CN104237012A - Test device and test method for building structural adhesive bonding tensile stress relaxation - Google Patents
Test device and test method for building structural adhesive bonding tensile stress relaxation Download PDFInfo
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- CN104237012A CN104237012A CN201410474739.6A CN201410474739A CN104237012A CN 104237012 A CN104237012 A CN 104237012A CN 201410474739 A CN201410474739 A CN 201410474739A CN 104237012 A CN104237012 A CN 104237012A
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Abstract
The invention provides a test device and a test method for testing building structural adhesive bonding tensile stress relaxation. The test device comprises a fixed support, a tensioning device, a test piece, a fixture and a digital dynamometer, wherein the test piece is detachably mounted on the fixture and receives the tensile force from tensioning device through the fixture. The test method comprises the steps as follows: the cured test piece is assembled on the test device; a turnbuckle of the tensioning device is rotated to adjust the force applied to the test piece; the test device is entirely placed on an outdoor natural exposure field or selectively placed in a manual ageing chamber, so that the tensile stress under the corresponding ageing condition can be measured; the tensile stress after ageing is compared with the tensile stress before ageing, so that the tensile stress relaxation coefficient can be obtained. By the aid of the test device and the test method, building structural adhesive bonding tensile stress relaxation after various ageing tests can be tested, changes of the tensile stress can be monitored in real time, and a means is provided for evaluation of the bonding ageing durability and prediction of the service life of a building structural adhesive.
Description
Technical field
The invention belongs to construction structure glue technical field of measurement and test, be specifically related to a kind of proving installation for test architecture structure glue bonding tensile stress relaxation and method of testing.
Background technology
Construction structure glue (hereinafter referred to as structure glue) is construction bonds material conventional in building, the glass be generally used in building curtain wall and door and window is installed, there is higher cohesive strength, glass can be bonded in metal attached frames securely, also there is good ageing-resistant performance.At present, the ageing-resistant performance of evaluation structure glue is mainly by the change of the tensile bond strength of test bonding testing piece after the effects such as low temperature, high temperature, immersion and load cycle, carry out characterisation of structures glue by the ageing-resistant performance after external environmental factor effect, or after certain proportion length during by surely to stretch cementation test and test specimen is stretched to free state, observe the change of its bond damage situation to evaluate its ageing-resistant performance, such as People's Republic of China (PRC) standard GB/T 13477.9-GB/T 13477.15.
But there are two limitation in these technology existing: the problem of (1) bonding testing piece.Tensile propcrties is tested or is surely stretched cementation test and all adopts " H " type bonding testing piece, upper and lower two panels is glass, centre is the glue-line of one fixed width and thickness, and during test, pulling force is perpendicular to bonding interface, and in this and engineering reality, there is some difference for the force way of structure glue.In Practical Project, structure glue is also subject to the impact of glass deadweight, also will bear a shear stress at bonding interface place; (2) problem of monitoring continuously.Existing measuring technology can only obtain the situation of change of structure glue adhesive property after standing certain digestion period, and the data obtained are interrupted discontinuous, there is certain deficiency for the evaluation of its resistance to ag(e)ing and life appraisal.
Due to the viscoelasticity feature that structure glue has, reduce gradually when its Tensile produces power needed for a certain amount of deformation or stress along with the process applying stress, the phenomenon that this stress under constant strain is decayed in time, is called tensile stress relaxation.By the tensile stress relaxation of continuous monitoring of structures glue under different ageing environment, evaluate drawing stress with the situation of change of digestion time, can the aging rice seed of more scientifically evaluation structure glue.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, a kind of proving installation for test architecture structure glue bonding tensile stress relaxation and method of testing thereof are provided.
