CN114196084B

CN114196084B - Nitrile rubber-chlorosulfonated polyethylene rubber and preparation method thereof

Info

Publication number: CN114196084B
Application number: CN202111681010.2A
Authority: CN
Inventors: 裴友伟; 何延钟
Original assignee: Xiamen Fuste Rubber & Plastic Co ltd
Current assignee: Xiamen Fuste Rubber & Plastic Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-10-10
Anticipated expiration: 2041-12-31
Also published as: CN114196084A

Abstract

The application discloses nitrile rubber-chlorosulfonated polyethylene rubber, which comprises the following raw materials in parts by weight: 6-10 parts of chlorosulfonated polyethylene; 35-45 parts of nitrile rubber; 20-30 parts of filler; 0.4-1.5 parts of reinforcing agent; 1-3 parts of carbon black; 5-12 parts of plasticizer; 0.4-1.2 parts of vulcanizing agent; 8-16 parts of processing aid; the preparation method of the rubber comprises the step of banburying the raw materials to obtain the nitrile rubber-chlorosulfonated polyethylene rubber. The application has the effects of good processability and good cracking resistance of rubber.

Description

Nitrile rubber-chlorosulfonated polyethylene rubber and preparation method thereof

Technical Field

The application relates to the field of rubber and plastic, in particular to nitrile rubber-chlorosulfonated polyethylene rubber and a preparation method thereof.

Background

In recent years, with rapid development of automobile industry, requirements of automobile rubber pipes on rubber materials are also increasing, and chlorosulfonated polyethylene rubber (CSM) materials are widely applied to automobile connecting rubber pipes such as automobile ventilating rubber pipes and the like because of good heat resistance, aging resistance, flame resistance and medium resistance.

Chlorosulfonated polyethylene (CSM) is an elastomer material with a high saturated chain structure, which is prepared by taking polyethylene as a raw material and performing chlorination and chlorosulfonation. However, chlorosulfonated polyethylene (CSM) is a saturated rubber with polar side groups, so that the cracking resistance is poor, the dynamic performance is unstable, and the application of the chlorosulfonated polyethylene is limited.

Disclosure of Invention

In order to solve the problem of poor cracking resistance of chlorosulfonated polyethylene rubber (CSM), the application provides nitrile rubber-chlorosulfonated polyethylene rubber and a preparation method thereof.

The application provides nitrile rubber-chlorosulfonated polyethylene rubber, which adopts the following technical scheme:

the nitrile rubber-chlorosulfonated polyethylene rubber comprises the following raw materials in parts by weight:

6-10 parts of chlorosulfonated polyethylene;

35-45 parts of nitrile rubber;

20-30 parts of filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

5-12 parts of plasticizer;

0.4-1.2 parts of vulcanizing agent;

8-16 parts of processing aid.

By adopting the technical scheme, the nitrile rubber improves the structural stability due to the introduction of acrylonitrile, meanwhile, the nitrile rubber has polarity, and the intermolecular force is increased, and when the unsaturated nitrile rubber and the saturated chlorosulfonated polyethylene are blended, the tearing strength, the elongation at break and the permanent deformation of the composite rubber material can be effectively improved.

Meanwhile, the compatibility of the chlorosulfonated polyethylene and the nitrile rubber is enhanced after the reinforcing agent, the filler and the carbon black are mixed into the composite matrix material consisting of the chlorosulfonated polyethylene and the nitrile rubber, so that the crosslinking degree of the obtained composite rubber material product is high. When the composite rubber material is subjected to external force, the load of the force directly acts on the matrix of the composite material, then the force is transmitted to the corresponding reinforcing agent, filler and carbon black, the deformation of the composite rubber material is limited through the reinforcement of the reinforcing agent, filler and carbon black, so that the shearing stress is generated at the part of the joint part, the load of the acting force is distributed on the reinforcing agent, filler, carbon black, rubber material and phase interface, the critical length-diameter ratio is reduced due to the increase of the shearing force of the joint part, and the fracture mode of the composite rubber material belongs to the fracture of the reinforcing agent, filler or carbon black even at the position of the product turning, the strength change of the composite rubber material is small, the anti-fracture performance of the product is improved, and the good strength can be kept even at the product turning.

Preferably, the reinforcing agent is at least one of polyester fiber, acetate fiber or aramid fiber.

