CN114196084A

CN114196084A - Nitrile rubber-chlorosulfonated polyethylene rubber and preparation method thereof

Info

Publication number: CN114196084A
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: 2022-03-18
Anticipated expiration: 2041-12-31
Also published as: CN114196084B

Abstract

The application discloses nitrile rubber-chlorosulfonated polyethylene rubber, which comprises the following raw materials in parts by mass: 6-10 parts of chlorosulfonated polyethylene; 35-45 parts of nitrile rubber; 20-30 parts of a filler; 0.4-1.5 parts of reinforcing agent; 1-3 parts of carbon black; 5-12 parts of a plasticizer; 0.4-1.2 parts of a vulcanizing agent; 8-16 parts of a 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 rubber has the effects of good processability and good anti-cracking performance 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 the rapid development of the automobile industry, the requirements of automobile rubber hoses on rubber materials are increasing, and chlorosulfonated polyethylene rubber (CSM) materials are widely applied to automobile connecting rubber hoses such as automobile air-vent rubber hoses due to good heat resistance, aging resistance, flame resistance and medium resistance.

Chlorosulfonated polyethylene (CSM) is an elastomer material having a highly saturated chain structure, which is mainly produced from polyethylene as a raw material through chlorination and chlorosulfonation. However, since chlorosulfonated polyethylene (CSM) is a saturated rubber having polar side groups, it has poor crack resistance and unstable dynamic properties, and its application is limited.

Disclosure of Invention

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

The application provides a nitrile rubber-chlorosulfonated polyethylene rubber adopts following technical scheme:

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

6-10 parts of chlorosulfonated polyethylene;

35-45 parts of nitrile rubber;

20-30 parts of a filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

5-12 parts of a plasticizer;

0.4-1.2 parts of a vulcanizing agent;

8-16 parts of a processing aid.

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

Meanwhile, reinforcing agent, filler and carbon black are mixed into the composite base material consisting of chlorosulfonated polyethylene and nitrile rubber, so that the compatibility of the chlorosulfonated polyethylene and the nitrile rubber is enhanced, and the crosslinking degree of the obtained composite rubber material product is high. When external force is applied to the composite rubber material, the load of the force directly acts on a matrix of the composite rubber material, then the stress is transmitted to the reinforcing agent, the filler and the carbon black which respond, the deformation of the composite rubber material is limited through the reinforcement of the reinforcing agent, the filler and the carbon black, the shearing stress is generated on the part of a combination part, the load of the acting force is distributed on the reinforcing agent, the filler, the carbon black, the rubber material and a phase interface, the critical length-diameter ratio is reduced due to the increase of the shearing force of the combination part, the fracture mode of the composite rubber material belongs to the fracture of the reinforcing agent, the filler or the carbon black even at the position of a product turning position, the change of the strength of the composite rubber material is not large, the anti-fracture performance of the product is improved, and good strength can be kept even at the product turning position.

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 play roles of reinforcing and improving compatibility when being filled into the rubber material as the reinforcing agent.

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

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

After the aramid fiber is added, the viscosity and the hardness of the sizing material are correspondingly increased, 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 mass: acetate fibers: aramid fiber is 1: (1-2): (3-6).

By adopting the technical scheme, under the condition of the proportioning, the reinforcing effect of the compound three fibers on the sizing material is good.

Preferably, the reinforcing agent is a composite material of polyester fibers and acetate fibers, and the reinforcing agent is prepared by the following steps: the acetate, polyethylene terephthalate and maleic anhydride are melt blended and then pulverized into a fiber composite.

By adopting the technical scheme, the cross-linking degree between the acetate modified by the maleic anhydride and the polyethylene glycol 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 20-30 r/min.

By adopting the technical scheme, under the temperature condition, the acetate and the polyethylene glycol terephthalate are mutually fused, and then the maleic anhydride is used for grafting, so that the compatibility and the grafting rate of the acetate and the polyethylene glycol terephthalate are improved, and the advantages of stable structure and the compatibility of the acetate and the polyethylene glycol terephthalate are obtained.

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

By adopting the technical scheme, under the condition of the mixture ratio, the hydroxyl functional group and the carbonyl functional group of the acetate and the polyethylene glycol terephthalate enable the acetate and the polyethylene glycol terephthalate to have good compatibility, and the obtained reinforcing agent has high structural crosslinking degree and good compactness, so that the strength, the tear 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 increased, the elongation at break and the tensile strength of the sizing material are correspondingly increased, and when the content of the maleic anhydride is more than 5%, the mechanical property and the toughness of the sizing material are gradually reduced, so that the interface compatibility of the acetate and the polyethylene glycol terephthalate can be remarkably improved by the maleic anhydride in the addition range, and the function of toughening the sizing material is achieved.

