CN112029286A - Environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket and preparation method thereof - Google Patents
Environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket and preparation method thereof Download PDFInfo
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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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
- 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
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
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- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- 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
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- 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
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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
- C08L2201/02—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
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses an environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket which comprises the following raw materials in parts by weight: 20-30 parts of silicon rubber, 1-5 parts of nano graphite sheet, 10-15 parts of alumina powder, 1-3 parts of argil, 7-12 parts of diphenyl terephthalate, 5-10 parts of plasticizer, 6-8 parts of vulcanizing agent, 5-10 parts of nano silicon dioxide, 2-6 parts of quartz fiber, 15-20 parts of polyester fiber, 5-8 parts of zinc oxide and 10-20 parts of titanium dioxide. According to the invention, the silicon rubber, the nano graphite sheet, the alumina powder and the argil are added into a mixing roll and mixed for 17-23 minutes at 130 ℃ to obtain the rubber raw stock A, and the rubber raw material A is a mixture of flame retardant materials, so that flame is weakened when combustion occurs, and the rubber raw stock A has good flame retardant property and higher safety.
Description
Technical Field
The invention relates to the technical field of air duct gaskets, in particular to an environment-friendly, flame-retardant, ozone-resistant and anti-aging marine rubber air duct gasket and a preparation method thereof.
Background
The air duct is a duct system for conveying and distributing air. There are two kinds of composite air pipe and inorganic air pipe. The composite air duct is represented by an air duct. They can be classified according to their sectional shapes and materials. The stainless steel air duct is made by coating sealing glue (such as neutral glass cement) on the seams such as seaming seam, rivet seam, flange flanging four corners, etc.
Before the sealant is coated, dust and oil stains on the surface are removed. According to the cross section shape, the air pipe can be divided into a circular air pipe, a rectangular air pipe, an oblate air pipe and the like, wherein the circular air pipe has the smallest resistance but the largest height and size, and is complex to manufacture. So the application is mainly based on a rectangular air pipe. The air pipe can be divided into a metal air pipe, a composite air pipe and a polymer air pipe according to the material.
The air pipe gasket is required to be involved in the installation process of the air pipe, and the air pipe gasket in the prior art has many defects in use due to the irrational formula, and is particularly reflected in three aspects of flame retardance, ozone resistance and ageing resistance.
Therefore, the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket and the preparation method thereof are provided.
Disclosure of Invention
The invention aims to: in order to solve the problems, the invention provides the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket and the preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following raw materials in parts by weight: 20-30 parts of silicon rubber, 1-5 parts of nano graphite sheet, 10-15 parts of alumina powder, 1-3 parts of argil, 7-12 parts of diphenyl terephthalate, 5-10 parts of plasticizer, 6-8 parts of vulcanizing agent, 5-10 parts of nano silicon dioxide, 2-6 parts of quartz fiber, 15-20 parts of polyester fiber, 5-8 parts of zinc oxide and 10-20 parts of titanium dioxide.
As a further description of the above technical solution:
the thickness of the nano graphite sheet is 50 nm-100 nm, and the diameter of the nano graphite sheet is 5 mu m-10 mu m.
As a further description of the above technical solution:
and the particle size of the alumina powder is less than or equal to 100 mu m of spherical alumina particles.
As a further description of the above technical solution:
the preparation method of the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following steps:
a. preparing materials:
adding silicon rubber, nano graphite sheets, alumina powder and argil into a mixing roll, and mixing for 17-23 minutes at 130 ℃ to obtain rubber raw stock A;
adding silicon rubber, diphenyl terephthalate, a plasticizer and a vulcanizing agent into a mixing roll, and mixing for 20-25 minutes at 130 ℃ to obtain rubber raw stock B;
adding silicon rubber, nano silicon dioxide, quartz fiber, hard ester fiber, zinc oxide and titanium dioxide into a mixing roll, and mixing for 15-30 minutes at 130 ℃ to obtain rubber raw stock C;
b. stirring:
pouring the rubber raw stock A, the rubber raw stock B and the rubber raw stock C into a stirring device, and fully and uniformly stirring to obtain a mixture;
c. banburying and forming:
and (3) putting the mixture into an internal mixer, raising the temperature in the internal mixer to 125-135 ℃, carrying out internal mixing for 6-7min, standing and curing for 30-40h, controlling the rubber temperature to be below 100 ℃, discharging rubber, carrying out sheet discharging on an open rubber mixing mill, cooling and standing and curing to obtain the rubber air duct gasket.