The object of first aspect present invention is to provide a kind of proving installation for test architecture structure glue bonding tensile stress relaxation, comprise fixed support, stretching device, test specimen, fixture and digital force-measuring instrument, above-mentioned fixed support is the framework that a front looks in hollow, comprise be parallel to each other opposed base plate and top board, and be parallel to each other opposed and be connected and fixed on the column between above-mentioned base plate and top board via welding or bolt; Above-mentioned stretching device is turnbuckle, fixes via the threaded rod of the component parts of above-mentioned turnbuckle and above-mentioned foot screws;
Above-mentioned test specimen is releasably installed on fixture, it comprises: the bonding substrates test specimen in C font is looked in side, with the bonded test specimen of a strip, above-mentioned bonded test specimen is positioned at the opening part of above-mentioned bonding substrates test specimen and its two ends bond respectively via structure glue and are fixed on above-mentioned bonding substrates test specimen, the width of the said structure glue at two ends, thickness and being consistent highly respectively;
Above-mentioned fixture comprises: the opposed up and down and front that opening is relative depending on side depending on be the upper grip of U-shaped and lower chuck and respectively spiral be fixed on the pin of above-mentioned upper grip and lower chuck, above-mentioned upper grip is fixed via the pulling force sensor spiral of threaded rod and above-mentioned digital force-measuring instrument, above-mentioned lower chuck is fixed via the threaded rod of the component parts of above-mentioned turnbuckle and above-mentioned stretching device spiral, above-mentioned bonding substrates test specimen is hung on above-mentioned upper grip via above-mentioned pin, and above-mentioned lower chuck is hung on above-mentioned bonded test specimen via above-mentioned pin;
Above-mentioned digital force-measuring instrument comprises pulling force sensor, and the upper end of this pulling force sensor is fixed via threaded rod and above-mentioned top board spiral, lower end is fixed via threaded rod and above-mentioned upper grip spiral;
The respective center line of above-mentioned fixed support, stretching device, test specimen, fixture, above-mentioned threaded rod, above-mentioned pulling force sensor is positioned on same pedal line.
Use above-mentioned proving installation of the present invention can the structure glue tensile stress relaxation Changing Pattern that calculates of Monitoring Data continuously, for the permanance of structure glue and life prediction provide basis.
The object of second aspect present invention is to provide a kind of proving installation for test architecture structure glue bonding tensile stress relaxation, this fixture also comprises side and looks in U-shaped, and the oppositely opposed up and down upper cartridge clip of the opening of U-shaped and lower cartridge clip, above-mentioned upper cartridge clip and above-mentioned lower cartridge clip to be linked via at least two pins by two pieces of opposed same sides of each leisure of sheet metal respectively and form, above-mentioned bonding substrates test specimen is hung on above-mentioned upper cartridge clip, above-mentioned upper cartridge clip is connected with above-mentioned upper grip via pin, above-mentioned bucket of trapping is hung on above-mentioned bonded base material test specimen and is connected with above-mentioned lower chuck via pin.
The object of third aspect present invention is to provide a kind of method of testing for test architecture structure glue bonding tensile stress relaxation, uses above-mentioned proving installation, comprises the following steps:
(1) making and the maintenance of test specimen is tested: first make test specimen, the bonding substrates test specimen of a processing C font, the surface treatment of this test specimen is consistent with Practical Project processing mode, then the bonded test specimen of a strip is processed, then above-mentioned bonded test specimen is placed in the opening part of above-mentioned bonding substrates test specimen, and the two ends of above-mentioned bonded test specimen bond respectively via structure glue and are fixed on above-mentioned bonding substrates test specimen, form test test specimen thus, the width of the said structure glue at two ends, thickness and being consistent highly respectively, bond closely knit, bubble-free, surface flushes,
Then carry out test piece maintenance process, the test specimen made is placed on temperature is (23 ± 2) DEG C, relative humidity is maintenance 28 days in the environment of (50 ± 5) %;
(2) installation of test specimen is tested: use the proving installation that claim 1 or 4 is above-mentioned, first the thread barrel of circumgyration stretch device, make the distance between upper grip, lower chuck be slightly smaller than the whole height of test specimen, then test specimen is connected with above-mentioned upper grip, lower chuck;
(3) aging test is carried out, gather different time tensile stress values: be placed in typical atmospheric physical environment by the above-mentioned proving installation being provided with test specimen, the thread barrel of circumgyration stretch device, tension threaded rod, make above-mentioned test specimen in vertical, be subject to a pulling force, by datalogger implementation record and display force value, reach design load until pulling force and after data stabilization, record incipient extension stress value F
0;
(4) reach regulation digestion time, record reaches tensile stress values during regulation digestion time, terminates test;
(5) the bonding tensile stress relaxation coefficients R of construction structure glue is calculated
t: according to formula R
t=F
t/ F
0calculate the tensile stress relaxation coefficient after specific digestion time t, wherein:
R
tfor the tensile stress relaxation coefficient after digestion time t,
F
0for incipient extension stress value F
0, unit be N,
F
tfor the tensile stress values through digestion time t, unit is N.
R
tsize represent that the performance of structure glue material repels stress relaxation is good and bad, i.e. the quality of structure glue ageing resistance.
The object of fourth aspect present invention is to provide a kind of method of testing for test architecture structure glue bonding tensile stress relaxation, and wherein, aging test adopts ageing oven to carry out.
