A method of dispensing two-component sealant
By separating the B-component adhesive into light and dark components and using an alternating filling method, the problem of difficulty in judging the mixing uniformity when both components of the sealant are dark is solved, thus achieving a visual judgment of the mixing uniformity and improving the construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU JITIAN NEW MATERIALS CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-31
AI Technical Summary
In existing technologies, when both components of a sealant are dark in color, it is difficult to judge the uniformity of mixing by color appearance, which makes it difficult to guarantee the quality of construction.
The B component of the rubber compound is separated into light and dark parts, and is filled in cartridge bottles using an alternating filling method to form dark and light color zones. The uniformity of mixing is judged by the color appearance during mixing.
It enables the judgment of mixing uniformity through color appearance, ensuring the consistency and efficiency of construction quality, and the superiority of the mixing effect is verified through hardness testing.
Smart Images
Figure CN122482080A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sealant technology, and in particular to a method for filling a two-component sealant in a cartridge package based on color configuration. Background Technology
[0002] Semkits are integrated packaging systems primarily designed for two-component sealants, potting compounds, and adhesives. Two-component sealants can be stored separately within the semkit, making them suitable for high-end manufacturing sectors such as aerospace, electronics, and automotive. Currently, the most commonly used semkit is the injection-type semkit bottle. Generally, when component A of a two-component sealant in a cartridge bottle is a dark-colored adhesive and component B is a light-colored adhesive, the uniformity of the mixture can be visually inspected to determine its mixing consistency. Alternatively, the mixed adhesive can be squeezed onto an A4-sized sheet of white paper, folded in half, pressed thin, and then unfolded to check the color uniformity. The presence of light-colored or even white streaks within dark or black areas indicates sufficient mixing (refer to the butterfly test in GB16776-2005 "Silicone Structural Sealants for Buildings"). However, when both components of the sealant are either dark or light-colored, it becomes difficult to determine whether the mixture is uniform.
[0003] For liquid organic rubber polymer sealant formulations, such as aviation polysulfide sealants used in the windshields of civil aircraft cockpits, carbon black is needed for rubber reinforcement to meet the performance requirements of rubber reinforcement, UV resistance, and weather aging resistance after curing. The addition of carbon black makes both components in the cartridge bottle black. Taking a 6-ounce cartridge bottle as an example, due to the packaging form and capacity limitations, the volume of manganese dioxide curing paste component (component A) filled into the injection tube is generally only about 10 ml. The carbon black component in the total sealant formulation typically accounts for about 1% to 5% of the total (about 100 mL), with a volume of about 1 to 5 ml. If all the carbon black is added to component A and filled into the injection tube, the volume of component A would exceed the total capacity of the injection tube, making filling impossible. Therefore, some or even all of the formulated amount of carbon black must be added to component B. After homogenization, component B is dyed black, resulting in both components A and B being black. In this situation, visually inspecting the uniformity of the mixed materials by their color and appearance, or using the butterfly test method, cannot accurately determine whether the mixture is uniform. This problem has persisted in the industry due to the long-standing fixed product formulations of leading companies, becoming a widespread issue that affects subsequent construction quality. The inability to determine uniformity through visual inspection or standard methods leads to over-manipulation in the two-component sealant mixing process, resulting in inefficient work or over-reliance on personnel experience, hindering the development of a systematic and standardized judgment process. Summary of the Invention
[0004] The present invention aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the present invention aims to provide a method for color configuration and filling of a two-component sealant in cartridge packaging. By adjusting the color configuration of a two-component sealant in which both components A and B are black and controlling the filling method of component B, the problem of difficulty in determining whether existing two-component cartridge adhesives in which both components are black are mixed evenly is solved.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A method for color configuration and filling of a two-component sealant in cartridge packaging, wherein the cartridge packaging bottle includes an injection tube and a main tube; the two-component sealant includes a dark-colored component A and a dark-colored component B. After color matching of component B, the two-component sealant is filled in. The color configuration of the B component rubber compound includes the following steps: the total formula of the B component rubber compound remains unchanged, and the different components in the B component rubber compound are physically separated to obtain a light-colored B1 component rubber compound and a dark-colored B2 component rubber compound; wherein, the dark and light colors are defined by the CIE lightness L* value, and an L* value ≥ 70 is considered a light color. The filling of the two-component sealant includes the following steps: filling the injection tube with component A adhesive; filling the main cylinder with component B1 adhesive and component B2 adhesive; wherein component B1 adhesive and component B2 adhesive are filled alternately in the main cylinder.
