Intelligent pressure-adjusting sleeping item and manufacturing method therefor

Abstract

The present invention discloses an intelligent pressure-sensitive adjustable bedding and a manufacturing method thereof, belonging to the technical field of bedding. The intelligent pressure-sensitive adjustable bedding comprises an inner pad, an inflation / deflation assembly, and a fixing base, wherein the inner pad and the inflation / deflation assembly are connected to each other and both are arranged in the fixing base; the inner pad is formed with a plurality of first clamping grooves and a plurality of second clamping grooves; the second clamping grooves are symmetrically distributed on both sides of the first clamping grooves; the first clamping grooves are provided with first airbags; the second clamping grooves are provided with second airbags; and both the first airbags and the second airbags are connected to the inflation / deflation assembly; the inner pad comprises a latex core and a waterproof and flame-retardant cover, wherein the waterproof and flame-retardant cover wraps around the outside of the latex core, and the latex core is made of an antibacterial material. This intelligent pressure-sensitive adjustable bedding not only has a good supporting force, but also features adjustable support hardness and softness, making it suitable for both the young and the elder. Meanwhile, this intelligent pressure-sensitive adjustable bedding also boasts excellent flame-retardant performance and antibacterial effect, with diverse functions that meet the usage needs of people.

Description

[0001] The present invention claims the priority of the Chinese patent application filed with the Chinese Patent Office on January 29, 2023, with an application number of 202310070156.6 and entitled "Intelligent Pressure-Sensitive Adjustable Bedding and Manufacturing Method Thereof", the contents of which are incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present invention relates to an intelligent pressure-sensitive adjustable bedding and a manufacturing method thereof, belonging to the technical field of bedding.BACKGROUND

[0003] A mattress is an item placed between the human body and a bed to ensure that consumers can enjoy healthy and comfortable sleep. The mattresses are made of various materials, and mattresses made of different materials can bring people different sleeping experiences. An air mattress is a type of mattress that is very comfortable to sleep on and easy to carry when moving. Chinese patent CN217429633U discloses an airbag mattress, wherein the airbag mattress includes a mattress body (1), a support airbag (2), an inflation / deflation system (3), an air pipeline (4) connecting the inflation / deflation system (3) and the support airbag (2), and an air tube fixing mechanism (5) installed on the mattress body (1), wherein the air tube fixing mechanism (5) is provided with an insertion space (501) for the insertion of the air pipeline (4), so as to prevent the air pipeline (4) from detaching from the air tube fixing mechanism (5). However, this airbag mattress has poor air permeability and lacks specific structural support, making it unsuitable for the elderly and children. Moreover, once the airbag mattress is damaged, it is very troublesome to repair. In addition, this airbag mattress also cannot provide precise support for different parts of the human body, resulting in poor comfort.

[0004] Owing to its characteristics of high elasticity, excellent flex resistance, shock resistance and creep resistance of the rubber film, as well as being natural and harmless, biodegradable and environmentally friendly, natural latex has been increasingly widely used in modern home furnishings. However, natural latex is not fire-resistant. Once a fire breaks out indoors, mattresses made of latex materials will fuel the fire and make the fire more severe. In addition, as the service time increases, various bacteria will accumulate on the surface and inside of the natural latex products (such as bedding), thereby threatening the health of people and affecting their home life.SUMMARY

[0005] To solve the above problems, the present invention provides an intelligent pressure-sensitive adjustable bedding and a manufacturing method thereof. The bedding not only has a good supporting force, but also features adjustable support hardness and softness, making it suitable for both the young and the elder. Meanwhile, this intelligent pressure-sensitive adjustable bedding also boasts excellent flame-retardant performance and antibacterial effect, with diverse functions that meet the usage needs of people.

[0006] Specific technical solutions provided by the present invention are as follows: according to one aspect of the present invention, an intelligent pressure-sensitive adjustable bedding is provided, and the intelligent pressure-sensitive adjustable bedding includes an inner pad, an inflation / deflation assembly, and a fixing base, wherein the inner pad and the inflation / deflation assembly are connected to each other and both are arranged in the fixing base; the inner pad is formed with a plurality of first clamping grooves and a plurality of second clamping grooves; the second clamping grooves are symmetrically distributed on both sides of the first clamping grooves; the first clamping grooves are provided with first airbags; the second clamping grooves are provided with second airbags; and the inflation / deflation assembly includes an air pump and a fiber sensor, and both the first airbags and the second airbags are connected to the fiber sensor; the inner pad includes a latex core and a waterproof and flame-retardant cover, wherein the waterproof and flame-retardant cover wraps around the outside of the latex core, and the latex core is made of an antibacterial material; the method for using the intelligent pressure-sensitive adjustable bedding includes: receiving in real time pressure data from the fiber sensor and converting the pressure data into a pressure matrix; and analyzing and calculating the pressure matrix to determine the current posture of the user; dividing the pressure matrix into regions according to the current posture of the user, and calculating a pressure equilibrium value of each region; and controlling the air pump to inflate or deflate the first airbag or the second airbag in each region respectively, and after an error between the pressure value corresponding to each first airbag or second airbag and the pressure equilibrium value falls within an allowable error range, obtaining the corresponding gas volume variation.

