CN115232370B - Rubber sealing material for vehicle and preparation method thereof - Google Patents
Rubber sealing material for vehicle and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of rubber materials, in particular to a rubber sealing material for a vehicle and a preparation method thereof. The rubber sealing material for the vehicle consists of the following raw materials in parts by weight: 50-70 parts of xanthan gum, 30-50 parts of nitrile rubber, 1-5 parts of stearic acid, 1-3 parts of an anti-aging agent, 2-4 parts of zinc oxide, 55-65 parts of carbon black, 2-4 parts of a plasticizer, 0.5-2 parts of a vulcanizing agent, 0.2-0.4 part of a vulcanization accelerator, 3-8 parts of a silane coupling agent and 0.6-1 part of vanadium-aluminum carbon. According to the invention, the max-phase metal vanadium aluminum carbon is added, so that the hardness, tensile strength and elongation at break of the rubber sealing material can be effectively improved, and meanwhile, the oil resistance, high temperature resistance and corrosion resistance of the rubber sealing material are improved to a certain extent, so that the rubber sealing material is suitable for vehicle parts such as calipers, vehicle doors and vehicle lamps.
Description
Technical Field
The invention relates to the technical field of rubber materials, in particular to a rubber sealing material for a vehicle and a preparation method thereof.
Background
The automobile sealing material is one of important parts of an automobile, is widely used for the parts of doors, windows, automobile bodies, seats, skylights, engine cases, trunk and the like, and has the important functions of water resistance, sealing, sound insulation, dust prevention, freeze prevention, shock absorption, heat preservation and energy conservation. It must have very strong tensile strength, good elasticity, and also relatively good high temperature resistance and ageing resistance. The existing rubber sealing material for automobiles has poor fatigue resistance.
Butyl rubber has the advantages of excellent heat resistance, acid and alkali resistance, excellent air tightness, electric insulation property and the like, and is widely applied to industries such as automobile industry, aerospace, electronic communication, instrument and meter systems, building industry, hydraulic engineering and the like. In particular, the present invention is applied to the field of automotive sealing materials, however, along with the improvement of life quality and the enhancement of environmental awareness, the requirements of people on reducing the temperature feeling and noise of driving environment are increasing, so that development of an automotive sealing material with excellent comprehensive performance, particularly excellent sealing performance, heat insulation performance and sound absorption performance is needed to meet the latest requirements.
Based on the above situation, the invention provides a rubber sealing material for a vehicle and a preparation method thereof.
Disclosure of Invention
The invention aims to provide a rubber sealing material for a vehicle and a preparation method thereof.
In order to achieve the above object, the invention provides a rubber sealing material for vehicles, which is composed of the following raw materials in parts by weight: 50-70 parts of xanthan gum, 30-50 parts of nitrile rubber, 1-5 parts of stearic acid, 1-3 parts of an anti-aging agent, 2-4 parts of zinc oxide, 55-65 parts of carbon black, 2-4 parts of a plasticizer, 0.5-2 parts of a vulcanizing agent, 0.2-0.4 part of a vulcanization accelerator, 3-8 parts of a silane coupling agent and 0.6-1 part of vanadium-aluminum carbon.
Preferably, the stearic acid is stearic acid SA1801.
Preferably, the anti-aging agent is selected from one of anti-aging agents IPPD, anti-aging agent H, anti-aging agent 264, and anti-aging agent 445.
Preferably, the content of the zinc oxide is more than or equal to 99.7%.
Preferably, the carbon black is selected from one or a combination of more than two of carbon black N2200, carbon black N330, carbon black N550, carbon black N660 and carbon black N990.
Preferably, the plasticizer is one or more of dioctyl phthalate, dibutyl phthalate, dioctyl terephthalate and epoxidized soybean oil.
Preferably, the vulcanizing agent is a combination of cyanuric acid and elemental sulfur.
Preferably, the vulcanization accelerator is selected from one of thiazoles, sulfenamides, thiurams and thiocarboxylates.
Preferably, the silane coupling agent is selected from one of KH550, KH560, KH570, KH590, si-69 and Si-75.
Preferably, the vanadium aluminum carbon (V 2 AlC) is 300-400 meshes.
