Mattress material based on natural mineral crystals, and preparation method therefor

Abstract

The present invention belongs to the technical field of crystal materials. Provided are a mattress material based on natural mineral crystals, and a preparation method therefor. A porous photocatalytic crystal material is prepared by means of a sol-gel reaction; magnetic ferrosoferric oxide is deposited on the surface thereof; after undergoing modification with a silane coupling agent, the porous photocatalytic crystal material has copper oxide, manganese oxide and rare-earth oxide attached thereto, then same is calcined, and added into a chitosan-gelatin hydrogel; acrylamide, an initiator and a cross-linking agent are added thereto; and the mixture is heated and stirred to undergo a reaction and is subjected to photocuring, so as to obtain a mattress material based on natural mineral crystals. The mattress material based on natural mineral crystals prepared in the present invention has a low cost; can regulate body temperature and humidity during sleep; has good comfort, good antibacterial, insect-resistant and anti-mite performance, and good durability; and can emit far-infrared waves and generate a magnetic field and generate negative ions, so as to improve human health and purify environmental gases, thus being popular with consumers.

Description

A mattress material based on natural mineral crystal and a preparation method thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of water crystal materials, in particular to a mattress material based on natural mineral crystal and a preparation method thereof. BACKGROUND

[0002] With the continuous improvement of living standards, people pay more and more attention to health, safety and healthy products. Due to the acceleration of people's life pace, the life pressure is relatively large, and more and more people are in a sub-health state. However, due to the large life pressure, work and life occupy a lot of time and there is no spare time to maintain and regulate the body, so a product that can regulate the body health without occupying the spare time is loved by more and more people, and if the mattress used during sleep can regulate the human health, it becomes the first choice product.

[0003] Natural water crystal is a quartz crystal mineral, and its main chemical component is silicon dioxide, with a chemical formula of SiO2, and an alias of water crystal, water jade and water jade. Well-developed single crystals are hexagonal pyramids, so they are usually in the form of block or granular aggregates. Natural water crystal can affect human health by generating electromagnetic field and regulating human energy field, which is called "mineral therapy". In addition, natural water crystal can collect negative ions from the outside and release them into the surrounding environment, thereby improving indoor air quality and relieving headache, insomnia and other symptoms.

[0004] However, directly adding natural water crystal into the mattress cannot play a good role in regulating health, therefore, it needs to be modified. SUMMARY

[0005] The purpose of the present application is to provide a mattress material based on natural mineral crystal and a preparation method thereof, which has low cost, can regulate sleep temperature and humidity, has good comfort, good antibacterial, insect and mite resistance, good durability, emits far infrared waves and generates a magnetic field, generates negative ions to improve human health, purifies environmental gas, and is deeply loved by consumers.

[0006] The technical solution of the present application is as follows:

[0007] The present application provides a preparation method of a mattress material based on natural mineral crystal. A porous photocatalytic water crystal material is prepared by sol-gel reaction, a magnetic ferroferric oxide is deposited on the surface, modified by a silane coupling agent, attached with copper oxide, manganese oxide and rare earth oxides, calcined, added into a chitosan-gelatin hydrogel, added with acrylamide, added with an initiator and a crosslinking agent, heated and stirred to react, photocured, and a mattress material based on natural mineral crystal is prepared.

[0008] As a further improvement of the present application, the following steps are included:

[0009] S1. Preparation of porous photocatalytic crystal material: The natural mineral crystal is ball milled and sieved, added into ethanol, added with alkyl silicate, tetrabutyl titanate, pore-forming agent and thiourea, stirred and mixed uniformly, added with ammonia solution dropwise, stirred and reacted, centrifuged, washed, ball milled, calcined, and the porous photocatalytic crystal material is prepared;

[0010] S2. Deposition of magnetic particles: The porous photocatalytic crystal material prepared in step S1 is added into water, added with ferric chloride and ferrous chloride, stirred and mixed uniformly, added with ammonia water dropwise, stirred and reacted, aged, filtered, washed, and dried, and the magnetic porous photocatalytic crystal material is prepared;

[0011] S3. Attachment of ceramic powder: The magnetic porous photocatalytic crystal material prepared in step S2, copper oxide powder, manganese oxide powder, and rare earth oxide are mixed uniformly, calcined, ball milled, sieved, and the ceramic magnetic crystal powder is prepared;

[0012] S4. Preparation of modified powder: The ceramic magnetic crystal powder prepared in step S2 is added into ethanol, added with composite silane coupling agent, heated and stirred to react, filtered, washed, and dried, and the modified powder is prepared;

[0013] S5. Preparation of mattress material based on natural mineral crystal: Carboxymethyl chitosan is dissolved in water, added with gelatin and the modified powder prepared in step S4, stirred and mixed uniformly, added with acrylamide, stirred and mixed uniformly, added with initiator and crosslinking agent, heated and stirred to react under inert gas protection, poured into a mold, and ultraviolet light is cured, and the mattress material based on natural mineral crystal is prepared.