[0007] Optionally, the inflation / deflation assembly further includes an electromagnetic valve, and the air pump, the electromagnetic valve and the fiber sensor are connected in sequence.

[0008] According to another aspect of the present invention, a method for manufacturing an intelligent pressure-sensitive adjustable bedding is provided, wherein the intelligent pressure-sensitive adjustable bedding is as described in the above aspect, and the manufacturing method includes: (1) placing the first airbag and the second airbag in the first clamping groove and the second clamping groove, respectively, and then wrapping the waterproof and flame-retardant cover around the outside of the latex core; (2) connecting the air pump, the electromagnetic valve, and the fiber sensor in sequence via air tubes, then placing the air pump at a tail end of the fixing base; and (3) passing the fiber sensor through the waterproof and flame-retardant cover and the latex core in sequence from bottom to top, and connecting the fiber sensor to the first airbag and second airbag respectively, then filling the remaining space in the fixing base with the inner pad, to obtain the intelligent pressure-sensitive adjustable bedding.

[0009] Optionally, the method for preparing the waterproof and flame-retardant cover includes: (1) dissolving sebacic acid in a 50-70% ethanol solution, adding aluminum hydroxide, performing condensation reflux at 70-90°C for 6-10 hours, and then performing suction filtration, washing, and drying to obtain the product; (2) mixing the product obtained in step (1), polylactide, and antimony trioxide, and conducting a pre-polycondensation reaction at a vacuum degree of 0.03-0.07 MPa and a temperature of 235-275°C for 20-40 minutes; then performing polycondensation with stirring at a temperature of 270-280°C and a vacuum degree of 0.006-0.01 MPa for 2-4 hours to obtain a copolyester solution; and (3) placing a cotton fabric in a solution containing 3-7% crosslinking agent EH at a bath ratio of 1:(25-40), performing two dips and two nips; then impregnating the cotton fabric in the copolyester solution obtained in step (2), performing two dips and two nips with a liquid pick-up rate of 60-80%, drying at 60-80°C, and baking at 100-120°C for 2-5 minutes; finally, uniformly spraying the fluorine-free waterproofing agent on the surface of the cotton fabric, and drying to obtain the waterproof and flame-retardant cover.

[0010] Optionally, the molecular weight of the copolyester solution is 30,000-100,000.

[0011] Optionally, the mass ratio of sebacic acid to aluminum hydroxide is 1:(1.8-2.5); the mass ratio of the product, polylactide, and antimony trioxide is (100-300):(180-320): 1; and the fluorine-free waterproofing agent is fluorine-free waterproofing agent ECO or fluorine-free waterproofing agent HG-ST, with a concentration of 30-60 g / L.

[0012] Optionally, the latex core includes the following components in parts by weight: 100-120 parts of natural latex, 2-10 parts of potassium ricinoleate, 2-8 parts of potassium oleate, 2-10 parts of sulphur, 1-5 parts of potassium pyrophosphate, 2-3 parts of phosphite-based antioxidant, 2-10 parts of vulcanization accelerator, 2-6 parts of active agent zinc oxide, and 5-12 parts of ion-doped antibacterial agent.

[0013] Optionally, the method for preparing the ion-doped antibacterial agent includes: uniformly mixing ethyl orthosilicate, anhydrous ethanol, and nitric acid in a mass ratio of 1:(3-5):(0.05-0.08) and stirring for 3-5 hours at 25-35°C to obtain a silica sol; then dissolving silver nitrate, zinc nitrate, citric acid, and nitric acid in anhydrous ethanol, and dropwise adding to the silica sol while stirring in the dark for 2-4 hours, to obtain the ion-doped antibacterial agent.

[0014] Optionally, the mass ratio of silver nitrate, zinc nitrate, citric acid, and nitric acid is (0.5-1):(0.5-0.8):1:(0.04-0.06); and the addition amounts of silver nitrate and zinc nitrate are both 0.8-2 wt% of ethyl orthosilicate.

[0015] Optionally, the method for preparing the latex core includes: (1) uniformly mixing natural latex, potassium ricinoleate, potassium oleate, sulphur, potassium pyrophosphate, and phosphorous acid-based antioxidants, adding a vulcanization accelerator and continuing to stir for 8-12 hours to mature, then adding the active agent zinc oxide and ion-doped antibacterial agent and continuing to stir for 0.5-2 hours to obtain a pre-mixed rubber compound; (2) adding sodium fluorosilicate to the pre-mixed rubber compound, stirring under nitrogen-filled conditions to induce foaming, then gelling and shaping under high-temperature steam at 110-130°C, and demoulding to obtain the product; and (3) after washing, spin-drying, and drying the product, cutting and processing to obtain the latex core.

[0016] Optionally, the method may further include: embedding a control box in the fixing base, wherein the control box is connected to the air pump, the electromagnetic valve, and the fiber sensor.

