Polyester / aramid fiber composite high-temperature-resistant and wear-resistant material and application thereof in preparation of automatic conveying belt

Abstract

The invention relates to a polyester / aramid fiber composite high-temperature-resistant and wear-resistant material, which comprises polyester resin, modified aramid fiber and a doped nano silicon dioxide additive, and the substance mass ratio of the polyester resin to the modified aramid fiber to the doped nano silicon dioxide additive is 9: (3-5): (2-4). According to the composite high-temperature-resistant and wear-resistant material, the polyester resin is adopted as a matrix, and the modified aramid fibers and the doped nano silicon dioxide additive are added for blending and coordinating, so that the wear resistance of a product is optimized, and meanwhile, the high-temperature-resistant and scratch-resistant stability of the product is remarkable.

Description

Technical Field

[0001] The present invention relates to the technical field of automated conveyor belts, and particularly to a polyester / aramid fiber composite high-temperature resistant and wear-resistant material and its application in the preparation of automated conveyor belts. Background Art

[0002] A conveyor belt is a rubber, fiber, and metal composite product or a plastic and fabric composite product that plays a role in carrying and transporting materials in a belt conveyor. Conveyor belts are widely used in occasions with short conveying distances and small conveying volumes in industries such as cement, coking, metallurgy, chemical industry, and steel. Belt conveyors are widely used in agriculture, industrial and mining enterprises, and the transportation industry to transport various solid lumps, powdered materials, or finished items, and the conveyor belt can be continuous.

[0003] The existing materials have poor wear resistance when applied in conveyor belts, and at the same time, the high-temperature resistance and scratch resistance stability of the products are poor, which limits the use efficiency of the products. Summary of the Invention

[0004] Aiming at the defects of the existing technology, the purpose of the present invention is to provide a polyester / aramid fiber composite high-temperature resistant and wear-resistant material and its application in the preparation of automated conveyor belts to solve the problems raised in the above background art.

[0005] The present invention adopts the following technical solutions to solve the technical problems: The present invention provides a polyester / aramid fiber composite high-temperature resistant and wear-resistant material, and the high-temperature resistant and wear-resistant material includes polyester resin, modified aramid fiber, and doped nano-silica additive, wherein the mass ratio of polyester resin, modified aramid fiber, and doped nano-silica additive is 9:(3 - 5):(2 - 4).

[0006] Preferably, the preparation method of the modified aramid fiber is as follows: S01: Mix silicon carbide whiskers, lanthanum chloride solution, and hydroxyapatite agent in a weight ratio of 3:5:1 to obtain a whisker solution; Add 2 - 4 parts of nano-bentonite and 1 - 3 parts of urea solution to 5 - 8 parts of the whisker solution and stir well to obtain a modified solution; S02: Immerse the aramid fiber in 3 - 5 times the total amount of the aramid fiber of the modified solution for ultrasonic modification treatment. After the ultrasonic treatment is completed, filter and dry to obtain the modified aramid fiber.

[0007] Preferably, the mass fraction of the lanthanum chloride solution is 2 - 5%; the mass fraction of the urea solution is 4 - 7%.

[0008] Preferably, the ultrasonic power of the ultrasonic modification treatment is 350 - 400W, and the ultrasonic treatment is carried out for 20 min.

[0009] Preferably, the preparation method of the hydroxyapatite agent is as follows: Mix sodium carboxymethylcellulose, nano-titanium dioxide and yttrium nitrate solution in a weight ratio of 2:3:5 and mix well to obtain nano-titanium dioxide solution; Mix hydroxyapatite, carbon nanotubes and nano-titanium dioxide solution well, then filter and dry to obtain the hydroxyapatite agent.

[0010] Preferably, the mass fraction of the yttrium nitrate solution is 4-6%.

