Device and method for testing wear resistance of carbon fibers

Abstract

The invention relates to a carbon fiber wear resistance testing device and a testing method, the carbon fiber wear resistance testing device comprises a support (1), the support (1) comprises an upper layer and a lower layer, the upper layer is provided with a carbon fiber reciprocating mechanism, the lower layer is provided with an infrared automatic sensing mechanism, one end of a carbon fiber (51) is horizontally connected with the carbon fiber reciprocating mechanism, and the other end of the carbon fiber (51) bypasses a friction rod (2) and is vertically connected with a weight (53). The carbon fiber reciprocating mechanism pulls the carbon fiber (51) to reciprocate once, and the weight (53) moving up and down enables the infrared automatic induction mechanism to induce once; before the carbon fiber (51) is abraded, the infrared automatic induction mechanism induces the number of times of reciprocating motion of the carbon fiber (51) to characterize the abrasion resistance of the carbon fiber. One end of the carbon fiber is wound and fixed on the fiber fixing rod sleeved with the silicone tube, the other end of the carbon fiber is wrapped by the adhesive plaster and then fixed on the weight, the friction rod is only in contact with the middle of the wire, and the possibility of non-friction wire breakage is avoided to the greatest extent.

Description

Technical Field

[0001] The invention relates to the field of carbon fiber wear resistance testing, and in particular to a testing device and a testing method for carbon fiber wear resistance. Background Art

[0002] Fiber wear resistance is the ability of the fiber to withstand wear or damage during contact with other surfaces. It is often characterized by the number of frictions the fiber can withstand when it breaks; since the fiber is constantly subjected to friction during processing, the size of its wear resistance determines the processability of the fiber.

[0003] Carbon fiber is an inorganic non-metallic brittle material. When a brittle object is worn, the surface layer of the object is worn away due to friction, and then the fiber itself is worn away. Therefore, wear resistance testing is also an important method to evaluate the performance of carbon fiber surface coatings.

[0004] Traditional carbon fiber wear resistance testing devices require several guide wheels. During the test, the brittle carbon fiber is moved back and forth on the guide wheels and is subjected to hundreds or thousands of repeated bends, which may lead to non-frictional breakage of the wire. Summary of the invention

[0005] The present invention designs a testing device and a testing method for the wear resistance of carbon fiber, which solves the technical problem that traditional carbon fiber wear resistance testing devices must have a number of guide wheels. During the test process, the brittle carbon fiber reciprocates on the guide wheels and undergoes hundreds or thousands of repeated bendings, which may cause non-friction breakage of the wire.

[0006] In order to solve the above-mentioned technical problems, the present invention adopts the following solutions: A testing device for carbon fiber wear resistance comprises a bracket, which comprises an upper and lower layer, wherein the upper layer is provided with a carbon fiber reciprocating mechanism, and the lower layer is provided with an infrared automatic sensing mechanism, wherein one end of the carbon fiber is horizontally connected to the carbon fiber reciprocating mechanism, and the other end of the carbon fiber is vertically connected to a weight by bypassing a friction rod, the carbon fiber reciprocating mechanism pulls the carbon fiber to reciprocate once, and the weight moving up and down causes the infrared automatic sensing mechanism to sense once; before the carbon fiber is worn off, the number of times the infrared automatic sensing mechanism senses the reciprocating motion of the carbon fiber represents the wear resistance of the carbon fiber.

[0007] Preferably, the carbon fiber reciprocating mechanism includes a reciprocating machine, a telescopic rod and a fiber fixing rod, one end of the telescopic rod is connected to the reciprocating machine, and the other end of the telescopic rod is connected to the fiber fixing rod through a rod end joint bearing, the telescopic rod and the fiber fixing rod form a T shape, the fiber fixing rod is covered with a silicone hose, and one end of the carbon fiber is fixed to the silicone hose through a fixing clip.

[0008] Preferably, a slider is respectively provided at the two ends of the fiber fixing rod, and each slider can move on a slide rail, and the slide rail is fixed on the upper layer of the bracket.

[0009] Preferably, the other end of the carbon fiber is wrapped with adhesive tape, and the carbon fiber wrapped with adhesive tape is wound on the hook of the weight.

[0010] Preferably, one end of the plurality of carbon fibers is fixed on the silicone hose, and the other end of each carbon fiber is wrapped with adhesive tape, and each carbon fiber wrapped with adhesive tape is wound on a hook of a weight.

[0011] Preferably, the infrared automatic sensing mechanism includes a counter probe, which is connected to the infrared automatic sensing calculator through a counter signal line. When the telescopic rod of the reciprocating machine is extended, the weight is located below the counter probe; when the telescopic rod is retracted, the weight is located above the counter probe. Every time the weight passes through the counter probe, the infrared automatic sensing calculator will automatically sense and add 1.

[0012] Preferably, the infrared automatic sensing mechanism further comprises a lifting platform, and the counter probe is located on the lifting platform, and the lifting platform can change the height of the counter probe in the vertical direction.

