CN111320823A - Wear-resistant anti-aging automobile sealing strip and preparation method thereof - Google Patents
Wear-resistant anti-aging automobile sealing strip and preparation method thereof Download PDFInfo
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Abstract
The invention provides a wear-resistant anti-aging automobile sealing strip which comprises a sealing strip supporting body and a wear-resistant anti-aging layer; the sealing strip supporting body comprises the following raw materials in parts by weight: 100-120 parts of ethylene propylene diene monomer, 10-20 parts of sodium polyacrylate, 10-28 parts of glass fiber, 10-25 parts of carbon fiber reinforced polyurethane, 2-6 parts of calcium carbonate, 1-3 parts of zinc oxide, 15-30 parts of isopropanol, 2-4 parts of stearic acid, 2-5 parts of nano silicon dioxide, 0.1-1 part of anti-aging agent, 1-3 parts of compatilizer, 0.1-1 part of accelerator, 0.5-3 parts of silane coupling agent and 1-3 parts of sulfur powder; the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 15-20 parts of superfine polytetrafluoroethylene, 2-7 parts of alumina, 7-10 parts of sodium polystyrene sulfonate, 45-50 parts of solvent, 1-3 parts of anti-aging agent and 0.5-1 part of inorganic pigment. The automobile sealing strip is wear-resistant and ageing-resistant, and has the advantages of simple preparation method and low cost.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a wear-resistant anti-aging automobile sealing strip and a preparation method thereof.
Background
The automobile sealing strip is one of important parts of an automobile, has the functions of filling various intermittences and gaps among automobile body components, has the functions of shock absorption, water prevention, dust prevention, sound insulation, decoration and the like, improves the comfort of driving experience and protects the automobile body. According to the classification of material types, the sealing strip can be divided into a rubber sealing strip, a plastic sealing strip and a thermoplastic elastomer sealing strip. The rubber sealing strip of the automobile is easy to deform, age and the like in the long-term use process, and is worn by repeated use friction, so that the sealing performance, the damping performance and the service life of the sealing strip are seriously influenced by the phenomena.
Therefore, with the continuous development of science and technology, the technical requirements of the automobile industry on the automobile sealing strip are higher and higher, the automobile sealing strip is required to have high sealing performance, and the product is also required to have the performances of wear resistance, ageing resistance, flame retardance and the like, however, the existing automobile sealing strip cannot effectively overcome the requirement that the automobile sealing strip is damaged, deformed and aged after being used for a long time.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the wear-resistant anti-aging automobile sealing strip which has the characteristics of good sealing performance, excellent wear resistance, ageing resistance, flame retardance, corrosion resistance and the like, can effectively reduce abnormal noise of friction, reduce sliding friction resistance and prolong the service life; the preparation method is simple and low in cost.
The technical scheme adopted by the invention is as follows: the invention provides a wear-resistant anti-aging automobile sealing strip which comprises a sealing strip supporting body and a wear-resistant anti-aging layer; the thickness of the wear-resistant anti-aging layer is about 0.5-2 mm.
The sealing strip supporting body comprises the following raw materials in parts by weight: 100-120 parts of ethylene propylene diene monomer, 10-20 parts of sodium polyacrylate, 10-28 parts of glass fiber, 10-25 parts of carbon fiber reinforced polyurethane, 2-6 parts of calcium carbonate, 1-3 parts of zinc oxide, 15-30 parts of isopropanol, 2-4 parts of stearic acid, 2-5 parts of nano silicon dioxide, 0.1-1 part of anti-aging agent, 1-3 parts of compatilizer, 0.1-1 part of accelerator, 0.5-3 parts of silane coupling agent and 1-3 parts of sulfur powder;
the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 15-20 parts of superfine polytetrafluoroethylene, 2-7 parts of alumina, 7-10 parts of sodium polystyrene sulfonate, 45-50 parts of solvent, 1-3 parts of anti-aging agent and 0.5-1 part of inorganic pigment.
Further, the accelerator is at least one of accelerator CBS, accelerator DM, accelerator TBBS, accelerator NOBS, accelerator TMTD and accelerator NA-22.