[0011] Preferably, the preparation method of the doped nano-silica additive is as follows: S101: Irradiate nano-silica in a proton irradiation chamber for 10-20 min with an irradiation power of 350-400 W. After irradiation, obtain irradiated nano-silica; S102: Mix 4-7 parts of irradiated nano-silica, 2-5 parts of silicon carbide, 1-3 parts of silane coupling agent KH550 and 5-8 parts of sodium dodecylbenzenesulfonate solution well, then filter and dry to obtain the doped nano-silica additive.

[0012] Preferably, the mass fraction of the sodium dodecylbenzenesulfonate solution is 2-5%.

[0013] Application of a polyester / aramid fiber composite high-temperature resistant and wear-resistant material in the preparation of an automatic conveyor belt.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The composite high-temperature resistant and wear-resistant material of the present invention uses polyester resin as the matrix, and is adjusted and coordinated by adding modified aramid fiber and doped nano-silica additive, optimizing the wear resistance of the product while the high temperature resistance and scratch resistance stability of the product are remarkable. The modified aramid fiber is obtained by improving aramid fiber with a modification liquid. The nano-bentonite, urea solution and whisker liquid in the modification liquid are adjusted and coordinated, and then combined with the whisker liquid made of silicon carbide whiskers, lanthanum chloride solution and hydroxyapatite agent. The whisker-shaped whisker structure is combined with lamellar nano-bentonite, and the specific hydroxyapatite and carbon nanotube structures are used to optimize the reinforcement effect of aramid fiber in the system through the improvement of raw materials. The hydroxyapatite in the hydroxyapatite agent is adjusted and combined with carbon nanotubes and nano-titanium dioxide solution to enhance the coordination effect of the hydroxyapatite agent with the raw materials in the modification liquid. At the same time, the doped nano-silica additive is proton-irradiated with nano-silica and then improved by the cooperation of specific raw materials such as silicon carbide and silane coupling agent KH550, so that the coordination effect of the doped nano-silica additive with the modified aramid fiber is better, and the performance of the product is further improved. Detailed implementation mode

[0015] The following describes the technical solutions in the embodiments of the present invention clearly and completely in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0016] A polyester / aramid fiber composite high-temperature resistant and wear-resistant material in this embodiment, the high-temperature resistant and wear-resistant material includes polyester resin, modified aramid fiber, and doped nano-silica additive, wherein the mass ratio of polyester resin, modified aramid fiber, and doped nano-silica additive is 9:(3 - 5):(2 - 4).

[0017] The preparation method of the modified aramid fiber in this embodiment is as follows: S01: Blend silicon carbide whiskers, lanthanum chloride solution, and hydroxyapatite agent in a weight ratio of 3:5:1 to obtain a whisker solution; Add 2 - 4 parts of nano-bentonite and 1 - 3 parts of urea solution to 5 - 8 parts of the whisker solution and stir well to obtain a modified solution; S02: Immerse the aramid fiber into the modified solution 3 - 5 times the total amount of the aramid fiber and perform ultrasonic modification treatment. After the ultrasonic treatment ends, filter and dry to obtain the modified aramid fiber.

[0018] The mass fraction of the lanthanum chloride solution in this embodiment is 2 - 5%; the mass fraction of the urea solution is 4 - 7%.

[0019] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 350 - 400W, and the ultrasonic treatment is carried out for 20min.

[0020] The preparation method of the hydroxyapatite agent in this embodiment is as follows: Mix sodium carboxymethylcellulose, nano-titanium dioxide, and yttrium nitrate solution in a weight ratio of 2:3:5 to obtain a nano-titanium dioxide solution; Mix hydroxyapatite, carbon nanotubes, and the nano-titanium dioxide solution well, then filter and dry to obtain the hydroxyapatite agent.

[0021] The mass fraction of the yttrium nitrate solution in this embodiment is 4 - 6%.

[0022] The preparation method of the doped nano-silica additive in this embodiment is as follows: S101: Irradiate nano-silica in a proton irradiation chamber for 10 - 20min with an irradiation power of 350 - 400W. After the irradiation ends, obtain irradiated nano-silica; S102: Mix 4 - 7 parts of irradiated nano - silica, 2 - 5 parts of silicon carbide, 1 - 3 parts of silane coupling agent KH550 and 5 - 8 parts of sodium dodecylbenzenesulfonate solution thoroughly, then perform suction filtration and drying to obtain the doped nano - silica additive.

