the first stirring member and the second stirring member are cross-arranged up and down; a driving gear is fixedly arranged between the first stirring shaft inside the cover plate, and a driven gear meshing with the driving gear is fixedly arranged at one end of the two second stirring shafts inside the cover plate, a third motor is fixedly arranged on the top of the connecting plate, and the output end of the third motor is coaxially fixed on the first stirring shaft; a U-shaped scraper is fixedly arranged at the bottom of the first stirring shaft, and a vertical end of the scraper is against the inner wall of the processing tank.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The heating tube in the present invention is combined with the second and third motors to accelerate the reaction of the raw materials; the second motor drives the rotating plate to rotate, the eccentric push block drives the moving plate to translate, and the processing tank is allowed to swing through the tooth plate and the driving gear, so that the raw materials and the stirring element are fully in contact, the stirring dynamics and randomness are enhanced, and the limitation of single-axis stirring is broken; at the same time, the double-axis coordinated stirring: the third motor drives the first stirring shaft, and drives the second stirring shaft through gear transmission. The first and second stirring elements are located at different positions, and the second stirring element takes into account the edge of the tank, thereby expanding the stirring range and eliminating the stirring dead angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the damping material of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of the mounting frame of the present invention.

[0028] Figure 3 It is a schematic diagram of the vertical plate structure of the present invention.

[0029] Figure 4 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0030] Figure 5 It is a schematic diagram of the cover plate structure of the present invention.

[0031] Figure 6 It is a schematic diagram of the internal structure of the vertical plate of the present invention.

[0032] Figure 7 It is a schematic diagram of the internal structure of the cover plate of the present invention.

[0033] In the figure: 1. mounting frame; 11. vertical plate; 12. connecting plate; 13. cover plate; 14. fixing sleeve; 15. processing tank; 16. heating tube; 2. groove; 21. screw rod; 22. movable plate; 23. vertical rod; 24. first motor; 3. driving shaft; 31. driving gear; 32. tooth plate; 33. moving plate; 331. supporting frame; 34. moving groove; 35. supporting plate; 36. rotating shaft; 37. rotating plate; 38. pushing block; 39. second motor; 4. first stirring shaft; 41. first stirring member; 42. second stirring shaft; 43. second stirring member; 44. driving gear; 45. driven gear; 46. scraper; 47. third motor; 5. asphalt damping substrate; 51. wear-resistant layer; 52. ZC film. DETAILED DESCRIPTION

[0034] 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.

[0035] like Figure 1-7 As shown, the present invention provides a damping material for automobiles with high efficiency in shock absorption and noise reduction, including an asphalt damping substrate 5, a connecting layer is provided on the surface of the asphalt damping substrate 5, and the connecting layer can specifically be made of an adhesive. A wear-resistant layer 51 is connected to the top of the asphalt damping substrate 5 through the connecting layer, and the wear-resistant layer 51 can be made of melamine resin. A ZC film 52 is connected to the bottom of the asphalt damping substrate 5 through the connecting layer. The ZC film 52 will naturally degrade during the assembly process of the damping material and other products, and will not have adverse effects on the damping material and the damping effect.

[0036] A method for preparing a damping material for automobiles with high efficiency in vibration and noise reduction, characterized in that it comprises the following steps:

[0037] S1. Prepare raw materials: including asphalt raw materials, fillers and additives;

[0038] Asphalt materials are generally selected from petroleum asphalt or coal tar asphalt. Petroleum asphalt has better stability and durability, while coal tar asphalt may have higher viscosity. The asphalt grade is determined according to the required performance of the product, such as damping performance, temperature resistance, etc. For example, road petroleum asphalt is mostly selected from grades such as AH-70 (needle penetration between 60-80) for damping pads with certain strength and flexibility requirements.

[0039] Modified asphalt may also be used, such as SBS (styrene-butadiene-styrene block copolymer) modified asphalt. SBS can significantly improve the elasticity and toughness of asphalt and improve the fatigue resistance of the damping pad. During the preparation process, SBS modified asphalt is usually obtained by mechanically stirring and mixing SBS with base asphalt at high temperature (160-180°C).

[0040] Preparation of filling materials: Common filling materials include calcium carbonate, talcum powder, etc. Calcium carbonate is relatively cheap and can increase the hardness and volume of the damping pad. Talc has good lubricity and dispersibility, making the material mixing more uniform. The particle size of the filling material is generally between tens of microns and hundreds of microns. For example, the particle size of calcium carbonate powder can be selected between 2-50μm. Such a particle size helps to fill the gaps in the asphalt and improve the density of the damping pad.