[0017] The beneficial effects of the present invention include, but are not limited to: 1. As to the intelligent pressure-sensitive adjustable bedding of the present invention, through the cooperation between the inner pad and the first airbag and the second airbag, the bedding not only provides an excellent supporting force, but also allows for adjustable support hardness and softness; simultaneously, by separately arranging the first airbag and the second airbag, the pressure on different regions of the body can be precisely regulated to enhance comfort, and damaged airbags are easily repaired or replaced without affecting the normal use of other airbags; furthermore, the bedding also features excellent waterproofing, flame-retardant, and antibacterial effects, thereby enhancing comfort, safety and health, and meeting diversified needs of people. 2. In the intelligent pressure-sensitive adjustable bedding of the present invention, surface modification is performed on aluminum hydroxide with sebacic acid, to enhance the surface activity of aluminum hydroxide, improve dispersibility, and further enhance flame-retardant properties, and ensure environmental friendliness and no pollution. The product is copolymerized with polylactide to obtain a copolyester with excellent flame retardancy and thermal stability. This is because the copolyester can form a continuous and dense network structure protective layer. When it undergoes thermal decomposition at high temperatures, the protective layer effectively prevents further thermal decomposition of the matrix and delays material loss. By adding the crosslinking agent EH, the copolyester is tightly bonded to the fabric. In addition, the copolyester fills the gaps between the fabric fibers, thereby further enhancing the mechanical properties of the fabric. Compared to fluorine-containing waterproofing agents, fluorine-free waterproofing agents not only increase the contact angle on the surface of the fabric, but also significantly improve the waterproof performance and wash resistance of the fabric, while aligning with ecological principles and enhancing usage safety. 3. In the intelligent pressure-sensitive adjustable bedding of the present invention, the addition of zinc not only reduces the amount of silver used and lowers costs, but also helps to stabilize the ionic state of silver; the large specific surface area and high surface activity of silica sol create favorable conditions for sufficient contact of antibacterial ions (Ag +< , Zn 2+< ) with bacteria. By fixing silver and zinc to the surface of the silica sol, the resulting ion-doped antibacterial agent not only possesses strong efficacy and sustained activity of organic antibacterial agents, but also possesses safety and heat resistance of inorganic antibacterial agents. After introducing the ion-doped antibacterial agent into the latex core, not only the antibacterial broad-spectrum and stability are improved, but also antibacterial activity and durability are enhanced. 4. In the intelligent pressure-sensitive adjustable bedding of the present invention, the latex core possesses the advantages of high antibacterial properties, hygiene, and strong practicality, thereby improving the living quality of people. Batch-wise mastication of raw materials to achieve appropriate plasticity facilitates the formation of uniform foam cells during a foaming stage, improves the dispersibility of various raw materials, and enhances the appearance quality and qualification rate of the vulcanized products. Through synergistic cooperation of raw materials and processes, the produced latex core can effectively extend the antibacterial duration and efficacy, reduce or avoid bacterial infections caused by the latex core during use, and ensure safety and environmental protection and energy-saving performance. 5. As to the intelligent pressure-sensitive adjustable bedding of the present invention, a waterproof and flame-retardant cover wraps around the outside of the latex core, thereby preventing the bedding from getting damp and causing discomfort to the human body on the one hand, and avoiding potential electrical hazards generated by the airbags during use and enhancing safety on the other hand. A control box is embedded in the fixing base, to easily control the gas volume in the first airbag and the second airbag, and improve the comfort of the bedding. The manufacturing method of this bedding is simple with a reasonable design, and is convenient for later maintenance, and the bedding has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are provided to further illustrate the present invention and form a part of the present invention. The exemplary examples of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation to the present invention. In the drawings: Fig. 1 is a side sectional view of the intelligent pressure-sensitive adjustable bedding involved in the examples of the present invention. Fig. 2 is a structural schematic diagram of the intelligent pressure-sensitive adjustable bedding involved in the examples of the present invention.

[0019] Reference numerals: 1. fixing base, 2. first clamping groove, 3. second clamping groove, 4. first airbag, 5. second airbag, 6. latex core, 7. waterproof and flame-retardant cover, 8. air pump, 9. electromagnetic valve, 10. fiber sensor, 11. control box.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The endpoints of the ranges and any values disclosed in this text are not limited to the exact ranges or values disclosed herein. These ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoint values of each range, the endpoint values of each range and individual point values, and individual point values can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be considered as specifically disclosed in this text.

[0021] For those examples where specific conditions are not specified, the operations shall be performed in accordance with conventional conditions or the conditions recommended by the manufacturer. All the raw materials or instruments whose manufacturers are not indicated are conventional products that can be purchased from the market.Example 1

[0022] Referring to Figs. 1 and 2, this example provides an intelligent pressure-sensitive adjustable bedding, including an inner pad, an inflation / deflation assembly, and a fixing base 1, wherein the inner pad and the inflation / deflation assembly are connected to each other and both are arranged in the fixing base 1, with a reasonable layout and improved user comfort; the inner pad is formed with a plurality of first clamping grooves 2 and a plurality of second clamping grooves 3, the second clamping grooves 3 are symmetrically distributed on both sides of the first clamping grooves 2; the first clamping grooves 2 are provided with first airbags 4; the second clamping grooves 3 are provided with second airbags 5; and the inflation / deflation assembly includes an air pump 8 and a fiber sensor 10; and both the first airbags 4 and the second airbags 5 are connected to the fiber sensor 10, to facilitate inflation or deflation of the first airbags 4 and the second airbags 5.

