阅读说明：本技术 无味环保丁腈橡胶及制备方法 (Odorless environment-friendly nitrile rubber and preparation method thereof ) 是由 顾小华 李忠鹏 李昌玉 顾筑波 程亮 王勇 于 2019-10-17 设计创作，主要内容包括：本发明提供了无味环保丁腈橡胶,按质量比计算,包括95-105份丁腈橡胶2856C,17-23份白炭黑,37-44半补强炭黑,27-32份高岭土,14-16份聚异戊二烯,4-6份氧化锌,0.8-1.2份硬脂酸,1-2份防老剂,2-3份除味剂,2-2.7份促进剂、1-1.5份硫磺,改进丁腈橡胶的成分及配比,以及配套的制备方法,制备出无味环保的丁腈橡胶材料,综合性能优异,适用于制备汽车内各配件的生产。(the invention provides tasteless environment-friendly nitrile rubber which comprises, by mass, 95-105 parts of 2856C, 17-23 parts of white carbon black, 37-44 parts of semi-reinforcing carbon black, 27-32 parts of kaolin, 14-16 parts of polyisoprene, 4-6 parts of zinc oxide, 0.8-1.2 parts of stearic acid, 1-2 parts of an anti-aging agent, 2-3 parts of a deodorant, 2-2.7 parts of an accelerator and 1-1.5 parts of sulfur, wherein the components and the proportion of the modified nitrile rubber are modified, and a matched preparation method is adopted to prepare the tasteless environment-friendly nitrile rubber material.)

1. The odorless environment-friendly nitrile rubber is characterized by comprising the following components in percentage by mass

95-105 parts of nitrile rubber 2856C, 17-23 parts of white carbon black, 37-44 parts of semi-reinforcing carbon black, 27-32 parts of kaolin, 14-16 parts of polyisoprene, 4-6 parts of zinc oxide, 0.8-1.2 parts of stearic acid, 1-2 parts of an anti-aging agent, 2-3 parts of a deodorant, 2-2.7 parts of an accelerator and 1-1.5 parts of sulfur.

2. The odorless environment-friendly nitrile rubber as claimed in claim 1, wherein the odorless environment-friendly nitrile rubber comprises 95-105 parts of nitrile rubber 2856C, 17-23 parts of odorless white carbon black, 37-44 parts of semi-reinforcing carbon black N770, 27-32 parts of kaolin P200R, 14-16 parts of liquid polyisoprene, 4-6 parts of zinc oxide, 0.8-1.2 parts of stearic acid, 1-2 parts of anti-aging agent 445, 2-3 parts of deodorant, 2-2.7 parts of accelerator and 1-1.5 parts of sulfur S-80.

3. The odorless environment-friendly nitrile rubber according to claim 2, wherein 100 parts of nitrile rubber 2856C, 20 parts of odorless white carbon black, 40 parts of semi-reinforcing carbon black N770, 30 parts of kaolin P200R, 15 parts of liquid polyisoprene, 5 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of anti-aging agent 445, 2.5 parts of deodorant, 2.4 parts of accelerator and 1.2 parts of sulfur S-80.

4. An odorless environmentally friendly nitrile rubber according to any of claims 1 to 3 wherein the accelerator comprises accelerator CZ, accelerator TETD.

5. The odorless environmentally friendly nitrile rubber according to claim 4 wherein the accelerator comprises 1.2 parts accelerator CZ and 1.2 parts TETD.

6. A preparation method of odorless environment-friendly nitrile rubber is characterized in that,

1) First-stage mixing: adding hydrogenated nitrile rubber into an internal mixer for plastication, then adding zinc oxide, stearic acid, an anti-aging agent, kaolin, partial white carbon black and semi-reinforcing carbon black, then adding the rest white carbon black, semi-reinforcing carbon black and polyisoprene, heating and preserving heat;

2) and (3) second-stage mixing: adding the materials after the first-stage mixing into an open mill, wrapping a roller by the first-stage mixing rubber, adding an accelerator, sulfur and a deodorant, mixing uniformly, and then taking out slices;

3) and (3) vulcanizing the rubber material, namely vulcanizing for the first time: the temperature is 165-185 ℃, and the time is 8-15 min; secondary vulcanization: the temperature is 115 ℃ and 125 ℃, and the time is 2.5-3.5 h.

4) And (4) drying, namely after the materials after the second-stage vulcanization are cooled, placing the materials in water for boiling, and then drying.

7. The method for preparing odorless environment-friendly nitrile rubber according to claim 6, wherein during the first-stage mixing, 1/2 white carbon black and semi-reinforcing carbon black are added, after mixing for 5min, the rest white carbon black, semi-reinforcing carbon black and polyisoprene are added, and after the temperature is raised to 160 ℃, the temperature is kept for 3 min.

8. The method for preparing odorless environment-friendly nitrile rubber according to claim 6, wherein the first stage vulcanization is carried out at 170 ℃ for 10min, and the second stage vulcanization is carried out at 120 ℃ for 3 h.

