阅读说明：本技术 一种汽车机油滤清器密封圈及其生产工艺 (Automobile oil filter sealing ring and production process thereof ) 是由 涂志林 陈方伟 程洪亮 陈琳玉 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种汽车机油滤清器密封圈及其生产工艺,涉及滤清器技术领域,通过将异佛尔酮二异氰酸酯、催化剂加入四口烧瓶中,滴加端羟基聚丁二烯的甲苯溶液,得到中间体A,将抗氧化剂300加入到中间体A中,得到该抗老化剂,通过将白炭黑置于真空烘箱中烘干,再溶于无水乙醇中,用超声波分散,得到产物A,将硅烷偶联剂Si69和催化剂加入到无水乙醇中溶解,然后加入产物A中,得到产物D；解决了现有汽车机油滤清器的密封圈的力学性能差,易老化、使用寿命短的问题；氨基甲酸酯自身的自由基捕捉能力不强,但其与受阻酚相互作用后,使得氨基甲酸酯能够像受阻酚一样具有较好的自由基捕捉能力,实现协同抗氧化作用,从而实现抗老化的目的。(The invention discloses a sealing ring of an automobile oil filter and a production process thereof, and relates to the technical field of filters, isophorone diisocyanate and a catalyst are added into a four-neck flask, a toluene solution of hydroxyl-terminated polybutadiene is dropwise added to obtain an intermediate A, an antioxidant 300 is added into the intermediate A to obtain an anti-aging agent, white carbon black is placed into a vacuum oven to be dried, then dissolved in absolute ethyl alcohol, dispersed by ultrasonic waves to obtain a product A, a silane coupling agent Si69 and the catalyst are added into the absolute ethyl alcohol to be dissolved, and then added into the product A to obtain a product D; the problems of poor mechanical property, easy aging and short service life of a sealing ring of the conventional automobile oil filter are solved; the carbamate has weak free radical trapping capacity, but after the carbamate interacts with hindered phenol, the carbamate has good free radical trapping capacity like hindered phenol, and the synergistic antioxidation effect is realized, so that the anti-aging purpose is realized.)

1. The sealing ring of the automobile oil filter is characterized by comprising the following components in parts by weight:

90-100 parts of modified rubber, 1-2 parts of zinc pyrithione, 1-2 parts of tetrabutylammonium bromide, 1-2 parts of allyl alcohol, 1-2 parts of ditetradecanol ester, 1-2 parts of aluminum hydroxide, 5-6 parts of attapulgite, 2-3 parts of polybrominated styrene, 2-3 parts of antimony trioxide, 1-2 parts of dicumyl peroxide, 10-20 parts of filler and 5-15 parts of anti-aging agent;

the sealing ring of the automobile oil filter is prepared by the following steps:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: and putting the material B into an open mill, and thinly passing to obtain the automobile oil filter sealing ring.

2. The oil filter seal ring of the automobile according to claim 1, wherein the filler is one or two of jade powder and bamboo charcoal powder mixed in any proportion.

3. The automotive oil filter seal ring according to claim 1, wherein the modified rubber is prepared by the following steps:

s21: drying the white carbon black in a vacuum oven at the temperature of 120-130 ℃ for 24-30h, dissolving in absolute ethyl alcohol, and dispersing for 10-30min by using ultrasonic waves to obtain a product A;

s22: adding a silane coupling agent Si69 and a catalyst into absolute ethyl alcohol for dissolving, then adding the obtained product A into the obtained product A, stirring and reacting for 2-3h on a stirring table at the temperature of 60-70 ℃, washing by using the absolute ethyl alcohol, and then placing the obtained product in a vacuum oven for drying for 24-30h to obtain a product D;

s23: mixing natural rubber, zinc oxide, stearic acid, an accelerator and sulfur uniformly, and adding the product D to obtain a blend;

s24: and adding the blend into an open mill for mixing, and vulcanizing the mixture after the mixture is placed at room temperature for 24-30h to obtain the modified rubber.

4. The automotive oil filter seal ring according to claim 3, wherein the amount ratio of the white carbon black to the absolute ethyl alcohol in step S21 is 10 g: 50 mL.