[0023] The inner pad includes a latex core 6 and a waterproof and flame-retardant cover 7, wherein the waterproof and flame-retardant cover 7 wraps around the outside of the latex core 6, and the latex core 6 is made of an antibacterial material, to enhance comfort, safety, and health during use.

[0024] The method for using the intelligent pressure-sensitive adjustable bedding includes: receiving in real time pressure data from the fiber sensor 10 and converting the pressure data into a pressure matrix; and analyzing and calculating the pressure matrix to determine the current posture of a user.

[0025] Specifically, the head direction and the foot direction of the intelligent pressure-sensitive adjustable bedding are defined, and a top view of the bedding is obtained with the head facing upwards. In the top view of the bedding, the row number i and the column number j of each first airbag and second airbag are marked. Then, the pressure value Aij transmitted back by the fiber sensor 10 corresponding to the first airbag 4 and the second airbag 5 (i, j) is displayed in the i-th row and j-th column of the pressure matrix, and finally a complete pressure matrix is obtained.

[0026] Further, different adjustment gears are set according to different weight ranges borne by the first airbag 4 and the second airbag 5; different adjustment gears correspond to different inflation amounts or deflation amounts of the first airbag 4 and the second airbag 5; the corresponding adjustment gear is determined according to the weight range to which the weight of the human body belongs; in the pressure matrix, the minimum pressure that the human body can generate on the intelligent pressure-sensitive adjustable bedding is set as a minimum pressure threshold, the element region with a value greater than the minimum pressure threshold is determined as the pressure-bearing region, and the number of elements in the pressure-bearing region is counted as the current pressure-bearing area of the bedding; the current pressure-bearing area is compared with the preset pressure-bearing area intervals of different posture types to determine the current posture type of the user; wherein the posture types include a sitting posture, lying on the back and lying on the side; lying on the back specifically includes supine and prone, and lying on the side specifically includes lying on the left side and lying on the right side.

[0027] Dividing the pressure matrix into regions according to the current posture of the user, and calculating a pressure equilibrium value of each region.

[0028] Specifically, the position of each body part of the user is determined according to the posture of the user, so as to divide the pressure-bearing region into a trunk region, a left upper limb region, a right upper limb region, a left lower limb region, and a right lower limb region; the minimum value and the maximum value of the element value in each region are respectively obtained, and an average value is calculated to obtain the pressure equilibrium value corresponding to each region.

[0029] Controlling the air pump to inflate or deflate the first airbag 4 or the second airbag 5 in each region respectively, and after an error between the pressure value corresponding to each first airbag 4 or second airbag 5 and the pressure equilibrium value falls within an allowable error range, obtaining the corresponding gas volume variation.

[0030] Specifically, within the pressure-bearing region, the first airbag 4 or the second airbag 5 corresponding to the elements with values greater than the pressure equilibrium value is slowly deflated, and the first airbag 4 or the second airbag 5 corresponding to the elements with values less than the pressure equilibrium value is slowly inflated; the pressure values borne by each first airbag 4 and second airbag 5 during the inflation or deflation process are monitored in real time, and the real-time gas volume variation is recorded; when the error between the pressure values borne by the first airbag 4 and the second airbag 5 and their corresponding pressure equilibrium values respectively falls within the allowable error range, the inflation or deflation process is stopped.

[0031] Furthermore, the inflation / deflation assembly further includes an electromagnetic valve 9 and the air pump 8, wherein the electromagnetic valve 9 and the fiber sensor 10 are connected in sequence to facilitate the acquisition of pressure signals from the first airbag 4 and the second airbag 5 and transmit the pressure signals to the control box 11.

[0032] Furthermore, the first airbags 4 are arranged in a matrix pattern, and the second airbags 5 are equally spaced along the length direction of the inner pad, thereby facilitating adaptation to the curves of the human body, reducing fatigue, and effectively enhancing the comfort of the bedding.

[0033] Specifically, each first airbag 4 is connected to a fiber sensor 10, an electromagnetic valve 9, and an air pump 8 in sequence, and each second airbag 5 is connected to a fiber sensor 10, an electromagnetic valve 9, and an air pump 8 in sequence, thereby allowing individual adjustment of the height of each first airbag 4 and each second airbag 5 and providing an appropriate supporting force for different parts of the body.

[0034] Furthermore, the fixing base 1 is embedded with a control box 11, and the control box 11 is connected to the air pump 8, the electromagnetic valve 9, and the fiber sensor 10 to control the first airbag 4 and the second airbag 5 to reach a predetermined height.

[0035] The above method for manufacturing the intelligent pressure-sensitive adjustable bedding includes the following specific steps: (1) placing the first airbag 4 and the second airbag 5 in the first clamping groove 2 and the second clamping groove 3, respectively, and then wrapping the waterproof and flame-retardant cover 7 around the outside of the latex core 6; (2) connecting the air pump 8, the electromagnetic valve 9, and the fiber sensor 10 in sequence via air tubes, then placing the air pump 8 at a tail end of the fixing base 1; embedding the control box 11 on the fixing base 1, and connecting the control box 11 to the air pump 8, the electromagnetic valve 9, and the fiber sensor 10; and (3) passing the fiber sensor 10 through the waterproof and flame-retardant cover 7 and the latex core 6 in sequence from bottom to top, and connecting the fiber sensor 10 to the first airbag 4 and second airbag 5 respectively, then filling the remaining space in the fixing base 1 with the inner pad, to obtain the intelligent pressure-sensitive adjustable bedding.

