阅读说明：本技术 一种减震套用橡胶材料加工工艺 (Processing technology of rubber material for damping sleeve ) 是由 何则久 邱振平 于 2020-07-23 设计创作，主要内容包括：本发明公开了一种减震套用橡胶材料加工工艺,包括氯磺化聚乙烯橡胶80-100份、改性氯磺化聚乙烯橡胶1-6份、环氧化天然橡胶50-55份、防老剂6-12份、抗氧化剂1-2份、填料25-35份、补强剂30-60份、增粘树脂5-10份、硫化剂2-4份、硬脂酸1-3份、促进剂1-3份、交联剂1-2份和聚二醇硬脂酸酯2-4份；现将密炼机通水预热,然后取硫化聚乙烯橡胶、改性氯磺化聚乙烯橡胶、环氧化天然橡胶、增粘树脂、补强剂、防老剂、硬脂酸和促进剂的混合物投入密炼机内塑炼7-10min,之后加入填料密炼2-3min；然后加入聚二醇硬脂酸酯和交联剂密炼12-15min；最后加入促进剂密炼3-5min得混炼胶密炼料；对得到的混炼胶密炼料进行打卷去除气泡,然后通过开炼机混炼和硫化即可的橡胶材料。(The invention discloses a processing technology of a rubber material for a shock-absorbing sleeve, which comprises 80-100 parts of chlorosulfonated polyethylene rubber, 1-6 parts of modified chlorosulfonated polyethylene rubber, 50-55 parts of epoxidized natural rubber, 6-12 parts of an anti-aging agent, 1-2 parts of an antioxidant, 25-35 parts of a filler, 30-60 parts of a reinforcing agent, 5-10 parts of tackifying resin, 2-4 parts of a vulcanizing agent, 1-3 parts of stearic acid, 1-3 parts of an accelerator, 1-2 parts of a cross-linking agent and 2-4 parts of polyglycol stearate; preheating an internal mixer by introducing water, putting a mixture of vulcanized polyethylene rubber, modified chlorosulfonated polyethylene rubber, epoxidized natural rubber, tackifying resin, a reinforcing agent, an anti-aging agent, stearic acid and an accelerator into the internal mixer for plastication for 7-10min, and then adding a filler for banburying for 2-3 min; then adding polyglycol stearate and a cross-linking agent for banburying for 12-15 min; finally adding an accelerant to carry out banburying for 3-5min to obtain a mixed rubber banburying material; and (3) rolling the obtained mixed rubber internal mixing material to remove air bubbles, and then mixing and vulcanizing the obtained rubber material by an open mill.)

1. A rubber material for a damping sleeve is characterized in that: the modified chlorosulfonated polyethylene rubber material comprises 80-100 parts of chlorosulfonated polyethylene rubber, 1-6 parts of modified chlorosulfonated polyethylene rubber, 50-55 parts of epoxidized natural rubber, 6-12 parts of an anti-aging agent, 1-2 parts of an antioxidant, 25-35 parts of a filler, 30-60 parts of a reinforcing agent, 5-10 parts of tackifying resin, 2-4 parts of a vulcanizing agent, 1-3 parts of stearic acid, 1-3 parts of an accelerator, 1-2 parts of a cross-linking agent and 2-4 parts of polyglycol stearate.

2. The rubber material for the shock-absorbing sleeve as set forth in claim 1, wherein: the epoxidized natural rubber is epoxidized natural rubber with an epoxidation degree of 50%.

3. The rubber material for the shock-absorbing sleeve as set forth in claim 1, wherein: the fillers are N330 carbon black and N550 carbon black.

4. The rubber material for the shock-absorbing sleeve as set forth in claim 1, wherein: the anti-aging agent is anti-aging agent AW, anti-aging agent RD or anti-aging agent CPPD.

5. The rubber material for the shock-absorbing sleeve as set forth in claim 1, wherein: the vulcanizing agent is insoluble sulfur.

6. The rubber material for the shock-absorbing sleeve as set forth in claim 1, wherein: the accelerator is a sulfenamide accelerator.

