A smart pressure-sensitive adjustable bedding and its manufacturing method

Abstract

This application discloses an intelligent pressure-sensitive adjustable bedding and its manufacturing method, belonging to the field of bedding technology. An intelligent pressure-sensitive adjustable bedding includes an inner pad, an inflation / deflation assembly, and a fixing base. The inner pad and the inflation / deflation assembly are connected and both are housed in the fixing base. The inner pad has several first slots and several second slots, with the second slots symmetrically distributed on both sides of the first slots. A first airbag is disposed in the first slot, and a second airbag is disposed in the second slot. Both the first and second airbags are connected to the inflation / deflation assembly. The inner pad includes a latex core and a waterproof and flame-retardant sleeve, with the waterproof and flame-retardant sleeve covering the outside of the latex core, which is made of antibacterial material. This intelligent pressure-sensitive adjustable bedding not only provides good support but also offers adjustable support firmness, making it suitable for all ages. It also boasts excellent flame-retardant properties and antibacterial effects, offering diverse functions to meet people's usage needs.

Description

Technical Field

[0001] This application relates to an intelligent pressure-sensitive adjustable bedding and its manufacturing method, belonging to the field of bedding technology. Background Technology

[0002] A mattress is an item placed between the human body and a bed to ensure that consumers get healthy and comfortable sleep. There are many types of mattresses, and mattresses made of different materials can bring different sleep effects. Among them, air mattresses are a type of mattress, which are very comfortable to sleep on and easy to carry and move. Chinese patent CN217429633U discloses an airbag mattress, including a mattress body (1), a supporting airbag (2), an inflation and deflation system (3), an air passage pipe (4) connecting the inflation and deflation system (3) and the supporting airbag (2), and an air tube fixing mechanism (5) installed on the mattress body (1). The air tube fixing mechanism (5) is provided with an insertion space (501) for the air passage pipe (4) to be inserted to prevent the air passage pipe (4) from detaching from the air tube fixing mechanism (5). However, this airbag mattress has poor breathability and no specific structural support, making it unsuitable for the elderly and children. Moreover, it is very troublesome to repair once it is damaged. In addition, this airbag mattress cannot provide precise support for different parts of the human body, resulting in poor comfort.

[0003] Natural latex is increasingly used in modern homes due to its high elasticity, excellent flexural strength, shock resistance, and creep resistance, as well as its natural, harmless, biodegradable, and environmentally friendly characteristics. However, it is not fire-resistant, and if a fire breaks out indoors, a latex mattress can exacerbate the fire. Furthermore, with prolonged use, various bacteria will accumulate on the surface and inside natural latex products (such as bedding), threatening people's health and affecting their home life. Summary of the Invention

[0004] To address the aforementioned issues, an intelligent pressure-sensitive adjustable bedding system and its manufacturing method are provided. This system not only provides excellent support but also offers adjustable firmness, making it suitable for all ages. Furthermore, it boasts superior flame-retardant properties and antibacterial effects, offering diverse functions to meet various user needs.

[0005] The specific technical solution provided by this invention is as follows:

[0006] According to one aspect of this application, an intelligent pressure-sensitive adjustable bedding is provided, including an inner pad, an inflation / deflation assembly, and a fixing base. The inner pad and the inflation / deflation assembly are connected and both are disposed in the fixing base. The inner pad has a plurality of first slots and a plurality of second slots. The second slots are symmetrically distributed on both sides of the first slots. A first airbag is disposed in the first slot and a second airbag is disposed in the second slot. The inflation / deflation assembly includes an air pump and a fiber sensor. Both the first airbag and the second airbag are connected to the fiber sensor.

[0007] The inner pad includes a latex inner core and a waterproof and flame-retardant sleeve, the waterproof and flame-retardant sleeve being wrapped around the outside of the latex inner core, and the latex inner core being made of antibacterial material;

[0008] The method of using the intelligent pressure-sensitive adjustable bedding includes:

[0009] The system receives pressure data from fiber sensors in real time and converts the pressure data into a pressure matrix; it then analyzes and calculates the pressure matrix to determine the current user's posture.

[0010] The pressure matrix is ​​divided into regions based on the current user's posture, and the pressure balance value of each region is calculated.

[0011] The air pump is controlled to inflate or deflate the first or second airbag in each zone. After the error between the pressure value corresponding to each first or second airbag and the pressure balance value enters the error allowable range, the corresponding gas change is obtained.

[0012] Optionally, the inflation / deflation assembly further includes a solenoid valve, and the air pump, the solenoid valve, and the fiber sensor are connected in sequence.

