CN112679808A - Low-creep high-damping rubber material and preparation method and application thereof - Google Patents
Low-creep high-damping rubber material and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a low-creep high-damping rubber material and a preparation method and application thereof, belonging to the technical field of rubber materials. The invention combines graphite on the surface of the rubber macromolecule by using the siloxane coupling agent to form a lubricating layer, reduces the heat generated by mutual friction between the rubber macromolecules, prolongs the capability of the rubber macromolecules to keep elastic deformation, and improves the resilience of rubber products, thereby improving the creep property of the rubber material. The damping additive uses the mixture of the polyester long fiber and the mica powder, the polyester long fiber has the performance characteristics of high rigidity, high toughness, good creep resistance, excellent fatigue resistance and the like, and the polyester long fiber is inserted among the lamellar mica, so that the rubber material keeps good rebound resilience and creep resistance while the rubber material has high damping characteristic. The results of the examples show that the rubber support prepared by the rubber material of the invention has low creep and high damping property.
Description
Technical Field
The invention relates to the technical field of rubber materials, in particular to a low-creep high-damping rubber material and a preparation method and application thereof.
Background
Creep refers to the process of gradual increase of material deformation with time under the action of a certain temperature and constant external force, and is a 'mechanical relaxation' phenomenon. Creep is an important property of the rubber damping part, the creep can affect the dimensional stability and the service life of the high-damping rubber support, and the product can generate permanent deformation after being used for a period of time, so that the size of the product is changed. For bridges and building supports, the creep of rubber products is too large, and the operation safety of the bridges or buildings is affected.
In addition, the rubber support requires a rubber base material with good damping performance, and in order to enable the rubber base to have high damping characteristics, damping materials are often added, and the addition of the damping materials can increase the loss coefficient of rubber and further increase the creep of the rubber support in the long-term use process.
Disclosure of Invention
The invention aims to provide a low-creep high-damping rubber material, and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a low-creep high-damping rubber material which comprises the following preparation raw materials in parts by weight: 50-90 parts of deproteinized natural rubber, 10-50 parts of chloroprene rubber, 2-10 parts of graphite, 0.5-5 parts of siloxane coupling agent, 25-70 parts of carbon black, 10-30 parts of damping assistant, 4-8 parts of active agent, 5-15 parts of softener, 1-3 parts of vulcanizing agent, 1-3 parts of accelerator and 1-3 parts of anti-aging agent;
the damping additive is a mixture of polyester long fibers and mica powder.
Preferably, the mass ratio of the polyester long fibers to the mica powder is 3: 1.
preferably, the nitrogen content of the deproteinized natural rubber is less than or equal to 0.3%, the volatile content is less than or equal to 0.5%, the ash content is less than or equal to 0.2%, and the tensile strength is more than or equal to 20 MPa.
Preferably, the graphite has a diameter of 0.5-5 μm, a thickness of 0.8-1.2 nm and 1-3 layers.
Preferably, the siloxane coupling agent is one or more of KH-550, KH-570, KH-560, A-151 and A-171.
Preferably, the carbon black is one or more of N110, N115, N220, N330 and N774.
The invention provides a preparation method of the low-creep high-damping rubber material, which comprises the following steps:
carrying out first mixing on deproteinized natural rubber, chloroprene rubber, graphite and a siloxane coupling agent to obtain a master batch;
performing second mixing on the master batch, the activator, the anti-aging agent, the carbon black, the damping auxiliary agent and the softener to obtain intermediate rubber;
and carrying out third mixing on the intermediate rubber, the vulcanizing agent and the accelerator to obtain the low-creep high-damping rubber material.
Preferably, the rubber discharging temperature of the first mixing is 150-180 ℃; the rubber discharging temperature of the second mixing is 150-180 ℃; and the rubber discharging temperature of the third mixing is 50-80 ℃.
The invention provides an application of the low-creep high-damping rubber material or the low-creep high-damping rubber material prepared by the preparation method in the scheme in the preparation of a rubber support;
the method of application comprises the steps of:
and (3) placing the low-creep high-damping rubber material and the steel plate in a laminated manner, and vulcanizing to obtain the rubber support.