As a further description of the above technical solution:
and the stirring time in the step b is 30-40 min.
As a further description of the above technical solution:
the standing curing temperature in the step c is controlled at 110-120 ℃.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the silicon rubber, the nano graphite sheet, the alumina powder and the argil are added into a mixing roll and mixed for 17-23 minutes at 130 ℃ to obtain the rubber raw stock A, and the rubber raw material A is a mixture of flame retardant materials, so that flame is weakened when combustion occurs, and the rubber raw stock A has good flame retardant property and higher safety.
2. According to the invention, the silicon rubber, the diphenyl terephthalate, the plasticizer and the vulcanizing agent are added into the mixing roll and mixed for 20-25 minutes at 130 ℃ to obtain the rubber raw stock B, and the rubber raw stock B has high temperature resistance and ozone resistance and meets the increasing use requirements of the air duct gasket.
3. According to the invention, the silicon rubber, the nano silicon dioxide, the quartz fiber, the hard ester fiber, the zinc oxide and the titanium dioxide are added into a mixing roll and mixed for 15-30 minutes at 130 ℃ to obtain the rubber raw stock C, and the rubber raw stock C enhances the pressure resistance and the anti-aging and anti-corrosion performance of the rubber gasket and prolongs the service life of the sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments 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.
Example 1
The environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following raw materials in parts by weight: 20 parts of silicon rubber, 2 parts of nano graphite flakes, 10 parts of alumina powder, 2 parts of argil, 7 parts of diphenyl terephthalate, 8 parts of plasticizer, 8 parts of vulcanizing agent, 8 parts of nano silicon dioxide, 3 parts of quartz fiber, 15 parts of hard ester fiber, 5 parts of zinc oxide and 12 parts of titanium dioxide, wherein the thickness of the nano graphite flakes is 50-100 nm, the diameter of the nano graphite flakes is 5-10 mu m, and the particle size of the alumina powder is less than or equal to 100 mu m of spherical alumina particles.
The preparation method of the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following steps: a. preparing materials:
adding silicon rubber, nano graphite sheets, alumina powder and argil into a mixing roll, and mixing for 17-23 minutes at 130 ℃ to obtain rubber raw stock A;
adding silicon rubber, diphenyl terephthalate, a plasticizer and a vulcanizing agent into a mixing roll, and mixing for 20-25 minutes at 130 ℃ to obtain rubber raw stock B;
adding silicon rubber, nano silicon dioxide, quartz fiber, hard ester fiber, zinc oxide and titanium dioxide into a mixing roll, and mixing for 15-30 minutes at 130 ℃ to obtain rubber raw stock C;
b. stirring:
pouring the rubber raw stock A, the rubber raw stock B and the rubber raw stock C into a stirring device, and fully and uniformly stirring to obtain a mixture, wherein the stirring time in the step B is 30-40 min;
c. banburying and forming:
and (C) putting the mixture into an internal mixer, raising the temperature in the internal mixer to 125-plus 135 ℃, carrying out internal mixing for 6-7min, standing and curing for 30-40h, controlling the rubber temperature below 100 ℃ for rubber discharge, carrying out sheet discharging, cooling and standing and curing on an open rubber mixing mill to obtain the rubber air duct gasket, wherein the standing and curing temperature in the step C is controlled to 110-plus 120 ℃.