[0041] The filling material needs to be dried before use to remove the moisture.

[0042] S2. Heating and stirring: Put the asphalt material into the heating equipment to make the asphalt completely melted and have good fluidity, and then slowly add the pre-prepared filling materials and additives;

[0043] S3. Molding: Mold preparation: Select a suitable mold according to the design shape and size of the damping pad. The mold is generally made of metal (such as steel mold), and its inner wall needs to be polished to facilitate demoulding. Before use, the mold must be preheated. The preheating temperature is generally 100-120℃, which can prevent the asphalt mixture from solidifying unevenly due to a sudden drop in temperature when injected into the mold;

[0044] Injection molding: The degassed asphalt mixture is slowly injected into the preheated mold through a pouring device (such as a pouring machine). During the pouring process, the material flow should be kept as smooth as possible to avoid bubbles and local accumulation. After the material fills the mold, the mold is placed on a molding device such as a flat vulcanizer for pressure molding. The pressure is generally controlled at 5-10MPa, the temperature is maintained at 140-160℃, and the duration depends on the thickness and size of the damping pad, generally 10-30 minutes. This can make the damping pad further compact under the action of pressure and temperature, and improve its shape accuracy and performance.

[0045] Demolding and trimming: After molding, the damping pad is demoulded after cooling to a certain temperature (about 40-60℃). The damping pad after demoulding may have some burrs or uneven areas, which need to be trimmed. The burrs can be removed with tools such as knives, and the uneven surface can be processed by grinding and other methods to make the appearance and size of the damping pad meet the requirements;

[0046] S4. Performance testing: The prepared damping pad is tested for performance, mainly including damping performance testing, mechanical performance testing, etc. The damping performance test can be performed by using a damping factor tester to measure the loss factor of the damping pad at different frequencies and temperatures. For example, within the frequency range of 1-200Hz and the temperature range of -20-60℃, observe the change in loss factor. A qualified damping pad should have a higher loss factor within a certain frequency and temperature range to effectively consume vibration energy.

[0047] Mechanical property testing includes tensile strength, compression strength and other tests. The damping pad is tested for tensile strength using a universal material testing machine in accordance with relevant standards (such as GB / T528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber"), and the tensile speed is generally set to 500mm / min. A qualified damping pad should meet the tensile strength and compression strength and other indicators required by the design.

[0048] The heating device includes a mounting frame 1, which is L-shaped as a whole. A vertically arranged upright plate 11 is rotatably provided on one side of the top of the mounting frame 1. A fixing sleeve 14 is fixedly provided on the vertical end of the upright plate 11 away from the mounting frame 1. A processing tank 15 is fixedly provided inside the fixing sleeve 14. A heating tube 16 distributed in a ring is fixedly provided between the inner part of the fixing sleeve 14 and the outer wall of the processing tank 15. A connecting plate 12 in an L-shape is fixedly provided on the top of the upright plate 11. An adjusting component is provided between the upright plate 11 and the connecting plate 12. A horizontal end of the connecting plate 12 is located directly above the processing tank 15 and a cover plate 13 is rotatably provided on the lower surface. The bottom of the cover plate 13 coincides with the top of the processing tank 15. A driving shaft 3 is fixedly provided on the side of the upright plate 11 away from the processing tank 15 and the driving shaft 3 passes through the mounting frame 1. A driving gear 31 is fixedly provided on the end of the driving shaft 3 away from the processing tank 15, and a driving component is provided below the driving gear 31.

[0049] The adjusting component includes a groove 2, which is opened inside the vertical plate 11. A vertically arranged screw rod 21 is rotatably provided at the middle end inside the groove 2. A movable plate 22 that moves up and down is threadedly inserted on the screw rod 21. Vertically arranged vertical rods 23 are fixed at both ends of the movable plate 22. The top of the vertical rod 23 passes through the vertical plate 11 and is fixed on the connecting plate 12. A first motor 24 is fixed at the bottom of the outer wall of the vertical plate 11 near the screw rod 21, and the output end of the first motor 24 is coaxially fixed on the screw rod 21.

[0050] By adopting the above technical solution, the first motor 24 can drive the screw rod 21 to control the connecting plate 12 so that the cover plate 13 moves up and down. In subsequent cleaning, the cover plate 13 can be separated and cleaned, and the cleaning can be completed more carefully and conveniently.