[0036] The operating principle of the intelligent pressure-sensitive adjustable bedding is as follows: when the human body lies on the bedding in any posture, the first airbags 4 and the second airbags 5 will reach different heights after sensing pressure. The fiber sensor 10 transmits the pressure signals obtained from the first airbags 4 and the second airbags 5 to the control box 11; and the control box 11 then controls the air pump 8 to inflate or deflate the first airbags 4 and the second airbags 5 according to a preset program, such that the first airbags 4 and the second airbags 5 reach preset heights, thereby ensuring that all the parts of the human body receive an appropriate supporting force, helping to relax the body and enhancing the user experience.Example 2

[0037] A method for preparing the waterproof and flame-retardant cover includes the following steps: (1) dissolving sebacic acid in a 60% ethanol solution, adding aluminum hydroxide, wherein the mass ratio of sebacic acid to aluminum hydroxide is 1:2, performing condensation reflux at 80°C for 8 hours, and then performing suction filtration, washing, and drying to obtain the product; (2) mixing the product, polylactide, and antimony trioxide with a mass ratio of 200:250:1, and conducting a pre-polycondensation reaction at a vacuum degree of 0.05 MPa and a temperature of 255°C for 30 minutes; then performing polycondensation with stirring at a temperature of 275°C and a vacuum degree of 0.008 MPa for 3 hours to obtain a copolyester solution; and (3) placing a cotton fabric in a solution containing 5% crosslinking agent EH at a bath ratio of 1:33, performing two dips and two nips; then impregnating the cotton fabric in the copolyester solution obtained in step (2), performing two dips and two nips with a liquid pick-up rate of 70%, drying at 70°C, and baking at 110°C for 3 minutes; finally, uniformly spraying the fluorine-free waterproofing agent ECO with a concentration of 45 g / L on the surface of the cotton fabric, and drying to obtain the waterproof and flame-retardant cover. Example 3

[0038] A method for preparing the waterproof and flame-retardant cover includes the following steps: (1) dissolving sebacic acid in a 50% ethanol solution, adding aluminum hydroxide, wherein the mass ratio of sebacic acid to aluminum hydroxide is 1:1.8, performing condensation reflux at 70°C for 10 hours, and then performing suction filtration, washing, and drying to obtain the product; (2) mixing the product, polylactide, and antimony trioxide with a mass ratio of 100:180:1, and conducting a pre-polycondensation reaction at a vacuum degree of 0.03 MPa and a temperature of 235°C for 40 minutes; then performing polycondensation with stirring at a temperature of 270°C and a vacuum degree of 0.006 MPa for 4 hours to obtain a copolyester solution; and (3) placing a cotton fabric in a solution containing 3% crosslinking agent EH at a bath ratio of 1:25, performing two dips and two nips; then impregnating the cotton fabric in the copolyester solution obtained in step (2), performing two dips and two nips with a liquid pick-up rate of 60%, drying at 60°C, and baking at 100°C for 5 minutes; finally, uniformly spraying the fluorine-free waterproofing agent HG-ST with a concentration of 30 g / L on the surface of the cotton fabric, and drying to obtain the waterproof and flame-retardant cover. Example 4

[0039] A method for preparing the waterproof and flame-retardant cover includes the following steps: (1) dissolving sebacic acid in a 70% ethanol solution, adding aluminum hydroxide, wherein the mass ratio of sebacic acid to aluminum hydroxide is 1:2.5, performing condensation reflux at 90°C for 6 hours, and then performing suction filtration, washing, and drying to obtain the product; (2) mixing the product, polylactide, and antimony trioxide with a mass ratio of 300:320:1, and conducting a pre-polycondensation reaction at a vacuum degree of 0.07 MPa and a temperature of 275°C for 20 minutes; then performing polycondensation with stirring at a temperature of 280°C and a vacuum degree of 0.01 MPa for 2 hours to obtain a copolyester solution; and (3) placing a cotton fabric in a solution containing 7% crosslinking agent EH at a bath ratio of 1:40, performing two dips and two nips; then impregnating the cotton fabric in the copolyester solution obtained in step (2), performing two dips and two nips with a liquid pick-up rate of 80%, drying at 80°C, and baking at 120°C for 2 minutes; finally, uniformly spraying the fluorine-free waterproofing agent ECO with a concentration of 60 g / L on the surface of the cotton fabric, and drying to obtain the waterproof and flame-retardant cover. Comparative Example 1

[0040] Comparative Example 1 differs from Example 2 in that sebacic acid is replaced with succinic acid.Comparative Example 2

[0041] Comparative Example 2 differs from Example 2 in that polylactide is replaced with polypropylene.Comparative Example 3

[0042] Comparative Example 3 differs from Example 2 in that the mass ratio of sebacic acid to aluminum hydroxide is 1:0.5.Comparative Example 4

[0043] Comparative Example 4 differs from Example 2 in that the mass ratio of the product, polylactide, and antimony trioxide is 400:400:1.Comparative Example 5

[0044] Comparative Example 5 differs from Example 2 in that the concentration of the fluorine-free waterproofing agent is 10 g / L.