The invention also provides a preparation method of the rubber sealing material for the vehicle, which comprises the following steps:
(1) Mixing vanadium-aluminum-carbon with water according to the mass ratio (1 g: 10-15 ml), and performing ultrasonic dispersion for 20-30 min under the power of 100-120W to obtain a vanadium-aluminum-carbon solution;
(2) Adding a silane coupling agent and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to be 85-90 ℃ and the rotating speed to be 300-350 rpm, stirring and mixing for 30-40 min, then adding xanthan gum, and continuously stirring and mixing for 2.0-2.5 h to obtain a mixture of the xanthan gum;
(3) Raising the temperature of a high-speed mixer to 100-105 ℃, sequentially adding the xanthan gum mixture, the nitrile rubber, the stearic acid, the anti-aging agent, the zinc oxide, the carbon black, the plasticizer, the vulcanization accelerator and the vulcanizing agent obtained in the step (2), stirring and mixing for 1.0-1.5 h at the rotating speed of 200-250 rpm, and standing and aging for 4.5-5 h to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
In one embodiment, the method for preparing the rubber sealing material for the vehicle comprises the following steps:
(1) Mixing vanadium-aluminum-carbon with water according to the mass ratio (1 g: 10-15 ml), and performing ultrasonic dispersion for 20-30 min under the power of 100-120W to obtain a vanadium-aluminum-carbon solution;
(2) Adding a silane coupling agent KH590 and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to be 85-90 ℃ and the rotating speed to be 300-350 rpm, stirring and mixing for 30-40 min, then adding xanthan gum, and continuously stirring and mixing for 2.0-2.5 h to obtain a xanthan gum mixture;
(3) Raising the temperature of a high-speed mixer to 100-105 ℃, sequentially adding the xanthan gum mixture obtained in the step (2), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethylthiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.0-1.5 h at the rotating speed of 200-250 rpm, and standing and aging for 4.5-5 h to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the max-phase metal vanadium aluminum carbon is added, so that the hardness, tensile strength and elongation at break of the rubber sealing material can be effectively improved, and meanwhile, the oil resistance, high temperature resistance and corrosion resistance of the rubber sealing material are improved to a certain extent, so that the rubber sealing material is suitable for vehicle parts such as calipers, vehicle doors and vehicle lamps.
2. The raw materials of the invention are abundant in China and have proper price, so that the large-scale production of the invention has no high cost limit; meanwhile, the preparation method is simple, the overall production cost is low, and the method is beneficial to industrial mass production.
Detailed Description
Example 1
The specific raw materials are weighed according to table 1, and the preparation steps are as follows:
(1) Mixing vanadium-aluminum-carbon with water according to the mass ratio (1 g:10 ml), and performing ultrasonic dispersion for 30min under the power of 100W to obtain a vanadium-aluminum-carbon solution;
(2) Adding a silane coupling agent KH590 and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to be 85 ℃, and the rotating speed to be 300rpm, stirring and mixing for 40min, then adding xanthan gum, and continuously stirring and mixing for 2.5h to obtain a xanthan gum mixture;
(3) Raising the temperature of a high-speed mixer to 100 ℃, sequentially adding the xanthan gum mixture obtained in the step (2), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethyl thiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.5 hours at the rotating speed of 200rpm, and standing and aging for 5 hours to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
Example 2
The specific raw materials are weighed according to table 1, and the preparation steps are as follows:
(1) Mixing vanadium-aluminum-carbon with water according to the mass ratio (1 g:15 ml), and performing ultrasonic dispersion for 20min under the power of 120W to obtain a vanadium-aluminum-carbon solution;
(2) Adding a silane coupling agent KH590 and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to 90 ℃, and the rotating speed to 300rpm, stirring and mixing for 30min, then adding xanthan gum, and continuously stirring and mixing for 2.0h to obtain a xanthan gum mixture;
(3) Raising the temperature of a high-speed mixer to 105 ℃, sequentially adding the xanthan gum mixture obtained in the step (2), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethyl thiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.0h at the rotating speed of 200rpm, and standing and aging for 4.5h to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
