CN112280126A - Multifunctional rubber material and preparation method and application thereof - Google Patents
Multifunctional rubber material and preparation method and application thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
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- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention relates to the technical field of rubber, in particular to a multifunctional rubber material and a preparation method and application thereof. The invention discloses a multifunctional rubber material which has multiple functions of acid-base, antibiosis, static prevention, puncture resistance and the like, and also has the characteristics of flame retardance, wear resistance, skid resistance, moisture prevention, easiness in cleaning and maintenance and the like.
Description
Technical Field
The invention relates to the technical field of rubber, in particular to a multifunctional rubber material and a preparation method and application thereof.
Background
Rubber flooring has been popular in developed countries abroad for decades and is widely used. The traditional rubber floor composition is mainly prepared from natural rubber, synthetic rubber and some rubber additives, can be only used in relatively common environmental areas, but is not suitable for areas with special performance requirements, such as laboratories, chemical plants, ships and other areas which need to be easily corroded by acid and alkali, or special places such as power plants, machine rooms, warehouses and the like which are easily subjected to static electricity generation. The single function of the traditional rubber floor limits the wide application of the traditional rubber floor.
Disclosure of Invention
The invention provides a multifunctional rubber material and a preparation method and application thereof, and solves the problem of single function of the traditional rubber floor.
The specific technical scheme is as follows:
the invention provides a multifunctional rubber material which is characterized by being prepared from the following components in parts by weight:
40-80 parts of styrene butadiene rubber;
20-60 parts of ethylene propylene diene monomer;
10-30 parts of high styrene resin;
10-30 parts of chlorosulfonated polyethylene;
1-10 parts of carbon nanotubes;
25-100 parts of a flame retardant;
1-5 parts of polyethylene glycol;
1-5 parts of a dispersing agent;
1-5 parts of a coupling agent;
20-50 parts of white carbon black;
15-60 parts of a filler;
60-120 parts of kaolin;
4-10 parts of white mineral oil;
2-8 parts of an active agent;
1-5 parts of an anti-aging agent;
1-4 parts of a vulcanizing agent;
0-3 parts of an accelerator;
1-10 parts of an antibacterial agent;
3-15 parts of an antistatic agent;
0-2 parts of pigment;
0-8 parts of other additives.
The multifunctional rubber material provided by the invention has multiple functions of acid and alkali, antibiosis, static resistance, puncture resistance and the like, has the characteristics of flame retardance, wear resistance, skid resistance, moisture resistance, easiness in cleaning and maintenance and the like, can adapt to harsh and complex environmental places, and widens the application of the rubber material.
In the invention, the styrene-butadiene rubber is preferably styrene-butadiene rubber SBR1502, and the styrene-butadiene rubber accounts for 40-80 parts by mass, and preferably 60 parts by mass.
In the invention, the ethylene propylene diene monomer rubber has excellent ozone resistance, heat resistance, weather resistance and other aging resistance, the ethylene propylene diene monomer rubber is preferably ethylene propylene diene monomer rubber EPDM 4770R, and the ethylene propylene diene monomer rubber is 20-60 parts by mass, preferably 35 parts by mass;
the chlorosulfonated polyethylene has excellent ozone resistance, atmospheric aging resistance, chemical corrosion resistance and the like, and has better physical and mechanical properties, aging resistance, heat resistance, low temperature resistance, oil resistance, flame resistance, wear resistance and electric insulation resistance. The chlorosulfonated polyethylene is preferably chlorosulfonated polyethylene CSM4008, and the chlorosulfonated polyethylene is 10-30 parts by mass, and preferably 20 parts by mass;
the invention finds that the ternary propylene rubber and chlorosulfonated polyethylene combination has a synergistic effect on the acid and alkali resistance of the multifunctional rubber material, and experimental data shows that the acid and alkali resistance of the ternary propylene rubber and the chlorosulfonated polyethylene combination is better than that of the ternary propylene rubber alone or the chlorosulfonated polyethylene alone, and particularly, when 20-60 parts of ternary propylene rubber and 10-30 parts of chlorosulfonated polyethylene are combined, the acid and alkali resistance is more obvious.
