CN111562175A - Method for testing strength of ceramic fiber after high-temperature treatment - Google Patents
Method for testing strength of ceramic fiber after high-temperature treatment Download PDFInfo
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- CN111562175A CN111562175A CN202010461376.8A CN202010461376A CN111562175A CN 111562175 A CN111562175 A CN 111562175A CN 202010461376 A CN202010461376 A CN 202010461376A CN 111562175 A CN111562175 A CN 111562175A
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- ceramic fiber
- ceramic
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- 239000000835 fiber Substances 0.000 title claims abstract description 131
- 239000000919 ceramic Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 12
- 238000004513 sizing Methods 0.000 claims abstract description 11
- 238000009864 tensile test Methods 0.000 claims abstract description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 42
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 30
- 239000003292 glue Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 14
- 229920000647 polyepoxide Polymers 0.000 claims description 14
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 229960001124 trientine Drugs 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- JDVIRCVIXCMTPU-UHFFFAOYSA-N ethanamine;trifluoroborane Chemical compound CCN.FB(F)F JDVIRCVIXCMTPU-UHFFFAOYSA-N 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000004843 novolac epoxy resin Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011226 reinforced ceramic Substances 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Abstract
The invention discloses a method for testing the strength of ceramic fibers after high-temperature treatment, which comprises the following steps: (1) placing the ceramic fiber in a high-temperature furnace for heat treatment; (2) bundling the ceramic fibers subjected to heat treatment in the step (1); (3) gluing the bundled ceramic fiber bundle; (4) and (4) carrying out a tensile test on the ceramic fiber bundle subjected to the sizing treatment in the step (3), and reading the breaking strength of the stretched fiber. After the technical scheme is adopted, the method for testing the strength of the ceramic fibers after high-temperature treatment provided by the invention has the advantages that the bundling step is introduced, the ceramic fibers scattered after high-temperature treatment are bundled and then glued, the ceramic fibers are ensured not to be easily damaged and uniformly glued, the tensile strength value of the real fiber yarns can be reflected in the test of the ceramic fibers after high-temperature treatment, and the stability and the accuracy of the test result are ensured.
Description
Technical Field
The invention relates to the technical field of fiber material testing, in particular to a method for testing the strength of ceramic fibers after high-temperature treatment.
Background
The ceramic fiber (SiCF) reinforced ceramic matrix composite has excellent high-temperature mechanical properties, so that the SiCF is widely used as a high-temperature structural component, such as a rocket tube, a missile nose cone, a wing leading edge, a brake pad and the like, and the SiCF is used as a novel semiconductor material and becomes the most important semiconductor material for manufacturing short-wavelength optical electronic devices, high-temperature devices, anti-irradiation devices and high-power and high-frequency electronic devices by virtue of excellent physicochemical characteristics and electrical characteristics of the SiCF. The SiCF material has huge application potential in the aspects of high temperature, high frequency, high power, high voltage photoelectron, radiation resistance and the like. However, the strength of the fiber directly affects the strength of the fiber reinforced composite material, and it is very important to detect the strength of the fiber bundle after high temperature treatment.
The existing detection method is to test the strength of single fiber after high-temperature treatment, and the tensile strength of normal-temperature strand is tested after direct sizing treatment, and no method is used for testing the fiber after high-temperature treatment (no sizing agent is on the surface of the fiber after high-temperature treatment, and the fiber is in a loose state).
Therefore, there is a need for improved tensile strength testing methods for fiber tow after high temperature processing.
Disclosure of Invention
Aiming at the problems, the invention provides a method for testing the strength of ceramic fibers after high-temperature treatment, which can solve the test problems of low tensile strength and large variation coefficient of the ceramic fibers after high-temperature treatment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for testing the strength of ceramic fibers after high-temperature treatment comprises the following steps:
(1) placing the ceramic fiber in a high-temperature furnace for heat treatment;
(2) bundling the ceramic fibers subjected to heat treatment in the step (1);
(3) gluing the bundled ceramic fiber bundle;
(4) and (4) carrying out a tensile test on the ceramic fiber bundle subjected to the sizing treatment in the step (3), and reading the breaking strength of the stretched fiber.