[0014] As a further improvement of the present application, the mesh size of the sieve in step S1 is 150-200 mesh, the mass ratio of the natural mineral crystal, alkyl silicate, tetrabutyl titanate, pore-forming agent, thiourea, ammonia water is 15-20:7-10:4-7:0.5-1:0.2-0.3:12-15, the concentration of the ammonia water is 10-15wt%, the stirring and reaction time is 1-3h, the ball milling time is 1-2h, the calcination temperature is 550-650℃, and the time is 1-3h, and the pore-forming agent is at least one of cetyltrimethylammonium chloride, cetyltrimethylammonium sodium chloride, cetyl dimethyl benzyl ammonium chloride, and cetyl dimethyl benzyl ammonium sodium chloride.

[0015] As a further improvement of the present application, the mass ratio of the porous photocatalytic crystal material, ferric chloride, ferrous chloride and ammonia water in step S2 is 30-50:6.4-6.5:2.4-2.6:4-6, the concentration of the ammonia water is 25-30wt%, the temperature of the stirring reaction is 65-75℃, the time is 3-5h, and the aging time is 1-2h.

[0016] As a further improvement of the present application, the mass ratio of the magnetic porous photocatalytic crystal material, copper oxide powder, manganese oxide powder and rare earth oxide in step S3 is 50:3-5:2-4:1-2, the temperature of the calcination is 1200-1300℃, the time is 30-40min, the time of the ball milling is 1-2h, and the rare earth oxide includes yttrium oxide and lanthanum oxide with a mass ratio of 2-4:3-5.

[0017] As a further improvement of the present application, the mass ratio of the ceramic magnetic crystal powder and the composite silane coupling agent in step S4 is 100:15-17, the composite silane coupling agent is selected from at least one of KH550, KH560, KH570, A151, A171, KH580, KH590, KH602 and KH792, preferably a mixture of KH570 and KH560 with a mass ratio of 7-10:4-7, the temperature of the heating and stirring reaction is 40-50℃, and the time is 1-3h.

[0018] As a further improvement of the present application, the mass ratio of the carboxymethyl chitosan, gelatin, modified powder, acrylamide, initiator and crosslinking agent in step S5 is 12-15:8-10:10-12:13-18:0.1-0.2:1-2, the initiator is selected from at least one of sodium persulfate, potassium persulfate and ammonium persulfate, the crosslinking agent is N,N’-methylene bisacrylamide, the temperature of the heating and stirring reaction is 50-60℃, the time is 3-5h, and the curing time is 1-2h.

[0019] As a further improvement of the present application, it specifically comprises the following steps:

[0020] S1. Preparation of the porous photocatalytic crystal material: 15-20 parts by weight of natural mineral crystal is ball milled and passed through a 150-200 mesh sieve, added into ethanol, 7-10 parts by weight of alkyl silicate, 4-7 parts by weight of tetrabutyl titanate, 0.5-1 part by weight of pore former and 0.2-0.3 part by weight of thiourea are added, stirred and mixed uniformly, 12-15 parts by weight of 10-15wt% ammonia water solution is added dropwise, stirred and reacted for 1-3h, centrifuged, washed, ball milled for 1-2h, and calcined at 550-650℃ for 1-3h to obtain the porous photocatalytic crystal material;

[0021] S2. Deposition of magnetic particles: 30-50 parts by weight of the porous photocatalytic crystal material prepared in step S1 is added to 200 parts by weight of water, 6.4-6.5 parts by weight of ferric chloride and 2.4-2.6 parts by weight of ferrous chloride are added, the mixture is stirred and mixed uniformly, 4-6 parts by weight of 25-30 wt% ammonia water is added dropwise, stirring is carried out at 65-75℃ for 3-5 h, aging is carried out for 1-2 h, filtration, washing and drying are carried out, and a magnetic porous photocatalytic crystal material is prepared;

[0022] S3. Attachment of ceramic powder: 50 parts by weight of the magnetic porous photocatalytic crystal material prepared in step S2, 3-5 parts by weight of copper oxide powder, 2-4 parts by weight of manganese oxide powder and 1-2 parts by weight of rare earth oxide are uniformly mixed, calcination is carried out at 1200-1300℃ for 30-40 min, ball milling is carried out for 1-2 h, and sieving is carried out, and a ceramic magnetic crystal powder is prepared.

[0023] The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 2-4:3-5;

[0024] S4. Preparation of modified powder: 100 parts by weight of the ceramic magnetic crystal powder prepared in step S3 is added to 500 parts by weight of ethanol, 15-17 parts by weight of a composite silane coupling agent is added, heating is carried out to 40-50℃, stirring is carried out for 1-3 h, filtration, washing and drying are carried out, and a modified powder is prepared.

[0025] The composite silane coupling agent is a mixture of KH570 and KH560, and the mass ratio is 7-10:4-7;

[0026] S5. Preparation of a mattress material based on natural mineral crystal: 12-15 parts by weight of carboxymethyl chitosan is dissolved in 500 parts by weight of water, 8-10 parts by weight of gelatin and 10-12 parts by weight of the modified powder prepared in step S4 are added, stirring is carried out to mix uniformly, 13-18 parts by weight of acrylamide is added, stirring is carried out to mix uniformly, 0.1-0.2 parts by weight of an initiator and 1-2 parts by weight of a crosslinking agent N,N'-methylene bisacrylamide are added, heating is carried out to 50-60℃ under inert gas protection, stirring is carried out for 3-5 h, pouring is carried out into a mold, and ultraviolet light curing is carried out for 1-2 h, and a mattress material based on natural mineral crystal is prepared.