The antioxidant is at least one of antioxidant RD, antioxidant 124, antioxidant 4020, antioxidant MB, antioxidant ZMBI and antioxidant NBC.
Further, the flame retardant is at least one of antimony flame retardant, phosphorus flame retardant, boron flame retardant and aluminum hydroxide.
Further, the preparation method of the automobile sealing strip comprises the following steps: (1) preparing a sealing strip support body; (2) carrying out plasma surface treatment on the sealing strip support body obtained in the step (1); (3) immediately spraying the sealing strip support subjected to the plasma surface treatment in the step (2) on the surface of the sealing strip support by using a spray gun; (4) and after spraying, solidifying in a solidifying tank, cooling in a cooling water tank, and air-drying in an air compressor to finally obtain the wear-resistant and anti-aging automobile sealing strip.
Further, the preparation method of the sealing strip support body in the step (1) comprises the following steps: a. weighing ethylene propylene diene monomer, sodium polyacrylate, glass fiber, carbon fiber reinforced polyurethane, calcium carbonate, isopropanol, stearic acid, nano silicon dioxide, an anti-aging agent, a compatilizer, an accelerator, a silane coupling agent and sulfur powder according to the weight part ratio of the formula, adding the weighed materials into a high-speed mixer, and stirring and mixing the materials uniformly at the set rotating speed of 200-400 rpm; b. b, transferring the material obtained in the step a from a high-speed mixer to a double-screw extruder, extruding and granulating, setting the granulation temperature to be 180-240 ℃, setting the rotating speed of a host machine to be 200-600 rpm, simultaneously adding paraffin oil into the double screws according to the formula proportion to mix with the molten material, and extruding and granulating to obtain master batches; c. b, putting the master batch obtained in the step b into a die of an ultrahigh-temperature curing tank for extrusion curing molding to obtain a semi-finished product of the sealing strip support body; d. c, demolding the semi-finished product of the sealing strip support body after curing and forming in the step c, and then moving the semi-finished product into a microwave groove for microwave vulcanization, wherein the vulcanization temperature is 240 ℃; e. and d, solidifying the sealing strip support body after the vulcanization in the step d in a solidification tank, cooling the sealing strip support body in a cooling water tank, and then placing the sealing strip support body on a tractor for traction to obtain the sealing strip support body.
Further, the plasma surface treatment method in the step (2) is that the sealing strip supporting body is placed in a cavity of the plasma emitter, vacuum pumping is carried out, and plasma treatment is carried out for 1 min.
Furthermore, the pressure of the extrusion forming in the step c is 0.5-1.0 MPa.
Further, the spraying of the wear-resistant and anti-aging layer in the step (3) comprises the following steps: weighing the following raw materials in parts by weight: mixing superfine polytetrafluoroethylene, alumina, sodium polystyrene sulfonate, an anti-aging agent and an inorganic pigment with a solvent, performing ultrasonic treatment to form a stable dispersion liquid, and then adding an ethyl acrylate adhesive accounting for 0.3-1% of the dispersion liquid; and (3) uniformly spraying the obtained dispersion on the surface of the sealing strip support body by using a spray gun with double nozzles, taking high-pressure air as carrier gas and inert gas as protective gas for preventing oxidation to form a uniform and compact wear-resistant anti-aging layer.
The invention has the beneficial effects that:
(1) the sealing strip support body of the automobile sealing strip adopts the ethylene propylene diene monomer as a rubber main body material, and the outer layer is sprayed with the wear-resistant anti-aging layer, so that the performances of wear resistance, aging resistance, oil resistance, corrosion resistance and the like of the sealing strip are effectively improved, abnormal sound of friction is prevented (reduced), the sliding friction resistance is reduced, and the service life is prolonged; the preparation method is simple and low in cost.