[0045] Various performances of the waterproof and flame-retardant covers obtained from Examples 2-4 and Comparative Examples 1-5 were tested, with the results shown in Table 1.

[0046] Vertical burning test: in accordance with ASTM D 3801 standards, a vertical burning tester was used to test the waterproof and flame-retardant covers obtained from Examples 2-4 and Comparative Examples 1-5.

[0047] Limiting oxygen index test: in accordance with ASTM D 2863-2009 standards, an oxygen index tester was used to test the waterproof and flame-retardant covers obtained from Examples 2-4 and Comparative Examples 1-5.

[0048] Hydrophobicity test: an optical contact angle tester was used to test the surface wettability of the waterproof and flame-retardant covers obtained from Examples 2-4 and Comparative Examples 1-5, and the corresponding contact angles were recorded. Table 1Flame retardant rating (UL-94)Oxygen index (%)Contact angle (°)Example 2V-036.4148.6Example 3V-035.2146.5Example 4V-035.7147.2Comparative Example 1V-124.4148.6Comparative Example 2V-125.1148.6Comparative Example 3V-219.6148.6Comparative Example 4V-120.8148.6Comparative Example 5V-036.4121.4

[0049] As can be seen from the test results in Table 1, the waterproof and flame-retardant covers prepared by the present invention all achieved a V-0 rating in the UL-94 vertical burning test, with an oxygen index of 35.2-36.4% and a contact angle of 146.5-148.6°, indicating excellent flame retardancy and waterproof performance.Example 5

[0050] A method for preparing the latex core includes the following steps: (1) uniformly mixing 110 parts by weight of natural latex, 6 parts by weight of potassium ricinoleate, 5 parts by weight of potassium oleate, 6 parts by weight of sulphur, 3 parts by weight of potassium pyrophosphate, and 2.5 parts by weight of phosphorous acid-based antioxidants, adding 6 parts by weight of vulcanization accelerator and continuing to stir for 10 hours to mature, then adding 4 parts by weight of active agent zinc oxide and 8 parts by weight of ion-doped antibacterial agent and continuing to stir for 1.2 hours to obtain a pre-mixed rubber compound; (2) adding sodium fluorosilicate to the pre-mixed rubber compound, stirring under nitrogen-filled conditions to induce foaming, then gelling and shaping under high-temperature steam at 120°C, and demoulding to obtain the product; and (3) after washing, spin-drying, and drying the product, cutting and processing to obtain the latex core.

[0051] The method for preparing the ion-doped antibacterial agent includes the following steps: uniformly mixing ethyl orthosilicate, anhydrous ethanol, and nitric acid in a mass ratio of 1:4:0.06 and stirring for 4 hours at 30°C to obtain a silica sol; then dissolving silver nitrate, zinc nitrate, citric acid, and nitric acid in anhydrous ethanol in a mass ratio of 0.8:0.6:1:0.05, and dropwise adding to the silica sol, wherein the addition amount of silver nitrate is 1.4 wt% of ethyl orthosilicate, and the addition amount of zinc nitrate is 1.1 wt% of ethyl orthosilicate, and continuing to stir in the dark for 3 hours, to obtain the ion-doped antibacterial agent.Example 6

[0052] A method for preparing a latex core includes the following steps: (1) uniformly mixing 100 parts by weight of natural latex, 2 parts by weight of potassium ricinoleate, 2 parts by weight of potassium oleate, 2 parts by weight of sulphur, 1 part by weight of potassium pyrophosphate, and 2 parts by weight of phosphorous acid-based antioxidants, adding 2 parts by weight of vulcanization accelerator and continuing to stir for 8 hours to mature, then adding 2 parts by weight of active agent zinc oxide and 5 parts by weight of ion-doped antibacterial agent and continuing to stir for 0.5 hour to obtain a pre-mixed rubber compound; (2) adding sodium fluorosilicate to the pre-mixed rubber compound, stirring under nitrogen-filled conditions to induce foaming, then gelling and shaping under high-temperature steam at 110°C, and demoulding to obtain the product; and (3) after washing, spin-drying, and drying the product, cutting and processing to obtain the latex core.