Preferably, the vulcanizing temperature is 120-140 ℃, the vulcanizing pressure is 6-15 MPa, and the vulcanizing time is 4-24 h.
The invention provides a low-creep high-damping rubber material which comprises the following preparation raw materials in parts by weight: 50-90 parts of deproteinized natural rubber, 10-50 parts of chloroprene rubber, 2-10 parts of graphite, 0.5-5 parts of siloxane coupling agent, 25-70 parts of carbon black, 10-30 parts of damping assistant, 4-8 parts of active agent, 5-15 parts of softener, 1-3 parts of vulcanizing agent, 1-3 parts of accelerator and 1-3 parts of anti-aging agent; the damping additive is a mixture of polyester long fibers and mica powder.
The invention combines graphite on the surface of rubber macromolecules by siloxane coupling agent to form a lubricating layer, reduces heat generated by mutual friction between the rubber macromolecules, prolongs the capability of the rubber macromolecules for keeping elastic deformation, and improves the resilience of rubber products, thereby improving the creep property of rubber materials. The damping additive uses the mixture of the polyester long fiber and the mica powder, the polyester long fiber has the performance characteristics of high rigidity, high toughness, good creep resistance, excellent fatigue resistance and the like, and the polyester long fiber is inserted among the lamellar mica, so that the rubber material keeps good rebound resilience and creep resistance while the rubber material has high damping characteristic.
The results of the examples show that the rubber support prepared by the rubber material of the invention has low creep and high damping property.
Detailed Description
The invention provides a low-creep high-damping rubber material which comprises the following preparation raw materials in parts by weight: 50-90 parts of deproteinized natural rubber, 10-50 parts of chloroprene rubber, 2-10 parts of graphite, 0.5-5 parts of siloxane coupling agent, 25-70 parts of carbon black, 10-30 parts of damping assistant, 4-8 parts of active agent, 5-15 parts of softener, 1-3 parts of vulcanizing agent, 1-3 parts of accelerator and 1-3 parts of anti-aging agent;
the damping additive is a mixture of polyester long fibers and mica powder.
The low-creep high-damping rubber material comprises, by weight, 50-90 parts of deproteinized natural rubber, preferably 60-80 parts, and more preferably 65-75 parts. In the present invention, the deproteinized natural rubber preferably has a nitrogen content of 0.3% or less, a volatile content of 0.5% or less, an ash content of 0.2% or less, and a tensile strength of 20MPa or more. Compared with common natural rubber, the deproteinized natural rubber adopted by the invention has lower creep property.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 10-50 parts of chloroprene rubber, preferably 20-40 parts, and further preferably 25-35 parts.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 2-10 parts of graphite, preferably 3-9 parts, and more preferably 4-8 parts. In the invention, the diameter of the graphite is preferably 0.5-5 μm, the thickness is preferably 0.8-1.2 nm, and the number of layers is preferably 1-3. The invention utilizes graphite to reduce the intermolecular friction of the natural rubber.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 0.5-5 parts of siloxane coupling agent, preferably 1-4 parts, and more preferably 2-3 parts. In the present invention, the siloxane coupling agent is preferably one or more of KH-550, KH-570, KH-560, A-151 and A-171. When the siloxane coupling agent is a plurality of the substances, the proportion of each substance is not particularly required, and any proportion can be adopted. The invention combines graphite on the surface of rubber macromolecules by siloxane coupling agent to form a lubricating layer, reduces heat generated by mutual friction between the rubber macromolecules, prolongs the capability of the rubber macromolecules for keeping elastic deformation, and improves the resilience of rubber products, thereby improving the creep property of rubber materials.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 25-70 parts of carbon black, preferably 30-60 parts of carbon black, and more preferably 40-50 parts of carbon black. In the present invention, the carbon black is preferably one or more of N110, N115, N220, N330 and N774. When the carbon black is a plurality of the above substances, the invention has no special requirements on the mixture ratio of the substances and can be used in any mixture ratio. In the present invention, the carbon black serves to reinforce the natural rubber.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 10-30 parts of damping assistant, preferably 15-25 parts, and more preferably 17-23 parts. In the invention, the damping additive is a mixture of polyester long fiber and mica powder. In the present invention, the diameter of the long fiber is preferably 0.2 to 0.6mm, more preferably 0.3 to 0.5 mm; the length is preferably 10 to 30mm, and more preferably 15 to 25 mm.
