Mute and shock-absorbing mattress

Abstract

The invention discloses a mute damping mattress, and belongs to the technical field of mattresses. The mute and shock-absorbing mattress comprises an elastic layer, a shock-absorbing functional layer and a bottom supporting layer from top to bottom, the damping functional layer comprises an upper-layer cushion, a spring layer and a lower-layer cushion, and the spring layer is arranged between the upper-layer cushion and the lower-layer cushion; the bottom supporting layer comprises a supporting base layer and a sponge supporting layer, a plurality of circular grooves are formed in the upper surface of the supporting base layer in the width direction of the mattress, circular protruding blocks corresponding to the circular grooves are arranged on the lower surface of the sponge supporting layer, and the circular grooves are connected with the circular protruding blocks in a clamped mode. The elastic layer is arranged, so that good breathability and rebound resilience are achieved, and the elastic layer is better attached to the human body curve; by arranging the damping function layer and the bottom supporting layer, the whole mute damping performance of the mattress is improved, the supporting base layer and the sponge supporting layer are connected in a clamped mode, and the situation that the damping effect is affected due to stress displacement is avoided.

Description

Technical Field

[0001] The present application relates to a silent and shock-absorbing mattress, belonging to the technical field of mattresses. Background Art

[0002] Mattress is a common daily household item. It is an item between the human body and the bed used to ensure consumers get a healthy and comfortable sleep. It is made of a variety of materials. Spring mattress is a modern commonly used mattress with better performance. Its cushion core is composed of springs. This type of mattress has the advantages of good elasticity, good support, strong air permeability and durability.

[0003] Since springs are generally made of metal, they have the following disadvantages during compression and rebound: 1. The compression process will inevitably cause the adjacent elastic rings of the spring to contact, and the metal collision will make a sound, making it difficult to achieve silence; 2. The spring is prone to displacement or offset during the compression and rebound process, and is prone to linkage with other adjacent springs, causing the flatness of the sofa or mattress to decrease. And as the use time increases, the mattress is prone to rebound deterioration or even sag, seriously affecting the user experience.

[0004] In order to reduce the noise caused by the friction between the springs in the mattress, some spring mattresses in the prior art have separate bags to pack the springs separately and then install them in the mattress, which can effectively avoid the collision between the springs in the mattress and reduce the noise of the springs. However, the existing independent pocket springs will rub against the edge of the bag when the springs are stretched and contracted, resulting in noise between the bag and the springs.

[0005] Chinese patent CN219742284U discloses a solution of setting a soundproof sleeve or silicone tube on the outside of a metal spring. However, under the above setting, the collision of the metal spring itself still produces a certain amount of noise, and the soundproof sleeve or silicone tube cannot form a good match with the deformation of the rigid spring, and the soundproof sleeve or silicone tube cannot effectively absorb the force through elastic deformation. It is also difficult to fundamentally solve the problem that the supporting force and resilience decrease with the extension of the use time, and even the dent occurs, which affects the user experience. Summary of the invention

[0006] In order to solve the above problems, a silent and shock-absorbing mattress is provided. An elastic layer is provided to have good air permeability and resilience, so that the mattress fits the human body curve better. A shock-absorbing functional layer and a bottom support layer are provided to improve the overall silent and shock-absorbing performance of the mattress. The support base layer and the sponge support layer are clamped together to avoid force displacement and affect the shock-absorbing effect.

[0007] According to one aspect of the present application, a sound-absorbing and shock-absorbing mattress is provided, which includes, from top to bottom, an elastic layer, a shock-absorbing functional layer and a bottom support layer; the shock-absorbing functional layer includes an upper pad, a spring layer and a lower pad, and the spring layer is arranged between the upper pad and the lower pad; the bottom support layer includes a support base layer and a sponge support layer, and the upper surface of the support base layer is provided with a plurality of circular grooves along the width direction of the mattress, and the lower surface of the sponge support layer is provided with circular protrusions corresponding to the circular grooves, and the circular grooves are snap-fitted with the circular protrusions.

[0008] Optionally, the spring layer includes a central support area and surrounding support areas, the central support area includes a central limiting pad, an upper silicone spring and a lower silicone spring, and the surrounding support area includes a single-layer silicone spring.

