WO2013029203A1 - 一种担载有二氧化钛层的无机非金属矿物复合材料、其制备方法及应用 - Google Patents

一种担载有二氧化钛层的无机非金属矿物复合材料、其制备方法及应用 Download PDF

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WO2013029203A1
WO2013029203A1 PCT/CN2011/001469 CN2011001469W WO2013029203A1 WO 2013029203 A1 WO2013029203 A1 WO 2013029203A1 CN 2011001469 W CN2011001469 W CN 2011001469W WO 2013029203 A1 WO2013029203 A1 WO 2013029203A1
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Prior art keywords
titanium dioxide
composite material
layer
nano
dispersant
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PCT/CN2011/001469
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English (en)
French (fr)
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范莉
许晓峻
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上海世展化工科技有限公司
上海世景国际贸易有限公司
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Application filed by 上海世展化工科技有限公司, 上海世景国际贸易有限公司 filed Critical 上海世展化工科技有限公司
Priority to KR1020147008557A priority Critical patent/KR101599433B1/ko
Priority to PCT/CN2011/001469 priority patent/WO2013029203A1/zh
Priority to EP11871790.9A priority patent/EP2752239A4/en
Priority to US13/393,533 priority patent/US8728501B2/en
Priority to JP2014527450A priority patent/JP5893740B2/ja
Publication of WO2013029203A1 publication Critical patent/WO2013029203A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063Titanium; Oxides or hydroxides thereof
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    • B01J37/024Multiple impregnation or coating
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B01J37/03Precipitation; Co-precipitation
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    • B01J37/033Using Hydrolysis
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
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    • C01INORGANIC CHEMISTRY
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    • C01G23/00Compounds of titanium
    • C01G23/04Oxides; Hydroxides
    • C01G23/047Titanium dioxide
    • C01G23/053Producing by wet processes, e.g. hydrolysing titanium salts
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/36Compounds of titanium
    • C09C1/3607Titanium dioxide
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    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
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    • C09D7/61Additives non-macromolecular inorganic
    • C09D7/62Additives non-macromolecular inorganic modified by treatment with other compounds
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
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    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
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    • DTEXTILES; PAPER
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    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles

Definitions

  • the present invention relates to an inorganic non-metallic mineral composite material carrying a titanium dioxide layer, a preparation method and application of the composite material.
  • the invention further relates to an inorganic non-metallic mineral composite material carrying a titanium dioxide layer and one or more functional layers, a method of preparation and application of the composite material. Background technique
  • Titanium dioxide is an important chemical raw material closely related to our life. When its particle size drops to the nanometer level, it has a good absorption of ultraviolet light and photocatalytic properties due to its special structural level. Years of research hotspots. However, due to the large specific surface energy of nano-titanium dioxide, the application of nano-titanium dioxide in coatings, plastics, paper, rubber, environmental treatment, etc., can not achieve true nano-dispersion, and can only exist in the form of micron-sized agglomerates. In the middle, the nanometer performance cannot be fully demonstrated.
  • An inorganic antibacterial composite micropowder prepared by nano-nano-titanium dioxide-coated silica is prepared, and the powder is added to an ABS resin to prepare an antibacterial polymer product; and as a patent CN101077792A, only one of the inventions by Jinfang is passed through a sol-gel method.
  • the orthotitanic acid is a titanium source
  • the sol-gel is obtained by dissolving ortho-titanic acid with hydrogen peroxide
  • the nano-titanium composite material with a core-shell structure is prepared by coating nano-titanium dioxide on the surface of polystyrene; as in patent 101475215A, Huadong et al.
  • the titanium tetrachloride or titanium sulfate is directly added dropwise to the suspension of barium sulfate or barium sulfate, and the titanium dioxide hydrate is directly hydrolyzed on the surface of barium sulfate and barium sulfate, and then dehydrated at a high temperature to obtain a composite titanium oxide.
  • Wang Jing et al. invented a method for preparing a photocatalytic functional powder by supporting nano titanium dioxide on the surface of a zeolite by using zeolite as a carrier and a soluble titanium salt as a titanium source.
  • the patent CN1 01 1 08335 ⁇ Guo Li et al.
  • the loading rate (or coating ratio) of nano-titanium dioxide has many influencing factors, and the loading rate is low or the supporting firmness is insufficient.
  • the micron-sized carrier carries nano-titanium dioxide, and the formation of a strong combination is limited by many reaction conditions.
  • a method for preparing a composite material by an inorganic precipitation reaction-heat treatment crystallization process using a water-soluble titanium salt as a titanium source the process is affected by many factors such as pH, impurity ions, temperature, carrier, etc., and is often obtained by being free.
  • nano titanium dioxide a mixture of nano titanium dioxide, a carrier, and a carrier carrying nano titanium dioxide; under certain conditions, a composite of nano titanium dioxide and a carrier, such as pearl mica, can be obtained, but a solid layer cannot be formed between the titanium dioxide layer and the carrier layer. Loading, the nano-titanium dioxide is easily detached from the carrier after the composite material is dispersed at a high speed.
  • the inventors of the present application disclosed in CN101676030A and CN101 676031 A that the titanium tetrachloride is subjected to secondary hydrolysis under the synergistic action of hydrochloric acid and a polymer compound, and the nano titanium dioxide layer is coated on the surface of the acid-resistant non-metallic ore. No high temperature calcination is required.
  • hydrochloric acid inhibits the growth of the nanoparticles during the hydrolysis of titanium tetrachloride, the size of the formed titanium dioxide nanoparticles is concentrated in the range of 10 nm, and thus the nano titanium dioxide is highly transparent, thereby limiting Titanium dioxide has a high refractive index and high hiding power performance.
