CN110982269A - Anti-aging sealing rubber strip for building doors and windows and preparation method thereof - Google Patents
Anti-aging sealing rubber strip for building doors and windows and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C08K3/20—Oxides; Hydroxides
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- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention provides an anti-aging sealing rubber strip for building doors and windows and a preparation method thereof, which relate to the field of sealing materials and comprise the following raw materials in parts by weight: 40-60 parts of p-phenylene silicon rubber, 30-40 parts of tin coupled solution-polymerized styrene-butadiene rubber, 30-40 parts of natural rubber, 1-3 parts of zinc methacrylate, 4-8 parts of liquid polyisoprene rubber, 1-1.8 parts of dioctyl sebacate, 10-20 parts of 774 carbon black, 10-20 parts of 550 carbon black, 2-5 parts of nano magnesium hydroxide, 10-15 parts of asphalt-based chopped carbon fiber, 5-10 parts of polyvinylidene chloride, 1-3 parts of microcrystalline paraffin, 1-3 parts of stearic acid, 0.1-1.2 parts of maleic anhydride grafted ethylene propylene diene monomer, 1-1.5 parts of sulfur, 0.2-0.6 part of dicumyl peroxide, 0.5-1.5 parts of zinc dibutyl dithiocarbamate, 1-2 parts of accelerator, 1-5 parts of reinforcing component and 1.5-2.2 parts of anti-aging agent, the sealing rubber strip has excellent mechanical properties, and has small related property change, excellent thermal oxidation resistance and long service life after being subjected to 100 ℃ and 300h thermal oxidation aging test.
Description
Technical Field
The invention relates to the field of sealing materials, in particular to an anti-aging sealing rubber strip for building doors and windows and a preparation method thereof.
Background
The door and window is divided into an enclosure member or a partition member according to different positions, the door and window respectively has the functions of heat preservation, heat insulation, sound insulation, water resistance, fire resistance and the like according to different design requirements, the new requirement is energy-saving, and the heat lost by the gap between the door and the window in a cold area accounts for about 25 percent of the total heating heat consumption. The requirement of the tightness of the door and window is an important content in the energy-saving design. Doors and windows are important components of building envelope systems. The doors and windows are also important components of building modeling (the comparison between real and virtual, rhythm artistic effect, playing an important role), so that the shapes, sizes, proportions, arrangements, colors, modeling and the like of the doors and the windows have great influence on the overall modeling of the building.
The actual key of the door and window lies in sealing, and the sealing strips play a role in lifting the weight of the door and window. The sealing rubber strips used in the market are generally modified by PVC, and are easy to age after a period of time, the aged sealing strips can lose the original flexibility and elasticity, become very hard and age and shrink quickly, so that a large gap appears in the sealed part of a door and window, the tightness becomes very poor, and the phenomena of water leakage, dust leakage and the like are caused, particularly, steel linings in plastic-steel doors and windows can be corroded quickly, many users often find that a lot of red liquid flows out from the batten part in the window in rainy season and is dirty, that is, the steel linings leaked from the doors and windows are corroded too early, the service life of the doors and windows can be greatly reduced, and along with the continuous rising of the prices of various petrochemical products, the prices of rubber products such as the sealing strips are also promoted, the quality of the sealing strips produced by a lot of small manufacturers is low, and the sealing requirements can not be met easily.
Chinese patent CN107033473A discloses a weather-resistant flame-retardant nontoxic door and window sealing material, which comprises the following raw materials in parts by weight: 60-70 parts of ethylene propylene diene monomer, 25-35 parts of hydrogenated nitrile rubber, 3-5 parts of allyl alcohol, 4-8 parts of vulcanizing agent, 4-6 parts of white carbon black, 7-9 parts of aluminum oxide, 3-4 parts of zinc oxide, 6-8 parts of flame retardant, 8-12 parts of softener and 2-4 parts of antistatic agent. The door and window sealing material disclosed by the invention is high in mechanical strength, low in friction coefficient, strong in abrasion resistance, excellent in tensile recovery elasticity, and good in flame retardant property and antistatic property; meanwhile, the preparation method of the sealing material has the advantages of safe and reliable raw material components, no harm to the environment, easily available raw materials, lower cost, simple process, easy operation, realization of industrial production, higher practical value and good application prospect.