[0053] The method for preparing the ion-doped antibacterial agent includes the following steps: uniformly mixing ethyl orthosilicate, anhydrous ethanol, and nitric acid in a mass ratio of 1:3:0.05 and stirring for 5 hours at 25°C to obtain a silica sol; then dissolving silver nitrate, zinc nitrate, citric acid, and nitric acid in anhydrous ethanol in a mass ratio of 0.5:0.5:1:0.04, and dropwise adding to the silica sol, wherein the addition amount of silver nitrate is 0.8 wt% of ethyl orthosilicate, and the addition amount of zinc nitrate is 0.8 wt% of ethyl orthosilicate, and continuing to stir in the dark for 2 hours, to obtain the ion-doped antibacterial agent.Example 7

[0054] A method for preparing a latex core includes the following steps: (1) uniformly mixing 120 parts by weight of natural latex, 10 parts by weight of potassium ricinoleate, 8 parts by weight of potassium oleate, 10 parts by weight of sulphur, 5 parts by weight of potassium pyrophosphate, and 3 parts by weight of phosphorous acid-based antioxidants, adding 10 parts by weight of vulcanization accelerator and continuing to stir for 12 hours to mature, then adding 6 parts by weight of active agent zinc oxide and 12 parts by weight of ion-doped antibacterial agent, and continuing to stir for 2 hours to obtain a pre-mixed rubber compound; (2) adding sodium fluorosilicate to the pre-mixed rubber compound, stirring under nitrogen-filled conditions to induce foaming, then gelling and shaping under high-temperature steam at 130°C, and demoulding to obtain the product; and (3) after washing, spin-drying, and drying the product, cutting and processing to obtain the latex core.

[0055] The method for preparing the ion-doped antibacterial agent includes the following steps: uniformly mixing ethyl orthosilicate, anhydrous ethanol, and nitric acid in a mass ratio of 1:5:0.08 and stirring for 3 hours at 35°C to obtain a silica sol; then dissolving silver nitrate, zinc nitrate, citric acid, and nitric acid in anhydrous ethanol in a mass ratio of 1:0.8:1:0.06, and dropwise adding to the silica sol, wherein the addition amount of silver nitrate is 2 wt% of ethyl orthosilicate, and the addition amount of zinc nitrate is 1.6 wt% of ethyl orthosilicate, and continuing to stir in the dark for 4 hours, to obtain the ion-doped antibacterial agent.Comparative Example 6

[0056] Comparative Example 6 differs from Example 5 in that zinc nitrate is replaced with copper nitrate.Comparative Example 7

[0057] Comparative Example 7 differs from Example 5 in that zinc nitrate is not added.Comparative Example 8

[0058] Comparative Example 8 differs from Example 5 in that the mass ratio of silver nitrate, zinc nitrate, citric acid, and nitric acid is 0.1:1.5:1:0.01.Comparative Example 9

[0059] Comparative Example 9 differs from Example 5 in that the method for preparing the ion-doped antibacterial agent includes the following steps: dissolving silver nitrate, zinc nitrate, citric acid, and nitric acid in anhydrous ethanol in a mass ratio of 0.8:0.6:1:0.05, and stirring in the dark for 3 hours, to obtain the ion-doped antibacterial agent.Comparative Example 10

[0060] Comparative Example 10 differs from Example 5 as follows: (1) uniformly mixing 110 parts by weight of natural latex, 6 parts by weight of potassium ricinoleate, 5 parts by weight of potassium oleate, 6 parts by weight of sulphur, 3 part by weight of potassium pyrophosphate, 2.5 parts by weight of phosphorous acid-based antioxidants, 6 parts by weight of vulcanization accelerator, 4 parts by weight of active agent zinc oxide and 8 parts by weight of ion-doped antibacterial agent to obtain a pre-mixed rubber compound.

[0061] In accordance with the method specified in GB / T 20944.3-2008, the antibacterial rates of the latex cores obtained from Examples 5-7 and Comparative Examples 6-10 were tested using Escherichia coli and Staphylococcus aureus, with the results shown in Table 2. Table 2Antibacterial rates against Escherichia coli (%)Antibacterial rates against Staphylococcus aureus (%)Example 598.697.3Example 697.495.8Example 798.196.4Comparative Example 682.583.2Comparative Example 772.473.8Comparative Example 880.779.6Comparative Example 974.376.1Comparative Example 1084.685.2

[0062] As shown in Table 2, the antibacterial rates of the latex cores in Examples 5-7 against Escherichia coli and Staphylococcus aureus are significantly higher than those in Comparative Examples 6-10. This demonstrates that the latex cores provided by the present invention possess the advantages of high antibacterial property, hygiene, and strong practicality, thereby reducing or preventing bacterial infections caused by the latex cores during use and improving the living quality of people.

[0063] The above description is merely examples of the present invention, and the protection scope of the present invention is not limited by these specific examples, but is determined by the claims of the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements and the like made within the technical ideas and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent pressure-sensitive adjustable bedding, comprising an inner pad, an inflation / deflation assembly, and a fixing base, wherein the inner pad and the inflation / deflation assembly are connected to each other and both are arranged in the fixing base; the inner pad is formed with a plurality of first clamping grooves and a plurality of second clamping grooves; the second clamping grooves are symmetrically distributed on both sides of the first clamping grooves; the first clamping grooves are provided with first airbags; the second clamping grooves are provided with second airbags; and the inflation / deflation assembly comprises an air pump and a fiber sensor, and both the first airbags and the second airbags are connected to the fiber sensor; the inner pad comprises a latex core and a waterproof and flame-retardant cover, wherein the waterproof and flame-retardant cover wraps around the outside of the latex core, and the latex core is made of an antibacterial material; the method for using the intelligent pressure-sensitive adjustable bedding comprises: receiving in real time pressure data from the fiber sensor and converting the pressure data into a pressure matrix; and analyzing and calculating the pressure matrix to determine the current posture of a user; dividing the pressure matrix into regions according to the current posture of the user, and calculating a pressure equilibrium value of each region; and controlling the air pump to inflate or deflate the first airbag or the second airbag in each region respectively, and after an error between the pressure value corresponding to each first airbag or second airbag and the pressure equilibrium value falls within an allowable error range, obtaining the corresponding gas volume variation.