  • Another object of the present invention is to provide a process for preparing a composite material in which a nano-titanium dioxide layer is supported on an inorganic non-metallic mineral carrier, which is simple in process and low in preparation cost.
  • It is still another object of the present invention to provide a composition comprising a composite material in which a titanium dioxide layer is supported on an inorganic non-metallic mineral support.
  • Still another object of the present invention is to provide the use of a composite material in which a titanium dioxide layer is supported on an inorganic non-metallic mineral support.
  • a composite material comprising inorganic non-gold as a carrier It is a mineral and a nano-titanium dioxide layer supported on the carrier.
  • the layer is composed of a plurality of titanium dioxide nanospheres composed of a plurality of titanium dioxide nano-single particles.
  • the present invention also provides a composite material comprising an inorganic non-metallic mineral as a carrier, a nano-titanium dioxide layer supported on the carrier, and one or more functional layers supported on the nano-titanium dioxide layer,
  • the nano-titanium dioxide layer is composed of a plurality of titanium dioxide nanospheres composed of a plurality of titanium dioxide nano-single particles.
  • the inorganic non-metallic mineral as a carrier is acid-resistant.
  • the inorganic non-metallic mineral as a carrier is selected from the group consisting of kaolin, mica, talc, barium sulfate, diatomaceous earth, bentonite, montmorillonite, silica, wollastonite, zeolite, sepiolite, An attapulgite, one or more substances in a magnet.
  • the inorganic non-metallic mineral as the carrier has a particle diameter in the range of 0.2 to 100 ⁇ ⁇ .
  • the inorganic non-metallic mineral as the carrier has a particle diameter in the range of 1 - 40 ⁇ m.
  • the titanium dioxide nano single particles have a diameter in the range of 1 to 20 nm, and the titanium dioxide nanospheres have a diameter of 2 to 100 times the diameter of the titanium dioxide nano single particles.
  • the titanium dioxide nano single particles have a diameter in the range of 2 to 10 nm, and the titanium dioxide nanospheres have a diameter of 5 to 50 times the diameter of the titanium dioxide nano single particles.
  • the nano titanium dioxide layer is supported in an amount of from 1 to 50% by weight based on the weight of the inorganic non-metallic mineral carrier layer.
  • the supported amount of the nano-titanium dioxide layer is preferably from 5 to 30% by weight based on the weight of the inorganic non-metallic mineral carrier layer.
  • the supported amount of the nano-titanium dioxide layer is more preferably from 5 to 20% by weight based on the weight of the inorganic non-metallic mineral carrier layer.
  • the loading amount of the functional layer is 0.1 to 20% by weight of the inorganic non-metallic mineral carrier layer.
  • the nano-titanium dioxide layer is firmly supported on the inorganic non-metallic mineral carrier layer.
  • the firm support of the nano-titanium dioxide layer can be confirmed by the following method - 1 gram of the composite material is formulated into a 5% suspension with 20 g of ethanol, and the high-speed dispersion homogenization is performed at a rotational speed of 10,000 rpm. The machine was dispersed for 4 hours, and the concentration of the suspension was diluted to 0. 05% with ethanol, and 0. 02 ml of the diluted solution was taken as a sample, and examined by transmission electron microscopy to select regions in which the particles were distinct, uniform, and concentrated, respectively. Electron micrographs were taken at magnifications of 5,000 and 20,000. From the obtained electron micrographs, it was found that the composites were dispersed by a high-speed dispersion homogenizer, and no free titanium dioxide nanospheres were observed.
  • the functional layer is selected from the group consisting of an ultraviolet shielding protective layer, a flame-retardant layer, a photocatalytic reinforcing layer, an antibacterial layer or a photocatalytic antibacterial reinforcing layer.
  • the ultraviolet shielding protective layer comprises one or more oxides selected from the group consisting of silicon oxide, hydrated silicon oxide, aluminum oxide, hydrated aluminum oxide, and zirconium oxide.
  • the flame retardant layer contains magnesium hydroxide.
  • the photocatalytic enhancement layer comprises zinc oxide.
  • the antimicrobial layer comprises a silver salt.
  • the photocatalytic antimicrobial reinforcing layer comprises zinc oxide and a silver salt.
  • the silver salt is selected from the group consisting of silver chloride or silver phosphate.
  • a method of preparing a composite comprising an inorganic non-metallic mineral as a support and a nano-titanium dioxide layer supported on the support, the method comprising the steps of - in water, inorganic acid and A dispersion suspension of an inorganic non-metallic mineral used as a support material is prepared in the presence of a first dispersant, and a titanium tetrachloride hydrolyzate is prepared in the presence of water and a second dispersant,
  • the composite suspension according to claim 1 is obtained by mixing the dispersion suspension of the acid-resistant non-metallic mineral and the titanium tetrachloride hydrolyzate to cause the reaction to be complete.
  • the present invention also provides a composite material comprising an inorganic non-metallic mineral as a carrier, a nano-titanium dioxide layer supported on the carrier, and one or more functional layers supported on the nano-titanium dioxide layer.
  • Method includes the following steps:
  • the step (2) may be repeated to produce a composite having a multi-layer functional layer.
  • the first dispersing agent is selected from the group consisting of sodium polyacrylate, ammonium polyacrylate, polyacrylamide, alkali metal polyglycolate, polycarboxylic acid, sodium polycarboxylate, and twelfth One or more of sodium sulfate, sodium dodecylsulfonate, sodium lignosulfonate, ammonium salt dispersant, polyester dispersant, polyether dispersant.