[0013] According to another aspect of this application, a method for manufacturing the aforementioned intelligent pressure-sensitive adjustable bedding is provided, the specific steps of which include:

[0014] (1) Place the first airbag and the second airbag in the first slot and the second slot respectively, and then wrap the waterproof and flame-retardant sleeve around the outside of the latex inner core.

[0015] (2) Connect the air pump, solenoid valve and fiber sensor in sequence through the air tube, and then place the air pump at the end of the fixed base;

[0016] (3) Pass the fiber sensor through the waterproof and flame-retardant sleeve and the latex inner core from bottom to top, and connect it to the first airbag and the second airbag respectively. Then fill the remaining space of the fixed seat with the inner pad to obtain the intelligent pressure-sensitive adjustable bedding.

[0017] Optionally, the method for preparing the waterproof and flame-retardant sleeve includes the following steps:

[0018] (1) Dissolve sebacic acid in 50-70% ethanol solution, add aluminum hydroxide, and reflux at 70-90℃ for 6-10h. Filter, wash and dry to obtain the product.

[0019] (2) The product obtained in step (1), polylactide and antimony trioxide are mixed and pre-polymerized under vacuum of 0.03-0.07 MPa and temperature of 235-275℃ for 20-40 min; then polycondensation is carried out under temperature of 270-280℃ and vacuum of 0.006-0.01 MPa for 2-4 h to obtain a copolyester solution;

[0020] (3) Place the cotton fabric in a solution containing 3-7% crosslinking agent EH, with a bath ratio of 1:(25-40), dip and nibble twice, then dip it in the copolyester solution obtained in step (2), dip and nibble twice, with a liquid content of 60-80%, dry it at 60-80℃, and bake it at 100-120℃ for 2-5 minutes; finally, spray the fluorine-free waterproofing agent evenly on the surface of the cotton fabric, and after drying, you will get a waterproof and flame-retardant cover.

[0021] Optionally, the molecular weight of the copolyester solution is 30,000-100,000.

[0022] Optionally, the mass ratio of sebacic acid to aluminum hydroxide is 1:(1.8-2.5);

[0023] The mass ratio of the product, polylactide, and antimony trioxide is (100-300):(180-320):1;

[0024] The fluorine-free waterproofing agent is either ECO or HG-ST, and its concentration is 30–60 g / L.

[0025] Optionally, the latex core comprises the following components in parts by weight: 100-120 parts natural latex, 2-10 parts potassium castor oleate, 2-8 parts potassium oleate, 2-10 parts sulfur, 1-5 parts potassium pyrophosphate, 2-3 parts phosphorous acid antioxidant, 2-10 parts vulcanization accelerator, 2-6 parts zinc oxide activator, and 5-12 parts ion-doped antibacterial agent.

[0026] Optionally, the preparation method of the ion-doped antibacterial agent includes the following steps:

[0027] Tetraethyl orthosilicate, anhydrous ethanol, and nitric acid are mixed uniformly in a mass ratio of 1:(3-5):(0.05-0.08) and stirred at 25-35℃ for 3-5 hours to obtain a silica sol. Then, silver nitrate, zinc nitrate, citric acid, and nitric acid are dissolved in anhydrous ethanol and added dropwise to the silica sol. The mixture is stirred for 2-4 hours in the dark to obtain an ion-doped antibacterial agent.

[0028] 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);

[0029] The amounts of silver nitrate and zinc nitrate added are both 0.8-2 wt% of tetraethyl orthosilicate.

[0030] Optionally, the method for preparing the latex core includes the following steps:

[0031] (1) Mix natural latex, potassium castor oil, potassium oleate, sulfur, potassium pyrophosphate and phosphorous acid antioxidant evenly, add vulcanization accelerator and continue stirring for 8-12 hours to mature, then add activator zinc oxide and ion-doped antibacterial agent and continue stirring for 0.5-2 hours to obtain premixed rubber material;

[0032] (2) Add sodium fluorosilicate to the premixed rubber compound and stir to foam under nitrogen purging. Then gelatinize and solidify under high temperature steam at 110-130℃, demold, and obtain the product.

[0033] (3) After washing, spin-drying and drying the product, cut and process it to obtain the latex core.

[0034] Optionally, the method further includes the step of embedding a control box in a mounting base, the control box being connected to an air pump, a solenoid valve, and a fiber sensor.

[0035] The beneficial effects of this application include, but are not limited to:

[0036] 1. The intelligent pressure-sensitive adjustable bedding of this application, through the combination of an inner pad and a first and second airbag, not only provides excellent support but also allows for adjustable firmness. Furthermore, the separate arrangement of the first and second airbags enables precise control of pressure on different areas of the body, improving comfort and facilitating the repair or replacement of damaged airbags without affecting the normal use of other airbags. In addition, the bedding exhibits excellent waterproof, flame-retardant, and antibacterial properties, enhancing comfort, safety, and health, and meeting diverse user needs.