By adopting the technical scheme, the polyester fiber, the acetate fiber and the aramid fiber serve as reinforcing agents to play roles in reinforcing and improving compatibility when the rubber material is filled with the reinforcing agents.

After the polyester fiber is added, the viscosity and hardness of the sizing material are increased, and the thermal stability of the polyester fiber is good, so that the composite rubber material can keep good adhesiveness when combined with the sizing material and is subjected to most of load, thereby showing good thermal aging resistance, tear strength and permanent denaturation rate.

The interfacial shear stress and the limiting tensile stress of the composite rubber material and the fiber are increased at the same time after the acetate fiber is added, so that the strength of the composite rubber material is continuously improved, and when the ratio is reached, the strength of the fiber exceeds the strength of the rubber material, and then the strength begins to be reduced.

The viscosity and hardness of the sizing material are correspondingly increased after the aramid fiber is added, so that the tensile strength and the tearing strength of the composite rubber material are improved.

Preferably, the reinforcing agent is a mixture of polyester fibers, acetate fibers and aramid fibers, and the reinforcing agent comprises the following polyester fibers in parts by weight: acetate fibers: aramid fiber = 1: (1-2): (3-6).

By adopting the technical scheme, under the proportioning condition, the reinforcing effect on the sizing material is good after the three fibers are compounded.

Preferably, the reinforcing agent is a composite material of polyester fiber and acetate fiber, and the preparation steps of the reinforcing agent are as follows: the acetate, polyethylene terephthalate and maleic anhydride are melt blended and then crushed into a fibrous composite.

By adopting the technical scheme, the crosslinking degree between the maleic anhydride modified acetate and the polyethylene terephthalate is high, and the structural stability of the reinforcing agent is high.

Preferably, the temperature of the melting process is 200-250 ℃ and the rotating speed is 20-30r/min.

By adopting the technical scheme, under the temperature condition, the vinegar ester and the polyethylene terephthalate are compatible, and then the maleic anhydride is used for grafting, so that the compatibility and the grafting rate of the vinegar ester and the polyethylene terephthalate are improved, and the structure is stable and the advantages of the vinegar ester and the polyethylene terephthalate are achieved.

Preferably, the mass part ratio of the vinegar ester to the polyethylene terephthalate is 6: (1-2).

By adopting the technical scheme, under the condition that the proportion of the vinyl acetate and the polyethylene terephthalate is above, the hydroxyl functional group and the carbonyl functional group enable the vinyl acetate and the polyethylene terephthalate to have good compatibility, and the obtained reinforcing agent has high structural crosslinking degree and good compactness, so that the strength, the tearing strength and the thermal stability of the reinforcing agent are improved.

Preferably, the maleic anhydride is (2-5)% of the total mass of the acetate and the polyethylene terephthalate.

By adopting the technical scheme, after the content of the maleic anhydride is improved, the breaking elongation and the tensile strength of the rubber material are correspondingly improved, and when the content of the maleic anhydride is more than 5%, the mechanical property and the toughness of the rubber material are gradually reduced, so that the interface compatibility of the vinyl acetate and the polyethylene terephthalate can be obviously improved within the adding range, and the effect of toughening the rubber material is achieved.

Preferably, the filler is at least one of magnesium oxide, zinc oxide, titanium dioxide and light calcium carbonate powder.

Preferably, the plasticizer is at least one of plasticizers DINP, MESAMOLL.

The addition of the plasticizers DINP and MESAOLL can lead to lubrication effect between chlorosulfonated polyethylene and nitrile rubber, reduce interaction and play a plasticizing role.

Preferably, the vulcanizing agent is at least one of a vulcanization accelerator DM, a vulcanization accelerator TT, a vulcanization accelerator TETD and a vulcanization accelerator TMTD.

Preferably, the processing aid comprises a flow aid, a dispersing agent and a scorch retarder, and the chlorosulfonated polyethylene rubber comprises the following components in parts by mass:

6-10 parts of chlorosulfonated polyethylene;

35-45 parts of nitrile rubber;

20-30 parts of filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

5-12 parts of plasticizer;

8-15 parts of a flow aid;

0.4-1.2 parts of vulcanizing agent;

0.1-0.3 part of dispersing agent;

0.2-0.6 part of scorch retarder.

Preferably, the flow aid is a flow exhaust PW-80A.