5. The automotive oil filter seal ring according to claim 3, wherein the catalyst in the step S22 is dibutyltin dilaurate, and the dosage ratio of the silane coupling agent Si69, the catalyst, the absolute ethyl alcohol and the product A is 3 g: 0.02 g: 10mL of: 55 g.

6. The automotive oil filter seal ring according to claim 3, wherein the accelerator in step S23 is N-cyclohexyl-2-benzothiazole sulfenamide, and the ratio of the natural rubber, the zinc oxide, the stearic acid, the accelerator, the sulfur and the product D is 100 g: 2 g: 5 g: 1 g: 2 g: 55 g.

7. The automotive oil filter seal ring according to claim 1, wherein the anti-aging agent is prepared by the following steps:

s71: adding isophorone diisocyanate and a catalyst into a four-neck flask, adding the isophorone diisocyanate and the catalyst into a solvent toluene, controlling the temperature at 30-45 ℃, introducing nitrogen for protection, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene, controlling the dropwise adding speed at 1-2 drops/s, and reacting for 3-4h to obtain an intermediate A;

s72: adding the antioxidant 300 into the intermediate A, adding a catalyst, controlling the temperature at 70-80 ℃, reacting for 3-4h, and drying in a vacuum drying oven at 60-70 ℃ for 8-9h to obtain the anti-aging agent.

8. The oil filter seal ring of the automobile according to claim 7, wherein the amount of the hydroxyl-terminated polybutadiene and toluene in the toluene solution of hydroxyl-terminated polybutadiene in step S71 is 5 g: 10g, the catalyst is dibutyltin dilaurate, the mass of the catalyst is 4% of that of isophorone diisocyanate, and the dosage ratio of the isophorone diisocyanate to a toluene solution of hydroxyl-terminated polybutadiene is 3.82 g: 15 g.

9. The automotive oil filter seal ring according to claim 7, wherein in the step S72, the catalyst is dibutyltin dilaurate, the mass of the catalyst is 3% of the mass of the intermediate A, and the molar ratio of the antioxidant 300 to the intermediate A is 2: 1.

10. the production process of the car oil filter sealing ring according to claim 1, wherein the production process of the car oil filter sealing ring specifically comprises the following steps:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: and putting the material B into an open mill, and thinly passing to obtain the automobile oil filter sealing ring.

Technical Field

The invention relates to the technical field of filters, in particular to a sealing ring of an automobile oil filter and a production process thereof.

Background

In the working process of an engine, metal abrasive dust, carbon deposit oxidized at high temperature, colloidal precipitate, water and the like are continuously mixed into lubricating oil, the oil filter has the functions of filtering out mechanical impurities and colloids, keeping the lubricating oil clean and prolonging the service life of the lubricating oil, and a sealing ring of the oil filter is a rubber ring with a circular section and prevents the lubricating oil from leaking and foreign matters from invading;

however, in the existing sealing ring of the automobile oil filter, because the engine generates a large amount of heat during working, the air filter of the engine is in a high-temperature state, and the sealing ring is aged due to lasting high temperature, the sealing effect is reduced, the leakage of lubricating oil is easy to generate, the lubrication of internal parts is not in place, abrasion is generated, the normal operation of the engine is influenced, unnecessary loss is caused, and the sealing ring has poor mechanical property and short service life;

therefore, how to improve the problems of poor mechanical property, short service life and easy aging of the sealing ring of the existing automobile oil filter is the problem to be solved by the invention.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a sealing ring of an automobile oil filter and a production process thereof, wherein the sealing ring comprises the following steps:

(1) the preparation method comprises the steps of putting white carbon black into a vacuum oven for drying, dissolving into absolute ethyl alcohol, dispersing by ultrasonic waves to obtain a product A, adding a silane coupling agent Si69 and a catalyst into the absolute ethyl alcohol for dissolving, then adding into the product A to obtain a product D, uniformly mixing natural rubber, zinc oxide, stearic acid, an accelerant and sulfur, adding into the product D to obtain a blend, adding the blend into an open mill for mixing and vulcanizing to obtain the modified rubber, and the problems of poor mechanical property and short service life of a sealing ring of the conventional automobile oil filter are solved by using the modified rubber;

(2) the method comprises the steps of adding isophorone diisocyanate and a catalyst into a four-neck flask, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene to obtain an intermediate A, adding an antioxidant 300 into the intermediate A to obtain the anti-aging agent, and adding the anti-aging agent to solve the problem that a sealing ring is aged due to the fact that an engine air filter is in a high-temperature state due to a large amount of heat generated when the engine works.