[0037] 2. In the intelligent pressure-sensitive adjustable bedding of this application, aluminum hydroxide is surface-modified with sebacic acid to improve its surface activity, dispersibility, and flame retardancy, while ensuring environmental friendliness and pollution-free operation. 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 is thermally decomposed at high temperatures, the protective layer can effectively prevent further thermal decomposition of the matrix and delay 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, further improving the mechanical properties of the fabric. Compared with fluorinated waterproofing agents, fluorinated waterproofing agents can not only increase the contact angle of the fabric surface, significantly improving the waterproof and washable properties of the fabric, but also conform to ecological principles and improve safety in use.

[0038] 3. In the intelligent pressure-sensitive adjustable bedding of this application, 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 huge specific surface area and extremely high surface activity of silica sol provide antibacterial ions (Ag) + Zn 2+ Sufficient contact with bacteria creates favorable conditions; by fixing silver and zinc on the surface of silica sol, the resulting ion-doped antibacterial agent possesses both the potency and persistence of organic antibacterial agents and the safety and heat resistance of inorganic antibacterial agents; after introducing the ion-doped antibacterial agent into the latex core, not only can the broad spectrum and stability of antibacterial activity be improved, but also the antibacterial activity and antibacterial durability can be enhanced.

[0039] 4. In the intelligent pressure-sensitive adjustable bedding of this application, the latex core has the advantages of high antibacterial properties, hygiene, and strong practicality, improving people's quality of life; the batch plasticizing process enables the raw materials to reach a suitable plasticity, which helps to form uniform cells during the foaming stage, improves the dispersibility of each raw material, and enhances the appearance quality and pass rate of the vulcanized product; the synergistic cooperation of each raw material and process enables the latex core to effectively prolong the antibacterial time and efficacy, reduce or avoid bacterial infection caused by the latex core during use, and is safe, environmentally friendly, and energy-saving.

[0040] 5. The intelligent pressure-sensitive adjustable bedding of this application, by wrapping a waterproof and flame-retardant sleeve around the outer layer of the latex inner core, not only avoids the bedding from becoming damp and causing discomfort to the human body, but also prevents the airbags from generating electrical hazards during use, thus improving safety; by embedding a control box in the fixed base, it is convenient to control the amount of gas in the first and second airbags, thereby improving the comfort of the bedding; the bedding is simple to manufacture, reasonably designed, and easy to maintain in the future, and has broad application prospects. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0042] Figure 1 This is a side cross-sectional view of the intelligent pressure-sensitive adjustable bedding according to an embodiment of this application.

[0043] Figure 2 This is a structural schematic diagram of the intelligent pressure-sensitive adjustable bedding involved in the embodiments of this application.

[0044] List of components and reference numerals:

[0045] 1. Fixing base; 2. First slot; 3. Second slot; 4. First airbag; 5. Second airbag; 6. Latex inner core; 7. Waterproof and flame-retardant sleeve; 8. Air pump; 9. Solenoid valve; 10. Fiber sensor; 11. Control box. Detailed Implementation

[0046] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0047] Unless otherwise specified in the examples, the procedures shall be performed under standard conditions or conditions recommended by the manufacturer. Raw materials or instruments whose manufacturers are not specified are all commercially available products.

[0048] Example 1

[0049] refer to Figure 1 and 2 This embodiment provides an intelligent pressure-sensitive adjustable bedding, including an inner pad, an inflation / deflation assembly, and a fixed base 1. The inner pad and the inflation / deflation assembly are connected and both are set in the fixed base 1, which is a reasonable layout and improves the comfort of use. The inner pad has several first slots 2 and several second slots 3. The second slots 3 are symmetrically distributed on both sides of the first slots 2. A first airbag 4 is set in the first slot 2 and a second airbag 5 is set in the second slot 3. The inflation / deflation assembly includes an air pump 8 and a fiber sensor 10. The first airbag 4 and the second airbag 5 are both connected to the fiber sensor 10, which is convenient for inflating or deflating the first airbag 4 and the second airbag 5.

[0050] The inner pad includes a latex inner core 6 and a waterproof and flame-retardant sleeve 7. The waterproof and flame-retardant sleeve 7 wraps around the outside of the latex inner core 6. The latex inner core 6 is made of antibacterial material, which improves the comfort, safety and health of use.