7. The process for processing the rubber material for the shock-absorbing sleeve according to any one of claims 1 to 6, wherein: the method comprises the following steps:

s1, preheating an internal mixer through water, controlling the temperature of a working chamber of the internal mixer to be less than 50 ℃, controlling the rotating speed to be 30-50 r/min, then putting a mixture of vulcanized polyethylene rubber, modified chlorosulfonated polyethylene rubber, epoxidized natural rubber, sulfur, tackifying resin, reinforcing agent, anti-aging agent, stearic acid and accelerator into the internal mixer for plastication for 7-10min, and then adding filler for banburying for 2-3 min; then adding polyglycol stearate and a cross-linking agent for banburying for 12-15 min; finally adding an accelerant to carry out banburying for 3-5min to obtain a mixed rubber banburying material;

s2, cooling the internal mixing material of the mixed rubber obtained in the step 1 to reduce the temperature to below 45 ℃, detecting the hardness, strength and elongation of the internal mixing material of the mixed rubber in the step 1, and reserving the qualified internal mixing material of the mixed rubber;

s3, putting the qualified mixed rubber refined material in the step S2 into a material opening machine, adding a vulcanizing agent, keeping the temperature of a working chamber of the material opening machine at 60-70 ℃ after the vulcanizing agent is completely mixed, thinly passing for 5-10 times, and discharging to obtain the material opening machine; then cutting the open mill materials, placing the cut open mill materials in a mould, and rolling for 5-7 times to ensure that bubbles in the open mill materials are discharged;

s4, placing the rolled open mill material in the step S3 in a mold of vulcanization equipment, pressurizing and vulcanizing, keeping the vulcanization temperature at 125-130 ℃, the vulcanization pressure at 25-30Mpa, and the vulcanization time at 25-30min to obtain rubber compound;

s5, placing the mixed rubber in the step S4 in a mould to manufacture a damping sleeve;

s6, trimming the finished product damping sleeve in the S5, measuring static rigidity and dynamic rigidity under 100Hz +/-0.05 mm by using an elastic testing machine, dividing the static rigidity by the dynamic rigidity to obtain dynamic multiplying power, wherein the dynamic multiplying power is less than or equal to 1.3, and thus obtaining a qualified dynamic multiplying power finished product.

8. The processing technology of the rubber material for the damping sleeve as claimed in claim 7, is characterized in that: the internal mixer in the step 1 comprises a heating box (1), a cooling box (2) and a feeding hopper (3), wherein a smelting box (4) is fixed on the back of the heating box (1), and heating wires are arranged on a bent disc on the inner wall of the heating box (1); the top of the heating box (1) is provided with a feed hopper (3), and the feed hopper (3) is connected with the smelting box (4) through a feed pipe; a cooling box (2) is arranged below the heating box (1), and supporting legs are fixed at the bottom of the cooling box (2); the cooling box (2) comprises an outer box (5) and an inner box (6), the inner box (6) is arranged in the outer box (5) and fixed on the front surface of the outer box (5) together with the inner box (6), and the front surface of the outer box (5) is hinged with a door plate (7); a water inlet pipe (8) is arranged on the outer box (5) close to the top, and a water outlet pipe (9) is arranged on the outer box (5) close to the bottom; the smelting box (4) is connected with the inner box (6) through a discharge pipe; feed hopper (3) rotate and are provided with intermeshing's crushing roller (10), the lateral wall of feed hopper (3) is fixed with the backup pad, is fixed with crushing motor (11) in the backup pad, and the output of crushing motor (11) is fixed with the shaft coupling, and the shaft coupling is connected with the pivot on one of them crushing roller (10), is fixed with the meshing tooth in the pivot.

9. The processing technology of the rubber material for the damping sleeve as claimed in claim 8, wherein the processing technology comprises the following steps: a mounting plate is fixed on the back of the smelting box (4), an air cylinder (12) is fixed on the mounting plate, a cleaning window is formed in the back of the heating box (1), heat-insulating cotton (13) is arranged on the inner wall of the cleaning window, and a sealing plate (14) is arranged on the cleaning window; and a moving rod is fixed at the output end of the air cylinder (12) and is connected with the sealing plate (14).