In the present invention, the mass ratio of the polyester long fibers to the mica powder is preferably 3: 1. the damping additive uses the mixture of the polyester long fiber and the mica powder, the long fiber has the performance characteristics of high rigidity, high toughness, good creep resistance, excellent fatigue resistance and the like, and the polyester long fiber is inserted among the lamellar mica, so that the rubber material keeps good rebound resilience and creep resistance while the rubber material has high damping characteristic.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 4-8 parts of an active agent, preferably 5-7 parts, and more preferably 5.5-6.5 parts. In the present invention, the active agent is preferably a mixture of stearic acid and zinc oxide. The mass ratio of stearic acid to zinc oxide is preferably 1: (1.5 to 3). In the invention, the activator has the functions of reducing the activation energy of the vulcanizing agent and the accelerator and improving the vulcanization reaction speed. .
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 5-15 parts of a softening agent, preferably 7-13 parts, and more preferably 8-12 parts. In the invention, the softener comprises one or more of engine oil, paraffin oil, naphthenic oil, aromatic oil, dioctyl ester and dibutyl ester. When the quantity of the softening agent is more than one, the invention has no special requirements on the proportion of each softening agent, and the softening agent can be prepared in any proportion. In the present invention, the softener functions to adjust rubber hardness and elastic modulus.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 1-3 parts of vulcanizing agent, preferably 1.5-2.5 parts, and more preferably 1.7-2.2 parts. In the present invention, the vulcanizing agent preferably includes sulfur.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 1-3 parts of an accelerator, preferably 1.2-2.5 parts, and more preferably 1.5-2.0 parts. In the present invention, the accelerator is preferably N-cyclohexyl-2-benzothiazolesulfenamide.
Based on the weight parts of the deproteinized natural rubber, the low-creep high-damping rubber material provided by the invention comprises 1-3 parts of an anti-aging agent, preferably 1.3-2.7 parts, and more preferably 1.5-2.3 parts. In the present invention, the antioxidant is preferably N-isopropyl-N' -phenyl-p-phenylenediamine.
The invention provides a preparation method of the low-creep high-damping rubber material, which comprises the following steps:
carrying out first mixing on deproteinized natural rubber, chloroprene rubber, graphite and a siloxane coupling agent to obtain a master batch;
performing second mixing on the master batch, the activator, the anti-aging agent, the carbon black, the damping auxiliary agent and the softener to obtain intermediate rubber;
and carrying out third mixing on the intermediate rubber, the vulcanizing agent and the accelerator to obtain the low-creep high-damping rubber material.
The method comprises the steps of carrying out first mixing on deproteinized natural rubber, chloroprene rubber, graphite and a siloxane coupling agent to obtain a master batch.
According to the invention, deproteinized natural rubber, chloroprene rubber, graphite and a siloxane coupling agent are preferably added into an internal mixer to carry out first mixing. In the present invention, the rotation speed of the first kneading is preferably 40 to 70r/min, more preferably 45 to 65r/min, and still more preferably 50 to 60 r/min. In the invention, the rubber discharging temperature of the first mixing is preferably 150-180 ℃, and more preferably 160-170 ℃.
After the master batch is obtained, the master batch, the activator, the anti-aging agent, the carbon black, the damping auxiliary agent and the softener are subjected to second mixing to obtain an intermediate rubber.
In the invention, the master batch is preferably put into an internal mixer, and the activator, the anti-aging agent, the carbon black, the damping aid and the softener are added for secondary mixing. In the present invention, the temperature of the second kneading is preferably 120 to 150 ℃, more preferably 125 to 145 ℃, and further preferably 130 to 140 ℃.
After the intermediate rubber compound is obtained, the intermediate rubber compound, the vulcanizing agent and the accelerator are subjected to third mixing to obtain the low-creep high-damping rubber material.