[0051] The usage of intelligent pressure-sensitive adjustable bedding includes:

[0052] The system receives pressure data from the fiber sensor 10 in real time and converts the pressure data into a pressure matrix; it then analyzes and calculates the pressure matrix to determine the current user's posture.

[0053] Specifically, the head and foot directions of the intelligent pressure-sensitive adjustable bedding are specified, 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 column number j of each first airbag and second airbag are marked. Then, the pressure value Aij returned 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 the complete pressure matrix is ​​obtained.

[0054] Furthermore, different adjustment levels are set for the different weight ranges borne by the first airbag 4 and the second airbag 5; different adjustment levels correspond to different inflation or deflation volumes of the first airbag 4 and the second airbag 5; the corresponding adjustment level is determined according to the weight range to which 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 the minimum pressure threshold, and the element area with a value greater than the minimum pressure threshold is determined as the pressure area, and the number of elements in the pressure area is counted as the current pressure area of ​​the bedding; the current pressure area is compared with the preset pressure area range for different posture types to determine the current user's posture type; wherein, the posture type includes sitting, supine, and lateral; supine specifically includes supine and prone, and lateral specifically includes left lateral and right lateral.

[0055] The pressure matrix is ​​divided into regions based on the current user's posture, and the pressure balance value of each region is calculated.

[0056] Specifically, based on the user's posture, the position of each part of the user's body is determined, thereby dividing the pressure area into the trunk zone, the left upper limb zone, the right upper limb zone, the left lower limb zone, and the right lower limb zone; the minimum and maximum values ​​of the element values ​​in each zone are obtained, and the average value is calculated to obtain the pressure balance value corresponding to each zone.

[0057] The control air pump inflates or deflates the first airbag 4 or the second airbag 5 in each zone. After the error between the pressure value corresponding to each first airbag 4 or the pressure balance value and the pressure balance value enters the error allowable range, the corresponding gas change is obtained.

[0058] Specifically, in the pressurized area, the first airbag 4 or the second airbag 5 corresponding to the element with a pressure balance value is slowly depressurized, and the first airbag 4 or the second airbag 5 corresponding to the element with a pressure balance value is slowly inflated; the pressure value borne by each first airbag 4 and the second airbag 5 during the inflation or depressurization process is monitored in real time, and the real-time gas change is recorded; when the error between the pressure value borne by the first airbag 4 and the second airbag 5 and the corresponding pressure balance value enters the error allowable range, the inflation or depressurization process is stopped.

[0059] Furthermore, the inflation / deflation assembly also includes a solenoid valve 9, an air pump 8, and a fiber sensor 10 connected in sequence to facilitate the acquisition of pressure signals from the first airbag 4 and the second airbag 5 and their transmission to the control box 11.

[0060] Furthermore, the first airbags 4 are arranged in a dot matrix pattern, and the second airbags 5 are arranged at equal intervals along the length of the inner pad, which makes it easier to adapt to the curves of the human body, reduce fatigue, and effectively improve the comfort of the bedding.

[0061] Specifically, a first airbag 4 is connected in sequence to a fiber sensor 10, a solenoid valve 9, and an air pump 8, and a second airbag 5 is connected in sequence to a fiber sensor 10, a solenoid valve 9, and an air pump 8, so that the height of each first airbag 4 and each second airbag 5 can be adjusted individually to provide appropriate support for different parts of the body.

[0062] Furthermore, a control box 11 is embedded in the fixed base 1. The control box 11 is connected to the air pump 8, the solenoid valve 9 and the fiber sensor 10, and is used to control the first airbag 4 and the second airbag 5 to reach a preset height.

[0063] The manufacturing method of the above-mentioned intelligent pressure-sensitive adjustable bedding includes the following specific steps:

[0064] (1) Place the first airbag 4 and the second airbag 5 into the first slot 2 and the second slot 3 respectively, and then wrap the waterproof and flame-retardant sleeve 7 around the outside of the latex inner core 6.

[0065] (2) Connect the air pump 8, solenoid valve 9 and fiber sensor 10 in sequence through the air pipe, then place the air pump 8 at the end of the fixed base 1 and embed the control box 11 on the fixed base 1, and connect it to the air pump 8, solenoid valve 9 and fiber sensor 10.

[0066] (3) Pass the fiber sensor 10 through the waterproof and flame-retardant sleeve 7 and the latex inner core 6 from bottom to top, and connect it to the first airbag 4 and the second airbag 5 respectively. Then fill the remaining space of the fixed seat 1 with the inner pad to obtain the intelligent pressure-sensitive adjustable bedding.