The carbon nano tube is carbon powder which is much smaller than dust, has a molecular structure, is not rotten, has strong heat conduction and strong tension, has the strength of 100 times that of steel and the mass of 1/6 times that of the steel, has excellent electrostatic conduction performance, and has the electrical conductivity of 1000 times that of the steel. The characteristics of high strength and good conductivity of the carbon nano tube are utilized in the application, and higher antistatic and anti-puncture performance is obtained for the composition. In the invention, the carbon nanotube is preferably carbon nanotube CNT201, and the carbon nanotube accounts for 1-10 parts by weight, preferably 3 parts by weight;
the antistatic agent is preferably an antistatic agent avan STATIC SBR/EPDM, and the antistatic agent accounts for 3-15 parts by weight, preferably 8 parts by weight;
the invention discovers that the carbon nano tube and the antistatic agent have a synergistic effect on the conductivity of the multifunctional rubber material. From experimental data, the antistatic performance of the multifunctional rubber material by using the carbon nano tube and the antistatic agent in combination can be more remarkable than that of the antistatic agent alone or the carbon nano tube alone or the mixture of the antistatic agent and the carbon fiber.
In the invention, the high styrene resin has good impact resistance, can improve the bending resistance and the tearing strength of a sizing material, and is preferably high styrene resin HS-85, and the high styrene resin is 10-30 parts by weight, preferably 15 parts by weight;
20-50 parts of white carbon black, preferably 30 parts of white carbon black,
the invention discovers that the combination of the three components of the carbon high styrene resin, the carbon nano tube and the white carbon black can synergistically enhance the puncture resistance and the tear resistance of the multifunctional rubber material, and the effect of the combination of the carbon high styrene resin, the carbon nano tube and the white carbon black is more obvious, wherein the puncture resistance and the tear resistance of the multifunctional rubber material are higher, or the combination of the carbon nano tube and the white carbon black is more obvious, or the combination of the carbon fiber, the rubber matrix and the white carbon black.
In the present invention, the flame retardant includes: 10-40 parts of aluminum hydroxide, 5-30 parts of zinc borate and 10-30 parts of flame retardant FR-919, preferably 30 parts of aluminum hydroxide, 10 parts of zinc borate and 20 parts of flame retardant FR-919;
the filler comprises: 5-20 parts of barium sulfate and 10-30 parts of nano calcium carbonate, preferably 10 parts of barium sulfate and 20 parts of nano calcium carbonate.
The accelerator comprises 0-3 parts by weight of accelerator DM and 1.2 parts by weight of accelerator CBS, preferably 0.8 part by weight of accelerator DM and 1.2 parts by weight of accelerator CBS; the invention uses the accelerator DM and the accelerator CBS in a matching way, which can effectively shorten the vulcanization time and reduce the vulcanization temperature.
The activating agent is zinc oxide and stearic acid, and the activating agent is 2-8 parts by weight, preferably 1-5 parts by weight of zinc oxide and 1-3 parts by weight of stearic acid, and more preferably 4 parts by weight of zinc oxide and 2 parts by weight of stearic acid; the zinc oxide and the stearic acid are used together, so that the accelerating effect can be fully exerted, and the using amount of the accelerator is reduced or the vulcanizing time is shortened.
The anti-aging agent comprises 1-5 parts of anti-aging agent SPC and 11018 parts of microcrystalline wax, preferably 1.5 parts of anti-aging agent SPC and 1.5 parts of microcrystalline wax 11018;
the antibacterial agent is an inorganic silver ion antibacterial agent P203, and is 1-10 parts by weight, preferably 3.0 parts by weight;
the pigment is
0068MCN, wherein the pigment accounts for 0-2 parts by weight, preferably 0.5 part by weight;
the other auxiliary agents are pentaerythritol and magnesium oxide, the magnesium oxide is preferably magnesium oxide 150, the pentaerythritol is 1-3 parts by weight, the magnesium oxide is preferably 1.5 parts by weight, and the magnesium oxide 150 is 2-5 parts by weight, and the magnesium oxide is preferably 3.0 parts by weight;
the vulcanizing agents comprise sulfur and a vulcanizing agent TRA, wherein the sulfur is 1-3 parts by weight, preferably 2.2 parts by weight, and the vulcanizing agent TRA is 0-2 parts by weight, preferably 1.0 part by weight;
the dispersing agent is dispersing agent FC-303, 1-5 parts of dispersing agent, preferably 2 parts, 1-5 parts of polyethylene glycol, the molecular weight of the polyethylene glycol is 4000, preferably 3 parts, 4-10 parts of white mineral oil, preferably 5 parts, the coupling agent is preferably silane coupling agent, and 1-5 parts of coupling agent, preferably 3 parts.
