Grease diffusivity or spreadability testing device

Abstract

The utility model belongs to the field of spreadability testing, and particularly relates to a grease diffusivity or spreadability testing device. The grease diffusivity or spreadability testing device can detect the illumination intensity of local and / or whole light penetrating through the test paper, and can reflect the change relation of the illumination intensity along with time. The light transmittance of the test paper before and after grease infiltration changes, and the expansion degree of the grease on the test paper can be accurately observed by monitoring the light intensity penetrating through the test paper in the test process; when the illumination intensity of the light penetrating through the whole test paper is tested, the expansion degree of the to-be-tested sample on the test paper can be visually seen, and the spreadability result accuracy is higher than that of direct measurement of the expansion area of the to-be-tested sample on the test paper.

Description

Technical Field

[0001] This utility model belongs to the field of spreadability testing, specifically relating to a device for testing the ability of oils to spread or spread. Background Technology

[0002] The spreading and dispersing properties of oils refer to their ability to spread, expand, and cover on skin or other surfaces. In cosmetics, the spreading properties of oils are one of the important indicators that directly affect the user experience. Currently, common methods for testing the spreading and dispersing properties of oils include directly applying oil to blotting paper or other fabrics and manually measuring the diameter of the spread after a certain period of time.

[0003] However, during the testing of oil spreadability, the rate of oil spreading on blotting paper or other fabrics varies in different directions, resulting in a non-circular spreading trajectory. Manually judging the diameter of this trajectory leads to significant experimental errors. Furthermore, simply judging spreadability based on the diameter of the spreading area also introduces substantial experimental errors. Similarly, testing the diffusion ability of oils faces the same problems as varying diffusion rates and significant errors in human judgment.

[0004] To address this issue, it is particularly important to provide a device for testing the spreading or dispersibility of oils. This device and method can reduce experimental errors caused by manual measurement. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a device for testing the spreading ability or spreadability of oils; this device and method can reduce experimental errors caused by manual measurement.

[0006] The concept of this utility model is as follows: Test paper (such as oil-absorbing paper, natural fiber paper, and synthetic fiber paper) before and after being soaked in grease has obvious changes in light transmittance. By monitoring the light intensity passing through the test paper, the extent of grease spread on the test paper can be effectively determined.

[0007] The first aspect of this utility model provides a device for testing the oil diffusion ability or spreadability.

[0008] Specifically, an oil diffusion or spreading ability testing device includes a support, a liquid addition mechanism, a light source, a transparent tray, test paper, and a light intensity testing mechanism.

[0009] The light source is mounted on the bracket and is used to illuminate the test paper.

[0010] The transparent tray is positioned below the light source, and the test paper is positioned on top of the transparent tray;

[0011] The light intensity testing mechanism is located below the transparent tray and is used to test the local and / or overall light intensity of the test paper;

[0012] The liquid dispensing mechanism is located above the transparent tray and is used to dispense liquid onto the test paper.

[0013] Compared with the prior art, the beneficial effects of the oil diffusion ability or spreadability testing device provided by the first aspect are as follows: the test paper will have changes in light transmittance before and after oil impregnation. During the test, by monitoring the light intensity transmitted through the test paper, the extent of oil spread on the test paper can be accurately observed.

[0014] Preferably, the liquid dispensing mechanism includes at least one of a syringe, a pipette, and a dropper.

[0015] Preferably, the light source includes a parallel light source, and the illumination direction of the light source is perpendicular to the test paper.

[0016] Preferably, the transparent tray is a rotating transparent tray. Using a rotating transparent tray allows the light intensity testing mechanism to detect the time taken for the sample to spread to the distance (from the center of the test paper to the light intensity testing area / point) at its fastest spread speed, and the time taken for it to completely spread to that distance (from the center of the test paper to the light intensity testing area / point).

[0017] Preferably, the rotational speed of the rotating transparent tray is 0.5-10 r / s; more preferably, the rotational speed of the rotating transparent tray is 0.5-3 r / s.

[0018] Preferably, the material of the test paper includes at least one of natural fibers and synthetic fibers; the natural fibers include at least one of cotton fibers, hemp fibers, wood pulp, protein fibers, and mineral fibers, and the synthetic fibers include at least one of polyester, nylon, acrylic, chlorofiber, vinylon, spandex, and polyolefins.

[0019] Preferably, the thickness of the test paper is 0.02-0.35 mm; more preferably, the thickness of the test paper is 0.02-0.15 mm.

[0020] Preferably, the porosity of the test paper is 60-98%; more preferably, the porosity of the test paper is 80-95%.

[0021] Preferably, the light intensity testing mechanism includes at least one of a light intensity meter and an illuminance meter.

[0022] Preferably, the light intensity testing mechanism and the light source are replaced by a transmittance meter. The design for testing light intensity can also be replaced by testing the transmittance intensity of the test paper.

[0023] Preferably, the number of light intensity testing mechanisms is 1-5; more preferably, the number of light intensity testing mechanisms is 1-2.

[0024] Preferably, when the number of light intensity testing mechanisms is greater than or equal to two, the distance between the test area of ​​each light intensity testing mechanism and the center of the test paper is not the same. By testing the light intensity changes at points with different distances from the center of the test paper, the diffusion trend of the sample under test can be more intuitively reflected.

[0025] Preferably, the testing device further includes a convex lens directly below the transparent tray, which is used to converge the light passing through the test paper. The light intensity testing mechanism is located at the lower focal point of the convex lens and is used to test the overall light intensity of the test paper.

[0026] The second aspect of this utility model provides a method for testing the oil diffusion ability or spreadability, which uses the oil diffusion ability or spreadability testing device described in any of the above claims, and the oil diffusion ability or spreadability testing method includes the following steps:

[0027] (1) With the light source turned on, the liquid dispensing mechanism containing the sample to be tested is used to drop the sample to be tested onto the center point of the test paper;

[0028] (2) Use the light intensity testing mechanism to detect the light intensity of the local and / or overall light passing through the test paper, and record the relationship between the light intensity and time.

[0029] Preferably, in step (1), the amount of liquid to be tested added is 10-300 μL; more preferably, the amount of liquid to be tested added is 20-200 μL.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] (1) The light transmittance of the test paper will change before and after the oil is soaked. During the test, the light intensity transmitted through the test paper can be monitored to accurately see the extent of the spread of the oil on the test paper.

[0032] (2) When the light intensity of the light passing through the test paper is tested, the extent of the spread of the sample on the test paper can be seen directly. The accuracy of the spread result is higher than that of directly measuring the spread area of ​​the sample on the test paper. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the test device in Example 1;

[0034] Figure 2 This is a schematic diagram of the test device in Example 2;

[0035] Figure label:

[0036] Support 100, liquid filling mechanism 200, light source 300, transparent tray 400, test paper 500, light intensity testing mechanism 600, convex lens 700. Detailed Implementation

[0037] To enable those skilled in the art to more clearly understand the technical solution described in this utility model, the following embodiments are provided for illustration. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. It should be noted that the following embodiments do not constitute a limitation on the scope of protection claimed by this utility model.

[0038] According to some embodiments of the present invention, an oil diffusion ability or spreading ability testing device is provided, the oil diffusion ability or spreading ability testing device includes a support, a liquid addition mechanism, a light source, a transparent tray, test paper, and a light intensity testing mechanism.

[0039] The light source is mounted on the bracket and is used to illuminate the test paper.

[0040] The transparent tray is positioned below the light source, and the test paper is positioned on top of the transparent tray;

[0041] The light intensity testing mechanism is located below the transparent tray and is used to test the local and / or overall light intensity of the test paper;

[0042] The liquid dispensing mechanism is located above the transparent tray and is used to dispense liquid onto the test paper.

[0043] According to some embodiments of the present invention, the liquid dispensing mechanism includes at least one of a syringe, a pipette, and a dropper.

[0044] According to some embodiments of the present invention, the light source includes a parallel light source, and the illumination direction of the light source is perpendicular to the test paper.

[0045] According to some embodiments of this utility model, the transparent tray is a rotating transparent tray. Using a rotating transparent tray allows the light intensity testing mechanism to detect the time taken for the sample to spread to the distance (from the center of the test paper to the light intensity testing area / point) at its fastest spread speed, and the time taken for it to completely spread to that distance (from the center of the test paper to the light intensity testing area / point).

[0046] According to some embodiments of the present invention, the rotational speed of the rotating transparent tray is 0.5-10 r / s; more preferably, the rotational speed of the rotating transparent tray is 0.5-3 r / s.

[0047] According to some embodiments of the present invention, the material of the test paper includes at least one of natural fibers and synthetic fibers; the natural fibers include at least one of cotton fibers, hemp fibers, wood pulp, protein fibers, and mineral fibers, and the synthetic fibers include at least one of polyester, nylon, acrylic, chlorofiber, vinylon, spandex, and polyolefin.

[0048] According to some embodiments of the present invention, the thickness of the test paper is 0.02-0.35 mm; more preferably, the thickness of the test paper is 0.02-0.15 mm.

[0049] According to some embodiments of the present invention, the porosity of the test paper is 60-98%; more preferably, the porosity of the test paper is 80-95%.

[0050] According to some embodiments of the present invention, the light intensity testing mechanism includes at least one of a light intensity meter and an illuminance meter.

[0051] According to some embodiments of this utility model, the light intensity testing mechanism and the light source are replaced by a transmittance meter. The design for testing light intensity can also be replaced by testing the transmittance intensity of the test paper.

[0052] According to some embodiments of the present invention, the number of light intensity testing mechanisms is 1-5; more preferably, the number of light intensity testing mechanisms is 1-2.

[0053] According to some embodiments of this utility model, when the number of light intensity testing mechanisms is greater than or equal to two, the distance between the testing area of ​​each light intensity testing mechanism and the center of the test paper is not the same. By testing the light intensity changes at points with different distances from the center of the test paper, the diffusion trend of the sample under test can be more intuitively reflected.

[0054] According to some embodiments of the present invention, the testing device further includes a convex lens located directly below the transparent tray, which is used to converge the light passing through the test paper. The light intensity testing mechanism is located at the lower focal point of the convex lens and is used to test the overall light intensity of the test paper.

[0055] The test paper used in Embodiments 1 and 2 of this utility model is a white circular polytetrafluoroethylene filter membrane with a porosity of 82%, a light transmittance of 14% in a dry state, and a thickness of 30μm. Example 1

[0056] A testing device and method for testing the oil diffusion or spreading ability.

[0057] The testing method for oil spreading ability or oil spreading property uses a testing device. Figure 1 This is a schematic diagram of the testing device in Example 1. The testing device includes a support 100, a liquid addition mechanism 200, a light source 300, a transparent tray 400, a test paper 500, and a light intensity testing mechanism 600.

[0058] The light source 300 is set on the bracket 100 and is used to illuminate the test paper 500. The light source 300 is a parallel lamp with a disc base and the irradiation direction is perpendicular to the test paper 500.

[0059] A transparent tray 400 is positioned below the light source 300. The transparent tray 400 is a rotating transparent tray with a rotation speed of 1 r / S. The test paper 500 is positioned on top of the transparent tray 400.

[0060] The light intensity testing mechanism 600 is located below the transparent tray 400 and is used to test the local and / or overall light intensity of the test paper 500. The light intensity testing mechanism 600 is an illuminance meter.

[0061] The liquid addition mechanism 200 is located above the support 100 and is used to add liquid to the test paper 500.

[0062] The test method for oil spreading ability or oil spreading property includes the following steps:

[0063] (1) With the light source on, add 100 μL of the sample to be tested to the center of the test paper (white circular polytetrafluoroethylene filter membrane) using the liquid dispensing mechanism (syringe) containing the sample to be tested, and start timing;

[0064] (2) Use a light intensity testing device (illuminance meter) to test the light intensity of light passing through the test paper at a distance of 2 cm from the center of the test paper for 60 s, and record the relationship between light intensity and time and the time of light intensity change in Table 1.

[0065] The samples to be tested were Sample I (Isonononyl isononanoate 42131-25-9, colorless and transparent), Sample II (Nononyl nonanoate 87310-12-1, colorless and transparent), and Sample III (Nonol 143-08-8, colorless and transparent).

[0066] Table 1. Relationship between light intensity and time, and the time when light intensity begins to change.

[0067] 0s light intensity 20s light intensity 40s light intensity 60s light intensity Time when light intensity begins to change Sample I 57lux 58 lux 281 lux 283 lux 36s Sample II 54 lux 56 lux 322lux 324 lux 34s Sample III 54 lux 56 lux 452 lux 455 lux 24s

[0068] It can be seen that sample III has the fastest spreading speed, and the spreading property of sample III is significantly greater than that of sample I and sample II; the spreading speeds of sample I and sample II are similar.

[0069] However, the light intensity of sample II after being spread on the test paper was slightly greater than that of sample I.

[0070] Reverse absorption: Overlap a new test paper (white circular PTFE filter membrane) onto the test paper after 60 seconds of expansion, 1 g / cm³. 2 The sample was compacted with a pressure plate for 10 seconds to back-absorb the surface layer that had not fully diffused; the weight change of the new test paper before and after back-absorption was compared, and the average back-absorption mass was recorded after 10 repetitions and the average back-absorption volume of the sample was calculated.

[0071] The average back-absorption volume for sample I was 18.8 μL, for sample II it was 17.0 μL, and for sample III it was 12.4 μL. Example 2

[0072] A testing device and method for testing the oil diffusion or spreading ability.