Advantageous effect of the present invention is as follows:
1, the present invention implements the change of monitoring drawing stress by pulling force sensor and datalogger, and process of the test is uninterruptedly measured continuously, affects data fluctuations factor less, ensure that the accuracy of test result, repeatability and continuity.
2, can be positioned in atmospheric environment after this test unit installs test specimen and carry out heavy natural sunning test, bear the adhesive property change in some cycles after unaccelerated aging for model configuration glue, therefore the present invention can carry out the test of the aging bonding tensile stress relaxation of heavy natural sunning.
3, this test unit can also be assisted and be installed different ageing ovens, is arranged in ageing oven, realizes the test under the artificial ageing environment of difference by fixture and test specimen.
4, test material preparation method provided by the invention and method of testing solve traditional test specimen only by the problem of vertical tension, more conform to the practical engineering application operating mode of structure glue, test result for evaluation structure glue resistance to ag(e)ing and have more meaning serviceable life.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of proving installation of the present invention;
Fig. 2 is the structural representation of test specimen in proving installation of the present invention;
Fig. 3 is the schematic diagram that in proving installation of the present invention, fixture assembles via cartridge clip and test specimen, Fig. 3
(a) be front elevation, (b) of Fig. 3 is side view;
Fig. 4 be in proving installation of the present invention fixture directly and the schematic diagram that assembles of test specimen, Fig. 4's
A () is front elevation, (b) of Fig. 4 is side view;
Fig. 5 is the structural representation with the proving installation of environmental cabinet of the present invention;
Fig. 6 is the flow chart of steps of method of testing of the present invention.
Main Reference Numerals illustrates:
1-fixed support, 101-base plate, 102-column, 103-top board, 2-stretching device, 201-thread barrel, 202,203,5,7-threaded rod, 3-structure glue bonding testing piece, 301-C type bonding substrates test specimen, the bonded test specimen of 302-, 303-structure glue, 4 fixtures, 401-upper grip, 402-lower chuck, 403-pin, the upper cartridge clip of 404-, cartridge clip under 405-, 6-digital force-measuring instrument, 601-pulling force sensor, 602-data line, 603-datalogger, 8-ageing oven, 801-ageing oven running-on, 802-ageing oven bearing support.
Embodiment
Referring to accompanying drawing, in conjunction with specific embodiments, the present invention is described in detail.Figure of description of the present invention is in order to understand the present invention further, and schematic description and description of the present invention, for explaining the present invention, does not form limitation of the invention.
First the present invention provides a kind of proving installation for test structure glue bond tensile stress relaxation.As shown in Figure 1, this proving installation comprises: fixed support 1, stretching device 2, structure glue bonding testing piece (hereinafter referred to as test specimen) 3, fixture 4 and digital force-measuring instrument 6, wherein, fixed support 1, stretching device 2, fixture 4 and digital force-measuring instrument 6 are via threaded rod 202, 203, 5, 7 are interconnected successively, test specimen 3 is installed on fixture 4 removably, digital force-measuring instrument 6 comprises pulling force sensor 601 and via the connected datalogger 603 of data line 602, stretching device 2, test specimen 3, fixture 4, pulling force sensor 601 and above-mentioned threaded rod 202, 203, 5, the center line of 7 is positioned on same pedal line.
In more detail, as shown in Figure 1, fixed support 1 comprises: the base plate 101 being parallel to each other opposed and top board 103 and be parallel to each other opposed and be connected and fixed on two root posts 102,102 between base plate 101 and top board 103 via welding or bolt, and forming a front view is thus the framework of square shape.Wherein, base plate 101, top board 103 and two root posts 102,102 are mutually by weld or bolt is connected and fixed, a formation entirety thus.
Stretching device 2 is turnbuckle, for imposing tensile force to test specimen 3, it comprise thread barrel 201 and respectively spiral be connected to the threaded rod 203,202 of this thread barrel upper/lower terminal.One end of stretching device 2 is fixed via base plate 101 spiral of threaded rod 202 with fixed support 1, and here, threaded rod 202 is that the component parts of stretching device 2 has again function stretching device 2 and base plate 101 are connected and fixed concurrently.The other end of stretching device 2 is connected and fixed via lower chuck 402 spiral of threaded rod 203 with fixture 4, and similarly, herein, threaded rod 203 is that the component parts of stretching device 2 has again function stretching device 2 and lower chuck 402 are connected and fixed concurrently.The thread barrel 201 of circumgyration stretch device 2, can realize applying a drawing stress to test specimen 3.