[0009] Specifically, since the stress conditions in the middle and around the mattress are different, the spring layer is provided with a middle support area and surrounding support areas. The middle support area is provided with a double-layer silicone spring. A middle limiting pad is provided between the two layers of silicone springs to limit the upper silicone spring and the lower silicone spring to a certain extent to avoid misalignment and displacement, thereby improving its supporting performance. The surrounding support areas are relatively less stressed and have relatively low requirements for supporting force. Therefore, a single-layer silicone spring is used, which can reduce the weight of the mattress on the one hand and reduce costs on the other.

[0010] Optionally, a plurality of limiting holes are provided on the middle limiting pad, and flexible grooves are provided inside the limiting holes.

[0011] Optionally, the silicone spring comprises a silicone material and a metal spring wrapped inside the silicone material, and the upper edge and the lower edge of the silicone spring are provided with raised rings to engage with the flexible groove.

[0012] Optionally, the silicone material comprises, by weight, 80-100 parts of food-grade silicone, 20-30 parts of polyurethane resin, 10-15 parts of toughening resin, 1-2 parts of antioxidant, 1-1.5 parts of lubricant, and 1-2 parts of silicone vulcanizer;

[0013] The structural formula of the toughening resin is shown in Formula I:

[0014]

[0015] In Formula I, x is selected from any integer between 50 and 60, y is selected from any integer between 40 and 50, n is selected from any integer between 5 and 8, and R is selected from hydroxyl or carboxyl.

[0016] Specifically, the present application adds polyurethane resin to food-grade silicone, which can significantly improve the elasticity and mechanical properties of food-grade silicone, but the mixed compatibility of food-grade silicone and polyurethane resin is poor, and in the reciprocating compression and rebound test of silicone springs, there will be problems of cracking and delamination. On this basis, the present application further adds the above-mentioned toughening resin, which plays the role of a concoction agent and lubricant, can improve the compatibility of food-grade silicone and polyurethane resin, reduce cracking or delamination of silicone materials, and thus improve the weather resistance of silicone materials; in addition, the toughening resin is composed of a carbon chain with a hydroxyl or carboxyl group and a carbon chain without a functional group, and the carbon chain without a functional group can improve the toughness of the silicone material, and the carbon chain with a hydroxyl or carboxyl group can form hydrogen bonds or covalent bonds with the polyurethane resin and food-grade silicone in the silicone system, further improving the mechanical properties of the silicone material and extending its service life.

[0017] Optionally, the method for preparing the food-grade silica gel comprises the following steps:

[0018] S1: mixing ethyl orthosilicate and sodium hydroxide solution, stirring and adding γ-aminopropyltrimethoxysilane to react and treat to obtain a silica gel matrix;

[0019] S2: Sodium alginate and polyethylenediamine-modified chitosan are mixed and ground to obtain a modifier, and the modifier is dissolved in a solvent; a silica gel matrix is ​​added to perform ultrasonic oscillation dispersion, and the mixture is heated at 60 to 75° C. for reaction for 45 to 60 minutes to obtain the food-grade silica gel, wherein the sodium alginate and polyethylenediamine-modified chitosan account for 3 to 5 wt% and 1 to 3 wt% of the silica gel matrix, respectively.

[0020] Sodium alginate and polyethylenediamine-modified chitosan are added to the preparation of the above-mentioned food-grade silica gel, which can improve the antibacterial properties of the food-grade silica gel, thereby improving the safety of the use of the silica gel spring. At the same time, the added polyethylenediamine-modified chitosan can also improve the connection strength with the metal spring, thereby preventing the silica gel material from falling off from the metal spring during long-term use.

[0021] Specifically, the addition of sodium alginate, on the one hand, forms a cross-linked network between the molecular chain of sodium alginate and the silica gel matrix at 60-75°C, which can effectively improve the mechanical strength of the silica gel material and is beneficial to the stability of the structure; on the other hand, after chitosan modification, the density of protonated amino groups increases, the antibacterial property is good, and the connection strength with the metal spring can be improved to avoid the separation of the silica gel material and the metal spring during long-term use.

[0022] Optionally, the preparation method of polyethylenediamine-modified chitosan comprises the following steps:

[0023] The polyethylenediamine is dissolved in N,N-dimethylformamide, chitosan and glutaraldehyde aqueous solution are added, reacted at 20-30°C, filtered, washed and dried to obtain polyethylenediamine-modified chitosan.

[0024] Specifically, the mass ratio of polyethylenediamine to chitosan is (1-2):1.

[0025] Specifically, the preparation method of polyethylenediamine-modified chitosan is simple and has a good modification effect.