The invention also provides a preparation method of the multifunctional rubber material, which comprises the following steps:
1): mixing styrene-butadiene rubber, ethylene propylene diene monomer, high styrene resin, chlorosulfonated polyethylene, carbon nano tubes and a coupling agent, and pressing a top bolt to mix for 120-150 s;
2) then adding zinc oxide, stearic acid, an anti-aging agent, polyethylene glycol, a dispersing agent, a flame retardant, 1/2 mass kaolin, a filler, an antibacterial agent, an antistatic agent, a pigment and other auxiliaries, mixing for 180-240 s by pressing a top bolt;
3) then adding 1/2 mass of kaolin and white mineral oil, pressing a top bolt to mix for 120-180 s;
4) lifting the top plug to clean, pressing the top plug to continue mixing for 120-180 s, and discharging rubber to obtain mixed rubber;
5) mixing the mixed sizing material, a vulcanizing agent and an accelerator in an open mill, and then thinly passing for 4-6 times, wherein the roller distance is 1-2 mm, and the time is 3-5 min;
6) rolling on an open mill for 6 times, wrapping rollers, and then discharging sheets, wherein the roller spacing is 6-8 mm, and the time is 3-5 min;
7) and (3) molding and vulcanizing the rubber material obtained in the step 6) to obtain the multifunctional rubber material.
Because the carbon nano tube has low dispersity in the polymer, the invention pre-disperses the carbon nano tube in the initial mixing stage, namely, the carbon nano tube silane coupling agent and the rubber are put into an internal mixer together for mixing, so that the carbon nano tube and the silane coupling agent (the molecular formula is Y-R-Si (OR))3) The Y-organic functional group generates a binding reaction, and under the action of a silane coupling agent, a molecular bridge is erected between the interfaces of the carbon nano tube and the rubber organic substance, two materials with different properties are connected together, so that the performance of the materials is improved, the bonding strength is increased, the dispersity of the carbon nano tube in the rubber matrix is fully improved, the carbon nano tube is prevented from being gathered into bundles or wound, and the performance of the multifunctional rubber floor composition is obtained.
The invention also provides application of the multifunctional rubber material in preparation of rubber floors.
According to the technical scheme, the invention has the following advantages:
the invention provides a multifunctional rubber material which has multiple functions of acid-base, antibiosis, static resistance, puncture resistance and the like, and has the characteristics of flame retardance, wear resistance, skid resistance, moisture resistance, easiness in cleaning and maintenance and the like. In the preparation raw materials of the multifunctional rubber material, the ethylene propylene diene monomer and the styrene butadiene rubber have a synergistic effect on the acid and alkali resistance of the multifunctional rubber material, the carbon nano tube and the antistatic agent have a synergistic effect on the conductivity of the multifunctional rubber material, and the combination of the carbon high styrene resin, the carbon nano tube and the white carbon black can synergistically enhance the puncture resistance and the tear resistance of the multifunctional rubber material. The multifunctional rubber material provided by the invention can adapt to harsh and complex environmental places, and the application of the rubber material is widened.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, styrene butadiene rubber SBR1502 is styrene butadiene rubber, ethylene propylene diene monomer EPDM 4770R is ethylene propylene diene monomer EPDM 4770R, high styrene resin HS-85, chlorosulfonated polyethylene CSM4008, carbon nano tubes CNT201, polyethylene glycol PEG4000, flame retardant FR-919, dispersant FC-303 and pigment are used respectively
0068MCN。
Carbon fibers were purchased from taiwan taili, model: TC33, fiber diameter: 7 μm, length: 6-12 mm;
carbon nanotubes were purchased from huashuo nanomaterials, inc, model: CNT201 has a diameter of 1 to 3nm and a length of 10 to 50 μm.