As shown in Figure 2, test specimen 3 is the test specimen for test structure glue bond tensile stress relaxation, comprise the bonding substrates test specimen (hereinafter referred to as base material test specimen) 301 that a lateral plan is C font, with the bonded test specimen 302 of a strip, the bonded test specimen 302 of strip is positioned at the opening part of the base material test specimen 301 of C font, its two ends bond fixing respectively with base material test specimen 301 via structure glue 303, above-mentioned two ends, to bond the width of fixing structure glue 303 with base material test specimen 301, height and thickness are consistent respectively, form test specimen 3 thus, structure glue 303 can be structural silicone adhesive.
Fig. 3 is the schematic diagram that fixture 4 assembles via cartridge clip and test specimen 3, and (a) of Fig. 3 is the front elevation of assembling, and (b) of Fig. 3 is the side view of assembling.As shown in Figure 3, fixture 4 is in order to install test specimen 3, and it comprises: the opposed up and down and front that opening is relative depending on side depending on being upper grip 401 and the lower chuck 402 of U-shaped; Opposed up and down and opening is reverse side is considered as the upper cartridge clip 404 of U-shaped and lower cartridge clip 405; And by pin 403 that upper and lower chuck 401,402 is connected with test specimen 3 respectively with upper and lower cartridge clip 404,405.Upper grip 401 is connected via the lower end of threaded rod 5 with pulling force sensor 601.Wherein, upper and lower chuck 401,402 can be obtained by metal materials such as low-carbon alloy steel, medium carbon steel, structural alloy steels; Upper and lower cartridge clip 404,405 is respectively two pieces of opposed sheet metals, and in the present embodiment, the wall thickness of this sheet metal is 10mm, and material is metal alloy, ensures, in drawing process, obvious distortion does not occur.These two pieces opposed same ends of each leisure of sheet metal separate certain intervals via at least two pins and link, thus form the upper and lower cartridge clip that two sides are considered as U-shaped.The size of upper and lower chuck and the size of upper and lower cartridge clip are suitable to be suitable for clamping test pieces 3.As shown in Figure 3, test specimen 3 is connected with upper and lower chuck via upper and lower cartridge clip, specifically: be placed between its two pieces of sheet metals in the mode being hung on upper cartridge clip 404 by the base material test specimen 301 of test specimen 3, upper cartridge clip 404 is connected with upper grip 401 via pin 403; Made between its two pieces of sheet metals being placed in lower cartridge clip 405 in the mode of the bonded test specimen 302 being hung on test specimen 3 by lower cartridge clip 405, lower cartridge clip 405 is connected with lower chuck 402 via pin 403, and like this, test specimen 3 accepts Uniform Tension load via upper and lower cartridge clip.
In addition, as shown in Figure 4, also can not adopt upper and lower cartridge clip 404,405 and upper and lower chuck 401,402 is directly connected with test specimen 3 respectively.The front elevation that (a) of Fig. 4 assembles for test specimen 3 and fixture 4, (b) of Fig. 4 is side view.As shown in Figure 4, base material test specimen 301 is placed in the U-shaped recess of upper grip 401, and is hung on upper grip 401 via pin 403, similarly, bonded test specimen 302 is placed in the U-shaped recess of lower chuck 402, and lower chuck 402 is hung on bonded test specimen 302 via pin 403.Thus, test specimen 3 accepts pulling force via above-mentioned pin, and one-piece construction can be made so more succinct.
As shown in Figure 1, pulling force sensor 601 and data line 602, datalogger 603 form a set of digital force-measuring instrument 6 jointly, the upper/lower terminal of pulling force sensor 601 is connected and fixed respectively via the top board 103 of threaded rod 7 and threaded rod 5 and fixed support 1 and upper fixture 401 respectively, datalogger 603 is fixed on one in two columns 102,102 of fixed support 1, and one end of pulling force sensor 601 is electrically connected with datalogger 603 via data line 602.Digital force-measuring instrument 6 and its pulling force sensor 601 can be selected according to test needs, and in the present invention, digital force-measuring instrument 6 selects model to be the digital force-measuring instrument of SH-50K, and pulling force sensor 601 selects CFBLS-1 type pulling force sensor, and sensitivity is 0.03.Manually rotate thread barrel 201 pairs of fixtures 4 and apply tensile force, this tensile force passes to digital force-measuring instrument 6 via threaded rod.