[0026] Optionally, a connecting layer formed by a silane coupling agent and glutaraldehyde is provided between the metal spring and the silicone material, which comprises 1-2 parts of silane coupling agent and 0.5-1.3 parts of glutaraldehyde in terms of weight. The silane coupling agent and glutaraldehyde are coated on the surface of the metal spring to form the connecting layer.

[0027] Optionally, the silane coupling agent is selected from at least one of bis(γ-triethoxysilylpropyl)tetrasulfide and bis(γ-triethoxysilylpropyl)disulfide.

[0028] The connecting layer formed between the metal spring and the silicone material can enhance the connectivity between the metal spring and the silicone material, improve the bonding strength between the two, and thus improve the integrity of the silicone material. The silane coupling agent added to the connecting layer can form a covalent bond with the hydroxyl or carboxyl group carried in the toughening resin, thereby improving the connection strength between the connecting layer and the silicone material. Glutaraldehyde can undergo a cross-linking reaction with the amino group carried in the food-grade silicone to form a chemical bond, thereby also improving the connection strength between the connecting layer and the silicone material. Therefore, the connecting layer formed by the silane coupling agent and glutaraldehyde can achieve a double connection with the silicone material, thereby improving the integrity of the silicone spring, making the silicone material more compatible with the properties of the metal spring, thereby improving the overall elasticity and load-bearing capacity of the silicone spring.

[0029] Optionally, the antioxidant is tert-butylhydroquinone;

[0030] The lubricant is at least one of n-butyl stearate, methyl stearate, ethyl stearate, barium stearate, magnesium stearate, zinc stearate, and aluminum stearate;

[0031] The silicone vulcanizing agent is a platinum vulcanizing agent.

[0032] Specifically, the preparation method of the silicone spring includes the following steps:

[0033] (1) Clean and dry the metal spring;

[0034] (2) mixing corresponding amounts of food-grade silicone, polyurethane resin, toughening resin, antioxidant and lubricant and extruding and granulating to obtain silicone masterbatch, and then mixing the silicone masterbatch with a silicone vulcanizer to obtain a material to be processed;

[0035] (3) Extruding the material to be processed into a silicone inner tube, then sleeve the metal spring on the outside of the silicone inner tube, and then coating part of the material to be processed on the outside of the metal spring by melt injection to form a silicone outer tube;

[0036] (4) Vulcanization is performed to obtain the silicone spring.

[0037] Specifically, after step (1), the method further includes coating the metal spring with a mixture of a silane coupling agent and glutaraldehyde to form a connecting layer after the metal spring is dried.

[0038] Specifically, the vulcanization temperature in step (4) is 180-200°C.

[0039] Specifically, the metal spring is made of cast iron, steel or stainless steel.

[0040] The beneficial effects of this application include but are not limited to:

[0041] 1. According to a silent and shock-absorbing mattress of the present application, an elastic layer is provided to have good air permeability and resilience, and to better fit the curve of the human body; a shock-absorbing functional layer and a bottom support layer are provided to improve the overall silent and shock-absorbing performance of the mattress, and the support base layer and the sponge support layer are clamped to avoid force displacement and affect the shock-absorbing effect.

[0042] 2. According to a silent and shock-absorbing mattress of the present application, the spring layer is provided with a central support area and surrounding support areas. The central support area is provided with a double-layer silicone spring. A central limiting pad is provided between the two layers of silicone springs to limit the upper silicone springs and the lower silicone springs to a certain extent to avoid misalignment and displacement, thereby improving their supporting performance. The surrounding support areas are relatively less stressed and have relatively low requirements for supporting force. Therefore, a single-layer silicone spring is used, which can reduce the weight of the mattress on the one hand and reduce costs on the other.

[0043] 3. According to a silent and shock-absorbing mattress of the present application, a silicone material is arranged according to the characteristics of a metal spring, so that the performance of the silicone material is adapted to the metal spring, thereby being able to maintain good resilience and silent and shock-absorbing effects during multiple deformations, and by arranging a connecting layer, the wrapping property of the silicone material and the metal spring is improved, and the occurrence of separation of the silicone material and the metal spring is reduced; by adding sodium alginate and polyethylenediamine-modified chitosan to food-grade silicone, its safety of use and antibacterial properties are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0045] Figure 1It is a schematic front view cross-sectional view of a silent and shock-absorbing mattress involved in an embodiment of the present application.

