Elastomeric hose and method of making same

Abstract

The application discloses an elastomer hose, which comprises the following raw materials in parts by weight: 30-40 parts of elastomer resin, 4-7 parts of modified nano zinc dioxide, 2-5 parts of whisker adjusting agent, 2-4 parts of vinyl silane, 1-3 parts of silane coupling agent, 2-4 parts of antioxidant, 2-4 parts of tert-butyl hydrogen peroxide and 1-3 parts of stearic acid. The elastomer hose is prepared by using the elastomer resin and raw materials such as the vinyl silane, the silane coupling agent and the antioxidant, and the modified nano zinc dioxide and the whisker adjusting agent are added to realize the synergistic effect, so that the antibacterial property, the strength performance, the heat resistance, the acid corrosion resistance and the stability of the product are improved.

Description

Technical Field

[0001] This invention relates to the field of hose technology, and more specifically to an elastomer hose and its preparation method. Background Technology

[0002] With social development and the advancement of science and technology, hoses made of polymer materials are widely used in various fields such as automobiles, home appliances, and gas and liquid transportation systems.

[0003] Existing hoses have poor antibacterial durability and strength performance, making it difficult to achieve coordinated improvement in antibacterial and strength performance. Furthermore, their poor heat resistance and acid corrosion resistance further limit the product's efficiency. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the purpose of this invention is to provide an elastomer hose and its preparation method to solve the problems mentioned in the background art.

[0005] The present invention solves the technical problem by adopting the following technical solution: This invention provides an elastomer hose, comprising the following raw materials in parts by weight: 30-40 parts elastomer resin, 4-7 parts modified nano zinc dioxide, 2-5 parts whisker regulator, 2-4 parts vinyl silane, 1-3 parts silane coupling agent, 2-4 parts antioxidant, 2-4 parts tert-butyl hydrogen peroxide, and 1-3 parts stearic acid.

[0006] Preferably, the antioxidant is antioxidant 1098; the silane coupling agent is silane coupling agent KH560; and the elastomer resin is ethylene-octene copolymer POE, wherein the octene content is 35-45%.

[0007] Preferably, the modified nano zinc dioxide is prepared by: S1: Calcine nano zinc oxide at 150-160℃ for 20-30 min, then heat it to 275℃ at a rate of 1-3℃ / min, hold it at that temperature for 5-10 min, and finally air cool it to room temperature; S2: Add 1-3 parts bentonite and 1-2 parts carboxymethyl cellulose to 5-8 parts lanthanum chloride solution, and then add 2-4 parts silane coupling agent KH560 and mix thoroughly to obtain modified solution; S3: The nano zinc oxide of S1 and the modification solution are stirred and modified at a weight ratio of 2:5. After stirring, the mixture is washed with water, filtered, and dried to obtain modified nano zinc oxide.

[0008] Preferably, the lanthanum chloride solution has a mass fraction of 2-5%.

[0009] Preferably, the stirring speed for the stirring modification treatment is 450-550 r / min, and the stirring time is 20-30 min.

[0010] Preferably, the preparation method of the whisker regulator is as follows: S11: First, add silicon carbide whiskers to a yttrium nitrate solution for ultrasonic immersion treatment, then filter and dry to obtain yttrium-doped silicon carbide whiskers; S12: 4-7 parts of yttrium-doped silicon carbide whiskers, 1-3 parts of nano-silica sol, 2-5 parts of sodium dodecylbenzenesulfonate solution, and 1-2 parts of lanthanum oxide were mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture was washed with water and dried to obtain the whisker conditioner.

[0011] Preferably, the ultrasonic power of the ultrasonic immersion treatment is 350-400W, and the ultrasonic time is 20-30min.

[0012] Preferably, the yttrium nitrate solution has a mass fraction of 2-5%; and the sodium dodecylbenzenesulfonate solution has a mass fraction of 3-6%.

[0013] Preferably, the mass ratio of the silicon carbide whiskers to the yttrium nitrate solution is 2:5.

