CN113248837A - Heat-resistant rubber plate rubber compound and preparation method and application thereof - Google Patents
Heat-resistant rubber plate rubber compound and preparation method and application thereof Download PDFInfo
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- CN113248837A CN113248837A CN202110601958.6A CN202110601958A CN113248837A CN 113248837 A CN113248837 A CN 113248837A CN 202110601958 A CN202110601958 A CN 202110601958A CN 113248837 A CN113248837 A CN 113248837A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 128
- 150000001875 compounds Chemical class 0.000 title claims description 25
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 53
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 38
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- 239000011256 inorganic filler Substances 0.000 claims abstract description 11
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims description 17
- 239000006229 carbon black Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 9
- 235000021355 Stearic acid Nutrition 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000008117 stearic acid Substances 0.000 claims description 8
- 239000003431 cross linking reagent Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 description 11
- 238000010030 laminating Methods 0.000 description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 6
- 239000005977 Ethylene Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000012190 activator Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- JSTCPNFNKICNNO-UHFFFAOYSA-N 4-nitrosophenol Chemical compound OC1=CC=C(N=O)C=C1 JSTCPNFNKICNNO-UHFFFAOYSA-N 0.000 description 1
- 229940126062 Compound A Drugs 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- -1 calcined argil Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a heat-resistant rubber plate gross rubber and a preparation method and application thereof, which are applied to the technical field of heat-resistant rubber material preparation, wherein the heat-resistant rubber plate gross rubber comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer, 5-8 parts of paraffin oil, 20-40 parts of inorganic filler, 5-10 parts of zinc oxide, 5-10 parts of magnesium oxide, 6-9 parts of anti-aging agent and 4-6 parts of bis 25 vulcanizing agent.
Description
Technical Field
The invention is applied to the technical field of heat-resistant rubber material preparation, and particularly relates to a heat-resistant rubber plate compound.
Background
The solar laminating machine is used for laminating and packaging a solar cell panel, wherein an important main part of the solar cell panel formed by pressing of the laminating machine is a high-temperature-resistant rubber plate, the high-temperature-resistant rubber plate plays roles in sealing and vacuumizing and high-temperature curing of EVA (ethylene vinyl acetate) sealant in the solar laminating machine, and the high-temperature resistance, the ageing resistance and the telescopic ductility of the rubber plate directly determine the production efficiency, the product quality and the service life of the solar laminating machine.
The prior Chinese patent publication No. CN 112280135A discloses a durable rubber plate for a photovoltaic laminating machine and a preparation method thereof, which comprises the following components in parts by mass: 100 parts of a rubber matrix, 20-40 parts of a reinforcing filler, 5-10 parts of a vulcanizing agent, 1-6 parts of a vulcanizing assistant and 1-5 parts of an anti-aging agent; wherein the rubber matrix comprises hydrogenated nitrile rubber, fluororubber and ethylene propylene diene monomer; this durability rubber slab high temperature resistance for photovoltaic laminator still treats the improvement, when its long-time when using under the condition of high temperature, can appear ageing in advance, lose the elasticity of rubber and the phenomenon of leakproofness to shorten the life of rubber slab, then need dismantle the change to the rubber slab many times using the laminator, it is comparatively troublesome when dismantling, reinforcing workman's intensity of labour, and influence the normal production of laminator simultaneously, reduce the production efficiency of laminator.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a rubber composition for a heat-resistant rubber sheet, the heat-resistant rubber sheet being prepared from the rubber composition for a heat-resistant rubber sheet, thereby solving the above-mentioned problem of low heat resistance.
The invention provides a heat-resistant rubber plate gross rubber which comprises the following components in parts by weight: the paint comprises the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 5-8 parts of paraffin oil, 5-10 parts of zinc oxide, 5-10 parts of magnesium oxide and 4-6 parts of bis-25 vulcanizing agent, and is characterized by further comprising 20-40 parts of inorganic filler, 6-9 parts of anti-aging agent and 1.5-3.5 parts of auxiliary crosslinking agent, wherein the anti-aging agent is 445 anti-aging agent, MMB/MB anti-aging agent and RD anti-aging agent, and the proportion of the 445 anti-aging agent, the MMB/MB anti-aging agent and the RD anti-aging agent is 3: 1.5: 3.
further, the feed also comprises the following components in parts by mass: 20 to 30 parts of fine carbon black and 20 to 40 parts of coarse carbon black.