Preferably, in the step (1), the temperature of the high-temperature furnace heat treatment is 1100 ℃, and the ceramic fiber is continuously dried for 2 hours.
Preferably, in the step (2), the plurality of ceramic fibers after heat treatment are placed in a bundling disc, butanone is dropped into one end of the plurality of ceramic fibers, and the end of the plurality of ceramic fibers on which butanone is dropped is bundled by a glass bent tube filled with butanone liquid until all the ceramic fibers are bundled.
Preferably, in the step (3), a sizing mechanism is adopted to size the collected fiber bundle.
Preferably, in the step (3), the gel content of the collected fiber bundle is controlled to be 35% to 50%.
Preferably, in the step (3), the glue consists of F-8 novolac epoxy resin, boron trifluoride monoethylamine curing agent and acetone, and acetone is used as a solvent, wherein the weight ratio of the F-8 novolac epoxy resin to the boron trifluoride monoethylamine curing agent to the acetone is 10: 0.3: 0.5, after the ceramic fiber bundle is soaked in the glue and dried, the ceramic fiber bundle needs to be solidified for more than 30min at the temperature of 170 +/-3 ℃.
Preferably, in the step (3), the glue consists of epoxy resin, triethylene tetramine curing agent and acetone, and the acetone is used as a solvent, wherein the weight ratio of the epoxy resin to the triethylene tetramine curing agent to the acetone is 10: 1: 0.5, after the ceramic fiber bundle is soaked in the glue and dried, the ceramic fiber bundle needs to be solidified for more than 30min at the temperature of 120 +/-3 ℃.
Preferably, the epoxy resin is one of E-44 epoxy resin and E-51 epoxy resin. From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
according to the strength testing method for the ceramic fibers after high-temperature treatment, the bundling step is introduced, the ceramic fibers scattered after high-temperature treatment are bundled and then glued, the ceramic fibers are ensured not to be damaged easily and are glued uniformly, the tensile strength value of real fiber yarns can be reflected by the ceramic fibers after high-temperature treatment, and the stability and accuracy of the testing result are ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic connection diagram of an apparatus used in a bundling process for a method for testing strength of ceramic fibers after high temperature treatment according to the present invention;
FIG. 2 is a front view of a cluster plate for use in a method of testing the strength of ceramic fibers after high temperature treatment in accordance with the present invention;
FIG. 3 is a side view of a cluster plate for use in a method of testing the strength of ceramic fibers after high temperature treatment in accordance with the present invention;
FIG. 4 is a front view of a sizing mechanism for use in a method for testing the strength of ceramic fibers after high temperature processing in accordance with the present invention;
FIG. 5 is a side view of a sizing mechanism for a method of testing the strength of ceramic fibers after high temperature processing in accordance with the present invention.
In the figure: 1. a bundling plate; 2. bending the glass tube; 3. gluing mechanism.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, 2, 3, 4 and 5, a method for testing strength of ceramic fiber after high temperature treatment includes the following steps:
step one, placing the ceramic fiber in a high-temperature furnace for heat treatment.
In this example, the temperature of the high temperature furnace heat treatment was 1100 ℃, and the ceramic fibers were continuously dried for 2 hours.
And step two, performing bundling treatment on the ceramic fibers subjected to the heat treatment in the step one.
In this embodiment, the specific steps are that a plurality of ceramic fibers after heat treatment are placed in a bundling plate 1, butanone is dropped into one end of the ceramic fibers, and the end of the ceramic fibers on which butanone is dropped is bundled by a glass bent tube 2 filled with butanone liquid until all the ceramic fibers are bundled.
Thirdly, a gluing mechanism is adopted to glue the bundled ceramic fiber bundle, wherein the glue is composed of F-8 novolac epoxy resin, boron trifluoride monoethyl amine curing agent and acetone, the acetone is used as a solvent, and the weight ratio of the F-8 novolac epoxy resin to the boron trifluoride monoethyl amine curing agent to the acetone is 10: 0.3: 0.5, after the ceramic fiber bundle is soaked in the glue and dried, the ceramic fiber bundle needs to be solidified for more than 30min at the temperature of 170 +/-3 ℃.