[0023] In this example, the mass fraction of the sodium dodecylbenzenesulfonate solution is 2 - 5%.

[0024] An application of a polyester / aramid fiber composite high - temperature resistant and wear - resistant material in this example in the preparation of an automated conveyor belt.

[0025] Example 1. A polyester / aramid fiber composite high - temperature resistant and wear - resistant material in this example, the high - temperature resistant and wear - resistant material includes polyester resin, modified aramid fiber and doped nano - silica additive, and the mass ratio of polyester resin, modified aramid fiber and doped nano - silica additive is 9:3:2.

[0026] The preparation method of the modified aramid fiber in this example is as follows: S01: Mix silicon carbide whiskers, lanthanum chloride solution and hydroxyapatite agent in a weight ratio of 3:5:1 thoroughly to obtain a whisker solution; Add 2 parts of nano - bentonite and 1 part of urea solution to 5 parts of the whisker solution and stir thoroughly to obtain a modified solution; S02: Immerse the aramid fiber into 3 times the total amount of the aramid fiber of the modified solution for ultrasonic modification treatment. After the ultrasonic treatment ends, perform suction filtration and drying to obtain the modified aramid fiber.

[0027] In this example, the mass fraction of the lanthanum chloride solution is 2%; the mass fraction of the urea solution is 4%.

[0028] The ultrasonic power of the ultrasonic modification treatment in this example is 350W, and the ultrasonic treatment is carried out for 20min.

[0029] The preparation method of the hydroxyapatite agent in this example is as follows: Mix sodium carboxymethylcellulose, nano - titanium dioxide and yttrium nitrate solution in a weight ratio of 2:3:5 thoroughly to obtain a nano - titanium dioxide solution; Mix hydroxyapatite, carbon nanotubes and the nano - titanium dioxide solution thoroughly, then perform suction filtration and drying to obtain the hydroxyapatite agent.

[0030] In this example, the mass fraction of the yttrium nitrate solution is 4%.

[0031] The preparation method of the doped nano - silica additive in this example is as follows: S101: Irradiate the nano - silica in a proton irradiation chamber for 10min with an irradiation power of 350W. After the irradiation ends, obtain the irradiated nano - silica; S102: Mix 4 parts of irradiated nano - silica, 2 parts of silicon carbide, 1 part of silane coupling agent KH550 and 5 parts of sodium dodecylbenzenesulfonate solution thoroughly, then perform suction filtration and drying to obtain the doped nano - silica additive.

[0032] In this embodiment, the mass fraction of the sodium dodecylbenzenesulfonate solution is 2%.

[0033] Application of a polyester / aramid fiber composite high - temperature resistant and wear - resistant material in this embodiment in the preparation of an automated conveyor belt.

[0034] Example 2. A polyester / aramid fiber composite high - temperature resistant and wear - resistant material in this embodiment, where the high - temperature resistant and wear - resistant material includes polyester resin, modified aramid fiber and doped nano - silica additive, and the mass ratio of polyester resin, modified aramid fiber and doped nano - silica additive is 9:5:4.

[0035] The preparation method of the modified aramid fiber in this embodiment is as follows: S01: Mix silicon carbide whiskers, lanthanum chloride solution and hydroxyapatite agent in a weight ratio of 3:5:1 thoroughly to obtain a whisker solution; Add 4 parts of nano - bentonite and 3 parts of urea solution to 8 parts of the whisker solution and stir thoroughly to obtain a modified solution; S02: Immerse aramid fibers into 5 times the total amount of the modified solution of aramid fibers and perform ultrasonic modification treatment. After the ultrasonic treatment ends, perform suction filtration and drying to obtain the modified aramid fiber.

[0036] In this embodiment, the mass fraction of the lanthanum chloride solution is 5%; the mass fraction of the urea solution is 7%.

