CN116285817B - Double-component epoxy glue mixing method - Google Patents
Double-component epoxy glue mixing method Download PDFInfo
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- CN116285817B CN116285817B CN202310317070.9A CN202310317070A CN116285817B CN 116285817 B CN116285817 B CN 116285817B CN 202310317070 A CN202310317070 A CN 202310317070A CN 116285817 B CN116285817 B CN 116285817B
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- mixing
- glue
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- tube
- rpm
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- 238000002156 mixing Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229920006335 epoxy glue Polymers 0.000 title claims abstract description 16
- 239000003292 glue Substances 0.000 claims abstract description 72
- 238000010074 rubber mixing Methods 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000013019 agitation Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 25
- 230000000694 effects Effects 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 230000003068 static effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/50—Movable or transportable mixing devices or plants
- B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
- B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/36—Mixing of ingredients for adhesives or glues; Mixing adhesives and gas
Abstract
The application discloses a bi-component epoxy glue mixing method, and belongs to the field of bi-component vacuum glue filling. The technical key points are as follows: the viscosity of the A glue is 10 6 ～1.3×10 6 cps (25 ℃), the viscosity of the B gel was 3X 10 4 cps (25 ℃); mixing the glue A and the glue B into a first glue mixing pipe together, stirring and mixing, and after mixing is completed; and then the mixture is conveyed into a second rubber mixing pipe to be continuously stirred and mixed. By adopting the technical scheme of the application, the problem of uneven glue mixing when the viscosity is relatively poor and overlarge is solved.
Description
Technical Field
The application relates to the field of double-component vacuum glue filling, in particular to a double-component epoxy glue mixing method.
Background
The vacuum glue-pouring equipment generally comprises: the glue storage barrel, the heating unit, the mixing unit, the vacuum cavity, the travelling mechanism and other structural units are equipment for pouring glue in a vacuum environment.
For epoxy glue filling, the main problems are as follows: A. the problem of foaming glue; B. glue mixing problems; C. and the glue filling uniformity is improved.
When the two-component epoxy glue described in the table 1 is mixed, for the vacuum glue filling equipment, for example, CN206604681U, CN218574109U has the problem of serious non-uniformity of glue mixing: A. the potting adhesive of the component B has overlarge adhesive difference, the glue filling machine cannot adapt, the glue mixing is uneven, and water waves visible to naked eyes exist as shown in figure 1.
For the glue mixing process, the prior art has not encountered the problems of table 1; thus, no experience has been relevant.
TABLE 1
Disclosure of Invention
The application aims to provide a double-component epoxy glue vacuum pouring method aiming at the defects of the prior art.
A bi-component epoxy glue mixing method is used forMixing the adhesive A and the adhesive B; the viscosity of the A glue is 10 6 ～1.3×10 6 cps (25 ℃), the viscosity of the B gel was 3X 10 4 cps(25℃)；
The method comprises the following steps:
mixing the adhesive A and the adhesive B into a first rubber mixing pipe together, and after the mixing is finished; and then the mixture is conveyed into a second rubber mixing pipe for continuous mixing.
Further, the total length of the first rubber mixing pipe is Lmm, the inner pipe diameter is Dmm, and the stirring speed is r revolutions per minute; l, D, r satisfies the following formula:
S threshold value Take a value of 0.55.
Further, the length of the inner core of the first rubber mixing pipe is L Inner core mm, the inner pipe diameter is Dmm, and the stirring speed is r revolutions per minute; l (L) Inner core D, r satisfy the following formula:
S threshold value Take a value of 0.55.
Further, the first mixing tube has a D of [10,20] mm, r of [500,4000] rpm and L of [128,216] mm.
Further, D of the first rubber mixing tube is in the range of [10,20]mm, r is [500,4000]]Revolutions per minute, L Inner core In [94,183 ]]mm。
Further, the rotation speed of the second rubber mixing pipe is not lower than 1500 rpm.
Further, the inner pipe diameter of the second rubber mixing pipe is not less than 16mm, and the total length of the pipe is not less than 200mm.
Further, the stirring directions in the first rubber mixing pipe and the second rubber mixing pipe are opposite.
Further, the glue A is heated to 30-45 ℃ before being mixed, and then the subsequent mixing is carried out (the equipment has a temperature maintaining function, and the temperature during the mixing is also within the temperature).
The application has the beneficial effects that:
(1) The first application provides a process judgment condition of a first rubber mixing pipe:
or:
(2) The second application provides a design concept of 'first single-tube mixing and second single-tube mixing', and on the basis that the first mixing tube meets the 1 st process condition, the design concept is that: it is desirable that the rotational speed of the second mixing tube is not less than 1500 rpm (typically 1500 rpm-2000 rpm).