[0013] Preferably, the counter probes are multiple and arranged side by side.

[0014] Preferably, the upper layer of the bracket is provided with two vertical pipes, each of which is provided with a supporting fixing groove, and the two supporting fixing grooves are used to fix the friction rod with uniform roughness, and the height position of the friction rod in the supporting fixing groove is adjustable and horizontally arranged.

[0015] A method for testing the wear resistance of carbon fiber, the method using the above-mentioned testing device for the wear resistance of carbon fiber, the method comprising the following steps: During the test, after both ends of the carbon fiber to be tested are fixed, start the reciprocating machine, which makes the telescopic rod reciprocate; when the telescopic rod is extended, the weight is located below the counter probe, and when the telescopic rod is retracted, the weight is located above the counter probe. Every time the weight passes through the counter probe, the infrared automatic sensing calculator will automatically sense and add 1. When all the carbon fibers are worn off, the experiment is over. The number recorded by the infrared automatic sensing counter represents the wear resistance of the carbon fiber. The larger the number recorded by the infrared automatic sensing counter, the better the wear resistance of the carbon fiber.

[0016] The testing device and method for the wear resistance of carbon fiber have the following beneficial effects: (1) The present invention allows one end of the carbon fiber to be wound and fixed on a fiber fixing rod covered with a silicone tube, and the other end is wrapped with rubber tape and then fixed on a weight. The only contact during the wire travel is the friction rod, thereby minimizing the possibility of non-frictional wire breakage.

[0017] (2) The present invention can measure a number of carbon fibers at the same time, greatly improving the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : A schematic diagram of the structure of the support in the present invention; Figure 2 : Schematic diagram of the connection of components of the test device for the wear resistance of carbon fiber of the present invention; Figure 3 : A schematic top view of the telescopic rod of the present invention when it is extended; Figure 4 : A schematic top view of the telescopic rod of the present invention when it is retracted; Figure 5 : Figure 3 Schematic diagram of carbon fiber connection; Figure 6 : Figure 4 Schematic diagram of carbon fiber connection; Figure 7 : A side view of the telescopic rod of the present invention when it is extended; Figure 8 : A side view of the telescopic rod when it is retracted in the present invention.

[0019] Description of reference numerals: 1—bracket; 11—riser pipe; 111—support fixing groove; 2—friction rod; 31—reciprocating machine; 32—telescopic rod; 33—rod end joint bearing; 34—fiber fixing rod; 35—sliding block; 36—slide rail; 41—lifting platform; 42—counter probe; 43—counter signal line; 44—infrared automatic sensing calculator; 51—carbon fiber; 52—fixing clamp; 53—weight. DETAILED DESCRIPTION

[0020] Combine the following Figures 1 to 8 , the present invention is further described: like Figure 1 As shown, a stainless steel bracket 1 is first processed, wherein the upper parts of the two higher vertical pipes 11 are respectively provided with support fixing grooves 111, and the two support fixing grooves 111 are used to fix the friction rod 2 with uniform roughness. The height position of the friction rod 2 in the support fixing groove 111 is adjustable, but must be installed horizontally.

[0021] like Figure 2 As shown, there is a reciprocating machine 31 with adjustable stroke and speed on the upper right side of the bracket 1, and a pair of parallel slide rails 36 are provided on both sides of the upper left side of the bracket 1. A stainless steel rod, i.e., a fiber fixing rod 34, is fixed between the sliders 35 on the pair of slide rails 36. The middle position of the fiber fixing rod 34 is connected to the telescopic rod 32 of the reciprocating machine 31 through a rod end joint bearing 33, and the exposed part of the fiber fixing rod 34 is covered with a silicone hose of suitable size. Obviously, when the reciprocating machine 31 is running, the fiber fixing rod 34 will move back and forth horizontally synchronously with the telescopic rod 32.

[0022] A movable lifting platform 41 is provided at the lower left side of the bracket 1, and an infrared automatic sensing counter probe 42 is placed on the lifting platform 41. When an object passes through the counter probe 42, it will automatically sense and count once. Multiple counter probes 42 are connected to an infrared automatic sensing calculator 44 through a calculator signal line 43.

[0023] like Figure 3 and Figure 4 As shown, this is a schematic diagram of the upper components of the device. According to experience, the friction rod and the fiber fixing rod are as close as possible during design and processing, which is beneficial to the wire positioning of the fiber during the test.

[0024] like Figure 4-Figure 8 As shown, take a section of carbon fiber 51 of appropriate length, wind one end of the carbon fiber 51 around the fiber fixing rod 34, and after winding it tightly, clamp it with a circular fixing clamp 52 of appropriate size, pass it around the friction rod 2, straighten the carbon fiber 51, and first wrap the other end of the carbon fiber 51 with a piece of adhesive tape about 50 mm long, wrap the section of fiber wrapped with the adhesive tape around the hook of the weight 53, and further wrap it with another piece of adhesive tape to fix it.