  • the second dispersing agent is selected from the group consisting of polyacrylamide, polyvinyl alcohol, sodium polyacrylate, ammonium polyacrylate, polycarboxylic acid, sodium polycarboxylate, ammonium salt dispersant, polyester Minute One or more of a powder, a polyether dispersant, a polyethylene glycol type dispersant, a polyalkenyl alcohol dispersant, a polyimide type dispersant, or a polyurethane type dispersant.
  • the first dispersing agent and the second dispersing agent may be the same or different.
  • the inorganic non-metallic mineral suspension prepared in the presence of water, a mineral acid and a first dispersant is uniformly dispersed, and has a solid content of 4 to 50% by weight; 01 ⁇ 10 ⁇
  • the suspension of the suspension is 0. 01 -10% by weight of the suspension.
  • the titanium tetrachloride hydrolyzate prepared in the presence of water and a second dispersant the weight ratio of water to titanium tetrachloride is (1 - 1 0) : 1 ;
  • the second dispersing agent accounts for 0.5 to 20% by weight of titanium tetrachloride.
  • the mixing ratio of the inorganic non-metallic mineral suspension and the titanium tetrachloride hydrolyzate is such that titanium tetrachloride accounts for 2 to 60% by weight of the inorganic non-metallic mineral.
  • the inorganic acid is an inorganic strong acid.
  • the inorganic acid is one selected from the group consisting of sulfuric acid, hydrochloric acid, and nitric acid, or a mixed acid of several of them.
  • a composition comprising the composite material of the invention described above.
  • the composition may be a coating composition, a cosmetic composition, a papermaking composition, a binder composition, a water treatment composition, a plastic, a rubber, a fiber, a ceramic, an adhesive or a cement composition.
  • the present invention also provides the industrial application of the above composite material of the present invention as an additive.
  • the application is in the field of paper, plastics, paints, fibers, cosmetics, rubber, ceramics, adhesives, cement or water treatment.
  • the composite material of the present invention has a special structure of the supported nano-titanium dioxide layer, the layer is composed of a plurality of titanium dioxide nanospheres, and the titanium dioxide nanospheres are further composed of a plurality of titanium dioxide nanometers. Single particles are combined.
  • the titanium dioxide layer is mostly directly composed of a plurality of titanium dioxide nano single particles.
  • the nano titanium dioxide layer not only can exert the advantages of high refractive index and high hiding power, but also can exert the photocatalytic activity and broaden the composite material due to the characteristics that the plurality of titanium dioxide nano single particles constitute the nanosphere.
  • the application area has improved the overall performance of the final product.
  • the titanium dioxide nanospheres of the present invention have greater specific surface energy than prior art titanium dioxide nanosheets of the same size, making it easier to coat other functional layers to produce functionally enhanced or multi-functional composites.
  • the method for preparing the composite material has the advantages of simple process and low cost, and does not require high-temperature calcination, and can obtain a nano-titanium dioxide layer with a high loading rate, and the nano-titanium dioxide layer in the obtained composite material is firmly supported on the inorganic non-metallic mineral carrier. .
  • the composite material of the present invention has a wide range of uses, for example, as an additive for use in the fields of papermaking, plastics, coatings, fibers, cosmetics, rubber, ceramics, adhesives, cement or water treatment, and has good compatibility.
  • Example 1 is a transmission electron micrograph (X 10000 times) of a sericite composite material loaded with a nano-titanium dioxide layer prepared in Example 1 by transmission electron microscopy;
  • Example 2 is a transmission electron micrograph (X30000 times) of a sericite composite material loaded with a nano-titanium dioxide layer prepared in Example 1 by transmission electron microscopy;
  • FIG. 3 is a transmission electron micrograph (X 100000 times) of a sericite composite material loaded with a nano-titanium dioxide layer prepared in Example 1 by transmission electron microscopy;
  • FIG. 5 and FIG. 6 are diagrams showing the transmission electron microscopy of the nanometer titanium dioxide layer-loaded sericite composite material prepared in Example 1 when the titanium dioxide layer is subjected to the fastness test of the titanium dioxide layer after high-speed dispersion by a high-speed homogenizer at 10,000 rpm. Photo (X 5000 times);
  • Example 7 is a transmission electron micrograph (X 20000 times) of a sericite composite material loaded with a nano-titanium dioxide layer prepared in Example 1 after high-speed dispersion of a titanium dioxide layer by a high-speed homogenizer at a 10,000 rpm high speed homogenizer;
  • Example 8 is a transmission electron micrograph of a kaolin composite material loaded with a nano-titanium dioxide layer prepared in Example 2 by a transmission electron microscope (X 20000 times);
  • Example 10 is a transmission electron micrograph (X 50000 times) of a kaolin composite material loaded with a nano-titanium dioxide layer prepared in Example 2 by a transmission electron microscope;
  • Figure 1 is a transmission electron micrograph (X 500000 times) of a kaolin composite material loaded with a nano-titanium dioxide layer prepared in Example 2 by transmission electron microscopy;
  • FIG. 13 is a transmission electron micrograph (X 50000 times) of a sericite composite material loaded with a nano-titanium dioxide layer prepared in Example 3 by transmission electron microscopy;
  • FIG. 15 is a transmission electron micrograph of a sericite composite material loaded with a nano-titanium dioxide layer prepared in Example 3 by a transmission electron microscope (X 200000 times)
  • Figure 16 is a UV-visible diffuse reflection absorption spectrum of the functional composite obtained in Example 4. detailed description
  • the nano titanium dioxide layer supported on the inorganic non-metallic mineral carrier is composed of a plurality of titanium dioxide nanospheres, which in turn are composed of a plurality of titanium dioxide nano single particles.