[0046] Figure 2 It is a partial front view cross-sectional schematic diagram of a silent and shock-absorbing mattress spring layer involved in an embodiment of the present application.

[0047] Figure 3 It is a front view cross-sectional schematic diagram of a silicone spring of a sound-absorbing and shock-absorbing mattress involved in an embodiment of the present application.

[0048] Figure 4 It is a schematic diagram of the three-dimensional structure of a middle limiting pad of a sound-proof and shock-absorbing mattress involved in an embodiment of the present application.

[0049] List of parts and reference numerals:

[0050] 1. Elastic layer; 2. Upper pad; 3. Spring layer; 4. Lower pad; 5. Sponge support layer; 6. Support base layer; 7. Round bump; 8. Middle limit pad; 9. Upper silicone spring; 10. Lower silicone spring; 11. Single-layer silicone spring; 12. Limit hole; 13. Silicone material; 14. Metal spring; 15. Raised ring. DETAILED DESCRIPTION

[0051] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0052] Unless otherwise specified, the raw materials in the examples and comparative examples of the present application were purchased through commercial channels.

[0053] Unless otherwise specified, the methods used in the examples and comparative examples of the present application are conventional methods in the prior art.

[0054] refer to Figure 1 to Figure 4 , provides a silent and shock-absorbing mattress, which includes an elastic layer 1, a shock-absorbing functional layer and a bottom supporting layer from top to bottom; the shock-absorbing functional layer includes an upper pad 2, a spring layer 3 and a lower pad 4, and the spring layer 3 is arranged between the upper pad 2 and the lower pad 4; the bottom supporting layer includes a supporting base layer 6 and a sponge supporting layer 5, and the upper surface of the supporting base layer 6 is provided with a plurality of circular grooves along the width direction of the mattress, and the lower surface of the sponge supporting layer 5 is provided with circular protrusions 7 corresponding to the circular grooves, and the circular grooves are clamped with the circular protrusions 7.

[0055] Specifically, the elastic layer 1 is provided to have good air permeability and resilience, so as to better fit the curve of the human body; the shock-absorbing functional layer and the bottom support layer are provided to improve the overall quiet and shock-absorbing performance of the mattress, and the support base layer 6 and the sponge support layer 5 are clamped to avoid force displacement and affect the shock-absorbing effect.

[0056] Specifically, the present application does not limit the number and size of the circular grooves and the circular protrusions 7, and those skilled in the art may make selections based on actual conditions.

[0057] Specifically, the spring layer 3 includes a plurality of silicone springs arranged in sequence.

[0058] Specifically, the present application does not limit the number of silicone springs, and those skilled in the art may make a selection based on actual conditions.

[0059] As an implementation mode, the spring layer 3 includes a central support area and surrounding support areas, the central support area includes a central limiting pad 8, an upper silicone spring 9 and a lower silicone spring 10, and the surrounding support area includes a single-layer silicone spring 11.

[0060] Specifically, since the stress conditions in the middle and around the mattress are different, the spring layer 3 is provided with a middle support area and surrounding support areas. The middle support area is provided with a double-layer silicone spring. A middle limiting pad 8 is provided between the two layers of silicone springs to limit the upper silicone spring 9 and the lower silicone spring 10 to a certain extent to avoid misalignment and displacement, thereby improving their supporting performance. The surrounding support areas are relatively less stressed and have relatively low requirements for supporting force. Therefore, a single-layer silicone spring 11 is used, which can reduce the weight of the mattress on the one hand and reduce costs on the other.

[0061] As an implementation manner, a plurality of limiting holes 12 are provided on the middle limiting pad 8 , and flexible grooves are provided inside the limiting holes 12 .

[0062] Specifically, the present application does not make specific limitations on the number and size of the limiting holes 12, and those skilled in the art may make a selection based on actual conditions.

[0063] Specifically, by providing the limiting hole 12 and the flexible groove, the silicone spring can be limited to a certain extent, thereby preventing the silicone spring from being displaced and shifted, resulting in a decrease in its supporting force.

[0064] As an implementation mode, the silicone spring includes a silicone material 13 and a metal spring 14 wrapped inside the silicone material 13 , and the upper and lower edges of the silicone spring are provided with raised rings 15 to engage with the flexible groove.

[0065] Specifically, the upper edge and the lower edge of the silicone spring are provided with a raised ring 15 matching the flexible groove, and the raised ring 15 is engaged with the flexible groove to achieve the connection between the silicone spring and the middle limiting pad 8.