Chinese patent CN107090148A discloses a door and window sealing material, which comprises the following raw materials in parts by weight: 30-50 parts of PVC resin, 15-25 parts of epoxy resin, 5-13 parts of polyisobutylene, 2-8 parts of fumed silica, 7-18 parts of dibutyl phthalate, 5-10 parts of filler, 2-4 parts of paraffin, 1-2 parts of magnesium oxide, 3-5 parts of zinc oxide, 1.5-2.5 parts of ultraviolet absorbent, 0.1-0.5 part of light stabilizer, 0.3-0.7 part of stearic acid, 0.2-0.6 part of carbon black, 0.5-4 parts of titanium dioxide and 0.2-3 parts of photocatalyst.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an anti-aging sealing rubber strip for building doors and windows and a preparation method thereof.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
40-60 parts of p-phenylene silicon rubber, 30-40 parts of tin coupled solution-polymerized styrene-butadiene rubber, 30-40 parts of natural rubber, 1-3 parts of zinc methacrylate, 4-8 parts of liquid polyisoprene rubber, 1-1.8 parts of dioctyl sebacate, 10-20 parts of 774 carbon black, 10-20 parts of 550 carbon black, 2-5 parts of nano magnesium hydroxide and 10-15 parts of asphalt-based chopped carbon fiber, 5-10 parts of polyvinylidene chloride, 1-3 parts of microcrystalline wax, 1-3 parts of stearic acid, 0.1-1.2 parts of maleic anhydride grafted ethylene propylene diene monomer, 1-1.5 parts of sulfur, 0.2-0.6 part of dicumyl peroxide, 0.5-1.5 parts of zinc dibutyl dithiocarbamate, 1-2 parts of accelerator, 1-5 parts of reinforcing component and 1.5-2.2 parts of anti-aging agent.
Further, the feed comprises the following raw materials in parts by weight:
48 parts of p-phenylene silicon rubber, 30 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 35 parts of natural rubber, 1.2 parts of zinc methacrylate, 5 parts of liquid polyisoprene rubber, 1.3 parts of dioctyl sebacate, 12 parts of 774 carbon black, 15 parts of 550 carbon black, 3 parts of nano magnesium hydroxide, 14 parts of asphalt-based chopped carbon fibers, 10 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 2.5 parts of stearic acid, 1 part of maleic anhydride-grafted ethylene-propylene-diene monomer rubber, 1.2 parts of sulfur, 0.5 part of dicumyl peroxide, 1.5 parts of zinc dibutyl dithiocarbamate, 2 parts of an accelerator, 4 parts of a reinforcing component and 2 parts of an anti-aging agent.
Further, the feed comprises the following raw materials in parts by weight:
55 parts of p-phenylene silicon rubber, 40 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 32 parts of natural rubber, 1 part of zinc methacrylate, 6 parts of liquid polyisoprene rubber, 1.3 parts of dioctyl sebacate, 20 parts of 774 carbon black, 12 parts of 550 carbon black, 4 parts of nano magnesium hydroxide, 14 parts of asphalt-based chopped carbon fibers, 5.5 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 1 part of stearic acid, 0.4 part of maleic anhydride-grafted ethylene-propylene-diene monomer, 1 part of sulfur, 0.5 part of dicumyl peroxide, 0.8 part of zinc dibutyl dithiocarbamate, 1.5 parts of an accelerator, 2 parts of a reinforcing component and 1.8 parts of an anti-aging agent.
Further, the accelerator is an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 1-10.
Further, the reinforcing component is nano-cellulose and rod-shaped active silicon dioxide in a weight ratio of 1-5: 1-5 are compounded.