  • the nanometer titanium dioxide layer of this structure has the characteristics of large specific surface area, high specific surface energy, and many surface dangling bonds, and fully realizes nano-scale dispersion, and truly exerts the advantages of nano titanium dioxide.
  • the titanium dioxide nano-single particles have a diameter in the range of from 1 to 20 nm, and the titanium dioxide nanospheres have a diameter of from 2 to 100 times the diameter of the titanium dioxide nano-single particles. More preferably, the titanium dioxide nanosheet has a diameter in the range of 2 to 10 nm, and the titania nanosphere has a diameter of 5 to 50 times the diameter of the titania nanoparticle. Preferably, the titanium dioxide nanospheres have a diameter in the range of 50 to 150 nanometers.
  • the titanium dioxide layer in the composite material of the present invention not only has ultraviolet absorption, photocatalysis, and antibacterial properties, but these nano titanium dioxide single particles have a large specific surface area and a large number of surface atoms, and these atoms are very active and easily combine with other atoms.
  • By utilizing this property it is possible to easily carry the functional layer on the titanium dioxide layer to prepare a functional composite material.
  • a multi-layer (including two layers) functional layer to make a multi-functional composite material.
  • titanium dioxide layer There may be many functional layers supported on the titanium dioxide layer, including but not limited to: an ultraviolet shielding protective layer, a flame retardant layer, a photocatalytic reinforcing layer, an antibacterial layer or a photocatalytic antibacterial layer.
  • the ultraviolet shielding protective layer comprises one or more oxides selected from the group consisting of silicon oxide, hydrated silicon oxide, aluminum oxide, hydrated aluminum oxide, and zirconium oxide.
  • the nano-titanium dioxide layer functions to absorb ultraviolet rays, and the outer ultraviolet shielding layer is used to isolate and passivate the direct contact between the free radicals generated by the absorption of ultraviolet rays in the nano-titanium dioxide layer and the products in the application field, thereby preventing the free radical oxidation degradation application products. (eg resin for coatings, plastic organics, etc.). That is to say, the titanium dioxide layer and the ultraviolet shielding protective layer work together to shield ultraviolet rays.
  • the flame retardant layer contains magnesium hydroxide. Further supporting magnesium hydroxide on the nano-titanium dioxide layer of the composite material of the present invention can effectively realize nano-dispersion of the magnesium hydroxide flame-retardant material, thereby obtaining a composite material having a flame-retardant function. Further, the flame-retardant layer may be further supported on the ultraviolet shielding protective layer supported on the nano-titanium dioxide layer, or the ultraviolet shielding layer may be further supported on the flame-retardant layer supported on the nano-titanium dioxide layer to form Composite material with UV shielding and flame retardant multiple functions. This composite has a wide range of uses in the plastics and coatings sector.
  • the photocatalytic enhancement layer contains zinc oxide.
  • the photocatalytic material (such as zinc oxide) is continuously supported on the nanometer titanium dioxide layer of the composite material of the invention, and the zinc oxide and the nano titanium dioxide layer cooperate to further The photocatalytic activity is activated to produce a photocatalytic material having superior performance.
  • the antibacterial layer contains a silver salt.
  • the silver salt is preferably silver chloride or silver phosphate.
  • the composite material of the present invention can simultaneously carry a photocatalytic reinforcing layer and an antibacterial layer to obtain a composite material having both photocatalytic and dim light antibacterial and antifungal functions.
  • a photocatalytic antibacterial layer can also be prepared by mixing a photocatalytic material and an antibacterial material, and a photocatalytic antibacterial and antifungal solution can be realized by carrying only a layer of a mixture of a photocatalytic material and an antibacterial material on the titanium dioxide layer. Anti-mildew dual function.
  • the titanium dioxide nanospheres formed by combining the nano single particles have a higher refractive index, and the opacity thereof is enhanced, so that the composite material formed with the inorganic non-metallic mineral carrier itself has a higher
  • the opacity can be used to replace some of the titanium dioxide in the fields of plastics, paints and the like.
  • the "nano-titanium dioxide layer" according to the present invention may be a surface completely coated with an inorganic non-metallic mineral carrier, or may be a surface partially coated with an inorganic non-metallic mineral carrier.
  • the surface of the carrier is substantially entirely loaded with titanium dioxide nanospheres.
  • the titanium dioxide nanospheres are dispersed on the surface of the carrier, that is, a part of the carrier surface is loaded with titanium dioxide nanospheres, and a part of the carrier surface is bare.
  • the degree of coating of the nano-cerium oxide layer depends on the loading of the nano-titanium dioxide layer relative to the inorganic non-metallic mineral carrier layer. The load is usually determined by different needs (including usage and cost requirements).
  • the composite of the invention is prepared by dispersing an inorganic non-metallic mineral used as a support material in the presence of water, a mineral acid and a first dispersant, stirring to form a uniformly dispersed suspension. 5 ⁇ The liquid (more preferably at a temperature of 50-100 ° C), the solid content of the suspension is 4-50% by weight (more preferably 10-35 wt%), the inorganic acid accounted for 2. 5 -35 weight of the suspension 01 ⁇ 10 ⁇ % ( More preferably, it is 0.1 to 3% by weight);
  • the second dispersing agent accounts for 0.5% of titanium tetrachloride.
  • the second dispersing agent accounts for 0.5% of titanium tetrachloride.
  • the second dispersing agent accounts for 0.5% of titanium tetrachloride. 5-10 ⁇ %;
  • the second dispersing agent accounts for 0.5 to 10% by weight of titanium tetrachloride;
  • the mixing ratio of the inorganic non-metallic mineral suspension and the titanium tetrachloride hydrolyzate is such that titanium tetrachloride accounts for 2 to 60% by weight of the inorganic non-metallic mineral, and particularly preferably 4 to 40% by weight.