[0066] Example 1

[0067] Preparation of silicone spring 1#:

[0068] (1) Clean and dry the metal spring, which is made of steel;

[0069] (2) 100 parts of food-grade silica gel, 30 parts of polyurethane resin, 15 parts of toughening resin, 2 parts of antioxidant tertiary butyl hydroquinone, and 1.5 parts of lubricant ethyl stearate are mixed and extruded to obtain silica gel masterbatch, and then the silica gel masterbatch is mixed with 2 parts of silica gel vulcanizer platinum vulcanizer to obtain a material to be processed; wherein the toughening resin is a copolymer of ethylene and 6-heptene-1-ol, and the molar ratio of ethylene to 6-heptene-1-ol is 50:50;

[0070] (3) Extruding the material to be processed into a silicone inner tube, then sleeve the metal spring on the outside of the silicone inner tube, and then coating part of the material to be processed on the outside of the metal spring by melt injection to form a silicone outer tube;

[0071] (4) Vulcanize at 200°C to obtain silicone spring 1#.

[0072] Preparation of food grade silica gel 1#:

[0073] S1: 31.2 ml of ethyl orthosilicate and 150 ml of sodium hydroxide solution (0.01 mol / L) were mixed, stirred and 3.8 ml of γ-aminopropyltrimethoxysilane was added, heated to 40°C for reflux reaction for 10 h, then heated to 70°C for reflux reaction for 10 h, cooled, filtered under reduced pressure, washed with methanol solution three times, and dried to obtain a powdered silica gel matrix;

[0074] S2: Sodium alginate and polyethylenediamine-modified chitosan are mixed and ground to obtain a modifier, which is dissolved in methanol and then added to a silica gel matrix for ultrasonic oscillation dispersion. The mixture is heated at 75°C for 45 minutes to obtain food-grade silica gel. Sodium alginate and polyethylenediamine-modified chitosan account for 3wt% and 2wt% of the silica gel matrix, respectively.

[0075] Preparation of polyethylenediamine modified chitosan:

[0076] The polyethylenediamine was dissolved in N,N-dimethylformamide, chitosan and glutaraldehyde aqueous solution were added, reacted at 20°C, filtered, washed and dried to obtain polyethylenediamine-modified chitosan; the mass ratio of polyethylenediamine to chitosan was 1:1.

[0077] Example 2

[0078] Preparation of silicone spring 2#:

[0079] (1) Clean and dry the metal spring, which is made of steel;

[0080] (2) 80 parts of food-grade silica gel, 20 parts of polyurethane resin, 10 parts of toughening resin, 1 part of antioxidant tertiary butyl hydroquinone, and 1 part of lubricant n-butyl stearate are mixed and extruded to obtain silica gel masterbatch, and then the silica gel masterbatch is mixed with 1 part of silica gel vulcanizer platinum vulcanizer to obtain the material to be processed; wherein the toughening resin is a copolymer of ethylene and 10-undecenoic acid, and the molar ratio of ethylene to 10-undecenoic acid is 60:40;

[0081] (3) Extruding the material to be processed into a silicone inner tube, then sleeve the metal spring on the outside of the silicone inner tube, and then coating part of the material to be processed on the outside of the metal spring by melt injection to form a silicone outer tube;

[0082] (4) Vulcanize at 180°C to obtain silicone spring 2#.

[0083] Preparation of food grade silica gel 2#:

[0084] S1: 31.2 ml of ethyl orthosilicate and 150 ml of sodium hydroxide solution (0.01 mol / L) were mixed, stirred and 3.8 ml of γ-aminopropyltrimethoxysilane was added, heated to 40°C for reflux reaction for 10 h, then heated to 70°C for reflux reaction for 10 h, cooled, filtered under reduced pressure, washed with methanol solution three times, and dried to obtain a powdered silica gel matrix;

[0085] S2: Sodium alginate and polyethylenediamine-modified chitosan are mixed and ground to obtain a modifier, which is dissolved in methanol and then added to a silica gel matrix for ultrasonic oscillation dispersion. The mixture is heated at 60°C for 60 minutes to obtain food-grade silica gel. Sodium alginate and polyethylenediamine-modified chitosan account for 5wt% and 3wt% of the silica gel matrix, respectively.