Further, the anti-aging agent is anti-aging agent RD and anti-aging agent 4020, and the weight ratio is 1: 2 is prepared by compounding.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 38-42 ℃ and the temperature of a rear roller to be 45-48 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 2-4 times, and storing and cooling at room temperature for 5-10h after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 100-120 ℃, and mixing for 12-15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fiber, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene rubber, dicumyl peroxide, zinc dibutyl dithiocarbamate and a reinforcing component, heating to 130-145 ℃, mixing for 5-10min, cooling to 70-80 ℃, adding sulfur, mixing for 1-3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, alternately adding the carbon black mixture and dioctyl sebacate for multiple times, mixing for 1-3min after the addition is finished, cooling to 50-55 ℃, adding an accelerator and an anti-aging agent, mixing for 1-3min, and discharging rubber;
(4) adding the rubber material into a two-roller open mill, thinly passing for 4-6 times, then discharging, balancing for 20-40h at room temperature, heating a flat vulcanizing machine to a specified temperature, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold with the filler in a segmented pressurizing manner until the molten material overflows from an overflow port, placing the mold into the flat vulcanizing machine, maintaining the pressure for 50-80min at the pressure of 15-18MPa, slowly cooling the vulcanized rubber mold to room temperature, opening the mold, taking out the rubber strip, and cooling for 40-50h at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 40-50 ℃ for 5-10h, and taking out.
Further, in the step (3), the carbon black mixture and dioctyl sebacate were uniformly divided into 5 parts, and the carbon black mixture and dioctyl sebacate were alternately added.
Further, the temperature of the press vulcanizer in the step (4) is 160-.
Further, the step (4) of pressurizing the filler is specifically operated as follows: heating and pressurizing the mold filled with the rubber material to 2-3MPa and 100-120 ℃, keeping the temperature and pressure for 1-3min, adding the rubber material into the filled mold, and repeating the operation for multiple times until the molten material overflows from the overflow port.
(III) advantageous effects
The invention provides an anti-aging sealing rubber strip for building doors and windows and a preparation method thereof, and the anti-aging sealing rubber strip has the following beneficial effects:
the p-phenylene silicon rubber contains benzene rings and silicon atoms, has higher thermal stability and elasticity at high temperature compared with common silicon rubber, and has better resilience performance at low temperature below zero due to the introduction of phenyl in the molecular structure, thereby destroying the regularity of the siloxane molecular structure, reducing the crystallinity of the polymer, improving the cold resistance, but having poorer mechanical performance. The liquid polyisoprene rubber is used as a reactive plasticizer, so that the strength, hardness and elongation at break of the sealing rubber strip are improved, the sealing rubber strip is not easy to migrate and is not easy to be extracted by a solvent, the aging resistance of the rubber is improved, and the synergistic use effect of the liquid polyisoprene rubber and dioctyl sebacate is better.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but 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.
Example 1:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
48 parts of p-phenylene silicon rubber, 30 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 35 parts of natural rubber, 1.2 parts of zinc methacrylate, 5 parts of liquid polyisoprene rubber, 1.3 parts of dioctyl sebacate, 12 parts of 774 carbon black, 15 parts of 550 carbon black, 3 parts of nano magnesium hydroxide, 14 parts of asphalt-based chopped carbon fiber, 10 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 2.5 parts of stearic acid, 1 part of maleic anhydride grafted ethylene propylene diene rubber, 1.2 parts of sulfur, 0.5 part of dicumyl peroxide, 1.5 parts of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 6, 2 parts of a compounded accelerant, nano-cellulose and rodlike active silicon dioxide according to the weight ratio of 3: 2, 4 parts of reinforcing component, antioxidant RD and antioxidant 4020, in a weight ratio of 1: 2 parts of an anti-aging agent.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 40 ℃ and the temperature of a rear roller to be 45 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 4 times, and storing and cooling for 10 hours at room temperature after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 110 ℃, and mixing for 15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 140 ℃, mixing for 10min, cooling to 75 ℃, adding sulfur, mixing for 3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 3min after the addition is finished, cooling to 55 ℃, adding an accelerator and an anti-aging agent, mixing for 1min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 5 times, then discharging, balancing for 20 hours at room temperature, heating a flat vulcanizing machine to 180 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 2MPa and 120 ℃, keeping the temperature and the pressure for 1 minute, then adding the rubber material into the filled mold, repeating the operation for multiple times until a molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 60 minutes at the pressure of 16MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 50 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 50 ℃ for 8h, and taking out.
