Fiber erosion test device and method

Abstract

According to the fiber erosion test device and method, a plurality of grooves are formed in the two sides of a winding frame for fibers to penetrate through, so that the long fibers can be straightened and wound on the winding frame, and the grooves can play a role in fixing the fibers, so that the fibers do not slip and do not need to be cut short, and the fibers do not intersect and overlap on the winding frame; the winding frame is arranged in the container to ensure full contact of fibers and a test solution after the winding frame is placed in the container, and the test solution can flow to wash the fibers on the winding frame due to the arrangement of the circulating assembly, so that full contact of the fibers and the test solution is further ensured, and crystals separated from the test solution are prevented from being attached to the surfaces of the fibers in the soaking erosion process. Therefore, the accuracy of test results is ensured.

Description

Technical Field

[0001] The present application relates to the field of testing technology, and in particular to a fiber erosion testing device and method. Background Art

[0002] The fiber erosion test is an experimental method used to evaluate the durability and stability of fiber materials under chemical medium test erosion.

[0003] There are two main commonly used fiber erosion methods. One is to soak a 500mm fiber sample in an organic solvent that can dissolve the wetting agent for a certain period of time, then wash and dry it to constant weight, and then cut it into yarn segments of about 20mm, soak it in a chemical medium test solution, take it out after a certain period of time, filter it through a practical sintered filter, and calculate the mass loss rate after washing and drying; the other is to wash the yarn sample and soak it in an alkaline salt solution, take it out for washing and drying for a certain period of time, measure the mechanical properties of the yarn such as tensile breaking strength before and after erosion, and calculate the changes in mechanical properties such as strength retention rate.

[0004] However, the above-mentioned etching method has the following defects: during the fiber immersion and etching process, stirring is required to ensure sufficient contact between the fiber and the solution. Short fiber bundles are easily dispersed during the stirring process, which causes errors in quality testing. Long fiber bundles are easily dispersed, knotted, and broken during the immersion process, resulting in inaccurate mechanical property test results. During the immersion process, the chemical medium test solution often precipitates crystals that adhere to the fiber surface, affecting the test results. Summary of the invention

[0005] The purpose of the present application is to provide a fiber erosion test device and method to ensure sufficient contact between the fiber and the test solution while ensuring the accuracy of the test results.

[0006] The embodiments of the present application can be implemented as follows:

[0007] In a first aspect, the present invention provides a fiber erosion test device, comprising:

[0008] Container for holding the test solution;

[0009] a circulation component, connected to the container, and used for flowing the test solution;

[0010] The winding frame is used to be placed in the container. The winding frame is provided with a plurality of grooves on two opposite sides thereof. The grooves are used for fibers to pass through so that the fibers are wound on the winding frame.

[0011] In an optional embodiment, the fiber erosion test device further comprises a monitoring component, wherein the monitoring component comprises a plurality of detection probes, wherein the detection probes extend into the container and are used to detect various working parameters of the test solution in real time;

[0012] The circulation component can adjust the test solution according to the working parameters to maintain each of the working parameters at a corresponding preset threshold value.

[0013] In an optional embodiment, the operating parameters include temperature, pH, cycle frequency and ion concentration, and the circulation component is capable of adjusting the temperature, pH and cycle frequency of the test solution.

[0014] In an optional embodiment, the winding frame is in a frame structure.

[0015] In an optional embodiment, the winding frame is a quadrilateral frame, including a first rod, a second rod, a third rod and a fourth rod connected end to end in sequence, the first rod and the third rod are opposite to each other, the second rod and the fourth rod are opposite to each other, and the first rod and the third rod are respectively provided with a plurality of the grooves on their sides facing away from each other.

[0016] In an optional embodiment, the second rod body or the fourth rod body corresponds to the bottom wall of the container.