[0014] The present invention also provides a method for preparing an elastomer hose, comprising the following steps: The raw materials are mixed at 70-75℃ for 1-2 hours at a mixing speed of 500-700 r / min. After mixing, the mixture is extruded in a twin-screw extruder at a temperature of 175℃. The resulting elastomer hose is obtained after extrusion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The elastomer hose of this invention uses elastomer resin combined with vinyl silane, silane coupling agent, antioxidant and other raw materials. By adding modified nano zinc dioxide and whisker regulator, the two are coordinated and synergistically enhanced, and the antibacterial and strength properties of the product are improved in a coordinated manner, as well as the heat resistance and acid corrosion resistance stability are significantly improved. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] An elastomeric flexible tube according to this embodiment comprises the following parts by weight of raw materials: 30-40 parts elastomer resin, 4-7 parts modified nano zinc dioxide, 2-5 parts whisker regulator, 2-4 parts vinyl silane, 1-3 parts silane coupling agent, 2-4 parts antioxidant, 2-4 parts tert-butyl hydrogen peroxide, and 1-3 parts stearic acid.

[0018] In this embodiment, the antioxidant is antioxidant 1098; the silane coupling agent is silane coupling agent KH560; and the elastomer resin is ethylene-octene copolymer POE, wherein the octene content is 35-45%.

[0019] The preparation method of the modified nano zinc dioxide in this embodiment is as follows: S1: Calcine nano zinc oxide at 150-160℃ for 20-30 min, then heat it to 275℃ at a rate of 1-3℃ / min, hold it at that temperature for 5-10 min, and finally air cool it to room temperature; S2: Add 1-3 parts bentonite and 1-2 parts carboxymethyl cellulose to 5-8 parts lanthanum chloride solution, and then add 2-4 parts silane coupling agent KH560 and mix thoroughly to obtain modified solution; S3: The nano zinc oxide of S1 and the modification solution are stirred and modified at a weight ratio of 2:5. After stirring, the mixture is washed with water, filtered, and dried to obtain modified nano zinc oxide.

[0020] The mass fraction of the lanthanum chloride solution in this embodiment is 2-5%.

[0021] In this embodiment, the stirring speed for the stirring modification treatment is 450-550 r / min, and the stirring time is 20-30 min.

[0022] The preparation method of the whisker regulator in this embodiment is as follows: S11: First, add silicon carbide whiskers to a yttrium nitrate solution for ultrasonic immersion treatment, then filter and dry to obtain yttrium-doped silicon carbide whiskers; S12: 4-7 parts of yttrium-doped silicon carbide whiskers, 1-3 parts of nano-silica sol, 2-5 parts of sodium dodecylbenzenesulfonate solution, and 1-2 parts of lanthanum oxide were mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture was washed with water and dried to obtain the whisker conditioner.

[0023] In this embodiment, the ultrasonic power of the ultrasonic immersion treatment is 350-400W, and the ultrasonic time is 20-30min.

[0024] In this embodiment, the yttrium nitrate solution has a mass fraction of 2-5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 3-6%.

[0025] In this embodiment, the mass ratio of silicon carbide whiskers to yttrium nitrate solution is 2:5.

[0026] This embodiment of a method for preparing an elastomer hose includes the following steps: The raw materials are mixed at 70-75℃ for 1-2 hours at a mixing speed of 500-700 r / min. After mixing, the mixture is extruded in a twin-screw extruder at a temperature of 175℃. The resulting elastomer hose is obtained after extrusion.

[0027] Example 1. An elastomeric flexible tube according to this embodiment comprises the following parts by weight of raw materials: The mixture contains 30 parts elastomer resin, 4 parts modified nano zinc dioxide, 2 parts whisker regulator, 2 parts vinyl silane, 1 part silane coupling agent, 2 parts antioxidant, 2 parts tert-butyl hydrogen peroxide, and 1 part stearic acid.

[0028] In this embodiment, the antioxidant is antioxidant 1098; the silane coupling agent is silane coupling agent KH560; and the elastomer resin is ethylene-octene copolymer POE, wherein the octene content is 35%.