[0027] The application further protects a mattress material based on natural mineral crystal prepared by the above preparation method.

[0028] The application further protects the use of the above mattress material based on natural mineral crystal in the preparation of a mattress.

[0029] The application has the following beneficial effects:

[0030] The application takes natural mineral crystal as a core, coats a TiO2 / SiO2 layer on the surface through a sol-gel reaction, and introduces thiourea to make the prepared TiO2 doped with S / C, so that the electron transition energy level is changed, the TiO2 can utilize visible light catalysis, and the performance of the mattress material is improved, such as antibacterial, anti-mite, air purification, adsorption of harmful gases in the air, safety and environmental protection. The natural mineral crystal can affect physical health through generating electromagnetic field, adjusting human body field, etc., which is so-called "mineral therapy". Secondly, the natural mineral crystal can collect negative ions from the outside and release them into the surrounding environment, thereby improving indoor air quality and relieving symptoms such as headache and insomnia. At the same time, the prepared porous photocatalytic crystal material has a large specific surface area and contains numerous tiny pores, which can not only regulate indoor humidity but also absorb the moisture (or sweat) released by the human body during sleep, thereby improving sleep quality.

[0031] The surface is deposited with magnetic particles and ceramic powder, wherein transition metal oxides (magnetic magnetite, copper oxide and manganese oxide) and rare earth oxides (yttrium oxide and lanthanum oxide) synergistically enhance the performance, have low raw material cost and stable performance, the magnetic magnetite can generate a magnetic field, and the combined powder can generate far infrared waves, the far infrared waves can penetrate the skin, improve blood circulation, improve metabolic function, reduce nerve excitability, relieve mild pain, improve pain caused by arthritis, muscle spasm and other diseases, activate the human immune system, improve immunity, reduce the incidence of infectious diseases, and also relieve local inflammation caused by infection, and also have the functions of promoting cell regeneration, promoting wound healing, enhancing metabolic capacity, promoting blood vessel expansion, etc.

[0032] The prepared ceramic magnetic crystal powder is modified by KH560 and KH570, so that the powder surface has double bonds and epoxy groups, the double bonds can be polymerized with acrylamide at the same time, and the epoxy groups can react with the amino groups of chitosan, thereby improving the dispersibility of the modified powder in the gel, so that the modified powder can be uniformly dispersed in the gel, and the functions of promoting crosslinking and improving mechanical properties are achieved.

[0033] The bed mattress material provided by the present application is mainly gel material, the chitosan-gelatin-polyacrylamide hydrogel has good mechanical strength and curing performance, good flexibility, good antibacterial, mite and insect removing performance, good durability, high water content, and the gel molecules in the high molecular gel can effectively absorb and discharge the heat generated in the human body to the outside of the body, then diffuse to the whole bed mattress by using the conductivity and continuously circulate, so that the human body cooling and comfortable sleeping degree and the summer cooling effect are achieved, and the heat dissipation process is slow and does not cause discomfort to the human body. The position of the internal contact of the cloth is provided with a waterproof isolation film to prevent the volatilization of the gel water, and at the same time, the gel molecules are difficult to move, so that the comfort and application effect are improved.

[0034] The bed mattress material based on natural mineral crystal prepared by the present application has low cost, can adjust the sleep body temperature and humidity, has good comfort, good antibacterial, insect and mite removing performance, good durability, emits far infrared waves and generates a magnetic field, generates negative ions to improve human health, purifies environmental gas, and is deeply loved by consumers. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0036] The natural mineral crystal is a mixed ore containing natural crystal and rare earth concentrate, and the mass ratio is 10:5. The natural crystal is purchased from Lianyungang Haisheng Quartz Technology Co., Ltd., and the rare earth concentrate is purchased from China Northern Rare Earth Group High-tech Co., Ltd.

[0037] Embodiment 1

[0038] The present embodiment provides a bed mattress material based on natural mineral crystal, which specifically comprises the following steps:

[0039] S1. Preparation of porous photocatalytic crystal material: 15g of natural mineral crystal is ball milled and then passed through a 150 mesh sieve, added into 200g of ethanol, 7g of methyl silicate, 4g of tetrabutyl titanate, 0.5g of cetyltrimethylammonium chloride and 0.2g of thiourea are added, stirred and mixed for 20min, 12g of 10wt% ammonia water solution is added dropwise, stirred and reacted for 1h, centrifuged, washed, ball milled for 1h, and calcined at 550℃ for 1h to obtain the porous photocatalytic crystal material;

[0040] S2. Deposition of magnetic particles: 30 g of the porous photocatalytic crystal material prepared in step S1 was added to 200 g of water, 6.4 g of ferric chloride and 2.4 g of ferrous chloride were added, and the mixture was stirred for 15 min. 4 g of 25 wt% ammonia water was added dropwise, and the reaction was stirred at 65°C for 3 h, aged for 1 h, filtered, washed, and dried to obtain a magnetic porous photocatalytic crystal material;