Example 2
The environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following raw materials in parts by weight: 20 parts of silicon rubber, 3 parts of nano graphite flakes, 10 parts of alumina powder, 1 part of argil, 10 parts of diphenyl terephthalate, 5 parts of plasticizer, 7 parts of vulcanizing agent, 9 parts of nano silicon dioxide, 5 parts of quartz fiber, 15 parts of hard ester fiber, 5 parts of zinc oxide and 10 parts of titanium dioxide, wherein the thickness of the nano graphite flakes is 50-100 nm, the diameter of the nano graphite flakes is 5-10 mu m, and the particle size of the alumina powder is less than or equal to 100 mu m of spherical alumina particles.
The preparation method of the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following steps: a. preparing materials:
adding silicon rubber, nano graphite sheets, alumina powder and argil into a mixing roll, and mixing for 17-23 minutes at 130 ℃ to obtain rubber raw stock A;
adding silicon rubber, diphenyl terephthalate, a plasticizer and a vulcanizing agent into a mixing roll, and mixing for 20-25 minutes at 130 ℃ to obtain rubber raw stock B;
adding silicon rubber, nano silicon dioxide, quartz fiber, hard ester fiber, zinc oxide and titanium dioxide into a mixing roll, and mixing for 15-30 minutes at 130 ℃ to obtain rubber raw stock C;
b. stirring:
pouring the rubber raw stock A, the rubber raw stock B and the rubber raw stock C into a stirring device, and fully and uniformly stirring to obtain a mixture, wherein the stirring time in the step B is 30-40 min;
c. banburying and forming:
and (C) putting the mixture into an internal mixer, raising the temperature in the internal mixer to 125-plus 135 ℃, carrying out internal mixing for 6-7min, standing and curing for 30-40h, controlling the rubber temperature below 100 ℃ for rubber discharge, carrying out sheet discharging, cooling and standing and curing on an open rubber mixing mill to obtain the rubber air duct gasket, wherein the standing and curing temperature in the step C is controlled to 110-plus 120 ℃.
Example 3
The environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following raw materials in parts by weight: 25 parts of silicon rubber, 1 part of nano graphite flake, 10 parts of alumina powder, 3 parts of argil, 8 parts of diphenyl terephthalate, 6 parts of plasticizer, 6 parts of vulcanizing agent, 5 parts of nano silicon dioxide, 3 parts of quartz fiber, 16 parts of hard ester fiber, 5 parts of zinc oxide and 12 parts of titanium dioxide, wherein the thickness of the nano graphite flake is 50 nm-100 nm, the diameter of the nano graphite flake is 5 mu m-10 mu m, and the particle size of the alumina powder is less than or equal to 100 mu m of spherical alumina particles.
The preparation method of the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket comprises the following steps: a. preparing materials:
adding silicon rubber, nano graphite sheets, alumina powder and argil into a mixing roll, and mixing for 17-23 minutes at 130 ℃ to obtain rubber raw stock A;
adding silicon rubber, diphenyl terephthalate, a plasticizer and a vulcanizing agent into a mixing roll, and mixing for 20-25 minutes at 130 ℃ to obtain rubber raw stock B;
adding silicon rubber, nano silicon dioxide, quartz fiber, hard ester fiber, zinc oxide and titanium dioxide into a mixing roll, and mixing for 15-30 minutes at 130 ℃ to obtain rubber raw stock C;
b. stirring:
pouring the rubber raw stock A, the rubber raw stock B and the rubber raw stock C into a stirring device, and fully and uniformly stirring to obtain a mixture, wherein the stirring time in the step B is 30-40 min;
c. banburying and forming:
and (C) putting the mixture into an internal mixer, raising the temperature in the internal mixer to 125-plus 135 ℃, carrying out internal mixing for 6-7min, standing and curing for 30-40h, controlling the rubber temperature below 100 ℃ for rubber discharge, carrying out sheet discharging, cooling and standing and curing on an open rubber mixing mill to obtain the rubber air duct gasket, wherein the standing and curing temperature in the step C is controlled to 110-plus 120 ℃.