(2) According to the automobile sealing strip, the carbon fiber reinforced polyurethane and the nano silicon dioxide are added in the formula of the support body, and are effectively fused with the ethylene propylene diene monomer rubber, so that the comprehensive performance of the sealing strip can be effectively enhanced under the synergistic effect; the formula of the support body of the automobile sealing strip is also added with calcium carbonate, zinc oxide, an anti-aging agent, a compatilizer, an accelerator and a silane coupling agent, and the support body can be effectively fused with ethylene propylene diene monomer rubber and has good flame retardant property.
(3) The wear-resistant anti-aging layer of the automobile sealing strip is sprayed by a spray gun, the process is simple, the coating is uniform and compact, and the wear-resistant anti-aging layer is wear-resistant and corrosion-resistant.
Detailed Description
The invention will be further elucidated by means of several specific examples, which are intended to be illustrative only and not limiting.
Example 1:
the wear-resistant anti-aging automobile sealing strip comprises a sealing strip supporting body and a wear-resistant anti-aging layer; the thickness of the wear-resistant anti-aging layer is about 1 mm.
The sealing strip supporting body comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 15 parts of sodium polyacrylate, 10 parts of glass fiber, 20 parts of carbon fiber reinforced polyurethane, 6 parts of calcium carbonate, 3 parts of zinc oxide, 30 parts of isopropanol, 4 parts of stearic acid, 5 parts of nano silicon dioxide, 0.5 part of an anti-aging agent, 2 parts of a compatilizer, 0.5 part of an accelerator, 2 parts of a silane coupling agent and 3 parts of sulfur powder;
the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 20 parts of superfine polytetrafluoroethylene, 5 parts of alumina, 5 parts of sodium polystyrene sulfonate, 45 parts of solvent, 1 part of anti-aging agent and 0.5 part of inorganic pigment.
Further, the accelerators are accelerator CBS and accelerator DM.
Further, the anti-aging agent is an anti-aging agent RD and an anti-aging agent MB.
Further, the flame retardant is aluminum hydroxide.
Further, the preparation method of the automobile sealing strip comprises the following steps: (1) preparing a sealing strip support body; (2) carrying out plasma surface treatment on the sealing strip support body obtained in the step (1); (3) immediately spraying the sealing strip support subjected to the plasma surface treatment in the step (2) on the surface of the sealing strip support by using a spray gun; (4) and after spraying, solidifying in a solidifying tank, cooling in a cooling water tank, and air-drying in an air compressor to finally obtain the wear-resistant and anti-aging automobile sealing strip.
Further, the preparation method of the sealing strip support body in the step (1) comprises the following steps: a. weighing ethylene propylene diene monomer, sodium polyacrylate, glass fiber, carbon fiber reinforced polyurethane, calcium carbonate, isopropanol, stearic acid, nano silicon dioxide, an anti-aging agent, a compatilizer, an accelerator, a silane coupling agent and sulfur powder according to the weight part ratio of the formula, adding the weighed materials into a high-speed mixer, and stirring and mixing the materials uniformly at the set rotating speed of 300 rpm; b. b, transferring the material in the step a from a high-speed mixer to a double-screw extruder, extruding and granulating, setting the granulation temperature to be 240 ℃, setting the rotating speed of a main machine to be 300rpm, simultaneously adding paraffin oil into the double screws according to the formula proportion to mix with the molten material, and extruding and granulating to obtain master batches; c. b, putting the master batch obtained in the step b into a die of an ultrahigh-temperature curing tank for extrusion curing molding to obtain a semi-finished product of the sealing strip support body; d. c, demolding the semi-finished product of the sealing strip support body after curing and forming in the step c, and then moving the semi-finished product into a microwave groove for microwave vulcanization, wherein the vulcanization temperature is 240 ℃; e. and d, solidifying the sealing strip support body after the vulcanization in the step d in a solidification tank, cooling the sealing strip support body in a cooling water tank, and then placing the sealing strip support body on a tractor for traction to obtain the sealing strip support body.
Further, the plasma surface treatment method in the step (2) is that the sealing strip supporting body is placed in a cavity of the plasma emitter, vacuum pumping is carried out, and plasma treatment is carried out for 1 min.
Further, the pressure of the extrusion forming in the step c is 0.8 MPa.