10. The processing technology of the rubber material for the damping sleeve as claimed in claim 9, wherein the processing technology comprises the following steps: a material turning plate (15) is rotatably arranged on the sealing plate (14) in the smelting box (4), synchronous wheels (16) are fixed on the material turning plate (15), and the synchronous wheels (16) are connected through a synchronous belt (17); and a material turning motor (18) is fixed on the outer side of the sealing plate (14), and the output end of the material turning motor (18) is connected with a rotating shaft on one material turning plate (15) through an output shaft.

Technical Field

The invention relates to the field of engine oil correlation, in particular to a rubber material for a damping sleeve and a processing technology thereof.

Background

The shock absorber bushing is used on an automobile suspension system and used for supporting the quality of a frame, relieving the vibration and impact of the unevenness of a road to an automobile, quickly attenuating the vibration, improving the driving comfort, reducing the stress of each part of an automobile body and prolonging the service life of the automobile.

In order to support the mass of a frame, the automobile bushing requires a bushing rubber material to have high hardness and high rigidity, and the excellent damping and noise reduction performance requires the rubber material to have good bottom dynamic power; meanwhile, because the automobile can generate high temperature and vibration, the rubber material is required to have high temperature resistance and thermal aging resistance, but the natural rubber does not have the characteristics, so that the rubber material for the damping sleeve and the processing technology thereof are provided to solve the problems.

Disclosure of Invention

The invention aims to provide a rubber material for a damping sleeve and a processing technology thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a rubber material for a damping sleeve comprises 80-100 parts of chlorosulfonated polyethylene rubber, 1-6 parts of modified chlorosulfonated polyethylene rubber, 50-55 parts of epoxidized natural rubber, 6-12 parts of an anti-aging agent, 1-2 parts of an antioxidant, 25-35 parts of a filler, 30-60 parts of a reinforcing agent, 5-10 parts of tackifying resin, 2-4 parts of a vulcanizing agent, 1-3 parts of stearic acid, 1-3 parts of an accelerator, 1-2 parts of a crosslinking agent and 2-4 parts of polyglycol stearate.

Preferably, the epoxidized natural rubber is an epoxidized natural rubber having an epoxidation degree of 50%.

Preferably, the fillers are N330 carbon black and N550 carbon black.

Preferably, the anti-aging agent is anti-aging agent AW, anti-aging agent RD or anti-aging agent CPPD.

Preferably, the vulcanizing agent is insoluble sulfur.

Preferably, the accelerator is a sulfenamide accelerator.

As a preferred technical scheme, the invention provides a processing technology of a rubber material for a damping sleeve, which comprises the following steps:

s1, preheating an internal mixer through water, controlling the temperature of a working chamber of the internal mixer to be less than 50 ℃, controlling the rotating speed to be 30-50 r/min, then putting a mixture of vulcanized polyethylene rubber, modified chlorosulfonated polyethylene rubber, epoxidized natural rubber, sulfur, tackifying resin, reinforcing agent, anti-aging agent, stearic acid and accelerator into the internal mixer for plastication for 7-10min, and then adding filler for banburying for 2-3 min; then adding polyglycol stearate and a cross-linking agent for banburying for 12-15 min; finally adding an accelerant to carry out banburying for 3-5min to obtain a mixed rubber banburying material;

s2, cooling the internal mixing material of the mixed rubber obtained in the step 1 to enable the temperature to be reduced to be lower than 45 ℃, then detecting the hardness, the strength and the elongation of the internal mixing material of the mixed rubber obtained in the step 1, and reserving the qualified internal mixing material of the mixed rubber.

S3, putting the qualified mixed rubber refined material in the step S2 into a material opening machine, adding a vulcanizing agent, keeping the temperature of a working chamber of the material opening machine at 60-70 ℃ after the vulcanizing agent is completely mixed, thinly passing for 5-10 times, and discharging to obtain the material opening machine; then cutting the open mill materials, placing the cut open mill materials in a mould, and rolling for 5-7 times to ensure that bubbles in the open mill materials are discharged.

S4, placing the rolled open mill material in the step S3 in a mold of vulcanization equipment, pressurizing and vulcanizing, keeping the vulcanization temperature at 125-130 ℃, the vulcanization pressure at 25-30Mpa and the vulcanization time at 25-30min to obtain the rubber compound.