Further, the feed also comprises the following components in parts by mass: 0.5 to 1.0 portion of stearic acid.
Further, the ethylene propylene diene monomer is composed of ethylene propylene diene monomer 6470 and ethylene propylene diene monomer 4045, wherein the ethylene propylene diene monomer 6470 comprises the following components in parts by weight: 60 to 70 portions.
The invention provides a rubber compound for a heat-resistant rubber plate, which is prepared by adding 5-10 parts of inorganic filler and 6-9 parts of anti-aging agent, wherein the three anti-aging agents are 445 anti-aging agent, MMB (MB) anti-aging agent and RD anti-aging agent respectively, and the proportion of the 445 anti-aging agent, the MMB/MB anti-aging agent and the RD anti-aging agent is 3: 1.5: 3, the heat resistance of the rubber material is greatly improved, the service life of the rubber material is prolonged, and the production cost can be reduced at the same time by mutually matching and using the high-temperature-resistant reinforcing inorganic filler and the high-temperature-resistant anti-aging agent;
the heat resistance of the ethylene propylene diene monomer is the best when the bis-25 vulcanizing agent is used as the vulcanizing agent, and the auxiliary crosslinking agent TMPTMA (trimethylolpropane trimethacrylate) of peroxide is reasonably matched to further ensure the stability and the improvement of the heat resistance of the rubber material;
by selecting the ethylene propylene diene monomer 6470 with medium and low Mooney viscosity, medium and low ethylene content and the ethylene propylene diene monomer 4045 with low Mooney viscosity, medium ethylene and medium ENB for mutual matching, the heat resistance of the rubber material is improved, and the balance and improvement of the extrusion process performance, the tearing performance and the physical performance of the rubber material are ensured.
The invention also provides a preparation method of the heat-resistant rubber plate rubber compound, which comprises the following steps:
s1: a material mixing step: sequentially adding ethylene propylene diene monomer, zinc oxide, magnesium oxide and an anti-aging agent into an internal mixer, and stirring for 40-60s under the conditions that the rotating speed of the internal mixer is controlled at 40-50r/min and the mixing pressure is controlled at 5.0-6.0KGf to obtain a mixed material A;
adding paraffin oil and inorganic filler into the obtained mixed material A, continuously stirring by using an internal mixer, and stirring for 40-90 s under the conditions that the rotating speed of the internal mixer is controlled at 40-50r/min and the mixing pressure is controlled at 5.0-6.0KGf to obtain rubber A;
s2: first glue discharging: lifting and cleaning the A rubber obtained in S1, and pressing and discharging rubber;
s3: and (3) a vulcanization step: cooling the A rubber compound discharged from S2, standing for at least 24 hours, adding the A rubber compound into an internal mixer, adding a double 25 vulcanizing agent and an auxiliary crosslinking agent, stirring by the internal mixer, and stirring for 40-60S under the conditions that the rotation speed of the internal mixer is controlled to be 20-30 r/min and the mixing pressure is controlled to be 3.5-4.5 KGf to obtain B rubber compound;
s4: and (3) second glue discharging: and cleaning the B rubber obtained in the step S3, pressing and discharging the B rubber, cooling the discharged B rubber, standing for at least 24 hours, and finally obtaining the heat-resistant rubber plate rubber compound.
Further, 0.5-1.0 part of stearic acid is added in the process of mixing the mixed material A in S1, and 20-30 parts of fine carbon black and 20-40 parts of coarse carbon black are added in the process of adding the processed mixed material A into an internal mixer for mixing to obtain the rubber compound A.