Further, the spraying of the wear-resistant and anti-aging layer in the step (3) comprises the following steps: weighing the following raw materials in parts by weight: mixing superfine polytetrafluoroethylene, alumina, sodium polystyrene sulfonate, an anti-aging agent and an inorganic pigment with a solvent, performing ultrasonic treatment to form a stable dispersion liquid, and then adding 0.3 percent of ethyl acrylate adhesive into the dispersion liquid; and (3) uniformly spraying the obtained dispersion on the surface of the sealing strip support body by using a spray gun with double nozzles, taking high-pressure air as carrier gas and inert gas as protective gas for preventing oxidation to form a uniform and compact wear-resistant anti-aging layer.
Further, the solvent is a mixed solvent of ionized water, ethanol and acetone, and the volume ratio is 1: 2: 1.
this embodiment is the best mode for carrying out the invention.
Example 2:
the wear-resistant anti-aging automobile sealing strip comprises a sealing strip supporting body and a wear-resistant anti-aging layer; the thickness of the wear-resistant and ageing-resistant layer is about 1.5 mm.
The sealing strip supporting body comprises the following raw materials in parts by weight: 110 parts of ethylene propylene diene monomer, 10 parts of sodium polyacrylate, 15 parts of glass fiber, 15 parts of carbon fiber reinforced polyurethane, 4 parts of calcium carbonate, 2 parts of zinc oxide, 15 parts of isopropanol, 3 parts of stearic acid, 4 parts of nano silicon dioxide, 0.8 part of anti-aging agent, 1 part of compatilizer, 0.8 part of accelerator, 1 part of silane coupling agent and 2 parts of sulfur powder;
the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 15 parts of superfine polytetrafluoroethylene, 2 parts of alumina, 7 parts of sodium polystyrene sulfonate, 50 parts of solvent, 2 parts of anti-aging agent and 1 part of inorganic pigment.
Further, the accelerator is an accelerator DM and an accelerator TBBS.
Further, the anti-aging agent is anti-aging agent RD and anti-aging agent 4020.
Further, the flame retardant is aluminum hydroxide.
Further, the preparation method of the automobile sealing strip comprises the following steps: (1) preparing a sealing strip support body; (2) carrying out plasma surface treatment on the sealing strip support body obtained in the step (1); (3) immediately spraying the sealing strip support subjected to the plasma surface treatment in the step (2) on the surface of the sealing strip support by using a spray gun; (4) and after spraying, solidifying in a solidifying tank, cooling in a cooling water tank, and air-drying in an air compressor to finally obtain the wear-resistant and anti-aging automobile sealing strip.
Further, the preparation method of the sealing strip support body in the step (1) comprises the following steps: a. weighing ethylene propylene diene monomer, sodium polyacrylate, glass fiber, carbon fiber reinforced polyurethane, calcium carbonate, isopropanol, stearic acid, nano silicon dioxide, an anti-aging agent, a compatilizer, an accelerator, a silane coupling agent and sulfur powder according to the weight part ratio of the formula, adding the weighed materials into a high-speed mixer, and stirring and mixing the materials uniformly at the set rotating speed of 200 rpm; b. b, transferring the material in the step a from a high-speed mixer to a double-screw extruder, extruding and granulating, setting the granulation temperature to be 200 ℃, setting the rotating speed of a host to be 400rpm, simultaneously adding paraffin oil into the double screws according to the formula proportion to mix with the molten material, and extruding and granulating to obtain master batches; c. b, putting the master batch obtained in the step b into a die of an ultrahigh-temperature curing tank for extrusion curing molding to obtain a semi-finished product of the sealing strip support body; d. c, demolding the semi-finished product of the sealing strip support body after curing and forming in the step c, and then moving the semi-finished product into a microwave groove for microwave vulcanization, wherein the vulcanization temperature is 240 ℃; e. and d, solidifying the sealing strip support body after the vulcanization in the step d in a solidification tank, cooling the sealing strip support body in a cooling water tank, and then placing the sealing strip support body on a tractor for traction to obtain the sealing strip support body.