[0037] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 400W, and the ultrasonic treatment is carried out for 20 min.

[0038] The preparation method of the hydroxyapatite agent in this embodiment is as follows: Mix sodium carboxymethylcellulose, nano - titanium dioxide and yttrium nitrate solution in a weight ratio of 2:3:5 thoroughly to obtain a nano - titanium dioxide solution; Mix hydroxyapatite, carbon nanotubes and the nano - titanium dioxide solution thoroughly, then perform suction filtration and drying to obtain the hydroxyapatite agent.

[0039] In this embodiment, the mass fraction of the yttrium nitrate solution is 6%.

[0040] The preparation method of the doped nano - silica additive in this embodiment is as follows: S101: Irradiate nano - silica in a proton irradiation chamber for 20 min with an irradiation power of 400W. After the irradiation ends, obtain the irradiated nano - silica; S102: Mix 7 parts of irradiated nano-silica, 5 parts of silicon carbide, 3 parts of silane coupling agent KH550 and 8 parts of sodium dodecylbenzenesulfonate solution thoroughly, then perform suction filtration and drying to obtain the doped nano-silica additive.

[0041] In this embodiment, the mass fraction of the sodium dodecylbenzenesulfonate solution is 5%.

[0042] Application of a polyester / aramid fiber composite high-temperature resistant and wear-resistant material in this embodiment in the preparation of an automated conveyor belt.

[0043] Example 3. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material in this embodiment, the high-temperature resistant and wear-resistant material includes polyester resin, modified aramid fiber and doped nano-silica additive, and the mass ratio of polyester resin, modified aramid fiber and doped nano-silica additive is 9:4:3.

[0044] The preparation method of the modified aramid fiber in this embodiment is as follows: S01: Mix silicon carbide whiskers, lanthanum chloride solution and hydroxyapatite agent in a weight ratio of 3:5:1 thoroughly to obtain a whisker solution; Add 3 parts of nano-bentonite and 2 parts of urea solution to 6.5 parts of the whisker solution and stir thoroughly to obtain a modified solution; S02: Immerse the aramid fiber into 4 times the total amount of the modified solution of the aramid fiber and perform ultrasonic modification treatment. After the ultrasonic treatment ends, perform suction filtration and drying to obtain the modified aramid fiber.

[0045] In this embodiment, the mass fraction of the lanthanum chloride solution is 3.5%; the mass fraction of the urea solution is 5; 5.5%.

[0046] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 375W and the ultrasonic treatment is for 20 minutes.

[0047] The preparation method of the hydroxyapatite agent in this embodiment is as follows: Mix sodium carboxymethylcellulose, nano-titanium dioxide and yttrium nitrate solution in a weight ratio of 2:3:5 thoroughly to obtain a nano-titanium dioxide solution; Mix hydroxyapatite, carbon nanotubes and the nano-titanium dioxide solution thoroughly, then perform suction filtration and drying to obtain the hydroxyapatite agent.

[0048] In this embodiment, the mass fraction of the yttrium nitrate solution is 5%.

[0049] The preparation method of the doped nano-silica additive in this embodiment is as follows: S101: Irradiate nano-silica in a proton irradiation chamber for 15 minutes with an irradiation power of 375W. After the irradiation ends, obtain the irradiated nano-silica; S102: Mix 5.5 parts of irradiated nano-silica, 3.5 parts of silicon carbide, 2 parts of silane coupling agent KH550 and 6.5 parts of sodium dodecylbenzenesulfonate solution thoroughly, then carry out suction filtration and drying to obtain the doped nano-silica additive.

[0050] In this example, the mass fraction of the sodium dodecylbenzenesulfonate solution is 3.5%.

[0051] Application of a polyester / aramid fiber composite high-temperature resistant and wear-resistant material in this example in the preparation of an automated conveyor belt.

[0052] Comparative example 1. The difference from Example 3 is that the modified aramid fiber is not added.

[0053] Comparative example 2. The difference from Example 3 is that the modification liquid is not added during the preparation of the modified aramid fiber.