[0041] S3. Attachment of ceramic powder: 50 g of the magnetic porous photocatalytic crystal material prepared in step S2, 3 g of copper oxide powder, 2 g of manganese oxide powder, and 1 g of rare earth oxide were mixed for 15 min, calcined at 1200°C for 30 min, ball milled for 1 h, sieved, and a ceramic magnetic crystal powder was obtained;

[0042] The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 2:3;

[0043] S4. Preparation of modified powder: 100 g of the ceramic magnetic crystal powder prepared in step S3 was added to 500 g of ethanol, 15 g of a composite silane coupling agent was added, heated to 40°C, stirred for 1 h, filtered, washed, and dried to obtain a modified powder;

[0044] The composite silane coupling agent is a mixture of KH570 and KH560, and the mass ratio is 7:4;

[0045] S5. Preparation of a mattress material based on natural mineral crystal: 12 g of carboxymethyl chitosan was dissolved in 500 g of water, 8 g of gelatin and 10 g of the modified powder prepared in step S4 were added, stirred and mixed for 15 min, 13 g of acrylamide was added, stirred and mixed for 10 min, 0.1 g of potassium persulfate and 1 g of a crosslinking agent N,N'-methylene bisacrylamide were added, heated to 50°C under nitrogen protection, stirred for 3 h, poured into a mold, and ultraviolet light cured for 1 h to obtain a mattress material based on natural mineral crystal.

[0046] Example 2

[0047] The present embodiment provides a mattress material based on natural mineral crystal, which specifically comprises the following steps:

[0048] S1. Preparation of a porous photocatalytic crystal material: 20 g of natural mineral crystal was ball milled and sieved through a 200 mesh sieve, added to 200 g of ethanol, 10 g of tetraethyl orthosilicate, 7 g of tetrabutyl titanate, 1 g of sodium hexadecyl dimethyl benzyl chloride, and 0.3 g of thiourea were added, stirred and mixed for 20 min, 15 g of 15 wt% ammonia solution was added dropwise, stirred for 3 h, centrifuged, washed, ball milled for 2 h, and calcined at 650°C for 3 h to obtain a porous photocatalytic crystal material;

[0049] S2. Deposition of magnetic particles: 50 g of the porous photocatalytic crystal material prepared in step S1 was added to 200 g of water, 6.5 g of ferric chloride and 2.6 g of ferrous chloride were added, and the mixture was stirred for 15 min. 6 g of 30 wt% ammonia water was added dropwise, and the reaction was stirred at 75°C for 5 h. After aging for 2 h, the product was filtered, washed, and dried to obtain a magnetic porous photocatalytic crystal material;

[0050] S3. Attachment of ceramic powder: 50 g of the magnetic porous photocatalytic crystal material prepared in step S2, 5 g of copper oxide powder, 4 g of manganese oxide powder, and 2 g of rare earth oxide were mixed for 15 min, calcined at 1300°C for 40 min, ball-milled for 2 h, and sieved to obtain a ceramic magnetic crystal powder;

[0051] The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 4:5;

[0052] S4. Preparation of modified powder: 100 g of the ceramic magnetic crystal powder prepared in step S3 was added to 500 g of ethanol, 17 g of a composite silane coupling agent was added, heated to 50°C, and stirred for 3 h. After filtration, washing, and drying, a modified powder was obtained;

[0053] The composite silane coupling agent is a mixture of KH570 and KH560, and the mass ratio is 10:7;

[0054] S5. Preparation of a mattress material based on natural mineral crystal: 15 g of carboxymethyl chitosan was dissolved in 500 g of water, 10 g of gelatin and 12 g of the modified powder prepared in step S4 were added, stirred for 15 min, 18 g of acrylamide was added, stirred for 10 min, 0.2 g of potassium persulfate and 2 g of a crosslinking agent N,N'-methylene bisacrylamide were added, and the mixture was heated to 60°C under nitrogen protection and stirred for 5 h. After pouring into a mold and ultraviolet light curing for 2 h, a mattress material based on natural mineral crystal was obtained.

[0055] Example 3

[0056] This embodiment provides a mattress material based on natural mineral crystal, which specifically includes the following steps:

[0057] S1. Preparation of a porous photocatalytic crystal material: 17 g of natural mineral crystal was ball-milled and sieved through a 200-mesh sieve, added to 200 g of ethanol, and stirred for 20 min. 8.5 g of tetraethyl orthosilicate, 5.5 g of tetrabutyl titanate, 0.7 g of cetyltrimethylammonium chloride, and 0.25 g of thiourea were added, and the mixture was stirred for 20 min. 13.5 g of 12 wt% ammonia solution was added dropwise, and the reaction was stirred for 2 h. After centrifugation, washing, and ball-milling for 1.5 h, the product was calcined at 600°C for 2 h to obtain a porous photocatalytic crystal material;

[0058] S2. Deposition of magnetic particles: 40 g of the porous photocatalytic crystal material prepared in step S1 was added to 200 g of water, 6.45 g of ferric chloride and 2.5 g of ferrous chloride were added, and the mixture was stirred for 15 min. 5 g of 27 wt% ammonia water was added dropwise, and the reaction was stirred at 70°C for 4 h, aged for 1.5 h, filtered, washed, and dried to obtain a magnetic porous photocatalytic crystal material;