[0073] The testing method for oil spreading ability or oil spreading property uses a testing device. Figure 2 This is a schematic diagram of the test device in Example 2. The test device includes a support 100, a liquid adding mechanism 200, a light source 300, a transparent tray 400, test paper 500, a light intensity testing mechanism 600, and a convex lens 700.

[0074] The light source 300 is set on the bracket 100 and is used to illuminate the test paper 500. The light source 300 is a parallel lamp with a disc base and the irradiation direction is perpendicular to the test paper 500.

[0075] A transparent tray 400 is positioned below the light source 300. The transparent tray 400 is a rotating transparent tray with a rotation speed of 1 r / S. The test paper 500 is positioned on top of the transparent tray 400.

[0076] The light intensity testing mechanism 600 is located below the transparent tray 400 and is used to test the local and / or overall light intensity of the test paper 500. The light intensity testing mechanism 600 is an illuminance meter.

[0077] The convex lens 700 is located directly below the transparent tray 400 and is used to converge the light passing through the test paper 500. The light intensity testing mechanism 600 is located at the focal point below the convex lens 700 and is used to test the overall light intensity of the test paper 700.

[0078] The liquid addition mechanism 200 is mounted on the bracket 100 and is used to add liquid to the test paper 500.

[0079] The test method for oil spreading ability or oil spreading property includes the following steps:

[0080] (1) With the light source on, add 100 μL of the sample to be tested to the center of the test paper (white circular polytetrafluoroethylene filter membrane) using the liquid dispensing mechanism (syringe) containing the sample to be tested, and start timing;

[0081] (2) Use a light intensity testing device (illuminance meter) to test the light intensity of light passing through the test paper at a distance of 2 cm from the center of the test paper for 60 s, and record the relationship between light intensity and time in Table 2.

[0082] The samples to be tested were Sample I (Isonononyl isononanoate 42131-25-9, colorless and transparent), Sample II (Nononyl nonanoate 87310-12-1, colorless and transparent), and Sample III (Nonol 143-08-8, colorless and transparent).

[0083] Table 2 Relationship between light intensity and time

[0084] 0s light intensity 20s light intensity 40s light intensity 60s light intensity Sample I 1495 lux 4673 lux 6412 lux 6652 lux Sample II 1456 lux 5889 lux 7629 lux 7814 lux Sample III 1473 lux 8711 lux 11613 lux 11657 lux

[0085] After 60 seconds, the spreading area was 22.8 cm² for Sample I. 2 Sample II 23.1cm 2 Sample III 24.8cm 2 .

[0086] The greater the diffusion capacity of a sample, the more gaps it can diffuse into, resulting in stronger light transmission of the test paper. By comparison, the light intensity of sample II is greater than that of sample I, indicating that the diffusion capacity of sample II is greater than that of sample I.

[0087] By testing the light intensity of the light passing through the entire test paper, the extent to which the sample spreads on the test paper can be seen directly. The accuracy of the spread result is higher than that of directly measuring the spread area of ​​the sample on the test paper.

Claims

1. A device for testing the spreading ability or spreadability of oils, characterized in that, The oil diffusion or spreadability testing device includes a support, a liquid addition mechanism, a light source, a transparent tray, test paper, and a light intensity testing mechanism. The light source is mounted on the bracket and is used to illuminate the test paper. The transparent tray is positioned below the light source, and the test paper is positioned on top of the transparent tray; The light intensity testing mechanism is located below the transparent tray and is used to test the local and / or overall light intensity of the test paper; The liquid dispensing mechanism is located above the transparent tray and is used to dispense liquid onto the test paper.

2. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, The light source includes a parallel light source, and the illumination direction of the light source is perpendicular to the test paper.

3. The oil diffusion ability or spreadability testing device according to claim 1, characterized in that, The transparent tray is a rotating transparent tray.

4. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, The test paper is made of at least one of natural fibers and synthetic fibers.

5. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, The porosity of the test paper is 60-98%.

6. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, The light intensity testing mechanism and the light source are replaced by a transmittance meter.

7. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, The number of light intensity testing mechanisms is 1-5.

8. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, When the number of light intensity testing mechanisms is greater than or equal to 2, the distance between the testing area of ​​each light intensity testing mechanism and the center of the test paper is not the same.

9. The oil spreading ability or spreading property testing device according to claim 1, characterized in that, The testing device also includes a convex lens located directly below the transparent tray, which is used to focus the light passing through the test paper; The light intensity testing mechanism is located at the lower focal point of the convex lens and is used to test the overall light intensity of the test paper.

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