Proving installation of the present invention is also applicable to the accelerated aging test of structure glue bonding, realizes the test under the artificial ageing environment of difference thus.Fig. 5 is the structural representation with the proving installation of ageing oven of the present invention.As shown in Figure 5, can by ageing oven 8 via metal support unit 802 and fixed support 1 two columns 102,102 respectively bolt be connected and fixed, and keep stable, test specimen 3 and fixture 4 are built in ageing oven 8.Ageing oven 8 can select high/low temperature cyclic test case general on market to circulate aging test for high/low temperature, the top of this ageing oven 8 and the center of bottom have ageing oven running-on 801, be convenient to the movement of threaded rod in ageing oven, running-on position should keep motion good and sealing.Other parts and connected mode are all identical with Fig. 1, omit repeat specification here.
The present invention also provides a kind of method of testing for test architecture structure glue bonding tensile stress relaxation, this method of testing drives the lower chuck 402 of fixture 4 to move downwards by adopting stretching device 2, and upper grip 401 keeps motionless, the combined action of tensile force and shearing force is produced with the adhesive surface place of base material test specimen 301, bonded test specimen 302 like this in the structure glue 303 of test specimen 3, utilize digital force-measuring instrument 6 to monitor the change of test specimen 3 different time tensile stress values under different aging conditions, thus the tensile stress relaxation of structure glue can be calculated.The inventive method is fairly simple, practical, reliable test result, representative.
Fig. 6 is the flow chart of steps of method of testing of the present invention.As shown in Figure 6, this method of testing uses above-mentioned proving installation, realizes especially by following steps:
Step one (S1): the making of test test specimen and maintenance.
First make test specimen, the base material test specimen 301 (Fig. 2) of a processing C font, the surface treatment of this base material test specimen is consistent with Practical Project processing mode; The bonded test specimen 302 of a processing strip, is placed on the opening part of C font base material test specimen 301, and two ends bond fixing respectively with base material test specimen 301 via structure glue 303, form test specimen 3 thus.The width of two ends bonding structure glue 303, height and thickness are consistent respectively, and bond closely knit, bubble-free, and surface flushes.In the present embodiment, the cross section of the bonded test specimen 302 of strip is the square of 10mm × 10mm, and the thickness of structure glue 303 is 6mm ~ 12mm.Before test, first maintenance process is carried out to test specimen 3, the test specimen 3 made is positioned over temperature is (23 ± 2) DEG C, relative humidity is maintenance 28 days in the standard environment of (50 ± 5) %.
Step 2 (S2): the installation of test test specimen.
Use the above-mentioned proving installation for test architecture structure glue bonding tensile stress relaxation, first the thread barrel 201 of above-mentioned stretching device 2 is rotated, the distance between upper grip 401, lower chuck 402 is made to be slightly smaller than the whole height of test specimen 3, then test specimen 3 is directly connected with upper grip 401, lower chuck 402 via pin 403, or test specimen 3 is connected with upper grip 401, lower chuck 402 (Fig. 3,4) with lower cartridge clip 405 via upper cartridge clip 404.
Step 3 (S3): carry out aging test, implements to gather different time tensile stress values.
Proving installation entirety with test specimen 3 is placed in typical atmospheric environment and carries out heavy natural sunning aging test.The thread barrel 201 of circumgyration stretch device 2, strain threaded rod 202 and threaded rod 203 thus, make test specimen 3 in vertical, be subject to a pulling force, this pulling force passes to datalogger 603 by the pulling force sensor 601 of digital force-measuring instrument 6 via data line 602, by datalogger 603 implementation record and display force value, after the value of thrust data stabilization that pulling force reaches design load and datalogger 603 shows, record incipient extension stress value F
0, digital force-measuring instrument and its pulling force sensor can be selected according to test needs, and in the present invention, digital force-measuring instrument 6 selects model to be the digital force-measuring instrument of SH-50K, and pulling force sensor 601 selects CFBLS-1 type pulling force sensor, and sensitivity is 0.03.
It is exposed to the sun field, cold climate of representational Qionghai be exposed to the sun field and dry hot climate of representational Mo River is be exposed to the sun field in representational Turfan that China's typical air heavy natural sunning field has with moist climate, and is distributed in other atmospheric environment heavy natural sunning fields of various places.Testing field of being exposed to the sun can be selected as required.
In order to carry out aging test, can also in test specimen region, i.e. surrounding's installation ageing oven 8 of test specimen 3 and fixture 4, manual shift aging test environment, the tensile stress values under record continuous ageing test condition, and provide stress-time changing curve.Concrete force method and collecting method etc. are identical with above-mentioned steps three, repeat no more here.