In the examples of the present invention, each reagent was commercially available.
Example 1
This example is the preparation of a multifunctional rubber floor
Raw materials: 60 parts of styrene-butadiene rubber, 35 parts of ethylene propylene diene monomer, 15 parts of high styrene resin, 20 parts of chlorosulfonated polyethylene, 3 parts of carbon nano tubes, 30 parts of aluminum hydroxide, 10 parts of zinc borate, 20 parts of flame retardant, 3 parts of polyethylene glycol, 2 parts of dispersant, 3 parts of silane coupling agent Si69N 3, 30 parts of white carbon black, 10 parts of barium sulfate, 80 parts of kaolin, 20 parts of nano calcium carbonate, 5 parts of white mineral oil, 4 parts of zinc oxide, 2 parts of stearic acid, 3 parts of anti-aging agent (anti-aging agent SPC is 1.5 parts and 1.5 parts of microcrystalline wax 11018), 3.2 parts of vulcanizing agent (2.2 parts of sulfur and 1.0 part of vulcanizing agent TRA), 2 parts of accelerator (0.8 parts of accelerator DM and 1.2 parts of accelerator CBS), 3 parts of antibacterial agent, 8 parts of antistatic agent, 0.5 parts of pigment and other auxiliaries (1.5 parts of pentaerythritol and 1503 parts of magnesium oxide).
The preparation method comprises the following specific steps:
(1) before the production of the rubber floor composition, 2 parts of special washing machine glue is used for cleaning the internal mixer, and the machine is cleaned to prevent the floor glue material from being polluted;
(2) weighing styrene butadiene rubber 1502, ethylene propylene diene monomer EPDM 4770R, high styrene resin HS-85, chlorosulfonated polyethylene CSM4008, carbon nano tube CNT201 and silane coupling agent Si69N, firstly putting the materials into a 75L internal mixer for mixing, and pressing a top bolt for 150 s;
(3) then adding zinc oxide, stearic acid, an anti-aging agent, polyethylene glycol PEG4000, a dispersing agent FC-303, aluminum hydroxide, zinc borate, a flame retardant FR-919, barium sulfate, nano calcium carbonate, an inorganic silver ion antibacterial agent P203, an antistatic agent avanstattic SBR/EPDM, a pigment and other auxiliary agents, white carbon black and 1/2 kaolin, and pressing a top bolt for 240 s;
(4) then adding the rest 1/2 kaolin and white mineral oil, and pressing a top bolt for 180 s;
(5) lifting the top bolt for cleaning, pressing the top bolt for mixing, and pressing the top bolt for 150 s;
(6) and rubber discharging is carried out at the temperature of 150-155 ℃, and the total banburying and mixing time is controlled to be about 12 min.
(7) Adding a vulcanizing agent and an accelerator into the mixed rubber material obtained in the step (6) on an open mill, and then thinly passing for 6 times with the roller spacing of 2mm for 3 min;
(8) rolling on an open mill for 6 times, wrapping rollers, and then discharging sheets, wherein the roller spacing is 6mm, and the time is 3 min;
(9) carrying out sheet discharging and cooling on the rubber material obtained in the step (8) to obtain rubber material;
(10) and (4) carrying out forming vulcanization on the rubber material obtained in the step (9) to obtain the multifunctional rubber floor.
Example 2
This example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: 40 parts of styrene butadiene rubber and 20 parts of ethylene propylene diene monomer.
Example 3
This example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: 80 parts of styrene butadiene rubber and 60 parts of ethylene propylene diene monomer.
Comparative example 1
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: no chlorosulfonated polyethylene was included.
Comparative example 2
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: 50 parts of chlorosulfonated polyethylene.
Comparative example 3
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: no ethylene propylene diene monomer is contained.
Comparative example 4
This comparative example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: 55 parts of ethylene propylene diene monomer rubber without chlorosulfonated polyethylene.