The purpose of the invention can be realized by the following technical scheme:

the sealing ring of the automobile oil filter comprises the following components in parts by weight:

90-100 parts of modified rubber, 1-2 parts of zinc pyrithione, 1-2 parts of tetrabutylammonium bromide, 1-2 parts of allyl alcohol, 1-2 parts of ditetradecanol ester, 1-2 parts of aluminum hydroxide, 5-6 parts of attapulgite, 2-3 parts of polybrominated styrene, 2-3 parts of antimony trioxide, 1-2 parts of dicumyl peroxide, 10-20 parts of filler and 5-15 parts of anti-aging agent;

the sealing ring of the automobile oil filter is prepared by the following steps:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: and putting the material B into an open mill, and thinly passing to obtain the automobile oil filter sealing ring.

As a further scheme of the invention: the filler is one or two of jade powder and bamboo charcoal powder which are mixed according to any proportion.

As a further scheme of the invention: the modified rubber is prepared by the following steps:

s21: drying the white carbon black in a vacuum oven at the temperature of 120-130 ℃ for 24-30h, dissolving in absolute ethyl alcohol, and dispersing for 10-30min by using ultrasonic waves to obtain a product A;

s22: adding a silane coupling agent Si69 and a catalyst into absolute ethyl alcohol for dissolving, then adding the obtained product A into a stirring table, stirring and reacting for 2-3h at the temperature of 60-70 ℃, washing by using the absolute ethyl alcohol after the reaction is finished, and then drying in a vacuum oven for 24-30h to obtain a product D;

s23: mixing natural rubber, zinc oxide, stearic acid, an accelerator and sulfur uniformly, and adding the product D to obtain a blend;

s24: and adding the blend into an open mill for mixing, and vulcanizing the mixture after the mixture is placed at room temperature for 24-30h to obtain the modified rubber.

As a further scheme of the invention: in the step S21, the dosage ratio of the white carbon black to the absolute ethyl alcohol is 10 g: 50 mL.

As a further scheme of the invention: in the step S22, the catalyst is dibutyltin dilaurate, and the using amount ratio of the silane coupling agent Si69, the catalyst, the absolute ethyl alcohol and the product A is 3 g: 0.02 g: 10mL of: 55 g.

As a further scheme of the invention: in the step S23, the accelerant is N-cyclohexyl-2-benzothiazole sulfonamide, and the dosage ratio of the natural rubber, the zinc oxide, the stearic acid, the accelerant, the sulfur and the product D is 100 g: 2 g: 5 g: 1 g: 2 g: 55 g.

As a further scheme of the invention: the anti-aging agent is prepared by the following steps:

s71: adding isophorone diisocyanate and a catalyst into a four-neck flask, adding the isophorone diisocyanate and the catalyst into a solvent toluene, controlling the temperature at 30-45 ℃, introducing nitrogen for protection, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene, controlling the dropwise adding speed at 1-2 drops/s, and reacting for 3-4h to obtain an intermediate A;

the reaction principle is as follows:

s72: adding an antioxidant 300 into the intermediate A, adding a catalyst, controlling the temperature at 70-80 ℃, reacting for 3-4h, removing toluene through rotary evaporation, adding excessive methanol, oscillating, carrying out liquid separation after precipitation delamination to obtain a crude product, carrying out toluene dissolution-methanol precipitation-liquid separation treatment on the crude product, and drying for 8-9h in a vacuum drying oven at 60-70 ℃ to obtain the anti-aging agent.

The reaction principle is as follows:

as a further scheme of the invention: the dosage of the hydroxyl-terminated polybutadiene and the toluene in the toluene solution of the hydroxyl-terminated polybutadiene in the step S71 is 5 g: 10g, the catalyst is dibutyltin dilaurate, the mass of the catalyst is 4% of that of isophorone diisocyanate, and the dosage ratio of the isophorone diisocyanate to a toluene solution of hydroxyl-terminated polybutadiene is 3.82 g: 15 g.