Step 4 (S4): reach regulation digestion time, record reaches stress value during regulation digestion time, terminates test.
Along with the increase of digestion time, tensile stress values changes, and datalogger 603 can record the situation of change of value of thrust continuously, when have passed through digestion time t, when reaching regulation digestion time, records the size F of the tensile stress values of this time point
t, terminate test.
Step 5 (S5): the bonding tensile stress relaxation coefficients R calculating construction structure glue
t.
The tensile stress relaxation coefficient after specific digestion time t is calculated, that is: according to formula (1)
R
t＝F
t/F
0 (1)
In formula,
R
tfor the tensile stress relaxation coefficient after digestion time t;
F
0for incipient extension stress value F
0, unit is N;
F
tfor the tensile stress values through digestion time t, unit is N.
F
t/ F
0ratio be the tensile stress relaxation coefficients R after specific digestion time t
t, the size of this coefficient represents that the performance of structure glue material repels stress relaxation is good and bad, i.e. the quality of structure glue ageing resistance.R
tlarger, show that the performance of structure glue opposing stress relaxation is better, R
tless, show that the performance of structure glue opposing stress relaxation is poorer.According to the structure glue tensile stress relaxation Changing Pattern that continuous Monitoring Data calculates, for the permanance of structure glue and life prediction provide basis.
Embodiment 1: the stress relaxation coefficient of tested glass and fluorocarbon-sprayed aluminum alloy bonding base material
Test specimen: adopt glass and the fluorocarbon-sprayed aluminium alloy of bonded base material, according to step one (S1) preparation and maintenance test specimen, test specimen is connected with fixture via upper and lower cartridge clip.
Wherein, base material test specimen adopts fluorocarbon-sprayed aluminum alloy bonding base material, and cross section is 12mm × 10mm; Be glass by bonding test specimen, be of a size of 100mm × 12mm × 5mm;
Structure glue is: two component structural silicone adhesive, adhesive surface are of a size of: 12mm × 5mm,
Incipient extension power F
0for: 200N; Aging condition is: laboratory normal temperature environment is placed naturally, and temperature is (23 ± 2) DEG C, relative humidity is (50 ± 5) %; Digestion time is: 7 days,
The result of test: the stretching force value F recorded after 7 days
tfor 120N, the result tensile stress relaxation coefficients R of evaluation
t=F
t/ F
0=120N/200N=0.6.
Embodiment 2: the stress relaxation coefficient of tested glass and fluorocarbon-sprayed aluminum alloy bonding base material
Adopt ageing oven, other condition is with embodiment 1.
Identical test specimen, being placed on temperature is in the ageing oven of 40 DEG C after aging 7 days, the stretching force value F recorded
tfor 30N, then tensile stress relaxation coefficient at this moment reduces, and is R
t=F
t/ F
0=30N/200N=0.15.This shows, structure glue is under high temperature ageing-stress coupling action condition, and its inner cohesiveness declines.
Proving installation of the present invention and method of testing also can be used for the tensile stress relaxation test of other materials that are bonded and sealed, such as building sealant etc.
Claims (9)
1., for a proving installation for test architecture structure glue bonding tensile stress relaxation, comprising: fixed support, stretching device, test specimen, fixture and digital force-measuring instrument, is characterized in that:
Described fixed support is the framework that a front looks in hollow, comprises be parallel to each other opposed base plate and top board, and is parallel to each other opposed and is connected and fixed on the column between described base plate and top board via welding or bolt;
Described stretching device is turnbuckle, fixes via the threaded rod of the component parts of described turnbuckle and described foot screws;
Described test specimen is releasably installed on fixture, it comprises: the bonding substrates test specimen in C font is looked in side, with the bonded test specimen of a strip, described bonded test specimen is positioned at the opening part of described bonding substrates test specimen and its two ends bond respectively via structure glue and are fixed on described bonding substrates test specimen, the width of the described structure glue at two ends, thickness and being consistent highly respectively;
Described fixture comprises: the opposed up and down and front that opening is relative depending on side depending on be the upper grip of U-shaped and lower chuck and respectively spiral be fixed on the pin of described upper grip and lower chuck, described upper grip is fixed via the pulling force sensor spiral of threaded rod and described digital force-measuring instrument, described lower chuck is fixed via the threaded rod of the component parts of described turnbuckle and described stretching device spiral, described bonding substrates test specimen is hung on described upper grip via described pin, and described lower chuck is hung on described bonded test specimen via described pin;
Described digital force-measuring instrument comprises pulling force sensor, and the upper end of this pulling force sensor is fixed via threaded rod and described top board spiral, lower end is fixed via threaded rod and described upper grip spiral;
The respective center line of described fixed support, stretching device, test specimen, fixture, described threaded rod, described pulling force sensor is positioned on same pedal line.