[0017] In a second aspect, the present invention provides a fiber erosion test method, which is implemented based on the fiber erosion test device described in any one of the aforementioned embodiments, and the method comprises:

[0018] S1, sample preparation: select a fiber sample and record the initial weight and initial mechanical properties, then straighten and wind the fiber sample on the winding frame;

[0019] S2, fiber erosion: placing the winding frame with the fiber sample wound thereon into the container containing the test solution for immersion erosion;

[0020] S3, sample removal and cleaning: take out the eroded fiber sample from the test solution, wash it clean and dry it;

[0021] S4, test analysis: record the final mass and final mechanical properties of the fiber sample after cooling, calculate the mass loss rate based on the final mass and initial weight, and evaluate the change of mechanical properties based on the initial and final mechanical properties.

[0022] In an optional embodiment, in step S1, the selected fiber sample is cut into 3000 mm and then weighed to record the initial weight, and then wound onto a winding frame.

[0023] In an optional embodiment, in step S2, the test solution is an alkaline solution, the temperature is 60-100° C., and the immersion time is 2-24 hours.

[0024] In an optional embodiment, in step S3, the washed fiber sample is placed in a constant temperature drying oven to dry to constant weight, and then the dried fiber sample is placed in a dryer to cool to room temperature.

[0025] The beneficial effects of the embodiments of the present application include, for example:

[0026] By arranging a plurality of grooves on both sides of the winding frame for the fibers to pass through, the long fibers can be straightened and wound on the winding frame, and the grooves can fix the fibers to prevent them from slipping and do not need to be shortened. The fibers will not cross and overlap on the winding frame, ensuring that the fibers are fully in contact with the test solution after the winding frame is placed in the container. In addition, due to the arrangement of the circulation component, the test solution can flow to flush the fibers on the winding frame, further ensuring that the fibers are fully in contact with the test solution, and at the same time avoiding the crystals precipitated from the test solution during the immersion erosion process and adhering to the fiber surface, thereby ensuring the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of a fiber erosion test device according to an embodiment of the present application;

[0029] Figure 2 This is a flowchart of the fiber erosion experimental method according to an embodiment of the present application.

[0030] Icons: 10-container; 20-winding rack; 21-first rod; 22-second rod; 23-third rod; 24-fourth rod; 25-groove; 30-detection probe; 40-fiber; 50-circulation exhaust port; 60-cabinet; 61-temperature monitoring area; 62-ion concentration monitoring area; 63-pH monitoring area; 65-equipment switch. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] Combination Figure 1 The embodiment of the present application discloses a fiber 40 erosion test device, which includes a container 10, a circulation component and a winding frame 20.

[0039] The container 10 is mainly used to hold the test solution; the circulation component is connected to the container 10 to allow the test solution to flow; the winding frame 20 is used to be placed in the container 10, and the winding frame 20 is provided with a plurality of grooves 25 on both sides opposite to each other, and the grooves 25 are used for the fibers 40 to pass through so that the fibers 40 are wound on the winding frame 20.

[0040] In this way, by providing a plurality of grooves 25 on both sides of the winding frame 20 for the fiber 40 to pass through, the long fiber 40 can be straightened and wound on the winding frame 20, and the grooves 25 can play a role in fixing the fiber 40, so that the fiber 40 does not slip and does not need to be shortened. The fiber 40 will not cross and overlap on the winding frame 20, ensuring that the fiber 40 is fully in contact with the test solution after the winding frame 20 is placed in the container 10. In addition, due to the setting of the circulation component, the test solution can flow to flush the fiber 40 on the winding frame 20, further ensuring that the fiber 40 is fully in contact with the test solution, and at the same time avoiding the crystals precipitated from the test solution during the immersion erosion process and adhering to the surface of the fiber 40, thereby ensuring the accuracy of the test result.

[0041] In order to ensure the stability of the test solution, the fiber 40 erosion test device further includes a monitoring component, which includes a plurality of detection probes 30, which extend into the container 10 and are used to detect various working parameters of the test solution in real time;

[0042] The circulation component can adjust the test solution according to the working parameters to maintain each working parameter at its corresponding preset threshold value.