As a further scheme of the invention: in step S72, the catalyst is dibutyltin dilaurate, the mass of the catalyst is 3% of the mass of the intermediate a, and the molar ratio of the antioxidant 300 to the intermediate a is 2: 1.

the production process of the sealing ring of the automobile oil filter comprises the following preparation processes:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: and putting the material B into an open mill, and thinly passing to obtain the automobile oil filter sealing ring.

The invention has the beneficial effects that:

the invention is that the white carbon black is put in a vacuum oven to be dried and then dissolved in absolute ethyl alcohol, the product A is obtained by ultrasonic dispersion, the silane coupling agent Si69 and the catalyst are added into the absolute ethyl alcohol to be dissolved, then the product A is added to obtain the product D, the natural rubber, the zinc oxide, the stearic acid, the accelerant and the sulfur are evenly mixed, the product D is added to obtain the blend, the blend is added into an open mill to be mixed and vulcanized to obtain the modified rubber, the silane coupling agent Si69 is grafted on the white carbon black, the growth of nano holes is controlled in the rubber matrix, the nano holes come from the interface holes of the nano particles and the rubber matrix to generate particle interface separation along the stretching direction, thereby forming holes, when the silicon particles are grafted and modified to be refilled into the rubber matrix, the nano holes like fiber bundles are obtained, the nano holes formed in the rubber matrix are beneficial to preventing the generation of cracks, the rubber material is prevented from being damaged, the nano particle interface strengthening can change the hole formation mode, and the particle interface is separated from the hole formation mode and is changed into the hole formation mode in the rubber matrix, so that the rubber material is reinforced, the modified rubber with excellent mechanical property is obtained, and the purposes of improving the mechanical property of the sealing ring of the automobile oil filter and prolonging the service life are achieved;

adding isophorone diisocyanate and a catalyst into a four-neck flask, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene to obtain an intermediate A, adding an antioxidant 300 into the intermediate A to obtain the anti-aging agent, adding the anti-aging agent to improve the anti-aging property, wherein a rubber material can generate a large amount of alkyl radicals R & under the action of heat and oxygen, R & can rapidly react with oxygen in the air to generate high-activity peroxidated alkyl radicals ROO & the free radicals of carbamate have the capture capacity and can preferentially react with ROO & to terminate the free radicals, hydrogen in the molecular chain of the rubber material is prevented from being deprived by ROO & the free radicals, stabilization is realized, hindered phenol is introduced to lose the free radicals to generate phenoxy radicals, and the carbamate can provide hydrogen atoms for the phenoxy radicals to regenerate the hindered phenol, the carbamate has a good free radical trapping ability like hindered phenol by interacting with the hindered phenol although the carbamate has a weak free radical trapping ability, and realizes a synergistic antioxidation effect, thereby achieving the purpose of aging resistance.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 1:

the embodiment is a car oil filter sealing ring, which comprises the following components in parts by weight:

90 parts of modified rubber, 1 part of zinc pyrithione, 1 part of tetrabutylammonium bromide, 1 part of allyl alcohol, 1 part of ditetradecanol ester, 1 part of aluminum hydroxide, 5 parts of attapulgite, 2 parts of polybrominated styrene, 2 parts of antimony trioxide, 1 part of dicumyl peroxide, 10 parts of filler and 5 parts of anti-aging agent;

the sealing ring of the automobile oil filter is prepared by the following steps:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: putting the material B into an open mill, and thinly passing to obtain the sealing ring of the automobile oil filter;

the modified rubber is prepared by the following steps:

s21: putting the white carbon black in a vacuum oven at 120 ℃ for drying for 24h, dissolving in absolute ethyl alcohol, and dispersing for 10min by using ultrasonic waves to obtain a product A;

s22: adding a silane coupling agent Si69 and a catalyst into absolute ethyl alcohol for dissolving, then adding the obtained product A into the obtained product A, stirring and reacting for 2 hours on a stirring table at the temperature of 60 ℃, washing by using the absolute ethyl alcohol, and then placing the obtained product in a vacuum oven for drying for 24 hours to obtain a product D;