Further, the plasma surface treatment method in the step (2) is that the sealing strip supporting body is placed in a cavity of the plasma emitter, vacuum pumping is carried out, and plasma treatment is carried out for 1 min.
Further, the pressure of the extrusion forming in the step c is 0.5 MPa.
Further, the spraying of the wear-resistant and anti-aging layer in the step (3) comprises the following steps: weighing the following raw materials in parts by weight: mixing superfine polytetrafluoroethylene, alumina, sodium polystyrene sulfonate, an anti-aging agent and an inorganic pigment with a solvent, performing ultrasonic treatment to form a stable dispersion liquid, and then adding 0.5 percent of ethyl acrylate adhesive into the dispersion liquid; and (3) uniformly spraying the obtained dispersion on the surface of the sealing strip support body by using a spray gun with double nozzles, taking high-pressure air as carrier gas and inert gas as protective gas for preventing oxidation to form a uniform and compact wear-resistant anti-aging layer.
Further, the solvent is a mixed solvent of ionized water, ethanol and acetone, and the volume ratio is 1: 2: 1.
example 3:
the wear-resistant anti-aging automobile sealing strip comprises a sealing strip supporting body and a wear-resistant anti-aging layer; the thickness of the wear-resistant and ageing-resistant layer is about 2 mm.
The sealing strip supporting body comprises the following raw materials in parts by weight: 120 parts of ethylene propylene diene monomer, 20 parts of sodium polyacrylate, 20 parts of glass fiber, 10 parts of carbon fiber reinforced polyurethane, 2 parts of calcium carbonate, 1 part of zinc oxide, 20 parts of isopropanol, 2 parts of stearic acid, 3 parts of nano silicon dioxide, 1 part of an anti-aging agent, 1 part of a compatilizer, 1 part of an accelerator, 3 parts of a silane coupling agent and 3 parts of sulfur powder;
the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 18 parts of superfine polytetrafluoroethylene, 7 parts of alumina, 10 parts of sodium polystyrene sulfonate, 45 parts of solvent, 3 parts of anti-aging agent and 0.5 part of inorganic pigment.
Further, the accelerator is an accelerator TMTD.
Further, the antioxidant is antioxidant 124 and antioxidant NBC.
Further, the flame retardant is aluminum hydroxide.
Further, the preparation method of the automobile sealing strip comprises the following steps: (1) preparing a sealing strip support body; (2) carrying out plasma surface treatment on the sealing strip support body obtained in the step (1); (3) immediately spraying the sealing strip support subjected to the plasma surface treatment in the step (2) on the surface of the sealing strip support by using a spray gun; (4) and after spraying, solidifying in a solidifying tank, cooling in a cooling water tank, and air-drying in an air compressor to finally obtain the wear-resistant and anti-aging automobile sealing strip.
Further, the preparation method of the sealing strip support body in the step (1) comprises the following steps: a. weighing ethylene propylene diene monomer, sodium polyacrylate, glass fiber, carbon fiber reinforced polyurethane, calcium carbonate, isopropanol, stearic acid, nano silicon dioxide, an anti-aging agent, a compatilizer, an accelerator, a silane coupling agent and sulfur powder according to the weight part ratio of the formula, adding the weighed materials into a high-speed mixer, and stirring and mixing the materials uniformly at the set rotating speed of 400 rpm; b. b, transferring the material in the step a from a high-speed mixer to a double-screw extruder, extruding and granulating, setting the granulation temperature to be 180 ℃, setting the rotating speed of a host to be 200rpm, simultaneously adding paraffin oil into the double screws according to the formula proportion to mix with the molten material, and extruding and granulating to obtain master batches; c. b, putting the master batch obtained in the step b into a die of an ultrahigh-temperature curing tank for extrusion curing molding to obtain a semi-finished product of the sealing strip support body; d. c, demolding the semi-finished product of the sealing strip support body after curing and forming in the step c, and then moving the semi-finished product into a microwave groove for microwave vulcanization, wherein the vulcanization temperature is 240 ℃; e. and d, solidifying the sealing strip support body after the vulcanization in the step d in a solidification tank, cooling the sealing strip support body in a cooling water tank, and then placing the sealing strip support body on a tractor for traction to obtain the sealing strip support body.