In the present invention, the third mixing is preferably carried out in an open mill. In the invention, the rubber discharging temperature of the third mixing is preferably 50-80 ℃, and more preferably 60-70 ℃. The invention prefers 3 times of the reverse smelting.
The invention provides an application of the low-creep high-damping rubber material or the low-creep high-damping rubber material prepared by the preparation method in the scheme in the preparation of a rubber support;
the method of application comprises the steps of:
and (3) placing the low-creep high-damping rubber material and the steel plate in a laminated manner, and vulcanizing to obtain the rubber support.
The invention has no special requirements on the laminating mode and the number of layers, and the laminating mode and the number of layers can be all known in the field.
In the invention, the vulcanization temperature is preferably 120-140 ℃, and more preferably 125-135 ℃; the vulcanization pressure is preferably 6-15 MPa, and more preferably 8-12 MPa; the time for vulcanization is preferably 4 to 24 hours, more preferably 8 to 20 hours, and further preferably 10 to 15 hours.
The low creep and high damping rubber material provided by the present invention, the preparation method and application thereof are described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
The nitrogen content of the deproteinized natural rubber used in the following examples is not more than 0.3%, the volatile content is not more than 0.5%, the ash content is not more than 0.2%, and the tensile strength is not less than 20 MPa; the graphite has a diameter of 0.5 to 5 μm, a thickness of 0.8 to 1.2nm, and 1 to 3 layers.
Example 1
Adding 50 parts by weight of deproteinized natural rubber, 50 parts by weight of chloroprene rubber, 2 parts by weight of graphite and 0.5 part by weight of siloxane coupling agent A-151 into an internal mixer, setting the rotating speed to be 40r/min, and mixing to 150 ℃ for rubber discharge to obtain master batch;
putting the master batch into an internal mixer, adding 4 parts by weight of an active agent (1 part by weight of stearic acid and 3 parts by weight of zinc oxide), 1 part by weight of an anti-aging agent N-isopropyl-N' -phenyl-p-phenylenediamine, 25 parts by weight of carbon black N110, 30 parts by weight of a damping aid (a mixture of 22.5 parts by weight of polyester long fibers and 7.5 parts by weight of mica powder) and 5 parts by weight of a softening agent paraffin oil, and mixing to 120 ℃ to discharge rubber to obtain intermediate rubber;
and (3) performing reverse milling on the intermediate rubber, 1 part by weight of sulfur serving as a vulcanizing agent and 3 parts by weight of N-cyclohexyl-2-benzothiazole sulfonamide serving as an accelerator on an open mill for 3 times to prepare the rubber material.
Preparing a rubber support:
the rubber material and the steel plate of the embodiment are placed in a laminated manner, and are subjected to pressure heating vulcanization on a flat vulcanizing machine, wherein the vulcanization temperature is 120 ℃, the vulcanization pressure is 15MPa, and the vulcanization time is 4 hours, so that the rubber support is obtained.
Example 2
Adding 90 parts by weight of deproteinized natural rubber, 10 parts by weight of chloroprene rubber, 10 parts by weight of graphite and 5 parts by weight of siloxane coupling agent A-171 into an internal mixer, setting the rotating speed to be 70r/min, and mixing to 180 ℃ for rubber discharge to obtain master batch;
putting the master batch into an internal mixer, adding 8 parts by weight of an active agent (3 parts by weight of stearic acid and 5 parts by weight of zinc oxide), 3 parts by weight of an anti-aging agent N-isopropyl-N' -phenyl-p-phenylenediamine, 70 parts by weight of carbon black N774, 10 parts by weight of a damping aid (a mixture of 7.5 parts by weight of polyester long fibers and 2.5 parts by weight of mica powder) and 5 parts by weight of dioctyl softener, and mixing to 150 ℃ to discharge rubber to obtain intermediate rubber;
and (3) performing reverse milling on the intermediate rubber, 3 parts by weight of sulfur serving as a vulcanizing agent and 1 part by weight of N-cyclohexyl-2-benzothiazole sulfonamide serving as an accelerator on an open mill for 3 times to prepare the rubber material.