[0067] The working principle of the above-mentioned intelligent pressure-sensitive adjustable bedding is as follows: When the human body is in any posture on the bedding, the first airbag 4 and the second airbag 5 will present different heights after sensing the pressure. The fiber sensor 10 will transmit the pressure signals obtained from the first airbag 4 and the second airbag 5 to the control box 11. The control box 11 will control the air pump 8 to inflate or de-inflate the first airbag 4 and the second airbag 5 according to the preset program, so that the first airbag 4 and the second airbag 5 present the preset height, thereby ensuring that various parts of the body receive appropriate support, which helps to relax the body and improve the user experience.

[0068] Example 2

[0069] A method for preparing a waterproof and flame-retardant sleeve includes the following steps:

[0070] (1) Dissolve sebacic acid in 60% ethanol solution, add aluminum hydroxide, the mass ratio of sebacic acid to aluminum hydroxide is 1:2, reflux at 80℃ for 8h, filter, wash and dry to obtain the product;

[0071] (2) The product, polylactide and antimony trioxide in a mass ratio of 200:250:1 were mixed and pre-polymerized at a vacuum of 0.05 MPa and a temperature of 255 °C for 30 min; then polycondensed and stirred at a temperature of 275 °C and a vacuum of 0.008 MPa for 3 h to obtain a copolyester solution.

[0072] (3) Place the cotton fabric in a solution containing 5% crosslinking agent EH, with a bath ratio of 1:33, dip and nibble twice, then dip it in the copolyester solution obtained in step (2), dip and nibble twice, with a liquid content of 70%, dry at 70°C, and bake at 110°C for 3 minutes; finally, spray the fluorine-free waterproofing agent ECO with a concentration of 45g / L evenly on the surface of the cotton fabric, and after drying, the waterproof and flame-retardant cover is obtained.

[0073] Example 3

[0074] A method for preparing a waterproof and flame-retardant sleeve includes the following steps:

[0075] (1) Dissolve sebacic acid in 50% ethanol solution, add aluminum hydroxide, the mass ratio of sebacic acid to aluminum hydroxide is 1:1.8, reflux at 70℃ for 10h, filter, wash and dry to obtain the product;

[0076] (2) The product, polylactide and antimony trioxide in a mass ratio of 100:180:1 were mixed and pre-polymerized at a vacuum of 0.03 MPa and a temperature of 235 °C for 40 min; then polycondensed and stirred at a temperature of 270 °C and a vacuum of 0.006 MPa for 4 h to obtain a copolyester solution.

[0077] (3) Place the cotton fabric in a solution containing 3% crosslinking agent EH, with a bath ratio of 1:25, dip and nibble twice, then dip it in the copolyester solution obtained in step (2), dip and nibble twice, with a liquid content of 60%, dry at 60°C, and bake at 100°C for 5 minutes; finally, spray the fluorine-free waterproofing agent HG-ST with a concentration of 30g / L evenly on the surface of the cotton fabric, and after drying, the waterproof and flame-retardant cover is obtained.

[0078] Example 4

[0079] A method for preparing a waterproof and flame-retardant sleeve includes the following steps:

[0080] (1) Dissolve sebacic acid in 70% ethanol solution, add aluminum hydroxide, the mass ratio of sebacic acid to aluminum hydroxide is 1:2.5, reflux at 90℃ for 6h, filter, wash and dry to obtain the product;

[0081] (2) The product, polylactide and antimony trioxide in a mass ratio of 300:320:1 were mixed and pre-polymerized at a vacuum of 0.07 MPa and a temperature of 275 °C for 20 min; then polycondensed and stirred at a temperature of 280 °C and a vacuum of 0.01 MPa for 2 h to obtain a copolyester solution.

[0082] (3) Place the cotton fabric in a solution containing 7% crosslinking agent EH, with a bath ratio of 1:40, dip and nibble twice, then dip it in the copolyester solution obtained in step (2), dip and nibble twice, with a liquid retention rate of 80%, dry at 80°C, and bake at 120°C for 2 minutes; finally, spray the 60g / L fluorine-free waterproofing agent ECO evenly on the surface of the cotton fabric, and after drying, the waterproof and flame-retardant cover is obtained.

[0083] Comparative Example 1

[0084] The difference from Example 2 is that sebacic acid is replaced with succinic acid.

[0085] Comparative Example 2

[0086] The difference from Example 2 is that polylactide is replaced with polypropylene.

[0087] Comparative Example 3

[0088] The difference from Example 2 is that the mass ratio of sebacic acid to aluminum hydroxide is 1:0.5.

[0089] Comparative Example 4

[0090] The difference from Example 2 is that the mass ratio of the product, polylactide, and antimony trioxide is 400:400:1.

