Low-pressure-change low-temperature-resistant butyronitrile material for unmanned aerial vehicle and preparation method

Abstract

The invention relates to the technical field of sealing materials, and discloses a preparation method of a low-pressure-change low-temperature-resistant butyronitrile material for an unmanned aerial vehicle, and the preparation method comprises the following steps: S1, mixing; s2, adding sulfur; and S3, discharging. The step S1 specifically comprises the following steps: accurately weighing the butyronitrile raw rubber according to a preset proportion, adding the butyronitrile raw rubber into an internal mixer, starting the internal mixer, mixing for about 60 seconds, adding the processing aid, the anti-aging agent and 1 / 3 of the plasticizer, mixing for about 60 seconds, adding 1 / 2 of the filler and 1 / 3 of the plasticizer for 60 seconds, cleaning, adding the rest of the filler and the plasticizer, continuously mixing for about 240 seconds, and cooling to room temperature. When the temperature reaches 140 DEG C, the materials are discharged to an open mill for sheet discharging, and preparation is completed. The prepared low-pressure-change low-temperature-resistant butyronitrile material improves the reliability of an unmanned aerial vehicle in a high-altitude ultralow-temperature environment, so that the sealing of the unmanned aerial vehicle in the high-altitude low-temperature environment is better guaranteed, and the unmanned aerial vehicle even can normally work under an extremely cold condition.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing materials, and in particular to a low-pressure variable low-temperature resistant nitrile material for unmanned aerial vehicles and a preparation method thereof. Background Art

[0002] With the development of the UAV industry and the diversity and complexity of environmental climate change, more stringent requirements for low-temperature reliability and longer service life are put forward for sealing materials. NBR materials are favored because of their good low-temperature resistance and good oil resistance. The low-temperature performance of ordinary NBR TR10 can only reach about -30℃. The low-temperature performance of low-temperature NBR can reach about -45℃, and the pressure change is poor, and the service life is short.

[0003] To this end, we proposed a low-pressure variable low-temperature resistant nitrile material and preparation method for drones to solve the problem. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a low-pressure variable low-temperature resistant nitrile material for drones and a preparation method thereof, which solves the problems in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a low-pressure variable low-temperature resistant nitrile material for unmanned aerial vehicles, comprising the following raw materials in proportion by weight: nitrile rubber: 50-100 parts, filler: 40-100 parts, plasticizer: 10-30 parts, antioxidant: 1-8 parts, processing aid: 1-5 parts, vulcanizer: 3-20 parts, accelerator: 3-20 parts.

[0008] Preferably, the nitrile rubber is brand Ruiong DN401L or JSR brand N250S.

[0009] Another technical problem to be solved by the present invention is to provide a method for preparing a low-pressure variable low-temperature resistant nitrile material for a drone, comprising the following steps:

[0010] S1: Mixing;

[0011] S2: Add sulfur;

[0012] S3: Discharging.

[0013] Preferably, step S1 is specifically as follows: accurately weigh the nitrile rubber according to a predetermined ratio, put it into an internal mixer, start the internal mixer, mix for about 60 seconds, then add the processing aid, antioxidant and 1 / 3 plasticizer and mix for about 60 seconds, then add 1 / 2 of the filler and 1 / 3 of the plasticizer for 60 seconds, and then add the remaining filler and plasticizer after cleaning and continue mixing for about 240 seconds. When the temperature reaches 140°C, discharge the material onto the open mixer to produce sheets to complete the preparation.

[0014] The step S2 is as follows: putting the unsulfurized rubber into an internal mixer, mixing for about 100 seconds, and discharging the material onto an open mixer until the temperature reaches 90°C to form sheets, thus completing the entire preparation process of the rubber.