The invention also provides a preparation method of the heat-resistant rubber plate rubber compound, which has the advantages of simple process and convenient operation, is convenient for stirring the raw materials under the process parameters set by the internal mixer, ensures that the raw materials are mixed more uniformly, is convenient for cleaning and discharging the mixed rubber material, and is not easy to stick to a roller in the rubber discharging process.
The invention also provides a heat-resistant rubber plate which is formed by pressing the rubber compound formed by the preparation method.
The invention also provides a heat-resistant rubber plate which is prepared from the rubber compound for the heat-resistant rubber plate, has high heat resistance, hardness and tearing strength, and has high qualification rate, good process performance and long service life.
The invention also provides a solar panel forming machine which comprises the heat-resistant rubber plate.
The invention also provides a solar panel forming machine which comprises the heat-resistant rubber plate, and the heat-resistant rubber plate is applied to the solar panel forming machine, so that the heat-resistant rubber plate has higher heat resistance, and the solar panel forming machine is not easy to damage when working at high temperature for a long time, thereby prolonging the service life of the solar panel forming machine, reducing the replacement times of workers on the heat-resistant rubber plate, reducing the working strength of the workers and improving the production efficiency of the solar panel forming machine.
Detailed Description
Example 1:
the rubber compound for the heat-resistant rubber plate comprises the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 6.5 parts of paraffin oil, 30 parts of inorganic filler, 7.5 parts of zinc oxide, 7.5 parts of magnesium oxide, 7.5 parts of anti-aging agent, 5 parts of bis-25 vulcanizing agent, 2.5 parts of auxiliary crosslinking agent, 25 parts of fine carbon black, 30 parts of coarse carbon black and 0.8 part of stearic acid;
the inorganic filler is high-temperature-resistant silicate substances, such as calcined argil, calcium silicate and the like; the anti-aging agent adopts three anti-aging agents which are 445 anti-aging agent, MMB (MB) anti-aging agent and RD anti-aging agent respectively, wherein the proportion of the 445 anti-aging agent, the MMB/MB anti-aging agent and the RD anti-aging agent is 3: 1.5: 3, the heat resistance of the rubber material is greatly improved, the service life of the rubber material is prolonged, and the production cost can be reduced at the same time by mutually matching and using the high-temperature-resistant reinforcing inorganic filler and the high-temperature-resistant anti-aging agent;
the ethylene propylene diene monomer has the best heat resistance by taking the bis-25 vulcanizing agent as the vulcanizing agent, by-products and strong pungent smell are not easily generated in the vulcanizing process, the bond energy of generated carbon-carbon bonds is the largest and far higher and better than those of a sulfur vulcanizing system, a low-sulfur high-promotion system, a resin system, a quinone oxime system and other vulcanizing systems, and 2.5 parts of auxiliary crosslinking agent TMPTMA (trimethylolpropane trimethacrylate) is matched to further ensure the stability and the improvement of the heat resistance of the rubber material.
The paraffin oil adopts paraffin oil with high flash point and high viscosity, the paraffin oil with an opening flash point reaching more than 280 ℃ is taken as a process operation aid, the mixing and extrusion process operation of the rubber material is convenient, the paraffin oil is not suitable to be added too much, the heat-resistant aging performance of the rubber material can be reduced by more than 10 parts of paraffin oil, the paraffin oil can gradually volatilize and be dried under the condition of high temperature for a long time, the hardness change of the rubber material is large at the moment and exceeds the standard, and the phenomenon of hardness hardening of the rubber material occurs;
the zinc oxide comprises direct zinc oxide and indirect zinc oxide, wherein the indirect zinc oxide is selected, is a metal oxide, is white hexagonal crystal or powder at normal temperature, has the particle size of about 0.1-10 microns, and has the purity of 99.5-99.7 percent; the light magnesium oxide is selected as the magnesium oxide, and the indirect zinc oxide and the light magnesium oxide are used together to play a role of an activator, so that the heat conductivity of the rubber material is improved, the vulcanization speed is accelerated, the vulcanization is more thorough, and the heat resistance, the good corrosion resistance, the tear resistance, the elasticity and the elongation of the rubber material can be improved;
the fine carbon black adopts N330, the coarse carbon black adopts N550 (or N774), and the specific reinforcing fine carbon black and the specific reinforcing coarse carbon black are added to play a role in coloring, so that the rubber material can be balanced in physical and mechanical properties, resilience, deflection, compression and the like;
stearic acid is used as an activator, and is matched with indirect zinc oxide for use, so that the reactivity of the rubber material is improved, and the rubber material is convenient to demould in the subsequent process, wherein the activator stearic acid is preferably not more than 1 part, and more than one vulcanizing agent can influence the vulcanizing speed of the rubber material and consume part of peroxide.