[0043] The working parameters include temperature, pH, cycle frequency and ion concentration. The cycle component can adjust the temperature, pH and cycle frequency of the test solution. The ion concentration can detect the concentration of various ions in the solution, so as to analyze the reaction law in the fiber 40 erosion process through the ion concentration data change law curve, so that personnel can modify the fiber 40 according to this law, etc.

[0044] The operating states of the temperature regulator, pH reagent kit and delivery pump in the circulation component can be changed according to the detection results of the detection probe 30, and the control and adjustment of these components are achieved through a controller electrically connected to the circulation component.

[0045] For example, if the temperature is less than or equal to the preset temperature value, the controller can control the temperature regulator to generate heat to provide heat to heat the test solution. If the temperature is higher than the preset temperature value, the controller can control the temperature adjustment component to absorb heat and provide cold to cool the test solution, thereby ensuring that the temperature of the test solution maintains the preset temperature value. The preset temperature value can be set according to actual needs, for example, any value between 60 and 100°C, specifically 60°C, 90°C or 100°C, etc.

[0046] If the pH is less than or equal to the preset pH value, the controller can control the valve opening of the pH test kit and the frequency of the injection pump to quantitatively output an alkaline medium, such as sodium hydroxide, potassium hydroxide or calcium hydroxide, etc. If the pH is greater than the preset pH value, an acidic medium, such as hydrochloric acid or nitric acid, etc., is quantitatively output to ensure the test solution. The test solution can be an alkaline solution, and in some embodiments it can also be an acid solution. The specific required pH value is set according to actual needs.

[0047] If the cycle frequency is less than or equal to the preset frequency, the controller can control the delivery pump to increase the operating frequency to increase the cycle frequency. If the cycle frequency is greater than the preset frequency, the controller can control the delivery pump to reduce the operating frequency to reduce the cycle frequency, thereby maintaining the cycle frequency at the preset frequency and keeping the flow rate of the test solution constant. The cycle frequency (i.e., the delivery pump operating frequency) is set according to the actual required solution flow rate.

[0048] Among them, the above-mentioned controller, circulation component and monitoring component are integrated in a cabinet 60 to form an integral control cabinet, which is convenient for storage and operation. That is to say, the fiber 40 erosion test device also includes a cabinet 60, and the container 10 is installed on the upper side of the cabinet 60. The controller and the circulation component are both located inside the cabinet 60, and the pipeline of the circulation component extends into the container 10 to drive the circulation of the test solution. The detection probes 30 are distributed at the four corners of the rectangular container 10. Of course, if the container 10 is circular or other shapes, it is only necessary to ensure uniform distribution as much as possible, such as circumferential distribution along the container 10.

[0049] The cabinet 60 is provided with a device switch 65, a temperature monitoring area 61, an ion concentration monitoring area 62, a pH monitoring area 63, etc., so that personnel can observe and set various working parameters in real time.

[0050] In addition, the fiber 40 corrosion test device also includes an alarm, which can directly set the timing function of the immersion time, so that after the timing ends, the controller controls the alarm to start and prompt the personnel to take out the winding rack 20, thus ending the immersion corrosion process.

[0051] The above-mentioned controller is usually a central processing unit (CPU), which can be configured with a corresponding operating system and control interface, etc. Specifically, it can be a single-chip microcomputer, DSP (Digital Signal Processing), ARM (Advanced RISC Machines, ARM processor) and other digital logic control units that can be used for automatic control. The control instructions can be loaded into the memory at any time for storage and execution. At the same time, it can have built-in CPU instruction and data memory, input and output units, power supply modules, digital simulation and other units. The specific settings can be made according to actual usage, and the embodiments of the present application are not limited to this.

[0052] The winding frame 20 may be a hollow keel structure, or may be a frame structure as shown in the figure, thereby reducing the contact area between the winding frame 20 and the fiber 40 and ensuring that the fiber 40 can fully contact with the test solution.

