CN109580308B - Preparation method of basalt fiber reinforced resin matrix composite rod tensile test piece - Google Patents
Preparation method of basalt fiber reinforced resin matrix composite rod tensile test piece Download PDFInfo
- Publication number
- CN109580308B CN109580308B CN201811602810.9A CN201811602810A CN109580308B CN 109580308 B CN109580308 B CN 109580308B CN 201811602810 A CN201811602810 A CN 201811602810A CN 109580308 B CN109580308 B CN 109580308B
- Authority
- CN
- China
- Prior art keywords
- sealant
- sample
- test piece
- polyester film
- tensile test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011347 resin Substances 0.000 title claims abstract description 40
- 229920005989 resin Polymers 0.000 title claims abstract description 40
- 238000009864 tensile test Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 239000011159 matrix material Substances 0.000 title claims abstract description 11
- 239000000565 sealant Substances 0.000 claims abstract description 37
- 229920006267 polyester film Polymers 0.000 claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 239000003822 epoxy resin Substances 0.000 claims abstract description 13
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000000805 composite resin Substances 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000011417 postcuring Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000741 silica gel Substances 0.000 abstract description 10
- 229910002027 silica gel Inorganic materials 0.000 abstract description 10
- 239000012945 sealing adhesive Substances 0.000 abstract description 8
- 239000006185 dispersion Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 9
- 238000005464 sample preparation method Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a preparation method of a basalt fiber reinforced resin matrix composite rod tensile test piece, which belongs to the field of composite material mechanical property testing and specifically comprises the following steps: s1, drawing a sealant pasting area, a to-be-tested sample placing line and a cutting line on a polyester film, and pasting a sealant on the sealant pasting area; s2, adhering a sample to be tested on the sealing adhesive along a sample placing line to be tested; s3, pasting a layer of sealant on the place where the sealant is pasted, and clamping the sample to be tested between two layers of sealant; s4, pouring an epoxy resin system into a resin pouring area surrounded by the sealant, and curing until the resin is not sticky and has elasticity; s5, cutting off the sealing glue at the two ends of the polyester film and cutting off the polyester film along the cutting line; and S6, after the high-temperature solidification is finished, taking out the product and naturally cooling the product to room temperature to obtain a tensile test piece. According to the invention, a silica gel mold is not used, so that the damage to the sample in the sample preparation process is avoided, the dispersion of the tensile property test result is reduced, and the manpower and material resources are saved.
Description
Technical Field
The invention belongs to the field of testing mechanical properties of basalt fiber reinforced resin matrix composite materials, and particularly relates to a preparation method of a tensile test piece of a basalt fiber reinforced resin matrix composite rod.
Background
The accuracy of the mechanical tensile property test result of the basalt fiber reinforced resin matrix composite rod is closely related to the preparation of a tensile test piece. At present, the preparation of the basalt fiber reinforced resin-based composite rod tensile test piece is prepared according to GB/T20310-. The tensile test piece prepared by the method has the following defects:
(1) because the demolding process is difficult, a sample to be tested is damaged during demolding, so that the test result is inaccurate, the dispersion is large, the surface of the silica gel mold is not smooth and uneven after the silica gel mold is used for several times, a pit is generated, the demolding is more difficult, and the test accuracy is further reduced;
(2) the used silica gel mold needs to be replaced after being used for a plurality of times, which wastes time and labor.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a novel method for preparing a tensile test piece for testing the mechanical tensile property of the basalt fiber reinforced resin-based composite rod. According to the invention, a silica gel mold is not used, so that the damage to the sample in the sample preparation process is avoided, the dispersion of the tensile property test result is reduced, and the manpower and material resources are saved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a basalt fiber reinforced resin matrix composite rod tensile test piece comprises the following steps:
s1, taking a polyester film, and drawing a sealant sticking area, a sample placing line to be detected and cutting lines on the polyester film, wherein the sealant sticking area is arranged at two ends of the sample placing line to be detected, the sample placing line to be detected is arranged in the middle of two adjacent cutting lines, a sealant is stuck on the sealant sticking area, and the sealant is enclosed into a resin pouring area;
s2, adhering a to-be-detected sample to the sealant along the to-be-detected sample placing line on the polyester film obtained in the S1, wherein the to-be-detected sample is perpendicular to the sealant;
s3, adhering a layer of sealant on the polyester film obtained in the step S2 at the position where the sealant is adhered, and clamping the sample to be detected between two layers of the sealant;
s4, pouring an epoxy resin system on the polyester film obtained in the step S3 in a resin pouring area surrounded by the sealant, and curing until the resin is not sticky and has elasticity;
s5, cutting off the sealing glue at the two ends of the polyester film and cutting off the polyester film along the cutting line;
s6, placing the sample cut in the step S5 into an oven, post-curing for 4-8 hours at 70 ℃, taking out the sample after complete curing, naturally cooling to room temperature to obtain a tensile test piece, and forming a resin reinforcing sheet of the tensile test piece by using the epoxy resin system after complete curing.