[0091] Comparative Example 5

[0092] The difference from Example 2 is that the concentration of the fluorine-free waterproofing agent is 10 g / L.

[0093] The performance of the waterproof and flame-retardant sleeves obtained in Examples 2-4 and Comparative Examples 1-5 was tested, and the results are shown in Table 1.

[0094] Vertical burning test: The waterproof and flame-retardant sleeves obtained in Examples 2-4 and Comparative Examples 1-5 were tested using a vertical burning tester in accordance with ASTM D 3801 standard.

[0095] Limiting oxygen index test: The waterproof and flame-retardant sleeves obtained in Examples 2-4 and Comparative Examples 1-5 were tested using an oxygen index meter in accordance with ASTM D 2863-2009 standard.

[0096] Hydrophobicity test: The surface wettability of the waterproof and flame-retardant sleeves obtained in Examples 2-4 and Comparative Examples 1-5 was tested using an optical contact angle tester, and the corresponding contact angles were recorded.

[0097] Table 1

[0098] Flame retardant rating (UL-94) Oxygen index (%) Contact angle (°) Example 2 V-0 36.4 148.6 Example 3 V-0 35.2 146.5 Example 4 V-0 35.7 147.2 Comparative Example 1 V-1 24.4 148.6 Comparative Example 2 V-1 25.1 148.6 Comparative Example 3 V-2 19.6 148.6 Comparative Example 4 V-1 20.8 148.6 Comparative Example 5 V-0 36.4 121.4

[0099] As can be seen from the test results in Table 1, the waterproof and flame-retardant sleeve prepared by the present invention achieves 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°, demonstrating excellent flame-retardant and waterproof properties.

[0100] Example 5

[0101] A method for preparing a latex core includes the following steps:

[0102] (1) By weight, 110 parts of natural latex, 6 parts of potassium castor oil, 5 parts of potassium oleate, 6 parts of sulfur, 3 parts of potassium pyrophosphate and 2.5 parts of phosphorous acid antioxidant are mixed evenly, 6 parts of vulcanization accelerator are added and stirring is continued for 10 hours to mature, then 4 parts of activator zinc oxide and 8 parts of ion-doped antibacterial agent are added and stirring is continued for 1.2 hours to obtain premixed rubber material;

[0103] (2) Add sodium fluorosilicate to the premixed rubber compound and stir to foam under nitrogen purging conditions. Then gelatinize and solidify under high temperature steam at 120℃, demold, and obtain the product.

[0104] (3) After washing, spin-drying and drying the product, cut and process it to obtain the latex core;

[0105] The preparation method of the ion-doped antibacterial agent includes the following steps:

[0106] Tetraethyl orthosilicate, anhydrous ethanol, and nitric acid were uniformly mixed at a mass ratio of 1:4:0.06 and stirred at 30°C for 4 hours to obtain a silica sol. Then, silver nitrate, zinc nitrate, citric acid, and nitric acid were dissolved in anhydrous ethanol at a mass ratio of 0.8:0.6:1:0.05 and added dropwise to the silica sol. The amount of silver nitrate added was 1.4 wt% of tetraethyl orthosilicate, and the amount of zinc nitrate added was 1.1 wt% of tetraethyl orthosilicate. The mixture was stirred for another 3 hours in the dark to obtain an ion-doped antibacterial agent.

[0107] Example 6

[0108] A method for preparing a latex core includes the following steps:

[0109] (1) By weight, mix 100 parts of natural latex, 2 parts of potassium castor oil, 2 parts of potassium oleate, 2 parts of sulfur, 1 part of potassium pyrophosphate and 2 parts of phosphorous antioxidant evenly, add 2 parts of vulcanization accelerator and continue stirring for 8 hours to mature, then add 2 parts of activator zinc oxide and 5 parts of ion-doped antibacterial agent and continue stirring for 0.5 hours to obtain premixed rubber material;

[0110] (2) Add sodium fluorosilicate to the premixed rubber compound and stir to foam under nitrogen purging conditions. Then gel and solidify under high temperature steam at 110℃, demold, and obtain the product.

[0111] (3) After washing, spin-drying and drying the product, cut and process it to obtain the latex core;

[0112] The preparation method of the ion-doped antibacterial agent includes the following steps:

[0113] Tetraethyl orthosilicate, anhydrous ethanol, and nitric acid were uniformly mixed in a mass ratio of 1:3:0.05 and stirred at 25°C for 5 hours to obtain a silica sol. Then, silver nitrate, zinc nitrate, citric acid, and nitric acid were dissolved in anhydrous ethanol in a mass ratio of 0.5:0.5:1:0.04 and added dropwise to the silica sol. The amount of silver nitrate added was 0.8 wt% of tetraethyl orthosilicate, and the amount of zinc nitrate added was 0.8 wt% of tetraethyl orthosilicate. The mixture was stirred for another 2 hours in the dark to obtain an ion-doped antibacterial agent.

