CN105352773A - Method for testing breaking strength of glass fiber product - Google Patents
Method for testing breaking strength of glass fiber product Download PDFInfo
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- CN105352773A CN105352773A CN201510817098.4A CN201510817098A CN105352773A CN 105352773 A CN105352773 A CN 105352773A CN 201510817098 A CN201510817098 A CN 201510817098A CN 105352773 A CN105352773 A CN 105352773A
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Abstract
The invention discloses a method for testing breaking strength of a glass fiber product, and belongs to the technical field of strength test. The method comprises the steps: spreading out alkali-free glass fiber cloth for testing flatly, and clipping six 40 mm*280 mm cloth strips keeping 50 mm from the edge of the cloth for testing in the radial direction and the weft direction; taking 2-3 parts of a polyimide adhesive and 1 part of dimethyl amide, and mixing evenly for standby application; placing the clipped cloth strip small samples on plate glass, smoothing and straightening, and brush-coating the prepared mixed adhesive on two ends of two faces of each cloth strip small sample, covering a glass panel, making fibers straightened and perpendicular to each other, and curing for 1-2 h at the temperature of 60-70 DEG C; straightening the cloth strip small samples after curing, and clipping to the width of 25 mm at the middle parts; and putting the cloth strip small samples in a tensile machine fixture, and carrying out breaking strength test. The method has no need of drawing in the preparation of the samples, and avoids a phenomenon of inaccurate test data caused by smaller sample size caused because the fibers at the edges of the cloth strips are easy to fall off.
Description
Technical field
The invention belongs to strength test technical field, particularly relate to a kind of method of tested glass fibre ultimate strength.It is the test for alkali-free glass fiber cloth and alkali-free glass fibre band ultimate strength.
Background technology
At present, the test method for fiberglass products ultimate strength has two kinds: JC176-80 " fiberglass products test method " and GB7689.1-2001 " mensuration of fiberglass tensile ultimate strength and elongation at break ".The practical operation of the latter's sample making course is more difficult, test findings is undesirable.Alkali-free glass goods ultimate strength usual invocation architecture material industry ministerial standard: JC176-80 " fiberglass products test method ".Wherein specify the mensuration of glass cloth ultimate strength, upright lever testing machine carries out, and the selection of index dial should make the mean value of cloth sample ultimate strength in the range of readings of index dial 20-75%.Method for making sample is the method for reeling off raw silk from cocoons, and size of sample is: 25mm × 280mm, namely from the specification of cutting out is 40mm × 280mm cloth both sides, takes out organdy, till width is 25mm just.After cloth sample size conforms with the regulations, be placed on sheet glass by cloth sample, shakeout stretch with hand, then according to the size of Fig. 1, what in the sample exposed on both sides with hairbrush, one or two sides was very thin is coated with glass fiber connectors glue or similar cementing material.After cloth sample gluing, put into baking oven, dry more than 30 minutes at the temperature of 105-110 DEG C, till cementing material is all dried, then under testing laboratory's standard conditions of regulation, carry out ultimate strength mensuration.The drawback that the method exists: very easily cause fiber to be shifted after method of 1. reeling off raw silk from cocoons sample preparation in gluing process or cloth destruction, cause test figure inaccurate, and in drawing process, produce the fibrous bundle of a large amount of glass fiber to the cloth edge that operator's respiratory system brings great damage to be 2. made up of the method for reeling off raw silk from cocoons in gluing process easily come off and cause specimen size less than normal and cause test figure inaccurate; 3. apply and need high-temperature heating for increasing the tackifier of frictional resistance between cloth and fixture, process is loaded down with trivial details, and high temperature easily causes the inner toxic solvent volatilization of tackifier, works the mischief to operator's health.
Summary of the invention
For the technical matters of above-mentioned existence, the drawback prepared sample for avoiding sampling and bring, increase data reliability simultaneously, the invention provides a kind of method of tested glass fibre ultimate strength, tackifier for applying fiberglass products sample end can play increases friction force effect between sample and fixture, solves the phenomenon that fiber cloth is skidded or ruptured along clamp edges in fixture.
The object of the invention is to be achieved through the following technical solutions:
A method for tested glass fibre ultimate strength, comprises the steps:
(1) test alkali-free glass fiber cloth is shakeout, test cloth apart from 50mm place, edge the radially cloth of each cutting 6 40mmX280mm with broadwise;
(2) preparation mixing jelly: get polyimides adhesive 2-3 part, dimethylformamide 1 part, mixes, put into glass beaker for subsequent use;
(3) the cloth sample of (1) step cutting is placed on sheet glass, smooth and stretch, at the mixing jelly that the two ends brushing step (2) on the two sides of cloth sample is prepared, cover face glass, make straightening of fibers and mutually vertical, fiber is prevented to be shifted or cloth destruction, 60-70 ° of solidification 1-2 hour;
(4) by stretching for the cloth sample after solidification, being cut to width in middle part is 25mm;
(5) cloth sample is put into clamp of tensile machine, carry out ultimate strength test.