Further, the width of the polyester film is not less than 360mm, and the interval between the cutting lines is not less than 30 mm.
Further, the sealant is a black sponge sealing adhesive tape.
Further, the length of the sample to be detected is 280 mm-340 mm.
Furthermore, the epoxy resin system is prepared by mixing a main agent A and an auxiliary agent B, the ratio of A to B is 2:1, the main agent A is epoxy resin, and the auxiliary agent B is an epoxy curing agent.
Further, in the S4, the curing condition is that the resin is cured at room temperature for 3 hours or at 70 ℃ for 10 minutes, at this time, the resin is in a semi-cured state, the cutting is convenient, and the sample is not damaged, and if the curing is too long, the resin is completely cured, at this time, the resin is hard, the cutting is not easy, and the sample is easily damaged; if the curing is too short, the surface resin becomes tacky and the internal resin remains partially fluid and is not suitable for tailoring.
Compared with the prior art, the invention has the following advantages:
(1) according to the tensile sample piece prepared by the method, a placing position of a sample to be tested is marked by adopting a line drawing mode before sample preparation, the sample to be tested is fixed by using the sealant, and the sample to be tested is ensured to be vertical to the short edge of the resin reinforcing sheet, so that the stress of the sample to be tested in the tensile direction can be ensured to the maximum extent and the accuracy of a test result is increased as long as the sample to be tested is properly clamped during tensile test on a universal testing machine, and a silica gel mold is not used in the tensile sample piece, so that the sample to be tested is prevented from being damaged in the demolding process, the dispersion of the tensile property test result is reduced, and the accuracy of the test result is;
(2) the resin reinforcing sheet prepared by adopting the epoxy resin system has the characteristics of high toughness, high strength and strong adhesion with a sample to be tested after being completely cured, and cannot be clamped by a clamp in the test process or pulled away from the sample to be tested;
(3) the method is suitable for preparing tensile test pieces of the wurtzite fiber reinforced resin matrix composite rods with various diameters, is particularly suitable for preparing tensile test pieces of the basalt fiber reinforced resin matrix composite rods with the diameter of less than 1mm, can conveniently and quickly prepare the tensile test pieces in batches, and saves manpower and material resources.
Drawings
Figure 1 is a schematic drawing of a line used to illustrate one embodiment of the invention,
FIG. 2 is a schematic view of a tensile test piece used to illustrate one embodiment of the present invention;
in the figure: 1-a sealing adhesive pasting area, 2-a sample placing line to be tested, 3-a cutting line, 4-a resin pouring area, 5-a sample to be tested, 6-a sealing adhesive and 7-a resin reinforcing sheet.
Detailed Description
In order to more clearly understand the technical features, objects and effects of the present invention, the embodiments of the present invention will be described with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
The invention is further explained by adopting a basalt fiber reinforced resin matrix composite rod with the diameter of 0.4mm and combining the attached drawings, and the concrete steps are as follows:
s1, taking a 200 mm-380 mm polyester film, drawing a sealing adhesive sticking area 1 on each of two sides of the polyester film by using a marking pen and a ruler, drawing a to-be-detected sample placing line 2 and a cutting line 3 on the polyester film, wherein the distance between the adjacent cutting lines 3 is 30mm, the distance between the adjacent cutting lines 3 forms the width of a resin reinforcing sheet 7, the to-be-detected sample placing line 2 is positioned in the middle of the two adjacent cutting lines 3, a black sponge sealing tape is stuck on the sealing adhesive sticking area 1, the black sponge sealing tape surrounds a resin pouring area 4, as shown in figure 1, the width of the resin pouring area 4 is 60mm, and the width of the resin pouring area 4 forms the length of the resin reinforcing sheet 7;
s2, tearing off the protective film on the surface of the black sponge sealant tape on the polyester film obtained in the step S1, adhering a to-be-detected sample with the length of 340mm to the black sponge sealant tape along a to-be-detected sample placing line 2, and adhering 5 to the to-be-detected sample, wherein the to-be-detected sample is vertical to the sealant;
s3, adhering a layer of black sponge sealing adhesive tape to the polyester film obtained in the step S2 at the position where the sealant is adhered, and clamping 5 samples to be tested between the two layers of black sponge sealing adhesive tapes;
s4, weighing 400g of a main agent A and 200g of an auxiliary agent B, preparing an epoxy resin system, wherein the main agent A is epoxy resin, the auxiliary agent B is an epoxy curing agent, uniformly stirring and mixing, pouring the prepared epoxy resin system into a resin pouring area surrounded by the black sponge sealing tape on the polyester film obtained in the step S3, and curing at 70 ℃ for 10 minutes or at normal temperature for 3 hours until the resin is not sticky and has elasticity;
s5, cutting off the sealants at the two ends of the polyester film and cutting the polyester film along a cutting line to obtain 5 tensile test pieces, wherein as shown in figure 2, the length of a resin reinforcing sheet of each tensile test piece is 60mm, and the width of each resin reinforcing sheet is 30 mm;
s6, arranging and horizontally placing the sample pieces cut in the step S5 on a wood board, placing the wood board in an oven, curing for 4 hours at 70 ℃, taking out the wood board after curing, naturally cooling to room temperature to obtain a tensile test piece, and forming a resin reinforcing sheet 7 of the tensile test piece by using a completely cured epoxy resin system.