Further, the plasma surface treatment method in the step (2) is that the sealing strip supporting body is placed in a cavity of the plasma emitter, vacuum pumping is carried out, and plasma treatment is carried out for 1 min.
Further, the pressure of the extrusion forming in the step c is 1.0 MPa.
Further, the spraying of the wear-resistant and anti-aging layer in the step (3) comprises the following steps: weighing the following raw materials in parts by weight: mixing superfine polytetrafluoroethylene, alumina, sodium polystyrene sulfonate, an anti-aging agent and an inorganic pigment with a solvent, performing ultrasonic treatment to form a stable dispersion liquid, and then adding 0.8 percent of ethyl acrylate adhesive into the dispersion liquid; and (3) uniformly spraying the obtained dispersion on the surface of the sealing strip support body by using a spray gun with double nozzles, taking high-pressure air as carrier gas and inert gas as protective gas for preventing oxidation to form a uniform and compact wear-resistant anti-aging layer.
Further, the solvent is a mixed solvent of ionized water, ethanol and acetone, and the volume ratio is 1: 2: 1.
example 4
The wear-resistant anti-aging automobile sealing strip comprises a sealing strip supporting body and a wear-resistant anti-aging layer; the thickness of the wear-resistant and ageing-resistant layer is about 0.5 mm.
The sealing strip supporting body comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 10 parts of sodium polyacrylate, 28 parts of glass fiber, 25 parts of carbon fiber reinforced polyurethane, 5 parts of calcium carbonate, 3 parts of zinc oxide, 20 parts of isopropanol, 4 parts of stearic acid, 2 parts of nano silicon dioxide, 0.1 part of anti-aging agent, 3 parts of compatilizer, 0.1 part of accelerator, 0.5 part of silane coupling agent and 2 parts of sulfur powder;
the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 20 parts of superfine polytetrafluoroethylene, 5 parts of alumina, 8 parts of sodium polystyrene sulfonate, 50 parts of solvent, 1 part of anti-aging agent and 0.8 part of inorganic pigment.
Further, the accelerator is NOBS.
Furthermore, the anti-aging agent is anti-aging agent 4020 and anti-aging agent ZMBI.
Further, the flame retardant is aluminum hydroxide.
Further, the preparation method of the automobile sealing strip comprises the following steps: (1) preparing a sealing strip support body; (2) carrying out plasma surface treatment on the sealing strip support body obtained in the step (1); (3) immediately spraying the sealing strip support subjected to the plasma surface treatment in the step (2) on the surface of the sealing strip support by using a spray gun; (4) and after spraying, solidifying in a solidifying tank, cooling in a cooling water tank, and air-drying in an air compressor to finally obtain the wear-resistant and anti-aging automobile sealing strip.
Further, the preparation method of the sealing strip support body in the step (1) comprises the following steps: a. weighing ethylene propylene diene monomer, sodium polyacrylate, glass fiber, carbon fiber reinforced polyurethane, calcium carbonate, isopropanol, stearic acid, nano silicon dioxide, an anti-aging agent, a compatilizer, an accelerator, a silane coupling agent and sulfur powder according to the weight part ratio of the formula, adding the weighed materials into a high-speed mixer, and stirring and mixing the materials uniformly at the set rotating speed of 300 rpm; b. b, transferring the material in the step a from a high-speed mixer to a double-screw extruder, extruding and granulating, setting the granulation temperature to be 240 ℃, setting the rotating speed of a host machine to be 600rpm, simultaneously adding paraffin oil into the double screws according to the formula proportion to mix with the molten material, and extruding and granulating to obtain master batches; c. b, putting the master batch obtained in the step b into a die of an ultrahigh-temperature curing tank for extrusion curing molding to obtain a semi-finished product of the sealing strip support body; d. c, demolding the semi-finished product of the sealing strip support body after curing and forming in the step c, and then moving the semi-finished product into a microwave groove for microwave vulcanization, wherein the vulcanization temperature is 240 ℃; e. and d, solidifying the sealing strip support body after the vulcanization in the step d in a solidification tank, cooling the sealing strip support body in a cooling water tank, and then placing the sealing strip support body on a tractor for traction to obtain the sealing strip support body.