[0029] The preparation method of the modified nano zinc dioxide in this embodiment is as follows: S1: Calcine nano zinc oxide at 150℃ for 20 min, then heat it to 275℃ at a rate of 1℃ / min, hold it at that temperature for 5 min, and finally air cool it to room temperature; S2: Add 1 part bentonite and 1 part carboxymethyl cellulose to 5 parts lanthanum chloride solution, and then add 2 parts silane coupling agent KH560 and mix thoroughly to obtain modified solution; S3: The nano zinc oxide of S1 and the modification solution are stirred and modified at a weight ratio of 2:5. After stirring, the mixture is washed with water, filtered, and dried to obtain modified nano zinc oxide.

[0030] The lanthanum chloride solution in this embodiment has a mass fraction of 2%.

[0031] In this embodiment, the stirring speed for the stirring modification treatment is 450 r / min, and the stirring time is 20 min.

[0032] The preparation method of the whisker regulator in this embodiment is as follows: S11: First, add silicon carbide whiskers to a yttrium nitrate solution for ultrasonic immersion treatment, then filter and dry to obtain yttrium-doped silicon carbide whiskers; S12: Four parts of yttrium-doped silicon carbide whiskers, one part of nano-silica sol, two parts of sodium dodecylbenzenesulfonate solution, and one part of lanthanum oxide were mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture was washed with water and dried to obtain the whisker conditioner.

[0033] In this embodiment, the ultrasonic immersion treatment has an ultrasonic power of 350W and an ultrasonic time of 20min.

[0034] In this embodiment, the yttrium nitrate solution has a mass fraction of 2%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 3%.

[0035] In this embodiment, the mass ratio of silicon carbide whiskers to yttrium nitrate solution is 2:5.

[0036] This embodiment of a method for preparing an elastomer hose includes the following steps: The raw materials were mixed at 70°C for 1 hour at a mixing speed of 500 r / min. After mixing, the mixture was extruded in a twin-screw extruder at a temperature of 175°C. The resulting elastomer hose was obtained after extrusion.

[0037] Example 2. An elastomeric flexible tube according to this embodiment comprises the following parts by weight of raw materials: The composition includes 40 parts elastomer resin, 7 parts modified nano zinc dioxide, 5 parts whisker regulator, 4 parts vinyl silane, 3 parts silane coupling agent, 4 parts antioxidant, 4 parts tert-butyl hydrogen peroxide, and 3 parts stearic acid.

[0038] In this embodiment, the antioxidant is antioxidant 1098; the silane coupling agent is silane coupling agent KH560; and the elastomer resin is ethylene-octene copolymer POE, wherein the octene content is 45%.

[0039] The preparation method of the modified nano zinc dioxide in this embodiment is as follows: S1: Calcine nano zinc oxide at 160℃ for 30 min, then heat it to 275℃ at a rate of 3℃ / min, hold it at that temperature for 10 min, and finally air cool it to room temperature; S2: Add 3 parts bentonite and 2 parts carboxymethyl cellulose to 8 parts lanthanum chloride solution, and then add 4 parts silane coupling agent KH560 and mix thoroughly to obtain modified solution; S3: The nano zinc oxide of S1 and the modification solution are stirred and modified at a weight ratio of 2:5. After stirring, the mixture is washed with water, filtered, and dried to obtain modified nano zinc oxide.

[0040] The lanthanum chloride solution in this embodiment has a mass fraction of 5%.

[0041] In this embodiment, the stirring speed for the stirring modification treatment is 550 r / min, and the stirring time is 30 min.

[0042] The preparation method of the whisker regulator in this embodiment is as follows: S11: First, add silicon carbide whiskers to a yttrium nitrate solution for ultrasonic immersion treatment, then filter and dry to obtain yttrium-doped silicon carbide whiskers; S12: 7 parts of yttrium-doped silicon carbide whiskers, 3 parts of nano-silica sol, 5 parts of sodium dodecylbenzenesulfonate solution, and 2 parts of lanthanum oxide were mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture was washed with water and dried to obtain the whisker conditioner.