[0025] During the test, when the telescopic rod 32 of the reciprocating machine 31 is extended, the weight 53 must be located below the counter probe 42, and when the telescopic rod 32 is retracted, the weight 53 must be located above the counter probe 42. In this way, each time the weight 53 passes through the probe, the counter will automatically sense and add 1. After the carbon fibers 51 to be tested are fixed, the reciprocating machine 31 can be started. When all the carbon fibers are worn off, the experiment is over, and the number of the infrared automatic sensing counter 44 can represent the wear resistance of the carbon fibers.

[0026] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A test device for the wear resistance of carbon fiber, comprising a bracket (1), the bracket (1) comprising an upper and lower layer, the upper layer being provided with a carbon fiber reciprocating mechanism, the lower layer being provided with an infrared automatic sensing mechanism, one end of the carbon fiber (51) being horizontally connected to the carbon fiber reciprocating mechanism, the other end of the carbon fiber (51) being vertically connected to a weight (53) by bypassing a friction rod (2), the carbon fiber reciprocating mechanism pulling the carbon fiber (51) to reciprocate once, and the weight (53) moving up and down causing the infrared automatic sensing mechanism to sense once; before the carbon fiber (51) is worn off, the number of times the infrared automatic sensing mechanism senses the reciprocating motion of the carbon fiber (51) represents the wear resistance of the carbon fiber.

2. The carbon fiber wear resistance testing device according to claim 1, characterized in that: The carbon fiber reciprocating mechanism comprises a reciprocating machine (31), a telescopic rod (32) and a fiber fixing rod (34); one end of the telescopic rod (32) is connected to the reciprocating machine (31); the other end of the telescopic rod (32) is connected to the fiber fixing rod (34) via a rod end joint bearing (33); the telescopic rod (32) and the fiber fixing rod (34) form a T-shape; the fiber fixing rod (34) is covered with a silicone hose; one end of the carbon fiber (51) is fixed to the silicone hose via a fixing clamp (52).

3. The carbon fiber wear resistance testing device according to claim 2, characterized in that: A slider (35) is respectively provided at the two ends of the fiber fixing rod (34), and each slider (35) is movable on a slide rail (36), and the slide rail (36) is fixed to the upper layer of the bracket (1).

4. The carbon fiber wear resistance testing device according to claim 3, characterized in that: The other end of the carbon fiber (51) is wrapped with adhesive tape, and the carbon fiber (51) wrapped with adhesive tape is wound around the hook of the weight (53).

5. The carbon fiber wear resistance testing device according to claim 2, characterized in that: One end of a plurality of carbon fibers (51) is fixed to a silicone hose, and the other end of each carbon fiber (51) is wrapped with adhesive tape, and each carbon fiber (51) wrapped with adhesive tape is wound around a hook of a weight (53).

6. The carbon fiber wear resistance testing device according to any one of claims 1 to 5, characterized in that: The infrared automatic sensing mechanism comprises a counter probe (42), the counter probe (42) is connected to an infrared automatic sensing calculator (44) via a counter signal line (43), when the telescopic rod (32) of the reciprocating machine (31) is extended, the weight (53) is located below the counter probe (42); when the telescopic rod (32) is retracted, the weight (53) is located above the counter probe (42), and each time the weight (53) passes through the counter probe (42), the infrared automatic sensing calculator (44) automatically senses and adds 1.

7. The carbon fiber wear resistance testing device according to claim 6, characterized in that: The infrared automatic sensing mechanism also includes a lifting platform (41), and the counter probe (42) is located on the lifting platform (41). The lifting platform (41) can change the height of the counter probe (42) in the vertical direction.

8. The carbon fiber wear resistance testing device according to claim 6, characterized in that: The counter probes (42) are multiple and arranged side by side.

9. The carbon fiber wear resistance testing device according to claim 7 or 8, characterized in that: The upper layer of the bracket (1) is provided with two vertical pipes (11), each of which is provided with a support fixing groove (111). The two support fixing grooves (111) are used to fix a friction rod (2) having a uniform roughness. The height of the friction rod (2) in the support fixing groove (111) is adjustable and is arranged horizontally.

10. A method for testing the wear resistance of carbon fiber, the method using the carbon fiber wear resistance testing device according to any one of claims 1 to 9, the method comprising the following steps: During the test, after both ends of the carbon fiber (51) to be tested are fixed, the reciprocating machine (31) is started, and the reciprocating machine (31) causes the telescopic rod (32) to reciprocate; When the telescopic rod (32) is extended, the weight (53) is located below the counter probe (42). When the telescopic rod (32) is retracted, the weight (53) is located above the counter probe (42). Each time the weight (53) passes through the counter probe (42), the infrared automatic sensing calculator (44) automatically senses and adds 1. When all the carbon fibers (51) are worn off, the experiment ends. The number recorded by the infrared automatic sensing counter (44) represents the quality of the wear resistance of the carbon fibers. The larger the number recorded by the infrared automatic sensing counter (44), the better the wear resistance of the carbon fibers.

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