Washable memory sponge and preparation method thereof

Abstract

The invention discloses washable memory sponge and a preparation method thereof, and relates to the technical field of sponge. According to 100 parts, the polyurethane foaming material is prepared from the following components in parts by weight: 30 to 60 parts of epoxypropane, 45 to 50 parts of polyether polyol, 1.5 to 2.5 parts of foaming agent, 1 to 3 parts of organic silicon and 40 to 60 parts of diisocyanate. The invention relates to a washable memory foam preparation method, which is realized through washable memory foam preparation equipment, and comprises a detection platform and an antibacterial property detector arranged on the detection platform. The sponge can remove dirt and bacteria, and the service life of the memory sponge can be prolonged; and secondly, the antibacterial property detector not only can be used for carrying out antibacterial detection on the sponge at different depths, but also can be used for carrying out antibacterial property detection on the sponge with different shapes and thicknesses, so that the accuracy, high efficiency and applicability of performance detection of the sponge are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sponge detection, and in particular to a washable memory sponge and a preparation method thereof. Background Art

[0002] Washable memory foam is a specially treated memory foam that has good hydrophobicity and mechanical strength. Even after multiple washings, it will not swell or reduce its mechanical strength. This type of memory foam is usually used in occasions that require frequent washing, such as medical mattresses and pillows.

[0003] Washable memory foam has many different properties, and its production and preparation also requires many complex steps to ensure its performance. The preparation of washed memory foam requires mixing, foaming, molding, aging, testing and cutting to finally form the final product. Among them, washed memory foam testing is one of the important steps, and the breathability and antibacterial properties of washed memory foam are one of its important characteristics in the washed memory foam testing.

[0004] For example, a Chinese patent with publication number CN117683198A discloses a washable memory foam and a preparation method thereof, wherein the washable memory foam is made of the following raw materials, namely, polyether polyol, palm oil polymer polyol, tetrahydrofuran-propylene oxide copolyether diol, foaming agent, amine catalyst, stannous octoate, chain extender, and modified isocyanate. Based on 100 points, the contents of the above components are as follows: polyether polyol accounts for 30-60 parts, palm oil polymer polyol accounts for 10-30 parts, tetrahydrofuran and propylene oxide copolyether diol account for 20-40 parts, foaming agent accounts for 1-5 parts, amine catalyst accounts for 0.3-1 parts, stannous octoate accounts for 0.05-0.15 parts, chain extender accounts for 1-4 parts, and modified isocyanate accounts for 30-70 parts. The washable memory sponge has good hydrophobicity and mechanical strength through the selection of materials. Even after repeated washing, the water content of the sponge is small, and it will not swell or reduce its mechanical strength, thereby achieving the purpose of being washable.

[0005] However, the above sponge preparation device still has some shortcomings in actual use:

[0006] 1. First, in the prior art, the washability of washable memory foam is relatively poor, and the best washability is maintained only in the initial stage of foam production. With the long-term use of the memory foam, its performance decays rapidly, which indirectly leads to the gradual impact on its service life.

[0007] 2. Secondly, in the prior art, when testing washable memory sponges, bacteria in bacterial culture medium are usually smeared on the surface of the washable memory sponge to observe the inhibition of bacteria on the sponge surface. However, the washable memory sponge is thicker, and the prior art cannot perform antibacterial testing on different positions inside the sponge. Moreover, the antibacterial properties of the surface and the inside of the washable memory sponge after washing cannot be tested.

[0008] 3. Then, in the prior art, the washable memory sponge needs to be cut into multiple pieces, and the cut sponge needs to be tested for antibacterial properties, which will result in multiple sponge testing steps and complicated testing, thereby affecting the efficiency of sponge testing.

[0009] Therefore, based on the above-stated viewpoints, there is still room for improvement in the existing sponge preparation. Summary of the invention

[0010] In order to solve the above problems, the present invention provides a washable memory foam and a preparation method thereof, which adopts the following technical solutions:

[0011] The first aspect relates to a washable memory foam, comprising the following raw materials in parts by weight: 30-60 parts of propylene oxide, 45-50 parts of polyether polyol, 1.5-2.5 parts of foaming agent, 1-3 parts of silicone and 40-60 parts of isocyanate; the foam is composed of a polyether polyol formed by a polymerization reaction with propylene oxide and a catalyst.

[0012] In a second aspect, it also relates to a method for preparing a washable memory sponge, using a washable memory sponge as described in the claims, and it also relates to a device for preparing a washable memory sponge, which includes a stationary detection platform and an antibacterial property detector respectively arranged on the detection platform;

[0013] The preparation method of washable memory foam is as follows:

[0014] S1, feeding propylene oxide, polyether polyol, foaming agent, organosilicon and diphenylmethane diisocyanate raw materials into a mixing device according to the proportion by metering, and fully stirring and mixing them evenly;

[0015] S2. After mixing, the foaming gas begins to diffuse and expand the tiny bubbles after induction, and the foaming liquid gradually turns white into a "milky" state;

[0016] S3. As the amount of foaming gas increases, the foaming material begins to expand until it becomes a foamy state;

[0017] S4. As the polymerization reaction and foaming reaction proceed, the foaming system changes from a liquid to a highly viscoelastic state until it becomes a solid state;

[0018] S5. After the foam is cured, move the foam body to a constant temperature place for aging treatment to complete all the polymerization reactions inside the foam and form a sponge.

[0019] S6. Subsequently, detect the sponge. Place it on the detection platform, and then perform antibacterial detection on it through an antibacterial detector.

[0020] S7. After the sponge is detected, cut it into different sizes as needed. After further processing and trimming, pack and package it.

[0021] Preferably, the detection platform is provided with a U-shaped vertical bracket for facilitating the positioning of the antibacterial detector. The antibacterial detector includes a detection probe for antibacterial detection of washable memory foam. The inside of the detection probe is a hollow component, and there is a liquid outlet on one side for spraying bacterial growth medium outward. A control component for controlling the liquid outlet time of the bacterial growth medium is provided at one end of the liquid outlet close to the detection probe.

[0022] The U-shaped vertical bracket is also symmetrically installed with electric push rods. The output ends of the electric push rods face downward and are connected to a moving plate. The detection probe is arranged at the bottom of the moving plate.

[0023] Preferably, the control component includes a control window that slides and closes on one side of the liquid outlet. A control compression spring is connected between one side of the control window and the inner wall of the detection probe.

[0024] A pump body for controlling the liquid outlet of the bacterial growth medium is provided on the U-shaped vertical bracket. The pump body transports the bacterial growth medium to the inside of the detection probe through a pipeline, and the bacterial growth medium sprays out through the liquid outlet along the pipeline.

[0025] Preferably, two groups of symmetrically distributed control gear rings are rotatably arranged inside the detection probe. Control opening and closing blocks are equidistantly installed on the inner side wall of the control gear ring. A linkage opening and closing block that is movably in contact with the control opening and closing block is also provided on the control window.

[0026] A control rack that is vertically meshed with the outer side of the control gear ring and is parallel to the height direction of the U-shaped vertical bracket is also provided. One end of the control rack away from the control gear ring slides through the moving plate and is arranged on the U-shaped vertical bracket.

[0027] Preferably, limiting components for antibacterial performance detection of washable memory foam with different shapes are also provided on both sides of the detection probe. The limiting components include guide columns that are symmetrically distributed along the length direction of the moving plate. The guide columns are parallel to the height direction of the U-shaped vertical bracket. A functional plate is installed at the bottom of the guide column. An adsorption plate is arranged at the bottom of the functional plate. Adsorption round holes are equidistantly opened at the bottom of the adsorption plate.

[0028] Preferably, an air suction pump is installed on the U-shaped vertical bracket. The air suction pump is connected to the functional plate through a pipeline. An air suction circular groove for air suction is formed in the functional plate. A sealing column is slidably installed in the air suction circular groove. The bottom of the sealing column is connected to an adsorption plate. A reset compression spring is arranged between the adsorption plate and the functional plate. The reset compression spring is sleeved on the sealing column.

[0029] Preferably, the number of teeth of the control gear ring on one side inside the detection probe is greater than that on the other side, and the number of teeth of the corresponding control rack also corresponds one by one.

[0030] Preferably, adjusting rods and guide rods are symmetrically screwed and installed on both sides in the length direction of the moving plate. The adjusting rods and the guide rods both penetrate downward through the moving plate and are jointly connected with a limit snap ring. And the limit snap ring is slidably sleeved on the detection probe.

[0031] Preferably, clamping electric rods are further arranged on both sides in the length direction of the detection platform. A clamping plate is installed at the output end of the clamping electric rod; A plurality of observation probes are also equidistantly arranged on the detection probe.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] First, the washable memory foam in the present invention is composed of a slow-rebound polyether polyol synthesized from all PO (propylene oxide) and a polyether polyol formed by the reaction of a compound with an active hydrogen group as an initiator, under the action of a catalyst, with propylene oxide and cyclic polymerization reaction. It has high washable performance, and with the use of the washable memory foam, the stability of its performance can be guaranteed, indirectly improving the service life of the washable memory foam.

[0034] Second, the antibacterial property detector in the present invention can detect the antibacterial property of the washable memory foam by plugging, and cannot perform cutting operations on the washable memory foam, greatly improving the detection efficiency during the production of the washable memory foam, thereby indirectly improving the production efficiency of the washable memory foam.

[0035] Third, the present invention can not only detect the antibacterial property of the washable memory foam, but also detect the antibacterial property of the washable memory foam at different depths, ensuring the accuracy and efficiency of the performance detection of the washable memory foam, ensuring that all parts of the washable memory foam can maintain the best performance, and avoiding the problem of large performance differences in different parts of the washable memory foam.

[0036] 4. The present invention can also perform antibacterial testing on washable memory sponges of different shapes, because the shapes of washable memory sponges are different during the production process, and the prior art has poor stability and detection accuracy when performing antibacterial testing on washable memory sponges of different shapes. The present invention can limit the position of washable memory sponges of different shapes, and during the testing process, can ensure their stability, thereby avoiding deformation of the washable memory sponge when the detection probe is plugged in for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0039] Figure 2 It is a structural schematic diagram of the antibacterial property detector of the present invention.

[0040] Figure 3 It is a schematic diagram of the structure of the detection probe of the present invention from the first perspective.

[0041] Figure 4 It is a schematic diagram of the structure of the detection probe of the present invention from a second viewing angle.

[0042] Figure 5 It is a schematic diagram of the structure of the detection probe of the present invention from a third viewing angle.

[0043] Figure 6 The present invention Figure 5 A partial enlarged view of point B in FIG.

[0044] Figure 7 It is a structural schematic diagram of the control component of the present invention.

[0045] Figure 8 It is an enlarged structural diagram of the control component of the present invention.

[0046] Fig. 9 It is a schematic structural diagram of the support member of the present invention from a first viewing angle.

[0047] Fig.10 It is a schematic structural diagram of the support member of the present invention from a second viewing angle.

[0048] Fig.11 It is a schematic structural diagram of the limiting component of the present invention from a first viewing angle.

[0049] Fig.12 It is a schematic structural diagram of the limiting component of the present invention from a second viewing angle.

[0050] Fig.13 The present invention is a flow chart of a method for preparing a washable memory foam.

[0051] Description of附图标记说明:

[0052] A, washable memory foam; 1, detection platform; 2, antibacterial detector; 20, C-shaped vertical bracket; 21, detection probe; 22, liquid outlet; 23, control component; 24, electric push rod; 25, moving plate; 230, control window; 231, control compression spring; 232, pump body; 233, control gear ring; 234, control opening and closing block; 235, linkage opening and closing block; 236, control rack; 3, limiting component; 30, guiding column; 31, functional plate; 32, adsorption plate; 33, adsorption round hole; 34, suction pump; 35, suction round groove; 36, sealing column; 37, reset compression spring; 4, support component; 40, support sheet; 41, centering rocker; 42, linkage convex block; 43, linkage rod; 44, linkage compression spring; 45, control round hole; 250, adjusting rod; 251, guiding rod; 252, limiting snap ring; 5, clamping electric rod; 6, clamping plate; 7, observation probe. 具体实施方式

[0053] 以下结合附 Figure 1-Figure 13 对本申请作进一步详细说明。

[0054] This application example discloses a washable memory foam and its preparation method. First, a washable memory foam is disclosed. It can be directly put into water for cleaning without using any cleaning agent, which is very convenient and fast. Moreover, the washable memory foam can effectively remove odors caused by sweat, dust, etc. Further, regular cleaning of the memory foam can remove dirt and bacteria, which helps to extend the service life of the memory foam.

[0055] Secondly, it also relates to a preparation method of the washable memory foam, which can realize the preparation of the washable memory foam A in this application, ensure that the washable memory foam A in this application is prepared quickly and efficiently according to the specified steps, and greatly improves the yield rate and production efficiency of the washable memory foam A.

[0056] In the preparation process, it also involves a special preparation device for the washable memory foam A, which can detect the performance of the washable memory foam A. When the washable memory foam A is produced, its performance can be detected in time to ensure the quality of the washable memory foam A.

[0057] Example 1: This application relates to a washable memory foam, which is specifically as follows.

[0058] A washable memory foam, the washable memory foam A is made of the following raw materials, namely propylene oxide, polyether polyol, foaming agent, silicone, and diphenylmethane diisocyanate.

[0059] Based on 100 parts, the contents of the above components are: 30 parts of propylene oxide, 45 parts of polyether polyol, 1.50 parts of foaming agent, 1 part of silicone, and 40 parts of diphenylmethane diisocyanate; the polyether polyol is combined with propylene oxide and cyclopolymerization under the action of a catalyst.

[0060] The washable memory foam A in the present application is a slow-rebound polyether polyol synthesized from all PO (propylene oxide), which can slowly rebound after being compressed by an external force, so as to return to its original state.

[0061] Its slow-rebound material can adapt to the pressure and shape of the body, providing more even support, reducing body pressure, and thus providing a more comfortable sleeping experience.

[0062] The slow rebound sponge can also effectively relieve body stress and fatigue, relieve pressure on muscles and joints, help the body relax, and thus promote deeper sleep.

[0063] A slow-rebound sponge pillow or mattress can provide better support and comfort, help the body maintain a correct sleeping posture, reduce the number of tossing and turning, and improve sleep quality.

[0064] The slow-rebound material usually has good elasticity and durability, can maintain its original shape and performance for a long time, is not easy to deform or collapse, and has a long service life.

[0065] The present application also proposes a method for preparing a washable memory foam, which can ensure the preparation of the washable memory foam A in an orderly and quick manner, ensure the yield rate of the washable memory foam A, and ensure the stability of its quality.

[0066] See also Fig.13 The invention relates to a method for preparing a washable memory foam, as shown below:

[0067] S1. Mixing ingredients: The raw materials of propylene oxide, polyether polyol, foaming agent, silicone and diphenylmethane diisocyanate are metered (by metering pump or manual weighing) in proportion into a mixing device, and fully stirred to mix evenly; tiny bubbles will be generated in the liquid during mixing, and these evenly dispersed tiny bubbles are the nucleation centers in the foam formation process. In the low-pressure foaming machine, a small amount of air needs to be injected into the mixing head to ensure that there are enough bubble nucleation centers.

[0068] S2. Emulsification: After mixing, after a short period of induction, the foaming gas (such as carbon dioxide, dichloromethane) begins to diffuse and expand the tiny bubbles, and the foaming liquid gradually turns white into a "milky" state; the period from the beginning of mixing to emulsification is called the "milky period" or "milky time", and the milky period of soft foam is 12s.

[0069] S3. Rising: At the same time, as the polymerization reaction proceeds, the liquid phase viscosity continues to rise; during the foaming process, the total number of bubbles remains unchanged; when the system is fully foamed, the bubble wall cannot withstand the gas pressure and ruptures, and the gas escapes from the pores, making the foam an open-cell structure. At this time, the foam has fully gelled and has a certain strength, enough to maintain the foam state; when the foam block is produced, it can be observed that the height of the foam block sinks slightly; usually the period from material mixing to complete rising (with bubble bursting as an indicator) is called "rising time" or "rising time"; for continuous foaming, the rising time is 130s, and for box-type foaming it is 120s.

[0070] S4. Gel: As the polymerization reaction and foaming reaction proceed, the foaming system changes from liquid to high-viscoelastic state, and gradually loses fluidity and becomes solid. This process is called gel. The time required from material mixing to the foam plastic reaching gel strength is called "gel time", which is generally 70s after the "rise time", but the rise time of some hot and cold foams may be longer than the gel time. To check whether the foam is gelled, a wooden stick can be inserted into the foam 3cm deep until a certain resistance is felt, which means that the foam has gelled; if the foam surface is no longer sticky when gently touched, it means that the "non-stick time" has arrived.

[0071] S5. Ripening: After the foam gels, move the foam into a place with a certain ambient temperature for aging to complete the polymerization reaction inside the foam. The aging temperature and time depend on the type of foam. Block foam generally needs to be aged for more than 24 hours.

[0072] S6. As the foam is fully matured, it is then necessary to test the foam by placing it on the testing platform 1 and then performing an antibacterial test on it using the antibacterial tester 2. If an inhibition zone appears during the test, it indicates that the foam has strong antibacterial properties.

[0073] S7. After the sponge has been inspected, it is cut into different sizes as needed, and after further processing and trimming (such as grinding and edging), it is packaged.

[0074] The present application also proposes a preparation device for testing the washable memory sponge A in Example 1 involved in the preparation method of the washable memory sponge, as shown below.

[0075] The invention also relates to a device for preparing a washable memory foam, which comprises a stationary detection platform 1 and an antibacterial property detector 2 respectively arranged on the detection platform 1.

[0076] The antibacterial detector 2 is mainly used to detect the interior of the washable memory foam A, and the antibacterial detector 2 can penetrate into the washable memory foam A to detect the antibacterial properties of different depth regions of the washable memory foam A, thereby greatly improving the comprehensiveness of the detection of the washable memory foam A. As a result, the accuracy of the antibacterial detection results of the washable memory foam A can be greatly improved. At the same time, multiple sets of detection experiments can be carried out to form multiple control groups, providing favorable analysis data for the antibacterial performance of the washable memory foam A.

[0077] Look again Figure 1 As shown, clamping electric rods 5 are also arranged on both sides in the length direction of the detection platform 1, and clamping plates 6 are installed at the output ends of the clamping electric rods 5.

[0078] After the washable memory foam A is cured, several samples of the washable memory foam A are randomly selected from its interior, and then placed on the detection platform 1, and the washable memory foam A is located directly below the U-shaped vertical bracket 20. Then, the clamping electric rod 5 is started, and the output end of the clamping electric rod 5 controls the clamping plate 6 to move towards the washable memory foam A until the clamping plate 6 contacts both sides of the washable memory foam A to limit the position of the washable memory foam A.

[0079] After the washable memory foam A is restricted on the detection platform 1, the antibacterial detector 2 is started to perform antibacterial detection on the washable memory foam A, as follows:

[0080] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, it is a schematic structural diagram of the antibacterial detector 2 in this application; a U-shaped vertical bracket 20 for facilitating the positioning of the antibacterial detector 2 is provided on the detection platform 1. The antibacterial detector 2 includes a detection probe 21 for performing antibacterial detection on the washable memory foam A. The interior of the detection probe 21 is a hollow component, and a liquid outlet 22 for spraying bacterial propagation liquid outward is provided on one side thereof. A control component 23 for controlling the liquid outlet time of the bacterial propagation liquid is provided near one end of the liquid outlet 22 close to the detection probe 21.

[0081] Electric push rods 24 are symmetrically installed on the U-shaped vertical bracket 20, the output ends of the electric push rods 24 face downward, and are connected to a moving plate 25. The detection probe 21 is arranged at the bottom of the moving plate 25.

[0082] It should be noted that the bottom of the detection probe 21 is a conical structure, the purpose of which is to facilitate breaking through the washable memory foam A, drilling holes in the washable memory foam, and then inserting it into the interior of the washable memory foam A.

[0083] The bacterial propagation liquid is a known existing culture medium, and after it is sprayed onto the washable memory foam A, it can reproduce itself within a certain period of time.

[0084] In the specific implementation process, the electric push rod 24 is started. The electric push rod 24 controls the detection probe 21 to move towards the direction of the washable memory foam A through the moving plate 25 until the detection probe 21 is inserted into the interior of the washable memory foam A. Then, under the control of the control component 23, the detection probe 21 is positioned at a specified location, and the bacterial propagation liquid filled inside it is sprayed onto a specified location inside the washable memory foam A. And as the detection probe 21 continuously penetrates into the washable memory foam A, the detection probe 21 can spray the bacterial propagation liquid at equal intervals. After the bacterial propagation liquid is sprayed into the interior of the washable memory foam A, it is absorbed by the washable memory foam A, and the bacterial propagation liquid adheres to the inner wall of the washable memory foam A where holes are drilled.

[0085] When the detection probe 21 sprays the bacterial propagation liquid, it can spray at equal intervals, and the control component 23 can effectively control the amount of the bacterial propagation liquid sprayed, as specifically shown below.

[0086] Refer to Figure 4 、 Figure 5 and Figure 6 As shown in

[0087] A control window 230 that slides and closes is provided on the C-shaped vertical bracket 20 on one side of the liquid outlet 22. A control compression spring 231 is connected between one side of the control window 230 and the inner wall of the detection probe 21.

[0088] When it is necessary to perform antibacterial property detection on the washable memory foam A, the operator connects the pipeline of the pump body 232 to the detection probe 21, and then the pump body 232 transports the bacterial propagation liquid into the interior of the detection probe 21. At the same time, the control window 230 inside the detection probe 21 is in a closed state in the initial state, and the control window 230 blocks and isolates the liquid outlet 22 of the detection probe 21 to prevent accidental leakage of the bacterial propagation liquid inside the detection probe 21.

[0089] The control compression spring 231 squeezes the control window 230, so that the control window 230 always abuts against the liquid outlet 22 of the detection probe 21 in the initial state.

[0090] Refer to Figure 6 、 Figure 7 and Figure 8As shown, it is a schematic structural diagram of the structure for controlling the opening and closing of the control window 230 in the present application; specifically, two sets of symmetrically distributed control gear rings 233 are rotatably arranged inside the detection probe 21. Control opening and closing blocks 234 are equidistantly installed on the inner side wall of the control gear ring 233. A linkage opening and closing block 235 that is movably in contact with the control opening and closing block 234 is also provided on the control window 230.

[0091] On the outer side of the control gear ring 233, a control rack 236 that is vertically meshed and parallel to the height direction of the U-shaped vertical bracket 20 is also provided. One end of the control rack 236 away from the control gear ring 233 slidably penetrates through the moving plate 25 and is arranged on the U-shaped vertical bracket 20.

[0092] In the initial state, the detection probe 21 is located directly above the washable memory sponge A. When the electric push rod 24 pushes the detection probe 21 downward, the detection probe 21 moves downward. However, the control rack 236 inside the detection probe 21 is arranged on the U-shaped vertical bracket 20. Therefore, the control rack 236 is fixed and cannot move. At this time, the control gear ring 233 that meshes with the control rack 236 moves downward synchronously with the detection probe 21. Therefore, the control gear ring 233 is driven to rotate. As the control gear ring 233 rotates, the control opening and closing block 234 inside the control gear ring 233 will contact the linkage opening and closing block 235 on the control window 230. As the control opening and closing block 234 squeezes the linkage opening and closing block 235, the linkage opening and closing block 235 will drive the control window 230 to move synchronously in the direction away from the linkage opening and closing block 235. At this time, the liquid outlet 22 covered by the control window 230 is exposed, and the liquid outlet 22 starts to continuously spray the bacterial growth liquid outward, ensuring that the bacterial growth liquid can adhere to the washable memory sponge A.

[0093] Refer to Fig. 9 and Fig.10 As shown, it is a schematic structural diagram of the structure for supporting the sponge in the present application. The above-mentioned liquid outlet 22 can continuously spray the bacterial growth liquid outward, so that the bacterial growth liquid adheres to the washable memory sponge A. However, it should be noted that when the detection probe 21 is inserted into the inside of the washable memory sponge A, the washable memory sponge A will wrap around the outer surface of the detection probe 21. At this time, when the liquid outlet 22 of the detection probe 21 sprays the bacterial growth liquid outward, the area of the bacterial growth liquid covering the inner wall of the washable memory sponge A will be relatively small.

[0094] At the same time, the washable memory sponge A wraps around the outer surface of the detection probe 21. After the bacterial growth liquid is sprayed outward, part of the bacterial growth liquid will rebound and remain on the inner wall of the liquid outlet 22, resulting in the surface of the washable memory sponge A being unable to adsorb a fixed amount of the bacterial growth liquid, thus affecting the detection of the antibacterial performance of the washable memory sponge A.

[0095] Therefore, the present application proposes a support member 4, through which the washable memory sponge A wrapped by the liquid outlet 22 of the detection probe 21 can be supported, so that a certain distance is pulled between the liquid outlet 22 of the detection probe 21 and the inner wall of the washable memory sponge A. At this time, after the liquid outlet 22 of the detection probe 21 sprays the bacterial growth fluid outward, the bacterial growth fluid can be evenly spread outward in the form of mist on the inner wall of the stretched washable memory sponge A, ensuring that the bacterial growth fluid can stably grow on the inner wall of the washable memory sponge A.

[0096] Look again Figure 8 , Fig. 9 and Fig.10 As shown, the control gear ring 233 is also provided with a support member 4 for supporting the area of ​​the sponge where the bacterial growth fluid is sprayed after the detection probe 21 is inserted into the sponge, thereby ensuring that the bacterial growth fluid is evenly spread on the inner wall of the sponge at different depths. The support member 4 includes two support sheets 40 that are fitted onto the surface of the detection probe 21, and a center rocker 41 is hinged on one side of the support sheet 40.

[0097] Linkage protrusions 42 are installed at equal intervals on the side wall of the control gear ring 233, and a linkage rod 43 is abutted on the linkage protrusion 42. The linkage rod 43 is horizontally slidably installed inside the detection probe 21, and the end of the linkage rod 43 away from the linkage protrusion 42 abuts against the side of the center rocker 41 away from the support plate 40, and a linkage compression spring 44 is connected between the side of the center rocker 41 close to the linkage rod 43 and the detection probe 21.

[0098] When the control gear ring 233 rotates, the linkage protrusion 42 on the control gear ring 233 rotates synchronously, and the linkage protrusion 42 is squeezed by the linkage rod 43 on the side wall, and the linkage rod 43 squeezes one side of the center rocker 41. After one side of the center rocker 41 is squeezed, the other side of the center rocker 41 squeezes the support sheet 40. After the support sheet 40 is squeezed, it squeezes the inner wall of the washable memory sponge A after being drilled outward along the liquid outlet 22 of the detection probe 21, ensuring that there is a certain distance between the washable memory sponge A and the liquid outlet 22 of the detection probe 21, so that the bacterial breeding liquid is evenly spread outward in the form of mist on the inner wall of the stretched washable memory sponge A, ensuring that the bacterial breeding liquid can stably breed on the inner wall of the washable memory sponge A.

[0099] See also Fig.11 As shown, a number of observation probes 7 are also arranged at equal intervals on the detection probe 21. After the bacterial breeding fluid breeds on the inner wall of the washable memory sponge A, the observation probe 7 moves to a designated position. The antibacterial condition on the inner wall of the washable memory sponge A can be quickly observed through the observation probe 7. If an antibacterial circle appears, it means that the antibacterial property of the washable memory sponge A is strong; otherwise, it is weak.

[0100] Looking back Figure 8 and Fig. 9 As shown, it is a schematic structural diagram of the detection probe 21 in the present application when it penetrates into the water-washable memory sponge A to a certain distance; the number of teeth of the control gear ring 233 on one side inside the detection probe 21 is greater than that of the control gear ring 233 on the other side, and the number of teeth of the corresponding control rack 236 also corresponds one by one.

[0101] In the detection probe 21 of the present application, two groups of control gear rings 233 are provided. The number of teeth of the two control gear rings 233 is different, and the number of teeth of the control gear ring 233 on one side is twice that of the control gear ring 233 on the other side. When it comes to some water-washable memory sponges A with a relatively thin thickness, the control rack 236 corresponding to the control gear ring 233 with fewer teeth can be connected to the C-shaped vertical bracket 20. At this time, the control gear ring 233 with fewer teeth can rotate, and the spacing of each injection of the bacterial propagation liquid is relatively small. On the contrary, when using the control gear ring 233 with more teeth, its rotation speed is relatively slow, so the spacing of each injection of the bacterial propagation liquid is relatively large, and it can be applied to the antibacterial detection of some water-washable memory sponges A with a relatively thick size.

[0102] It should be noted that two control racks 236 are respectively meshed with the two control gear rings 233, and the ends of the two control racks 236 away from the control gear rings 233 can be actively connected to the C-shaped vertical bracket 20. The ends of the control racks 236 close to the C-shaped vertical bracket 20 can be disconnected and connected, and can be manually controlled.

[0103] However, it should be noted that when the control rack 236 with fewer teeth is manually clamped to the C-shaped vertical bracket 20, it is fixed and cannot move. When the detection probe 21 moves downward, the control gear ring 233 with fewer teeth can be controlled to rotate. In this way, it can not only ensure that the spacing of each equal-spacing injection of the bacterial propagation liquid becomes smaller, but also ensure its antibacterial detection of some water-washable memory sponges A with a relatively thin thickness.

[0104] When the control rack 236 with a dense number of teeth is manually actively connected to the C-shaped vertical bracket 20 and the detection probe 21 moves downward, the control gear ring 233 with a dense number of teeth rotates. In this way, it can ensure that the spacing of each equal-spacing injection of the bacterial propagation liquid becomes larger, and it can ensure its antibacterial detection of some water-washable memory sponges A with a relatively thick thickness.

[0105] Looking back Figure 3As shown in the figure, it is a schematic structural diagram of preventing the detection probe 21 from penetrating the washable memory foam A in this application, resulting in the bottom of the washable memory foam A coming into contact with the detection platform 1 and causing damage; on both sides of the moving plate 25 in the length direction, an adjusting rod 250 and a guiding rod 251 are symmetrically screwed and installed. The adjusting rod 250 and the guiding rod 251 both penetrate downward through the moving plate 25 and are jointly connected with a limiting snap ring 252, and the limiting snap ring 252 is slidably sleeved on the detection probe 21.

[0106] When the detection probe 21 is working, first rotate the adjusting rod 250, control the position of the limiting snap ring 252 through the adjusting rod 250, so that the distance between the bottom of the limiting snap ring 252 and the bottom of the detection probe 21 is less than the thickness of the washable memory foam A to be detected. The purpose is to prevent the bottom of the detection probe 21 from penetrating the washable memory foam A and causing it to come into contact with the detection platform 1 and be damaged.

[0107] In order to further ensure the accuracy of the antibacterial detection of the washable memory foam A and improve the detection efficiency, this application also proposes a limiting component 3. When the detection probe 21 is inserted into the washable memory foam A, because the material of the washable memory foam A is relatively soft, a depression will appear at the contact part between the washable memory foam A and the detection probe 21, resulting in the detection probe 21 being unable to penetrate the washable memory foam A. Therefore, this application proposes a limiting component 3, which can shape the washable memory foam A through the limiting component 3 to ensure the stability of the washable memory foam A.

[0108] Refer to Fig.11 and Fig.12 As shown in the figure, limiting components 3 for detecting the antibacterial performance of washable memory foams A with different shapes are also provided on both sides of the detection probe 21. The limiting component 3 includes guiding columns 30 symmetrically distributed along the length direction of the moving plate 25. The guiding columns 30 are parallel to the height direction of the U-shaped vertical bracket 20. A functional plate 31 is installed at the bottom of the guiding column 30. An adsorption plate 32 is arranged at the bottom of the functional plate 31, and adsorption round holes 33 are equally spaced at the bottom of the adsorption plate 32.

[0109] An air suction pump 34 is installed on the U-shaped vertical bracket 20. The air suction pump 34 is connected to the functional plate 31 through a pipeline. An air suction circular groove 35 for air suction is opened in the functional plate 31. A sealing column 36 is slidably installed in the air suction circular groove 35. The bottom of the sealing column 36 is connected to the adsorption plate 32, and a return compression spring 37 is arranged between the adsorption plate 32 and the functional plate 31. The return compression spring 37 is sleeved on the sealing column 36.

[0110] During the specific implementation process, when the detection probe 21 moves toward the direction of the washable memory sponge A, the adsorption plates 32 on both sides of the detection probe 21 first contact the upper surface of the washable memory sponge A, and then the adsorption plates 32 are squeezed and approach the direction of the functional plate 31 until the adsorption plates 32 and the functional plate 31 contact each other, and then the sealing column 36 in the suction groove 35 of the functional plate 31 is pushed open, so that the suction groove 35 of the functional plate 31 is opened, and then the suction pump 34 is started, and the suction pump 34 adsorbs the washable memory sponge A through the suction groove 35 and the adsorption hole 33 of the adsorption plate 32, thereby ensuring that the washable memory sponge A is adsorbed and fixed by the adsorption plate 32 in the drilling area of ​​the detection probe 21, thereby avoiding the collapse of the washable memory sponge A when the detection probe 21 is drilling.

[0111] During operation: First, when the washable memory sponge A is fully matured, a number of washable memory sponges A are randomly sampled from the inside, and then placed on the detection platform 1, and the two sides of the washable memory sponge A are contacted by the clamping plate 6 to limit the position of the washable memory sponge A.

[0112] Step 2: After the washable memory sponge A is confined on the detection platform 1, the movable plate 25 moves downward. At this time, the adsorption plate 32 abuts against the surface of the washable memory sponge A and adsorbs it, thereby improving the stability of the washable memory sponge A and preventing the washable memory sponge A from collapsing after being squeezed by external force.

[0113] Step 3: Then the electric push rod 24 controls the detection probe 21 to move toward the washable memory sponge A through the moving plate 25 until the detection probe 21 is inserted into the interior of the washable memory sponge A. Then, under the control of the control component 23, the detection probe 21 is at a specified position, and the bacterial growth fluid filled inside is sprayed to the specified position inside the washable memory sponge A. As the detection probe 21 continues to penetrate into the washable memory sponge A, the detection probe 21 can spray the bacterial growth fluid at equal intervals. After the bacterial growth fluid is sprayed into the interior of the washable memory sponge A, it is absorbed by the washable memory sponge A, and the bacterial growth fluid adheres to the inner wall of the washable memory sponge A where the hole is drilled.

[0114] Step 4: After the bacterial growth fluid reacts on the inner wall of the washable memory sponge A with holes drilled therein for a certain period of time, a certain antibacterial zone will be produced on its surface. If an antibacterial zone is observed, it means that the antibacterial property of the washable memory sponge A is relatively strong. If no antibacterial zone is observed, it means that the antibacterial property of the washable memory sponge A is relatively weak.

[0115] Embodiment 2

[0116] The difference from the first embodiment is that the ratio of the washable memory foam is different:

[0117] Based on 100 parts, the contents of the above components are: 50 parts of propylene oxide, 47 parts of polyether polyol, 2 parts of foaming agent, 2 parts of silicone, and 50 parts of diphenylmethane diisocyanate; the polyether polyol is combined with propylene oxide and cyclopolymerization under the action of a catalyst.

[0118] Embodiment 3

[0119] The difference from the first embodiment is that the ratio of the washable memory foam is different:

[0120] Based on 100 parts, the contents of the above components are: 60 parts of propylene oxide, 50 parts of polyether polyol, 2.5 parts of foaming agent, 3 parts of silicone, and 60 parts of diphenylmethane diisocyanate; the polyether polyol is combined with propylene oxide and cyclopolymerization under the action of a catalyst.

[0121] Inspection and Testing

[0122] Washing test:

[0123] Prepare 5 pieces of the above-mentioned washable memory foam, cut them into 50*30*10CM squares, wash them for 15 minutes and dry them at 70°C for 2 hours. One washing and drying is counted as one washing. Record the physical performance data of the memory foam after no washing, 10 washings, 20 washings, 30 washings and 40 washings.

[0124] Table 1 Physical performance data of washable memory foam after different washing times in Example 1

[0125] Unwashed Wash 10 times Wash 20 times Wash 30 times Wash 40 times weight 734 721 703 683 649 Dimensions 50*30*10 50*30*10 50*30*10 50*30*10 50*30*10 Hardness 40% (N) 44.7 44.1 43.5 43.1 42.5 Tensile strength Kpa 87.3 87.8 93.2 90.5 88.8 Tear strength N / m 1.5 1.5 1.5 1.4 1.5 Elongation % 167.8 178.5 177.3 177.5 183.7

[0126] Table 2 Physical performance data of washable memory foam after different washing times in Example 2

[0127] Unwashed Wash 10 times Wash 20 times Wash 30 times Wash 40 times weight 733 728 715 703 679 Dimensions 50*30*10 50*30*10 50*30*10 50*30*10 50*30*10 Hardness 40% (N) 43.5 43.1 42.7 43.1 42.8 Tensile strength Kpa 87.8 87.5 91.2 90.3 86.8 Tear strength N / m 1.4 1.5 1.5 1.4 1.3 Elongation % 168.8 172.5 175.3 176.5 181.7

[0128] Table 3 Physical performance data of washable memory foam after different washing times in Example 3

[0129] Unwashed Wash 10 times Wash 20 times Wash 30 times Wash 40 times weight 734 721 703 683 649 Dimensions 50*30*10 50*30*10 50*30*10 50*30*10 50*30*10 Hardness 40% (N) 44.2 43.7 43.5 42.1 44.5 Tensile strength Kpa 86.3 88.3 95.2 89.4 88.5 Tear strength N / m 1.5 1.4 1.5 1.4 1.3 Elongation % 165.8 173.5 171.3 176.5 181.7

[0130] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A washable memory foam, characterized in that: It includes raw materials in the following parts by mass: 30 - 60 parts of propylene oxide, 45 - 50 parts of polyether polyol, 1.5 - 2.5 parts of foaming agent, 1 - 3 parts of silicone, and 40 - 60 parts of isocyanate; it is combined with polyether polyol formed by the ring polymerization reaction of propylene oxide under the action of a catalyst.

2. A method for preparing a washable memory foam, using the washable memory foam described in claim 1, characterized in that: It also relates to a preparation device for washable memory foam, which includes a static detection platform (1) and an antibacterial detector (2) respectively arranged on the detection platform (1); Among them, the preparation method of washable memory foam is as follows: S1. Input raw materials such as propylene oxide, polyether polyol, foaming agent, silicone, and diphenylmethane diisocyanate into a mixing device according to the proportion through metering, and stir them充分 to make them evenly mixed; S2. After mixing, through induction, the foaming gas begins to diffuse and expand small bubbles, and the foaming liquid gradually turns white into a "milk" shape; S3. As the foaming gas increases, the foaming material begins to expand until it presents a foam state; S4. As the polymerization reaction and foaming reaction proceed, the foaming system changes from a liquid state to a highly viscoelastic state until it becomes a solid state; S5. After the foam is cured, move the foam body to a constant temperature place for aging treatment to complete all the polymerization reactions inside the foam and form a sponge; S6. Then, detect the sponge, place it on the detection platform (1), and then perform antibacterial detection on it through the antibacterial detector (2); S7. After the sponge is detected, cut it into different sizes as needed, and after further processing and trimming, pack and package it.

3. The method for preparing a washable memory foam according to claim 2, characterized in that: The detection platform (1) is provided with a U-shaped vertical bracket (20) for facilitating the positioning of the antibacterial detector (2). The antibacterial detector (2) includes a detection probe (21) for antibacterial detection of washable memory foam. The inside of the detection probe (21) is a hollow component, and there is a liquid outlet (22) for spraying bacterial propagation liquid向外 on one side. The liquid outlet (22) is provided with a control component (23) for controlling the liquid outlet time of the bacterial propagation liquid near one end of the detection probe (21); The U-shaped vertical bracket (20) is also symmetrically installed with electric push rods (24). The output ends of the electric push rods (24) face downward and are connected to a moving plate (25). The detection probe (21) is arranged at the bottom of the moving plate (25).

4. The method for preparing a washable memory foam according to claim 3, characterized in that: The control component (23) includes a control window (230) that slides and closes on one side of the liquid outlet (22). A control compression spring (231) is connected between one side of the control window (230) and the inner wall of the detection probe (21); The U-shaped vertical bracket (20) is provided with a pump body (232) for controlling the liquid outlet of the bacterial propagation liquid. The pump body (232) transports the bacterial propagation liquid to the inside of the detection probe (21) through a pipeline, and the bacterial propagation liquid sprays out through the liquid outlet (22) along the pipeline.

5. The method for preparing a washable memory foam according to claim 4, characterized in that: Inside the detection probe (21), there are also two sets of symmetrically distributed control gear rings (233) rotatably arranged. On the inner side wall of the control gear ring (233), control opening and closing blocks (234) are equidistantly installed. On the control window (230), there is also a linkage opening and closing block (235) that movably abuts against the control opening and closing block (234). On the outside of the control gear ring (233), there is also a control rack (236) vertically meshed with it and parallel to the height direction of the C-shaped vertical bracket (20). One end of the control rack (236) away from the control gear ring (233) slidably penetrates through the moving plate (25) and is arranged on the C-shaped vertical bracket (20).

6. The method for preparing a washable memory foam according to claim 3, characterized in that: On both sides of the detection probe (21), there are also limit components (3) for detecting the antibacterial performance of washable memory sponges with different shapes. The limit components (3) include guide columns (30) symmetrically distributed along the length direction of the moving plate (25). The guide columns (30) are parallel to the height direction of the C-shaped vertical bracket (20). At the bottom of the guide column (30), a functional plate (31) is installed. At the bottom of the functional plate (31), an adsorption plate (32) is arranged. At the bottom of the adsorption plate (32), adsorption round holes (33) are equidistantly opened.

7. The method for preparing a washable memory foam according to claim 6, characterized in that: An air suction pump (34) is installed on the C-shaped vertical bracket (20). The air suction pump (34) is connected to the functional plate (31) through a pipeline. An air suction round groove (35) for air suction is opened in the functional plate (31). A sealing column (36) is slidably installed in the air suction round groove (35). The bottom of the sealing column (36) is connected to the adsorption plate (32). And a reset compression spring (37) is arranged between the adsorption plate (32) and the functional plate (31). The reset compression spring (37) is sleeved on the sealing column (36).

8. The method for preparing a washable memory foam according to claim 5, characterized in that: The number of teeth of the control gear ring (233) on one side inside the detection probe (21) is greater than that of the control gear ring (233) on the other side, and the number of teeth of the corresponding control rack (236) also corresponds one by one.

9. The method for preparing a washable memory foam according to claim 3, characterized in that: On both sides of the moving plate (25) symmetrically in the length direction, an adjusting rod (250) and a guide rod (251) are screwed and installed. The adjusting rod (250) and the guide rod (251) both penetrate through the moving plate (25) downward and are jointly connected with a limit clamping ring (252). And the limit clamping ring (252) slidably penetrates through the detection probe (21).

10. The method for preparing a washable memory foam according to claim 3, characterized in that: On both sides of the detection platform (1) in the length direction, there are also clamping electric rods (5). The output end of the clamping electric rod (5) is installed with a clamping plate (6). On the detection probe (21), a number of observation probes (7) are also equidistantly arranged.

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