1. The ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 2-3 parts of calcium carbonate, 6-8 parts of carbon black, 2-3 parts of zinc oxide, 2-3 parts of ethyl carbamate and 0.5-5.5 parts of peroxide, wherein the activating agent comprises the following components in parts by weight: 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, wherein the softener comprises the following components in percentage by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

2. The ethylene-propylene-diene monomer reclaimed rubber and the preparation method thereof according to claim 1, wherein the production process and conditions are as follows:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

Background

Ethylene Propylene Diene monomer, which is a copolymer of ethylene, Propylene and a small amount of non-conjugated Diene, is one of ethylene Propylene rubbers, and its main chain is composed of chemically stable saturated hydrocarbons, and only contains unsaturated double bonds in the side chains, so that it has excellent aging resistance such as ozone resistance, heat resistance, weather resistance, etc., and can be widely used in the fields of automobile parts, waterproof materials for buildings, wire and cable sheaths, heat-resistant rubber tubes, tapes, automobile seals, etc.

Ethylene propylene diene monomer is more and more emphasized by people due to the structural characteristics, but the traditional ethylene propylene diene monomer has certain disadvantages in practical application, such as the problem that the rubber aging speed is accelerated and the cracking is accompanied when the ethylene propylene diene monomer is used at high temperature.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the ethylene-propylene-diene monomer reclaimed rubber and the preparation method thereof aiming at the technical defects, the invention adds peroxides with different components into the ingredients of the ethylene-propylene-diene monomer reclaimed rubber, so that the ethylene-propylene-diene monomer crosslinked by the peroxides can be used under harsh conditions, and the problem of rapid aging is not easy to occur when the ethylene-propylene-diene monomer reclaimed rubber is used at high temperature, thereby greatly improving the structural characteristics of the ethylene-propylene-diene monomer rubber and enabling the ethylene-propylene-diene monomer reclaimed rubber to be more in line with the actual use.

In order to solve the technical problems, the invention provides ethylene propylene diene monomer rubber and a preparation method thereof, and aims to provide ethylene propylene diene monomer reclaimed rubber with ageing resistance and strong tensile property and a preparation method thereof.

The technical scheme provided by the invention is as follows: the ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 2-3 parts of calcium carbonate, 6-8 parts of carbon black, 2-3 parts of zinc oxide, 2-3 parts of ethyl carbamate and 0.5-5.5 parts of peroxide, wherein the activating agent comprises the following components in parts by weight: 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, wherein the softener comprises the following components in percentage by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

The ethylene propylene diene monomer reclaimed rubber and the preparation method thereof comprise the following production processes and conditions:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

The invention has the beneficial effects that: according to the invention, the peroxide with different components is added into the ingredients of the reclaimed ethylene propylene diene rubber, so that the ethylene propylene diene rubber crosslinked by the peroxide can be used under harsh conditions, and the problem of rapid aging is not easy to occur when the ethylene propylene diene rubber is used at a high temperature, thereby greatly improving the structural characteristics of the ethylene propylene diene rubber and enabling the ethylene propylene diene rubber to be more in line with practical use.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: the ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 2-3 parts of calcium carbonate, 6-8 parts of carbon black, 2-3 parts of zinc oxide, 2-3 parts of ethyl carbamate and 0.5-5.5 parts of peroxide, wherein the activating agent comprises the following components in parts by weight: 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, wherein the softener comprises the following components in percentage by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

The ethylene propylene diene monomer reclaimed rubber and the preparation method thereof comprise the following production processes and conditions:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

In order to facilitate understanding of the ethylene propylene diene monomer reclaimed rubber and the manufacturing method thereof provided by the embodiment of the invention, the following detailed description is provided with reference to specific embodiments.