[0059] S3. Attachment of ceramic powder: 50 g of the magnetic porous photocatalytic crystal material prepared in step S2, 4 g of copper oxide powder, 3 g of manganese oxide powder, and 1.5 g of rare earth oxide were mixed for 15 min, calcined at 1250°C for 35 min, ball-milled for 1.5 h, and sieved to obtain a ceramic magnetic crystal powder;

[0060] The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 3:4;

[0061] S4. Preparation of modified powder: 100 g of the ceramic magnetic crystal powder prepared in step S3 was added to 500 g of ethanol, 16 g of a composite silane coupling agent was added, heated to 45°C, and stirred for 2 h to obtain a modified powder;

[0062] The composite silane coupling agent is a mixture of KH570 and KH560, and the mass ratio is 8:5;

[0063] S5. Preparation of a mattress material based on natural mineral crystal: 13.5 g of carboxymethyl chitosan was dissolved in 500 g of water, 9 g of gelatin and 11 g of the modified powder prepared in step S4 were added, stirred for 15 min, 15 g of acrylamide was added, stirred for 10 min, 0.15 g of sodium persulfate and 1.5 g of a crosslinking agent N,N'-methylene bisacrylamide were added, heated to 55°C under nitrogen protection, and stirred for 4 h to obtain a mattress material based on natural mineral crystal.

[0064] Example 4

[0065] Compared with example 3, the difference is that the composite silane coupling agent is replaced by a single KH570.

[0066] Example 5

[0067] Compared with example 3, the difference is that the composite silane coupling agent is replaced by a single KH560.

[0068] Example 6

[0069] Compared with example 3, the difference is that the rare earth oxide is a single yttrium oxide.

[0070] Example 7

[0071] The difference compared with Example 3 is that the rare earth oxide is single lanthanum oxide.

[0072] Comparative Example 1

[0073] The difference compared with Example 3 is that no tetraethyl orthosilicate is added in step S1.

[0074] The details are as follows:

[0075] S1. Preparation of the porous photocatalytic crystal material: 17 g of natural mineral crystal is ball milled and passed through a 200-mesh sieve, added into 200 g of ethanol, 14 g of tetrabutyl titanate, 0.7 g of cetyltrimethylammonium chloride, and 0.25 g of thiourea are added, stirred and mixed for 20 min, 13.5 g of 12 wt% ammonia water solution is added dropwise, stirred and reacted for 2 h, centrifuged, washed, ball milled for 1.5 h, and calcined at 600 ℃ for 2 h to obtain the porous photocatalytic crystal material.

[0076] Comparative Example 2

[0077] The difference compared with Example 3 is that no tetrabutyl titanate is added in step S1.

[0078] The details are as follows:

[0079] S1. Preparation of the porous crystal material: 17 g of natural mineral crystal is ball milled and passed through a 200-mesh sieve, added into 200 g of ethanol, 14 g of tetraethyl orthosilicate, 0.7 g of cetyltrimethylammonium chloride, and 0.25 g of thiourea are added, stirred and mixed for 20 min, 13.5 g of 12 wt% ammonia water solution is added dropwise, stirred and reacted for 2 h, centrifuged, washed, ball milled for 1.5 h, and calcined at 600 ℃ for 2 h to obtain the porous crystal material.

[0080] Comparative Example 3

[0081] The difference compared with Example 3 is that no thiourea is added in step S1.

[0082] The details are as follows:

[0083] S1. Preparation of the porous photocatalytic crystal material: 17 g of natural mineral crystal is ball milled and passed through a 200-mesh sieve, added into 200 g of ethanol, 8.5 g of tetraethyl orthosilicate, 5.5 g of tetrabutyl titanate, and 0.7 g of cetyltrimethylammonium chloride are added, stirred and mixed for 20 min, 13.5 g of 12 wt% ammonia water solution is added dropwise, stirred and reacted for 2 h, centrifuged, washed, ball milled for 1.5 h, and calcined at 600 ℃ for 2 h to obtain the porous photocatalytic crystal material.

[0084] Comparative Example 4

[0085] The difference compared with Example 3 is that step S2 is not performed.

[0086] Specifically as follows:

[0087] S1. Preparation of porous photocatalytic crystal material: 17 g of natural mineral crystal was ball milled and passed through a 200 mesh sieve, added into 200 g of ethanol, added with 8.5 g of tetraethyl orthosilicate, 5.5 g of tetrabutyl titanate, 0.7 g of sodium chloride hexadecyl trimethyl and 0.25 g of thiourea, stirred and mixed for 20 min, added with 13.5 g of 12 wt% ammonia water solution dropwise, stirred and reacted for 2 h, centrifuged, washed, ball milled for 1.5 h, calcined at 600 ℃ for 2 h, and the porous photocatalytic crystal material was prepared;

[0088] S2. Attachment of ceramic powder: 50 g of the porous photocatalytic crystal material prepared in step S1, 4 g of copper oxide powder and 3 g of manganese oxide powder were mixed for 15 min, calcined at 1250 ℃ for 35 min, ball milled for 1.5 h, sieved, and the ceramic crystal powder was prepared.