In the embodiment, the gel content of the collected fiber bundle is controlled to be 35-50%; meanwhile, the ceramic fiber should be uniformly impregnated, and the surface of the ceramic fiber is straight, flat, smooth and free of beaded resin hardened substances.
And step four, performing a tensile test on the ceramic fiber bundle subjected to the sizing treatment in the step three, and reading the breaking strength of the stretched fiber.
Example 2
Referring to fig. 1, 2, 3, 4 and 5, a method for testing strength of ceramic fiber after high temperature treatment includes the following steps:
step one, placing the ceramic fiber in a high-temperature furnace for heat treatment.
In this example, the temperature of the high temperature furnace heat treatment was 1100 ℃, and the ceramic fibers were continuously dried for 2 hours.
And step two, performing bundling treatment on the ceramic fibers subjected to the heat treatment in the step one.
In this embodiment, the specific steps are that a plurality of ceramic fibers after heat treatment are placed in a bundling plate 1, butanone is dropped into one end of the ceramic fibers, and the end of the ceramic fibers on which butanone is dropped is bundled by a glass bent tube 2 filled with butanone liquid until all the ceramic fibers are bundled.
Thirdly, a gluing mechanism is adopted to glue the bundled ceramic fiber bundle, wherein the glue is composed of E-44 epoxy resin, triethylene tetramine curing agent and acetone, the acetone is used as a solvent, and the weight ratio of the E-44 epoxy resin to the triethylene tetramine curing agent to the acetone is 10: 1: 0.5, and after the ceramic fiber bundle filaments are soaked in the glue and dried, the ceramic fiber bundle filaments are cured for more than 30min at the temperature of 120 +/-3 ℃.
In the embodiment, the gel content of the collected fiber bundle is controlled to be 35-50%; meanwhile, the ceramic fiber should be uniformly impregnated, and the surface of the ceramic fiber is straight, flat, smooth and free of beaded resin hardened substances.
And step four, performing a tensile test on the ceramic fiber bundle subjected to the sizing treatment in the step three, and reading the breaking strength of the stretched fiber.
Example 3
Referring to fig. 1, 2, 3, 4 and 5, a method for testing strength of ceramic fiber after high temperature treatment includes the following steps:
step one, placing the ceramic fiber in a high-temperature furnace for heat treatment.
In this example, the temperature of the high temperature furnace heat treatment was 1100 ℃, and the ceramic fibers were continuously dried for 2 hours.
And step two, performing bundling treatment on the ceramic fibers subjected to the heat treatment in the step one.
In this embodiment, the specific steps are that a plurality of ceramic fibers after heat treatment are placed in a bundling plate 1, butanone is dropped into one end of the ceramic fibers, and the end of the ceramic fibers on which butanone is dropped is bundled by a glass bent tube 2 filled with butanone liquid until all the ceramic fibers are bundled.
Thirdly, a gluing mechanism is adopted to glue the bundled ceramic fiber bundle, wherein the glue is composed of E-51 epoxy resin, triethylene tetramine curing agent and acetone, the acetone is used as a solvent, and the weight ratio of the E-51 epoxy resin to the triethylene tetramine curing agent to the acetone is 10: 1: 0.5, and after the ceramic fiber bundle filaments are soaked in the glue and dried, the ceramic fiber bundle filaments are cured for more than 30min at the temperature of 120 +/-3 ℃.
In the embodiment, the gel content of the collected fiber bundle is controlled to be 35-50%; meanwhile, the ceramic fiber should be uniformly impregnated, and the surface of the ceramic fiber is straight, flat, smooth and free of beaded resin hardened substances.
And step four, performing a tensile test on the ceramic fiber bundle subjected to the sizing treatment in the step three, and reading the breaking strength of the stretched fiber.
According to the strength testing method for the ceramic fibers after high-temperature treatment, the bundling step is introduced, the ceramic fibers scattered after high-temperature treatment are bundled and then glued, the ceramic fibers are ensured not to be damaged easily and are glued uniformly, the tensile strength value of real fiber yarns can be reflected by the test of the ceramic fibers after high-temperature treatment, and the stability and accuracy of the test result are ensured.