  • the composite material having the functional layer of the present invention is prepared as follows: a composite product having a nano-titanium dioxide layer supported on an inorganic non-metallic mineral carrier obtained as above is in water and first Dispersing in the presence of a dispersing agent to prepare a suspension (more preferably at 50 to 10 (with stirring at TC), the solid content of the suspension is 10-30% by weight, and the pH of the suspension is adjusted to 4 In the range of -1 1, the raw material for preparing the functional layer is added thereto, the reaction is completed, and dried by filtration to obtain a composite material in which a functional layer is further supported on the titanium dioxide layer.
  • the raw materials for preparing the functional layer can be selected depending on the desired function.
  • the raw material used to prepare the ultraviolet shielding protective layer may be a silicon source, an aluminum source, and/or a zirconium source.
  • the silicon source may be one or a mixture of two or more of sodium silicate, water glass, and silica sol;
  • the aluminum source may be one or a mixture of two or more of aluminum chloride, aluminum sulfate, sodium metaaluminate, and the like.
  • the zirconium source may be one or a mixture of two or more of zirconium oxychloride, zirconium sulfate or zirconyl sulfate.
  • the raw material used to prepare the flame retardant layer may be a magnesium source.
  • the magnesium source may be a soluble magnesium salt such as magnesium sulfate or magnesium chloride. While the above raw materials are added to the suspension as needed, the corresponding acid, base or salt is added, and the corresponding functional layer is obtained by the reaction.
  • the corresponding acid may be one or a mixture of two or more of sulfuric acid, hydrochloric acid, nitric acid;
  • the corresponding base may be one or a mixture of two or more of sodium hydroxide, potassium hydroxide, ammonia;
  • the corresponding salt may be chlorine Chloride salts such as potassium, sodium chloride or ammonium chloride.
  • the first dispersant is selected from the group consisting of sodium polyacrylate, ammonium polyacrylate, polyacrylamide, polyalkali metal phosphate (such as sodium tripolyphosphate, sodium hexametaphosphate or sodium pyrophosphate) One or more of polycarboxylic acid, sodium polycarboxylate, sodium dodecyl sulfate, sodium dodecylsulfonate, sodium lignosulfonate, ammonium salt dispersant, polyester dispersant, polyether dispersant
  • the second dispersant is selected from the group consisting of polyacrylamide, polyvinyl alcohol, sodium polyacrylate, ammonium polyacrylate, polycarboxylic acid, sodium polycarboxylate, ammonium salt dispersant, polyester dispersant (such as fatty acid polyethylene glycol ester) One or more of a dispersing agent, a polyether dispersing agent, a polyethylene glycol type dispersing agent, a polyalkeny
  • the composite of the present invention can be used in the fields of papermaking, plastics, coatings, fibers, cosmetics, rubber, ceramics, adhesives, cement or water treatment.
  • the method of use is substantially the same as that of the conventional pigment titanium dioxide or inorganic filler (e.g., talc, sericite, kaolin, titanium dioxide, barium sulfate, etc.), and the amount of the composite of the present invention is generally from 1 to 20% by weight.
  • the composite material of the invention can be applied not only as an ordinary inorganic filler in the above-mentioned fields, but also can replace some titanium dioxide in the above-mentioned products to a certain extent, and can also impart ultraviolet shielding, flame retardancy, photocatalysis and/or antibacterial to the product. And other functions.
  • 400g of 1250 mesh sericite was added to a mixed solution of 1 100 g of water, 70 g of sulfuric acid, 1.6 g of sodium hexametaphosphate, 0.4 g of polyacrylamide, and stirred at 80-9 CTC to form a uniformly dispersed Suspension; weigh 50 g of titanium tetrachloride, and add 10 g of an aqueous solution containing 3 g of polyethylene glycol 1200, 1 g of polyvinyl alcohol (PVA), 0.5 g of polyamidiamine dispersant to 4 Titanium chloride, a stable titanium tetrachloride hydrolyzate is prepared; the titanium tetrachloride hydrolyzed droplets are added to the suspension containing sericite, and after reacting for 4 hours, the filtrate is washed with water until the pH of the filtrate is close to 4, and the composite material is filtered. The cake, after drying, gives the functional composite 1.
  • PVA polyvinyl alcohol
  • the titanium dioxide supporting amount of the composite material obtained in Example 1 was measured by a metal aluminum reduction method to obtain a titanium dioxide supporting amount of 5%.
  • the obtained composite product was dispersed in an ethanol solvent at a concentration of 0.05% to 0.1%, and ultrasonicated for 20 minutes in an ultrasonic wave to obtain a uniform suspension.
  • the suspended droplets were applied to a copper mesh and observed under high power transmission electron microscopy.
  • Fig. 1 to Fig. 4 are electron micrographs at magnifications of X 10000, X 30000, X 100000, and X 500000, respectively.
  • the composite product obtained in Example 1 is loaded with a nano-titanium dioxide layer on the sericite carrier 1, the titanium dioxide layer being composed of a plurality of titanium dioxide nanospheres 2, which in turn are composed of a plurality of titanium dioxide nanometers.
  • Single particle 3 composition Single particle 3 composition.