[0089] The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 3:4;

[0090] S3. Preparation of modified powder: 100 g of the ceramic crystal powder prepared in step S2 was added into 500 g of ethanol, added with 16 g of composite silane coupling agent, heated to 45 ℃, stirred and reacted for 2 h, filtered, washed, dried, and the modified powder was prepared.

[0091] The composite silane coupling agent is a mixture of KH570 and KH560, and the mass ratio is 8:5;

[0092] S4. Preparation of mattress material based on natural mineral crystal: 13.5 g of carboxymethyl chitosan was dissolved in 500 g of water, added with 9 g of gelatin and 11 g of the modified powder prepared in step S3, stirred and mixed for 15 min, added with 15 g of acrylamide, stirred and mixed for 10 min, added with 0.15 g of sodium persulfate and 1.5 g of crosslinking agent N,N'-methylene bisacrylamide, heated to 55 ℃ under nitrogen protection, stirred and reacted for 4 h, poured into a mold, and ultraviolet light cured for 1.5 h, and the mattress material based on natural mineral crystal was prepared.

[0093] Comparative Example 5

[0094] Compared with Example 3, the difference is that no rare earth oxide is added in step S3.

[0095] Specifically as follows:

[0096] S3. Attachment of ceramic powder: 50 g of the porous photocatalytic crystal material prepared in step S2, 4 g of copper oxide powder and 3 g of manganese oxide powder were mixed for 15 min, calcined at 1250 ℃ for 35 min, ball milled for 1.5 h, sieved, and the ceramic crystal powder was prepared.

[0097] Comparative Example 6

[0098] The difference compared with Example 3 is that step S4 is not performed.

[0099] The details are as follows:

[0100] S1. Preparation of porous photocatalytic crystal material: 17 g of natural mineral crystal was ball-milled and passed through a 200-mesh sieve, added into 200 g of ethanol, 8.5 g of tetraethyl orthosilicate, 5.5 g of tetrabutyl titanate, 0.7 g of cetyltrimethylammonium chloride and 0.25 g of thiourea were added, stirred and mixed for 20 min, 13.5 g of 12 wt% ammonia water solution was added dropwise, stirred and reacted for 2 h, centrifuged, washed, ball-milled for 1.5 h, calcined at 600 ℃ for 2 h, and the porous photocatalytic crystal material was prepared;

[0101] S2. Deposition of magnetic particles: 40 g of the porous photocatalytic crystal material prepared in step S1 was added into 200 g of water, 6.45 g of ferric chloride and 2.5 g of ferrous chloride were added, stirred and mixed for 15 min, 5 g of 27 wt% ammonia water was added dropwise, stirred and reacted at 70 ℃ for 4 h, aged for 1.5 h, filtered, washed, dried, and the magnetic porous photocatalytic crystal material was prepared;

[0102] S3. Attachment of ceramic powder: 50 g of the magnetic porous photocatalytic crystal material prepared in step S2, 4 g of copper oxide powder, 3 g of manganese oxide powder and 1.5 g of rare earth oxide were mixed for 15 min, calcined at 1250 ℃ for 35 min, ball-milled for 1.5 h, sieved, and the ceramic magnetic crystal powder was prepared;

[0103] The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 3:4;

[0104] S4. Preparation of mattress material based on natural mineral crystal: 13.5 g of carboxymethyl chitosan was dissolved in 500 g of water, 9 g of gelatin and 11 g of the ceramic magnetic crystal powder prepared in step S3 were added, stirred and mixed for 15 min, 15 g of acrylamide was added, stirred and mixed for 10 min, 0.15 g of sodium persulfate and 1.5 g of crosslinking agent N,N'-methylenebisacrylamide were added, heated to 55 ℃ under nitrogen protection, stirred and reacted for 4 h, poured into a mold, and ultraviolet light cured for 1.5 h, and the mattress material based on natural mineral crystal was prepared.

[0105] Comparative Example 7

[0106] The difference compared with Example 3 is that carboxymethyl chitosan is not added in step S5.

[0107] The details are as follows:

[0108] S5. Preparation of the mattress material based on natural mineral crystal: 22.5 g of gelatin was dissolved in 500 g of water, 11 g of the modified powder prepared in step S4 was added, and stirred and mixed for 15 min, 15 g of acrylamide was added, and stirred and mixed for 10 min, 0.15 g of sodium persulfate and 1.5 g of the crosslinking agent N,N'-methylene bisacrylamide were added, and heated to 55 °C under nitrogen protection, and stirred and reacted for 4 h, and poured into a mold, and ultraviolet light cured for 1.5 h, to prepare the mattress material based on natural mineral crystal.

[0109] Test Example 1

[0110] The ceramic magnetic crystal powder prepared in step S3 in Examples 1-3, 6, 7 and Comparative Examples 1-5 of the present application was measured for the double-band infrared emissivity in the 3 μm-5 μm and 8 μm-14 μm bands at room temperature using an IR-2 double-band emissivity measuring instrument, and the results are shown in Table 1.

[0111] Table 1

[0112] As shown in the above table, the ceramic magnetic crystal powder prepared in Examples 1-3 of the present application has high double-band infrared emissivity in the 3 μm-5 μm and 8 μm-14 μm bands.