And (3) carrying out mechanical tensile property test on the tensile test piece prepared by the method and the tensile test piece prepared by the silica gel mold. The test results are shown in the following table.
| Sample preparation method | Root of 1 | 2 nd root of | Root of 3 | Root 4 | |
Mean value | Standard deviation of | Coefficient of dispersion |
| The invention relates to a sample preparation method | 109.10 | 108.94 | 110.23 | 113.43 | 111.31 | 110.60 | 1.85 | 1.67 |
| Sample preparation method of silica gel mold | 81.57 | 94.98 | 107.04 | Failure of | Failure of | 94.53 | 12.74 | 13.48 |
When a silica gel mold is used for preparing a tensile test piece, two pieces of the tensile test piece are broken during demolding, and sample preparation fails; when the method is used for preparing the tensile test piece, the demolding process is avoided, and the sample is well preserved. The data in the table also show that the tensile strength of the tensile test piece prepared by the method is higher than that of the tensile test piece prepared by using a silica gel mold, and the dispersion is smaller.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (6)
1. The preparation method of the basalt fiber reinforced resin matrix composite rod tensile test piece is characterized by comprising the following steps:
s1, taking a polyester film, and drawing a sealant sticking area, a sample placing line to be detected and cutting lines on the polyester film, wherein the sealant sticking area is arranged at two ends of the sample placing line to be detected, the sample placing line to be detected is arranged in the middle of two adjacent cutting lines, a sealant is stuck on the sealant sticking area, and the sealant is enclosed into a resin pouring area;
s2, adhering a to-be-detected sample to the sealant along the to-be-detected sample placing line on the polyester film obtained in the S1, wherein the to-be-detected sample is perpendicular to the sealant;
s3, adhering a layer of sealant on the polyester film obtained in the step S2 at the position where the sealant is adhered, and clamping the sample to be detected between two layers of the sealant;
s4, pouring an epoxy resin system on the polyester film obtained in the step S3 in a resin pouring area surrounded by the sealant, and curing until the resin is not sticky and has elasticity;
s5, cutting off the sealing glue at the two ends of the polyester film and cutting off the polyester film along the cutting line;
s6, placing the sample cut in the step S5 into an oven, post-curing for 4-8 hours at 70 ℃, taking out after complete curing, and naturally cooling to room temperature to obtain a tensile test piece.
2. The method for preparing a tensile test piece of the basalt fiber-reinforced resin-based composite rod according to claim 1, wherein the width of the polyester film is not less than 360mm, and the interval between the cutting lines is not less than 30 mm.
3. The preparation method of the basalt fiber-reinforced resin-based composite rod tensile test piece according to claim 1, wherein the sealant is a black sponge sealing tape.
4. The method for preparing the basalt fiber reinforced resin based composite rod tensile test piece according to claim 1, wherein the length of the test piece to be tested is 280mm to 340 mm.
5. The preparation method of the basalt fiber-reinforced resin-based composite rod tensile test piece according to claim 1, wherein the epoxy resin system is prepared by mixing a main agent A and an auxiliary agent B, the ratio of A to B is 2:1, the main agent A is epoxy resin, and the auxiliary agent B is an epoxy curing agent.