In a further optimized embodiment, the ethylene propylene diene monomer is composed of 65 parts of ethylene propylene diene monomer 6470 and 35 parts of ethylene propylene diene monomer 4045, wherein the Mooney viscosity ML (1+4@125 ℃) of the ethylene propylene diene monomer 6470 is as follows: 59, the ethylene content is: 70 WT%, ENB 4.7%, Mooney viscosity ML (1+4) @ 100 ℃ of ethylene-propylene-diene monomer 4045: 45, ethylene content: 45 wt% and ENB 7.6%;
by selecting the ethylene propylene diene monomer 6470 with medium and low Mooney viscosity, medium and low ethylene content and the ethylene propylene diene monomer 4045 with low Mooney viscosity, medium ethylene and medium ENB for mutual matching, the heat resistance of the rubber material is improved, and the balance and improvement of the extrusion process performance, the tearing performance and the physical performance of the rubber material are ensured.
The preparation method of the rubber compound for the heat-resistant rubber plate comprises the following steps:
s1: a material mixing step: sequentially adding ethylene propylene diene monomer, zinc oxide, magnesium oxide, stearic acid and an anti-aging agent into an internal mixer, and stirring for 60s under the conditions that the rotating speed of the internal mixer is controlled at 45r/min and the mixing pressure is controlled at 6.0KGf to obtain a mixed material A;
adding paraffin oil, inorganic filler, fine carbon black and coarse carbon black into the obtained mixed material A, continuously stirring by using an internal mixer, and stirring for 90s under the conditions that the rotating speed of the internal mixer is controlled at 45r/min and the mixing pressure is controlled at 6.0KGf to obtain A rubber compound;
s2: first glue discharging: then carrying out lifting cleaning on the rubber A obtained in the step S1, and carrying out pressing and rubber discharging, so that the raw materials are mixed more uniformly in the internal mixer through lifting cleaning;
s3: and (3) a vulcanization step: cooling the A rubber batch discharged in the S2, standing for at least 24 hours, adding the A rubber batch into an internal mixer, adding a bis-25 vulcanizing agent and a crosslinking aid, stirring by the internal mixer, and stirring for 60 seconds under the conditions that the rotation speed of the internal mixer is controlled at 25r/min and the mixing pressure is controlled at 4.5KGf to obtain B rubber batch;
s4: and (3) second glue discharging: and then lifting and cleaning the B rubber obtained in the step S3, pressing and discharging the B rubber, cooling the discharged B rubber, standing for at least 24 hours to finally obtain the heat-resistant rubber plate rubber compound, volatilizing some water separant which is not volatilized from the rubber material as much as possible by standing for 24 hours, better and more fully diffusing and infiltrating molecules, simultaneously ensuring the stability of subsequent process performance and product quality, improving the qualification rate of products and reducing the generation probability of defective products.
The components and mass components of the heat-resistant rubber sheet compounds in the foregoing examples and comparative examples are shown in table 1 below:
based on the heat-resistant rubber sheets constituted by the components and mass components in the foregoing examples and comparative examples, the following performance parameters were set forth:
in summary, the following steps: as can be seen from Table 2, the heat-resistant rubber sheets containing the components in examples 1 to 4 of the present invention are significantly superior to those in comparative examples 1 to 9, and the rubber sheets processed from the heat-resistant rubber containing the components in examples 1 to 4 have a long service life, a low hardness change, a low tensile strength change at break and a low elongation at break, wherein the rubber sheet processed from the heat-resistant rubber having the content of the components in the most preferred embodiment 1 has the longest service life and the best heat resistance, when the heat-resistant rubber plate is applied to a solar panel laminating machine and the solar panel laminating machine works under the high-temperature condition, the heat-resistant rubber plate is not easy to damage, therefore, the service life of the solar panel laminating machine is prolonged, the times of replacing the heat-resistant rubber plate in the solar panel laminating machine by workers are reduced, the cost is saved, the working strength of the workers is reduced, and the production efficiency of the solar panel forming machine is improved.