Preferably, the dispersant is a WB212 dispersant.

Preferably, the scorch retarder is CTP scorch retarder.

By adopting the technical scheme, the processing performance of the sizing material can be effectively improved by adding the flow aid and the dispersing agent, and the addition of the scorch retarder can prevent the sizing material from generating the phenomenon of early vulcanization in the processing process, so that the processing performance of the sizing material is improved.

In a second aspect, the present application also provides a method for preparing chlorosulfonated polyethylene rubber, comprising the steps of:

1) Firstly, banburying nitrile rubber at the temperature of 120-130 ℃ for 170-190 seconds, then adding chlorosulfonated polyethylene, carbon black, a processing aid, a filler and a plasticizer for continuous banburying, adding the processing aid when the banburying is carried out to 90-100 ℃, and discharging to obtain master batch when the temperature is 120-130 ℃;

2) Mixing and banburying the vulcanizing agent and the masterbatch at 60-70 ℃, discharging when the temperature reaches 80-90 ℃ to obtain the sizing material, and pulling the sizing material into a pulling piece after 2-4 times of thin pass, wherein the pulling piece is 240-300 seconds to obtain the rubber.

By adopting the technical scheme, the temperature and time of banburying are controlled, so that the compatibility among the components is good, the obtained masterbatch is rapidly vulcanized under the action of the vulcanizing agent and the accelerator, the processability is good, and the vulcanizing efficiency is high.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through mixing chlorosulfonated polyethylene rubber and nitrile rubber, and adding a reinforcing agent, carbon black and a filler for filling and reinforcing, the compatibility of the chlorosulfonated polyethylene rubber and the nitrile rubber is effectively improved, a rubber material with high crosslinking degree is obtained, and the problem of easiness in cracking of the rubber material is effectively solved;

2. the structural stability of the reinforcing agent is improved by modifying the acetate and the polyethylene terephthalate, the compatibility between the reinforcing agent and the sizing material and between the reinforcing agent and the carbon black and the filler is better, and the reinforcing agent has better filling effect;

Detailed Description

The application will be further described in detail with reference to the following examples.

Preparation example of reinforcing agent

Preparation example 1

A reinforcing agent is prepared by the following method: and mixing the polyester fiber, the acetate fiber and the aramid fiber in a weight ratio of 1:1:3, crushing, and sieving with a 80-mesh sieve to obtain the reinforcing agent.

Preparation example 2

A reinforcing agent is prepared by the following method: and mixing the polyester fiber, the acetate fiber and the aramid fiber in a weight ratio of 1:2:6, crushing, and sieving with a 80-mesh sieve to obtain the reinforcing agent.

Preparation example 3

A reinforcing agent is prepared by the following method: and mixing the polyester fiber, the acetate fiber and the aramid fiber in a weight ratio of 1:1:8, crushing, and sieving with a 80-mesh sieve to obtain the reinforcing agent.

Preparation example 4

A reinforcing agent is prepared by the following method: 6kg of cellulose diacetate, 1kg of polyethylene terephthalate and 0.14kg of maleic anhydride are melted and blended in an internal mixer at the temperature of 200 ℃ and the rotating speed of 30r/min, discharged and cooled after 240s, and then crushed and sieved by a 80-mesh sieve to obtain the reinforcing agent.

Preparation example 5

A reinforcing agent is prepared by the following method: 6kg of cellulose diacetate, 2kg of polyethylene terephthalate and 0.4kg of maleic anhydride are melted and blended in an internal mixer at the temperature of 250 ℃ at the rotating speed of 20r/min, discharged and cooled after 180s, and then crushed and sieved by a 80-mesh sieve to obtain the reinforcing agent.

Preparation example 6

A reinforcing agent is prepared by the following method: 6kg of cellulose diacetate, 6kg of polyethylene terephthalate and 0.6kg of maleic anhydride are melted and blended in an internal mixer at the temperature of 245 ℃ at the rotating speed of 22r/min, discharged and cooled after 180s, and then crushed and sieved by a 80-mesh sieve to obtain the reinforcing agent.