Example 3
The specific raw materials are weighed according to table 1, and the preparation steps are as follows:
(1) Mixing vanadium-aluminum-carbon with water according to the mass ratio (1 g:15 ml), and performing ultrasonic dispersion for 30min under the power of 120W to obtain a vanadium-aluminum-carbon solution;
(2) Adding a silane coupling agent KH590 and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to 90 ℃, and the rotating speed to 350rpm, stirring and mixing for 40min, then adding xanthan gum, and continuously stirring and mixing for 2.5h to obtain a xanthan gum mixture;
(3) Raising the temperature of a high-speed mixer to 105 ℃, sequentially adding the xanthan gum mixture obtained in the step (2), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethyl thiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.5 hours at the rotating speed of 250rpm, and standing and aging for 5 hours to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
Comparative example 1
Specific raw materials were weighed according to table 1, and the procedure for the preparation was as follows, except that example 3 did not contain the silane coupling agent KH 590:
(1) Mixing vanadium-aluminum-carbon with water according to the mass ratio (1 g:15 ml), and performing ultrasonic dispersion for 30min under the power of 120W to obtain a vanadium-aluminum-carbon solution;
(2) Adding the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to 90 ℃, and stirring and mixing at the rotating speed of 350rpm for 40min, then adding xanthan gum, and continuing stirring and mixing for 2.5h to obtain a xanthan gum mixture;
(3) Raising the temperature of a high-speed mixer to 105 ℃, sequentially adding the xanthan gum mixture obtained in the step (2), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethyl thiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.5 hours at the rotating speed of 250rpm, and standing and aging for 5 hours to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
Comparative example 2
Specific raw materials were weighed according to table 1, and unlike example 3, they did not contain vanadium aluminum carbon, and were prepared as follows:
(1) Adding a silane coupling agent KH590 into a high-speed mixer, setting the temperature to 90 ℃ and the rotating speed to 350rpm, stirring and mixing for 40min, then adding xanthan gum, and continuing stirring and mixing for 2.5h to obtain a xanthan gum mixture;
(2) Raising the temperature of a high-speed mixer to 105 ℃, sequentially adding the xanthan gum mixture obtained in the step (1), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethyl thiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.5 hours at the rotating speed of 250rpm, and standing and aging for 5 hours to obtain a vulcanized mixed material;
(3) Adding the vulcanized mixed material obtained in the step (2) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
Comparative example 3
Specific raw materials were weighed according to table 1, and the procedure was as follows, except that the materials did not contain vanadium-aluminum-carbon and silane coupling agent, as in example 3:
(1) Adding xanthan gum into a high-speed mixer, setting the temperature to 90 ℃ and the rotating speed to 350rpm, and stirring and mixing for 3.0h to obtain a xanthan gum mixture;
(2) Raising the temperature of a high-speed mixer to 105 ℃, sequentially adding the xanthan gum mixture obtained in the step (1), the nitrile rubber JSR230, the stearic acid SA1801, the anti-aging agent 445, the zinc oxide, the carbon black N550, the dibutyl phthalate, the tetramethyl thiuram disulfide, the cyanuric acid and the sulfur powder, stirring and mixing for 1.5 hours at the rotating speed of 250rpm, and standing and aging for 5 hours to obtain a vulcanized mixed material;
(3) Adding the vulcanized mixed material obtained in the step (2) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
TABLE 1
Example 4 Performance test
The sealing materials prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to hardness, tensile strength, elongation at break, oil resistance test, compression set test, respectively. Shore A hardness test reference standard GB/T531.1-2008; tensile Strength and elongation at Break test reference Standard GB/T528-2009 "determination of tensile stress Strain Performance of vulcanized rubber or thermoplastic rubber"; compression set test refers to GB/T7759.1-2015 "determination of compression set of vulcanized rubber or thermoplastic rubber" 150 ℃ for 96 hours; oil resistance test according to GB/T1690-2010 method for testing liquid resistance of vulcanized rubber or thermoplastic rubber, the test temperature is 150 ℃ and the sample is soaked in 3# standard oil for 96 hours to test the quality change. The evaluation results are shown in Table 2.