In the specific implementation:

example 1:

the ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 2 parts of calcium carbonate, 6 parts of carbon black, 2 parts of zinc oxide, 2-3 parts of ethyl carbamate and 0.5 part of peroxide, wherein the activating agent comprises the following components in parts by weight: 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, wherein the softener comprises the following components in percentage by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

The ethylene propylene diene monomer reclaimed rubber and the preparation method thereof are characterized by comprising the following production processes and conditions:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

Example 2:

the ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 3 parts of calcium carbonate, 8 parts of carbon black, 3 parts of zinc oxide, 2-3 parts of ethyl carbamate and 5.5 parts of peroxide, wherein the activating agent comprises the following components in parts by weight: 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, wherein the softener comprises the following components in percentage by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

The ethylene propylene diene monomer reclaimed rubber and the preparation method thereof are characterized by comprising the following production processes and conditions:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

Example 3:

the ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 2 parts of calcium carbonate, 6 parts of carbon black, 2 parts of zinc oxide, 2-3 parts of ethyl carbamate and 3 parts of peroxide, wherein the activating agent comprises the following components in parts by weight: 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, wherein the softener comprises the following components in percentage by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

The ethylene propylene diene monomer reclaimed rubber and the preparation method thereof are characterized by comprising the following production processes and conditions:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

Example 4:

the ethylene-propylene-diene monomer reclaimed rubber is characterized by comprising the ethylene-propylene-diene monomer reclaimed rubber, wherein the ethylene-propylene-diene monomer reclaimed rubber comprises the following ingredients in parts by weight: 80 parts of ethylene propylene diene monomer waste rubber, 1.5 parts of an activating agent, 1 part of softening oil, 3 parts of calcium carbonate, 8 parts of carbon black, 3 parts of zinc oxide, 3 parts of ethyl carbamate and 3 parts of peroxide, wherein the activating agent comprises 55% of stearic acid, 25% of lead oxide and 20% of magnesium oxide, and the softening agent comprises the following components in parts by weight: 45% of cyclane, 30% of coumarone, 20% of asphalt and 5% of fatty acid.

The ethylene propylene diene monomer reclaimed rubber and the preparation method thereof are characterized by comprising the following production processes and conditions:

(1) crushing: putting the ethylene propylene diene monomer waste rubber into a crusher to perform crushing operation to obtain crushed waste rubber;

(2) washing: putting the waste rubber which passes through the crusher into a detergent for washing operation, fully washing and removing mud impurities and the like to obtain clean waste rubber fragments;

(3) drying: putting the washed rubber fragments into a dryer, and drying for 10 minutes to obtain dried waste rubber fragments;

(4) mixing: weighing waste rubber fragments in advance, putting the waste rubber fragments and other ingredients into a mixing mill according to the ingredient components and the mass parts in the claim 1, setting the temperature to be 80 ℃, adjusting the pressure of the internal mixer to be 0.8MPa, mixing for 20 minutes, and performing rubber discharge after mixing;

(5) extruding: tabletting and cooling the rubber material after rubber discharge, and then putting the rubber material into a screw extruder for extrusion;

(6) cooling and shaping: and (3) shaping the product extruded by the screw extruder to obtain a finished product of the ethylene propylene diene monomer reclaimed rubber.

The properties of the EPDM rubbers obtained in the examples are shown in Table 1.

Serial number	Item	Control group	Example 1	Example 2	Example 3	Example 4
							1	Shore Hardness (HA)	61.5	62.1	61.9	62	62.3
2	Tensile Length (MPa)	10.5	10.3	106	9.9	10.1
							3	Elongation at Break (%)	469	475	466	480	472
4	Hot air aging rebound Rate (%)	70	55.2	56.1	55.8	56.2
							5	Low temperature brittleness (-40 ℃ C.)	Fracture of	Without cracking	Without cracking	Without cracking	Without cracking
5	Aging resistance	Surface having cracks	No cracking on the surface	No cracking on the surface	No cracking on the surface	No cracking on the surface

The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the invention belongs to the common knowledge in the field, and the invention is mainly used for protecting the mechanical arrangement, so the control mode and the circuit connection are not explained in detail in the invention.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification made without departing from the spirit and scope of the present invention represents an equivalent substitution representing improvement and the like, and shall be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims or the equivalents of such scope and boundary.