[0043] In this embodiment, the ultrasonic immersion treatment has an ultrasonic power of 400W and an ultrasonic time of 30min.

[0044] In this embodiment, the yttrium nitrate solution has a mass fraction of 5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 6%.

[0045] In this embodiment, the mass ratio of silicon carbide whiskers to yttrium nitrate solution is 2:5.

[0046] This embodiment of a method for preparing an elastomer hose includes the following steps: The raw materials were mixed at 75°C for 2 hours at a mixing speed of 700 r / min. After mixing, the mixture was extruded in a twin-screw extruder at a temperature of 175°C. The resulting elastomer hose was obtained after extrusion.

[0047] Example 3. An elastomeric flexible tube according to this embodiment comprises the following parts by weight of raw materials: The mixture contains 35 parts elastomer resin, 5.5 parts modified nano zinc dioxide, 3.5 parts whisker regulator, 3 parts vinyl silane, 2 parts silane coupling agent, 3 parts antioxidant, 3 parts tert-butyl hydrogen peroxide, and 2 parts stearic acid.

[0048] In this embodiment, the antioxidant is antioxidant 1098; the silane coupling agent is silane coupling agent KH560; and the elastomer resin is ethylene-octene copolymer POE, wherein the octene content is 40%.

[0049] The preparation method of the modified nano zinc dioxide in this embodiment is as follows: S1: Calcine nano zinc oxide at 155℃ for 25 min, then heat it to 275℃ at a rate of 2℃ / min, hold it at that temperature for 7.5 min, and finally air cool it to room temperature; S2: Add 2 parts bentonite and 1.5 parts carboxymethyl cellulose to 6.5 parts lanthanum chloride solution, and then add 3 parts silane coupling agent KH560 and mix thoroughly to obtain the modified solution; S3: The nano zinc oxide of S1 and the modification solution are stirred and modified at a weight ratio of 2:5. After stirring, the mixture is washed with water, filtered, and dried to obtain modified nano zinc oxide.

[0050] The lanthanum chloride solution in this embodiment has a mass fraction of 3.5%.

[0051] In this embodiment, the stirring speed for the stirring modification treatment is 500 r / min, and the stirring time is 25 min.

[0052] The preparation method of the whisker regulator in this embodiment is as follows: S11: First, add silicon carbide whiskers to a yttrium nitrate solution for ultrasonic immersion treatment, then filter and dry to obtain yttrium-doped silicon carbide whiskers; S12: 5.5 parts of yttrium-doped silicon carbide whiskers, 2 parts of nano-silica sol, 3.5 parts of sodium dodecylbenzenesulfonate solution, and 1.5 parts of lanthanum oxide were blended and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture was washed with water and dried to obtain the whisker conditioner.

[0053] In this embodiment, the ultrasonic power of the ultrasonic immersion treatment is 375W, and the ultrasonic time is 25min.

[0054] In this embodiment, the yttrium nitrate solution has a mass fraction of 3.5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 4.5%.

[0055] In this embodiment, the mass ratio of silicon carbide whiskers to yttrium nitrate solution is 2:5.

[0056] This embodiment of a method for preparing an elastomer hose includes the following steps: The raw materials were mixed at 72°C for 1.5 hours at a mixing speed of 600 r / min. After mixing, the mixture was extruded in a twin-screw extruder at a temperature of 175°C. The resulting elastomer hose was obtained after extrusion.

[0057] Comparative Example 1. Unlike Example 3, no modified nano zinc dioxide was added.

[0058] Comparative Example 2. Unlike Example 3, no modification liquid treatment was used in the preparation of the modified nano zinc dioxide.

[0059] Comparative Example 3. Unlike Example 3, bentonite and carboxymethyl cellulose were not added to the modified solution.

[0060] Comparative Example 4. Unlike Example 3, no whisker regulator was added.

[0061] Comparative Example 5. Unlike Example 3, the whisker regulator was not treated with S11.

[0062] Comparative Example 6. Unlike Example 3, the whisker regulator was not prepared using S12 treatment.