s23: mixing natural rubber, zinc oxide, stearic acid, an accelerator and sulfur uniformly, and adding the product D to obtain a blend;

s24: adding the blend into an open mill for mixing, and vulcanizing after the mixture is placed at room temperature for 24 hours to obtain modified rubber;

the anti-aging agent is prepared by the following steps:

s71: adding isophorone diisocyanate and a catalyst into a four-neck flask, adding the mixture into a solvent toluene, controlling the temperature at 30 ℃, introducing nitrogen for protection, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene, controlling the dropwise adding rate to be 1 drop/s, and reacting for 3 hours to obtain an intermediate A;

s72: adding an antioxidant 300 into the intermediate A, adding a catalyst, controlling the temperature at 70 ℃, reacting for 3h, and drying in a vacuum drying oven at 60 ℃ for 8h to obtain the anti-aging agent.

Example 2:

the embodiment is a car oil filter sealing ring, which comprises the following components in parts by weight:

100 parts of modified rubber, 2 parts of zinc pyrithione, 2 parts of tetrabutylammonium bromide, 2 parts of allyl alcohol, 1 part of ditetradecanol ester, 1 part of aluminum hydroxide, 5 parts of attapulgite, 2 parts of polybrominated styrene, 2 parts of antimony trioxide, 1 part of dicumyl peroxide, 10 parts of filler and 5 parts of anti-aging agent;

the sealing ring of the automobile oil filter is prepared by the following steps:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: putting the material B into an open mill, and thinly passing to obtain the sealing ring of the automobile oil filter;

the modified rubber is prepared by the following steps:

s21: putting the white carbon black in a vacuum oven at 120 ℃ for drying for 24h, dissolving in absolute ethyl alcohol, and dispersing for 10min by using ultrasonic waves to obtain a product A;

s22: adding a silane coupling agent Si69 and a catalyst into absolute ethyl alcohol for dissolving, then adding the obtained product A into the obtained product A, stirring and reacting for 2 hours on a stirring table at the temperature of 60 ℃, washing by using the absolute ethyl alcohol, and then placing the obtained product in a vacuum oven for drying for 24 hours to obtain a product D;

s23: mixing natural rubber, zinc oxide, stearic acid, an accelerator and sulfur uniformly, and adding the product D to obtain a blend;

s24: adding the blend into an open mill for mixing, and vulcanizing after the mixture is placed at room temperature for 24 hours to obtain modified rubber;

the anti-aging agent is prepared by the following steps:

s71: adding isophorone diisocyanate and a catalyst into a four-neck flask, adding the mixture into a solvent toluene, controlling the temperature at 45 ℃, introducing nitrogen for protection, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene, controlling the dropwise adding rate to be 2 drops/s, and reacting for 4 hours to obtain an intermediate A;

s72: adding an antioxidant 300 into the intermediate A, adding a catalyst, controlling the temperature at 80 ℃, reacting for 4h, and drying in a vacuum drying oven at 70 ℃ for 9h to obtain the anti-aging agent.

Example 3:

the embodiment is a car oil filter sealing ring, which comprises the following components in parts by weight:

100 parts of modified rubber, 1 part of zinc pyrithione, 1 part of tetrabutylammonium bromide, 1 part of allyl alcohol, 1 part of ditetradecanol ester, 2 parts of aluminum hydroxide, 6 parts of attapulgite, 3 parts of polybrominated styrene, 3 parts of antimony trioxide, 2 parts of dicumyl peroxide, 20 parts of filler and 15 parts of anti-aging agent;

the sealing ring of the automobile oil filter is prepared by the following steps:

s1: putting the modified rubber into an internal mixer for internal mixing, adding zinc pyrithione, tetrabutyl ammonium bromide, allyl alcohol, ditetradecyl alcohol ester and aluminum hydroxide, and kneading to obtain a material A;

s2: adding attapulgite, polybrominated styrene, antimony trioxide, an anti-aging agent, dicumyl peroxide and a filler into the material A, mixing, discharging rubber and cooling to obtain a material B;

s3: putting the material B into an open mill, and thinly passing to obtain the sealing ring of the automobile oil filter;

