CN102680361A - Method and device for measuring flowability of rubber compound - Google Patents
Method and device for measuring flowability of rubber compound Download PDFInfo
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- CN102680361A CN102680361A CN2012101509414A CN201210150941A CN102680361A CN 102680361 A CN102680361 A CN 102680361A CN 2012101509414 A CN2012101509414 A CN 2012101509414A CN 201210150941 A CN201210150941 A CN 201210150941A CN 102680361 A CN102680361 A CN 102680361A
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Abstract
The invention discloses a device for measuring the flowability of a rubber compound. The device comprises an upper die for downwards pressing the rubber compound of which the flowability is required to be tested, a lower die for bearing the rubber compound of which the flowability is required to be tested and the rubber compound of which the flowability is required to be tested, wherein the lower die is provided with a groove for bearing the rubber compound of which the flowability is required to be tested; and a round hole with the fixed diameter is formed in the bottom of the groove. According to the device disclosed by the invention, the flowability of the rubber compound is quantitatively determined, so that the evaluation criteria for the characteristics of the rubber compound are enriched and the characteristics of the rubber compound can be better measured.
Description
Technical field
The invention belongs to the rubber size technical field of measurement and test, particularly a kind of rubber size device for measuring flowability.
Background technology
The flowing property of sizing material has direct relation to the quality of later stage finished product in the rubber industry; The flowing property shortcoming of rubber size can directly cause sizing material to fill the mould deficiency; Cause similar defectives such as owing casting, existing method of testing is just to measure the Mooney viscosity of rubber size, thinks that the filling capacity of the interchange that Mooney viscosity is identical is similar; But find in the actual production; Mooney viscosity can not complete reaction rubber size characteristic, especially rubber size flowing property, fall far short sometimes for the flowing property of rubber size with identical Mooney viscosity; So the test of existing rubber size performance is badly in need of carrying out to the performance detection that flows, for the moulding of sizing material provides the reference that can quantize.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of can measure the mobile device of rubber size, overcomes the characteristic that can't adopt Mooney viscosity to estimate rubber size in the prior art separately.
For solving the problems of the technologies described above, the present invention provides a kind of mobile device of rubber size of measuring, and it comprises:
Be used to press down the mold of the rubber size of needs flowability to be tested; Be used to carry bed die and the rubber size of needs flowability to be tested of the rubber size of needs flowability to be tested; Said bed die has a groove that is used to carry the rubber size of needs flowability to be tested, has a circular hole with fixed diameter in the bottom of said groove.
Wherein, the diameter of said circular hole is preferably 1～5mm.
The present invention also provides and has adopted the mobile device of above-mentioned measurement rubber size to carry out the mobile measuring method of rubber size, and it comprises:
The first step, placement needs the rubber size of flowability to be tested in the groove of said bed die;
Second step; Adopting said mold under constant compression force, to press down the rubber size of said needs flowability to be tested under the condition of constant temperature; Continue official hour; Under the effect of constant pressure, the rubber size of said needs flowability to be tested flows out from the circular hole of said bed die bottom portion of groove;
The 3rd goes on foot, and measures the shift value of said mold, the promptly quantitative flowing property that reflects said rubber size.
In this measuring method; Said rubber size acts on a constant time under constant temperature and pressure power; Rubber size is through the aperture of extruding meeting through the fixed diameter of said bed die bottom portion of groove; The rubber size amount that different rubber sizes flows out under identical pressure, temperature and time extruding is different, and this just quantizes the flowability of different rubber sizes, because the fixed size of bed die; So only need measure the distance that mold is passed by under the set point of temperature time pressure, the flowing property that reflects certain rubber size that just can be quantitative.
Wherein, said constant pressure is different because selected sizing material is different.
Wherein, the shift value of said mold is the descending distance of mold, and this distance is measured through a distance measuring sensor, and the accuracy requirement of sensor reaches more than the 0.005mm.
Wherein, said official hour is preferably 5～15s.
Wherein, the temperature range of said stationary temperature is 60～120 ℃.
Beneficial effect of the present invention:
Adopt the mobile device of measurement rubber size of the present invention that the flowability of rubber size is carried out quantitative measurement, enriched the evaluation criterion of the characteristic of rubber size, can better weigh the characteristic of rubber size.
Description of drawings
Fig. 1 the present invention measures the mobile schematic representation of apparatus of rubber size;
Wherein, 1-mold; The 2-bed die; 3-rubber size to be measured; The 4-circular hole.
Embodiment
The present invention provides a kind of mobile device of rubber size of measuring, and it comprises:
Be used to press down the mold of the rubber size of needs flowability to be tested; Be used to carry bed die and the rubber size of needs flowability to be tested of the rubber size of needs flowability to be tested; Said bed die has a groove that is used to carry the rubber size of needs flowability to be tested, has a circular hole with fixed diameter in the bottom of said groove.
Wherein, the diameter of said circular hole is preferably 1～5mm.
Wherein, rubber size is the rubber after mixing, and comprising natural rubber and various adjuvant, these things carry out abundant mixed sizing material together and are rubber size.
The present invention also provides and has adopted the mobile device of above-mentioned measurement rubber size to carry out the mobile measuring method of rubber size, and it comprises:
The first step, placement needs the rubber size of flowability to be tested in the groove of said bed die;
Second step; Keeping adopting said mold under constant compression force, to press down the rubber size of said needs flowability to be tested under the constant temperature under 60～120 ℃ the temperature; Continue official hour; Under the effect of constant pressure, the rubber size of said needs flowability to be tested flows out from the circular hole of said bed die bottom portion of groove;
The 3rd goes on foot, and measures the shift value of said mold, the promptly quantitative flowing property that reflects said rubber size.
Said constant pressure is different because selected sizing material is different, preferable range be 0.3MPa to 3.2MPa, tread rubber for example, its requirement is tested under the pressure of 1.8MPa.
The shift value of said mold is the descending distance of mold, and this distance is measured through a distance measuring sensor, and the accuracy requirement of sensor reaches more than the 0.005mm, for example the P10 sensor of Sylvac.
Said official hour is preferably 5～15s.
In this measuring method; Said rubber size acts on a constant time under constant temperature and pressure power; Rubber size is through the aperture of extruding meeting through the fixed diameter of said bed die bottom portion of groove; The rubber size amount that different rubber sizes flows out under identical pressure, temperature and time extruding is different, and this just quantizes the flowability of different rubber sizes, because the fixed size of bed die; So only need measure the distance that mold is passed by under the set point of temperature time pressure, the flowing property that reflects certain rubber size that just can be quantitative.
The carbon black filled sizing material of selecting SBR1500 rubber polymer system is as the standard sizing material, and this standard glue is a kind of check that is used for equipment, through measuring the result that this sizing material test obtains complete machine is tested.
The carbon black filled sizing material of SBR1500 rubber polymer system is 1.5MPa as the test pressure of standard sizing material, and temperature is 80 ℃, and the test duration is 11s, and mobile distance is 0.06mm.
The purpose of measuring distance is exactly to pass through constant pressure (sizing material of different series is selected different pressure); The permanent time; The descending distance of mold reflects the flowability of sizing material under the stationary temperature; The descending distance of mould and mobile parameter not accurately formula convert, therefore be to adopt distance to characterize flowability, have a distance and mobile correspondence table.
σ＝η(dε/dt)；
In the formula, σ is a shear stress, and d ε/dt is a shearing deformation speed, and η is a viscosity;
The area A stressed owing to the sizing material in the mould is constant, so
D ε=dL ', dL ' is a displacement variable in the formula, with dL ' equalization, mean value is L, then
σ=η (d ε/dt)=η (Ad L '/dt)=K η (Ad L/dt), wherein K is a coefficient
Under certain pressure, σ=BP, P is strong by being exerted pressure, and B is a coefficient
Formula then
Finally be converted into BP=K η (Ad L/dt), release can get
Kη＝BP/(Ad?L/dt)，
Flowing property through above-mentioned then sizing material just can be through sizing material the variable quantity of thickness quantize.The standard that quantizes is every variations of thickness 0.01mm 1 unit of the liquidity scale increase then of sizing material.
Below adopt embodiment and accompanying drawing to specify embodiment of the present invention, how the application technology means solve technical matters to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and enforcement according to this.
As shown in Figure 1; The present invention measures the mold 1 that the mobile device of rubber size comprises the rubber size that is used to press down needs flowability to be tested; Be used to carry bed die 2 and the rubber size 3 of needs flowability to be tested of the rubber size of needs flowability to be tested; Said bed die has a groove that is used to carry the rubber size of needs flowability to be tested, has a circular hole 4 with fixed diameter in the bottom of said groove.
Adopting the mobile method of measurement mechanism measurement rubber size among Fig. 1 is the rubber size 3 that placement needs flowability to be tested in the groove of bed die 2; Adopting mold 1 under constant compression force F, to press down said rubber size 3 under the condition of 80 ℃ of constant temperature; Continue 10s, under the effect of constant pressure F, said rubber size 3 flows out from the circular hole 3 of said bed die 2 bottom portion of groove; Adopt the shift value m of the said mold 1 of P10 sensor measurement of Sylvac; Be the quantitative flowing property that reflects said rubber size 3, through detecting, the shift value that tread rubber is measured under the constant pressure of 1.8MPa is 1.8mm.
This intellecture property of primary enforcement that all are above-mentioned is not set restriction this new product of other forms of enforcement and/or new method.Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on new product of the present invention.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (7)
1. measure the mobile device of rubber size for one kind, it is characterized in that, comprising:
Be used to press down the mold of the rubber size of needs flowability to be tested; Be used to carry bed die and the rubber size of needs flowability to be tested of the rubber size of needs flowability to be tested; Said bed die has a groove that is used to carry the rubber size of needs flowability to be tested, has a circular hole with fixed diameter in the bottom of said groove.