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

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

The addition of the plasticizers DINP and MESAMOLL can generate 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 a filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

5-12 parts of a plasticizer;

8-15 parts of a flow aid;

0.4-1.2 parts of a vulcanizing agent;

0.1-0.3 part of dispersant;

0.2 to 0.6 portion of scorch retarder.

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

Preferably, the dispersant is a WB212 dispersant.

Preferably, the scorch retarder is a CTP scorch retarder.

By adopting the technical scheme, the processing performance of the rubber material can be effectively improved by adding the flow additive and the dispersing agent, and the phenomenon of early vulcanization of the rubber material in the processing process can be prevented by adding the anti-scorching agent, so that the processing performance of the rubber material is improved.

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

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 temperature is 90-100 ℃, and discharging to obtain a master batch when the temperature is 120-130 ℃;

2) controlling the temperature at 60-70 ℃, mixing and banburying a vulcanizing agent and master batch, discharging when the temperature reaches 80-90 ℃ to obtain a rubber material, then thinly passing the rubber material for 2-4 times, pulling the sheet, and pulling the sheet for 240 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 can be quickly vulcanized under the action of the vulcanizing agent and the accelerator, the processability is good, and the vulcanization 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 easy 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 glycol terephthalate, and the reinforcing agent has better compatibility with sizing materials, carbon black and fillers and better filling effect;

Detailed Description

The present application is further illustrated in detail by reference to the following examples.

Examples of production of reinforcing agent

Preparation example 1

A strengthening agent is prepared by the following steps: mixing polyester fiber, acetate fiber and 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 strengthening agent is prepared by the following steps: mixing polyester fiber, acetate fiber and 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 strengthening agent is prepared by the following steps: mixing polyester fiber, acetate fiber and 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 strengthening agent is prepared by the following steps: 6kg of cellulose diacetate, 1kg of polyethylene terephthalate and 0.14kg of maleic anhydride are subjected to melt blending in an internal mixer at the temperature of 200 ℃ and the rotation speed of 30r/min for 240s, then the mixture is discharged and cooled, and then the mixture is crushed and sieved by a sieve of 80 meshes to obtain the reinforcing agent.

Preparation example 5

A strengthening agent is prepared by the following steps: 6kg of cellulose diacetate, 2kg of polyethylene terephthalate and 0.4kg of maleic anhydride are subjected to melt blending in an internal mixer at the temperature of 250 ℃ and the rotation speed of 20r/min for 180s, then the mixture is discharged and cooled, and then the mixture is crushed and sieved by a sieve of 80 meshes to obtain the reinforcing agent.

Preparation example 6

A strengthening agent is prepared by the following steps: 6kg of cellulose diacetate, 6kg of polyethylene terephthalate and 0.6kg of maleic anhydride are subjected to melt blending in an internal mixer at the temperature of 245 ℃ and the rotating speed of 22r/min for 180s, then the materials are discharged and cooled, and then the materials are crushed and sieved by a sieve of 80 meshes 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, 45kg of nitrile rubber is subjected to banburying for 190s at the temperature of 120 ℃, then 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 are added for continuous banburying, when the banburying is carried out to 90 ℃, 8kg of flow additive PW-80A (RC-15) is added, and when the temperature is 120 ℃, the mother rubber is obtained through discharging;

2) controlling the temperature at 70 ℃, mixing and banburying 0.4kg of vulcanizing agent TMTD and master batch, discharging when the temperature reaches 80 ℃ to obtain a rubber material, thinly passing the rubber material for 2 times, pulling the sheet, and pulling the sheet for 300s to obtain the rubber.

Example 2

1) firstly, banburying 40kg of nitrile rubber for 170s at the temperature of 130 ℃, 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 sieve with 80 meshes) and 7.3kg of plasticizer DINP for continuous banburying, adding 11.9kg of flow aid PW-80A (RC-15) and 0.2kg of dispersing agent WB212 when the banburying temperature is 100 ℃, and discharging to obtain master batch when the temperature is 130 ℃;

2) controlling the temperature at 60 ℃, mixing and banburying 0.3kg of vulcanization accelerator DM, 0.3kg of vulcanization accelerator TT and master batch, discharging when the temperature reaches 90 ℃ to obtain a rubber material, thinly passing the rubber material for 4 times, pulling the sheet, and pulling the sheet for 240s to obtain the rubber.

