CN115901611A - Preparation tool and sample preparation method for structural adhesive bonding test sample - Google Patents
Preparation tool and sample preparation method for structural adhesive bonding test sample Download PDFInfo
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- CN115901611A CN115901611A CN202111156534.XA CN202111156534A CN115901611A CN 115901611 A CN115901611 A CN 115901611A CN 202111156534 A CN202111156534 A CN 202111156534A CN 115901611 A CN115901611 A CN 115901611A
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Abstract
The invention discloses a structural adhesive bonding test sample preparation tool which comprises a substrate, wherein a main fixing base and an auxiliary fixing base which are equal in height are respectively arranged at two ends of the substrate, a side fixing device is arranged on the side face of the main fixing base or the auxiliary fixing base, upper fixing devices are respectively arranged on the upper surfaces of the main fixing base and the auxiliary fixing base, a positioning identification device is arranged at the inner end of the upper surface of the main fixing base or the auxiliary fixing base, and a plurality of positioning pins are arranged at intervals on the side edges of the upper surfaces of the main fixing base and the auxiliary fixing base. Utilize fixed and the fixed substrate monolithic of side fixing device of last fixing device to carry out the rubber coating, fix two substrate monoliths respectively on main fixed baseplate and vice fixed baseplate through last fixing device and dock, can satisfy simultaneously that preparation tensile shear strength sample and T type peel off the sample to compatible multiple size specification, system appearance convenient operation is accurate, efficient.
Description
Technical Field
The invention relates to a tool and a method for preparing a sample by using the tool, in particular to a tool for preparing a structural adhesive bonding test sample and a sample preparation method.
Background
The determination of the tensile shear strength of the adhesive (rigid material to rigid material) in the national standard GB/T7124-2008 is equivalent to the international standard ISO4587-2003, and the specification defines the size specification of the sample, the manufacturing requirements of the sample and the test step method. The standard states that samples can be prepared either as flat plates or as individual pieces. With flat panel fabrication, machining methods for cutting into test specification specimens need to be considered to avoid mechanical damage (including excessive heating). Meanwhile, the standard strongly recommends that a clamp is used for accurately positioning a gluing piece, but the structural design requirement of a sample preparation tool for ensuring the sample preparation precision is not provided clearly.
Two sample preparation methods are mentioned in the standard: one is to make the sample by a flat plate and then cut the sample into standard samples by a mechanical processing method. For the sample preparation mode, the size of a flat plate is large, a large fixing and positioning clamp needs to be developed, the area of a bonding area is large, the gluing uniformity and continuity are not easy to control, and after the base material single pieces are attached, the base material single pieces need to be screwed up and pressed by means of a metal pressing block and a bolt. On the one hand, the excessive glue of dull and stereotyped below is difficult to handle, and on the other hand, briquetting packing force is too big, and easy crushing control glue film thickness glass pearl, substrate monolithic laminate each other leads to the glue film cavity, and the sample is inefficacy. The flat plate sample needs to be fixed on a clamp and put into equipment for baking and hardening, is not easy to move and has low efficiency. And finally, when the flat plate sample is mechanically cut, in order to avoid mechanical and thermal damage, the requirement on equipment is high, the requirement on sample cutting is not easily met by common equipment, and the difficulty in sample preparation and processing is increased. In a word, if a flat plate is adopted for preparing a sample, the requirement on the manufacturing process is high, the sample preparation efficiency is low and the qualified rate of the structural adhesive sample is low. And the other is single chip manufacturing, referring to international standard requirements, firstly processing and manufacturing a substrate single chip meeting the specification required by a test sample, positioning and fixing the substrate single chip, gluing, adding 0.2mm glass bead particles to control the thickness of a glue layer, then selecting another substrate single chip to press the glue layer, simultaneously controlling the overlapping area of the glue layer, clamping and fixing by a clamp, and baking and hardening.
And compared with the flat plate manufacturing, the single plate manufacturing has low requirements on the size of the fixed positioning tool, the tool size is small, the weight is light, the carrying is convenient, and the flexibility is high. Does not need secondary processing equipment for flat plate samples, can better ensure the quality of single-chip manufactured samples and has high efficiency
In addition to the standard size of the tensile shear strength sample of the adhesive specified in the national standard, the peel strength of the structural adhesive is also one of important indexes for inspecting the strength of the structural adhesive, and the structural adhesive also has the corresponding specification requirement of the peel sample. From the aspect of structural adhesive performance research, the preparation and strength measurement of structural adhesive samples with different base materials, thicknesses and overlapping areas can be considered.
Therefore, the manufacturing tool clamp for the structural adhesive sample meeting the testing requirements and meeting the requirements of multiple specifications, high efficiency and high yield is particularly important.
Disclosure of Invention
The invention aims to provide a structural adhesive bonding test sample preparation tool meeting the requirements of multiple specifications, high efficiency and high yield and a sample preparation method using the tool.
In order to solve the technical problem, the technical scheme of the invention is as follows:
the utility model provides a bonding test sample preparation frock is glued to structure, includes the base plate, the base plate both ends are provided with equal high main fixed baseplate and vice fixed baseplate respectively, main fixed baseplate or vice fixed baseplate side are provided with side fixing device, main fixed baseplate with vice fixed baseplate upper surface is provided with fixing device respectively, main fixed baseplate or vice fixed baseplate upper surface inner is provided with location identification means, main fixed baseplate with vice fixed baseplate upper surface side reason is arranged respectively and is provided with a plurality of locating pins.
The upper fixing device comprises an upper fixing pressing block and a movable limiting block, the corresponding positions of the upper fixing pressing block and the top surface of the main fixing base or the auxiliary fixing base are mutually matched with each other to form positioning bolt holes, and fastening bolts are arranged in a manner of being matched with the positioning bolt holes; two strip-shaped holes are arranged in parallel on the movable limiting block, the top surface of the auxiliary fixing base corresponds to two of the strip-shaped holes, and the strip-shaped holes are provided with positioning bolt holes, and fastening bolts are arranged on the strip-shaped holes and the positioning bolt holes in a matching mode.
The side fixing device is arranged on the side face of the main fixing base, the positioning identification device is arranged at the inner end of the upper surface of the main fixing base, the upper fixing pressing block is arranged at the outer end of the upper surface of the main fixing base, and the positioning identification device and the positioning pin are arranged on the side edge between the upper fixing pressing block and the main fixing base.
The outer end of the upper surface of the auxiliary fixed base is provided with the movable limiting block, the upper surface of the auxiliary fixed base is located at the inner end of the movable limiting block and is provided with the upper fixed pressing block, and the edge of the inner end of the upper fixed pressing block, which is located on the upper surface of the auxiliary fixed base, is provided with the positioning pin.
The side fixing device comprises a side pressing block, the side pressing block is matched with the corresponding position of the side face of the main fixing base to be provided with a positioning bolt hole, and the positioning bolt hole is provided with a fastening bolt in a matched mode.
The positioning and marking device comprises a plurality of equidistant parallel scale marks, and the scale marks transversely penetrate through the upper surface of the main fixed base.
The positioning pins are arranged in pairs on the main fixing base or the auxiliary fixing base, and the positioning pins are all arranged along a straight line.
The method comprises the following steps of:
firstly, preparing a plurality of base material single sheets of tensile shear strength samples meeting the size requirement;
secondly, marking one end of the first substrate single sheet according to the length requirement of the bonding surface of the standard sample, and marking a bonding area;
thirdly, loosening the fastening bolt to dismount the upper fixing pressing block of the main fixing base, placing the first substrate single sheet between the upper fixing pressing block and the main fixing base, aligning the first substrate single sheet scribing line with the corresponding positioning identification device of the main fixing base, enabling the side edge of the first substrate single sheet to abut against the positioning pin, and screwing the fastening bolt to enable the upper fixing pressing block to tightly press the first substrate single sheet;
loosening fastening bolts, dismounting an upper fixing press block of the auxiliary fixing base, firstly placing a second substrate single piece with the same thickness as the substrate single piece on the main fixing base to adjust the height, compensating the lapping thickness difference, and pre-positioning a third substrate single piece by moving the movable limiting block; the pre-positioning can adopt a mode that one end of the third substrate single piece is aligned with the scribing position of the first substrate single piece, the other end of the third substrate single piece is limited by moving the movable limiting block, and the third substrate single piece is taken down after the movable limiting block is fixed;
fifthly, adding structural adhesive in the bonding area of the first substrate single sheet, carrying out homogenization treatment, and adding a certain amount of glass beads in the structural adhesive in the bonding area;
sixthly, stacking a third substrate single sheet on the second substrate single sheet, wherein the side edge of the third substrate single sheet abuts against a positioning pin of the auxiliary fixing base, the end part of the third substrate single sheet abuts against a movable limiting block to enable the inner end of the third substrate single sheet to align with the scribing position of the first substrate single sheet, pressing downwards, screwing a fastening bolt to fix an upper fixing pressing block, and further fixing the position of the third substrate single sheet;
seventhly, homogenizing and pressing a structural adhesive bonding area formed by overlapping the first substrate single chip and the third substrate single chip to bond the first substrate single chip and the third substrate single chip into a tensile shear strength sample, and performing adhesive overflow treatment on the tensile shear strength sample;
step eight, clamping a bonding area of the tensile shear strength sample by using a clamp, and ensuring that continuous structural adhesive overflows from the periphery of the bonding area;
and step nine, loosening the fastening bolt, detaching the upper fixed pressing block, and taking out the tensile shear strength sample.
T-shaped stripping sample preparation comprises the following steps:
firstly, preparing an L-shaped base material single sheet required by a T-shaped stripping sample;
secondly, placing the first L-shaped substrate single sheet between the side pressing block and the main fixing base for fixing, enabling the bonding area of the first L-shaped substrate single sheet to face upwards, adding structural adhesive in the bonding area and carrying out homogenization treatment, and adding a certain amount of glass beads in the structural adhesive;
thirdly, loosening the side pressing block to take out a first L-shaped base material single sheet, placing the first L-shaped base material single sheet on the upper surface of the main fixing base, enabling the side edge to abut against the positioning pin, and fixing the first L-shaped base material single sheet by using the upper fixing pressing block;
fourthly, selecting a second L-shaped substrate single sheet, placing the second L-shaped substrate single sheet on the upper surface of the main fixing base, enabling the side edge of the second L-shaped substrate single sheet to abut against the positioning pin, pushing the second L-shaped substrate single sheet to the first L-shaped substrate single sheet until the bonding areas of the first L-shaped substrate single sheet and the second L-shaped substrate single sheet are bonded to form a T-shaped stripping sample, carrying out uniform compression on the bonding area of the T-shaped stripping sample, and scraping excessive glue;
and fifthly, clamping the bonding area of the T-shaped stripping sample by using a clamp, ensuring that structural adhesive continuously overflows from the periphery of the bonding area, unscrewing a pressing block bolt, removing a pressing block, and taking out the T-shaped stripping sample.
By adopting the technical scheme, the base material single sheet for fixing the tensile shear strength sample by the upper fixing device is used for gluing during sample preparation, the base material single sheet for fixing the T-shaped stripping sample by the side fixing device is used for gluing, and the two base material single sheets are respectively fixed on the main fixing base and the auxiliary fixing base by the upper fixing device for butt joint, so that the requirements for preparing the tensile shear strength sample and the T-shaped stripping sample can be met simultaneously, various size specifications are compatible, the sample preparation operation is convenient and accurate, and the efficiency is high.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a schematic drawing of a tensile shear strength specimen fabrication of the present invention;
FIG. 2 is a schematic side view of a T-shaped peel sample according to the present invention;
FIG. 3 is a schematic representation of the T-peel sample bonding of the present invention.
In the figure: 1-a substrate; 2-a main fixed base; 3-an auxiliary fixed base; 4-scale marking; 5-positioning pins; 6-fixing a pressing block; 7-a movable limiting block; 8-positioning bolt holes; 9-strip-shaped holes; 10-side briquetting; 11-a first substrate monolith; 12-a second substrate monolith; 13-a third substrate monolith; 14-a first L-shaped substrate monolith; 15-a second L-shaped substrate monolith.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive on the scope of the claims.
As shown in fig. 1, 2 and 3, a structural adhesive bonding test sample preparation tool comprises a substrate 1, wherein a main fixing base 2 and an auxiliary fixing base 3 with equal heights are respectively arranged at two ends of the substrate 1, a side fixing device is arranged on the side face of the main fixing base 2 or the auxiliary fixing base 3, an upper fixing device is respectively arranged on the upper surface of the main fixing base 2 or the upper surface of the auxiliary fixing base 3, a positioning identification device is arranged at the inner end of the upper surface of the main fixing base 2 or the upper surface of the auxiliary fixing base 3, and a plurality of positioning pins 5 are respectively arranged on the side edge of the upper surface of the main fixing base 2 or the upper surface of the auxiliary fixing base 3.
The base material single chip of utilizing the fixed tensile shear strength sample of fixing device to carry out the rubber coating during system appearance, peel off the base material single chip of sample through the fixed T type of side fixing device and carry out the rubber coating, fix two base material single chips respectively on main fixed baseplate 2 and vice fixed baseplate 3 through last fixing device and dock, can satisfy simultaneously that preparation tensile shear strength sample and T type peel off the sample to compatible multiple size specification, system appearance convenient operation is accurate, efficient.
The upper fixing device comprises an upper fixing pressing block 6 and a movable limiting block 7, the upper fixing pressing block 6 is matched with the corresponding position of the top surface of the main fixing base 2 or the auxiliary fixing base 3 to be provided with a positioning bolt hole 8, and a fastening bolt is arranged in a manner of being matched with the positioning bolt hole 8; activity stopper 7 is gone up the parallel arrangement and is provided with two bar holes 9, 3 top surfaces of vice fixed baseplate correspond two bar holes 9 are provided with positioning bolt hole 8, and the cooperation corresponds bar hole 9 and positioning bolt hole 8 and is provided with fastening bolt. The fixing mode in the sample manufacturing process is not limited to the tightening and fixing of the pressing block bolt, and other pressing and fixing structures such as a vertical fixing pressing device can be included.
The side of 2 sides of main fixed baseplate is provided with side fixing device, 2 upper surface inner ends of main fixed baseplate are provided with location identification means, 2 upper surface outer ends of main fixed baseplate are provided with go up fixed briquetting 6, 2 upper surfaces of main fixed baseplate are located location identification means with it is provided with to go up the side reason between the fixed briquetting 6 locating pin 5.
The outer end of the upper surface of the auxiliary fixed base 3 is provided with the movable limiting block 7, the upper surface of the auxiliary fixed base 3 is positioned at the inner end of the movable limiting block 7 and is provided with the upper fixed pressing block 6, and the upper surface of the auxiliary fixed base 3 is positioned at the side edge of the inner end of the upper fixed pressing block 6 and is provided with the positioning pin 5.
The side fixing device comprises a side pressing block 10, the side pressing block 10 is matched with the corresponding position of the side face of the main fixing base 2 to be provided with a positioning bolt hole 8, and the positioning bolt hole 8 is provided with a fastening bolt in a matched mode.
The positioning and marking device comprises a plurality of equidistant parallel scale marks 4, and the scale marks 4 transversely penetrate through the upper surface of the main fixed base 2. The parallel scale marks 4 are marked by scales at intervals of 5mm, so that subsequent single substrate pieces can be aligned conveniently, the single substrate pieces can be guaranteed to extend out of the edge of the main base, and an excessive glue scraping space is reserved.
The distance between the main fixed base 2 and the auxiliary fixed base 3 is 30mm, so that excessive glue scraping and clamping operation space is guaranteed.
Set up 4 locating pins 5 on the main unable adjustment base 2, set up 2 locating pins 5 on the vice unable adjustment base 3 to satisfy sample preparation lateral positioning requirement.
The positioning pins 5 are arranged in pairs on the main fixing base 2 or the auxiliary fixing base 3, and the positioning pins 5 are all arranged along a straight line.
The method comprises the following steps of:
firstly, preparing a plurality of base material single sheets of tensile shear strength samples meeting the size requirement;
secondly, scribing one end of the first substrate single sheet 11 according to the length requirement of the bonding surface of the standard sample, and marking a bonding area;
thirdly, loosening fastening bolts to remove the upper fixing pressing block 6 of the main fixing base 2, placing the first substrate single sheet 11 between the upper fixing pressing block 6 and the main fixing base 2, aligning the scribing line of the first substrate single sheet 11 with the corresponding positioning and marking device of the main fixing base 2, enabling the side edge of the first substrate single sheet to abut against the positioning pin 5, and tightening the fastening bolts to enable the upper fixing pressing block 6 to tightly press the first substrate single sheet 11;
fourthly, loosening fastening bolts, detaching an upper fixing pressing block 6 of the auxiliary fixing base 3, firstly placing a second base material single sheet 12 with the same thickness as the base material single sheet on the main fixing base 2 to adjust the height, compensating the overlapping thickness difference, and pre-positioning a third base material single sheet 13 by moving the movable limiting block 7;
fifthly, adding structural adhesive into the bonding area of the first substrate single sheet 11, carrying out homogenization treatment, and adding a certain amount of glass beads into the structural adhesive in the bonding area;
sixthly, stacking a third base material single sheet 13 on the second base material single sheet 12, enabling the side edge of the third base material single sheet to abut against the positioning pin 5 of the auxiliary fixing base 3, enabling the end part of the third base material single sheet to abut against the movable limiting block 7, enabling the inner end of the third base material single sheet 13 to be aligned with the scribing position of the first base material single sheet 11, pressing downwards, screwing a fastening bolt to fix the upper fixing pressing block 6, and further fixing the position of the third base material single sheet 13;
seventhly, homogenizing and pressing a structural adhesive bonding area formed by overlapping the first substrate single sheet 11 and the third substrate single sheet 13, bonding the first substrate single sheet 11 and the third substrate single sheet 13 into a tensile shear strength sample, and performing adhesive overflow treatment on the tensile shear strength sample;
step eight, clamping a bonding area of the tensile shear strength sample by using a clamp, and ensuring that continuous structural adhesive overflows from the periphery of the bonding area; the main fixed base 2 and the auxiliary fixed base 3 have enough space for clamping operation.
And step nine, loosening the fastening bolt, detaching the upper fixed pressing block 6, and taking out the tensile shear strength sample.
T-shaped stripping sample preparation comprises the following steps:
firstly, preparing an L-shaped base material single sheet required by a T-shaped stripping sample;
secondly, placing the first L-shaped substrate single sheet 14 between the side pressing block 10 and the main fixing base 2 for fixing, enabling the bonding area of the first L-shaped substrate single sheet 14 to face upwards, adding structural adhesive in the bonding area, carrying out homogenization treatment, and adding a certain amount of glass beads in the structural adhesive;
thirdly, loosening the side pressing block 10 to take out the first L-shaped single substrate 14, placing the first L-shaped single substrate 14 on the upper surface of the main fixing base 2, enabling the side edge to abut against the positioning pin 5, and fixing by using the upper fixing pressing block 6;
fourthly, selecting a second L-shaped single substrate sheet 15, placing the second L-shaped single substrate sheet on the upper surface of the main fixing base 2, enabling the side edge of the second L-shaped single substrate sheet to abut against the positioning pin 5, pushing the second L-shaped single substrate sheet 14 until the bonding area of the first L-shaped single substrate sheet and the bonding area of the second L-shaped single substrate sheet are attached to form a T-shaped peeling sample, carrying out homogenization compression on the bonding area of the T-shaped peeling sample, and scraping the excessive glue;
and fifthly, clamping the bonding area of the T-shaped stripping sample by using a clamp, ensuring that structural adhesive continuously overflows from the periphery of the bonding area, unscrewing a pressing block bolt, removing a pressing block, and taking out the T-shaped stripping sample.
The fixing mode in the sample manufacturing process is not limited to the tightening and fixing of the pressing block bolt, and other pressing and fixing structures such as a vertical fixing pressing device can be included.
In the case of producing a tensile shear strength sample, first, a dimension scribe is performed on a processed base material piece in accordance with a structural adhesive overlapping region in a sample specification defined by a standard or a study. For example, the overlapped area of the sample is 12.5mm, and the interval between the single ends of the base material is 12.5mm, and the mark is drawn according to the measurement of the tensile shear strength of the adhesive (rigid material to rigid material) according to the national standard GB/T7124-2008, so as to mark the gluing area range of the structural adhesive. And then placing the scribed substrate single sheet on the main fixed base 2, aligning the scribing mark of the test piece with the scribing of the main fixed base 2, limiting the position by using a positioning pin 5 in the lateral direction, constraining the six-direction freedom degrees of the first substrate single sheet 11, and screwing and fixing by using a bolt through a pressing block on the main fixed base 2.
After the substrate single sheet is completely limited and fixed, the structural adhesive bonding area is uniformly compressed in a manual mode, and the scraping treatment is carried out on the adhesive overflowing around the structural adhesive bonding area by using a scraper. And after the excessive glue is scraped, the long tail clamp is used for respectively extending into the space between the main base and the auxiliary base at two sides of the sample to clamp the sample. The clamping force of the binder clip is larger than the first manual uniform pressing force, and the structural adhesive can continuously seep out under normal conditions. The periphery of the structural adhesive bonding area is ensured to have slight adhesive overflow, and the adhesive overflow at the periphery is continuous without treatment. And after the sample is clamped, unscrewing a pressing block bolt, removing a pressing block, taking out the prepared sample, uniformly placing the sample, and treating the sample for subsequent baking and hardening treatment.
After the T-shaped peeling sample is fixed, homogenization compaction is carried out in a manual mode. And scraping the overflowing glue around the structural glue bonding area by using a scraper. After the peripheral excessive glue is scraped, a clamp with a proper shape and size, such as a long-tail clamp, is used for clamping the sample at two sides respectively. The periphery of the structural adhesive bonding area is ensured to have slight adhesive overflow, and the adhesive overflow at the periphery is continuous without treatment. And unscrewing the upper pressing block bolt, removing the pressing block, taking out the prepared sample, uniformly placing the sample, and waiting for subsequent baking and hardening treatment.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a structural adhesive bonding test sample preparation frock which characterized in that: the utility model discloses a lamp holder, including the base plate, the base plate both ends are provided with the main fixed baseplate and vice fixed baseplate of uniform height respectively, main fixed baseplate or vice fixed baseplate side are provided with side fixing device, main fixed baseplate with vice fixed baseplate upper surface is provided with fixing device respectively, main fixed baseplate or vice fixed baseplate upper surface inner is provided with location identification means, main fixed baseplate with vice fixed baseplate upper surface side reason is arranged respectively and is provided with a plurality of locating pins.
2. The structural adhesive bonding test sample preparation tool of claim 1, characterized in that: the upper fixing device comprises an upper fixing pressing block and a movable limiting block, the corresponding positions of the upper fixing pressing block and the top surface of the main fixing base or the auxiliary fixing base are mutually matched with each other to form positioning bolt holes, and fastening bolts are arranged in a manner of being matched with the positioning bolt holes; two strip-shaped holes are arranged in parallel on the movable limiting block, the top surface of the auxiliary fixing base corresponds to two of the strip-shaped holes, and the strip-shaped holes are provided with positioning bolt holes, and fastening bolts are arranged on the strip-shaped holes and the positioning bolt holes in a matching mode.
3. The structural adhesive bonding test sample preparation tool of claim 2, characterized in that: the side fixing device is arranged on the side face of the main fixing base, the positioning identification device is arranged at the inner end of the upper surface of the main fixing base, the upper fixing pressing block is arranged at the outer end of the upper surface of the main fixing base, and the positioning identification device and the positioning pin are arranged on the side edge between the upper fixing pressing block and the main fixing base.
4. The structural adhesive bonding test sample preparation tool of claim 2, characterized in that: the outer end of the upper surface of the auxiliary fixed base is provided with the movable limiting block, the upper surface of the auxiliary fixed base is located at the inner end of the movable limiting block and is provided with the upper fixed pressing block, and the upper surface of the auxiliary fixed base is located at the edge of the inner end of the upper fixed pressing block and is provided with the positioning pin.
5. The structural adhesive bonding test sample preparation tool of claim 1, characterized in that: the side fixing device comprises a side pressing block, the side pressing block is matched with the corresponding position of the side face of the main fixing base to be provided with a positioning bolt hole, and the positioning bolt hole is provided with a fastening bolt in a matched mode.
6. The structural adhesive bonding test sample preparation tool of claim 1, characterized in that: the positioning and marking device comprises a plurality of equidistant parallel scale marks, and the scale marks transversely penetrate through the upper surface of the main fixed base.
7. The structural adhesive bonding test sample preparation tool of claim 1, characterized in that: the positioning pins are arranged in pairs on the main fixing base or the auxiliary fixing base, and the positioning pins are all arranged along a straight line.
8. The sample preparation method of the structural adhesive bonding test sample preparation tool is characterized by comprising the following steps of:
firstly, preparing a plurality of base material single sheets of tensile shear strength samples meeting the size requirement;
secondly, marking one end of the first substrate single sheet according to the length requirement of the bonding surface of the standard sample, and marking a bonding area;
thirdly, loosening the fastening bolt to remove the upper fixing pressing block of the main fixing base, placing the first substrate single sheet between the upper fixing pressing block and the main fixing base, aligning the first substrate single sheet scribing line with the corresponding positioning identification device of the main fixing base, enabling the side edge of the first substrate single sheet to abut against the positioning pin, and screwing the fastening bolt to enable the upper fixing pressing block to tightly press the first substrate single sheet;
loosening fastening bolts, dismounting an upper fixing press block of the auxiliary fixing base, firstly placing a second substrate single piece with the same thickness as the substrate single piece on the main fixing base to adjust the height, compensating the lapping thickness difference, and pre-positioning a third substrate single piece by moving the movable limiting block;
fifthly, adding structural adhesive into the bonding area of the first substrate single sheet, carrying out homogenization treatment, and adding a certain amount of glass beads into the structural adhesive in the bonding area;
sixthly, stacking a third substrate single sheet on the second substrate single sheet, wherein the side edge of the third substrate single sheet abuts against a positioning pin of the auxiliary fixing base, the end part of the third substrate single sheet abuts against a movable limiting block to enable the inner end of the third substrate single sheet to align with the scribing position of the first substrate single sheet, pressing downwards, screwing a fastening bolt to fix an upper fixing pressing block, and further fixing the position of the third substrate single sheet;
seventhly, uniformly compressing a structural adhesive bonding area formed by overlapping the first substrate single chip and the third substrate single chip to bond the first substrate single chip and the third substrate single chip into a tensile shear strength sample, and performing adhesive overflow treatment on the tensile shear strength sample;
step eight, clamping a bonding area of the tensile shear strength sample by using a clamp, and ensuring that continuous structural adhesive overflows from the periphery of the bonding area;
and ninthly, loosening the fastening bolt, detaching the upper fixed pressing block, and taking out the tensile shear strength sample.
9. The sample preparation method of the structural adhesive bonding test sample preparation tool is characterized by comprising the following steps of:
firstly, preparing an L-shaped base material single sheet required by a T-shaped stripping sample;
secondly, placing the first L-shaped substrate single sheet between the side pressing block and the main fixed base, enabling the bonding area of the first L-shaped substrate single sheet to be upward, adding structural adhesive into the bonding area, carrying out homogenization treatment, and adding a certain amount of glass beads into the structural adhesive;
thirdly, loosening the side pressing block to take out a first L-shaped base material single sheet, placing the first L-shaped base material single sheet on the upper surface of the main fixing base, enabling the side edge to abut against the positioning pin, and fixing the first L-shaped base material single sheet by using the upper fixing pressing block;
fourthly, selecting a second L-shaped substrate single sheet, placing the second L-shaped substrate single sheet on the upper surface of the main fixing base, enabling the side edge of the second L-shaped substrate single sheet to abut against the positioning pin, pushing the second L-shaped substrate single sheet to the first L-shaped substrate single sheet until the bonding areas of the first L-shaped substrate single sheet and the second L-shaped substrate single sheet are bonded to form a T-shaped stripping sample, carrying out uniform compression on the bonding area of the T-shaped stripping sample, and scraping overflowing glue;
and fifthly, clamping the bonding area of the T-shaped stripping sample by using a clamp, ensuring that structural adhesive continuously overflows from the periphery of the bonding area, unscrewing a pressing block bolt, removing a pressing block, and taking out the T-shaped stripping sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156534.XA CN115901611A (en) | 2021-09-30 | 2021-09-30 | Preparation tool and sample preparation method for structural adhesive bonding test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156534.XA CN115901611A (en) | 2021-09-30 | 2021-09-30 | Preparation tool and sample preparation method for structural adhesive bonding test sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115901611A true CN115901611A (en) | 2023-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111156534.XA Pending CN115901611A (en) | 2021-09-30 | 2021-09-30 | Preparation tool and sample preparation method for structural adhesive bonding test sample |
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| Country | Link |
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| CN (1) | CN115901611A (en) |
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2021
- 2021-09-30 CN CN202111156534.XA patent/CN115901611A/en active Pending
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