2., as claimed in claim 1 for the proving installation of test architecture structure glue bonding tensile stress relaxation, it is characterized in that: described upper grip and described lower chuck are selected from the one in low-carbon alloy steel, medium carbon steel, structural alloy steel.
3., as claimed in claim 1 for the proving installation of test architecture structure glue bonding tensile stress relaxation, it is characterized in that: described structure glue is structural silicone adhesive.
4. as claimed any one in claims 1 to 3 for the proving installation of test architecture structure glue bonding tensile stress relaxation, it is characterized in that: described fixture also comprises side and looks in U-shaped, and the oppositely opposed up and down upper cartridge clip of the opening of U-shaped and lower cartridge clip, described upper cartridge clip and described lower cartridge clip to be linked via at least two pins by two pieces of opposed same sides of each leisure of sheet metal respectively and form, described bonding substrates test specimen is hung on described upper cartridge clip, described upper cartridge clip is connected with described upper grip via pin, described bucket of trapping is hung on described bonded base material test specimen and is connected with described lower chuck via pin.
5. the proving installation for test architecture structure glue bonding tensile stress relaxation according to any one of Claims 1-4, it is characterized in that: also comprise ageing oven, this ageing oven links via metal support portion and described support bracket fastened two described upstanding studs, the top of this ageing oven and the center of bottom offer the ageing oven running-on that threaded rod moves respectively, and described test specimen and described fixture are built in this ageing oven.
6. for a method of testing for test architecture structure glue bonding tensile stress relaxation, it is characterized in that: use the proving installation for test architecture structure glue bonding tensile stress relaxation described in claim 1 or 4, comprise the following steps:
(1) making and the maintenance of test specimen is tested: first make test specimen, the bonding substrates test specimen of a processing C font, the surface treatment of this test specimen is consistent with Practical Project processing mode, then the bonded test specimen of a strip is processed, then described bonded test specimen is placed in the opening part of described bonding substrates test specimen, and the two ends of described bonded test specimen bond respectively via structure glue and are fixed on described bonding substrates test specimen, form test test specimen thus, the width of the described structure glue at two ends, thickness and being consistent highly respectively, bond closely knit, bubble-free, surface flushes,
Then carry out test piece maintenance process, the test specimen made is placed on temperature is (23 ± 2) DEG C, relative humidity is maintenance 28 days in the environment of (50 ± 5) %;
(2) installation of test specimen is tested: use the proving installation described in claim 1 or 4, first the thread barrel of circumgyration stretch device, make the distance between upper grip, lower chuck be slightly smaller than the whole height of test specimen, then test specimen is connected with described upper grip, lower chuck;
(3) aging test is carried out, gather different time tensile stress values: be placed in typical atmospheric physical environment by the described proving installation being provided with test specimen, the thread barrel of circumgyration stretch device, tension threaded rod, make described test specimen in vertical, be subject to a pulling force, by datalogger implementation record and display force value, reach design load until pulling force and after data stabilization, record incipient extension stress value F
0;
(4) reach regulation digestion time, record reaches tensile stress values during regulation digestion time, terminates test;
(5) the bonding tensile stress relaxation coefficients R of construction structure glue is calculated
t: according to formula R
t=F
t/ F
0calculate the tensile stress relaxation coefficient after specific digestion time t, wherein:
R
tfor the tensile stress relaxation coefficient after digestion time t,
F
0for incipient extension stress value F
0, unit be N,
F
tfor the tensile stress values through digestion time t, unit is N.
7., as claimed in claim 6 for the method for testing of test architecture structure glue bonding tensile stress relaxation, it is characterized in that:
Described typical air physical environment is selected from: be exposed to the sun field, cold climate of representational Qionghai with moist climate be exposed to the sun field, dry hot climate of representational Mo River be exposed to the sun field and the one that is distributed in other atmospheric environment heavy natural sunning fields of various places in representational Turfan.