Example 2:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
55 parts of p-phenylene silicon rubber, 40 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 32 parts of natural rubber, 1 part of zinc methacrylate, 6 parts of liquid polyisoprene rubber, 1.3 parts of dioctyl sebacate, 20 parts of 774 carbon black, 12 parts of 550 carbon black, 4 parts of nano magnesium hydroxide, 14 parts of asphalt-based chopped carbon fiber, 5.5 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 1 part of stearic acid, 0.4 part of maleic anhydride grafted ethylene propylene diene monomer, 1 part of sulfur, 0.5 part of dicumyl peroxide, 0.8 part of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 5, 1.5 parts of accelerator, nano-cellulose and rodlike active silicon dioxide which are compounded according to the weight ratio of 1: 1, 2 parts of reinforcing component, antioxidant RD and antioxidant 4020, in a weight ratio of 1: 2 and 1.8 parts of antioxidant.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 38 ℃ and the temperature of a rear roller to be 46 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 2 times, and storing and cooling at room temperature for 8 hours after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 120 ℃, and mixing for 14min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 135 ℃, mixing for 6min, cooling to 75 ℃, adding sulfur, mixing for 3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 3min after the addition is finished, cooling to 55 ℃, adding an accelerator and an anti-aging agent, mixing for 1min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 5 times, then discharging, balancing for 30 hours at room temperature, heating a flat vulcanizing machine to 180 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 3MPa and 120 ℃, keeping the temperature and pressure for 3 minutes, then adding the rubber material into the filled mold, repeating the operation for multiple times until a molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 60 minutes at the pressure of 16MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 50 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 50 ℃ for 6h, and taking out.
Example 3:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
45 parts of p-phenylene silicon rubber, 40 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 32 parts of natural rubber, 1 part of zinc methacrylate, 5 parts of liquid polyisoprene rubber, 1 part of dioctyl sebacate, 15 parts of 774 carbon black, 20 parts of 550 carbon black, 5 parts of nano magnesium hydroxide, 12 parts of asphalt-based chopped carbon fibers, 10 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 2 parts of stearic acid, 0.5 part of maleic anhydride grafted ethylene-propylene-diene rubber, 1 part of sulfur, 0.4 part of dicumyl peroxide, 0.8 part of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD according to the weight ratio of 1: 1: 6, 1 part of accelerator, nano-cellulose and rodlike active silicon dioxide which are compounded according to the weight ratio of 5: 1, 2 parts of reinforcing component, antioxidant RD and antioxidant 4020, in a weight ratio of 1: 2 parts of an anti-aging agent.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 40 ℃ and the temperature of a rear roller to be 45 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 4 times, and storing and cooling for 10 hours at room temperature after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 105 ℃, and mixing for 15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 130 ℃, mixing for 10min, cooling to 75 ℃, adding sulfur, mixing for 3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 3min after the addition is finished, cooling to 50 ℃, adding an accelerator and an anti-aging agent, mixing for 1min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 4 times, then discharging, balancing for 40 hours at room temperature, heating a flat vulcanizing machine to 160 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 3MPa and 120 ℃, keeping the temperature and the pressure for 1 minute, then adding the rubber material into the filled mold, repeating the operation for multiple times until a molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 70 minutes at the pressure of 15MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 50 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 40 ℃ for 8h, and taking out.
Example 4:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
40 parts of p-phenylene silicon rubber, 40 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 30 parts of natural rubber, 3 parts of zinc methacrylate, 4 parts of liquid polyisoprene rubber, 1.8 parts of dioctyl sebacate, 10 parts of 774 carbon black, 20 parts of 550 carbon black, 2 parts of nano magnesium hydroxide, 15 parts of asphalt-based chopped carbon fiber, 5 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 1 part of stearic acid, 1.2 parts of maleic anhydride grafted ethylene-propylene-diene monomer rubber, 1 part of sulfur, 0.6 part of dicumyl peroxide, 0.5 part of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 10, 1 part of accelerator, nano-cellulose and rodlike active silicon dioxide which are compounded according to the weight ratio of 5: 1, reinforcing component 5 parts, anti-aging agent RD and anti-aging agent 4020 in a weight ratio of 1: 2 and 1.5 parts of antioxidant.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 42 ℃ and the temperature of a rear roller to be 45 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 4 times, and storing and cooling for 5 hours at room temperature after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 120 ℃, and mixing for 12min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 145 ℃, mixing for 5min, cooling to 80 ℃, adding sulfur, mixing for 1min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 3min after the addition is finished, cooling to 50 ℃, adding an accelerator and an anti-aging agent, mixing for 3min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 4 times, then discharging, balancing for 40 hours at room temperature, heating a flat vulcanizing machine to 160 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 3MPa and 100 ℃, keeping the temperature and pressure for 3 minutes, then adding the rubber material into the filled mold, repeating the operation for multiple times until a molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 80 minutes at the pressure of 15MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 40 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 50 ℃ for 5h, and taking out.