[0054] Comparative example 3. The difference from Example 3 is that the hydroxyapatite agent is not added to the modification liquid.

[0055] Comparative example 4. The difference from Example 3 is that the hydroxyapatite agent is directly replaced by hydroxyapatite.

[0056] Comparative example 5. The difference from Example 3 is that the doped nano-silica additive is not added.

[0057] Comparative example 6. The difference from Example 3 is that silicon carbide and silane coupling agent KH550 are not added during the preparation of the doped nano-silica additive.

[0058] Performance tests of Examples 1 - 3 and Comparative examples 1 - 6, and the test results are as follows

[0059] It can be concluded from Examples 1 - 3 and Comparative examples 1 - 6 that the products of the present invention have excellent wear resistance. At the same time, under high-temperature and scratching conditions, the product performance stability is remarkable. And when the modified aramid fiber is not added or the doped nano-silica additive is not added, the product performance shows an obvious deterioration trend. Also, when the modification liquid is not added during the preparation of the modified aramid fiber, the hydroxyapatite agent is not added to the modification liquid, the hydroxyapatite agent is directly replaced by hydroxyapatite, or silicon carbide and silane coupling agent KH550 are not added during the preparation of the doped nano-silica additive, the product performance all shows a deterioration trend. Only by using the product raw materials obtained by the specific method of the present invention, the product performance effect is the most obvious.

[0060] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

[0061] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material, characterized in that, The high temperature and wear resistant material comprises polyester resin, modified aramid fiber and doped nano-silicon dioxide additive, wherein the mass ratio of the polyester resin, modified aramid fiber and doped nano-silicon dioxide additive is 9:(3-5):(2-4).

2. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 1, characterized in that, The modified aramid fiber preparation method is: S01: mixing silicon carbide whiskers, lanthanum chloride solution and hydroxyapatite agent in a weight ratio of 3:5:1 to obtain a whisker solution; Add 2-4 parts of nano-bentonite and 1-3 parts of urea solution to 5-8 parts of whisker solution and stir thoroughly to obtain a modified solution; S02: The aramid fiber is immersed in a modification liquid of 3-5 times the total amount of the aramid fiber for ultrasonic modification treatment. After the ultrasonic treatment is finished, the fiber is filtered and dried to obtain the modified aramid fiber.

3. The polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 2, wherein, The mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the urea solution is 4-7%.

4. The polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 2, characterized in that, The ultrasonic modification treatment is performed with an ultrasonic power of 350-400 W and ultrasonic treatment for 20 min.

5. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 2, characterized in that, The preparation method of the hydroxyapatite agent is: Mix sodium carboxymethyl cellulose, nano titanium dioxide and yttrium nitrate solution in a weight ratio of 2:3:5 to obtain nano titanium dioxide solution; The hydroxyapatite, carbon nanotubes and nano-titanium dioxide liquid are fully mixed, then filtered and dried to obtain the hydroxyapatite agent.

6. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 5, characterized in that, The mass fraction of the yttrium nitrate solution is 4-6%.

7. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 5, characterized in that, The preparation method of the doped nano-silicon dioxide additive is: S101: irradiating the nano-silicon dioxide in a proton irradiation box for 10-20 minutes at an irradiation power of 350-400W, and obtaining irradiated nano-silicon dioxide after the irradiation is completed; S102: 4-7 parts of irradiated nano-silica, 2-5 parts of silicon carbide, 1-3 parts of silane coupling agent KH550 and 5-8 parts of sodium dodecylbenzene sulfonate solution are fully mixed, and then filtered and dried to obtain a doped nano-silica additive.

8. A polyester / aramid fiber composite high-temperature resistant and wear-resistant material according to claim 7, characterized in that, The mass fraction of the sodium dodecylbenzene sulfonate solution is 2-5%.

9. Use of the polyester / aramid fiber composite high temperature resistant and wear resistant material according to any one of claims 1 to 8 in the preparation of an automated conveyor belt.

Images