[0053] The winding frame 20 is a quadrilateral frame, including a first rod 21, a second rod 22, a third rod 23 and a fourth rod 24 connected end to end in sequence, the first rod 21 and the third rod 23 are opposite to each other, the second rod 22 and the fourth rod 24 are opposite to each other, and a plurality of grooves 25 are respectively provided on the opposite sides of the first rod 21 and the third rod 23, so that the contact area between the fiber 40 and the winding frame 20 is smaller, and the fiber 40 is better guaranteed to be fully in contact with the test solution.

[0054] The second rod 22 or the fourth rod 24 corresponds to the bottom wall of the container 10 , so that the fiber 40 does not contact the bottom wall of the container 10 , ensuring that the fiber 40 is in full contact with the solution.

[0055] The length of the second rod body 22 and the fourth cylinder body may be 20 cm, and the length of the first rod body 21 and the third rod body 23 may be 20 cm.

[0056] The container 10 is made of a material with good corrosion resistance, such as tempered glass, which can ensure strength and is not affected by the corrosive solution. Circulation exhaust ports 50 are set in the middle of the four sides of the rectangular container 10 to ensure that the air and bubbles in the system are effectively removed, thereby maintaining uniform flow of the fluid and stable operation of the system.

[0057] When there are many fibers 40 to be immersed and corroded, the number of fiber 40 winding frames 20 can be increased according to actual needs.

[0058] Combination Figure 2 This embodiment also discloses a fiber 40 erosion test method, which is implemented based on the fiber 40 erosion test device mentioned above, and the method includes:

[0059] Step S1 , sample preparation: select a fiber 40 sample and record the initial weight and initial mechanical properties, then straighten the fiber 40 sample and wind it on the winding frame 20 .

[0060] The selected fiber 40 sample is cut into 3000 mm and then weighed to record the initial weight, and then wound on the winding frame 20, and pre-treated by cleaning, drying, etc. It should be noted that when winding the fiber 40, the intervals between the fibers 40 should be as uniform as possible, and there should be no crossing or overlap between the fibers 40. The fiber 40 specifically adopts a basalt fiber 40 sample.

[0061] Step S2, erosion of the fiber 40: placing the winding frame 20 wound with the fiber 40 sample into the container 10 containing the test solution for immersion and erosion;

[0062] The test solution is an alkaline solution, such as sodium hydroxide, potassium hydroxide solution, etc., the temperature is 60-100°C, such as 60°C, 90°C, 100°C, etc., and the immersion time is 2-24h, such as 2 hours, 6 hours, 12 hours, 24 hours, etc. In addition, the test solution can also be an acid solution or a water-based solution, such as tap water, saline solution, hydrochloric acid, nitric acid or acetic acid, etc.

[0063] Step S3, sample removal and cleaning: the eroded fiber 40 sample is removed from the test solution, cleaned and dried;

[0064] Among them, the fiber 40 sample is taken out from the solution after reaching the specified immersion time, and then the fiber 40 sample is washed with clean water to ensure that there is no residue. The washed fiber 40 sample is placed in a constant temperature drying oven (105±5℃) and dried to constant weight, and then the dried fiber 40 sample is placed in a dryer to cool to room temperature.

[0065] It should be noted that, since the test solution is an alkaline solution, a hydrochloric acid solution with a concentration of 2 g / L is required to clean the container 10 and the filter to neutralize the alkaline solution and dissolve the precipitates and particles formed by the alkali corrosion.

[0066] Step S4, test analysis: record the final mass and final mechanical properties of the cooled fiber 40 sample, calculate the mass loss rate according to the final mass and initial weight, and evaluate the change of mechanical properties according to the initial mechanical properties and final mechanical properties.

[0067] The cooled sample is weighed again, the final weight is recorded, and the mass loss rate of the sample during the immersion process is calculated. The ion concentration change curve in the solution is derived from the testing machine to analyze the reaction law during the erosion of the fiber 40. The fiber 40 before and after corrosion is subjected to tensile performance tests, compression performance tests, bending performance tests, shear performance tests, fatigue performance tests, impact performance tests, bonding performance tests, thermomechanical performance tests and other mechanical performance tests to evaluate the changes in mechanical properties. The microscopic morphology and diameter changes of the fiber 40 before and after corrosion are observed using instruments such as a scanning electron microscope (SEM) to intuitively evaluate the degree of corrosion of the fiber 40.