The technical idea and features of the present invention are intended to be understood and implemented by those skilled in the art, and the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (8)
1. The rubber compound for the heat-resistant rubber plate comprises the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 5-8 parts of paraffin oil, 5-10 parts of zinc oxide, 5-10 parts of magnesium oxide and 4-6 parts of bis-25 vulcanizing agent, and is characterized by further comprising 20-40 parts of inorganic filler, 6-9 parts of anti-aging agent and 1.5-3.5 parts of auxiliary crosslinking agent, wherein the anti-aging agent is 445 anti-aging agent, MMB/MB anti-aging agent and RD anti-aging agent, and the proportion of the 445 anti-aging agent, the MMB/MB anti-aging agent and the RD anti-aging agent is 3: 1.5: 3.
2. a rubber compound for a heat-resistant rubber sheet according to claim 1, characterized by further comprising the following components in parts by mass: 20 to 30 parts of fine carbon black and 20 to 40 parts of coarse carbon black.
3. A rubber compound for a heat-resistant rubber sheet according to claim 1 or 2, characterized by further comprising the following components in parts by mass: 0.5 to 1.0 portion of stearic acid.
4. A rubber compound for a heat-resistant rubber plate as claimed in claim 1, wherein the ethylene propylene diene monomer is composed of two kinds of rubber, ethylene propylene diene monomer 6470 and ethylene propylene diene monomer 4045, and the ethylene propylene diene monomer 6470 comprises the following components in parts by mass: 60 to 70 portions.
5. A method of preparing a heat resistant rubber sheet mix according to claim 1, comprising the steps of:
s1: a material mixing step: sequentially adding ethylene propylene diene monomer, zinc oxide, magnesium oxide and an anti-aging agent into an internal mixer, and stirring for 40-60s under the conditions that the rotating speed of the internal mixer is controlled at 40-50r/min and the mixing pressure is controlled at 5.0-6.0KGf to obtain a mixed material A;
adding paraffin oil and inorganic filler into the obtained mixed material A, continuously stirring by using an internal mixer, and stirring for 40-90 s under the conditions that the rotating speed of the internal mixer is controlled at 40-50r/min and the mixing pressure is controlled at 5.0-6.0KGf to obtain rubber A;
s2: first glue discharging: then lifting and cleaning the A rubber obtained in S1, and pressing and discharging rubber;
s3: and (3) a vulcanization step: cooling the A rubber compound discharged from S2, standing for at least 24 hours, adding the A rubber compound into an internal mixer, adding a double 25 vulcanizing agent and an auxiliary crosslinking agent, stirring by the internal mixer, and stirring for 40-60S under the conditions that the rotation speed of the internal mixer is controlled to be 20-30 r/min and the mixing pressure is controlled to be 3.5-4.5 KGf to obtain B rubber compound;
s4: and (3) second glue discharging: and then lifting and cleaning the B rubber obtained in the step S3, pressing and discharging the B rubber, cooling the discharged B rubber, standing for at least 24 hours, and finally obtaining the heat-resistant rubber plate rubber compound.
6. The method of claim 5, wherein 0.5 to 1.0 part of stearic acid is added during the mixing of the material A in S1, and 20 to 30 parts of fine carbon black and 20 to 40 parts of coarse carbon black are added during the mixing of the material A in an internal mixer to obtain the material A.
7. A heat-resistant rubber sheet obtained by pressing the rubber composition formed by the production method according to claim 5 or 6.
8. A solar panel laminator comprising the heat resistant rubber sheet of claim 7.
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