  • the titanium dioxide nano-single particles have a diameter of 4 to 8 nm, and the titanium dioxide nanospheres have a diameter of 50 to 85 nm. In addition, no free titanium dioxide nanoparticles were found under high power transmission electron microscopy. Detecting the loading fastness of the titanium dioxide layer
  • Example 1 1 g of the composite material prepared in Example 1 was formulated into a 5% suspension with 20 g of ethanol, and dispersed by a high-speed dispersing homogenizer rotating at 10,000 rpm for 4 hours, and then the concentration of the suspension was adjusted with ethanol. Diluted to 0. 05%, taking 0. 02ml of the diluent as a sample, using a transmission electron microscope to detect, select the area of the particles that are distinct, uniform and concentrated, and take the electron microscope image at the magnification of X 5000 and X 20000 respectively, and obtain the image of Figure 5 to Fig. 7 is an electron micrograph, wherein Fig. 5 and Fig. 6 show transmission electron micrographs taken at different magnifications at 5000 magnifications.
  • Example 2 It can be visually seen from these photographs that the composite material obtained in Example 1 was After dispersing by the high-speed dispersing homogenizer, no obvious free titanium dioxide nanospheres appeared. This indicates that the nano-titanium dioxide layer is firmly supported on the surface of the sericite sheet.
  • Example 2
  • 500 grams of 800 mesh kaolin is added to 2000 grams of water, 300 grams of hydrochloric acid, 50 grams of sulfuric acid, 2 grams of sodium hexametaphosphate, 1 gram of polyether L61 (Guangzhou Chengfeida Trading Co., Ltd.) in a mixed solution, Stir at 80-90 °C to form a uniformly dispersed suspension; weigh 240 grams of titanium tetrachloride, which will contain 6 grams of polycarboxylate TH-361 (Shandong Taihe Water Treatment Co., Ltd.), 3 grams of polyethylene glycol 1200, 1 gram of polyvinyl alcohol (PVA) aqueous solution was added dropwise to 1900 g of titanium tetrachloride to prepare a stable titanium tetrachloride hydrolyzate; the titanium tetrachloride hydrolyzed droplets were added to the suspension containing kaolin, and after reacting for 6 hours, The mixture was washed with water until the pH of the filtrate reached 5 to
  • the titanium dioxide supporting amount of the composite material obtained in Example 2 was measured by a metal aluminum reduction method to obtain a titanium oxide supporting amount of 19.5%.
  • the obtained composite product was dispersed in an ethanol solvent at a concentration of 0.05% to 0.1%, and ultrasonicated for 20 minutes in an ultrasonic wave to obtain a uniform suspension.
  • the suspended droplets were applied to a copper mesh and observed under high power transmission electron microscopy.
  • Figure 8 to Figure 1 1 are the electron micrographs at magnifications of X 20000, X 30000, X 50000, X 500000 respectively.
  • the composite product obtained in Example 2 was loaded with a nano-titanium dioxide layer on the kaolin carrier 4, the titania layer consisting of a plurality of titanium dioxide nanospheres 2, which in turn were composed of a plurality of titanium dioxide nano-particles.
  • Single particle 3 composition The titanium dioxide nano single particles have a diameter of 2 to 10 nm, and the titanium dioxide nanospheres have a diameter of 120 to 200 nm. In addition, no free titanium dioxide nanoparticles were found under high power transmission electron microscopy.
  • 600 g of 800 mesh sericite is added to 1 100 g water, 40 g hydrochloric acid, 10 g sulfuric acid, 6 g sodium hexametaphosphate, 2 g polycarboxylate GY-D06 (Suihua Chemical Science and Technology Research Institute)
  • the mixed solution is stirred at 85-95 ° C to form a uniformly dispersed suspension; 200 g of titanium tetrachloride is weighed, and 1 g of polyethylene glycol 1200, 0.4 g of polyvinyl alcohol (PVA), 0.
  • PVA polyvinyl alcohol
  • the amount of titanium dioxide supported by the composite material obtained in Example 3 was measured by a metal aluminum reduction method to obtain a titanium dioxide supporting amount of 12%.
  • the obtained composite product was dispersed in an ethanol solvent at a concentration of 0.05% to 0.1%, and ultrasonicated for 20 minutes in an ultrasonic wave to obtain a uniform suspension.
  • the suspended droplets were applied to a copper mesh and observed under high power transmission electron microscopy.
  • Fig. 12 to Fig. 14 are electron micrographs at magnifications of X 20000, X 50000, and X 10000, respectively. It can be seen from these photographs that the composite product obtained in Example 3 is loaded with a nano-titanium dioxide layer on the sericite carrier 1, and the titanium dioxide layer is composed of a plurality of titanium dioxide nanospheres 2, which are in turn composed of a plurality of titanium dioxide nanometers.
  • Single particle 3 composition Single particle 3 composition.
  • the titanium dioxide nano single particles have a diameter of 2 to 10 nm, and the titanium dioxide nanospheres have a diameter of 150 to 250 nm. In addition, no free titanium dioxide nanoparticles were found under high power transmission electron microscopy.
  • Example 4 (supporting ultraviolet shielding layer)
  • TC 10% sodium hydroxide to adjust the pH
  • UV-visible diffuse reflection absorption of the functional composites prepared in this example was examined by UV-Vis spectroscopy (UV-Vis-NIR Spectrophotometer) according to the method of ultraviolet and visible absorption spectroscopy according to JY/T022-1996.
  • the performance, the resulting spectrum is shown in Figure 15.
  • the functional composite can absorb ultraviolet light having a wavelength in the range of 200-380 ntn, and thus has a good ultraviolet shielding function.
  • Example 5 supporting ultraviolet shielding protective layer and flame retardant layer
  • the gram of the mixture was added to the gram of water.
  • Sodium polyacrylate, 0.4 g of sodium hexametaphosphate was stirred to prepare a dispersed homogenous suspension, the suspension was heated to 80 ° C, 10% sodium hydroxide was added to adjust the pH to 10, and the concentration of 120 g was 10
  • a % aqueous solution of sodium silicate was added to the suspension while adding a 10% aqueous solution of sulfuric acid to maintain a pH of 10.