[0086] Preparation of polyethylenediamine modified chitosan:

[0087] The polyethylenediamine was dissolved in N,N-dimethylformamide, chitosan and glutaraldehyde aqueous solution were added, reacted at 30°C, filtered, washed and dried to obtain polyethylenediamine-modified chitosan; the mass ratio of polyethylenediamine to chitosan was 2:1.

[0088] Example 3

[0089] The difference between Example 3 and Example 1 is that 9-decene-1-ol is used instead of 6-heptene-1-ol, and the rest is the same.

[0090] Example 4

[0091] The difference between Example 4 and Example 1 is that after step (1), the method further includes coating a mixture of 1 part of bis(γ-triethoxysilylpropyl) disulfide and 1.3 parts of glutaraldehyde on the metal spring to form a connecting layer, and the rest are the same.

[0092] Example 5

[0093] The difference between Example 5 and Example 1 is that a mixture of 2 parts of bis(γ-triethoxysilylpropyl)tetrasulfide and 0.5 parts of glutaraldehyde is applied to form a connecting layer, and the rest is the same.

[0094] Example 6

[0095] The difference between Example 6 and Example 5 is that γ-aminopropyltrimethoxysilane is used to replace bis(γ-triethoxysilylpropyl)tetrasulfide, and the rest is the same.

[0096] Example 7

[0097] The difference between Example 7 and Example 5 is that the connecting layer does not include bis(γ-triethoxysilylpropyl)tetrasulfide, and the rest is the same.

[0098] Example 8

[0099] The difference between Example 8 and Example 5 is that glutaraldehyde is not included in the connecting layer, and the rest is the same.

[0100] Example 9

[0101] The difference between Example 9 and Example 1 is that the mass ratio of polyethylenediamine to chitosan is 3:1, and the rest are the same.

[0102] Comparative Example 1

[0103] The difference between Comparative Example 1 and Example 1 is that the toughening resin is a copolymer of ethylene and acrylic acid, the molar ratio of ethylene to acrylic acid is 60:40, and the rest are the same.

[0104] Comparative Example 2

[0105] The difference between Comparative Example 2 and Example 1 is that the toughening resin is 20 parts, and the rest is the same.

[0106] Comparative Example 3

[0107] The difference between Comparative Example 3 and Example 1 is that the polyurethane resin is 40 parts, and the rest are the same.

[0108] Comparative Example 4

[0109] The difference between Comparative Example 4 and Example 1 is that unmodified chitosan is added in the preparation of food-grade silica gel, and the rest are the same.

[0110] Comparative Example 5

[0111] The difference between Comparative Example 5 and Example 1 is that sodium alginate is not included, and the rest is the same.

[0112] Test Example 1 Mechanical properties of silicone spring

[0113] The above silicone spring was subjected to a compression-rebound test. A universal testing machine was used to apply a force of 50 kN to the silicone spring. The external force was then removed to allow it to recover. The compression test was repeated until the silicone spring cracked or the silicone material fell off the metal spring. The number of times the silicone spring could be repeatedly compressed and rebounded, as well as the deformation rate of the silicone spring when the silicone spring cracked or the silicone material fell off the metal spring were recorded. The results are shown in the table below. The deformation rate is calculated as: [(initial silicone spring height-final silicone spring height) / initial silicone spring height]×100%.

[0114] Weather resistance: The silicone spring was placed at 80°C and 60% humidity for 15 days, and then placed at 80°C and dried in a vacuum environment for 1 day as one test cycle. Each silicone spring was subjected to three test cycles to observe whether the silicone material coated on the silicone spring was powdered, and then 100 compression-rebound tests were performed to observe whether the silicone material coated on the silicone spring fell off. The test results are shown in Table 1.

[0115] Table 1 Mechanical properties test results of silicone spring

[0116]

[0117] Test Example 2 Antibacterial performance of silicone spring

[0118] Staphylococcus aureus, Escherichia coli and Aspergillus cyanobacterium were used as test strains, and the bacteria were suspended in a phosphate buffer with a concentration of 100umol / L and a pH value of 7 to prepare bacterial solutions. The above silicone springs were immersed in the bacterial solutions and shaken to make the bacterial solutions fully contact with the silicone springs. After standing for 30 minutes, the silicone springs were taken out, centrifuged to obtain the supernatant, and the supernatant was diluted with a phosphate buffer with a concentration of 100umol / L and a pH value of 7. The dilution was added to the culture medium and cultured at a temperature of 37°C for 24 hours. The number of bacterial colonies was counted. The results are shown in Table 2.

[0119] Table 2 Test results of antibacterial properties of silicone springs

[0120]

[0121] The above is only the embodiment of the present application, and the protection scope of the present application is not limited by these specific embodiments, but is determined by the claims of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the technical ideas and principles of the present application should be included in the protection scope of the present application.

Claims

1. A silent and shock-absorbing mattress, characterized in that: From top to bottom, it includes an elastic layer, a shock-absorbing functional layer and a bottom support layer; the shock-absorbing functional layer includes an upper pad, a spring layer and a lower pad, and the spring layer is arranged between the upper pad and the lower pad; the bottom support layer includes a support base layer and a sponge support layer, and the upper surface of the support base layer is provided with a plurality of circular grooves along the width direction of the mattress, and the lower surface of the sponge support layer is provided with circular protrusions corresponding to the circular grooves, and the circular grooves are clamped with the circular protrusions.

2. The silent and shock-absorbing mattress according to claim 1, characterized in that: The spring layer includes a middle support area and surrounding support areas, the middle support area includes a middle limit pad, an upper silicone spring and a lower silicone spring, and the surrounding support area includes a single-layer silicone spring.

3. The silent and shock-absorbing mattress according to claim 2, characterized in that: The middle limiting pad is provided with a plurality of limiting holes, and the inner sides of the limiting holes are provided with flexible grooves.

4. The silent and shock-absorbing mattress according to claim 3, characterized in that: The silicone spring comprises a silicone material and a metal spring wrapped inside the silicone material. The upper edge and the lower edge of the silicone spring are provided with raised rings to be clamped with the flexible groove.

5. The silent and shock-absorbing mattress according to claim 4, characterized in that: The silicone material comprises, by weight, 80-100 parts of food-grade silicone, 20-30 parts of polyurethane resin, 10-15 parts of toughening resin, 1-2 parts of antioxidant, 1-1.5 parts of lubricant, and 1-2 parts of silicone vulcanizer; The structural formula of the toughening resin is shown in Formula I: In Formula I, x is selected from any integer between 50 and 60, y is selected from any integer between 40 and 50, n is selected from any integer between 5 and 8, and R is selected from hydroxyl or carboxyl.

6. The silent and shock-absorbing mattress according to claim 5, characterized in that: The preparation method of the food-grade silica gel comprises the following steps: S1: mixing ethyl orthosilicate and sodium hydroxide solution, stirring and adding γ-aminopropyltrimethoxysilane to react and treat to obtain a silica gel matrix; S2: Sodium alginate and polyethylenediamine-modified chitosan are mixed and ground to obtain a modifier, and the modifier is dissolved in a solvent; a silica gel matrix is ​​added to perform ultrasonic oscillation dispersion, and the mixture is heated at 60 to 75° C. for reaction for 45 to 60 minutes to obtain the food-grade silica gel, wherein the sodium alginate and polyethylenediamine-modified chitosan account for 3 to 5 wt% and 1 to 3 wt% of the silica gel matrix, respectively.

7. The silent and shock-absorbing mattress according to claim 6, characterized in that: The preparation method of the polyethylenediamine-modified chitosan comprises the following steps: The polyethylenediamine is dissolved in N,N-dimethylformamide, chitosan and glutaraldehyde aqueous solution are added, reacted at 20-30°C, filtered, washed and dried to obtain polyethylenediamine-modified chitosan.

8. The silent and shock-absorbing mattress according to claim 4, characterized in that: A connecting layer formed by a silane coupling agent and glutaraldehyde is also provided between the metal spring and the silicone material. The connecting layer comprises 1-2 parts of a silane coupling agent and 0.5-1.3 parts of glutaraldehyde in terms of weight. The silane coupling agent and glutaraldehyde are coated on the surface of the metal spring to form the connecting layer.

9. The silent and shock-absorbing mattress according to claim 8, characterized in that: The silane coupling agent is selected from at least one of bis(γ-triethoxysilylpropyl)tetrasulfide and bis(γ-triethoxysilylpropyl)disulfide.

10. The silent and shock-absorbing mattress according to claim 5, characterized in that: The antioxidant is tert-butylhydroquinone; The lubricant is at least one of n-butyl stearate, methyl stearate, ethyl stearate, barium stearate, magnesium stearate, zinc stearate, and aluminum stearate; The silicone vulcanizing agent is a platinum vulcanizing agent.

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