Comparative example 5
This comparative example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: 55 parts of chlorosulfonated polyethylene and no ethylene propylene diene monomer.
Comparative example 6
This example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: chlorosulfonated polyethylene was replaced with chlorinated polyvinyl chloride in equal amounts.
Comparative example 7
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: does not contain carbon nano-tube and antistatic agent.
Comparative example 8
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: contains no antistatic agent.
Comparative example 9
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: the antistatic agent is changed from 8 parts to 20 parts.
Comparative example 10
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: no carbon nanotubes are present.
Comparative example 11
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: carbon fibers are used instead of carbon nanotubes.
Comparative example 12
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: does not contain high styrene resin and carbon nano tubes.
Comparative example 13
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: does not contain a high styrene resin.
Comparative example 14
This example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: the white carbon black is changed from 30 parts to 60 parts, and the rest parts are unchanged.
Comparative example 15
This example is the preparation of a multifunctional rubber floor
This example differs from example 1 in that: the paint does not contain high styrene resin, the carbon nano tube is changed from 3 parts to 8 parts, and the white carbon black is changed from 30 parts to 40 parts.
Comparative example 16
Comparative example preparation of rubber floor
This comparative example differs from example 1 in that: contains no antibacterial agent.
Test example 1
1. The rubber floors obtained in examples 1 to 3 and comparative examples 1 to 6 were respectively immersed in sulfuric acid (vol./vol., 20%), hydrochloric acid (vol./vol., 15%), and sodium hydroxide (vol./vol., 10%) at 23 ℃ for 72 hours to measure their aging coefficients (in terms of tensile product), and the results are shown in table 1.
The results in Table 1 show that the rubber floors prepared in examples 1-3 and comparative examples 1-6 have acid-base resistance and aging resistance coefficients of not less than 0.80 (meeting the standard requirements of GB/T3951-2002 flame retardant rubber floors for ships), and the rubber floor in example 1 has the highest sulfuric acid resistance, hydrochloric acid resistance and sodium hydroxide resistance and aging resistance coefficients, which indicates that the sample has the best acid-base resistance effect.
The data of the examples 1 to 3 and the comparative examples 3 to 5 show that the acid and alkali resistance is better than that of the single ternary propylene rubber and the single chlorosulfonated polyethylene, and the acid and alkali resistance of the multifunctional rubber floor of the example 1 is more obvious than that of the single ternary propylene rubber and the single chlorosulfonated polyethylene under the condition that the total amount of the raw materials of the multifunctional rubber floor is not changed; as can be seen from comparative example 6, when chlorosulfonated polyethylene was equivalently replaced with chlorinated polyvinyl chloride, the acid and alkali resistance of the multifunctional rubber flooring was also correspondingly weakened. From the above results, it can be seen that the two components of the terpolymer EP rubber and the chlorosulfonated polyethylene have synergistic effects on acid and alkali resistance, and when 35 parts of the terpolymer EP rubber/20 parts of the chlorosulfonated polyethylene
When being proportioned, the acid and alkali resistant effect is obvious.
TABLE 1
| Sulfuric acid resistance | Hydrochloric acid resistance | Sodium hydroxide resistance | |
| Example 1 | 0.93 | 0.91 | 0.92 |
| Example 2 | 0.84 | 0.85 | 0.87 |
| Example 3 | 0.91 | 0.88 | 0.89 |
| Comparative example 1 | 0.86 | 0.83 | 0.80 |
| Comparative example 2 | 0.87 | 0.88 | 0.91 |
| Comparative example 3 | 0.84 | 0.84 | 0.88 |
| Comparative example 4 | 0.89 | 0.86 | 0.81 |
| Comparative example 5 | 0.82 | 0.83 | 0.89 |
| Comparative example 6 | 0.86 | 0.81 | 0.79 |
2. The results of resistance tests conducted on examples 1 to 3 and comparative examples 7 to 11 are shown in Table 2.
As can be seen from the results in Table 2, the rubber floors prepared in examples 1 to 3 and comparative examples 7 to 11 all satisfy the standard of GB 50174-2008 electronic information system computer room design Specification that the floor surface resistance of the main computer room and the auxiliary area should be 2.5 × 104～1.0×109The multifunctional rubber floor is required to be in the range of omega, but the raw materials of the multifunctional rubber floor do not contain carbon nano tubes, antistatic agents or contain too much antistatic agents, or carbon fibers are adopted to replace the carbon nano tubes, and the surface resistance of the prepared multifunctional rubber floor is higher than that of the multifunctional rubber floors in the embodiments 1-3. The multifunctional rubber floor of example 1 has the best antistatic effect.