8. for a method of testing for test architecture structure glue bonding tensile stress relaxation, it is characterized in that: use the proving installation for test architecture structure glue bonding tensile stress relaxation described in claim 5, comprise the following steps:
(1) making and the maintenance of test specimen is tested: first make test specimen, the bonding substrates test specimen of a processing C font, the surface treatment of this test specimen is consistent with Practical Project processing mode, then the bonded test specimen of a strip is processed, then described bonded test specimen is placed in the opening part of described bonding substrates test specimen, and the two ends of described bonded test specimen bond respectively via structure glue and are fixed on described bonding substrates test specimen, form test test specimen thus, the width of the described structure glue at two ends, thickness and being consistent highly respectively, bond closely knit, bubble-free, surface flushes,
Then carry out test piece maintenance process, the test specimen made is placed on temperature is (23 ± 2) DEG C, relative humidity is maintenance 28 days in the environment of (50 ± 5) %;
(2) installation of test specimen is tested: use the proving installation described in claim 5, first the thread barrel of circumgyration stretch device, make the distance between upper grip, lower chuck be slightly smaller than the whole height of test specimen, then described test specimen is connected with described upper grip, lower chuck;
(3) aging test is carried out, gather different time tensile stress values: the experimental enviroment of setting ageing oven, the thread barrel of circumgyration stretch device, tension threaded rod, make described test specimen in vertical, be subject to a pulling force, by datalogger implementation record and display force value, reach design load until pulling force and after data stabilization, record incipient extension stress value F
0;
(4) reach regulation digestion time, record reaches tensile stress values during regulation digestion time, terminates test;
(5) the bonding tensile stress relaxation coefficients R of construction structure glue is calculated
t: according to formula R
t=F
t/ F
0calculate the tensile stress relaxation coefficient after specific digestion time t, wherein:
R
tfor the tensile stress relaxation coefficient after digestion time t,
F
0for incipient extension stress value F
0, unit be N,
F
tfor the tensile stress values through digestion time t, unit is N.
9. the method for testing for test architecture structure glue bonding tensile stress relaxation according to claim 6 or 7 or 8, it is characterized in that: tensile stress relaxation coefficient is larger, show that the performance of structure glue opposing stress relaxation is better, tensile stress relaxation coefficient is less, shows that the performance of structure glue opposing stress relaxation is poorer.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482469A (en) * | 2009-02-13 | 2009-07-15 | 西北农林科技大学 | Method for testing interface shear strength of sample bonded by sealant and bonded substrate |
| CN101509868A (en) * | 2009-02-18 | 2009-08-19 | 西北农林科技大学 | Method for testing interface shear strength of sample bonded by sealant and bonded substrate |
| CN201594067U (en) * | 2010-01-19 | 2010-09-29 | 李晓明 | Building binding tension tensile property detecting instrument |
| CN201740693U (en) * | 2010-05-26 | 2011-02-09 | 中国电器科学研究院 | Stress loading device for natural solarization |
| CN102053062A (en) * | 2010-12-08 | 2011-05-11 | 中国建筑科学研究院 | Structural adhesive on-site detection method and device |
| CN103969180A (en) * | 2013-02-05 | 2014-08-06 | 中国建筑科学研究院 | Method for testing adhesive property of silicone structure sealant for existing curtain wall |
| CN204165835U (en) * | 2014-09-17 | 2015-02-18 | 中国建材检验认证集团股份有限公司 | For the proving installation of building structure glue bond tensile stress relaxation |
-
2014
- 2014-09-17 CN CN201410474739.6A patent/CN104237012B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482469A (en) * | 2009-02-13 | 2009-07-15 | 西北农林科技大学 | Method for testing interface shear strength of sample bonded by sealant and bonded substrate |
| CN101509868A (en) * | 2009-02-18 | 2009-08-19 | 西北农林科技大学 | Method for testing interface shear strength of sample bonded by sealant and bonded substrate |
| CN201594067U (en) * | 2010-01-19 | 2010-09-29 | 李晓明 | Building binding tension tensile property detecting instrument |
| CN201740693U (en) * | 2010-05-26 | 2011-02-09 | 中国电器科学研究院 | Stress loading device for natural solarization |
| CN102053062A (en) * | 2010-12-08 | 2011-05-11 | 中国建筑科学研究院 | Structural adhesive on-site detection method and device |
| CN103969180A (en) * | 2013-02-05 | 2014-08-06 | 中国建筑科学研究院 | Method for testing adhesive property of silicone structure sealant for existing curtain wall |
| CN204165835U (en) * | 2014-09-17 | 2015-02-18 | 中国建材检验认证集团股份有限公司 | For the proving installation of building structure glue bond tensile stress relaxation |
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