[0051] The adjustment assembly includes a tooth plate 32, which is meshed and arranged below the driving gear 31. A vertically arranged moving plate 33 is fixedly provided at the bottom of the tooth plate 32, and a vertically arranged moving groove 34 is penetrated through the moving plate 33. An L-shaped support plate 35 is fixedly provided at the bottom of the moving plate 33 on the mounting frame 1. A rotating shaft 36 is rotatably provided at one end of the support plate 35. A rotating plate 37 is fixedly provided at one end of the rotating shaft 36 close to the mounting frame 1. A push block 38 is fixedly provided at the eccentric position of the rotating plate 37, and the top of the push block 38 is movably inserted in the moving groove 34.

[0052] By adopting the above technical solution, the push block 38 in the adjustment component can eventually make the driving shaft 3 drive the processing tank 15 to swing back and forth continuously. At this time, the raw materials waiting to be processed in the processing tank 15 will be pushed, so that the raw materials can be more fully in contact with the stirring element, and at the same time make the processing tank 15 more chaotic.

[0053] A second motor 39 is fixedly mounted on the top of the support frame 331 , and an output end of the second motor 39 is coaxially fixedly mounted on the rotating shaft 36 . A U-shaped support frame 331 is movably inserted at the bottom of the movable plate 33 , and both ends of the support frame 331 are fixedly mounted on the mounting frame 1 .

[0054] By adopting the above technical solution, the second motor 39 can provide power for the rotation of the rotating shaft 36, which is convenient for the staff to operate. The support frame 331 can translate the movement of the movable plate 33 to ensure the stability of the overall movement of the device.

[0055] The interior of the cover plate 13 is hollow, and a first stirring shaft 4 is inserted through the middle end of the cover plate 13. The first stirring shaft 4 is located below the cover plate 13 and is fixed with a plurality of first stirring members 41 distributed at equal intervals. Second stirring shafts 42 are rotatably inserted at both ends of the first stirring shaft 4 on the cover plate 13. The second stirring shaft 42 is located below the cover plate 13 and is fixed with a plurality of second stirring members 43 distributed at equal intervals.

[0056] By adopting the above technical solution, the first stirring member 41 and the second stirring member 43 can perform a wide range of stirring operations in the processing tank 15 .

[0057] The first stirring member 41 and the second stirring member 43 are arranged to cross each other in an up-and-down manner.

[0058] By adopting the above technical solution, such an arrangement avoids deviations during subsequent rotations, causing collisions and affecting the stirring process.

[0059] A driving gear 44 is fixedly disposed between the first stirring shaft 4 located inside the cover plate 13 , and a driven gear 45 meshing with the driving gear 44 is fixedly disposed at one end of the two second stirring shafts 42 located inside the cover plate 13 , and a third motor 47 is fixedly disposed on the top of the connecting plate 12 , and an output end of the third motor 47 is coaxially fixedly disposed on the first stirring shaft 4 .

[0060] By adopting the above technical solution, the driving gear 44 and the driven gear 45 can make the first stirring shaft 4 and the two second stirring shafts 42 rotate simultaneously, thereby improving the overall working stability of the device.

[0061] A U-shaped scraper 46 is fixedly provided at the bottom of the first stirring shaft 4 , and one vertical end of the scraper 46 abuts against the inner wall of the processing tank 15 .

[0062] By adopting the above technical solution, the scraper 46 can clean the residue attached to the processing tank 15 as the first stirring shaft 4 rotates.

[0063] Working principle: First, the first motor 24 is set to drive the screw rod 21 to drive the movable plate 22 and the vertical rod 23 to control the overall up and down movement between the connecting plate 12 and the cover plate 13, and move the cover plate 13 upward. At this time, the staff can put the raw materials required for hot stirring into the processing tank 15, and then the first motor 24 controls the screw rod 21 to drive the cover plate 13 to move downward as a whole. At this time, the downwardly moved cover plate 13 seals the top of the processing tank 15 to prevent leakage from the top during the stirring process. At this time, the second motor 39 and the third motor 47 can work, and the heating tube 16 works at the same time. When the heating tube 16 works, it will heat the inside of the processing tank 15, so that the raw materials can be hot stirred;