[0113] Test Example 2

[0114] The mattress materials based on natural mineral crystal prepared in Examples 1-7 and Comparative Examples 1-7 of the present application were tested for mechanical properties, and the results are shown in Table 2.

[0115] Table 2

[0116] As shown in the above table, the mattress materials based on natural mineral crystal prepared in Examples 1-3 of the present application have good mechanical properties.

[0117] Test Example 3

[0118] The mattress materials based on natural mineral crystal prepared in Examples 1-7 and Comparative Examples 1-7 of the present application were tested for comprehensive properties.

[0119] Air permeability test: tested according to GB / T 5453-1997 "Textiles - Determination of air permeability of fabrics". 10 pieces of 30 cm x 30 cm samples were taken for each group, and the average value was calculated. The air permeable area of the sample was 20 cm 2 , and the test pressure difference was 200 Pa.

[0120] Compression performance test: tested according to GB / T 24442.1-2009 "Textiles - Determination of compression performance - Part 1: Constant rate of extension method". 10 pieces of samples were taken for each group, and the foot area was 100 mm 2, light pressure 0.5 kPa, heavy pressure 30 kPa. Calculate the compression rate (%) and compression elasticity rate (%) of each sample.

[0121] Compression rate (%) = (light thickness - heavy thickness) / light thickness x 100%

[0122] Compression elasticity rate (%) = (recovery thickness - heavy thickness) / (light thickness - heavy thickness) x 100%

[0123] Abrasion resistance test: GB / T 21196.3-2007 "Textiles - Martindale method of test for the abrasion resistance of fabrics - Part 3: determination of mass loss" is used for testing. The load pressure is 5.82 N, the sample diameter is 38 mm, the initial friction is 100 times, and the data is recorded every 50 times thereafter until it is worn out. Calculate the abrasion resistance index.

[0124] Abrasion resistance index (times / mg) = total friction times / mass loss of the sample under the total friction times

[0125] Moisture permeability test: GB / T 12704.1-2009 "Textiles - Test methods for water vapour permeability - Part 2: evaporimeter method" is used for testing. 34 mL of water is poured into the moisture permeable cup, which is placed in the testing instrument for 1 h, the relative humidity of the test chamber is 50%, and the relative humidity in the moisture permeable cup is 100%. Test and calculate the moisture permeability of the sample.

[0126] The results are shown in Table 3.

[0127] Table 3

[0128] From the above table, it can be seen that the mattress materials based on natural mineral crystal prepared by examples 1-3 of the present application have good comprehensive performance.

[0129] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for producing a mattress material based on natural mineral crystals, characterized in that, A porous photocatalytic crystal material is prepared by a sol-gel reaction, magnetic ferroferric oxide is deposited on the surface, the porous photocatalytic crystal material is modified by a silane coupling agent, copper oxide, manganese oxide and rare earth oxides are attached, calcination is performed, chitosan-gelatin hydrogel is added, acrylamide is added, an initiator and a crosslinking agent are added, heating and stirring are performed, photocuring is performed, and a mattress material based on natural mineral crystal is prepared.

2. The production method according to claim 1, characterized by, The method comprises the following steps: S1. Preparation of a porous photocatalytic crystal material: natural mineral crystals are ball milled and sieved, added to ethanol, alkyl silicate, tetrabutyl titanate, a porogen and thiourea are added, stirred and uniformly mixed, an ammonia solution is added dropwise, stirring is performed, centrifugation is performed, washing is performed, ball milling is performed, and calcination is performed to obtain the porous photocatalytic crystal material; S2. Deposition of magnetic particles: the porous photocatalytic crystal material prepared in step S1 is added to water, iron chloride and ferrous chloride are added, stirring is performed, the mixture is uniformly mixed, ammonia is added dropwise, stirring is performed, aging is performed, filtration is performed, washing is performed, and drying is performed to obtain a magnetic porous photocatalytic crystal material; S3. Attachment of ceramic powder: the magnetic porous photocatalytic crystal material prepared in step S2, copper oxide powder, manganese oxide powder and rare earth oxides are uniformly mixed, calcination is performed, ball milling is performed, sieving is performed, and a ceramic magnetic crystal powder is obtained; S4. Preparation of modified powder: the ceramic magnetic crystal powder prepared in step S2 is added to ethanol, a composite silane coupling agent is added, heating and stirring are performed, filtration is performed, washing is performed, and drying is performed to obtain the modified powder; S5. Preparation of a mattress material based on natural mineral crystal: carboxymethyl chitosan is dissolved in water, gelatin and the modified powder prepared in step S4 are added, stirring is performed, the mixture is uniformly mixed, acrylamide is added, stirring is performed, the mixture is uniformly mixed, an initiator and a crosslinking agent are added, heating and stirring are performed under the protection of an inert gas, the mixture is poured into a mold, and ultraviolet light curing is performed to obtain the mattress material based on natural mineral crystal.