(3) After the glue is mixed by adopting the method provided by the application, after the ageing test is carried out, no crack exists in the pouring sealant, and the normal hardness is 80+/-5.
Drawings
The application is described in further detail below in connection with the embodiments in the drawings, but is not to be construed as limiting the application in any way.
Fig. 1 is a schematic diagram of a typical problem of poor mixing effect (prior art solution).
Fig. 2 is a mix test set one: and (3) a single-tube static mixing glue mixing effect.
Fig. 3 is a mix test group two: the single-tube dynamic mixing glue mixing effect (the effect of 5+3500 revolutions per minute of glue mixing tube).
Fig. 4 is a mix test set three: the single-tube dynamic and single-tube static mixing glue mixing effect (dynamic tube: glue mixing tube effect of 5+3500 rpm; static tube: 216mm long).
Fig. 5 is a mix test set four: single tube dynamic mixing+single tube dynamic mixing (with "mixing tube 4+3500 rpm" + "mixing tube 4+1500 rpm).
FIG. 6 is a schematic of parameters of a mixing tube.
Fig. 7 is a mix test set four: single tube dynamic mixing+single tube dynamic mixing (using "mixing tube 4+3500 rpm" + "mixing tube 4+3500 rpm, both turning to the same mixing pattern).
Fig. 8 is a mix test set four: single tube dynamic mixing+single tube dynamic mixing (using "mixing tube 4+3500 rpm" + "mixing tube 4+3500 rpm, both turning to opposite mixing plots).
Fig. 9 is a practical view of the mixing effect obtained by the mixing method of the present application.
Fig. 10 is an actual view of the glue mixing apparatus of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
< development thought >
The application aims to solve the problems that: the mixing problem of two glues with larger viscosity difference. The viscosity of the A glue is 10 6 ～1.3×10 6 cps (25 ℃), the viscosity of the B gel was 3X 10 4 cps (25 ℃), and the viscosity of the two materials is 33-43 times different.
The application aims to solve the problems that:
how to solve the mixing problem of the two, the quantization indexes are as follows: and (5) judging whether the mechanical properties reach the standards after an aging test during glue mixing.
That is, the above problem is not solved by mixing two glues together at will.
The solution of the application mainly comprises the following aspects:
A. the influence of a rubber mixing pipe;
B. the mixing speed is influenced.
For this, the following sets of experiments were designed.
< determination of glue-out method >
The application adopts a screw pump.
The gear pump is used for about 3 hours in the test process, and the pump is damaged and cannot be used; the reason is that the adhesive A is large, the pipeline pressure is large, and the gear pump cannot meet the service life requirement under the condition of meeting the precision requirement; compared with a screw pump with a pipeline bearing a large pressure, the screw pump is free from damage in the whole use process.
< mix test group one: single tube static mixing
The test mode is as follows: mixing the adhesive A and the adhesive B, which are not stirred;
mixing results: uneven, obvious water ripple and almost no mixing of glue.
< mix test group two: single tube dynamic mixing)
After test group two, the inventors team recognized that: single tube static mixing is not viable. A "single tube dynamic mixing" test was designed.
The dynamic mixing was performed at a rotational speed of 500 rpm, 1000 rpm, 1500 rpm, 1800 rpm, 2000 rpm, 2500 rpm, 3500 rpm, 4000 rpm for each of the 4 types of dynamic mixing tubes.
Mixing tube 1: total length: 128mm, total count 16 sections, outer pipe diameter 16mm, inner pipe diameter 12mm and glue outlet diameter 5mm;
mixing rubber tube 2: total length: 180mm, 26 sections of total count, 16mm of outer pipe diameter, 12mm of inner pipe diameter and 5mm of glue outlet diameter;
mixing tube 3: total length: 151mm, total count 16 sections, outer diameter 21.5mm, inner diameter 17mm, and glue outlet diameter 5mm;
mixing tube 4: total length: 200mm, 26 sections of total count, 21.5mm of outer pipe diameter, 17mm of inner pipe diameter and 5mm of glue outlet diameter;
mixing rubber tube 5: total length: 216mm, 26 sections of total count, 21.5mm of outer pipe diameter, 17mm of inner pipe diameter and 5mm of glue outlet diameter;
from the 7×4 set of experiments described above, the following conclusions can be drawn:
A. influence of rubber mixing tube: along with the increase of the length and the pipe diameter of the pipe, the ripple of the mixed glue has a trend of reducing;
B. the influence of the rotating speed on the mixing of rubber is nonlinear, and the influence is related to the size of the mixing rubber pipe;
C. in all the above-mentioned tests, the complete mixing state was not achieved, and there was still a certain difference from the actual requirements.
Through analysis of a large amount of data, the influence can be quantitatively described by the following formula (semi-theoretical-semi-empirical formula) by adopting a data fitting method:
s (characterized by the size of the uniformity of the compound):
or:
r represents the rotation speed in revolutions per minute; l represents the total length of the tube in mm; d represents the inner pipe diameter in mm; l (L) Inner core Represents the length of the inner core in mm;
S threshold value A value of 0.55 is suitable.
< mix test group three: single tube dynamic+single tube static mixing)
The test was continued on the basis of test group two. The inventors propose a "double glue" approach. Namely, the glue A and the glue B are mixed in a single tube and then are mixed in a second mixing tube.
For this, the following three tests were designed:
a "mixing tube 3+3500 revolutions per minute" + "static mixing tube" was used;
a "mixing tube 4+3000 rpm" + "static mixing tube" was used;
a "mixing tube 4+3500 revolutions per minute" + "static mixing tube" was used;
conclusion: the eye water wave of the mixed cementation pulp has no obvious difference.
< mix test group four: single tube dynamic mixing+single tube dynamic mixing)
On the basis of test group three, the test was continued: a method of single-tube dynamic and single-tube dynamic mixing is provided. Namely, the glue A and the glue B are dynamically mixed by a single pipe, and the mixed glue is further mixed in a second mixing pipe.
For this, the following tests were designed:
the method comprises the steps of adopting a rubber mixing pipe with the speed of 4+2500 revolutions per minute and the speed of 1+500 revolutions per minute, 1500 revolutions per minute, 2500 revolutions per minute and 3500 revolutions per minute;
the method comprises the steps of adopting a rubber mixing pipe with the speed of 4+2500 revolutions per minute and the speed of 2+500 revolutions per minute, 1500 revolutions per minute, 2500 revolutions per minute and 3500 revolutions per minute;
the method comprises the steps of adopting a mixed rubber pipe 4+2500 rpm "+" mixed rubber pipe 4+500 rpm, 1500 rpm, 2500 rpm and 3500 rpm ";
the method comprises the steps of adopting a rubber mixing pipe 4+3000 rpm "+" and a rubber mixing pipe 4+500 rpm, 1500 rpm, 2500 rpm and 3500 rpm ";
the "mixing tube 4+3500 rpm" + "mixing tube 4+500 rpm, 1500 rpm, 2500 rpm, 3500 rpm was used.
Conclusion: when the first pipe is at 2500 rpm, 3000 rpm or 3500 rpm, the second pipe is at 1500 rpm, 2500 rpm or 3500 rpm, the mixed glue obtained after the second pipe is mixed has no obvious difference in visual appearance, and still has tiny water waves visible to the naked eye; compared with the stirring of the first pipe and the 500 revolutions per minute of the second pipe, the effect is obviously improved; in addition, the above effect is significantly improved when there is no second tube mixing, as compared to single tube stirring, i.e., stirring at 2500 rpm, 3000 rpm or 3500 rpm in the first tube.
It should be noted that: when the two single pipes are stirred, the stirring effect is better when the stirring directions are opposite than the stirring method.
After the aging test, the pouring sealant is cracked, and the surface hardness is checked by a Shore durometer: the hardness of the surface after solidification is different, the normal hardness is 80+/-5, and the hardness of the measured partial area is 60-70.
Fig. 10 shows a mixing device of single-tube dynamic mixing and single-tube dynamic mixing, wherein the glue A and the glue B are mixed into a left mixing tube together, and after the mixing is completed, the glue A and the glue B are conveyed into a right mixing tube together for further mixing.
< foaming treatment: glue A preheating-
The glue A is heated to 30 ℃, 35 ℃,40 ℃, 45 ℃, 50 ℃ and 55 ℃ respectively, and then is mixed later.
Conclusion: the research method of a fourth glue mixing test group is adopted at 30-45 ℃, no water ripple exists under strong light after mixing, but the advanced solidification abnormality occurs in glue A and glue B in a glue mixing pipe at the temperature of more than 50 ℃; the hardness and the curing are normal after curing and aging at 45 ℃.
As shown in fig. 9, the mixing effect obtained by the mixing method of the present application requires the following points:
1) Preheating the temperature;
2) Double glue mixing and reverse glue mixing are adopted;
3) The first glue mixing process needs to satisfy the following conditions:
or alternatively, the first and second heat exchangers may be,
4) The second glue mixing process needs to meet the following conditions: the rotating speed of the second rubber mixing pipe is not lower than 1500 revolutions per minute, the inner pipe diameter of the second rubber mixing pipe is not lower than 16mm, and the total length of the pipe is not lower than 200mm.
The above examples are provided for convenience of description of the present application and are not to be construed as limiting the application in any way, and any person skilled in the art will make partial changes or modifications to the application by using the disclosed technical content without departing from the technical features of the application.
Claims (8)
1. A bi-component epoxy glue mixing method is used for mixing glue A and glue B; the viscosity of the A glue is 10 6 ～1.3×10 6 cps, the viscosity of the B glue is 3 multiplied by 10 4 cps；
The method is characterized by comprising the following steps of:
mixing the glue A and the glue B into a first glue mixing pipe together, stirring and mixing, and after mixing is completed; then the mixture is conveyed into a second rubber mixing pipe to be continuously stirred and mixed;
the total length of the first rubber mixing pipe is Lmm, the inner pipe diameter is Dmm, and the stirring speed is r revolutions per minute; l, D, r satisfies the following formula:
S threshold value Take a value of 0.55.
2. The method for mixing two-component epoxy glue according to claim 1, wherein the length of the inner core of the first glue mixing pipe is L Inner core mm, the inner pipe diameter is Dmm, and the stirring speed is r revolutions per minute; l (L) Inner core D, r satisfy the following formula:
S threshold value Take a value of 0.55.
3. The method of mixing two-component epoxy glue according to claim 2, wherein the first glue mixing tube has a D of 10,20 mm, r of 500,4000 rpm and L of 128,216 mm.
4. A two-component epoxy glue mixing method according to claim 3, wherein D of the first glue mixing tube is in the range of [10,20]]mm, r is [500,4000]]Revolutions per minute, L Inner core In [94,183 ]]mm。
5. A two-component epoxy glue mixing method according to any one of claims 1 to 4, wherein the rotational speed of the second glue mixing tube is not less than 1500 rpm.
6. A two-component epoxy glue mixing method according to any one of claims 1 to 4, wherein the internal pipe diameter of the second glue mixing pipe is not less than 16mm, and the total length of the pipe is not less than 200mm.
7. The method of mixing two-component epoxy glue according to any one of claims 1 to 4, wherein the directions of agitation in the first and second glue mixing tubes are opposite.
8. A two-component epoxy glue mixing process according to any one of claims 1 to 4, wherein glue a is heated to 30 ℃ to 45 ℃ before mixing and then subsequently mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310317070.9A CN116285817B (en) | 2023-03-29 | 2023-03-29 | Double-component epoxy glue mixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310317070.9A CN116285817B (en) | 2023-03-29 | 2023-03-29 | Double-component epoxy glue mixing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116285817A CN116285817A (en) | 2023-06-23 |
| CN116285817B true CN116285817B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310317070.9A Active CN116285817B (en) | 2023-03-29 | 2023-03-29 | Double-component epoxy glue mixing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150716A2 (en) * | 1984-01-05 | 1985-08-07 | Reinhardt-Technik GmbH & Co. | Dosing and mixing apparatus for high viscosity multiple component materials |
| WO2020125126A1 (en) * | 2018-12-20 | 2020-06-25 | 歌尔股份有限公司 | Glue mixing method for high-viscosity double-component glue |
| WO2020135387A1 (en) * | 2018-12-24 | 2020-07-02 | 歌尔股份有限公司 | Glue-mixing method for high-viscosity two-component glue |
| CN215610634U (en) * | 2020-11-16 | 2022-01-25 | 珠海德信科电子有限公司 | Static glue mixing device |
| KR20220049711A (en) * | 2020-10-15 | 2022-04-22 | (주)에스모터스 | Method for manufacturing the quick hardening epoxy resin prepreg |
-
2023
- 2023-03-29 CN CN202310317070.9A patent/CN116285817B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150716A2 (en) * | 1984-01-05 | 1985-08-07 | Reinhardt-Technik GmbH & Co. | Dosing and mixing apparatus for high viscosity multiple component materials |
| WO2020125126A1 (en) * | 2018-12-20 | 2020-06-25 | 歌尔股份有限公司 | Glue mixing method for high-viscosity double-component glue |
| WO2020135387A1 (en) * | 2018-12-24 | 2020-07-02 | 歌尔股份有限公司 | Glue-mixing method for high-viscosity two-component glue |
| KR20220049711A (en) * | 2020-10-15 | 2022-04-22 | (주)에스모터스 | Method for manufacturing the quick hardening epoxy resin prepreg |
| CN215610634U (en) * | 2020-11-16 | 2022-01-25 | 珠海德信科电子有限公司 | Static glue mixing device |
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| Publication number | Publication date |
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| CN116285817A (en) | 2023-06-23 |
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