[0015] Preferably, step S3 is specifically as follows: after the mixing is completed, the rubber material is discharged from the internal mixer, the rubber material is pressed into a film of a certain thickness by a tablet press, the pressed film is placed in a cooling area, and allowed to cool naturally or adopt an appropriate cooling method to reduce the temperature, and the quality of the cooled film is inspected, such as appearance, uniformity, etc., and the film is stored or subjected to subsequent processing as needed.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a low-pressure variable low-temperature resistant nitrile material for drones and a preparation method thereof, which has the following beneficial effects:

[0018] 1. The low-pressure variable low-temperature resistant nitrile material prepared by the present invention improves the reliability of the UAV in high-altitude ultra-low temperature environments, makes the sealing of the UAV in high-altitude low-temperature environments more secure, and enables it to work normally even in extremely cold conditions.

[0019] 2. The low-pressure transformer low-temperature resistant nitrile material prepared by the present invention has a long service life and a low price. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: A low-pressure variable low-temperature resistant nitrile material for drones, comprising the following raw materials in proportion by weight: nitrile rubber: 50 parts, filler: 40 parts, plasticizer: 10 parts, antioxidant: 1 part, processing aid: 1 part, vulcanizer: 3 parts, accelerator: 3 parts.

[0022] Another technical problem to be solved by the present invention is to provide a method for preparing a low-pressure variable low-temperature resistant nitrile material for a drone, comprising the following steps:

[0023] S1: Mixing: accurately weigh the nitrile rubber according to the predetermined ratio and put it into the internal mixer, start the internal mixer, mix for about 60 seconds, then add the processing aid, antioxidant and 1 / 3 plasticizer and mix for about 60 seconds, then add 1 / 2 of the filler and 1 / 3 of the plasticizer for 60 seconds, then add the remaining filler and plasticizer after cleaning and continue mixing for about 240 seconds, and when the temperature reaches 140°C, discharge it to the open mixer to produce sheets, and the preparation is completed;

[0024] S2: Sulfurization: The unsulfurized rubber compound is put into an internal mixer and mixed for about 100 seconds. When the temperature reaches 90°C, the rubber compound is discharged onto an open mixer to form sheets, thus completing the entire preparation process of the rubber compound.

[0025] S3: Discharging: After the mixing is completed, the rubber compound is discharged from the internal mixer, and the rubber compound is pressed into a film of a certain thickness by a tablet press. The pressed film is placed in a cooling area to cool naturally or adopt an appropriate cooling method to reduce the temperature. The quality of the cooled film is checked, such as appearance, uniformity, etc. The film is stored or processed later as needed.

[0026] Embodiment 2: A low-pressure variable low-temperature resistant nitrile material for drones, comprising the following raw materials in proportion by weight: nitrile rubber: 100 parts, filler: 100 parts, plasticizer: 30 parts, antioxidant: 8 parts, processing aid: 5 parts, vulcanizer: 20 parts, accelerator: 20 parts.

[0027] Another technical problem to be solved by the present invention is to provide a method for preparing a low-pressure variable low-temperature resistant nitrile material for a drone, comprising the following steps:

[0028] S1: Mixing: accurately weigh the nitrile rubber according to the predetermined ratio and put it into the internal mixer, start the internal mixer, mix for about 60 seconds, then add the processing aid, antioxidant and 1 / 3 plasticizer and mix for about 60 seconds, then add 1 / 2 of the filler and 1 / 3 of the plasticizer for 60 seconds, then add the remaining filler and plasticizer after cleaning and continue mixing for about 240 seconds, and when the temperature reaches 140°C, discharge it to the open mixer to produce sheets, and the preparation is completed;

[0029] S2: Sulfurization: The unsulfurized rubber compound is put into an internal mixer and mixed for about 100 seconds. When the temperature reaches 90°C, the rubber compound is discharged onto an open mixer to form sheets, thus completing the entire preparation process of the rubber compound.

[0030] S3: Discharging: After the mixing is completed, the rubber compound is discharged from the internal mixer, and the rubber compound is pressed into a film of a certain thickness by a tablet press. The pressed film is placed in a cooling area to cool naturally or adopt an appropriate cooling method to reduce the temperature. The quality of the cooled film is checked, such as appearance, uniformity, etc. The film is stored or processed later as needed.