S5, placing the mixed rubber in the step S4 in a mould to manufacture the damping sleeve.

S6, trimming the finished product damping sleeve in the S5, measuring static rigidity and dynamic rigidity under 100Hz +/-0.05 mm by using an elastic testing machine, dividing the static rigidity by the dynamic rigidity to obtain dynamic multiplying power, wherein the dynamic multiplying power is less than or equal to 1.3, and thus obtaining a qualified dynamic multiplying power finished product.

Preferably, the internal mixer in the step 1 comprises a heating box, a cooling box and a feeding hopper, wherein a smelting box is fixed on the back of the heating box, and an electric heating wire is arranged on a bending disc on the inner wall of the heating box; the top of the heating box is provided with a feed hopper, and the feed hopper is connected with the smelting box through a feed pipe; a cooling box is arranged below the heating box, and supporting legs are fixed at the bottom of the cooling box; the cooling box comprises an outer box and an inner box, the inner box is arranged in the outer box and fixed on the front surface of the outer box together with the inner box, and the front surface of the outer box is hinged with a door plate; a water inlet pipe is arranged on the outer box close to the top, and a water outlet pipe is arranged on the outer box close to the bottom; the smelting box is connected with the inner box through a discharge pipe; the feeding hopper is rotatably provided with mutually meshed crushing rollers, a supporting plate is fixed on the outer side wall of the feeding hopper, a crushing motor is fixed on the supporting plate, a coupler is fixed at the output end of the crushing motor, and the coupler is connected with a rotating shaft on one of the crushing rollers; the rotating shaft is fixed with meshing teeth.

Preferably, a mounting plate is fixed on the back of the smelting box, an air cylinder is fixed on the mounting plate, a cleaning window is formed in the back of the heating box, heat-insulating cotton is arranged on the inner wall of the cleaning window, and a sealing plate is arranged on the cleaning window; and a moving rod is fixed at the output end of the air cylinder and connected with the sealing plate.

Preferably, a material turning plate is rotatably arranged on the sealing plate in the smelting box, synchronous wheels are fixed on the material turning plate, and the synchronous wheels are connected through synchronous belts; and a material turning motor is fixed on the outer side of the sealing plate, and the output end of the material turning motor is connected with a rotating shaft on one material turning plate through an output shaft.

Compared with the prior art, the invention has the beneficial effects that: the shock-absorbing sleeve has good low power rate and ensures the buffering performance of the shock-absorbing sleeve under the action of the internal reinforcing agent (the reinforcing agent is one or a mixture of two of fast extrusion carbon black and semi-reinforcing carbon black) and the anti-aging agent in the shock-absorbing sleeve in the using process; meanwhile, chlorosulfonated polyethylene rubber, modified chlorosulfonated polyethylene rubber and polyglycol stearate are contained in the damping sleeve, so that the damping sleeve has good high-temperature resistance under the action of a cross-linking agent; the shock-absorbing sleeve contains epoxidized natural rubber with the epoxidation degree of 50%, and the shock-absorbing sleeve has high tensile strength, high bonding strength and fatigue resistance and simultaneously shows high damping characteristic.

The internal mixer is provided with the feed hopper, and the crushing roller arranged in the feed hopper can effectively crush and shear the rubber material, so that the internal mixing efficiency of the rubber material can be accelerated, and the rubber material can be prevented from blocking a feed pipe; the rubber material can be turned over constantly by arranging the material turning plate in the smelting box, so that the rubber material in the smelting box can be heated uniformly, and the banburying efficiency of the rubber material is further improved; through being provided with cylinder and closing plate, be convenient for open and smelt the case, wash smelting incasement portion.

Drawings

FIG. 1 is a schematic view of the overall structure of an internal mixer according to the present invention;

FIG. 2 is a schematic view of the internal structure of the heating chamber;

FIG. 3 is a schematic view of the internal structure of the cooling box;

fig. 4 is a side view of the heating box.