From the data analysis of examples 1 to 3 and comparative examples 7 to 11, it can be seen that the carbon nanotubes and the antistatic agent have a synergistic effect on the conductivity, and the antistatic property is more remarkable than that of the antistatic agent alone, or the carbon nanotubes alone, or the mixture of the antistatic agent and the carbon fibers.
TABLE 2
| Resistance (RC) | |
| Example 1 | 5.0×105Ω |
| Example 2 | 4.9×105Ω |
| Example 3 | 2.2×106Ω |
| Comparative example 7 | 2.5×1010Ω |
| Comparative example 8 | 1.8×107Ω |
| Comparative example 9 | 3.3×103Ω |
| Comparative example 10 | 3.2×106Ω |
| Comparison ofExample 11 | 2.1×107Ω |
3. The rubber floors prepared in examples 1 to 3 and comparative examples 10 to 15 were subjected to a puncture resistance test (a test method for simulating the puncture resistance of footwear) according to the national standard GB/T20991-2007 test method for individual protection device shoes, and the results are shown in Table 3, and the tear strength was measured according to GB/T529-.
From the results in Table 3, it can be seen that only the multifunctional rubber floors of examples 1 to 3 meet the performance requirement that the puncture force is not less than 1100N in GB21147-2007 protective shoes for individual protection devices of the national standard.
From the results in table 3, it can be seen that the raw materials of the multifunctional rubber floor lack the high styrene resin and/or the carbon nanotubes, the amount of the white carbon black is increased, or the multifunctional rubber floor made of the multifunctional rubber floor lacks the high styrene resin under the condition that the total amount of the high styrene resin, the carbon nanotubes and the white carbon black is not changed, the tear strength of the multifunctional rubber floor made of the multifunctional rubber floor is lower than that of the multifunctional rubber floors of examples 1 to 3, and the difference is significant.
Experiments prove that the combination of the high styrene resin, the carbon nanotube and the white carbon black can synergistically enhance the puncture resistance and the tear resistance of the rubber floor, and the effect of the combination of the styrene resin and the white carbon black, or the combination of the carbon nanotube and the white carbon black, or the combination of the carbon fiber and the white carbon black is more remarkable. Therefore, under the condition of meeting relatively sharp objects (such as high-heeled shoes and iron wheels with poor rolling), the rubber floor provided by the invention cannot be torn or pierced.
TABLE 3
| Puncture resistance | Tear strength | |
| Example 1 | 1286N | 58.1kN/m |
| Example 2 | 1093N | 50.7kN/m |
| Example 3 | 1181N | 55.6kN/m |
| Comparative example 10 | 1025N | 46.8kN/m |
| Comparative example 11 | 1080N | 50.5kN/m |
| Comparative example 12 | 861N | 36.2kN/m |
| Comparative example 13 | 1006N | 48.9kN/m |
| Comparative example 14 | 1049N | 50.7kN/m |
| Comparative example 15 | 1109N | 52.3kN/m |
4. The rubber floors prepared in examples 1 to 3 and comparative example 10 were subjected to an antibacterial performance test according to the method specified in appendix A of QB/T2591 and 2003 antibacterial plastics and antibacterial effect, and the test results are shown in Table 2.
As can be seen from Table 4, the rubber floorings obtained in examples 1 to 3 had excellent antibacterial ability.