[0114] Example 7

[0115] A method for preparing a latex core includes the following steps:

[0116] (1) By weight, mix 120 parts of natural latex, 10 parts of potassium castor oil, 8 parts of potassium oleate, 10 parts of sulfur, 5 parts of potassium pyrophosphate and 3 parts of phosphorous acid antioxidant evenly, add 10 parts of vulcanization accelerator and continue stirring for 12 hours to mature, then add 6 parts of activator zinc oxide and 12 parts of ion-doped antibacterial agent and continue stirring for 2 hours to obtain premixed rubber material;

[0117] (2) Add sodium fluorosilicate to the premixed rubber compound and stir to make foam under nitrogen filling conditions. Then gel and solidify under high temperature steam at 130℃, demold, and obtain the product.

[0118] (3) After washing, spin-drying and drying the product, cut and process it to obtain the latex core;

[0119] The preparation method of the ion-doped antibacterial agent includes the following steps:

[0120] Tetraethyl orthosilicate, anhydrous ethanol, and nitric acid were uniformly mixed at a mass ratio of 1:5:0.08 and stirred at 35°C for 3 hours to obtain a silica sol. Then, silver nitrate, zinc nitrate, citric acid, and nitric acid were dissolved in anhydrous ethanol at a mass ratio of 1:0.8:1:0.06 and added dropwise to the silica sol. The amount of silver nitrate added was 2 wt% of tetraethyl orthosilicate, and the amount of zinc nitrate added was 1.6 wt% of tetraethyl orthosilicate. The mixture was stirred for another 4 hours in the dark to obtain an ion-doped antibacterial agent.

[0121] Comparative Example 6

[0122] The difference from Example 5 is that zinc nitrate is replaced with copper nitrate.

[0123] Comparative Example 7

[0124] The difference from Example 5 is that zinc nitrate was not added.

[0125] Comparative Example 8

[0126] The difference from Example 5 is that the mass ratio of silver nitrate, zinc nitrate, citric acid and nitric acid is 0.1:1.5:1:0.01.

[0127] Comparative Example 9

[0128] The difference from Example 5 is that the preparation method of the ion-doped antibacterial agent includes the following steps:

[0129] Silver nitrate, zinc nitrate, citric acid, and nitric acid were dissolved in anhydrous ethanol at a mass ratio of 0.8:0.6:1:0.05 and stirred in the dark for 3 hours to obtain an ion-doped antibacterial agent.

[0130] Comparative Example 10

[0131] The difference from Example 5 is that: (1) 110 parts of natural latex, 6 parts of potassium castor oil, 5 parts of potassium oleate, 6 parts of sulfur, 3 parts of potassium pyrophosphate, 2.5 parts of phosphorous acid antioxidant, 6 parts of vulcanization accelerator, 4 parts of activator zinc oxide and 8 parts of ion-doped antibacterial agent are mixed evenly to obtain a premixed rubber compound.

[0132] According to the method of GB / T 20944.3-2008, the antibacterial rate of the latex cores obtained in Examples 5-7 and Comparative Examples 6-10 was tested using Escherichia coli and Staphylococcus aureus. The results are shown in Table 2.

[0133] Table 2

[0134]

[0135] As can be seen from 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 indicates that the latex cores provided by the present invention have the advantages of high antibacterial properties, hygiene, and strong practicality, reducing or avoiding bacterial infections caused by latex cores during use, and improving people's quality of life.