[0006] In some embodiments, the alternating interval filling includes radial alternating interval filling and axial alternating interval filling.
[0007] In some embodiments, based on the cross-section of the main cylinder, the radial alternating interval filling is carried out in a fan-shaped alternating pattern with the center of the cross-section of the main cylinder as the center; or, the radial alternating interval filling is carried out alternately from the center outward, divided into a central region and an outer annular region, wherein the outer layer includes one or more layers.
[0008] In some embodiments, the axial alternating filling method includes: filling the middle of the main cylinder with B1 component rubber or B2 component rubber, and filling the two ends with another component; or, the B1 component rubber and B2 component rubber are distributed at equal or unequal intervals.
[0009] In some embodiments, the sector areas formed by component B1 and component B2 are equal, or the sector area formed by one component is 1 to 5 times that formed by the other component. Preferably, the sector area formed by one component is 2 to 3 times that formed by the other component.
[0010] In some embodiments, during the axial alternating filling, component B1 and component B2 are filled in the main cylinder in an alternating sequence; during the radial alternating filling, component B1 and component B2 are filled simultaneously.
[0011] In some embodiments, the B component rubber compound includes a matrix, a dark component, and a light component; the dark component and the light component are independently fillers or additives; the matrix includes a matrix resin or a matrix rubber. The color configuration of component B rubber compound includes the following steps: The matrix of the B component adhesive is divided into a first matrix and a second matrix; the light-colored component is divided into a first light-colored component and a second light-colored component; the first light-colored component is mixed with the first matrix to obtain a light-colored B1 component; the second light-colored component and the dark-colored component are mixed with the second matrix to obtain a dark-colored B2 component.
[0012] In some embodiments, the volume of the first substrate is 1 to 5 times the volume of the second substrate. Preferably, the volume of the first substrate is 1 to 2 times the volume of the second substrate.
[0013] In some embodiments, the volume of the first light-colored component is 1 to 5 times the volume of the second light-colored component. Preferably, the volume of the first light-colored component is 1 to 2 times the volume of the second light-colored component.
[0014] In some embodiments, the A component of the adhesive comprises a curing agent and / or other additives; the B component comprises a matrix, fillers, and additives.
[0015] It should be understood that the specific formulations of components A and B can be selected according to actual needs. The filling method of the present invention only requires separating component B into dark-colored and light-colored components, but does not require limiting the specific formulation. For example, the dark-colored component can be a black component, and the light-colored component can be a white component.
[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a method for color configuration and filling of a two-component sealant in cartridge packaging. Using a cartridge-packaged glue bottle, the dark-colored component B is separated into a light-colored component and a dark-colored component. This specific color configuration, combined with a specific filling method, creates dark and light-colored partitions within the main cylinder of the cartridge bottle, allowing for normal storage after sealing. When the dark-colored components A and B need to be mixed, the presence of light and dark partitions within component B allows for judging the uniformity of mixing by observing the color appearance of the mixed materials. This overcomes the limitation of traditional cartridge-packaged glue bottles where visual assessment of mixing uniformity is difficult when both components are dark-colored. This invention achieves controlled homogeneous mixing of component A in the injection tube and component B in the main cylinder of the cartridge-packaged glue bottle. Furthermore, by measuring and analyzing the hardness of the cured glue, this invention verifies that the filling method achieves superior mixing results. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the alternating axial loading of components B1 and B2 in an embodiment of the present invention.
[0018] Figure 2 This is a schematic diagram of the radially alternating filling of components B1 and B2 in an embodiment of the present invention.
[0019] Figure 3 This is a schematic diagram of the two-component sealant filling method in Embodiment 1 of the present invention.
[0020] Figure 4 This is a schematic diagram of the two-component sealant filling method in Embodiment 2 of the present invention.
[0021] Figure 5 This is a schematic diagram of the filling method of the two-component sealant in Comparative Example 1 of the present invention.
[0022] Figure 6 This is a schematic diagram of the spectral bands used in the hardness test of this invention. Detailed Implementation
[0023] The present invention will be further described in detail below through specific embodiments. Unless otherwise specified, the raw materials, reagents, or apparatus used in the embodiments and comparative examples are all available from conventional commercial sources or can be obtained by existing technical methods. Unless otherwise specified, the experimental or testing methods are conventional methods in the art.