Further, the plasma surface treatment method in the step (2) is that the sealing strip supporting body is placed in a cavity of the plasma emitter, vacuum pumping is carried out, and plasma treatment is carried out for 1 min.
Further, the pressure of the extrusion forming in the step c is 0.5 MPa.
Further, the spraying of the wear-resistant and anti-aging layer in the step (3) comprises the following steps: weighing the following raw materials in parts by weight: mixing superfine polytetrafluoroethylene, alumina, sodium polystyrene sulfonate, an anti-aging agent and an inorganic pigment with a solvent, performing ultrasonic treatment to form a stable dispersion liquid, and then adding 1% ethyl acrylate adhesive into the dispersion liquid; and (3) uniformly spraying the obtained dispersion on the surface of the sealing strip support body by using a spray gun with double nozzles, taking high-pressure air as carrier gas and inert gas as protective gas for preventing oxidation to form a uniform and compact wear-resistant anti-aging layer.
Further, the solvent is a mixed solvent of ionized water, ethanol and acetone, and the volume ratio is 1: 2: 1.
the foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. The utility model provides a wear-resisting ageing resistance's automobile sealing strip which characterized in that: the wear-resistant anti-aging automobile sealing strip comprises a sealing strip supporting body and a wear-resistant anti-aging layer;
the sealing strip supporting body comprises the following raw materials in parts by weight: 100-120 parts of ethylene propylene diene monomer, 10-20 parts of sodium polyacrylate, 10-28 parts of glass fiber, 10-25 parts of carbon fiber reinforced polyurethane, 2-6 parts of calcium carbonate, 1-3 parts of zinc oxide, 15-30 parts of isopropanol, 2-4 parts of stearic acid, 2-5 parts of nano silicon dioxide, 0.1-1 part of anti-aging agent, 1-3 parts of compatilizer, 0.1-1 part of accelerator, 0.5-3 parts of silane coupling agent and 1-3 parts of sulfur powder;
the wear-resistant anti-aging layer comprises the following raw materials in parts by weight: 15-20 parts of superfine polytetrafluoroethylene, 2-7 parts of alumina, 7-10 parts of sodium polystyrene sulfonate, 45-50 parts of solvent, 1-3 parts of anti-aging agent and 0.5-1 part of inorganic pigment.
2. The abrasion-resistant anti-aging automobile sealing strip according to claim 1, characterized in that: the accelerator is at least one of accelerator CBS, accelerator DM, accelerator TBBS, accelerator NOBS, accelerator TMTD and accelerator NA-22.
3. The abrasion-resistant anti-aging automobile sealing strip according to claim 1, characterized in that: the anti-aging agent is at least one of anti-aging agent RD, anti-aging agent 124, anti-aging agent 4020, anti-aging agent MB, anti-aging agent ZMBI and anti-aging agent NBC.
4. The abrasion-resistant anti-aging automobile sealing strip according to claim 1, characterized in that: the flame retardant is at least one of antimony flame retardant, phosphorus flame retardant, boron flame retardant and aluminum hydroxide.
5. The abrasion-resistant anti-aging automobile sealing strip according to claim 1, characterized in that: the preparation method of the automobile sealing strip comprises the following steps: (1) preparing a sealing strip support body; (2) carrying out plasma surface treatment on the sealing strip support body obtained in the step (1); (3) immediately spraying the sealing strip support subjected to the plasma surface treatment in the step (2) on the surface of the sealing strip support by using a spray gun; (4) and after spraying, solidifying in a solidifying tank, cooling in a cooling water tank, and air-drying in an air compressor to finally obtain the wear-resistant and anti-aging automobile sealing strip.