In the figure: 1. a heating box; 2. a cooling tank; 3. a feed hopper; 4. a smelting box; 5. an outer box; 6. an inner box; 7. a door panel; 8. a water inlet pipe; 9. a drain pipe; 10. a crushing roller; 11. a crushing motor; 12. a cylinder; 13. heat preservation cotton; 14. a sealing plate; 15. a material turning plate; 16. a synchronizing wheel; 17. a synchronous belt; 18. A stirring motor.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-4, the present invention provides a technical solution: a rubber material for a damping sleeve comprises 80-100 parts of chlorosulfonated polyethylene rubber, 1-6 parts of modified chlorosulfonated polyethylene rubber, 50-55 parts of epoxidized natural rubber, 6-12 parts of an anti-aging agent, 1-2 parts of an antioxidant, 25-35 parts of a filler, 30-60 parts of a reinforcing agent, 5-10 parts of tackifying resin, 2-4 parts of a vulcanizing agent, 1-3 parts of stearic acid, 1-3 parts of an accelerator, 1-2 parts of a crosslinking agent and 2-4 parts of polyglycol stearate.

Further, the epoxidized natural rubber is an epoxidized natural rubber having an epoxidation degree of 50%.

Further, the fillers are N330 carbon black and N550 carbon black.

Further, the anti-aging agent is an anti-aging agent AW, an anti-aging agent RD or an anti-aging agent CPPD.

Further, the vulcanizing agent is insoluble sulfur.

Further, the accelerator is an sulfenamide accelerator.

A processing technology of a rubber material for a damping sleeve comprises the following steps: s1, preheating an internal mixer through water, controlling the temperature of a working chamber of the internal mixer to be less than 50 ℃, controlling the rotating speed to be 30-50 r/min, then putting a mixture of vulcanized polyethylene rubber, modified chlorosulfonated polyethylene rubber, epoxidized natural rubber, sulfur, tackifying resin, reinforcing agent, anti-aging agent, stearic acid and accelerator into the internal mixer for plastication for 7-10min, and then adding filler for banburying for 2-3 min; then adding polyglycol stearate and a cross-linking agent for banburying for 12-15 min; finally adding an accelerant to carry out banburying for 3-5min to obtain a mixed rubber banburying material;

s2, cooling the internal mixing material of the mixed rubber obtained in the step 1 to enable the temperature to be reduced to be lower than 45 ℃, then detecting the hardness, the strength and the elongation of the internal mixing material of the mixed rubber obtained in the step 1, and reserving the qualified internal mixing material of the mixed rubber.

S3, putting the qualified mixed rubber refined material in the step S2 into a material opening machine, adding a vulcanizing agent, keeping the temperature of a working chamber of the material opening machine at 60-70 ℃ after the vulcanizing agent is completely mixed, thinly passing for 5-10 times, and discharging to obtain the material opening machine; then cutting the open mill materials, placing the cut open mill materials in a mould, and rolling for 5-7 times to ensure that bubbles in the open mill materials are discharged.

S4, placing the rolled open mill material in the step S3 in a mold of vulcanization equipment, pressurizing and vulcanizing, keeping the vulcanization temperature at 125-130 ℃, the vulcanization pressure at 25-30Mpa and the vulcanization time at 25-30min to obtain the rubber compound.

S5, placing the mixed rubber in the step S4 in a mould to manufacture the damping sleeve.

S6, trimming the finished product damping sleeve in the S5, measuring static rigidity and dynamic rigidity under 100Hz +/-0.05 mm by using an elastic testing machine, dividing the static rigidity by the dynamic rigidity to obtain dynamic multiplying power, wherein the dynamic multiplying power is less than or equal to 1.3, and thus obtaining a qualified dynamic multiplying power finished product.