Example 3

1) firstly, 36kg of nitrile rubber is subjected to banburying for 180s at the temperature of 130 ℃, then 15kg of chlorosulfonated polyethylene, 3kg of carbon black, 8kg of magnesium oxide, 14kg of titanium dioxide, 0.4kg of aramid fiber (crushed and sieved by a sieve with 80 meshes) and 6.3kg of plasticizer MESAMORL are added for continuous banburying, when the banburying is carried out to 100 ℃, 15.2kg of flow additive PW-80A (RC-15), 0.3kg of dispersant WB212 and 0.6kg of scorch retarder CTP are added, and when the temperature is 125 ℃, the materials are discharged to obtain master batch;

2) controlling the temperature at 65 ℃, mixing and banburying 0.6kg of vulcanization accelerator TT, 0.6kg of vulcanization accelerator TETD and master batch, discharging when the temperature reaches 85 ℃ to obtain a rubber material, then thinly passing the rubber material for 4 times, pulling the sheet, and pulling the sheet for 240s to obtain the rubber.

Example 4

1) firstly, banburying 40kg of nitrile rubber for 180s at the temperature of 130 ℃, 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 MESAMOLL for continuous banburying, when the banburying is carried out to 100 ℃, adding 9.6kg of flow aid PW-80A (RC-15), 0.1kg of dispersant WB212 and 0.2kg of scorch retarder CTP, and when the temperature is 125 ℃, discharging to obtain master batch; 2) controlling the temperature at 65 ℃, mixing and banburying 0.2kg of vulcanization accelerator TT, 0.2kg of vulcanization accelerator TETD, 0.1kg of vulcanization accelerator DM and master batch, discharging when the temperature reaches 85 ℃ to obtain a rubber material, then thinly passing the rubber material for 4 times, pulling the sheet, and pulling the sheet for 240s to obtain the rubber.

Example 5

The difference from example 4 is that the reinforcing agent obtained in preparation example 1 was replaced with the same amount of reinforcing agent obtained in preparation example 2.

Example 6

The difference from example 4 is that the reinforcing agent obtained in preparation example 1 was replaced with the same amount of reinforcing agent obtained in preparation example 3.

Example 7

The difference from example 4 is that the reinforcing agent obtained in preparation example 1 was replaced with the same amount of reinforcing agent obtained in preparation example 4.

Example 8

The difference from example 4 is that the reinforcing agent obtained in preparation example 1 was replaced with the same amount of reinforcing agent obtained in preparation example 5.

Example 9

The difference from example 4 is that the reinforcing agent obtained in preparation example 1 was replaced with the same amount of reinforcing agent obtained in preparation example 6.

Comparative example 1

1) firstly, 45kg of nitrile rubber is subjected to banburying for 190s at the temperature of 120 ℃, then 6kg of chlorosulfonated polyethylene, 28.6kg of magnesium oxide and 12kg of plasticizer DINP are added for continuous banburying, 8kg of flow aid PW-80A (RC-15) is added when the temperature is 90 ℃, and when the temperature is 120 ℃, the material is discharged to obtain master batch;

Comparative example 2

1) firstly, 45kg of nitrile rubber is subjected to banburying for 190s at the temperature of 120 ℃, then 13.4kg of chlorosulfonated polyethylene, 3kg of carbon black, 11.2kg of magnesium oxide, 0.4kg of acetate fiber (which is crushed and sieved by a sieve with 80 meshes) and 12kg of plasticizer DINP are added for further banburying, 13.5kg of flow additive PW-80A (RC-15) is added when the temperature is 90 ℃, and when the temperature is 120 ℃, the mother rubber is obtained through discharging;

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, then thinly passing the sizing material for 2 times, pulling the sheet, and pulling the sheet for 300s to obtain the rubber.