Further, in described (2) step, in cloth sample, the length of gluing is: one end gluing length L1 is 90mm, and other end gluing length L2 is 110mm.
Further, when described cloth sample puts into clamp of tensile machine, cloth sample one end is clamped in the upper grip of fixture, Width yarn is parallel to upper grip base, and other direction, perpendicular to upper grip base, ensures yarn uniform force, screw upper grip, lower chuck is stretched in cloth sample lower end, keeps upper and lower jaw separation to be 200mm, screws lower chuck.
When described cloth sample clamping is in fixture, sheet rubber is set between cloth sample and fixture.
Beneficial effect of the present invention is:
Present invention, avoiding and very easily cause the test figure that fiber is shifted or cloth destroys and causes inaccurate in gluing process; Do not use the method for reeling off raw silk from cocoons when preparing sample, the fibrous bundle avoiding cloth edge easily comes off and causes that specimen size is less than normal causes the inaccurate phenomenon of test figure; The present invention is for applying the tackifier low-temperature setting of fiberglass products sample end, simple to operate, the occupational health hazards that the glass fiber avoiding high temperature adhesive volatilization and method of reeling off raw silk from cocoons to produce brings.
Accompanying drawing explanation
Fig. 1 is test cloth sample schematic diagram of the present invention.
Fig. 2 is cloth sample gluing schematic diagram in Fig. 1.
Embodiment
Describe the present invention below in conjunction with drawings and Examples.
Embodiment 1: this routine test material: select the glass fabric that Tianjin glass fibre factory produces, the trade mark: EW100, thickness: 0.1mm, ultimate fibre nominal diameter 5.5 microns, equipment: American I NSTRON electronic tensile machine 3365, range: 2KN, test condition: temperature: 23 DEG C of humidity: 65%.
The present invention includes following steps:
(1) test alkali-free glass fiber cloth is shakeout, test cloth apart from 50mm place, edge the radially cloth of each cutting 6 40mmX280mm with broadwise, as shown in Figure 1, L=280mm, H=40mm;
(2) preparation mixing jelly: get polyimides adhesive 2-3 part, dimethylformamide 1 part, mixes, put into glass beaker for subsequent use;
(3) the cloth sample of (1) step cutting is placed on sheet glass, smooth and stretch, with the mixing jelly that hairbrush is prepared at the two ends brushing step (2) on the two sides of cloth sample, one end gluing length L1 is 90mm, and other end gluing length L2 is 110mm, covers face glass, make straightening of fibers and mutually vertical, fiber is prevented to be shifted or cloth destruction, 60-70 ° of solidification 1-2 hour, as shown in Figure 2;
(4) by stretching for the cloth sample after solidification, being cut to width in middle part is 25mm;
(5) cloth sample is put into clamp of tensile machine, carry out ultimate strength test.
When described cloth sample puts into clamp of tensile machine, cloth sample one end is clamped in the upper grip of fixture, between cloth sample and fixture, sheet rubber is set, Width yarn is parallel to upper grip base, and other direction, perpendicular to upper grip base, ensures yarn uniform force, screw upper grip, lower chuck is stretched in cloth sample lower end, keeps upper and lower jaw separation to be 200mm, screws lower chuck; Preload makes cloth stretch, and keeps draw speed 100mm/min at the uniform velocity to stretch until cloth fracture.Respectively using the arithmetic mean of whole measurement results of warp-wise and broadwise as the ultimate strength of this Lot sample.
Embodiment 2: this example as different from Example 1: in this example:
(2) preparation mixing jelly: get polyimides adhesive 2 parts, dimethylformamide 1 part, mixes, put into glass beaker for subsequent use;
The cloth sample of (1) step cutting is placed on sheet glass by (3), smooth and stretch, at the mixing jelly that the two ends brushing step (2) on the two sides of cloth sample is prepared, one end gluing length is 90mm, and other end gluing length is 110mm, covers face glass, make straightening of fibers and mutually vertical, prevent fiber to be shifted or cloth destruction, 60 ° solidify 2 hours, as shown in Figure 2.
Embodiment 3: this example as different from Example 1: in this example:
(2) preparation mixing jelly: get polyimides adhesive 3 parts, dimethylformamide 1 part, mixes, put into glass beaker for subsequent use;
The cloth sample of (1) step cutting is placed on sheet glass by (3), smooth and stretch, at the mixing jelly that the two ends brushing step (2) on the two sides of cloth sample is prepared, one end gluing length is 90mm, and other end gluing length is 110mm, covers face glass, make straightening of fibers and mutually vertical, prevent fiber to be shifted or cloth destruction, 70 ° solidify 1 hour, as shown in Figure 2.
Embodiment 4: this example as different from Example 1: in this example:
(2) preparation mixing jelly: get polyimides adhesive 2.5 parts, dimethylformamide 1 part, mixes, put into glass beaker for subsequent use;
The cloth sample of (1) step cutting is placed on sheet glass by (3), smooth and stretch, at the mixing jelly that the two ends brushing step (2) on the two sides of cloth sample is prepared, one end gluing length is 90mm, and other end gluing length is 110mm, covers face glass, make straightening of fibers and mutually vertical, prevent fiber to be shifted or cloth destruction, 65 ° solidify 1.5 hours, as shown in Figure 2.