[0031] Embodiment 3: A low-pressure variable low-temperature resistant nitrile material for drones, comprising the following raw materials in proportion by weight: nitrile rubber: 70 parts, filler: 60 parts, plasticizer: 20 parts, antioxidant: 5 parts, processing aid: 3 parts, vulcanizer: 15 parts, accelerator: 15 parts.

[0032] Another technical problem to be solved by the present invention is to provide a method for preparing a low-pressure variable low-temperature resistant nitrile material for a drone, comprising the following steps:

[0033] S1: Mixing: accurately weigh the nitrile rubber according to the predetermined ratio and put it into the internal mixer, start the internal mixer, mix for about 60 seconds, then add the processing aid, antioxidant and 1 / 3 plasticizer and mix for about 60 seconds, then add 1 / 2 of the filler and 1 / 3 of the plasticizer for 60 seconds, then add the remaining filler and plasticizer after cleaning and continue mixing for about 240 seconds, and when the temperature reaches 140°C, discharge it to the open mixer to produce sheets, and the preparation is completed;

[0034] S2: Sulfurization: The unsulfurized rubber compound is put into an internal mixer and mixed for about 100 seconds. When the temperature reaches 90°C, the rubber compound is discharged onto an open mixer to form sheets, thus completing the entire preparation process of the rubber compound.

[0035] S3: Discharging: After the mixing is completed, the rubber compound is discharged from the internal mixer, and the rubber compound is pressed into a film of a certain thickness by a tablet press. The pressed film is placed in a cooling area to cool naturally or adopt an appropriate cooling method to reduce the temperature. The quality of the cooled film is checked, such as appearance, uniformity, etc. The film is stored or processed later as needed.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-pressure variable low-temperature resistant nitrile material for drones, characterized in that: The invention comprises the following raw materials in proportion by weight: 50-100 parts of nitrile rubber, 40-100 parts of filler, 10-30 parts of plasticizer, 1-8 parts of antioxidant, 1-5 parts of processing aid, 3-20 parts of vulcanizer and 3-20 parts of accelerator.

2. The low-pressure variable low-temperature resistant nitrile material for drone according to claim 1, characterized in that: The nitrile rubber is brand DN401L of Ruiong or brand N250S of JSR.

3. A method for preparing a low-pressure variable low-temperature resistant nitrile material for drones, characterized in that: The following steps are involved: S1: Mixing; S2: Add sulfur; S3: Discharging.

4. The method for preparing a low-pressure variable low-temperature resistant nitrile material for drone according to claim 3, characterized in that: Step S1 specifically comprises the following steps: accurately weighing the nitrile rubber according to a predetermined ratio, and putting it into an internal mixer, starting the internal mixer, mixing for about 60 seconds, and then adding a processing aid, an antioxidant and 1 / 3 of a plasticizer and mixing for about 60 seconds, and then adding 1 / 2 of a filler and 1 / 3 of a plasticizer for 60 seconds, and then adding the remaining filler and plasticizer after cleaning and continuing to mix for about 240 seconds, and when the temperature reaches 140°C, unloading the material onto an open mixer to produce sheets, thereby completing the preparation.

5. The method for preparing a low-pressure variable low-temperature resistant nitrile material for drone according to claim 3, characterized in that: Step S2 specifically includes: putting the unsulphurized rubber material into an internal mixer, mixing for about 100 seconds, and discharging the material onto an open mixer until the temperature reaches 90° C., thereby completing the entire preparation process of the rubber material.

6. The method for preparing a low-pressure variable low-temperature resistant nitrile material for drones according to claim 3, characterized in that: Specifically, step S3 is as follows: after the mixing is completed, the rubber material is discharged from the internal mixer, the rubber material is pressed into a film of a certain thickness by a tablet press, the pressed film is placed in a cooling area, and allowed to cool naturally or adopt an appropriate cooling method to reduce the temperature, and the quality of the cooled film is inspected, such as appearance, uniformity, etc., and the film is stored or subjected to subsequent processing as needed.