Preparing a rubber support:
the rubber material and the steel plate of the embodiment are placed in a laminated manner, and are subjected to pressure heating vulcanization on a flat vulcanizing machine, wherein the vulcanization temperature is 140 ℃, the vulcanization pressure is 6MPa, and the vulcanization time is 24 hours, so that the rubber support is obtained.
Example 3
Adding 60 parts by weight of deproteinized natural rubber, 40 parts by weight of chloroprene rubber, 4 parts by weight of graphite and 1 part by weight of siloxane coupling agent (KH-550) into an internal mixer, setting the rotating speed to be 50r/min, and mixing to 160 ℃ for rubber discharge to obtain master batch;
putting the master batch into an internal mixer, adding 6 parts by weight of an active agent (2 parts by weight of stearic acid and 4 parts by weight of zinc oxide), 2 parts by weight of an anti-aging agent N-isopropyl-N' -phenyl-p-phenylenediamine, 35 parts by weight of carbon black N110, 12 parts by weight of a damping auxiliary agent (a mixture of 9 parts by weight of polyester long fibers and 3 parts by weight of mica powder), 8 parts by weight of softener oil, mixing to 130 ℃ to discharge rubber, adding 1.5 parts by weight of vulcanizing agent sulfur and 2 parts by weight of an accelerator N-cyclohexyl-2-benzothiazole sulfenamide into an open mill, and performing reverse mixing for 3 times to prepare a rubber sheet for later use;
preparing a rubber support:
the rubber material and the steel plate of the embodiment are stacked and placed, and are subjected to pressure heating vulcanization on a flat vulcanizing machine, wherein the vulcanization temperature is 100 ℃, the vulcanization pressure is 12MPa, and the vulcanization time is 18h, so that the rubber support is obtained.
Example 4
Adding 70 parts by weight of natural rubber, 30 parts by weight of chloroprene rubber, 8 parts by weight of graphite and 3 parts by weight of siloxane coupling agent (KH-570) into an internal mixer, setting the rotating speed to be 60r/min, and mixing to 170 ℃ to discharge rubber to obtain master batch;
putting the master batch into an internal mixer, adding 6 parts by weight of an active agent (1.5 parts by weight of stearic acid and 4.5 parts by weight of zinc oxide), 2.5 parts by weight of an anti-aging agent (N-isopropyl-N' -phenyl-p-phenylenediamine), 45 parts by weight of carbon black N220, 20 parts by weight of a damping aid (a mixture of 15 parts by weight of polyester long fibers and 5 parts by weight of mica powder) and 10 parts by weight of a softener (naphthenic oil), and discharging when the temperature is 145 ℃ after mixing to obtain an intermediate rubber;
and (3) performing reverse milling on the intermediate rubber, 2 parts by weight of a vulcanizing agent (sulfur) and 2 parts by weight of an accelerator (N-cyclohexyl-2-benzothiazole sulfonamide) on an open mill for 3 times to prepare the rubber material.
Preparing a rubber support:
the rubber material and the steel plate of the embodiment are stacked and placed, and are subjected to pressure heating vulcanization on a flat vulcanizing machine, wherein the vulcanization temperature is 135 ℃, the vulcanization pressure is 10MPa, and the vulcanization time is 14h, so that the rubber support is obtained.
Example 5
Adding 80 parts by weight of natural rubber, 20 parts by weight of chloroprene rubber, 6 parts by weight of graphite and 4 parts by weight of siloxane coupling agent (KH-570) into an internal mixer, setting the rotating speed to 65r/min, and mixing to 155 ℃ for rubber discharge to obtain master batch;
putting the master batch into an internal mixer, adding 7 parts by weight of an active agent (2 parts by weight of stearic acid and 5 parts by weight of zinc oxide), 2.5 parts by weight of an anti-aging agent (N-isopropyl-N' -phenyl-p-phenylenediamine), 60 parts by weight of carbon black (N330) and 24 parts by weight of a damping aid (a mixture of 18 parts by weight of polyester long fibers and 6 parts by weight of mica powder), and discharging rubber when the mixture is mixed to 145 ℃ to obtain intermediate rubber;
and (3) mixing the intermediate rubber, 2.3 parts by weight of a vulcanizing agent (sulfur) and 1.8 parts by weight of an accelerator (N-cyclohexyl-2-benzothiazole sulfonamide) on an open mill for 3 times to prepare the rubber material.