Example 5:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
40 parts of p-phenylene silicon rubber, 35 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 40 parts of natural rubber, 3 parts of zinc methacrylate, 5 parts of liquid polyisoprene rubber, 1 part of dioctyl sebacate, 12 parts of 774 carbon black, 20 parts of 550 carbon black, 5 parts of nano magnesium hydroxide, 10 parts of asphalt-based chopped carbon fibers, 8 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 2 parts of stearic acid, 0.3 part of maleic anhydride grafted ethylene-propylene-diene rubber, 1.5 parts of sulfur, 0.5 part of dicumyl peroxide, 1.5 parts of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 5, 2 parts of a compounded accelerant, nano-cellulose and rodlike active silicon dioxide according to the weight ratio of 3: 1, 2 parts of reinforcing component, antioxidant RD and antioxidant 4020, in a weight ratio of 1: 2 and 1.8 parts of antioxidant.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 40 ℃ and the temperature of a rear roller to be 48 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 2 times, and storing and cooling at room temperature for 8 hours after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 120 ℃, and mixing for 14min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 130 ℃, mixing for 10min, cooling to 80 ℃, adding sulfur, mixing for 1min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 1min after the addition is finished, cooling to 55 ℃, adding an accelerator and an anti-aging agent, mixing for 3min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 6 times, then discharging, balancing for 35 hours at room temperature, heating a flat vulcanizing machine to 185 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 3MPa and 120 ℃, keeping the temperature and pressure for 3 minutes, then adding the rubber material into the filled mold, repeating the operation for multiple times until the molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 80 minutes at the pressure of 16MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 45 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 50 ℃ for 8h, and taking out.
Example 6:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
60 parts of p-phenylene silicon rubber, 35 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 30 parts of natural rubber, 3 parts of zinc methacrylate, 5 parts of liquid polyisoprene rubber, 1.8 parts of dioctyl sebacate, 12 parts of 774 carbon black, 10 parts of 550 carbon black, 5 parts of nano magnesium hydroxide, 15 parts of asphalt-based chopped carbon fiber, 8 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 2 parts of stearic acid, 0.1 part of maleic anhydride grafted ethylene-propylene-diene monomer rubber, 1.4 parts of sulfur, 0.6 part of dicumyl peroxide, 1.5 parts of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 6, 2 parts of a compounded accelerant, nano-cellulose and rodlike active silicon dioxide, wherein the weight ratio of the nano-cellulose to the rodlike active silicon dioxide is 1: 5, 3 parts of reinforcing component, antioxidant RD and antioxidant 4020, in a weight ratio of 1: 2.2 parts of age inhibitor.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 40 ℃ and the temperature of a rear roller to be 48 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 4 times, and storing and cooling at room temperature for 8 hours after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 100 ℃, and mixing for 15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 140 ℃, mixing for 10min, cooling to 75 ℃, adding sulfur, mixing for 3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 3min after the addition is finished, cooling to 55 ℃, adding an accelerator and an anti-aging agent, mixing for 1min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 5 times, then discharging, balancing for 20 hours at room temperature, heating a flat vulcanizing machine to 185 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 3MPa and 120 ℃, keeping the temperature and the pressure for 1 minute, then adding the rubber material into the filled mold, repeating the operation for multiple times until the molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 60 minutes at the pressure of 16MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 50 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 40 ℃ for 8h, and taking out.