  • the temperature is lowered to 70 ⁇
  • 10% sulfuric acid solution is added to adjust the pH to 5
  • 90 gram of 10% sodium metaaluminate is continuously added to the suspension
  • 10% aqueous sulfuric acid solution is added to maintain the pH.
  • No change after the completion of the dropwise addition, adjust the pH to 8 with 10% sodium hydroxide, maintain the pH and temperature unchanged, and add 240 g of a 15% magnesium chloride solution to the suspension, while adding 10% Sodium hydroxide, keep the pH unchanged.
  • Example 6 (supporting photocatalytic enhancement layer)
  • Example 7 (supporting antibacterial layer)
  • Example 8 (supporting photocatalytic antibacterial layer)
  • Example 9 (Application of Functional Composite 4 in Cosmetics, Application of Foundation Cream) The functional composite material 4 obtained in Example 4 was used as a cosmetic additive, and a sunscreen lotion was prepared in accordance with the following formula.
  • Stearic acid, cetyl alcohol, white oil, polyoxyethylene oleate are heated to 70-75 under constant stirring. C, it is sufficiently melted or dissolved to be uniformly prepared into a uniform oil phase for use.
  • the functional composite material 4 talc powder, aluminum magnesium silicate was added to 20 g of water, stirred and dispersed for 30 minutes to make it evenly dispersed, and Span-80, triethanolamine, propylene glycol, polyethylene glycol, and 37 g of water were added thereto. ⁇ , stir to 90-100 ⁇ , sterilize for 20 minutes, then cool to 70-75 ° C, prepare the desired aqueous phase system; maintain 70-75 ⁇ under stirring, slowly prepare the prepared oil phase Add the aqueous phase system to prepare an oil/water sunscreen lotion, and then slowly add the preservative and flavor.
  • the prepared sunscreen lotion containing the functional composite material 4 is tested according to IS0/TR 26369: 2009 "Cosmetic - Sunscreen efficacy test method - review and evaluation of the photoprotective performance test method for sunscreen cosmetics", the sunscreen lotion The sun protection factor is SPF15. It turns out that the functional composite is added to the cosmetic and can give the product a physical sunscreen effect.
  • Example 10 Application of Functional Composite Material 4 in Coatings, Exterior Wall Latex Paint as Application Example
  • a latex paint was obtained in the following formulation. 129 grams of water
  • Emulsion Acrona l 290 D 270 g first with talc, titanium dioxide, functional composite 4, heavy calcium carbonate, sericite, preservative, defoamer, wetting and dispersing agent, wetting agent enapon, 70 g of water Disperse at high speed on a high-speed disperser for 1 hour, then add the emulsion Acronal 290 D, filming aid, propylene glycol, thickener, 59 g of water, etc. for 1 hour, then adjust the pH to 7-8 with 25% ammonia water to prepare latex. paint. Comparative Example 1 (Latex paint using titanium dioxide as an additive)
  • a latex paint was prepared in the same manner as in Example 10 except that 120 g of titanium dioxide was used instead of 80 g of titanium dioxide and 40 g of functional composite 4.
  • the latex paints prepared in Example 10 and Comparative Example 1 were tested according to GB/T9755-2001 "Synthetic Resin Emulsion Exterior Wall Coatings" as follows: Performance test item Example 10 Comparative Example 1 Comparative ratio (whiteness and light color) 0.933 0.938 Drying time (dry) /h 2 hours 2 hours Water resistance (96h) No abnormality No abnormal whiteness 93.4 94.2
  • Titanium dioxide 24.2 g
  • Curing agent ⁇ -2833 ((Ciba- Geigy) 3 ⁇ 1 gram
  • the leveling agent was pre-dispersed in an epoxy resin at a ratio of 10%, and then the mixed component was pulverized to a particle diameter of 3-5 mni.
  • the epoxy resin is also pulverized to a particle diameter of 3-5 mni, and all components are pre-mixed for 10 minutes according to the formulation, and the homogeneous mixture is added to the extruder for extrusion, and the temperature in the machine chamber is 75 ° C-85. °C, the extrusion head temperature was 95 ° C, and the extrudate was cooled for fine pulverization.
  • Comparative Example 2 (Powder coating using titanium dioxide as an additive)
  • a powder coating was prepared in the same manner as in Example 11 except that 32.2 g of titanium dioxide was used instead of 24.2 g of titanium dioxide and 8 g of functional composite 8.
  • the epoxy powder coatings prepared in Example 11 and Comparative Example 2 were respectively subjected to electrostatic spraying, and the following performance tests were performed on the coating according to the standard GB/T 21776-2008 "Guidelines for Testing Standards for Powder Coatings and Coatings", and the results were as follows: Performance Test Item Example 1 1 Comparative Example 2 Opacity (contrast ratio) 0. 941 0. 943 Whiteness 92 93 Impact resistance Positive recoil through positive and negative recoil through the appearance of smooth and smooth smooth film thickness 65-70um 65- 70um gloss ⁇ 85 ⁇ 85 sterilization rate
  • Staphylococcus aureus >99% ⁇ 24% Escherichia coli >99% >31%
  • Candida albicans >93% 0
  • ABS resin, silicon germanium coupling agent and composite material 5 into a high-speed mixer, stir for 5 minutes, and extrude and granulate with a reaction type twin-screw extruder.
  • the temperature of each section of the extruder is 200-240 ° C.
  • the extruded pellets were kneaded on a two-roll mill at 150 ° C and then press-formed at a molding temperature of 170 ° C, a preheating time of 2 minutes, a dwell time of 5 minutes, and a pressure of 55 MPa.