[0024] A method for color configuration and filling of a two-component sealant in cartridge packaging, wherein the cartridge packaging bottle includes an injection tube and a main tube; the two-component sealant includes a dark-colored component A and a dark-colored component B. After color matching of component B, the two-component sealant is filled in. The color configuration of the B component rubber compound includes the following steps: the total formula of the B component rubber compound remains unchanged, and the different components in the B component rubber compound are physically separated to obtain a light-colored B1 component rubber compound and a dark-colored B2 component rubber compound; wherein, the dark and light colors are defined by the CIE lightness L* value, and an L* value ≥ 70 is considered a light color. The filling of the two-component sealant includes the following steps: filling the injection tube with component A adhesive; filling the main cylinder with component B1 adhesive and component B2 adhesive; wherein component B1 adhesive and component B2 adhesive are filled alternately in the main cylinder.
[0025] The steps for using the injection cartridge packaging bottle are as follows: 1) Insert a solid thin rod into the inner cavity of the injection tube and push the tail plug component inside the injection tube forcefully towards the main cylinder. The tail plug, under pressure, transmits the pushing force to the end valve component inside the injection tube. The pushing force forces the end valve component inside the injection tube to move forward and open, thereby squeezing out the A glue from the injection tube and injecting it into the main cylinder container to contact the B glue; 2) Rotate the injection tube clockwise through mechanical or manual operation, and drive the stirring blades pre-installed in the main cylinder through the threaded connection to stir the main cylinder container. The material is rotary stirred, and the mixing is combined with the pumping or pushing and pulling of the injection tube in the main cylinder position. The two-component sealant can be sealed and stirred in the main cylinder packaging; 3) After mixing, pull the injection tube to the far end of the main cylinder, and then twist the injection tube counterclockwise. The injection tube is screwed off from the stirring paddle connection state and pulled out from the main cylinder. The stirring paddle remains in the main cylinder; 4) Finally, install the main cylinder container on the glue extrusion tool gun, push the tail cap in the main cylinder, and extrude the mixed glue for glue application.
[0026] It should be understood that "color configuration" refers to separating the B component rubber compound into dark and light-colored components while keeping the total composition and proportion of the B component rubber compound unchanged. These components are then filled in an alternating pattern to create a color configuration with alternating dark and light colors. Both the light and dark components contain matrix resin or matrix rubber.
[0027] Specifically, alternating interval filling methods include two categories: radial alternating interval filling method and axial alternating interval filling method.
[0028] Radial alternating filling refers to alternating filling along the circumference or radius of the main cylinder cross-section. For example, based on the main cylinder cross-section, filling is carried out in a fan-shaped alternating pattern with the center of the main cylinder cross-section as the center, such as... Figure 2The filling method can be either a 2-black-2-white circular distribution or a half-black-half-white filling method; or, with the center of the main cylinder cross-section as the center, filling can be done alternately from the center outwards, dividing the area into a central region and an outer annular region. The outer layer includes one or more layers, i.e., the central circular region contains either component B1 or component B2, while the outer annular region contains another component arranged in a ring. Figure 2 The filling method is characterized by a black inner core and a white outer perimeter.
[0029] In some embodiments, the axially alternating filling method includes: filling the middle of the main cylinder with component B1 or component B2, and filling the two ends with another component; or, component B1 and component B2 are distributed equidistantly or unequally. For example Figure 1 Filling methods include white-black-white, white-black-white-black-white, and white-black-white-black-white-white.
[0030] In some embodiments, the sector areas formed by components B1 and B2 are equal, or the sector area formed by one component is 1 to 5 times that formed by the other component. For example, 1, 2, 3, 4, or 5 times, preferably 2 to 3 times. Filling methods include... Figure 2 The filling method involves a half-black, half-white configuration, meaning that the fan-shaped areas formed by components B1 and B2 are equal. It should be understood that the area referred to in this invention is the cross-sectional area of the main cylinder at its midpoint along the height direction.
[0031] It should be noted that during the alternating filling process, the volume of component B1 and component B2 filled each time does not need to be particularly limited, as long as the filling results in an alternating dark-light color configuration.
[0032] In some embodiments, component B comprises a matrix resin, a dark component, and a light component; the dark component and the light component are independently fillers or additives; the matrix comprises a matrix resin or a matrix rubber. The color configuration of component B rubber compound includes the following steps: The matrix of component B is divided into a first matrix and a second matrix; the light-colored component is divided into a first light-colored component and a second light-colored component; the first light-colored component is mixed with the first matrix to obtain the light-colored component B1; the second light-colored component and the dark-colored component are mixed with the second matrix to obtain the dark-colored component B2.
[0033] The first matrix and the second matrix may have the same or different volumes; the first light-colored component and the second light-colored component may have the same or different volumes.
[0034] It should be understood that dark and light components are only limitations on the color of the components. The filling method of the present invention divides the different components in component B into components B1 and components B2 according to their colors before filling. Dark and light are not limitations on the types of components. For example, the filler can be dark or light. For example, conductive carbon black is a black filler (belonging to dark color), and titanium dioxide is a white filler (belonging to light color).
[0035] In some embodiments, the volume of the first matrix is 1 to 5 times the volume of the second matrix, preferably 1 to 2 times. The volume of the first light-colored component is 1 to 5 times the volume of the second light-colored component, preferably 1 to 2 times. The specific volumes of the matrix and the light-colored component can be selected according to the specific filling method. By controlling the volumes of the first and second matrix, and the first and second light-colored components, it is ensured that components B1 and B2 can be filled according to a specific filling method, avoiding large volume differences that would prevent the specific filling method from being met.
[0036] In some embodiments, component A includes a curing agent and / or other additives; component B includes a matrix, fillers, and additives.
[0037] It should be understood that the specific formulations of components A and B can be selected according to actual needs. The filling method of the present invention only requires separating component B into dark-colored and light-colored components, but does not need to limit the specific formulation.
[0038] The filling method of the present invention will be described in detail below with reference to specific embodiments and comparative examples.
[0039] Comparative Example 1 In Comparative Example 1, both components A and B are black two-component sealants. The formulation of the two-component sealant is shown in Table 1. Table 1. Formulation of the two-component sealant for Comparative Example 1
[0040] The preparation steps for component A are as follows: the raw materials are mixed according to the mass ratio, and mechanically stirred at room temperature and pressure to form a slurry. The slurry is then subjected to centrifugal vacuum degassing treatment and then allowed to stand at normal pressure to obtain homogeneous black clay of component A.
[0041] The material distribution steps for Group B are the same as those for Group A. After mixing and degassing, the black clay of Group B is obtained.
[0042] The loading method for Comparative Example 1 is as follows: Package component A separately into the syringe of the cartridge bottle; seal the valve of the syringe containing component A and fill the end cap inside the syringe. Install the syringe containing component A into the cartridge bottle and connect it to the internal agitator of the main bottle by screwing it clockwise.
[0043] Component B is poured into the main body of a 6-ounce (approximately 177 mL) cartridge adhesive bottle. Then, a 0.2 mm thick plastic flat band is used as a guide and also serves as an venting passage. The end cap is inserted into the main body and pushed to expel air and hold the adhesive in place. The plastic flat band is then removed to tighten the end cap, thus sealing the component B adhesive inside the bottle and obtaining the cartridge adhesive.
[0044] Comparative Example 1 yielded a two-component cartridge-type adhesive bottle packaged in black, where both component A and component B were black. The color configuration is as follows: Figure 5 As shown.
[0045] Example 1 The ingredients and total amount in Example 1 are the same as those in Comparative Example 1, except that component A remains unchanged, and component B is split into white component B1 and black component B2, as shown in Table 2.
[0046] Table 2 Formulation of the two-component sealant in Example 1
[0047] The feeding steps for component A in Example 1 are the same as those for component A in Comparative Example 1.
[0048] The preparation steps for components B1 and B2 in Example 1 are the same as those for component B in Comparative Example 1.
[0049] The filling method of Example 1, The filling method of component A is the same as that of component A in Comparative Example 1; Component B is first separated into components B1 and B2, as shown in Table 2. The filling steps and color control method are as follows: In the main tube of a 6-ounce (approximately 177 mL) cartridge adhesive bottle, first fill a portion of the white B1 component, then fill all of the B2 component, and finally fill the remaining white B1 component. Use a 0.2 mm thick plastic strip as a guide and venting passage. Insert the end cap into the main tube and push to expel air and hold the adhesive in place. Then remove the plastic strip to tighten the end cap, ensuring the B component adhesive is sealed inside the tube, resulting in the improved filling method for the cartridge adhesive. The filling method is as follows: Figure 3 As shown.
[0050] Test Example 1 1. In-tube mixing of components A and B of the cartridge adhesive: The cartridge adhesives of Comparative Example 1 and Example 1 were manually mixed. Component A from the injection tube was pushed into the main cylinder. The injection tube was rotated clockwise to drive the spirally connected stirring paddle to perform one revolution of stirring plus one pull of the stirring paddle, which was repeated 30 times. After completing the aforementioned 30 revolutions within 5 minutes, the injection tube was rotated counterclockwise to disengage the spiral connection with the stirring paddle, and the injection tube was pulled out. A dispensing nozzle was installed on the internal thread of the dispensing port of the cartridge adhesive main bottle, and then attached to a glue gun. The adhesive material in the cartridge adhesive bottle was extruded by pushing the tail plug of the main bottle.
[0051] 2. Testing of the adhesive after mixing components A and B: 1) Visual inspection of mixing uniformity (butterfly test): Referring to the butterfly test in GB16776-2005 "Silicone Structural Sealants for Buildings", the adhesive is squeezed onto A4 white paper, folded in half, pressed thin, and then unfolded. The uniformity of mixing is judged by visually inspecting the appearance and color.
[0052] The test comparison results are shown in Table 3 below: Table 3 Comparison Results of Butterfly Experiments
[0053] In Embodiment 1 of this invention, the black component B of Comparative Example 1 is split into a white component B1 and a black component B2. The white component B1 and the black component B2 are filled into the main cylinder of a cartridge bottle in an axially alternating manner (e.g., Figure 3 (As shown). When mixing, the uniformity of the mixture can be judged visually by the black and white colors, and it can also be judged by whether white stripes appear in the butterfly experiment. It is applicable to the butterfly experiment.
[0054] In contrast, both component A in the syringe of Comparative Example 1 and component B in the main tube are black adhesives. It is impossible to determine the degree of uniformity of mixing A and B as reflected by the black color after mixing, so it is not applicable to the butterfly experiment.
[0055] 2) Hardness test: In a straight mold slot (10mm wide, 12mm deep, 100cm long, and 120mL in volume) formed by single-sided foam tape, the mixed adhesive material in the cartridge is extruded and continuously filled from one end of the slot to the other, ensuring the adhesive is injected and filled in the slot in the order of extrusion and then smoothed out, forming a "band". The length of the mold slot is divided into 5cm segments, and the entire straight band is divided into 20 segments. The first end of the adhesive injection is marked as 1#, followed by 2#, 3#, and so on, until the other end is marked as 20#. The band is as follows: Figure 6 As shown (not all serial numbers are displayed).
[0056] The bands formed by the adhesive were cured and maintained under the following conditions: 23±2℃ / 50%±5% relative humidity for 168 hours.
[0057] The test results are shown in Table 4 below.
[0058] Table 4. Hardness test results of the adhesives in Example 1 and Comparative Example 1 after curing.
[0059] It can be seen that in Comparative Example 1, the resin hardness values in segments 1, 2, 15, 19, and 20 are lower than the Shore D35 values of resin hardness in other segments, indicating abnormal uncured state. When components A and B are both black, the resulting mixture is also black, making it difficult to visually determine if it is uniformly mixed. Insufficient mixing in certain areas leads to incomplete chemical reaction and curing, resulting in inconsistent hardness after curing.
[0060] After mixing in Example 1, the hardness of the resin at each position of the linear band after curing is Shore D35, indicating that the homogeneity of the mixed material in Example 1 can be judged and verified by visually inspecting the uniformity of the color appearance of the mixture (butterfly test). The mixing uniformity is good, and the performance of the cured material at each position after extrusion in the barrel is consistent.
[0061] Meanwhile, a comparison between Example 1 and Comparative Example 1 shows that the color configuration of the black B component in Example 1 is split into B1 white and B2 black. The filling method of B1 and B2 in the cartridge bottle is very beneficial for identifying the uniformity of the mixing process of the two-component sealant in the cartridge packaging. The final mixing state can achieve effective homogeneous mixing and has better results.
[0062] Comparative Example 2 Comparative Example 2 consists of a two-component polysulfide rubber sealant, both components A and B are black. The formulation is shown in Table 5. Table 5. Ingredient list of two-component polysulfide rubber sealant for Comparative Example 2
[0063] The preparation steps for component A are as follows: Mix the raw materials according to the specified mass ratio, mechanically stir to form a slurry under normal temperature and pressure, then grind and mix twice on a three-roll mill. Afterward, perform centrifugal vacuum degassing treatment on the component A slurry, and then allow it to stand at normal pressure. This yields a homogeneous black manganese dioxide vulcanizing paste of component A.
[0064] The mixing steps for component B are as follows: Using a planetary mixer, the mixture is stirred evenly at room temperature for 30 minutes. After adjusting the negative pressure to -0.09MPa for degassing and degassing for 1 hour, the pressure is restored to normal to obtain component B, which is a black mortar polysulfide rubber component.
[0065] The filling method for Comparative Example 2 is as follows: After homogenization, component A is individually packaged into the syringe of a cartridge bottle. The syringe containing component A is then sealed, the end cap is inserted, and the syringe is installed into the cartridge bottle, which is then screwed clockwise onto the internal agitator of the main bottle.
[0066] Component B is poured into the main body of a 6-ounce (approximately 177 mL) cartridge adhesive bottle. Then, a 0.2 mm thick plastic flat band is used as a guide and also serves as an venting passage. The end cap is inserted into the main body and pushed to expel air and hold the adhesive in place. The plastic flat band is then removed to tighten the end cap, ensuring that the component B adhesive is sealed inside the bottle, resulting in the filled cartridge adhesive.
[0067] Example 2 The two-component polysulfide rubber sealant in Example 2 and Comparative Example 2 has the same component types and total amount. Example 2 keeps component A of Comparative Example 2 unchanged, but the color configuration and filling method are different. The black component B of Comparative Example 2 is split into white component B1 and black component B2. The specific ingredient list is shown in Table 6. Table 6. Ingredient list for two-component polysulfide rubber sealant in Example 2
[0068] The feeding steps for Group A in Example 2 are the same as those in Comparative Example 2.
[0069] The preparation steps for components B1 and B2 in Example 2 are the same as those in Comparative Example 2.
[0070] Example 2: The color-modified adhesive is filled using the following method: After homogenization, component A is individually packaged into the syringe of a cartridge bottle. The syringe containing component A is then sealed at the valve and inserted into a 6-ounce two-component cartridge bottle, which is then screwed clockwise onto the internal agitator of the main bottle.
[0071] The B1 white polysulfide rubber component and the B2 black polysulfide rubber component were prepared according to... Figure 4 The filling positions shown are black and white, each occupying a semicircle. The material is poured into the main barrel of a 6-ounce cartridge bottle. Specifically, two discharge pipes are used, joined by semicircular tubes, for simultaneous extrusion. After filling, a 0.2mm thick plastic strip is used as a guide and also serves as an venting passage. A tail cap is inserted into the main barrel, and air is pushed out to hold the material in place. The plastic strip is then removed, completing the tail cap sealing. This ensures that the B1 light-colored component and the B2 dark-colored component are sealed within the main barrel, resulting in a cartridge adhesive with an improved radial alternating filling method. See [link to documentation]. Figure 2 As shown.
[0072] It should be noted that the loading method for components B1 and B2 can also adopt other forms of radial alternation, such as... Figure 2 As shown, components B1 and B2 are filled into the core and outer periphery of the main cylinder, respectively, creating a "white outside and black inside" filling effect.
[0073] Test Example 2 Following the method in Test Example 1, the cartridge adhesives of Comparative Example 2 and Example 2 were manually stirred, mixed, and extruded, and the butterfly experiment and hardness test were performed with reference to the test method in Test Example 1.
[0074] 1) Visual inspection of mixing uniformity (butterfly test): Table 7 Comparison of butterfly experiments in Example 2 and Comparative Example 2
[0075] In Embodiment 2 of this invention, the black component B is separated into a white component B1 and a black component B2, and then filled radially into the main cylinder of the cartridge glue bottle (e.g., Figure 4 As shown in the figure, when mixing, A is the black component, B1 is the white component, and B2 is the black component. The degree of uniformity of mixing can be visually judged by the mixing of black and white colors. This method is applicable to butterfly experiments.
[0076] In contrast, components A and B of Comparative Example 2 are both black adhesives, making it impossible to determine the uniformity of the black mixture after mixing, and therefore unsuitable for the butterfly experiment.
[0077] 2) Hardness test The test method is the same as in Test Example 1. The specific curing conditions of the rubber compound are as follows: first, cure at 23±2℃ / 50%±5% relative humidity for 48 hours, then cure at 60℃±2℃ for 24 hours, and then return to room temperature for rubber hardness testing.
[0078] The hardness test results are shown in Table 8.
[0079] Table 8 Hardness test of the adhesives after curing in Comparative Example 2 and Example 2
[0080] As shown in Table 8, the hardness values of the cured adhesive in Comparative Example 2 in segments 1, 2, 3, 14, and 20 are lower to varying degrees compared to the hardness of the cured adhesive in other segments. This reflects that the uneven and insufficient mixing of components A and B in Comparative Example 2 led to incomplete chemical reaction and curing.
[0081] In Example 2 of this invention, the hardness of the linear banded cured adhesive was Shore A45, verifying the thorough mixing of components A and B. The most helpful indicator of the uniformity of the adhesive mixture is the visually discernible butterfly test color. Example 2's ability to be adapted for butterfly test identification is due to the improved color configuration and filling method of this invention. Compared to Comparative Example 2, Example 2 separates the original black component B into B1 (white) and B2 (black), which is key to achieving visually discernible mixing uniformity.
[0082] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.
Claims
1. A method of dispensing and loading a two-component sealant color package in a cartridge, characterized by, The cartridge packaging bottle used includes an injection tube and a main tube; the two-component sealant includes a dark-colored component A and a dark-colored component B. After color matching of component B, the two-component sealant is filled in. The color configuration of the B component rubber compound includes the following steps: the total formula of the B component rubber compound remains unchanged, and the different components in the B component rubber compound are physically separated to obtain a light-colored B1 component rubber compound and a dark-colored B2 component rubber compound; wherein, the dark and light colors are defined by the CIE lightness L* value, and an L* value ≥ 70 is considered a light color. The filling of the two-component sealant includes the following steps: filling the injection tube with component A adhesive; filling the main cylinder with component B1 adhesive and component B2 adhesive; wherein component B1 adhesive and component B2 adhesive are filled alternately in the main cylinder.
2. The method of claim 1, wherein, The alternating interval filling includes radial alternating interval filling and axial alternating interval filling.
3. The method of claim 2, wherein, Based on the cross-section of the main cylinder, the radial alternating interval filling is carried out in a fan-shaped alternating pattern with the center of the cross-section of the main cylinder as the center; or, the radial alternating interval filling is carried out alternately from the center outward, divided into a central region and an outer annular region, wherein the outer layer includes one or more layers.
4. The method of claim 2, wherein, The axial alternating filling method includes: filling the middle of the main cylinder with B1 component rubber or B2 component rubber, and filling the two ends with another component; or, the B1 component rubber and B2 component rubber are distributed at equal or unequal intervals.
5. The method of claim 3, wherein, The sector areas formed by the B1 component rubber compound and the B2 component rubber compound are equal, or the sector area formed by one component is 1 to 5 times that formed by the other component.
6. The method of claim 2, wherein, During the axial alternating filling, component B1 and component B2 are filled alternately in chronological order; during the radial alternating filling, component B1 and component B2 are filled simultaneously.
7. The method of claim 1, wherein, The B component rubber compound includes a matrix, a dark component, and a light component; the dark component and the light component are independently fillers or additives; the matrix includes a matrix resin or a matrix rubber; The color configuration of component B rubber compound includes the following steps: The matrix of the B component adhesive is divided into a first matrix and a second matrix; the light-colored component is divided into a first light-colored component and a second light-colored component; the first light-colored component is mixed with the first matrix to obtain a light-colored B1 component; the second light-colored component and the dark-colored component are mixed with the second matrix to obtain a dark-colored B2 component.
8. The method of claim 7, wherein, The volume of the first substrate is 1 to 5 times the volume of the second substrate.
9. The method according to claim 7, characterized in that, The volume of the first light-colored component is 1 to 5 times the volume of the second light-colored component.
10. The method according to claim 1, characterized in that, The A component of the adhesive includes a curing agent and / or other additives; the B component includes a matrix, fillers, and additives.