Example 7:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
60 parts of p-phenylene silicon rubber, 30 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 40 parts of natural rubber, 1 part of zinc methacrylate, 8 parts of liquid polyisoprene rubber, 1 part of dioctyl sebacate, 20 parts of 774 carbon black, 10 parts of 550 carbon black, 5 parts of nano magnesium hydroxide, 10 parts of asphalt-based chopped carbon fiber, 10 parts of polyvinylidene chloride, 1 part of microcrystalline paraffin, 3 parts of stearic acid, 0.1 part of maleic anhydride grafted ethylene-propylene-diene rubber, 1.5 parts of sulfur, 0.2 part of dicumyl peroxide, 1.5 parts of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 1, 2 parts of a promoter, nano-cellulose and rodlike active silicon dioxide which are compounded according to the weight ratio of 1: 5, 1 part of reinforcing component, antioxidant RD and antioxidant 4020, in a weight ratio of 1: 2.2 parts of age inhibitor.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 38 ℃ and the temperature of a rear roller to be 48 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 2 times, and storing and cooling at room temperature for 10 hours after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 100 ℃, and mixing for 15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 130 ℃, mixing for 10min, cooling to 70 ℃, adding sulfur, mixing for 3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 1min after the addition is finished, cooling to 55 ℃, adding an accelerator and an anti-aging agent, mixing for 1min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 6 times, then discharging, balancing for 20 hours at room temperature, heating a flat vulcanizing machine to 185 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 2MPa and 120 ℃, keeping the temperature and the pressure for 1 minute, then adding the rubber material into the filled mold, repeating the operation for multiple times until the molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 50 minutes at 18MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 50 hours at room temperature;
(5) and (3) adding the cooled adhesive tape into an oven, standing for 10h at 40 ℃, and taking out.
Example 8:
an anti-aging sealing rubber strip for building doors and windows comprises the following raw materials in parts by weight:
50 parts of p-phenylene silicon rubber, 30 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 30 parts of natural rubber, 2 parts of zinc methacrylate, 6 parts of liquid polyisoprene rubber, 1 part of dioctyl sebacate, 15 parts of 774 carbon black, 10 parts of 550 carbon black, 5 parts of nano magnesium hydroxide, 12 parts of asphalt-based chopped carbon fibers, 10 parts of polyvinylidene chloride, 2 parts of microcrystalline paraffin, 3 parts of stearic acid, 0.1 part of maleic anhydride grafted ethylene-propylene-diene rubber, 1 part of sulfur, 0.2 part of dicumyl peroxide, 0.5 part of zinc dibutyl dithiocarbamate, an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 1, 1 part of a compounded accelerant, nano-cellulose and rodlike active silicon dioxide, wherein the weight ratio of the nano-cellulose to the rodlike active silicon dioxide is 5: 1, reinforcing component 5 parts, anti-aging agent RD and anti-aging agent 4020 in a weight ratio of 1: 2 and 1.5 parts of antioxidant.
The preparation method of the anti-aging sealing rubber strip for the building doors and windows comprises the following specific steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 40 ℃ and the temperature of a rear roller to be 45 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 4 times, and storing and cooling for 10 hours at room temperature after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 100 ℃, and mixing for 15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fibers, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene monomer, dicumyl peroxide, zinc dibutyl dithiocarbamate and reinforcing components, heating to 140 ℃, mixing for 10min, cooling to 80 ℃, adding sulfur, mixing for 3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, uniformly dividing the carbon black mixture and dioctyl sebacate into 5 parts, alternately adding the carbon black mixture and dioctyl sebacate, mixing for 3min after the addition is finished, cooling to 55 ℃, adding an accelerator and an anti-aging agent, mixing for 3min, and discharging rubber;
(4) adding the rubber material into a two-roll open mill, thinly passing for 5 times, then discharging, balancing for 20 hours at room temperature, heating a flat vulcanizing machine to 185 ℃, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold, heating and pressurizing the mold filled with the rubber material to 3MPa and 100 ℃, keeping the temperature and pressure for 3 minutes, then adding the rubber material into the filled mold, repeating the operation for multiple times until the molten material overflows from an overflow port, then placing the mold into the flat vulcanizing machine, keeping the pressure for 70 minutes at the pressure of 16MPa, slowly cooling the vulcanized rubber mold to room temperature, then opening the mold, taking out the rubber strip, and cooling for 50 hours at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 50 ℃ for 8h, and taking out.