[0068] In summary, the embodiments of the present application disclose a fiber 40 erosion test device and a fiber 40 erosion test method, wherein a plurality of grooves 25 are provided on both sides of a winding frame 20 for the fibers 40 to pass through, so that the long fibers 40 can be straightened and wound on the winding frame 20, and the grooves 25 can fix the fibers 40 so that the fibers 40 do not slip and do not need to be shortened. The fibers 40 will not cross or overlap on the winding frame 20, thereby ensuring that the fibers 40 are in full contact with the test solution after the winding frame 20 is placed in the container 10. Furthermore, due to the provision of a circulation component, the test solution can flow to flush the fibers 40 on the winding frame 20, further ensuring that the fibers 40 are in full contact with the test solution, while preventing crystals precipitated from the test solution from adhering to the surface of the fibers 40 during the immersion erosion process, thereby ensuring the accuracy of the test results.

[0069] Finally, it should be noted that in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0070] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fiber erosion test device, characterized in that: include: Container for holding the test solution; a circulation component, connected to the container, and used for flowing the test solution; The winding frame is used to be placed in the container. The winding frame is provided with a plurality of grooves on two opposite sides thereof. The grooves are used for fibers to pass through so that the fibers are wound on the winding frame.

2. The fiber erosion test device according to claim 1, characterized in that: The fiber erosion test device further comprises a monitoring component, wherein the monitoring component comprises a plurality of detection probes, wherein the detection probes extend into the container and are used for real-time detection of various working parameters of the test solution; The circulation component can adjust the test solution according to the working parameters to maintain each of the working parameters at a corresponding preset threshold value.

3. The fiber erosion test device according to claim 2, characterized in that: The working parameters include temperature, pH, circulation frequency and ion concentration, and the circulation component can adjust the temperature, pH and circulation frequency of the test solution.

4. The fiber erosion test device according to claim 1, characterized in that: The winding frame is in a frame structure.

5. The fiber erosion test device according to claim 4, characterized in that: The winding frame is a quadrilateral frame, including a first rod, a second rod, a third rod and a fourth rod connected end to end in sequence, the first rod and the third rod are opposite to each other, the second rod and the fourth rod are opposite to each other, and the first rod and the third rod are respectively provided with a plurality of grooves on the sides opposite to each other.

6. The fiber erosion test device according to claim 5, characterized in that: The second rod body or the fourth rod body corresponds to the bottom wall of the container.

7. A fiber erosion test method, implemented based on the fiber erosion test device according to any one of claims 1 to 6, characterized in that: The method comprises: S1, sample preparation: select a fiber sample and record the initial weight and initial mechanical properties, then straighten and wind the fiber sample on the winding frame; S2, fiber erosion: placing the winding frame with the fiber sample wound thereon into the container containing the test solution for immersion erosion; S3, sample removal and cleaning: take out the eroded fiber sample from the test solution, wash it clean and dry it; S4, test analysis: record the final mass and final mechanical properties of the fiber sample after cooling, calculate the mass loss rate based on the final mass and initial weight, and evaluate the change of mechanical properties based on the initial and final mechanical properties.

8. The fiber erosion test method according to claim 7, characterized in that: In step S1, the selected fiber sample is cut into 3000 mm and then weighed to record the initial weight, and then wound onto a winding frame.

9. The fiber erosion test method according to claim 7, characterized in that: In step S2, the test solution is an alkaline solution, the temperature is 60-100°C, and the immersion time is 2-24 hours.

10. The fiber erosion test method according to claim 7, characterized in that: In step S3, the washed fiber sample is placed in a constant temperature drying oven to dry to constant weight, and then the dried fiber sample is placed in a dryer to cool to room temperature.

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