Preparing a rubber support:
the rubber material and the steel plate of the embodiment are stacked and placed, and are subjected to pressure heating vulcanization on a flat vulcanizing machine, wherein the vulcanization temperature is 130 ℃, the vulcanization pressure is 8MPa, and the vulcanization time is 12 hours, so that the rubber support is obtained.
Comparative example 1
The difference from example 5 is that the hindered phenol type damping agent is changed to AO-80.
Comparative example 2
The difference from example 1 is that no siloxane coupling agent was used.
And (3) performance testing:
the high damping rubber supports prepared in the examples 1 to 5 and the comparative examples 1 to 2 are subjected to physical property detection according to the standard GB20688.2-2006, and the detection results are shown in Table 1.
TABLE 1 Performance of the supports prepared in examples 1-5
As can be seen from the results in Table 1, in the comparative examples 1 to 2, the creep property of the obtained support is poorer than that of the supports in the examples 1 to 5 because the siloxane coupling agent is not used or the conventional damping auxiliary agent is used.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The low-creep high-damping rubber material is characterized by comprising the following preparation raw materials in parts by weight: 50-90 parts of deproteinized natural rubber, 10-50 parts of chloroprene rubber, 2-10 parts of graphite, 0.5-5 parts of siloxane coupling agent, 25-70 parts of carbon black, 10-30 parts of damping assistant, 4-8 parts of active agent, 5-15 parts of softener, 1-3 parts of vulcanizing agent, 1-3 parts of accelerator and 1-3 parts of anti-aging agent;
the damping additive is a mixture of polyester long fibers and mica powder.
2. The low creep high damping rubber material according to claim 1, wherein the mass ratio of the polyester long fibers to the mica powder is 3: 1.
3. the low creep high damping rubber material according to claim 1, wherein the deproteinized natural rubber has a nitrogen content of 0.3% or less, a volatile content of 0.5% or less, an ash content of 0.2% or less, and a tensile strength of 20MPa or more.
4. The low creep and high damping rubber material according to claim 1, wherein the graphite has a diameter of 0.5 to 5 μm, a thickness of 0.8 to 1.2nm, and 1 to 3 layers.
5. The low creep high damping rubber material of claim 1, wherein the siloxane coupling agent is one or more of KH-550, KH-570, KH-560, a-151, and a-171.
6. The low creep high damping rubber material of claim 1, wherein the carbon black is one or more of N110, N115, N220, N330 and N774.
7. A method for preparing the low-creep high-damping rubber material as claimed in any one of claims 1 to 6, comprising the following steps:
carrying out first mixing on deproteinized natural rubber, chloroprene rubber, graphite and a siloxane coupling agent to obtain a master batch;
performing second mixing on the master batch, the activator, the anti-aging agent, the carbon black, the damping auxiliary agent and the softener to obtain intermediate rubber;
and carrying out third mixing on the intermediate rubber, the vulcanizing agent and the accelerator to obtain the low-creep high-damping rubber material.
8. The preparation method according to claim 1, wherein the rubber discharge temperature of the first mixing is 150-180 ℃; the rubber discharging temperature of the second mixing is 150-180 ℃; and the rubber discharging temperature of the third mixing is 50-80 ℃.
9. Use of the low creep high damping rubber material according to any one of claims 1 to 6 or the low creep high damping rubber material prepared by the preparation method according to claim 8 or 9 in the preparation of a rubber support;
the method of application comprises the steps of:
and (3) placing the low-creep high-damping rubber material and the steel plate in a laminated manner, and vulcanizing to obtain the rubber support.
10. The use according to claim 9, wherein the vulcanization temperature is 120-140 ℃, the vulcanization pressure is 6-15 MPa, and the vulcanization time is 4-24 h.
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