Claims (4)
1. a method for tested glass fibre ultimate strength, is characterized in that: comprise the steps:
(1) test alkali-free glass fiber cloth is shakeout, test cloth apart from 50mm place, edge the radially cloth of each cutting 6 40mmX280mm with broadwise;
(2) preparation mixing jelly: get polyimides adhesive 2-3 part, dimethylformamide 1 part, mixes, put into glass beaker for subsequent use;
(3) the cloth sample of (1) step cutting is placed on sheet glass, smooth and stretch, at the mixing jelly that the two ends brushing step (2) on the two sides of cloth sample is prepared, cover face glass, make straightening of fibers and mutually vertical, fiber is prevented to be shifted or cloth destruction, 60-70 ° of solidification 1-2 hour;
(4) by stretching for the cloth sample after solidification, being cut to width in middle part is 25mm;
(5) cloth sample is put into clamp of tensile machine, carry out ultimate strength test.
2. the method for tested glass fibre ultimate strength according to claim 1, it is characterized in that: in described (2) step, in cloth sample, the length of gluing is: one end gluing length L1 is 90mm, other end gluing length L2 is 110mm.
3. the method for tested glass fibre ultimate strength according to claim 1, it is characterized in that: when described cloth sample puts into clamp of tensile machine, cloth sample one end is clamped in the upper grip of fixture, Width yarn is parallel to upper grip base, and other direction, perpendicular to upper grip base, ensures yarn uniform force, screw upper grip, lower chuck is stretched in cloth sample lower end, keeps upper and lower jaw separation to be 200mm, screws lower chuck.
4. the method for tested glass fibre ultimate strength according to claim 1, is characterized in that: when described cloth sample clamping is in fixture, between cloth sample and fixture, arrange sheet rubber.
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| CN201510817098.4A CN105352773B (en) | 2015-11-23 | 2015-11-23 | A kind of method for testing fiberglass products ultimate strength |
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| CN201510817098.4A CN105352773B (en) | 2015-11-23 | 2015-11-23 | A kind of method for testing fiberglass products ultimate strength |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367428A (en) * | 2017-07-17 | 2017-11-21 | 威海拓展纤维有限公司 | The method of testing of high modulus carbon fiber woven fabric tension failure strength |
| CN108362563A (en) * | 2018-04-17 | 2018-08-03 | 苏州市欣楠纺织科技有限公司 | A kind of textile Bursting Properties test pretreatment unit and preprocess method |
| CN108507846A (en) * | 2018-04-17 | 2018-09-07 | 苏州市欣楠纺织科技有限公司 | A kind of textile trapezoidal tear performance test pretreatment unit and preprocess method |
| CN108535109A (en) * | 2018-04-17 | 2018-09-14 | 苏州市欣楠纺织科技有限公司 | A kind of textile tensile property test pretreatment unit and preprocess method |
| CN108871953A (en) * | 2018-06-13 | 2018-11-23 | 扬州大学 | A method of for detecting fiber alkaline resistance properties |
| CN112730064A (en) * | 2020-12-29 | 2021-04-30 | 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 |
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| CN102980847A (en) * | 2012-11-27 | 2013-03-20 | 东南大学 | Method for testing bonding strength of asphalt pavement and road surface ice |
| CN104833573A (en) * | 2015-05-12 | 2015-08-12 | 陕西法士特齿轮有限责任公司 | Method for detecting tensile breaking force of polyacrylonitrile-based carbon fiber cloth |
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2015
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| JPH11211636A (en) * | 1998-01-30 | 1999-08-06 | Maeda Corp | Method for testing tensile strength of concrete |
| CN101329235A (en) * | 2007-06-18 | 2008-12-24 | 中国水产科学研究院东海水产研究所 | Method for testing strength of diamond polyamide warp knitting net sheet for net cage |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367428A (en) * | 2017-07-17 | 2017-11-21 | 威海拓展纤维有限公司 | The method of testing of high modulus carbon fiber woven fabric tension failure strength |
| CN108362563A (en) * | 2018-04-17 | 2018-08-03 | 苏州市欣楠纺织科技有限公司 | A kind of textile Bursting Properties test pretreatment unit and preprocess method |
| CN108507846A (en) * | 2018-04-17 | 2018-09-07 | 苏州市欣楠纺织科技有限公司 | A kind of textile trapezoidal tear performance test pretreatment unit and preprocess method |
| CN108535109A (en) * | 2018-04-17 | 2018-09-14 | 苏州市欣楠纺织科技有限公司 | A kind of textile tensile property test pretreatment unit and preprocess method |
| CN108871953A (en) * | 2018-06-13 | 2018-11-23 | 扬州大学 | A method of for detecting fiber alkaline resistance properties |
| CN112730064A (en) * | 2020-12-29 | 2021-04-30 | 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 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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