6. The method for preparing the basalt fiber-reinforced resin-based composite rod tensile test piece according to claim 1, wherein the curing condition in S4 is 3 hours at normal temperature or 10 minutes at 70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602810.9A CN109580308B (en) | 2018-12-26 | 2018-12-26 | Preparation method of basalt fiber reinforced resin matrix composite rod tensile test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602810.9A CN109580308B (en) | 2018-12-26 | 2018-12-26 | Preparation method of basalt fiber reinforced resin matrix composite rod tensile test piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109580308A CN109580308A (en) | 2019-04-05 |
| CN109580308B true CN109580308B (en) | 2021-06-01 |
Family
ID=65932803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811602810.9A Active CN109580308B (en) | 2018-12-26 | 2018-12-26 | Preparation method of basalt fiber reinforced resin matrix composite rod tensile test piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109580308B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926894A (en) * | 2019-11-28 | 2020-03-27 | 中国航空工业集团公司基础技术研究院 | Preparation method of composite material compression performance test piece |
| CN111693344A (en) * | 2020-05-27 | 2020-09-22 | 超威电源集团有限公司 | Manufacturing device and manufacturing method for plate grid mechanical property test sample |
| CN112730064B (en) * | 2020-12-29 | 2023-04-18 | 连云港神鹰复合材料科技有限公司 | Method for testing tensile breaking strength of carbon fiber fabric |
| CN113176128B (en) * | 2021-05-19 | 2022-08-30 | 中国建筑科学研究院有限公司 | Sample preparation method for testing tensile property of unidirectional carbon fiber cloth |
| CN117367919A (en) * | 2023-12-04 | 2024-01-09 | 北京玻钢院复合材料有限公司 | Carbon fiber multifilament tensile property test sample and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002093672A2 (en) * | 2001-05-15 | 2002-11-21 | Hydrogenics Corporation | Method of forming seals in fuel cells and fuel cell stacks |
-
2018
- 2018-12-26 CN CN201811602810.9A patent/CN109580308B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002093672A2 (en) * | 2001-05-15 | 2002-11-21 | Hydrogenics Corporation | Method of forming seals in fuel cells and fuel cell stacks |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109580308A (en) | 2019-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109580308B (en) | Preparation method of basalt fiber reinforced resin matrix composite rod tensile test piece | |
| CN108469366B (en) | A kind of large tow carbon fiber multifilament tensile property test sample and sample preparation method | |
| KR101856269B1 (en) | Quick composite repair template tool and method | |
| CN108254307B (en) | Quantitative test method for viscosity of prepreg | |
| CN112730064B (en) | Method for testing tensile breaking strength of carbon fiber fabric | |
| CN108548719B (en) | Method for testing interlayer normal strength of composite material | |
| CN110132667A (en) | Batch preparation tooling and method for adhesive tensile shear strength samples | |
| CN102086961B (en) | Process for manufacturing flexible honeycomb sandwich structure | |
| CN115219415A (en) | Double-lap joint sample for testing adhesive bonding interface strength and testing method | |
| CN111751273A (en) | Detection method for adhesive property of vulcanized rubber, cutter and vulcanization mold | |
| CN106501174B (en) | Test method for double-interface shear strength of aramid fiber-rubber composites | |
| CN109580476A (en) | A kind of detection method of automatic fiber placement preimpregnation tow surface viscosity | |
| CN112485097A (en) | Sample preparation method for factory inspection of elastic adhesive | |
| KR102778024B1 (en) | Test specimen of carbon fiber reinforced plastics and manufacturing method thereof | |
| CN109253903A (en) | A kind of composite material technique for sticking that adhesive thickness is controllable | |
| CN103158221B (en) | Resin casting body processing die | |
| CN104990813A (en) | Gum dipping fiber mechanical property testing method | |
| CN113176128B (en) | Sample preparation method for testing tensile property of unidirectional carbon fiber cloth | |
| CN118392659A (en) | Tensile breaking strength test method for carbon fiber fabric and application thereof | |
| CN103759621A (en) | Mould for testing aerodynamic configuration of repaired wind turbine blade, mould manufacture method and testing method through mould | |
| CN111284039B (en) | A kind of built-in fiber grating sensor and preparation method thereof | |
| CN115839885A (en) | Method for determination of mechanical properties of paint film | |
| CN110587868B (en) | Method for manufacturing vertical edge of main beam mold | |
| CN210401001U (en) | Carbon fiber sample preparation mould | |
| CN211553478U (en) | Auxiliary die for preparing shear test sample wafer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |