Double-layer silica gel massager preparation process and product thereof

Abstract

The invention relates to the technical field of double-layer silica gel massager processing, in particular to a double-layer silica gel massager preparation process and a double-layer silica gel massager product, and the double-layer silica gel massager preparation process comprises the following preparation steps: S1, mixing polydimethylvinylsiloxane, acrylic resin, white carbon black, filler and a vulcanizing agent to obtain a mixture A; s2, injecting the mixture A into a mold, vulcanizing, and opening the mold to obtain a container for placing the massage part; s3, a massage part is installed in a container where the massage part is placed, then the container is placed in a mold, the mixture A is injected into the mold, vulcanization and mold opening are conducted, and a sealed massage head inner container is obtained; s4, mixing polydimethylmethylvinylsiloxane, polymethylhydrosiloxane, acrylic resin, white carbon black, mica powder, cellulose crystal and a vulcanizing agent to obtain a mixture B; s5, the sealed massage head inner container is placed in a mold, then the mixture B is injected into the mold, vulcanization and mold opening are conducted, and the double-layer silica gel massager is obtained.

Description

Technical Field

[0001] The present application relates to the technical field of double-layer silicone massager processing, and more specifically, to a double-layer silicone massager preparation process and its product. Background Art

[0002] The massage head in the massager relaxes tense muscles, relieves muscle fatigue, and restores muscle elasticity and vitality by simulating the movements of human hand massage, such as kneading, tapping, and vibration. The massage head is mainly made of stainless steel, EVA, ABS, and silicone, and different materials can be selected according to different needs.

[0003] Among them, the silicone massage head is soft and can simulate the techniques of professional masseurs to provide a comfortable massage experience. However, during use, it was found that although the silicone material is soft and comfortable, its wear resistance is weaker than other hard materials. After long-term use or high-intensity massage, the silicone massager will wear or age, which will affect its service life and massage effect. Summary of the invention

[0004] In order to solve the problem that a double-layer silicone massager may wear or age due to long-term use or high-intensity massage, the present application provides a double-layer silicone massager preparation process and a product thereof.

[0005] In the first aspect, the present application provides a double-layer silicone massager preparation process, which adopts the following technical solution: A double-layer silicone massager preparation process, comprising the following preparation steps: S1, mixing polydimethylmethylvinylsiloxane, acrylic resin, white carbon black, filler and vulcanizing agent to obtain a mixture A; S2, injecting the mixture A into the mold, vulcanizing it, and opening the mold to obtain a container for placing the massage parts; S3, installing the massage parts in a container for placing massage parts, and then placing it in a mold, and then injecting the mixture A into the mold, vulcanizing, and opening the mold to obtain a sealed massage head liner; S4, mixing polydimethylmethylvinylsiloxane, polymethylhydrogensiloxane, acrylic resin, white carbon black, mica powder, cellulose crystals and a vulcanizing agent to obtain a mixture B; S5. Place the sealed massage head liner in a mold, inject mixture B into the mold, perform vulcanization, and open the mold to obtain a double-layer silicone massager.

[0006] The present application adopts a double-layer vulcanization process, firstly preparing a container (liner) for placing massage parts, then installing the massage parts in it, and covering it with another layer of silicone material to form a sealed massage head. This double-layer structure not only enhances the overall strength and wear resistance of the massage head, prolongs its service life, but also ensures the stable installation of the massage parts.

[0007] The inner liner needs to wrap various massage parts to prevent the parts from shifting during use, so the required silicone material needs to have sufficient flexibility and elasticity to wrap various parts. Therefore, in this application, polydimethylmethylvinylsiloxane, acrylic resin, white carbon black, filler, vulcanizer and cross-linking agent are combined to prepare a sealed massage head inner liner. The combination of polydimethylmethylvinylsiloxane and acrylic resin enhances the flexibility and elasticity of the inner liner, so that it can tightly wrap massage parts of various shapes. White carbon black and filler give the inner liner sufficient supporting force to support the various parts in the inner liner.

[0008] The liner material is soft and elastic, and the hardness for massage is not enough, so it is necessary to coat a layer of hard shell on its surface. In this application, polydimethylmethylvinylsiloxane, polymethylhydrogensiloxane, acrylic resin, white carbon black, mica powder, cellulose crystal, vulcanizing agent and cross-linking agent are used together to stably coat the surface of the liner with a hard shell, which is conducive to improving the massage intensity. Among them, the combined effect of polymethylhydrogensiloxane, mica powder and white carbon black makes the shell formed by mixture B after vulcanization have high hardness and wear resistance, which can resist wear and scratches in daily use, and can also ensure the massage effect. Wear-resistant ingredients such as mica powder, cellulose crystal and polymethylhydrogensiloxane are added to the mixture, but the whole preparation process still uses polydimethylmethylvinylsiloxane as the main substrate. This silicone material itself has good softness and elasticity, can simulate the techniques of professional masseurs, and provide a comfortable massage experience. At the same time, the addition of acrylic resin and white carbon black also helps to adjust the hardness and touch of silicone, making it more ergonomic and massage needs.

[0009] Because it is a two-layer structure, it is necessary to ensure that the inner shell and the outer shell are not separated during use of the massage head. Most of the raw materials in mixture B are the same as those in mixture A, so that during the vulcanization process in step S5, the inner shell and the outer shell can be stably connected through the action of polydimethylmethylvinylsiloxane and acrylic resin, preventing the inner shell and the outer shell from separating during use.

[0010] Preferably, the weight percentages of the raw materials used to prepare the mixture A are as follows: Polydimethylvinyl methylsiloxane 50-70% Acrylic resin 5-10% White carbon black 15-20% Vulcanizing agent 0.4-0.8% The remainder is filler.

[0011] By adopting the above technical solution, the amount of raw materials used in preparing the mixture A is optimized, giving the inner liner good flexibility and elasticity, so that it can tightly wrap massage parts of various shapes. By adding an appropriate amount of white carbon black and filler, it is ensured that the inner liner has sufficient support for the parts, while not affecting the inner liner's wrapping of the parts. The synergistic effect of the vulcanizer and the cross-linking agent promotes the cross-linking reaction of the silicone rubber, forming a stable three-dimensional network structure, and improving the durability and service life of the inner liner.

[0012] Preferably, the weight percentages of the raw materials used to prepare the mixture B are as follows: Polydimethylvinyl methylsiloxane 25-30% Polymethylhydrogensiloxane 15-20% Acrylic resin 5-10% Mica powder 10-15% Cellulose crystals 5-10% White carbon black 15-20% Vulcanizing agent 0.4-0.8% The remainder is filler.

[0013] By adopting the above technical scheme, the amount of raw materials used in preparing mixture B is optimized, and the hardness, wear resistance and weather resistance of the outer shell are further improved, so that the massage head has a better massage effect. An appropriate amount of polymethylhydrogensiloxane is added to adjust the crosslinking density and hardness of the silicone. Within this ratio range, it can effectively increase the hardness, wear resistance and weather resistance of the outer shell, while maintaining a certain flexibility, thereby improving the massage comfort of the massage head. An appropriate amount of mica powder improves the wear resistance and scratch resistance of the silicone outer shell. Too much mica powder will cause the outer shell to be too hard, affecting its massage comfort. An appropriate amount of cellulose crystals can improve the hardness and wear resistance of the outer shell.

[0014] Preferably, the polymethylhydrogensiloxane has a viscosity of 30-50 mm2 / s at 25°C and a hydrogen content of 0.8-2.4 mol%.

[0015] By adopting the above technical solution, the parameters of polymethylhydrogensiloxane are optimized, so that polymethylhydrogensiloxane has good fluidity at room temperature, which helps to promote the uniformity and stability of the material during the injection process of mixture B. At the same time, the hydrogen content within this range can promote the increase of the cross-linking density of silica gel, thereby improving its hardness and wear resistance. At the same time, it can avoid the phenomenon that the shell becomes brittle due to excessive hydrogen content, which affects the massage effect.

[0016] Preferably, the mica powder is modified mica powder, which is prepared by the following method: Triethoxysilane, tetraethyl silicate and 50-60% ethanol solution are mixed evenly, heated to 70-80° C., hydrochloric acid is added, and stirred for 1-1.5 hours to obtain a modifier; Weigh mica powder and add it to the modifier, stir, heat to 100-110° C., evacuate, and dry to obtain modified mica powder.

[0017] Preferably, the weight parts of raw materials used to prepare the modified mica powder are as follows: 3-5 parts of triethoxysilane 4-6 parts of tetraethyl silicate 10-15 parts of ethanol solution 0.5-1 part hydrochloric acid 10-15 parts of mica powder.

[0018] By adopting the above technical solution, the surface of the mica powder is covered with a layer of polysiloxane, which improves the dispersibility of the mica powder, makes it easier to disperse evenly in the silicone material, and enhances the interface bonding force between the mica powder and the matrix material, so that the shell has better hardness, wear resistance and weather resistance.

[0019] After triethoxysilane, tetraethyl silicate and 50-60% ethanol solution are evenly mixed, the hydrolysis reaction of silane and silicate is promoted under the catalytic action of hydrochloric acid to generate silanol intermediates, which then undergo condensation reaction to form oligomers or polymers containing silicon oxygen bonds to obtain modifiers. Then, the mica powder and the modifier are fully contacted by stirring so that the modifier can be evenly covered on the surface of the mica powder. Heating to 100-110°C helps the modifier to further condense and solidify on the surface of the mica powder to form a strong chemical bond, thereby improving the dispersibility of the mica powder.

[0020] Preferably, the polydimethylmethylvinylsiloxane has a vinyl content of 2-8% and a molecular weight of 15000-50000.

[0021] By adopting the above technical solution, the parameters of polydimethylmethylvinylsiloxane are optimized to ensure that the silicone forms a sufficient cross-linking network during the vulcanization process, thereby improving the strength and wear resistance of the silicone, while maintaining the good softness and elasticity of the silicone.

[0022] Preferably, in the vulcanization steps in S2 and S3, the upper mold temperature is 180-190° C., the lower mold temperature is 175-180° C., the molding pressure is 130-150 kgf / cm 3 , and the vulcanization time is 100-120 s.

[0023] By adopting the above technical solution, the parameters of the vulcanization process are optimized, which helps the uniform flow and filling of silicone in the mold, reduces the generation of bubbles and defects, promotes the vulcanization of mixture A, and forms a stable cross-linking network.

[0024] Preferably, in the vulcanization step in S5, the upper mold temperature is 200-220°C, the lower mold temperature is 180-200°C, the molding pressure is 150-160kgf / cm3, and the vulcanization time is 150-170s.

[0025] The adoption of the above technical solution is conducive to the uniform flow and filling of silicone in the mold, reducing the generation of bubbles and defects, promoting the vulcanization of mixture B, and forming a stable cross-linking network.

[0026] In a second aspect, the present application provides a double-layer silicone massager prepared by a double-layer silicone massager preparation process, which adopts the following technical solution: A double-layer silicone massager prepared by a double-layer silicone massager preparation process comprises an inner shell and an outer shell, wherein the outer shell completely covers the inner shell, and the inner shell comprises a first massage part, a second massage part and a power part, wherein the first massage part is extended along the horizontal direction of the power part, and the second massage part is located at the connection between the first massage part and the power part, and is not on the same horizontal plane as the first massage part.

[0027] By adopting the above technical solution, the double-layer silicone massager can imitate the appearance of human hands, and the massage head can realize kneading, tapping, vibration and other actions. The power part is equipped with various driving parts, the first massage part and the second massage part are equipped with massageable parts, and the driving parts can drive the massage parts to move, thereby driving the first massage part and the second massage part to move, and realize massage.

[0028] Figure numerals in the drawings of the specification: 1. first massage part; 2. second massage part; 3. power part; 4. liner; 5. outer shell.

[0029] Figure 1 It is a structural schematic diagram of a double-layer silicone massager in Example 1; Figure 2 It is a schematic diagram of the cutaway structure of the double-layer silicone massager in Example 1.

[0030] In summary, this application has the following beneficial effects: 1. The present application adopts a double-layer vulcanization process. First, a container (liner) for placing massage parts is prepared, and then the massage parts are installed therein and covered with another layer of silicone material (shell) to form a sealed massage head. This double-layer structure not only enhances the overall strength and wear resistance of the massage head, but also ensures the stable installation of the massage parts, effectively preventing the parts from shifting during use. At the same time, wear-resistant components such as polymethylhydrogensiloxane, mica powder and cellulose crystals are specially added to mixture B. The shell formed by these components after vulcanization has high hardness and wear resistance, which can resist wear and scratches in daily use, thereby significantly extending the service life of the massage head. In addition, since similar materials (such as polydimethylmethylvinylsiloxane and acrylic resin) are used in the preparation process of the liner and the shell, a stable connection can be formed during the vulcanization process, which effectively prevents the separation of the liner and the shell during use, and ensures the overall stability and durability of the massage head. DETAILED DESCRIPTION Example

[0031] Acrylic resin was purchased from Bengbu Sanyi Technology Co., Ltd., model number SMB-3020.

[0032] Example 1 A double-layer silicone massager, referring to Figure 1 and Figure 2 , including an inner shell 4 and an outer shell 5, the outer shell 5 completely covers the inner shell 4, the inner shell 4 includes a first massage part 1, a second massage part 2 and a power part 3, wherein the first massage part 1 is extended along the horizontal direction of the power part, and the second massage part 2 is located at the connection between the first massage part 1 and the power part 3, and is not in the same horizontal plane as the first massage part 1.

[0033] A double-layer silicone massager preparation process, comprising the following preparation steps: S1, 500 g of polydimethylmethylvinylsiloxane, 100 g of acrylic resin, 200 g of white carbon black, 192 g of filler (silicon dioxide) and 8 g of vulcanizing agent (2,4-dichlorobenzoyl peroxide) were mixed at a mixing temperature of 120° C. for 120 min to obtain a mixture A; S2, injecting 250g of mixture A into the mold, vulcanizing, and opening the mold to obtain a container for placing massage parts; S3, installing the massage parts in a container for placing massage parts, and then placing it in a mold, and then injecting 250g of mixture A into the mold, vulcanizing, and opening the mold to obtain a sealed massage head liner; S4, 250 g of polydimethylmethylvinylsiloxane, 200 g of polymethylhydrogensiloxane, 100 g of acrylic resin, 150 g of white carbon black, 150 g of mica powder, 100 g of cellulose crystals, 42 g of filler (silicon dioxide) and 8 g of vulcanizing agent (2,4-dichlorobenzoyl peroxide) were mixed at a mixing temperature of 120° C. for 150 min to obtain a mixture B; S5. Place the sealed massage head liner in a mold, inject 500 g of mixture B into the mold, perform vulcanization, and open the mold to obtain a double-layer silicone massager.

[0034] The viscosity of polymethylhydrogensiloxane at 25°C is 30 mm2 / s and the hydrogen content is 0.8 mol%.

[0035] The vinyl content of polydimethylmethylvinylsiloxane is 2% and the molecular weight is 15,000.

[0036] In the vulcanization steps of S2 and S3, the upper mold temperature was 180°C, the lower mold temperature was 175°C, the molding pressure was 130 kgf / cm3, and the vulcanization time was 100 s.

[0037] In the vulcanization step in S5, the upper mold temperature is 200°C, the lower mold temperature is 180°C, the molding pressure is 150kgf / cm3, and the vulcanization time is 150s.

[0038] The difference between Example 2-3 and Example 1 is that the types, amounts and parameters of raw materials used to prepare the double-layer silicone massager are different. The specific differences are shown in Table 1: Table 1: Types, amounts and parameters of raw materials used to prepare double-layer silicone massagers in Examples 1-3 Example 4 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that the mica powder is modified mica powder, which is prepared by the following method: 30 g of triethoxysilane, 40 g of tetraethyl silicate and 100 g of 50% ethanol solution were mixed evenly, heated to 70° C., 5 g of hydrochloric acid (20% by mass) was added, and stirred for 1 h to obtain a modifier; Weigh 100 g of mica powder and add it to the modifier, stir, heat to 100° C., evacuate, and dry to obtain modified mica powder.

[0039] Example 5 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that the mica powder is modified mica powder, which is prepared by the following method: 50 g of triethoxysilane, 60 g of tetraethyl silicate and 150 g of 60% ethanol solution were mixed evenly, heated to 70°C, 10 g of hydrochloric acid (20% by mass) was added, and stirred for 1 hour to obtain a modifier; Weigh 150 g of mica powder and add it to the modifier, stir, heat to 100° C., evacuate, and dry to obtain modified mica powder.

[0040] Example 6 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that the viscosity of polymethyl hydrogen siloxane at 25°C is 30 mm2 / s and the hydrogen content is 3 mol%.

[0041] Comparative Example Comparative Example 1 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that the components used in step S4 are the same as those in step S1.

[0042] Comparative Example 2 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that the components used in step S1 are the same as those in step S4.

[0043] Comparative Example 3 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that epoxy resin replaces acrylic resin.

[0044] The epoxy resin was purchased from Dongguan Sancheng Plastic Raw Materials Co., Ltd., model number SA90.

[0045] Comparative Example 4 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that mica powder is replaced by calcium carbonate.

[0046] Comparative Example 5 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that talcum powder replaces cellulose crystals.

[0047] Comparative Example 6 A preparation process of a double-layer silicone massager. The difference between this embodiment and embodiment 1 is that polydimethylmethylvinylsiloxane is used to replace polymethylhydrogensiloxane.

[0048] Detection method / test method Pressing comfort: 50 volunteers were randomly selected to experience the double-layer silicone massager with the same massage time and strength. Among them, the number of people in grade A, grade B and grade C were counted. Among them, grade A means that the pressing is very uniform, there is no tingling sensation, and it is very comfortable; grade B means that the touch is soft, but the supporting force is not enough, and the massage feels not in place; grade C means that the pressure in some parts is too high, which is a bit uncomfortable.

[0049] Wear resistance: Use Taber wear tester, load 200g, rotation speed 200r / min, and let the double-layer silicone massager rotate and wear on the grinding head for 30 minutes, and then count the wear amount.

[0050] Adhesion stability test: Cut the inner liner and outer shell of the double-layer silicone massager to ensure that the inner liner and the outer shell are both 100mm×50mm×2mm, and then place the sample in a tensile testing machine, install a fixture suitable for sample testing, set the test speed to 50mm / min, and record the peeling force. The experimental data is shown in Table 2: Table 2 Experimental data of Examples 1-6 and Comparative Examples 1-5 It can be seen from Examples 1-6 and Comparative Examples 1-6 in combination with Table 2 that the double-layer silicone massager prepared by the process of the present application has good massage effect, good wear resistance, and the inner and outer layers are not easy to separate, and can be used for a long time.

[0051] Comparing Example 1 with Comparative Examples 1-2, the bonding stability test in Comparative Examples 1-2 is improved, but in the pressing comfort test, the number of people with pressing grade A in Comparative Examples 1-2 is greatly reduced, and the wear amount of Comparative Example 1 is greatly improved in the wear resistance test, indicating that the double-layer silicone massager prepared by the process in the present application has good massage effect and service life.

[0052] Comparing Example 1 with Comparative Examples 3-6, the number of people with pressing grade A in the pressing comfort test in Comparative Examples 3-6 is greatly reduced, and the wear amount of Comparative Examples 3-6 in the wear resistance test is greatly improved, and the peeling force in Comparative Example 3 is greatly reduced, indicating that by optimizing the composition of the outer shell, the massage effect and durability of the double-layer silicone massager can be effectively guaranteed, while the bonding stability of the inner liner and the outer shell can be guaranteed.

[0053] Comparing Example 1 with Example 4-5, the number of people with pressing grade A in the pressing comfort test in Example 4-5 increased, and the wear amount of Example 4-5 decreased in the wear resistance test. The peeling force in Comparative Example 3 was not much larger, indicating that the modified mica powder prepared in the present application is beneficial to improving the massage effect and durability of the double-layer silicone massager, while also improving the bonding stability between the inner liner and the outer shell.

