阅读说明：本技术 一种利用石油焦制备橡胶抗老化剂的方法 (Method for preparing rubber anti-aging agent by using petroleum coke ) 是由 陆建 于 2019-11-28 设计创作，主要内容包括：本发明公开了一种利用石油焦制备橡胶抗老化剂的方法,涉及化工技术领域,包括以下步骤：将石油焦粉碎至粒径为0-30um,备用；将环己烷、醋酸丁酯和环己醇机械均匀混合,升温后,再加入硬脂酸盐和硬脂酸溶解完全；向混合溶液中添加氧化锌、石油焦粉末、碳黑和氧化钛,机械搅拌均匀；将混合溶液采用超声处理,得到分散均匀的体系。本发明中通过将石油焦添加进橡胶抗老化剂中,既能够利用石油焦中天然存在的碳片作为吸收紫外线的成分,有效防止橡胶变老,又能够降低石油焦的处理费用一举两得；超声处理提高固体粉末表面活性,使固体粉末与有机溶剂实际接触面更大,从而破坏固体粉末之间的团聚效应,提高固体粉末在溶剂中的分散均匀度。(The invention discloses a method for preparing a rubber anti-aging agent by using petroleum coke, which relates to the technical field of chemical industry and comprises the following steps: pulverizing petroleum coke to particle size of 0-30 um; uniformly mixing cyclohexane, butyl acetate and cyclohexanol mechanically, heating, and adding stearate and stearic acid for complete dissolution; adding zinc oxide, petroleum coke powder, carbon black and titanium oxide into the mixed solution, and mechanically stirring uniformly; and (4) carrying out ultrasonic treatment on the mixed solution to obtain a uniformly dispersed system. According to the invention, the petroleum coke is added into the rubber anti-aging agent, so that the naturally-occurring carbon sheets in the petroleum coke can be used as components for absorbing ultraviolet rays, the rubber is effectively prevented from aging, and the treatment cost of the petroleum coke can be reduced; the ultrasonic treatment improves the surface activity of the solid powder, and the actual contact surface of the solid powder and the organic solvent is larger, so that the agglomeration effect among the solid powder is damaged, and the dispersion uniformity of the solid powder in the solvent is improved.)

1. A method for preparing a rubber age resister by using petroleum coke is characterized by comprising the following steps:

step one, petroleum coke is crushed to the particle size of 0-30um for standby;

step two, uniformly mixing cyclohexane, butyl acetate and cyclohexanol mechanically, heating, and then adding stearate and stearic acid to dissolve completely;

step three, adding a reinforcing auxiliary agent, an antioxidant, petroleum coke powder, carbon black and titanium oxide into the mixed solution obtained in the step two, and mechanically stirring uniformly;

and step four, carrying out ultrasonic treatment on the mixed solution obtained in the step three to obtain a uniformly dispersed system.

2. The method for preparing the rubber aging resistor by using the petroleum coke as claimed in claim 1, wherein the rubber aging resistor consists of the following components in parts by mass: 3-7 parts of petroleum coke, 1-5 parts of carbon black, 1-5 parts of titanium oxide, 1-5 parts of cyclohexane, 1-5 parts of butyl acetate, 1-5 parts of cyclohexanol, 1-5 parts of stearate, 1-5 parts of stearic acid, 8-14 parts of reinforcing auxiliary agent and 5-13 parts of antioxidant.

3. The method for preparing rubber age resister using petroleum coke as claimed in claim 1, wherein the stearate is one of calcium stearate, aluminum stearate, zinc stearate or magnesium stearate.

4. The method for preparing the rubber age resister using petroleum coke as claimed in claim 2, wherein the reinforcing adjuvant consists of the following components in parts by mass: 1-4 parts of silicon dioxide, 1-4 parts of mica powder, 1-4 parts of limestone, 0.5-1 part of zinc oxide, 0.5-1 part of calcium oxide and 2-4 parts of calcium citrate.

5. The method for preparing the rubber age resister by using petroleum coke as claimed in claim 2, wherein the antioxidant is composed of the following components in parts by mass: 3-7 parts of phenol, 1-3 parts of benzoic acid and 1-3 parts of sodium dodecyl sulfate.

6. The method for preparing the rubber aging resistor by using the petroleum coke as claimed in claim 2, wherein the rubber aging resistor consists of the following components in parts by mass: 4-6 parts of petroleum coke, 2-4 parts of carbon black, 2-4 parts of titanium oxide, 2-4 parts of cyclohexane, 2-4 parts of butyl acetate, 2-4 parts of cyclohexanol, 2-4 parts of stearate, 2-4 parts of stearic acid, 6-9 parts of reinforcing auxiliary agent and 3-4 parts of antioxidant.

7. The method for preparing the rubber age resister by using the petroleum coke as claimed in claim 2, wherein the petroleum coke is dried in the oven at 60-80 ℃ after being crushed in the first step, the alcohol is used as the grinding medium, the adding amount of the alcohol is 500g/kg, the heating is carried out to 45-60 ℃ in the second step, and the mechanical stirring speed in the third step is 180 r/min.

8. The method for preparing the rubber age resister by using the petroleum coke as claimed in claim 1, wherein the ultrasonic treatment in the third step comprises two stages, the ultrasonic power of the first stage is 15-18kHz, the ultrasonic time is 25-30min, the ultrasonic power of the second stage is 25-30kHz, and the ultrasonic time is 100-120 min.

9. The method for preparing rubber aging resistor using petroleum coke as claimed in claim 1, wherein the carbon black is in powder form and has a particle size of 1-15um, and the titanium oxide is in powder form and has a particle size of 1-15 um.