[0064] First, the second motor 39 will drive the rotating plate 37 to rotate through the rotating shaft 36, and the push block 38 at the eccentric position of the rotating rotating plate 37 will push the movable plate 33 to move through the moving groove 34. As the rotating shaft 36 and the rotating plate 37 are continuously rotated under the drive of the second motor 39, the push block 38 at the eccentric position of the rotating plate 37 will continuously move from one end of the moving groove 34 to the other end. At this time, the movable plate 33 will be pushed by the push block 38 to repeatedly translate left and right. At the same time, the toothed plate 32 fixed on the top of the movable plate 33 will drive the driving gear 31 to rotate back and forth left and right continuously. At this time, the driving gear 31 will drive the vertical plate 11 through the driving shaft 3 to make the entire fixed sleeve 14 and the processing tank 15 swing repeatedly. At this time, the raw materials waiting for processing in the processing tank 15 will be pushed, so that the raw materials are more fully in contact with the stirring member, and at the same time, the processing tank 15 is made more chaotic.

[0065] The third motor 47 will drive the first stirring shaft 4 to rotate. At this time, the rotating first stirring shaft 4 will drive the first stirring member 41 at the bottom to rotate. At the same time, the driving gear 44 fixedly set on the first stirring shaft 4 will drive the driven gear 45 meshed at both ends to rotate during rotation. At this time, the driven gear 45 will drive the second stirring shaft 42 to rotate. The second stirring member 43 fixedly set on the second stirring shaft 42 will stir and mix between the gaps of the first stirring member 41 at the same time. At the same time, since the second stirring member 43 is set to stir at the edge of the processing tank 15, the raw materials in the processing tank 15 are stirred more widely, and its stirring range is increased. At the same time, in conjunction with the above process, the processing tank 15 is repeatedly shaken during the stirring work, so that the mixed raw materials are continuously poured into contact with the stirring member, thereby further improving the stirring and mixing effect, reducing the overall mixing efficiency, and improving production efficiency.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A highly efficient damping and noise reducing damping material for automobiles, comprising an asphalt damping substrate (5), characterized in that: A connecting layer is provided on the surface of the asphalt damping substrate (5), a wear-resistant layer (51) is provided on the top of the asphalt damping substrate (5) via the connecting layer, and a ZC membrane (52) is provided on the bottom of the asphalt damping substrate (5) via the connecting layer.

2. A method for preparing a damping material for automobiles with high efficiency in shock absorption and noise reduction, characterized in that: The steps include: S1. Prepare raw materials: including asphalt raw materials, fillers and additives; Asphalt material selection generally uses petroleum asphalt or coal tar asphalt; petroleum asphalt has better stability and durability, while coal tar asphalt may have higher viscosity; the asphalt grade is determined based on the required performance of the product, such as damping performance, temperature resistance, etc.; for example, road petroleum asphalt often uses grades such as AH-70 (needle penetration between 60-80) for damping pads with certain strength and flexibility requirements. Modified asphalt may also be used, such as SBS (styrene-butadiene-styrene block copolymer) modified asphalt. SBS can significantly improve the elasticity and toughness of asphalt and improve the fatigue resistance of damping pads. In the preparation process, SBS modified asphalt is usually obtained by mechanically stirring SBS and base asphalt at high temperature (160-180°C); Preparation of filling materials: Commonly used filling materials include calcium carbonate, talcum powder, etc.; The filling material needs to be dried before use to remove the moisture; S2. Heating and stirring: Put the asphalt material into the heating equipment to make the asphalt completely melted and have good fluidity, and then slowly add the pre-prepared filling materials and additives; S3. Molding: Mold preparation: Select a suitable mold according to the design shape and size of the damping pad. The mold is generally made of metal (such as steel mold), and its inner wall needs to be polished to facilitate demoulding. Before use, the mold must be preheated. The preheating temperature is generally 100-120℃, which can prevent the asphalt mixture from solidifying unevenly due to a sudden drop in temperature when injected into the mold; Injection molding: The degassed asphalt mixture is slowly injected into the preheated mold through a pouring device (such as a pouring machine); the pouring process should try to keep the flow of the material smooth to avoid bubbles and local accumulation; Demolding and finishing: After molding, the damping pad is demoulded after cooling to a certain temperature (about 40-60°C); S4. Performance testing: Perform performance testing on the prepared damping pad, mainly including damping performance testing, mechanical performance testing, etc.; Mechanical properties testing includes tensile strength, compressive strength and other tests.

3. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles according to claim 2, characterized in that: The heating device comprises a mounting frame (1), the mounting frame (1) being arranged in an L-shape as a whole, a vertically arranged upright plate (11) being rotatably arranged on one side of the top of the mounting frame (1), a fixed sleeve (14) being fixedly arranged on one end of the upright plate (11) away from the vertical end of the mounting frame (1), a processing tank (15) being fixedly arranged inside the fixed sleeve (14), a heating pipe (16) being arranged in an annular distribution being fixedly arranged inside the fixed sleeve (14) and between the outer wall of the processing tank (15), and an L-shaped connecting plate (12) being fixedly arranged on the top of the upright plate (11) An adjusting assembly is provided between the vertical plate (11) and the connecting plate (12); a horizontal end of the connecting plate (12) is located directly above the processing tank (15) and a cover plate (13) is rotatably provided on the lower surface; the bottom of the cover plate (13) coincides with the top of the processing tank (15); a driving shaft (3) is fixedly provided on the side of the vertical plate (11) away from the processing tank (15) and the driving shaft (3) passes through the mounting frame (1); a driving gear (31) is fixedly provided on the end of the driving shaft (3) away from the processing tank (15); and a driving assembly is provided below the driving gear (31).

4. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles as claimed in claim 3, characterized in that: The adjustment component comprises a groove (2), wherein the groove (2) is provided inside the vertical plate (11), a vertically arranged screw rod (21) is rotatably provided at the middle end inside the groove (2), a movable plate (22) which is movable up and down is threadedly inserted on the screw rod (21), vertically arranged vertical rods (23) are fixedly provided at both ends of the movable plate (22), the top of the vertical rod (23) passes through the vertical plate (11) and is fixedly provided on the connecting plate (12), a first motor (24) is fixedly provided at the bottom of the outer wall of the vertical plate (11) near the screw rod (21), and the output end of the first motor (24) is coaxially fixedly provided on the screw rod (21).

5. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles as claimed in claim 3, characterized in that: The adjustment assembly comprises a tooth plate (32), the tooth plate (32) is meshingly arranged below the driving gear (31), a vertically arranged moving plate (33) is fixedly arranged at the bottom of the tooth plate (32), a vertically arranged moving groove (34) is penetrated through the moving plate (33), an L-shaped supporting plate (35) is fixedly arranged at the bottom of the moving plate (33) on the mounting frame (1), a rotating shaft (36) is rotatably arranged at one end of the supporting plate (35), a rotating plate (37) is fixedly arranged at one end of the rotating shaft (36) close to the mounting frame (1), a pushing block (38) is fixedly arranged at an eccentric position of the rotating plate (37), and the top of the pushing block (38) is movably inserted in the moving groove (34).

6. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles as claimed in claim 5, characterized in that: A second motor (39) is fixedly arranged on the top of the support frame (331), and an output end of the second motor (39) is coaxially fixedly arranged on the rotating shaft (36). A U-shaped support frame (331) is movably inserted at the bottom of the movable plate (33), and both ends of the support frame (331) are fixedly arranged on the mounting frame (1).

7. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles as claimed in claim 3, characterized in that: The interior of the cover plate (13) is hollow, a first stirring shaft (4) is inserted through the middle end of the cover plate (13), the first stirring shaft (4) is fixedly provided with a plurality of first stirring members (41) arranged at equal intervals below the cover plate (13), second stirring shafts (42) are rotatably inserted at both ends of the first stirring shaft (4) on the cover plate (13), and the second stirring shaft (42) is fixedly provided with a plurality of second stirring members (43) arranged at equal intervals below the cover plate (13).

8. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles as claimed in claim 7, characterized in that: The first stirring member (41) and the second stirring member (43) are arranged in an up-and-down cross arrangement.

9. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles as claimed in claim 8, characterized in that: A driving gear (44) is fixedly disposed between the first stirring shaft (4) located inside the cover plate (13), a driven gear (45) meshing with the driving gear (44) is fixedly disposed at one end of the two second stirring shafts (42) located inside the cover plate (13), a third motor (47) is fixedly disposed on the top of the connecting plate (12), and an output end of the third motor (47) is coaxially fixedly disposed on the first stirring shaft (4).

10. The method for preparing a high-efficiency shock-absorbing and noise-reducing damping material for automobiles according to claim 9, characterized in that: A U-shaped scraper (46) is fixedly provided at the bottom of the first stirring shaft (4), and one vertical end of the scraper (46) abuts against the inner wall of the processing tank (15).

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