9. The method for preparing odorless environment-friendly nitrile rubber according to claim 6, wherein the material after the second-stage vulcanization is cooled, then the material is placed in water to be boiled for 30min, and then the material is placed in an oven at 150 ℃ and dried for 3 h.

Technical Field

The invention relates to odorless environment-friendly nitrile rubber and a preparation method thereof.

Background

With the continuous improvement of living standard of people, people require that the appearance of an automobile is beautiful and safer, and meanwhile, the smell inside the automobile is small, so that automobile manufacturers also have requirements for the smell of each part in the automobile, most of materials on the market can not meet the currently required smell grade, or the smell grade can be reached, but the performance of the materials can not meet the requirements for preparing the parts in the automobile, such as automobile door lock parts, or the materials are doped with non-environment-friendly components, and the improvement is needed.

Disclosure of Invention

in view of the above, it is an object of the present invention to provide a odorless and environment-friendly nitrile rubber to solve the above problems.

The technical scheme is as follows:

the odorless environment-friendly nitrile rubber comprises the following components in percentage by mass

95-105 parts of nitrile rubber 2856C, 17-23 parts of white carbon black, 37-44 parts of semi-reinforcing carbon black, 27-32 parts of kaolin, 14-16 parts of polyisoprene, 4-6 parts of zinc oxide, 0.8-1.2 parts of stearic acid, 1-2 parts of an anti-aging agent, 2-3 parts of a deodorant, 2-2.7 parts of an accelerator and 1-1.5 parts of sulfur.

The components and the proportion of the nitrile rubber are improved, the odorless environment-friendly nitrile rubber material is prepared, the comprehensive performance is excellent, and the nitrile rubber material is suitable for production of various accessories in automobiles.

More preferably, 95-105 parts of nitrile rubber 2856C, 17-23 parts of tasteless white carbon black, 37-44 parts of semi-reinforcing carbon black N770, 27-32 parts of kaolin P200R, 14-16 parts of liquid polyisoprene, 4-6 parts of zinc oxide, 0.8-1.2 parts of stearic acid, 1-2 parts of anti-aging agent 445, 2-3 parts of deodorant, 2-2.7 parts of accelerator and 1-1.5 parts of sulfur S-80.

more preferably, 100 parts of nitrile rubber 2856C, 20 parts of odorless white carbon black, 40 parts of semi-reinforcing carbon black N770, 30 parts of kaolin P200R, 15 parts of liquid polyisoprene, 5 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of anti-aging agent 445, 2.5 parts of deodorant, 2.4 parts of accelerator and 1.2 parts of sulfur S-80.

More preferably, the promoter comprises promoter CZ, promoter TETD.

More preferably, the promoter comprises 1.2 parts promoter CZ, 1.2 parts TETD.

More preferably, the odor removing agent is odorless and is selected from inorganic silicate.

The second purpose of the invention is to provide a preparation method of odorless environment-friendly nitrile rubber,

1) First-stage mixing: adding hydrogenated nitrile rubber into an internal mixer for plastication, then adding zinc oxide, stearic acid, an anti-aging agent, kaolin, partial white carbon black and semi-reinforcing carbon black, then adding the rest white carbon black, semi-reinforcing carbon black and polyisoprene, heating and preserving heat;

2) And (3) second-stage mixing: adding the materials after the first-stage mixing into an open mill, wrapping a roller by the first-stage mixing rubber, adding an accelerator, sulfur and a deodorant, mixing uniformly, and then taking out slices;

3) And (3) vulcanizing the rubber material, namely vulcanizing for the first time: the temperature is 165-185 ℃, and the time is 8-15 min; secondary vulcanization: the temperature is 115 ℃ and 125 ℃, and the time is 2.5-3.5 h.

4) And (4) drying, namely after the materials after the second-stage vulcanization are cooled, placing the materials in water for boiling, and then drying.

Preferably, in the first-stage mixing, 1/2 white carbon black and semi-reinforcing carbon black are firstly added, after 5min of mixing, the rest white carbon black, semi-reinforcing carbon black and polyisoprene are added, and the temperature is raised to 160 ℃ and then is kept for 3 min.

More preferably, the first-stage vulcanization is carried out at 170 ℃ for 10min, and the second-stage vulcanization is carried out at 120 ℃ for 3 h.

Preferably, after the material after the second-stage vulcanization is cooled, the material is placed in water to be boiled for 30min, and then the material is placed in an oven at 150 ℃ to be dried for 3 h.

The invention has the beneficial effects that: 2865C nitrile rubber is used as a main material, the components and the proportion of a reinforcing agent, a plasticizer and a filler are adjusted, and an accelerator is matched with sulfur for vulcanization, so that the comprehensive performance of the material is greatly improved and the material passes the test of the popular standard PV3900 odor grade 3.

Detailed Description

the following detailed description of the embodiments of the present invention is provided in connection with the examples to make the technical solutions of the present invention easier to understand and master.

1. Preparation of the Material