the modified rubber is prepared by the following steps:

s21: putting the white carbon black into a vacuum oven at 130 ℃ for drying for 24-30h, dissolving the white carbon black into absolute ethyl alcohol, and dispersing the white carbon black for 10-30min by using ultrasonic waves to obtain a product A;

s22: adding a silane coupling agent Si69 and a catalyst into absolute ethyl alcohol for dissolving, then adding the obtained product A into the obtained product A, stirring and reacting for 2-3h on a stirring table at the temperature of 60-70 ℃, washing by using the absolute ethyl alcohol, and then placing the obtained product in a vacuum oven for drying for 24-30h to obtain a product D;

s23: mixing natural rubber, zinc oxide, stearic acid, an accelerator and sulfur uniformly, and adding the product D to obtain a blend;

s24: adding the blend into an open mill for mixing, and vulcanizing the mixture after the mixture is placed at room temperature for 24-30h to obtain modified rubber;

the anti-aging agent is prepared by the following steps:

s71: adding isophorone diisocyanate and a catalyst into a four-neck flask, adding the isophorone diisocyanate and the catalyst into a solvent toluene, controlling the temperature at 30-45 ℃, introducing nitrogen for protection, dropwise adding a toluene solution of hydroxyl-terminated polybutadiene, controlling the dropwise adding speed at 1-2 drops/s, and reacting for 3-4h to obtain an intermediate A;

s72: adding the antioxidant 300 into the intermediate A, adding a catalyst, controlling the temperature at 70-80 ℃, reacting for 3-4h, and drying in a vacuum drying oven at 60-70 ℃ for 8-9h to obtain the anti-aging agent.

Comparative example 1:

compared with the example 3, the comparative example does not add an anti-aging agent, and the rest steps are the same;

comparative example 2:

the comparative example uses the automobile filter sealing ring disclosed in the Chinese patent CN 201310686994.2;

the filter sealing rings of the embodiments 1 to 3 and the comparative examples 1 to 2 are subjected to an accelerated thermal oxidation aging test by adopting a universal testing machine according to the standard GB/T528-2009, setting the tensile rate to be 500mm/min, testing the elongation at break of the material, and carrying out the accelerated thermal oxidation aging test according to the standard GB/T3512-2001, wherein the aging temperature is 100 ℃;

the results are shown in the following table:

as can be seen from the above table, under the same test conditions, the elongation at break of the experimental example reaches 672-680%, the elongation at break of the comparative example 1 without adding the anti-aging agent is 455%, the elongation at break of the comparative example 2 using the automobile filter seal ring disclosed in Chinese patent CN201310686994.2 is 598%, the elongation at break retention of the experimental example with aging time of 30h reaches 80-82%, the elongation at break retention of the comparative example 1 without adding the anti-aging agent with aging time of 30h is 70%, the elongation at break retention of the comparative example 2 using the automobile filter seal ring disclosed in Chinese patent CN201310686994.2 with aging time of 30h is 78%, the elongation at break of the experimental example with aging time of 60h reaches 70-75%, and the elongation at break retention of the comparative example 1 without adding the anti-aging agent with aging time of 60h is 59%, the retention rate of elongation at break of comparative example 2 using the automobile filter seal ring disclosed in chinese patent CN201310686994.2 with an aging time of 60h is 65%, the retention rate of elongation at break of the experimental example with an aging time of 90h is 68-72%, the retention rate of elongation at break of comparative example 1 without adding an anti-aging agent with an aging time of 90h is 54%, the retention rate of elongation at break of comparative example 2 using the automobile filter seal ring disclosed in chinese patent CN201310686994.2 with an aging time of 90h is 60%, the retention rate of elongation at break of the experimental example with an aging time of 180h is 59-62%, the retention rate of elongation at break of comparative example 1 without adding an anti-aging agent with an aging time of 180h is 48%, the retention rate of elongation at break of comparative example 2 using the automobile filter seal ring disclosed in chinese patent CN201310686994.2 with an aging time of 180h is 55%, the data of the experimental examples are obviously superior to those of the comparative examples, which shows that the ageing resistance and the mechanical property of the material are obviously improved by adding the anti-ageing agent and using the modified rubber.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.