Technical Field

The invention relates to the technical field of chemical industry, in particular to a method for preparing a rubber anti-aging agent by using petroleum coke.

Background

Rubber oxidation refers to the process of chemical reaction between groups in the molecule and the active substance during the use of the rubber. The active material includes an oxidizing agent, a radical, and the like. Wherein the oxidant is an oxidant which is contacted with the outside in the use process of the rubber, such as oxygen, peroxide, oxidizing acid and the like. The oxidizing agent can oxidize groups with reducibility in the long polymer chain, so that the polymer chain is broken, and rubber aging is caused. The free radical refers to the breaking of carbon-carbon bonds or carbon-hydrogen bonds, and a common electron pair is directly divided by atoms at two ends of a chemical bond to form two atoms respectively carrying a free electron, and the electrons carrying the free atoms can be used as an active substance to break the rest of the carbon-carbon bonds or the carbon-hydrogen bonds. Ultraviolet light is a very important cause of rubber aging. Ultraviolet rays have large energy, after the energy is absorbed by a carbon-carbon bond or a carbon-hydrogen bond, the carbon-carbon bond or the carbon-hydrogen bond is broken to generate a carbon free radical and a hydrogen free radical, and the carbon free radical can be further combined with the carbon atoms in the carbon-carbon bond and the carbon-hydrogen bond.

The petroleum coke is black solid coke left after petroleum cracking, the petroleum coke contains a large amount of mineral substances and carbon, the carbon is in a sheet structure, is similar to graphene and can absorb ultraviolet rays, and the mineral substances contained in the petroleum coke are natural substances which can add mechanical properties of rubber, so that the petroleum coke is added into the rubber anti-aging agent, the waste reutilization can be realized, the petroleum coke treatment cost is reduced, the anti-aging property of the rubber can be improved, and the two purposes are achieved. However, no relevant method is reported at present.

Disclosure of Invention

The invention aims to provide a method for preparing a rubber age resister by using petroleum coke so as to realize the preparation of the rubber age resister from the petroleum coke.

A method for preparing a rubber age resistor using petroleum coke, the method comprising the steps of:

step one, petroleum coke is crushed to the particle size of 0-30um for standby;

step two, uniformly mixing cyclohexane, butyl acetate and cyclohexanol mechanically, heating, and then adding stearate and stearic acid to dissolve completely;

step three, adding a reinforcing auxiliary agent, an antioxidant, petroleum coke powder, carbon black and titanium oxide into the mixed solution obtained in the step two, and mechanically stirring uniformly;

and step four, carrying out ultrasonic treatment on the mixed solution obtained in the step three to obtain a uniformly dispersed system.

As a preferable scheme, the rubber anti-aging agent consists of the following components in parts by mass: 3-7 parts of petroleum coke, 1-5 parts of carbon black, 1-5 parts of titanium oxide, 1-5 parts of cyclohexane, 1-5 parts of butyl acetate, 1-5 parts of cyclohexanol, 1-5 parts of stearate, 1-5 parts of stearic acid, 8-14 parts of reinforcing auxiliary agent and 5-13 parts of antioxidant.

Preferably, the stearate is one of calcium stearate, aluminum stearate, zinc stearate and magnesium stearate.

As a preferable scheme, the reinforcing auxiliary agent consists of the following components in parts by mass: 1-4 parts of silicon dioxide, 1-4 parts of mica powder, 1-4 parts of limestone, 0.5-1 part of zinc oxide, 0.5-1 part of calcium oxide and 2-4 parts of calcium citrate.

As a preferable scheme, the antioxidant consists of the following components in parts by mass: 3-7 parts of phenol, 1-3 parts of benzoic acid and 1-3 parts of sodium dodecyl sulfate.

As a preferable scheme, the rubber anti-aging agent consists of the following components in parts by mass: 4-76 parts of petroleum coke, 2-4 parts of carbon black, 2-4 parts of titanium oxide, 2-4 parts of cyclohexane, 2-4 parts of butyl acetate, 2-4 parts of cyclohexanol, 2-4 parts of stearate, 2-4 parts of stearic acid, 6-9 parts of reinforcing auxiliary agent and 3-4 parts of antioxidant.

As a preferable scheme, after the petroleum coke is crushed in the first step, the petroleum coke is dried in an oven at the temperature of 60-80 ℃, alcohol is used as a grinding medium, the adding amount of the alcohol is 400-500g/kg, the petroleum coke is heated to the temperature of 45-60 ℃ in the second step, and the mechanical stirring speed in the third step is 150-180 r/min.

As a preferable scheme, the ultrasonic treatment in the third step comprises two stages, wherein the ultrasonic power of the first stage is 15-18kHz, the ultrasonic time is 25-30min, the ultrasonic power of the second stage is 25-30kHz, and the ultrasonic time is 100-120 min.

Preferably, the carbon black is in the form of powder and has a particle diameter of 1 to 15um, and the titanium oxide is in the form of powder and has a particle diameter of 1 to 15 um.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the petroleum coke is added into the rubber anti-aging agent, so that the naturally-occurring carbon sheets in the petroleum coke can be used as components for absorbing ultraviolet rays, the rubber is effectively prevented from aging, and the treatment cost of the petroleum coke can be reduced. The ultrasonic treatment improves the surface activity of the solid powder, and the actual contact surface of the solid powder and the organic solvent is larger, so that the agglomeration effect among the petroleum coke powder is damaged, the dispersion uniformity of the petroleum coke powder in the solvent is improved, and the effective amount of the petroleum coke powder which really participates in the oxidation resistance is increased.

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 should be apparent 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.