3. The preparation method according to claim 2, characterized in that, In step S1, the mesh size of the sieve is 150-200 mesh, the mass ratio of the natural mineral crystals, alkyl silicate, tetrabutyl titanate, porogen, thiourea and ammonia is 15-20:7-10:4-7:0.5-1:0.2-0.3:12-15, the concentration of the ammonia is 10-15 wt%, the stirring time is 1-3 h, the ball milling time is 1-2 h, the calcination temperature is 550-650℃, and the calcination time is 1-3 h. The porogen is at least one of cetyltrimethylammonium chloride, cetyltrimethylammonium sodium chloride, cetyl dimethyl benzyl ammonium chloride and cetyl dimethyl benzyl ammonium sodium.

4. The preparation method according to claim 2, characterized in that, In step S2, the mass ratio of the porous photocatalytic crystal material, iron chloride, ferrous chloride and ammonia is 30-50:6.4-6.5:2.4-2.6:4-6, the concentration of the ammonia is 25-30 wt%, the stirring temperature is 65-75℃, the stirring time is 3-5 h, and the aging time is 1-2 h.

5. The preparation method according to claim 2, characterized in that, The mass ratio of the magnetic porous photocatalytic crystal material, copper oxide powder, manganese oxide powder, and rare earth oxide in step S3 is 50:3-5:2-4:1-2, the calcination temperature is 1200-1300℃, the time is 30-40min, the ball milling time is 1-2h, the rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 2-4:3-5.

6. The method of claim 2, wherein, The mass ratio of the ceramic magnetic crystal powder and the composite silane coupling agent in step S4 is 100:15-17, the composite silane coupling agent is at least one selected from KH550, KH560, KH570, A151, A171, KH580, KH590, KH602, and KH792, the heating and stirring reaction temperature is 40-50℃, and the time is 1-3h.

7. The preparation method according to claim 2, characterized in that, The mass ratio of the carboxymethyl chitosan, gelatin, modified powder, acrylamide, initiator, and crosslinking agent in step S5 is 12-15:8-10:10-12:13-18:0.1-0.2:1-2, the initiator is at least one selected from sodium persulfate, potassium persulfate, and ammonium persulfate, the crosslinking agent is N,N'-methylene bisacrylamide, the heating and stirring reaction temperature is 50-60℃, the time is 3-5h, and the curing time is 1-2h.

8. The preparation method according to claim 2, characterized in that, Specifically comprising the following steps: S1. Preparation of a porous photocatalytic crystal material: 15-20 parts by weight of natural mineral crystal is ball milled and passed through a 150-200 mesh sieve, added into ethanol, 7-10 parts by weight of alkyl silicate, 4-7 parts by weight of tetrabutyl titanate, 0.5-1 part by weight of a pore former, and 0.2-0.3 part by weight of thiourea are added, stirred and mixed uniformly, 12-15 parts by weight of 10-15wt% ammonia water solution is added dropwise, stirred and reacted for 1-3h, centrifuged, washed, and ball milled for 1-2h, and calcined at 550-650℃ for 1-3h to obtain a porous photocatalytic crystal material; S2. Deposition of magnetic particles: 30-50 parts by weight of the porous photocatalytic crystal material prepared in step S1 is added into 200 parts by weight of water, 6.4-6.5 parts by weight of iron chloride and 2.4-2.6 parts by weight of ferrous chloride are added, stirred and mixed uniformly, 4-6 parts by weight of 25-30wt% ammonia water is added dropwise, stirred and reacted at 65-75℃ for 3-5h, aged for 1-2h, filtered, washed, and dried to obtain a magnetic porous photocatalytic crystal material; S3. Attachment of ceramic powder: 50 parts by weight of the magnetic porous photocatalytic crystal material prepared in step S2, 3-5 parts by weight of copper oxide powder, 2-4 parts by weight of manganese oxide powder, and 1-2 parts by weight of rare earth oxide are mixed uniformly, calcined at 1200-1300℃ for 30-40min, ball milled for 1-2h, and sieved to obtain a ceramic magnetic crystal powder; The rare earth oxide includes yttrium oxide and lanthanum oxide, and the mass ratio is 2-4:3-5; S4. Preparation of modified powder: 100 parts by weight of the ceramic magnetic crystal powder prepared in step S3 is added into 500 parts by weight of ethanol, 15-17 parts by weight of the composite silane coupling agent is added, heated to 40-50°C, stirred for 1-3 h, filtered, washed, and dried to obtain the modified powder; The composite silane coupling agent is a mixture of KH570 and KH560 with a mass ratio of 7-10:4-7; S5. Preparation of the natural mineral crystal-based mattress material: 12-15 parts by weight of carboxymethyl chitosan is dissolved in 500 parts by weight of water, 8-10 parts by weight of gelatin and 10-12 parts by weight of the modified powder prepared in step S4 are added, stirred and mixed uniformly, 13-18 parts by weight of acrylamide is added, stirred and mixed uniformly, 0.1-0.2 parts by weight of the initiator and 1-2 parts by weight of the crosslinking agent N,N'-methylene bisacrylamide are added, heated to 50-60°C under inert gas protection, stirred for 3-5 h, poured into a mold, and cured under ultraviolet light for 1-2 h to obtain the natural mineral crystal-based mattress material.

9. A natural mineral crystal-based mattress material prepared by the preparation method of any one of claims 1-8.

10. Use of the natural mineral crystal-based mattress material of claim 9 in the preparation of a mattress.

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