TABLE 4
| Residual bacteria amount of rubber floor | Antibacterial rate | |
| Example 1 | 2.1×104cfu | 95.8％ |
| Example 2 | 2.2×104cfu | 95.7％ |
| Example 3 | 2.5×104cfu | 95.1％ |
| Comparative example 16 | 4.4×105cfu | 12.9％ |
5. The multifunctional rubber floorings manufactured in examples 1 to 3, comparative examples 4 to 6, comparative example 9 and comparative examples 14 to 15 were tested for hardness, elongation, tensile strength and abrasion loss, and the results are shown in Table 5.
As can be seen from Table 5, the multi-functional rubber floorings of examples 1 to 3 have excellent tensile properties, mechanical strength and wear resistance compared to the multi-functional rubber floorings of comparative examples 6, 9 and 14 to 15, and the multi-functional rubber floorings of comparative examples 4 to 5 have less difference in properties from example 1.
TABLE 5
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The multifunctional rubber material is characterized by being prepared from the following components in parts by weight:
40-80 parts of styrene butadiene rubber;
20-60 parts of ethylene propylene diene monomer;
10-30 parts of high styrene resin;
10-30 parts of chlorosulfonated polyethylene;
1-10 parts of carbon nanotubes;
25-100 parts of a flame retardant;
1-5 parts of polyethylene glycol;
1-5 parts of a dispersing agent;
1-5 parts of a coupling agent;
20-50 parts of white carbon black;
15-60 parts of a filler;
60-120 parts of kaolin;
4-10 parts of white mineral oil;
2-8 parts of an active agent;
1-5 parts of an anti-aging agent;
1-4 parts of a vulcanizing agent;
0-3 parts of an accelerator;
1-10 parts of an antibacterial agent;
3-15 parts of an antistatic agent;
0-2 parts of pigment;
0-8 parts of other additives.
2. The multifunctional rubber material according to claim 1, wherein the flame retardant comprises: 10-40 parts of aluminum hydroxide, 5-30 parts of zinc borate and 10-30 parts of flame retardant FR-919.
3. The multifunctional rubber material according to claim 1, wherein the filler comprises: 5-20 parts of barium sulfate and 10-30 parts of nano calcium carbonate.
4. The multifunctional rubber material according to claim 1, wherein the vulcanizing agent is 1 to 3 parts of sulfur and 0 to 2 parts of vulcanizing agent TRA.
5. The multifunctional rubber material of claim 1, wherein the accelerators are accelerator DM and accelerator CBS.
6. The multifunctional rubber material according to claim 1, wherein the antioxidant is 1.5 parts of antioxidant SPC and 1.5 parts of microcrystalline wax;
the antibacterial agent is an inorganic silver ion antibacterial agent P203.
7. The multifunctional rubber material according to claim 1, wherein the other auxiliary agents are pentaerythritol and magnesium oxide.
8. The multifunctional rubber material according to claim 1, wherein the molecular weight of the polyethylene glycol is 4000.
9. The method for preparing a multifunctional rubber material according to any one of claims 1 to 8, comprising the steps of:
1): mixing styrene-butadiene rubber, ethylene propylene diene monomer, high styrene resin, chlorosulfonated polyethylene, carbon nano tubes and a coupling agent, and pressing a top bolt to mix for 120-150 s;
2) then adding an active agent, an anti-aging agent, polyethylene glycol, a dispersing agent, a flame retardant, 1/2 mass kaolin, a filler, an antibacterial agent, an antistatic agent, a pigment and other auxiliary agents, mixing, pressing a top bolt, and mixing for 180-240 s;
3) then adding 1/2 mass of kaolin and white mineral oil, pressing a top bolt to mix for 120-180 s;
4) lifting the top plug to clean, pressing the top plug to continue mixing for 120-180 s, and discharging rubber to obtain mixed rubber;
5) mixing the mixed sizing material, a vulcanizing agent and an accelerator in an open mill, and then thinly passing for 4-6 times, wherein the roller distance is 1-2 mm, and the time is 3-5 min;
6) rolling on an open mill for 6 times, wrapping rollers, and then discharging sheets, wherein the roller spacing is 6-8 mm, and the time is 3-5 min;
7) and (3) molding and vulcanizing the rubber material obtained in the step 6) to obtain the multifunctional rubber material.
10. Use of the multifunctional rubber material of any one of claims 1 to 8 for the preparation of rubber flooring.
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