2. The intelligent pressure-sensitive adjustable bedding according to claim 1, wherein the inflation / deflation assembly further comprises an electromagnetic valve, and the air pump, the electromagnetic valve and the fiber sensor are connected in sequence.

3. A method for manufacturing an intelligent pressure-sensitive adjustable bedding, wherein the intelligent pressure-sensitive adjustable bedding is as described in claim 2, and the manufacturing method comprises: (1) placing the first airbag and the second airbag in the first clamping groove and the second clamping groove, respectively, and then wrapping the waterproof and flame-retardant cover around the outside of the latex core; (2) connecting the air pump, the electromagnetic valve, and the fiber sensor in sequence via air tubes, then placing the air pump at a tail end of the fixing base; and (3) passing the fiber sensor through the waterproof and flame-retardant cover and the latex core in sequence from bottom to top, and connecting the fiber sensor to the first airbag and the second airbag respectively, then filling the remaining space in the fixing base with the inner pad, to obtain the intelligent pressure-sensitive adjustable bedding.

4. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 3, wherein the method for preparing the waterproof and flame-retardant cover comprises: (1) dissolving sebacic acid in a 50-70% ethanol solution, adding aluminum hydroxide, performing condensation reflux at 70-90°C for 6-10 hours, and then performing suction filtration, washing, and drying to obtain the product; (2) mixing the product obtained in step (1), polylactide, and antimony trioxide, and conducting a pre-polycondensation reaction at a vacuum degree of 0.03-0.07 MPa and a temperature of 235-275°C for 20-40 minutes; then performing polycondensation with stirring at a temperature of 270-280°C and a vacuum degree of 0.006-0.01 MPa for 2-4 hours to obtain a copolyester solution; and (3) placing a cotton fabric in a solution containing 3-7% crosslinking agent EH at a bath ratio of 1:(25-40), performing two dips and two nips; then impregnating the cotton fabric in the copolyester solution obtained in step (2), performing two dips and two nips with a liquid pick-up rate of 60-80%, drying at 60-80°C, and baking at 100-120°C for 2-5 minutes; finally, uniformly spraying the fluorine-free waterproofing agent on the surface of the cotton fabric, and drying to obtain the waterproof and flame-retardant cover.

5. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 4, wherein the mass ratio of sebacic acid to aluminum hydroxide is 1:(1.8-2.5); the mass ratio of the product, polylactide, and antimony trioxide is (100-300):(180-320):1; and the fluorine-free waterproofing agent is fluorine-free waterproofing agent ECO or fluorine-free waterproofing agent HG-ST, with a concentration of 30-60 g / L.

6. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 3, wherein the latex core comprises the following components in parts by weight: 100-120 parts of natural latex, 2-10 parts of potassium ricinoleate, 2-8 parts of potassium oleate, 2-10 parts of sulphur, 1-5 parts of potassium pyrophosphate, 2-3 parts of phosphite-based antioxidant, 2-10 parts of vulcanization accelerator, 2-6 parts of active agent zinc oxide, and 5-12 parts of ion-doped antibacterial agent.

7. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 6, wherein the method for preparing the ion-doped antibacterial agent comprises: uniformly mixing ethyl orthosilicate, anhydrous ethanol, and nitric acid in a mass ratio of 1:(3-5):(0.05-0.08) and stirring for 3-5 hours at 25-35°C to obtain a silica sol; then dissolving silver nitrate, zinc nitrate, citric acid, and nitric acid in anhydrous ethanol, and dropwise adding to the silica sol while continuing to stir in the dark for 2-4 hours, to obtain the ion-doped antibacterial agent.

8. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 7, wherein the mass ratio of silver nitrate, zinc nitrate, citric acid, and nitric acid is (0.5-1):(0.5-0.8):1:(0.04-0.06); and the addition amounts of silver nitrate and zinc nitrate are both 0.8-2 wt% of ethyl orthosilicate.

9. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 8, wherein the method for preparing the latex core comprises: (1) uniformly mixing natural latex, potassium ricinoleate, potassium oleate, sulphur, potassium pyrophosphate, and phosphorous acid-based antioxidants, adding a vulcanization accelerator and continuing to stir for 8-12 hours to mature, then adding the active agent zinc oxide and ion-doped antibacterial agent and continuing to stir for 0.5-2 hours to obtain a pre-mixed rubber compound; (2) adding sodium fluorosilicate to the pre-mixed rubber compound, stirring under nitrogen-filled conditions to induce foaming, then gelling and shaping under high-temperature steam at 110-130°C, and demoulding to obtain the product; and (3) after washing, spin-drying, and drying the product, cutting and processing to obtain the latex core.

10. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 3, further comprising: embedding a control box in the fixing base, wherein the control box is connected to the air pump, the electromagnetic valve, and the fiber sensor.

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