Examples of nitrile rubber-chlorosulfonated polyethylene rubber

Example 1

A nitrile rubber-chlorosulfonated polyethylene rubber is prepared by the following method:

1) Firstly, carrying out banburying on 45kg of nitrile rubber at the temperature of 120 ℃ for 190 seconds, then adding 6kg of chlorosulfonated polyethylene, 1kg of carbon black, 13.1kg of magnesium oxide, 13kg of zinc oxide, 1.5kg of polyester fiber (crushed and sieved by a 80-mesh sieve) and 12kg of plasticizer DINP, continuing banburying, adding 8kg of flow aid PW-80A (RC-15) when the banburying is carried out to 90 ℃, and discharging when the temperature is 120 ℃ to obtain master batch;

2) Controlling the temperature at 70 ℃, mixing and banburying 0.4kg of vulcanizing agent TMTD and masterbatch, discharging when the temperature reaches 80 ℃ to obtain a sizing material, and pulling the sizing material into a pulling piece after 2 times of thin pass, wherein the pulling piece is 300 seconds to obtain the rubber.

Example 2

1) Firstly, carrying out banburying on 40kg of nitrile rubber at 130 ℃ for 170 seconds, then adding 8kg of chlorosulfonated polyethylene, 1.6kg of carbon black, 29.2kg of magnesium oxide, 1.5kg of acetate fiber (crushed and sieved by a 80-mesh sieve) and 7.3kg of plasticizer DINP, continuing banburying, adding 11.9kg of flow aid PW-80A (RC-15) and 0.2kg of dispersant WB212 when the banburying is carried out to 100 ℃, and discharging to obtain master batch when the temperature is 130 ℃;

2) Controlling the temperature at 60 ℃, mixing and banburying 0.3kg of the vulcanization accelerator DM, 0.3kg of the vulcanization accelerator TT and the masterbatch, discharging when the temperature reaches 90 ℃ to obtain a sizing material, and pulling the sizing material after 4 times of thin pass, wherein the pulling piece is 240s to obtain the rubber.

Example 3

1) Firstly, banburying 36kg of nitrile rubber at 130 ℃ for 180 seconds, then adding 15kg of chlorosulfonated polyethylene, 3kg of carbon black, 8kg of magnesium oxide, 14kg of titanium pigment, 0.4kg of aramid fiber (crushed and sieved by a 80-mesh sieve) and 6.3kg of plasticizer MESAOLL, continuously banburying, adding 15.2kg of flow aid PW-80A (RC-15), 0.3kg of dispersing agent WB212 and 0.6kg of scorch retarder CTP when the banburying is carried out to 100 ℃, and discharging to obtain master batch when the temperature is 125 ℃;

2) Controlling the temperature at 65 ℃, mixing and banburying 0.6kg of the vulcanization accelerator TT, 0.6kg of the vulcanization accelerator TETD and the master batch, discharging when the temperature reaches 85 ℃ to obtain a sizing material, and pulling the sizing material after 4 times of thin pass, wherein the pulling piece is 240s to obtain the rubber.

Example 4

1) Firstly, carrying out banburying on 40kg of nitrile rubber at 130 ℃ for 180 seconds, then adding 10kg of chlorosulfonated polyethylene, 1.3kg of carbon black, 8kg of zinc oxide, 14kg of titanium dioxide, 8kg of light calcium powder, 0.9kg of reinforcing agent prepared in preparation example 1, 3.1kg of plasticizer DINP and 4.3kg of plasticizer MESAOLL, continuously carrying out banburying, adding 9.6kg of flow aid PW-80A (RC-15), 0.1kg of dispersant WB212 and 0.2kg of scorch retarder CTP when the banburying is carried out to 100 ℃, and discharging to obtain masterbatch when the temperature is 125 ℃; 2) Controlling the temperature at 65 ℃, mixing and banburying 0.2kg of the vulcanization accelerator TT, 0.2kg of the vulcanization accelerator TETD, 0.1kg of the vulcanization accelerator DM and the masterbatch, discharging when the temperature reaches 85 ℃ to obtain a sizing material, and pulling the sizing material after 4 times of thin pass through, and pulling the sizing material for 240s to obtain the rubber.

Example 5

The difference from example 4 is that the reinforcing agent prepared in preparation example 1 is replaced with the reinforcing agent prepared in preparation example 2 in equal amount.

Example 6

The difference from example 4 is that the reinforcing agent prepared in preparation example 1 is replaced with the reinforcing agent prepared in preparation example 3 in equal amount.