[0054] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A double-layer silicone massager preparation process, characterized in that: The method comprises the following preparation steps: S1, mixing polydimethylmethylvinylsiloxane, acrylic resin, white carbon black, filler and vulcanizing agent to obtain a mixture A; S2, injecting the mixture A into the mold, vulcanizing it, and opening the mold to obtain a container for placing the massage parts; S3, installing the massage parts in a container for placing massage parts, and then placing it in a mold, and then injecting the mixture A into the mold, vulcanizing, and opening the mold to obtain a sealed massage head liner; S4, mixing polydimethylmethylvinylsiloxane, polymethylhydrogensiloxane, acrylic resin, white carbon black, mica powder, cellulose crystals and a vulcanizing agent to obtain a mixture B; S5. Place the sealed massage head liner in a mold, inject mixture B into the mold, perform vulcanization, and open the mold to obtain a double-layer silicone massager.

2. A double-layer silicone massager preparation process according to claim 1, characterized in that: The weight percentages of the raw materials used to prepare the mixture A are as follows: Polydimethylmethylvinylsiloxane 50-70% Acrylic resin 5-10% White carbon black 15-20% Vulcanizing agent 0.4-0.8% The remainder is filler.

3. A preparation process for a double-layer silicone massager according to claim 1, characterized in that: The weight percentages of the raw materials used to prepare the mixture B are as follows: Polydimethylmethylvinylsiloxane 25-30% Polymethylhydrogensiloxane 15-20% Acrylic resin 5-10% Mica powder 10-15% Cellulose crystals 5-10% White carbon black 15-20% Vulcanizing agent 0.4-0.8% The remainder is filler.

4. The preparation process of a double-layer silicone massager according to claim 1, characterized in that: The polymethyl hydrogen siloxane has a viscosity of 30-50 mm2 / s at 25°C and a hydrogen content of 0.8-2.4 mol%.

5. The preparation process of a double-layer silicone massager according to claim 1, characterized in that: The mica powder is modified mica powder, which is prepared by the following method: Triethoxysilane, tetraethyl silicate and 50-60% ethanol solution are mixed evenly, heated to 70-80°C, hydrochloric acid is added, and stirred for 1-1.5 hours to obtain a modifier; Weigh mica powder and add it to the modifier, stir, heat to 100-110° C., evacuate, and dry to obtain modified mica powder.

6. A preparation process for a double-layer silicone massager according to claim 5, characterized in that: The weight parts of raw materials used to prepare the modified mica powder are as follows: 3-5 parts of triethoxysilane 4-6 parts of tetraethyl silicate 10-15 parts of ethanol solution 0.5-1 part hydrochloric acid 10-15 parts of mica powder.

7. The preparation process of a double-layer silicone massager according to claim 1, characterized in that: The polydimethylmethylvinylsiloxane has a vinyl content of 2-8% and a molecular weight of 15000-50000.

8. The preparation process of a double-layer silicone massager according to claim 1, characterized in that: In the vulcanization steps of S2 and S3, the upper mold temperature is 180-190°C, the lower mold temperature is 175-180°C, the molding pressure is 130-150kgf / cm3, and the vulcanization time is 100-120s.

9. The preparation process of a double-layer silicone massager according to claim 1, characterized in that: In the vulcanization step in S5, the upper mold temperature is 200-220°C, the lower mold temperature is 180-200°C, the molding pressure is 150-160kgf / cm3, and the vulcanization time is 150-170s.

10. A double-layer silicone massager made by the double-layer silicone massager preparation process according to any one of claims 1 to 9, characterized in that: The invention comprises an inner liner (4) and an outer shell (5), wherein the outer shell (5) completely covers the inner liner (4), and the inner liner (4) comprises a first massage part (1), a second massage part (2) and a power part (3), wherein the first massage part (1) is arranged to extend in a horizontal direction along the power part (3), and the second massage part (2) is located at the connection between the first massage part (1) and the power part (3), and is not on the same horizontal plane as the first massage part (1).

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