6. The abrasion-resistant anti-aging automobile sealing strip according to claim 5, wherein: the preparation method of the sealing strip support in the step (1) comprises the following steps: a. weighing ethylene propylene diene monomer, sodium polyacrylate, glass fiber, carbon fiber reinforced polyurethane, calcium carbonate, isopropanol, stearic acid, nano silicon dioxide, an anti-aging agent, a compatilizer, an accelerator, a silane coupling agent and sulfur powder according to the weight part ratio of the formula, adding the weighed materials into a high-speed mixer, and stirring and mixing the materials uniformly at the set rotating speed of 200-400 rpm; b. b, transferring the material obtained in the step a from a high-speed mixer to a double-screw extruder, extruding and granulating, setting the granulation temperature to be 180-240 ℃, setting the rotating speed of a host machine to be 200-600 rpm, simultaneously adding paraffin oil into the double screws according to the formula proportion to mix with the molten material, and extruding and granulating to obtain master batches; c. b, putting the master batch obtained in the step b into a die of an ultrahigh-temperature curing tank for extrusion curing molding to obtain a semi-finished product of the sealing strip support body; d. c, demolding the semi-finished product of the sealing strip support body after curing and forming in the step c, and then moving the semi-finished product into a microwave groove for microwave vulcanization, wherein the vulcanization temperature is 240 ℃; e. and d, solidifying the sealing strip support body after the vulcanization in the step d in a solidification tank, cooling the sealing strip support body in a cooling water tank, and then placing the sealing strip support body on a tractor for traction to obtain the sealing strip support body.
7. The wear-resistant anti-aging automobile sealing strip and the preparation method thereof according to claim 5, are characterized in that: and (3) the plasma surface treatment method in the step (2) is that the sealing strip supporting body is placed in a cavity of the plasma emitter, the cavity is vacuumized, and plasma treatment is carried out for 1 min.
8. The wear-resistant anti-aging automobile sealing strip and the preparation method thereof according to claim 6, are characterized in that: and c, extruding, curing and molding under the pressure of 0.5-1.0 MPa.
9. The preparation method of the wear-resistant anti-aging automobile sealing strip according to claim 5, characterized by comprising the following steps: the spraying of the wear-resistant anti-aging layer in the step (3) comprises the following steps: weighing the following raw materials in parts by weight: mixing superfine polytetrafluoroethylene, alumina, sodium polystyrene sulfonate, an anti-aging agent and an inorganic pigment with a solvent, performing ultrasonic treatment to form a stable dispersion liquid, and then adding an ethyl acrylate adhesive accounting for 0.3-1% of the dispersion liquid; and (3) uniformly spraying the obtained dispersion on the surface of the sealing strip support body by using a spray gun with double nozzles, taking high-pressure air as carrier gas and inert gas as protective gas for preventing oxidation to form a uniform and compact wear-resistant anti-aging layer.
10. The preparation method of the wear-resistant anti-aging automobile sealing strip according to any one of claims 1 to 9, characterized by comprising the following steps: the thickness of the wear-resistant anti-aging layer is about 0.5-2 mm.
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| CN113004648A (en) * | 2021-03-04 | 2021-06-22 | 南京东润特种橡塑有限公司 | Composite water gate rubber sealing element and preparation method thereof |
| CN113801601A (en) * | 2021-09-27 | 2021-12-17 | 浙江福莱新材料股份有限公司 | Antistatic elastic anti-slip adhesive tape and preparation method thereof |
| CN115030645A (en) * | 2022-06-24 | 2022-09-09 | 佛山市南海易乐工程塑料有限公司 | Plastic heat insulation strip with good anti-oxidation effect and processing method |
| CN117511226A (en) * | 2023-11-29 | 2024-02-06 | 太仓恩力成密封件有限公司 | Preparation method of vehicle window glass sealing strip for inhibiting wind vibration effect |
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| CN113004648A (en) * | 2021-03-04 | 2021-06-22 | 南京东润特种橡塑有限公司 | Composite water gate rubber sealing element and preparation method thereof |
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