The following table 1 shows the results of the performance tests of the sealing rubber strips of examples 1 to 3 of the present invention:
table 1:
the results of the performance tests of the joint strip of example 1 after 300h of thermo-oxidative ageing at 100 ℃ are shown in table 2 below:
table 2:
as can be seen from the above table 1, the sealing rubber strip of the present invention has excellent mechanical properties, and the related performance changes are small after the thermal oxidation aging test at 100 ℃ for 300h, and the sealing rubber strip has excellent oxidation resistance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; 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 anti-aging sealing rubber strip for the building doors and windows is characterized by comprising the following raw materials in parts by weight:
40-60 parts of p-phenylene silicon rubber, 30-40 parts of tin coupled solution-polymerized styrene-butadiene rubber, 30-40 parts of natural rubber, 1-3 parts of zinc methacrylate, 4-8 parts of liquid polyisoprene rubber, 1-1.8 parts of dioctyl sebacate, 10-20 parts of 774 carbon black, 10-20 parts of 550 carbon black, 2-5 parts of nano magnesium hydroxide and 10-15 parts of asphalt-based chopped carbon fiber, 5-10 parts of polyvinylidene chloride, 1-3 parts of microcrystalline wax, 1-3 parts of stearic acid, 0.1-1.2 parts of maleic anhydride grafted ethylene propylene diene monomer, 1-1.5 parts of sulfur, 0.2-0.6 part of dicumyl peroxide, 0.5-1.5 parts of zinc dibutyl dithiocarbamate, 1-2 parts of accelerator, 1-5 parts of reinforcing component and 1.5-2.2 parts of anti-aging agent.
2. The aging-resistant sealing rubber strip for the building doors and windows as claimed in claim 1, which comprises the following raw materials in parts by weight:
48 parts of p-phenylene silicon rubber, 30 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 35 parts of natural rubber, 1.2 parts of zinc methacrylate, 5 parts of liquid polyisoprene rubber, 1.3 parts of dioctyl sebacate, 12 parts of 774 carbon black, 15 parts of 550 carbon black, 3 parts of nano magnesium hydroxide, 14 parts of asphalt-based chopped carbon fibers, 10 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 2.5 parts of stearic acid, 1 part of maleic anhydride-grafted ethylene-propylene-diene monomer rubber, 1.2 parts of sulfur, 0.5 part of dicumyl peroxide, 1.5 parts of zinc dibutyl dithiocarbamate, 2 parts of an accelerator, 4 parts of a reinforcing component and 2 parts of an anti-aging agent.
3. The aging-resistant sealing rubber strip for the building doors and windows as claimed in claim 1, which comprises the following raw materials in parts by weight:
55 parts of p-phenylene silicon rubber, 40 parts of tin-coupled solution-polymerized styrene-butadiene rubber, 32 parts of natural rubber, 1 part of zinc methacrylate, 6 parts of liquid polyisoprene rubber, 1.3 parts of dioctyl sebacate, 20 parts of 774 carbon black, 12 parts of 550 carbon black, 4 parts of nano magnesium hydroxide, 14 parts of asphalt-based chopped carbon fibers, 5.5 parts of polyvinylidene chloride, 3 parts of microcrystalline paraffin, 1 part of stearic acid, 0.4 part of maleic anhydride-grafted ethylene-propylene-diene monomer, 1 part of sulfur, 0.5 part of dicumyl peroxide, 0.8 part of zinc dibutyl dithiocarbamate, 1.5 parts of an accelerator, 2 parts of a reinforcing component and 1.8 parts of an anti-aging agent.
4. The aging-resistant joint strip for building doors and windows according to claim 1, wherein the accelerator is an accelerator M, an accelerator DM and an accelerator TMTD in a weight ratio of 1: 1: 1-10.
5. The aging-resistant joint strip for building doors and windows according to claim 1, wherein the reinforcing component is nano-cellulose and rod-shaped active silica in a weight ratio of 1-5: 1-5 are compounded.
6. The aging-resistant joint strip for building doors and windows according to claim 1, wherein the antioxidant is antioxidant RD and antioxidant 4020, and the weight ratio of the antioxidant RD to the antioxidant 4020 is 1: 2 is prepared by compounding.