TABLE 2 Performance test results
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. The automobile rubber sealing material is characterized by comprising the following raw materials in parts by weight: 50-70 parts of xanthan gum, 30-50 parts of nitrile rubber, 1-5 parts of stearic acid, 1-3 parts of an anti-aging agent, 2-4 parts of zinc oxide, 55-65 parts of carbon black, 2-4 parts of a plasticizer, 0.5-2 parts of a vulcanizing agent, 0.2-0.4 part of a vulcanization accelerator, 3-8 parts of a silane coupling agent and 0.6-1 part of vanadium-aluminum carbon;
the stearic acid is stearic acid SA1801;
the anti-aging agent is selected from one of an anti-aging agent IPPD, an anti-aging agent H, an anti-aging agent 264 and an anti-aging agent 445;
one or more than two of the plasticizers of dioctyl phthalate, dibutyl phthalate, dioctyl terephthalate and epoxidized soybean oil;
the vulcanizing agent is a combination of cyanuric acid and elemental sulfur;
the vulcanization accelerator is selected from one of thiazoles, sulfenamides, thiurams and thiocarboxylates;
the silane coupling agent is KH590; the granularity of the vanadium-aluminum-carbon is 300-400 meshes;
the preparation method comprises the following steps:
(1) Mixing vanadium, aluminum and carbon with water according to the mass ratio of 1g to 10-15 ml, and performing ultrasonic dispersion for 20-30 min under the power of 100-120W to obtain a vanadium, aluminum and carbon solution;
(2) Adding a silane coupling agent and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to be 85-90 ℃ and the rotating speed to be 300-350 rpm, stirring and mixing for 30-40 min, then adding xanthan gum, and continuously stirring and mixing for 2.0-2.5 h to obtain a mixture of the xanthan gum;
(3) Raising the temperature of a high-speed mixer to 100-105 ℃, sequentially adding the xanthan gum mixture, the nitrile rubber, the stearic acid, the anti-aging agent, the zinc oxide, the carbon black, the plasticizer, the vulcanization accelerator and the vulcanizing agent obtained in the step (2), stirring and mixing for 1.0-1.5 h at the rotating speed of 200-250 rpm, and standing and aging for 4.5-5 h to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
2. The rubber sealing material for vehicles according to claim 1, wherein the content of zinc oxide is not less than 99.7%.
3. The rubber sealing material for a vehicle according to claim 1, wherein the carbon black is selected from one or a combination of two or more of carbon black N2200, carbon black N330, carbon black N550, carbon black N660, and carbon black N990.
4. A method for preparing the rubber sealing material for vehicles according to any one of claims 1 to 3, characterized in that the method consists of the following steps:
(1) Mixing vanadium, aluminum and carbon with water according to the mass ratio of 1g to 10-15 ml, and performing ultrasonic dispersion for 20-30 min under the power of 100-120W to obtain a vanadium, aluminum and carbon solution;
(2) Adding a silane coupling agent and the vanadium-aluminum-carbon solution obtained in the step (1) into a high-speed mixer, setting the temperature to be 85-90 ℃ and the rotating speed to be 300-350 rpm, stirring and mixing for 30-40 min, then adding xanthan gum, and continuously stirring and mixing for 2.0-2.5 h to obtain a mixture of the xanthan gum;
(3) Raising the temperature of a high-speed mixer to 100-105 ℃, sequentially adding the xanthan gum mixture, the nitrile rubber, the stearic acid, the anti-aging agent, the zinc oxide, the carbon black, the plasticizer, the vulcanization accelerator and the vulcanizing agent obtained in the step (2), stirring and mixing for 1.0-1.5 h at the rotating speed of 200-250 rpm, and standing and aging for 4.5-5 h to obtain a vulcanized mixed material;
(4) Adding the vulcanized mixed material obtained in the step (3) into a screw extruder, carrying out melt extrusion granulation, wherein the extrusion temperature is 220 ℃, the rotation speed of the extruder is 200r/min, drying, and then carrying out extrusion molding.
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| CN112409936A (en) * | 2020-11-11 | 2021-02-26 | 湖南工程学院 | Low-frequency magnetic dielectric composite wave-absorbing patch and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10036402B2 (en) * | 2014-05-14 | 2018-07-31 | United Technologies Corporation | Max phase reinforced polymer matrix composite abradables with enhanced thermal conductivity |
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2022
- 2022-08-03 CN CN202210928612.1A patent/CN115232370B/en active Active
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|---|---|---|---|---|
| CN1289359A (en) * | 1998-01-09 | 2001-03-28 | 达特韦勒橡胶塑料股份公司 | Water-swellable sealing material |
| CN104592589A (en) * | 2015-01-01 | 2015-05-06 | 宁波帝杨电子科技有限公司 | Nitrile rubber/polyvinyl chloride composite material and preparation method thereof |
| CN110799577A (en) * | 2017-06-30 | 2020-02-14 | 杜邦工业生物科学美国有限责任公司 | Polysaccharide-elastomer masterbatch composition |
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