Example 7

The difference from example 4 is that the reinforcing agent prepared in preparation example 1 is replaced with the reinforcing agent prepared in preparation example 4 in equal amount.

Example 8

The difference from example 4 is that the reinforcing agent prepared in preparation example 1 is replaced with the reinforcing agent prepared in preparation example 5 in equal amount.

Example 9

The difference from example 4 is that the reinforcing agent prepared in preparation example 1 is replaced with the reinforcing agent prepared in preparation example 6 in equal amount.

Comparative example 1

1) Firstly, banburying 45kg of nitrile rubber at 120 ℃ for 190 seconds, then adding 6kg of chlorosulfonated polyethylene, 28.6kg of magnesium oxide and 12kg of plasticizer DINP for continuous banburying, adding 8kg of flow aid PW-80A (RC-15) when the banburying is carried out to 90 ℃, and discharging to obtain master batch when the temperature is 120 ℃;

Comparative example 2

1) Firstly, banburying 45kg of nitrile rubber at 120 ℃ for 190 seconds, then adding 13.4kg of chlorosulfonated polyethylene, 3kg of carbon black, 11.2kg of magnesium oxide, 0.4kg of acetate fiber (crushed and sieved by a 80-mesh sieve) and 12kg of plasticizer DINP for continuous banburying, adding 13.5kg of flow aid PW-80A (RC-15) when the banburying is carried out to 90 ℃, and discharging to obtain master batch when the temperature is 120 ℃;

2) Controlling the temperature at 70 ℃, mixing and banburying 0.8kg of vulcanizing agent TMTD, 0.2kg of dispersing agent WB212, 0.5kg of scorch retarder CTP and master batch, discharging when the temperature reaches 80 ℃ to obtain a sizing material, and pulling the sizing material after 2 times of thinning and pulling for 300 seconds to obtain the rubber.

Comparative example 3

1) Firstly, banburying 33kg of nitrile rubber at 120 ℃ for 190 seconds, then adding 10kg of chlorosulfonated polyethylene, 5kg of carbon black, 38kg of magnesium oxide, 2.5kg of polyester fiber (crushed and sieved by a 80-mesh sieve) and 6.7kg of plasticizer DINP for continuous banburying, adding 4.2kg of flow aid PW-80A (RC-15) when the banburying is carried out to 90 ℃, and discharging to obtain master batch when the temperature is 120 ℃;

2) Controlling the temperature at 70 ℃, mixing and banburying 0.6kg of vulcanizing agent TMTD and the masterbatch, discharging when the temperature reaches 80 ℃ to obtain a sizing material, and pulling the sizing material into a pulling piece after 2 times of thin pass, wherein the pulling piece is 300 seconds to obtain the rubber.

Performance detection

1. The tensile strength and elongation at break of the rubbers produced in examples 1 to 9 and comparative examples 1 to 3 were tested with reference to GB/T528-2009 "determination of tensile stress Strain Properties of vulcanized rubber or thermoplastic rubber", and the test results are shown in the following Table;

2. the tear strength of the rubbers produced in examples 1 to 9 and comparative examples 1 to 3 was measured by using a square-shaped test piece with reference to GB/T529-2008 "measurement of tear strength of vulcanized rubber or thermoplastic rubber", and the test results are shown in the following table.

Table 1 results of performance test table

Project	Tensile Strength (MPa)	Elongation at break (%)	Tear Strength (kN/m)
				Example 1	23.84	596.34	59.84
Example 2	23.96	599.67	56.26
				Example 3	24.65	608.32	58.21
Example 4	27.80	675.22	74.80
				Example 5	25.65	658.15	71.28
Example 6	21.56	533.48	47.56
				Example 7	32.48	721.34	78.70
Example 8	34.43	726.58	76.50
				Example 9	22.16	547.25	45.93
Comparative example 1	12.41	375.37	31.62
				Comparative example 2	17.37	393.56	37.28
Comparative example 3	16.05	401.85	36.52

As can be seen from Table 1, the tensile strength of the rubber prepared in the examples of the present application is 20MPa or more, the elongation at break is 530% or more, the tear strength is 45kN/m or more, while the tensile strength of the rubber prepared in the comparative examples is 20MPa or less, the elongation at break is 410% or less, and the tear strength is 38kN/m or less, which means that the rubber prepared in the present application has better mechanical properties, and has better tensile strength, elongation at break and tear strength, and can improve the problem of easy cracking at the turning point of the rubber product.