Comparative example 3

1) firstly, 33kg of nitrile rubber is subjected to banburying for 190s at the temperature of 120 ℃, then 10kg of chlorosulfonated polyethylene, 5kg of carbon black, 38kg of magnesium oxide, 2.5kg of polyester fiber (crushed and sieved by a sieve with 80 meshes) and 6.7kg of plasticizer DINP are added for continuous banburying, 4.2kg of flow aid PW-80A (RC-15) is added when the banburying is carried out to 90 ℃, and when the temperature is 120 ℃, the masterbatch is obtained through discharging;

2) controlling the temperature at 70 ℃, mixing and banburying 0.6kg of vulcanizing agent TMTD and master batch, discharging when the temperature reaches 80 ℃ to obtain a rubber material, thinly passing the rubber material for 2 times, pulling the sheet, and pulling the sheet for 300s to obtain the rubber.

Performance detection

1. The tensile strength and elongation at break of the rubbers prepared 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, the test results are shown in the following table;

2. the rubber obtained in examples 1 to 9 and comparative examples 1 to 3 was measured for tear strength by using a square-shaped test specimen with reference to GB/T529-.

Table 1 table of performance test results

Item	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 is more than 20MPa, the elongation at break is more than 530%, and the tear strength is more than 45kN/m, while the tensile strength of the rubber prepared in the comparative examples is less than 20MPa, the elongation at break is less than 410%, and the tear strength is less than 38kN/m, which shows that the rubber prepared in the examples has better mechanical properties, better tensile strength, elongation at break and tear strength, and can improve the problem that the turning part of a rubber product is easy to crack.

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

According to the test results of the embodiments 4 to 9, it can be known that when the modified reinforcing agent is filled into rubber preparation, the reinforcing agent, carbon black and filler have better dispersion effect in rubber, and the reinforcing and filling effect on rubber is good, so that the rubber can obtain better crosslinking degree, and further the tensile strength, the elongation at break and the tear strength of the rubber are improved.

According to the test results of the examples 4 to 6, the ratio of the polyester fiber, the acetate fiber and the aramid fiber is 1: (1-2): and (3-6), the filling effect of each fiber on the sizing material is better, the lubricating effect on the sizing material is good, the processing performance is favorably improved, the stress borne by the rubber material is uniformly dispersed and acted on the fibers under the proportioning, and the cracking resistance of the rubber material is further improved.

According to the test results of the examples 4 to 6, the modified acetate, the modified polyethylene terephthalate and the modified maleic anhydride have the following components in parts by weight of 6: (1-2), when maleic anhydride is (2-5)% of the total mass of the acetate and the polyethylene terephthalate, the reinforcing agent has a better filling effect on the sizing material, and the lubricating effect on the sizing material is good, so that the processing performance is improved, the stress borne by the rubber material is uniformly dispersed and acted on the fiber under the proportion, and the anti-cracking performance of the rubber material is further improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

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

6-15 parts of chlorosulfonated polyethylene;

36-45 parts of nitrile rubber;

22-30 parts of a filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

6-12 parts of a plasticizer;

0.4-1.2 parts of a vulcanizing agent;

8-16 parts of a processing aid.

2. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 1, wherein: the reinforcing agent is at least one of polyester fiber, acetate fiber or aramid fiber.

3. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 2, wherein: 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).

4. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 2, wherein: the reinforcing agent is a composite material of polyester fibers and acetate fibers, and the reinforcing agent is prepared by the following steps: the acetate, polyethylene terephthalate and maleic anhydride are melt blended and then pulverized into a fiber composite.

5. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 4, wherein: the temperature in the melting process is 200-250 ℃, and the rotating speed is 20-30 r/min.

6. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 4, wherein: the mass part ratio of the acetate to the polyethylene glycol terephthalate is 6: (1-2).

7. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 4, wherein: the maleic anhydride accounts for (2-5)% of the total mass of the acetate and the polyethylene glycol terephthalate.

8. The nitrile rubber-chlorosulfonated polyethylene rubber according to claim 1, wherein: the filler is at least one of magnesium oxide, zinc oxide, titanium dioxide and light calcium.

9. The nitrile rubber-chlorosulfonated polyethylene rubber according to any one of claims 1 to 8, wherein: 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:

6-15 parts of chlorosulfonated polyethylene;

36-45 parts of nitrile rubber;

22-30 parts of a filler;

0.4-1.5 parts of reinforcing agent;

1-3 parts of carbon black;

6-12 parts of a plasticizer;

8-15 parts of a flow aid;

0.4-1.2 parts of a vulcanizing agent;

0.1-0.3 part of dispersant;

0.2 to 0.6 portion of scorch retarder.

10. The process for the preparation of nitrile rubber-chlorosulfonated polyethylene rubber according to any one of claims 1 to 9, comprising the steps of: