CN109142687A - A kind of mold and its method measuring sealant linear shrinkage - Google Patents
A kind of mold and its method measuring sealant linear shrinkage Download PDFInfo
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- CN109142687A CN109142687A CN201810922677.9A CN201810922677A CN109142687A CN 109142687 A CN109142687 A CN 109142687A CN 201810922677 A CN201810922677 A CN 201810922677A CN 109142687 A CN109142687 A CN 109142687A
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- sealant
- groove
- mold
- linear shrinkage
- measuring
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- 239000000565 sealant Substances 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003292 glue Substances 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 229920006351 engineering plastic Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004590 silicone sealant Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to sealant application fields, and in particular to a kind of mold and its method for measuring sealant linear shrinkage.The present invention provides a kind of molds for measuring sealant linear shrinkage, including a bottom plate and four side plates；Side plate is oppositely arranged in pairs, and side plate surrounds to form injecting glue slot；Floor level is set to the bottom end of side plate；The surface of bottom plate is equipped with the first groove and the second groove；First groove and the second groove are spaced setting in the horizontal direction.The present invention also provides a kind of methods for measuring sealant linear shrinkage, sealant are injected in above-mentioned mold, adhesive curing to be sealed, measure the spacing of two boss in sealant and obtain linear shrinkage by preset formula.A kind of mold and its method measuring sealant linear shrinkage provided by the invention, existing sealant is solved due to can not Accurate Determining linear shrinkage, so that sealant can not accurately be sorted out before application, and then the technical issues of cause the Cohesion reliability of sealant to decline.
Description
Technical field
The invention belongs to sealant application fields, and in particular to it is a kind of measure sealant linear shrinkage mold and its side
Method.
Background technique
Existing sealant, due to crosslinking reaction, causes the volume ratio after solidifying to solidify during cured
It reduces before, sealant is mostly used in the adhering and sealing of strip position, the bonding reliability of the size of shrinking percentage to sealant
It has a certain impact.Therefore, existing sealant can not accurately measure the low sealant of linear shrinkage, especially shrinking percentage, make
Obtaining sealant can not accurately sort out before application, and then the Cohesion reliability reduction of sealant is caused to become those skilled in the art
Member's technical problem urgently to be resolved.
Summary of the invention
In view of this, the present invention provides a kind of mold and its method for measuring sealant linear shrinkage, it is effective to solve
Determined existing sealant due to can not Accurate Determining linear shrinkage so that sealant can not accurately be sorted out before application, in turn
The technical issues of causing the Cohesion reliability of sealant to decline.
The present invention provides a kind of molds for measuring sealant linear shrinkage, including a bottom plate and four side plates；
The side plate is oppositely arranged in pairs, and the side plate surrounds to form injecting glue slot；
The floor level is set to the bottom end of the side plate；
The surface of the bottom plate is equipped with the first groove and the second groove；
First groove and second groove are spaced setting in the horizontal direction.
Preferably, first groove and second groove, which are penetrated through with the bottom plate, connects.
Wherein, sealant is generally divided into trickling type sealant and non-trickling type sealant, when sealant is the sealing of trickling type
When glue, the first groove and the second groove and bottom plate are non-through connection, and trickling type sealant can be prevented since mobility is higher, and
Cause measurement result inaccurate.
When sealant is non-trickling type sealant, the first groove and the second groove design are penetrated through into connection at bottom plate
Mode contacts sealant with air, to improve the curing rate of sealant.It can thus be seen that mould provided by the invention
Tool had both been applicable to trickling type sealant and has been equally applicable to non-trickling type sealant.
Preferably, the spacing of first groove and second groove is 100-200mm.
It is furthermore preferred that the spacing of first groove and second groove is 200mm.
Preferably, the depth of the injecting glue slot is 3.5-4mm.
It is furthermore preferred that the depth of the injecting glue slot is 4mm.
Preferably, first groove is identical as the depth of second groove.When the first groove and the second depth of groove
When identical, the shrinkage of sealant short transverse is consistent, small on the size influence of the horizontal aspect of entire glue, can be improved accurate
Degree.
Preferably, the depth of first groove and second groove is 1.8-2mm.
It is furthermore preferred that the depth of first groove and second groove is 2mm.
The present invention also provides a kind of methods for measuring sealant linear shrinkage, comprising the following steps:
Step 1: the spacing d1 of measurement the first groove and the second groove in advance；
Step 2: sealant being first injected into first groove and second groove in mold, then will be described close
Sealing is injected into the injecting glue slot in mold；
Step 3: the sealant for overflowing the injecting glue slot is scraped；
Step 4: to the sealing glue solidifying, the sealant being taken out from the mold；
Step 5: to the sealing glue solidifying, measuring the spacing d2 of two boss in the sealant, pass through preset formula
Obtain linear shrinkage.
Preferably, the preset formula is linear shrinkage=(1-d2/d1) * 100%.
It should be noted that the state of sealant is generally thick liquid or lotion, directly injected from one end of mold
When to the other end, the position of groove may be inaccurate because of positioning there are gap, measures there are error, the above method passes through elder generation
The first groove and the second groove sealant being first injected into mold, are re-introduced into injecting glue slot, can avoid groove location glue
The discontented phenomenon of body filling occurs, and the accuracy of positioning is improved, to improve the accuracy and reliability of test.
It should be noted that metal material or engineering plastics preparation can be used in mold, and after step 1, before step 2
Release agent or mould release are coated in mould inner surface.
It is furthermore preferred that above-mentioned engineering plastics are selected from polyethylene, polypropylene, polyvinyl chloride or polytetrafluoroethylene (PTFE).
Further preferably, above-mentioned engineering plastics are selected from polyethylene, polypropylene or polytetrafluoroethylene (PTFE), above-mentioned three kinds of frostings
Can be lower, it is more suitable for the excellent sealant of cementability.
Still further preferably, above-mentioned engineering plastics are polytetrafluoroethylene (PTFE)；
Preferably, after the step 3, further include before the step 4, by the die flip and to described first
Groove and the second groove glue simultaneously strike off.After step 3, can check before step 4 glue of groove location either with or without
Groove is filled up, if there is gap, then to first groove and the second groove glue and can be struck off.
Preferably, the step 2 specifically includes first groove being first injected into sealant in mold and described
In two grooves, it is laid with release film in first groove and second bottom portion of groove, then the sealant is injected into mold
In injecting glue slot in.By being laid with release film, it can prevent sealant from staiing operating table surface.
A kind of mold and its method measuring sealant linear shrinkage provided by the invention, passes through the injecting glue slot in mold
The first groove and the second groove is arranged in lower surface, so that the mold of existing measurement shrinking percentage be avoided only to pass through a box, leads
Fine and close sealing, since dimensional measurement is inaccurate, leads to the problem of result inaccuracy when top does not fill full.It is provided by the invention
During sealant is injected mold by test method, the first groove and the second groove are first injected, further injects injecting glue slot
In, it can avoid the technical problem that sealant causes measurement result inaccurate due to mobility.In addition, test method provided by the invention
By the spacing d1 of the first groove in preparatory Measurement die and the second groove, after adhesive curing to be sealed, two are measured in sealant
The spacing d2 of boss, then linear shrinkage is calculated by preset equation technique.Go out accurate shrinking percentage by measured in advance, can incite somebody to action
Different types of sealant and the correct classification of its application, improve the reliability of sealant application.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the front view of the mold for the measurement sealant linear shrinkage that the embodiment of the present invention 1 provides；
Fig. 2 is the side view of the mold for the measurement sealant linear shrinkage that the embodiment of the present invention 1 provides；
Fig. 3 is the top view of the mold for the measurement sealant linear shrinkage that the embodiment of the present invention 1 provides；
Fig. 4 is the front view of the mold for the measurement sealant linear shrinkage that the embodiment of the present invention 2 provides；
Fig. 5 is the side view of the mold for the measurement sealant linear shrinkage that the embodiment of the present invention 2 provides；
Fig. 6 is the top view of the mold for the measurement sealant linear shrinkage that the embodiment of the present invention 2 provides；
Fig. 7 is the structural schematic diagram of the mold for the measurement sealant linear shrinkage that comparative example 1 of the present invention provides；
Wherein, appended drawing reference is as follows:
1, bottom plate；2a, the first groove；2b, the second groove；3, injecting glue slot；4, side plate；5, groove.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to guarantor of the present invention
The range of shield.
The embodiment of the invention provides a kind of mold and its method for measuring sealant linear shrinkage, effective solutions
In the prior art sealant can not Accurate Determining shrinking percentage, cause sealant Cohesion reliability decline the technical issues of.
Embodiment 1
Fig. 1, Fig. 2 and Fig. 3 are please referred to, a kind of mold for measuring sealant linear shrinkage is present embodiments provided, including
One bottom plate 1 and four side plates 4；
Side plate 4 is oppositely arranged in pairs, and side plate surrounds to form injecting glue slot 3；
Bottom plate 1 is horizontally placed on the bottom end of side plate 4；
The surface of bottom plate 1 is equipped with the first groove 2a and the second groove 2b；
First groove 2a and the second groove 2b are spaced setting in the horizontal direction.
By Fig. 1 and Fig. 2 it is found that the first groove 2a and the second groove 2b and bottom plate 1 are non-through connection, trickling type can be prevented
Sealant causes measurement result inaccurate since mobility is higher, this is linear for a kind of measurement sealant provided by the invention
One embodiment of the mold of shrinking percentage, above-mentioned mold are suitable for trickling type sealant.
Further, the spacing of the first groove 2a and the second groove 2b are 200mm.
Further, the depth of injecting glue slot is 4mm.
Further, the depth of the first groove 2a and the second groove 2b are 2mm.
A kind of method for measuring sealant linear shrinkage provided by the embodiment of the present invention 1 is further illustrated below.
Measurement method: sealant is first injected first by measurement the distance between the first groove 2a and the second groove 2b in advance
In groove 2a and the second groove 2b, bubble is then reinjected in entire mold and be discharged, the sizing material thin edged knife of mold will be higher by
Piece scrapes.It is cured to when can be with break away from moulds, glue is removed from the molds, smooth one sets downwards under the conditions of standard cure
In on PE film, being then further continued for being cured to the state of complete cure, then measuring two boss, (two on corresponding mold are recessed
Slot) the distance between d2.Linear shrinkage is calculated according to linear shrinkage=(1-d2/d1) * 100%.Wherein, in the present embodiment
Sealant be trickling type sealant, that is, silicone sealant, and the present embodiment by silicone sealant by the above method measure three
It is secondary.
Embodiment 2
Fig. 4, Fig. 5 and Fig. 6 are please referred to, a kind of mold for measuring sealant linear shrinkage is present embodiments provided, including
One bottom plate and four side plates；
Side plate 4 is oppositely arranged in pairs, and side plate 4 surrounds to form injecting glue slot 3；
Bottom plate 1 is horizontally placed on the bottom end of side plate 4；
The surface of bottom plate is equipped with the first groove 2a and the second groove 2b；
First groove 2a and the second groove 2b are spaced setting in the horizontal direction.
Further, the first groove 2a and the second groove 2b is penetrated through with bottom plate 1 and is connected.
When sealant is non-trickling type sealant, the first groove 2a and the second groove 2b are designed to penetrate through with bottom plate 1
The mode of connection contacts sealant with air, to improve the curing rate of sealant.It can thus be seen that the present invention is real
The mold for applying example offer is suitable for non-trickling type sealant.
Further, the spacing of the first groove 2a and the second groove 2b are 200mm.
Further, the depth of injecting glue slot is 4mm.
Further, the depth of the first groove 2a and the second groove 2b are 2mm.
A kind of method for measuring sealant linear shrinkage provided by the embodiment of the present invention 2 is further illustrated below.
Measurement method: the distance between the first groove 2a and the second groove 2b d1 are designed as 200mm；Measure the first groove
The distance between 2a and the second groove 2b, mold is placed on clear PE film, first sealant is first injected the first groove 2a and
In second groove 2b, sealant is injected into other end discharge bubble from one end, the sizing material for being higher by mold is scraped with sharp blade
Out, by die flip, the position of two grooves is observed either with or without scarce material, if there is scarce material, removes PE film, glue simultaneously strikes off.
It is cured under the conditions of standard cure when can be with break away from moulds, glue will be sealed and be removed from the molds, smooth one sets downwards
In on PE film, being then further continued for being cured to the state of complete cure, the distance between two boss d2 is then measured.This implementation
Sealant in example is that non-trickling type sealant builds silicone sealant, and the present embodiment will build silicone sealant by upper
State method measurement three times.
In conclusion test result is as follows for above-described embodiment 1 and embodiment 2
Table 1 is the data in embodiment 1 after the test of trickling type sealant 3 times, as shown in table 1:
1 trickling type sealant of table tests 3 data results
| Project | L1(mm) | L2(mm) | Shrinking percentage (%) |
| For the first time | 200.1 | 198.57 | 0.76 |
| Second | 200.1 | 198.62 | 0.74 |
| For the third time | 200.1 | 198.56 | 0.77 |
| Standard parameter | <0.8 | ||
| Average value | 200.1 | 198.58 | 0.76 |
Table 2 is the data in embodiment 2 after non-the test of trickling type sealant 3 times, as shown in table 2:
The non-trickling type sealant of table 2 tests 3 data results
| Project | L1(mm) | L2(mm) | Shrinking percentage (%) |
| For the first time | 199.9 | 195.38 | 2.26 |
| Second | 199.9 | 195.34 | 2.28 |
| For the third time | 199.9 | 195.46 | 2.22 |
| Standard parameter | <2.5 | ||
| Average value | 199.9 | 586.18 | 2.25 |
It can thus be seen that either trickling type sealant or non-trickling type sealant, implement by using the present invention
The mold and method for the measurement sealant linear shrinkage that example provides be measured after shrinking percentage and standard parameter (sealant
Shrinking percentage) it is of substantially equal, error rate is smaller, illustrates mold provided in an embodiment of the present invention and method in the contraction of measurement sealant
Accuracy with higher when rate.
Embodiment 3
MS sealant is measured using the mold of measurement sealant linear shrinkage and method in embodiment 2, wherein
It is taken out after 168 hours, 216 hours and 360 hours respectively after MS sealant is injected in the mold of embodiment 2, and measures it
Shrinking percentage
Comparative example 1
As shown in fig. 7, Fig. 7 is the structural schematic diagram for the mold that the comparative example 1 provides, non-trickling type sealant, that is, MS is close
Sealing is poured into the groove 5 of the mold, and is taken out after 168 hours, 216 hours and 360 hours respectively and measured its contraction
Rate.
In conclusion above-described embodiment 3 is with comparative example 1, test result is as follows:
Table 3: the test result of embodiment 3 and comparative example 1
| Time | Embodiment 3 | Comparative example 1 |
| 168 hours | 1.74% | It can not measure |
| 216 hours | 1.97% | 1.69% |
| 360 hours | 1.99% | 1.96% |
| Standard parameter | < 2% | < 2% |
It can thus be seen that comparative example 1 is sealed since bottom uses for non-trickling type sealant, lead to its solidification
Speed is slow, so that sealant was not fully cured and sticks in mold bottom, seriously affects sealant in taking-up in 168 hours
Measure the efficiency and accuracy of shrinking percentage.And the mold in the embodiment of the present invention 3 is breathed freely due to two-way, and non-trickling can be improved
The curing rate of type sealant, and ensure test accuracy, test period can be shortened, improve working efficiency, improve mold benefit
With rate.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of mold for measuring sealant linear shrinkage, which is characterized in that including a bottom plate and four side plates；
The side plate is oppositely arranged in pairs, and the side plate surrounds to form injecting glue slot；
The floor level is set to the bottom end of the side plate；
The surface of the bottom plate is equipped with the first groove and the second groove；
First groove and second groove are spaced setting in the horizontal direction.
2. a kind of mold for measuring sealant linear shrinkage according to claim 1, which is characterized in that described first is recessed
Slot and second groove, which are penetrated through with the bottom plate, to be connected.
3. a kind of mold for measuring sealant linear shrinkage according to claim 1, which is characterized in that described first is recessed
The spacing of slot and second groove is 100-200mm.
4. a kind of mold for measuring sealant linear shrinkage according to claim 1, which is characterized in that the injecting glue slot
Depth be 3.5-4mm.
5. a kind of mold for measuring sealant linear shrinkage according to claim 1, which is characterized in that described first is recessed
Slot is identical as the depth of second groove.
6. a kind of mold for measuring sealant linear shrinkage according to claim 5, which is characterized in that described first is recessed
The depth of slot and second groove is 1.8-2mm.
7. a kind of method for measuring sealant linear shrinkage, which comprises the following steps:
Step 1: the spacing d1 of measurement the first groove and the second groove in advance；
Step 2: sealant being first injected into first groove and second groove in mold, then by the sealant
It is injected into the injecting glue slot in mold；
Step 3: the sealant for overflowing the injecting glue slot is scraped；
Step 4: to the sealing glue solidifying, the sealant being taken out from the mold；
Step 5: to the sealing glue solidifying, measuring the spacing d2 of two boss in the sealant, obtained by preset formula
Linear shrinkage.
8. a kind of method for measuring sealant linear shrinkage according to claim 7, which is characterized in that the preset public affairs
Formula is linear shrinkage=(1-d2/d1) * 100%.
9. a kind of method for measuring sealant linear shrinkage according to claim 7, which is characterized in that in the step
Further include after 3, before the step 4, by the die flip and to first groove and the second groove glue simultaneously
It strikes off.
10. a kind of method for measuring sealant linear shrinkage according to claim 7, which is characterized in that the step 2
Specifically include in first groove and second groove being first injected into sealant in mold, in first groove and
Second bottom portion of groove is laid with release film, then the sealant is injected into the injecting glue slot in mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922677.9A CN109142687A (en) | 2018-08-14 | 2018-08-14 | A kind of mold and its method measuring sealant linear shrinkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922677.9A CN109142687A (en) | 2018-08-14 | 2018-08-14 | A kind of mold and its method measuring sealant linear shrinkage |
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| CN109142687A true CN109142687A (en) | 2019-01-04 |
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| CN201810922677.9A Pending CN109142687A (en) | 2018-08-14 | 2018-08-14 | A kind of mold and its method measuring sealant linear shrinkage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672823A (en) * | 2019-10-24 | 2020-01-10 | 江苏赛诺格兰医疗科技有限公司 | Method and tool for testing shrinkage rate of silica gel |
| CN113777287A (en) * | 2021-08-30 | 2021-12-10 | 歌尔光学科技有限公司 | Method for testing curing shrinkage of glue |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110672823A (en) * | 2019-10-24 | 2020-01-10 | 江苏赛诺格兰医疗科技有限公司 | Method and tool for testing shrinkage rate of silica gel |
| CN113777287A (en) * | 2021-08-30 | 2021-12-10 | 歌尔光学科技有限公司 | Method for testing curing shrinkage of glue |
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Application publication date: 20190104 |
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