[0136] The above description is merely an embodiment of this application, and the scope of protection of this application is not limited to these specific embodiments, but is determined by the claims of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the technical concept and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for making an intelligent pressure-adjustable bedding, characterized in that, The intelligent pressure-sensitive adjustable bedding includes an inner pad, an inflation / deflation assembly, and a fixing base. The inner pad and the inflation / deflation assembly are connected and both are disposed in the fixing base. The inner pad has several first slots and several second slots. The second slots are symmetrically distributed on both sides of the first slots. A first airbag is disposed in the first slot and a second airbag is disposed in the second slot. The inflation / deflation assembly includes an air pump and a fiber sensor. Both the first airbag and the second airbag are connected to the fiber sensor. The inner pad includes a latex inner core and a waterproof and flame-retardant sleeve, the waterproof and flame-retardant sleeve being wrapped around the outside of the latex inner core, and the latex inner core being made of antibacterial material; The method of using the intelligent pressure-sensitive adjustable bedding includes: The system receives pressure data from fiber sensors in real time and converts the pressure data into a pressure matrix; it then analyzes and calculates the pressure matrix to determine the current user's posture. The pressure matrix is ​​divided into regions based on the current user's posture, and the pressure balance value of each region is calculated. The air pump is controlled to inflate or deflate the first or second airbag in each zone. After the error between the pressure value corresponding to each first or second airbag and the pressure balance value enters the error allowable range, the corresponding gas change is obtained. The inflation / deflation assembly also includes a solenoid valve, and the air pump, the solenoid valve, and the fiber sensor are connected in sequence. The manufacturing method of the intelligent pressure-sensitive adjustable bedding includes the following specific steps: (1) Place the first airbag and the second airbag in the first slot and the second slot respectively, and then wrap the waterproof and flame-retardant sleeve around the outside of the latex inner core. (2) Connect the air pump, solenoid valve and fiber sensor in sequence through the air tube, and then place the air pump at the end of the fixed base; (3) Pass the fiber sensor through the waterproof and flame-retardant sleeve and the latex inner core from bottom to top, and connect it to the first airbag and the second airbag respectively. Then fill the remaining space of the fixed seat with the inner pad to obtain the intelligent pressure-sensitive adjustable bedding. The preparation method of the waterproof and flame-retardant sleeve includes the following steps: (1) Dissolve sebacic acid in 50-70% ethanol solution, add aluminum hydroxide, and reflux at 70-90℃ for 6-10h. Filter, wash and dry to obtain the product. (2) The product obtained in step (1), polylactide and antimony trioxide are mixed and pre-polymerized under vacuum of 0.03-0.07 MPa and temperature of 235-275℃ for 20-40 min; then polycondensation is carried out under temperature of 270-280℃ and vacuum of 0.006-0.01 MPa for 2-4 h to obtain a copolyester solution; (3) Place the cotton fabric in a solution containing 3-7% crosslinking agent EH, with a bath ratio of 1:(25-40), dip and nibble twice, then dip it in the copolyester solution obtained in step (2), dip and nibble twice, with a liquid content of 60-80%, dry it at 60-80℃, and bake it at 100-120℃ for 2-5 minutes; finally, spray the fluorine-free waterproofing agent evenly on the surface of the cotton fabric, and after drying, you will get a waterproof and flame-retardant cover.

2. The method of claim 1, wherein the smart pressure- adjusting bedding is manufactured by the steps of: 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; The fluorine-free waterproofing agent is either ECO or HG-ST, and its concentration is 30–60 g / L.

3. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 1, characterized in that, The latex core comprises the following components in parts by weight: 100-120 parts natural latex, 2-10 parts potassium castor oil, 2-8 parts potassium oleate, 2-10 parts sulfur, 1-5 parts potassium pyrophosphate, 2-3 parts phosphorous acid antioxidant, 2-10 parts vulcanization accelerator, 2-6 parts zinc oxide activator, and 5-12 parts ion-doped antibacterial agent.

4. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 3, characterized in that, The preparation method of the ion-doped antibacterial agent includes the following steps: Tetraethyl orthosilicate, anhydrous ethanol, and nitric acid are mixed uniformly in a mass ratio of 1:(3-5):(0.05-0.08) and stirred at 25-35℃ for 3-5 hours to obtain a silica sol. Then, silver nitrate, zinc nitrate, citric acid, and nitric acid are dissolved in anhydrous ethanol and added dropwise to the silica sol. The mixture is stirred for 2-4 hours in the dark to obtain an ion-doped antibacterial agent.

5. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 4, characterized in that, 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). The amounts of silver nitrate and zinc nitrate added are both 0.8-2 wt% of tetraethyl orthosilicate.

6. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 5, characterized in that, The method for preparing the latex core includes the following steps: (1) Mix natural latex, potassium castor oil, potassium oleate, sulfur, potassium pyrophosphate and phosphorous acid antioxidant evenly, add vulcanization accelerator and continue stirring for 8-12 hours to mature, then add activator zinc oxide and ion-doped antibacterial agent and continue stirring for 0.5-2 hours to obtain premixed rubber material; (2) Add sodium fluorosilicate to the premixed rubber compound and stir to foam under nitrogen purging. Then gelatinize and solidify under high temperature steam at 110-130℃, demold, and obtain the product. (3) After washing, spin-drying and drying the product, cut and process it to obtain the latex core.

7. The method for manufacturing the intelligent pressure-sensitive adjustable bedding according to claim 1, characterized in that, It also includes the step of embedding a control box in a mounting base, the control box being connected to an air pump, a solenoid valve, and a fiber sensor.

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