[0063] Examples 1-3 and Comparative Examples 1-6 underwent routine performance tests, and the products were placed under 2% hydrochloric acid mist for 24 hours, followed by 12 hours at 60°C, repeated 5 times to test the acid resistance and heat resistance stability of the products. The performance test results are as follows:

[0064] As can be seen from Comparative Examples 1-6 and Example 3, the product of Example 3 has excellent antibacterial durability and tensile strength properties, and the performance of the product can be improved in a coordinated manner. Without the addition of either modified nano zinc dioxide or whisker regulator, the performance of the product tends to deteriorate significantly. By using both in combination, the product's performance is most significantly improved. In the preparation of modified nano zinc dioxide, the performance of the product tends to deteriorate if the modifying liquid treatment is not used, if bentonite, carboxymethyl cellulose, or whisker regulator is not added to the modifying liquid, or if the whisker regulator preparation does not use S11 treatment or S12 treatment. Only the modified nano zinc dioxide and whisker regulator obtained by the method of this invention have the most significant performance effect.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An elastomer hose, characterized in that, Including the following parts by weight of raw materials: 30-40 parts elastomer resin, 4-7 parts modified nano zinc dioxide, 2-5 parts whisker regulator, 2-4 parts vinyl silane, 1-3 parts silane coupling agent, 2-4 parts antioxidant, 2-4 parts tert-butyl hydrogen peroxide, and 1-3 parts stearic acid.

2. The elastomeric flexible hose according to claim 1, characterized in that, The antioxidant is antioxidant 1098; the silane coupling agent is silane coupling agent KH560; the elastomer resin is ethylene-octene copolymer POE, wherein the octene content is 35-45%.

3. The elastomeric flexible hose according to claim 1, characterized in that, The method for preparing the modified nano zinc dioxide is as follows: S1: Calcine nano zinc oxide at 150-160℃ for 20-30 min, then heat it to 275℃ at a rate of 1-3℃ / min, hold it at that temperature for 5-10 min, and finally air cool it to room temperature; S2: Add 1-3 parts bentonite and 1-2 parts carboxymethyl cellulose to 5-8 parts lanthanum chloride solution, and then add 2-4 parts silane coupling agent KH560 and mix thoroughly to obtain modified solution; S3: The nano zinc oxide of S1 and the modification solution are stirred and modified at a weight ratio of 2:

5. After stirring, the mixture is washed with water, filtered, and dried to obtain modified nano zinc oxide.

4. The elastomeric hose according to claim 3, characterized in that, The lanthanum chloride solution has a mass fraction of 2-5%.

5. The elastomeric flexible hose according to claim 3, characterized in that, The stirring speed for the stirring modification treatment is 450-550 r / min, and the stirring time is 20-30 min.

6. The elastomeric flexible hose according to claim 1, characterized in that, The preparation method of the whisker regulator is as follows: S11: First, add silicon carbide whiskers to a yttrium nitrate solution for ultrasonic immersion treatment, then filter and dry to obtain yttrium-doped silicon carbide whiskers; S12: 4-7 parts of yttrium-doped silicon carbide whiskers, 1-3 parts of nano-silica sol, 2-5 parts of sodium dodecylbenzenesulfonate solution, and 1-2 parts of lanthanum oxide were mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture was washed with water and dried to obtain the whisker conditioner.

7. The elastomeric hose according to claim 6, characterized in that, The ultrasonic immersion treatment has an ultrasonic power of 350-400W and an ultrasonic time of 20-30min.

8. The elastomeric hose according to claim 6, characterized in that, The yttrium nitrate solution has a mass fraction of 2-5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 3-6%.

9. The elastomeric hose according to claim 6, characterized in that, The mass ratio of silicon carbide whiskers to yttrium nitrate solution is 2:

5.

10. A method for preparing an elastomer hose as described in any one of claims 1-9, characterized in that, Includes the following steps: The raw materials are mixed at 70-75℃ for 1-2 hours at a mixing speed of 500-700 r / min. After mixing, the mixture is extruded in a twin-screw extruder at a temperature of 175℃. The resulting elastomer hose is obtained after extrusion.

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