2. device as claimed in claim 1 is characterized in that: the diameter of said circular hole is preferably 1～5mm.
3. adopt claim 1 or the mobile device of 2 described measurement rubber sizes to carry out the mobile measuring method of rubber size, it is characterized in that, comprising:
The first step, placement needs the rubber size of flowability to be tested in the groove of said bed die;
Second step; Adopting said mold under constant compression force, to press down the rubber size of said needs flowability to be tested under the condition of constant temperature; Continue official hour; Under the effect of constant pressure, the rubber size of said needs flowability to be tested flows out from the circular hole of said bed die bottom portion of groove;
The 3rd goes on foot, and measures the shift value of said mold, the promptly quantitative flowing property that reflects said rubber size.
4. measuring method as claimed in claim 3 is characterized in that: said constant pressure is different because selected sizing material is different.
5. like claim 3 or 4 described measuring methods, it is characterized in that: the shift value of said mold is the descending distance of mold, and this distance is measured through a distance measuring sensor.
6. like the described measuring method of claim 3 to 5, it is characterized in that: said official hour is preferably 5～15s.
7. like the described measuring method of claim 3 to 5, it is characterized in that: the temperature range of said stationary temperature is 60～120 ℃.
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| CN201210150941.4A CN102680361B (en) | 2012-05-16 | 2012-05-16 | Method and device for measuring flowability of rubber compound |
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| CN201210150941.4A CN102680361B (en) | 2012-05-16 | 2012-05-16 | Method and device for measuring flowability of rubber compound |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075963A (en) * | 2014-06-23 | 2014-10-01 | 华南理工大学 | Testing method and testing device for representing Mooney viscosity of reclaimed rubber in online manner and application of testing method |
| CN106404605A (en) * | 2016-11-18 | 2017-02-15 | 湖南大学 | Reusable optical glass viscosity measuring tool |
| CN109187274A (en) * | 2018-10-19 | 2019-01-11 | 青岛科技大学 | A kind of full-automatic mixed sheet mobility-detected instrument and its detection method |
| CN109323957A (en) * | 2018-09-19 | 2019-02-12 | 青岛励赫化工科技有限公司 | A kind of component of automatic detection rubber mobility |
| CN112485157A (en) * | 2020-12-15 | 2021-03-12 | 中国科学院空间应用工程与技术中心 | Soft material fluidity detection device |
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| CN202041436U (en) * | 2011-01-17 | 2011-11-16 | 国家复合改性聚合物材料工程技术研究中心 | Testing device for testing flowability of injected glue |
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| CN202041436U (en) * | 2011-01-17 | 2011-11-16 | 国家复合改性聚合物材料工程技术研究中心 | Testing device for testing flowability of injected glue |
Non-Patent Citations (1)
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| 那洪东: "橡胶在模具内的流动、硫化行为及其模具设计", 《世界橡胶工业 》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075963A (en) * | 2014-06-23 | 2014-10-01 | 华南理工大学 | Testing method and testing device for representing Mooney viscosity of reclaimed rubber in online manner and application of testing method |
| CN106404605A (en) * | 2016-11-18 | 2017-02-15 | 湖南大学 | Reusable optical glass viscosity measuring tool |
| CN109323957A (en) * | 2018-09-19 | 2019-02-12 | 青岛励赫化工科技有限公司 | A kind of component of automatic detection rubber mobility |
| CN109187274A (en) * | 2018-10-19 | 2019-01-11 | 青岛科技大学 | A kind of full-automatic mixed sheet mobility-detected instrument and its detection method |
| CN109187274B (en) * | 2018-10-19 | 2023-09-26 | 青岛科技大学 | Full-automatic mixed film fluidity detector and detection method thereof |
| CN112485157A (en) * | 2020-12-15 | 2021-03-12 | 中国科学院空间应用工程与技术中心 | Soft material fluidity detection device |
| CN112485157B (en) * | 2020-12-15 | 2022-11-29 | 中国科学院空间应用工程与技术中心 | Soft material fluidity detection device |
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| CN102680361B (en) | 2014-12-10 |
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Inventor after: Li Hongwei Inventor after: Chen Hu Inventor after: Bian Xiangzhong Inventor after: Yi Shanhui Inventor after: Yu Xin Inventor after: Zhao Yueyue Inventor before: Li Hongwei Inventor before: He Guihao Inventor before: Chen Hu Inventor before: Suo Bin Inventor before: Bian Xiangzhong |
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Free format text: CORRECT: INVENTOR; FROM: LI HONGWEI HE GUIHAO CHEN HU SUOBIN BIAN XIANGZHONG TO: LI HONGWEI CHEN HUBIAN XIANGZHONG YI SHANHUI YU XIN ZHAO YUEYUE |
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