7. The preparation method of the aging-resistant sealing rubber strip for the building doors and windows as claimed in any one of claims 1 to 6, which is characterized in that the method comprises the following steps:
(1) adding tin coupling solution polymerized styrene butadiene rubber into a two-roller open mill, adjusting the roller distance of the two-roller open mill to 0.5-1mm, controlling the temperature of a front roller to be 38-42 ℃ and the temperature of a rear roller to be 45-48 ℃, carrying out thin passing in 3 sections, carrying out thin passing in each section for 2-4 times, and storing and cooling at room temperature for 5-10h after each section is thin passed;
(2) adding p-phenylene silicon rubber, natural rubber and the tin-coupled solution polymerized styrene-butadiene rubber into an internal mixer, heating to 100-120 ℃, and mixing for 12-15min to obtain a mixed rubber material;
(3) adding zinc methacrylate, liquid polyisoprene rubber, nano magnesium hydroxide, asphalt-based chopped carbon fiber, polyvinylidene chloride, microcrystalline paraffin, stearic acid, maleic anhydride grafted ethylene propylene diene rubber, dicumyl peroxide, zinc dibutyl dithiocarbamate and a reinforcing component, heating to 130-145 ℃, mixing for 5-10min, cooling to 70-80 ℃, adding sulfur, mixing for 1-3min, uniformly mixing 774 carbon black and 550 carbon black to obtain a carbon black mixture, alternately adding the carbon black mixture and dioctyl sebacate for multiple times, mixing for 1-3min after the addition is finished, cooling to 50-55 ℃, adding an accelerator and an anti-aging agent, mixing for 1-3min, and discharging rubber;
(4) adding the rubber material into a two-roller open mill, thinly passing for 4-6 times, then discharging, balancing for 20-40h at room temperature, heating a flat vulcanizing machine to a specified temperature, cutting the balanced rubber material, adding the cut rubber material into a mold, filling the mold with the filler in a segmented pressurizing manner until the molten material overflows from an overflow port, placing the mold into the flat vulcanizing machine, maintaining the pressure for 50-80min at the pressure of 15-18MPa, slowly cooling the vulcanized rubber mold to room temperature, opening the mold, taking out the rubber strip, and cooling for 40-50h at room temperature;
(5) and adding the cooled adhesive tape into an oven, standing at 40-50 ℃ for 5-10h, and taking out.
8. The method for preparing an anti-aging joint strip for building doors and windows according to claim 7, wherein in the step (3), the carbon black mixture and the dioctyl sebacate are uniformly divided into 5 parts respectively, and then the carbon black mixture and the dioctyl sebacate are added alternately.
9. The method for preparing the aging-resistant sealing rubber strip for the building doors and windows as claimed in claim 7, wherein the temperature of the vulcanizing press in the step (4) is 160 ℃ and 185 ℃.
10. The method for preparing the aging-resistant joint strip for building doors and windows according to claim 7, wherein the step (4) of pressurizing the filler is specifically performed by: heating and pressurizing the mold filled with the rubber material to 2-3MPa and 100-120 ℃, keeping the temperature and pressure for 1-3min, adding the rubber material into the filled mold, and repeating the operation for multiple times until the molten material overflows from the overflow port.
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| CN201911203287.7A CN110982269A (en) | 2019-11-29 | 2019-11-29 | Anti-aging sealing rubber strip for building doors and windows and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763363A (en) * | 2020-07-14 | 2020-10-13 | 盐城耀晖人防防护设备科技有限公司 | Styrene butadiene rubber-based right-angle civil air defense door sealing rubber strip and preparation method thereof |
| CN115558295A (en) * | 2021-07-02 | 2023-01-03 | 太仓瑞易得塑胶制造有限公司 | Silicone rubber sealing strip for building doors and windows and preparation method thereof |
-
2019
- 2019-11-29 CN CN201911203287.7A patent/CN110982269A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763363A (en) * | 2020-07-14 | 2020-10-13 | 盐城耀晖人防防护设备科技有限公司 | Styrene butadiene rubber-based right-angle civil air defense door sealing rubber strip and preparation method thereof |
| CN115558295A (en) * | 2021-07-02 | 2023-01-03 | 太仓瑞易得塑胶制造有限公司 | Silicone rubber sealing strip for building doors and windows and preparation method thereof |
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Application publication date: 20200410 |