The following comparative table (table 1) of the results obtained by carrying out tests on the breaking strength of ceramic fibres using the original method (direct gluing) and the method of the invention, respectively, is as follows:
TABLE 1
According to the test data, the test strength of the same ceramic fiber obtained by the original method (direct gluing) is obviously lower than that obtained by the method, so that the damage to the fiber and uneven gluing caused by the fact that the original method does not carry out bundling and direct gluing are not performed on the fiber; the coefficient of variation of the strength obtained by the method is far smaller than that obtained by the original method, which shows that the fluctuation of the test strength obtained by using the method is obviously smaller than that obtained by the original method (directly applying glue).
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A method for testing the strength of ceramic fibers after high-temperature treatment is characterized by comprising the following steps:
(1) placing the ceramic fiber in a high-temperature furnace for heat treatment;
(2) bundling the ceramic fibers subjected to heat treatment in the step (1);
(3) gluing the bundled ceramic fiber bundle;
(4) and (4) carrying out a tensile test on the ceramic fiber bundle subjected to the sizing treatment in the step (3), and reading the breaking strength of the stretched fiber.
2. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 1, wherein the method comprises the following steps: in the step (1), the temperature of the high-temperature furnace heat treatment is 1100 ℃, and the ceramic fiber is continuously dried for 2 hours.
3. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 1, wherein the method comprises the following steps: in the step (2), a plurality of ceramic fibers after heat treatment are placed in a bundling disc, butanone is dripped into one end of the ceramic fibers, and the end of the ceramic fibers on which butanone is dripped is bundled by a glass bent pipe filled with butanone liquid until all the ceramic fibers are bundled.
4. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 1, wherein the method comprises the following steps: in the step (3), a gluing mechanism is adopted to glue the collected fiber bundle.
5. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 1, wherein the method comprises the following steps: in the step (3), the gel content of the collected fiber bundle is controlled to be 35-50%.
6. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 1, wherein the method comprises the following steps: in the step (3), the glue consists of F-8 novolac epoxy resin, boron trifluoride monoethylamine curing agent and acetone, and the acetone is used as a solvent, wherein the weight ratio of the F-8 novolac epoxy resin to the boron trifluoride monoethylamine curing agent to the acetone is 10: 0.3: 0.5, after the ceramic fiber bundle is soaked in the glue and dried, the ceramic fiber bundle needs to be solidified for more than 30min at the temperature of 170 +/-3 ℃.
7. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 1, wherein the method comprises the following steps: in the step (3), the glue consists of epoxy resin, triethylene tetramine curing agent and acetone, and the acetone is used as a solvent, wherein the weight ratio of the epoxy resin to the triethylene tetramine curing agent to the acetone is 10: 1: 0.5, after the ceramic fiber bundle is soaked in the glue and dried, the ceramic fiber bundle needs to be solidified for more than 30min at the temperature of 120 +/-3 ℃.
8. The method for testing the strength of the ceramic fiber after the high-temperature treatment as claimed in claim 7, wherein: the epoxy resin is one of E-44 epoxy resin and E-51 epoxy resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010461376.8A CN111562175A (en) | 2020-05-27 | 2020-05-27 | Method for testing strength of ceramic fiber after high-temperature treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402278A (en) * | 2021-06-10 | 2021-09-17 | 福建立亚新材有限公司 | Preparation method of ceramic fiber for high-temperature test |
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2020
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Patent Citations (5)
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|---|---|---|---|---|
| US5200370A (en) * | 1990-11-16 | 1993-04-06 | Fiber Materials, Inc. | Monocrystalline ceramic fibers and method of preparing same |
| CN1476498A (en) * | 2001-07-24 | 2004-02-18 | 日本板硝子株式会社 | Hybrid cord and rubber product |
| CN101280468A (en) * | 2008-05-22 | 2008-10-08 | 西安工程大学 | Multi-needle V-shaped groove drum electrostatic spinning system and preparation of nano-fiber tuft |
| CN105080359A (en) * | 2015-08-07 | 2015-11-25 | 天津工业大学 | Preparing method for ceramic hollow fiber oxygen permeating membrane bundle |
| CN207498282U (en) * | 2017-11-02 | 2018-06-15 | 元源新材料有限公司 | A kind of glass fiber wire-drawing beaming device |
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Application publication date: 20200821 |