To verify the performance of the duct gaskets prepared in each example, the duct gasket test specimens prepared in each example were subjected to performance testing, with the results shown in table 1:
| rate of change of tensile strength | Rate of change of tear rate | Shore hardness | Ozone resistance | Flame retardant properties | |
| Example 1 | -13.1% | -12.6% | 75 | No crack under the condition of 50PPhm/40 ℃ for 70h | The oxygen index is 29, and the combustion performance is UL94V-0 grade |
| Example 2 | -11.9% | -13.1% | 73 | No crack under the condition of 50PPhm/40 ℃ for 70h | The oxygen index is 28, and the combustion performance is UL94V-1 grade |
| Example 3 | -14.1% | -11.2% | 78 | No crack under the condition of 50PPhm/40 ℃ for 70h | The oxygen index is 31, and the combustion performance is UL94V-0 grade |
The table 1 shows that the air duct gasket has excellent flame retardant, ozone resistant and aging resistant performances.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket is characterized by comprising the following raw materials in parts by weight: 20-30 parts of silicon rubber, 1-5 parts of nano graphite sheet, 10-15 parts of alumina powder, 1-3 parts of argil, 7-12 parts of diphenyl terephthalate, 5-10 parts of plasticizer, 6-8 parts of vulcanizing agent, 5-10 parts of nano silicon dioxide, 2-6 parts of quartz fiber, 15-20 parts of polyester fiber, 5-8 parts of zinc oxide and 10-20 parts of titanium dioxide.
2. The environment-friendly, flame-retardant, ozone-resistant and anti-aging marine rubber air duct gasket according to claim 1, wherein the graphite nanoplatelets have a thickness of 50 nm to 100nm and a diameter of 5 μm to 10 μm.
3. The environment-friendly, flame-retardant, ozone-resistant and anti-aging marine rubber air duct gasket according to claim 2, wherein the particle size of the alumina powder is less than or equal to 100 μm spherical alumina particles.
4. The preparation method of the environment-friendly, flame-retardant, ozone-resistant and anti-aging marine rubber air duct gasket as claimed in claim 1, characterized by comprising the following steps:
a. preparing materials:
adding silicon rubber, nano graphite sheets, alumina powder and argil into a mixing roll, and mixing for 17-23 minutes at 130 ℃ to obtain rubber raw stock A;
adding silicon rubber, diphenyl terephthalate, a plasticizer and a vulcanizing agent into a mixing roll, and mixing for 20-25 minutes at 130 ℃ to obtain rubber raw stock B;
adding silicon rubber, nano silicon dioxide, quartz fiber, hard ester fiber, zinc oxide and titanium dioxide into a mixing roll, and mixing for 15-30 minutes at 130 ℃ to obtain rubber raw stock C;
b. stirring:
pouring the rubber raw stock A, the rubber raw stock B and the rubber raw stock C into a stirring device, and fully and uniformly stirring to obtain a mixture;
c. banburying and forming:
and (3) putting the mixture into an internal mixer, raising the temperature in the internal mixer to 125-135 ℃, carrying out internal mixing for 6-7min, standing and curing for 30-40h, controlling the rubber temperature to be below 100 ℃, discharging rubber, carrying out sheet discharging on an open rubber mixing mill, cooling and standing and curing to obtain the rubber air duct gasket.
5. The preparation method of the environment-friendly, flame-retardant, ozone-resistant and anti-aging marine rubber air duct gasket as claimed in claim 1, wherein the stirring time in the step b is 30-40 min.
6. The preparation method of the environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket as claimed in claim 1, wherein the standing curing temperature in the step c is controlled at 110-120 ℃.
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| CN202010933645.6A CN112029286A (en) | 2020-09-08 | 2020-09-08 | Environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket and preparation method thereof |
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| CN202010933645.6A CN112029286A (en) | 2020-09-08 | 2020-09-08 | Environment-friendly flame-retardant ozone-resistant anti-aging marine rubber air duct gasket and preparation method thereof |
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