According to the test results of examples 1-6, the reinforcing agent compounded by polyester fiber, acetate fiber and aramid fiber, carbon black and filler are mixed and added into the preparation of rubber, so that the reinforcing and filling effects of the rubber material are good, the rubber material obtains better crosslinking degree, and the tensile strength, the elongation at break and the tearing strength of the rubber are further improved.

According to the test results of examples 4-9, the modified reinforcing agent is adopted to fill the rubber in the preparation process, the dispersing effect of the reinforcing agent, carbon black and filler in the rubber material is better, the reinforcing filling effect on the rubber material is good, the rubber material obtains better crosslinking degree, and the tensile strength, the elongation at break and the tearing strength of the rubber are further improved.

From the test results of examples 4-6, the ratio among the polyester fiber, the acetate fiber and the aramid fiber was 1: (1-2): and (3-6), the filling effect of each fiber on the sizing material is better, the lubricating effect of the sizing material is good at the moment, the processing performance is improved, the stress suffered by the rubber material is uniformly dispersed and acted on the fibers under the proportion, and the cracking resistance of the rubber material is further improved.

According to the test results of examples 4-6, after the modification of the vinyl acetate, the polyethylene terephthalate and the maleic anhydride, the mass part ratio of the vinyl acetate to the polyethylene terephthalate during the modification is 6: and (1-2), when the maleic anhydride is (2-5) percent of the total mass of the acetate and the polyethylene terephthalate, the filling effect of the reinforcing agent on the sizing material is better, and the lubricating effect on the sizing material is good at the moment, so that the processing performance is improved, the stress on the rubber material is uniformly dispersed and acted on the fiber under the proportion, and the cracking resistance of the rubber material is further improved.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The nitrile rubber-chlorosulfonated polyethylene rubber composition is characterized by comprising the following raw materials in parts by weight:

6-15 parts of chlorosulfonated polyethylene;

36-45 parts of nitrile rubber;

22-30 parts of filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

6-12 parts of plasticizer;

0.4-1.2 parts of vulcanizing agent;

8-16 parts of processing aid;

the reinforcing agent is a mixture of polyester fibers, acetate fibers and aramid fibers, and the reinforcing agent comprises the following polyester fibers in parts by mass: acetate fibers: aramid fiber = 1: (1-2): (3-6);

or the reinforcing agent is a composite material of polyester fiber and acetate fiber, and the preparation steps of the composite material are as follows: melt blending acetate fiber, polyethylene terephthalate and maleic anhydride, and then crushing into a fiber composite material;

the maleic anhydride is (2-5)% of the total mass of acetate fiber and polyethylene terephthalate;

the mass part ratio of the acetate fiber to the polyethylene terephthalate is 6: (1-2);

the filler is at least one of magnesium oxide, zinc oxide, titanium dioxide and light calcium carbonate.

2. The nitrile rubber-chlorosulfonated polyethylene rubber composition according to claim 1, characterized in that: the temperature in the melting process is 200-250 ℃, and the rotating speed is 20-30r/min.

3. The nitrile rubber-chlorosulfonated polyethylene rubber composition according to any one of claims 1-2, characterized in that: the processing aid comprises a flow aid, a dispersing agent and a scorch retarder, and the nitrile rubber-chlorosulfonated polyethylene rubber composition comprises the following components in parts by mass:

6-15 parts of chlorosulfonated polyethylene;

36-45 parts of nitrile rubber;

22-30 parts of filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

6-12 parts of plasticizer;

8-15 parts of a flow aid;

0.4-1.2 parts of vulcanizing agent;

0.1-0.3 part of dispersing agent;

0.2-0.6 part of scorch retarder.

4. A process for the preparation of a nitrile rubber-chlorosulfonated polyethylene rubber composition according to any one of claims 1-3, characterized by the steps of:

1) Firstly, banburying nitrile rubber at the temperature of 120-130 ℃ for 170-190 seconds, then adding chlorosulfonated polyethylene, carbon black, a reinforcing agent, a filler and a plasticizer for continuous banburying, adding a processing aid when the banburying is carried out to 90-100 ℃, and discharging to obtain a master batch when the temperature is 120-130 ℃;