Further, the internal mixer in the step 1 comprises a heating box 1, a cooling box 2 and a feeding hopper 3, wherein a smelting box 4 is fixed on the back of the heating box 1, and an electric heating wire is arranged on a bending disc on the inner wall of the heating box 1; the top of the heating box 1 is provided with a feed hopper 3, and the feed hopper 3 is connected with a smelting box 4 through a feed pipe; a cooling box 2 is arranged below the heating box 1, and supporting legs are fixed at the bottom of the cooling box 2; the cooling box 2 comprises an outer box 5 and an inner box 6, the inner box 6 is arranged in the outer box 5 and fixed on the front surface of the outer box 5 together with the inner box 6, and the front surface of the outer box 5 is hinged with a door plate 7; a water inlet pipe 8 is arranged on the outer box 5 close to the top, and a water outlet pipe 9 is arranged on the outer box 5 close to the bottom; the smelting box 4 is connected with the inner box 6 through a discharge pipe; the feeding hopper 3 is rotatably provided with mutually meshed crushing rollers 10, a supporting plate is fixed on the outer side wall of the feeding hopper 3, a crushing motor 11 is fixed on the supporting plate, a coupler is fixed at the output end of the crushing motor 11 and is connected with a rotating shaft on one crushing roller 10; the rotating shaft is fixed with meshing teeth.

Further, a mounting plate is fixed on the back of the smelting box 4, an air cylinder 12 is fixed on the mounting plate, a cleaning window is formed in the back of the heating box 1, heat-preservation cotton 13 is arranged on the inner wall of the cleaning window, and a sealing plate 14 is arranged on the cleaning window; a moving rod is fixed at the output end of the cylinder 12 and is connected with the sealing plate 14.

Furthermore, a material turning plate 15 is rotatably arranged on the sealing plate 14 in the smelting box 4, a synchronous wheel 16 is fixed on the material turning plate 15, and the synchronous wheels 16 are connected through a synchronous belt 17; and a material turning motor 18 is fixed on the outer side of the sealing plate 14, and the output end of the material turning motor 18 is connected with a rotating shaft on one material turning plate 15 through an output shaft.

According to the rubber material for the damping sleeve and the processing technology thereof, the steps are simple, clear and easy to operate, and the reinforcing agent (the reinforcing agent is one or a mixture of two of fast extrusion carbon black and semi-reinforcing carbon black) and the anti-aging agent (the anti-aging agent AW, the anti-aging agent RD or the anti-aging agent CPPD) are added into the raw materials for manufacturing the damping sleeve, so that the damping sleeve has good low power factor, and the buffering performance of the damping sleeve is ensured; chlorosulfonated polyethylene rubber, modified chlorosulfonated polyethylene rubber and polyglycol stearate are added into the raw materials for manufacturing the damping sleeve, the modified chlorosulfonated polyethylene rubber is doped into the chlorosulfonated polyethylene rubber, and a vulcanized cross-linked network structure can be generated between two rubber molecules under the action of a cross-linking agent, so that the stability of a vulcanized cross-linked bond structure of natural rubber under a high-temperature condition is improved, and the high-temperature thermal-oxidative aging resistance, the ozone resistance, the weather resistance and the reversion resistance of the natural rubber of the rubber damper are improved; the epoxidized natural rubber with the epoxidation degree of 50 percent is added into the raw materials for manufacturing the shock-absorbing sleeve, so that the shock-absorbing sleeve has high tensile strength, high bonding strength and fatigue resistance and simultaneously shows high damping characteristic.

The rubber material needs to be banburied, when the rubber material is banburied, the rubber material needs to be poured into the feeding hopper 3, then the crushing motor 11 is started, the crushing motor 11 drives the crushing roller 10 to rotate, and the crushing roller 10 can realize the crushing effect on the rubber material, so that the banburying efficiency of the rubber material can be accelerated, and meanwhile, the rubber material can be prevented from blocking a feeding pipe; after the rubber material enters the smelting box 4, the smelting box 4 can be heated through an electric heating wire, so that the rubber material is molten, and meanwhile, the material turning motor 18 is started to drive the material turning plate 15 to rotate, so that the rubber material in the smelting box 4 can be uniformly heated, and the banburying efficiency of the rubber material is further improved; when the internally mixed rubber material enters the inner box 6 through the discharge pipe, cooling water is injected into the outer box 5 through the water inlet pipe 8, so that the rubber material in a molten state is rapidly cooled and formed; then the door plate 7 is opened to take out the formed rubber material; finally, the cylinder 12 is started, so that the sealing plate 14 can be separated from the cleaning window, and the inner wall of the smelting box 4 can be conveniently cleaned for the next use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.