  • Comparative Example 3 plastic ABS products without composite material 5
  • ABS plastic article was directly prepared in the same manner as in Example 12 without the addition of the composite material 5.
  • the ABS plastic pellets prepared in Example 12 and Comparative Example 3 were compression-molded, the ABS plastic was pressed according to the standard GB/T2406-1993 "Plastics burning performance test method: Oxygen index method", "Plastics burning performance test method” : Smoke density test method” Vertical burning according to GB / T 4609-1984 test; horizontal burning press GB / T 2408-1996 test.
  • Example 1 3 Application of composite material 6 chemical fiber, taking polypropylene nonwoven fabric as an example
  • Titanate coupling agent 0. 1 g
  • a polypropylene nonwoven fabric was directly prepared in the same manner as in Example 12 without adding the composite material 6 and the titanate coupling agent.
  • antibacterial detection was carried out on Example 13 and Comparative Example 4.
  • Sterilization rate Example 13 Comparative Example 4 Staphylococcus aureus>99% 0 Escherichia coli>99% 0 Candida albicans>93% 0 It can be seen that a functional composite material 6 having photocatalytic efficacy is added to the nonwoven fabric, It can impart antibacterial effect to the non-woven fabric.
  • Example 14 Application of composite material 4 in paper, coated paper as an application example
  • Base paper (white cardboard): Quantitative 22518 gm 2 , tightness 0.75g. m 3 , whiteness 75.72%, opacity 98.63 %, PPS roughness 7.44 ⁇ ; gloss 11.7%.
  • the starch was dispersed and dispersed in 6 g of 70 ° C water.
  • the two pre-dispersed raw materials prepared above and the remaining raw materials are mixed with water and stirred to prepare a 60% solid primer for use.
  • kaolin 20 grams of CaC0 3 , functional composition 4 20 grams, dispersant, sodium hexametaphosphate 0.4 g, styrene-butadiene latex (SBR) dosage 13 g, hydroxymethyl cellulose (CMC) dosage 0.5 g, hard Calcium citrate 0.5 g, butanol defoamer dosage 0.2 g, octanol 0.1 g, prepared into a solid 50% topcoat, ready for use.
  • SBR styrene-butadiene latex
  • CMC hydroxymethyl cellulose
  • the coating operation was carried out on a K303 coater with a primer coating amount of S Og/ni 2 and a top coat amount of
  • Example 10 10 - 12g/m 2 . It is dried by hot air, and the drying temperature is controlled at 105 °C. The coated paper is subjected to humidity conditioning before calendering. Comparative Example 5 (The functional composite material was not added in the coated paper formulation, and the composite material of the above formula was replaced by kaolin) Primer and topcoat were prepared in the same manner as in Example 14, except that 20 g of kaolin was used instead of 20 g of composite.
  • Example 14 and Comparative Example 5 The physical properties of the coated paper prepared were determined according to national standards GB - T
  • the papermaking slurry is designed to be 120g/m 2 , and the weighed pulp is stirred for 1 minute, then the functional compound is added.
  • Material 6, add 30% (based on dry pulp), stir for 1 minute, add 500 pptn of polyacrylamide, stir for 30 seconds, remove, and take a piece on a square-type tablet, 0.3 Mpa
  • the pressure was calendered once, and the water was equilibrated at 105 ° C for 20 minutes at room temperature to obtain a functional paper having an antibacterial effect.
  • Comparative Example 6 (Adding kaolin to the functional composite in the slurry 6)
  • Paper was prepared by adding kaolin in the slurry in the same manner as in Example 14.
  • Example 1 6 Application of functional composite material 7 in adhesive, using neoprene adhesive as an example of construction neoprene adhesive
  • Antioxidant RD 2 , 2, 4-trimethyl 1, 2-dihydroquine polymer ) 2 parts
  • the solid content is generally 20% - 30%, solvent 40% toluene, 30% ethyl acetate and 30% gasoline mixed solvent).
  • Antioxidant RD 2, 2, 4-trimethyl 1, 2-dihydroquine polymer 2 parts
  • the solid content is generally 20% - 30%, solvent 40% toluene, 30% ethyl acetate and 30% gasoline mixed solvent).
  • the neoprene rubber is melted, and then the functional composite material 7, the magnesium oxide and the calcium silicate filler are mixed into the raw rubber to prepare a rubber mixture; the resin is dissolved in the solvent, and then mixed under stirring. The rubber is dissolved therein, and the other components are added together to prepare a uniform adhesive. Detection:
  • Example 1 and Pair of Adhesives Proportion 7 is tested.
  • the antibacterial property is tested according to GB/T21866-2008 "Antibacterial coating (paint film) antibacterial measurement method and antibacterial effect”, and the anti-mildew is tested according to JISZ 291 1-1992 "Anti-fungal test method”.
  • the functional composite material can replace the inorganic filler in the adhesive as an inorganic filler in an equal amount, and the adhesive property is unchanged, and at the same time, the antibacterial and anti-mildew effect of the adhesive is imparted.
  • Example 17 Application of Functional Composites 6 in Cement (Examples of cement mortars that can be applied to building facades and floor plastering mortars)
  • Naphthalene type water reducing agent naphthalene sulfonate formaldehyde condensate 0. 5 kg
  • Naphthalene type water reducing agent naphthalene sulfonate formaldehyde condensate 0. 5 kg
  • the cement, sand, naphthalene water reducing agent and ethylene-vinyl acetate copolymer latex powder are mixed and stirred uniformly, and the prepared comparative cement slurry is coated on a 50 cm X 50 cm glass plate and naturally dried.
  • the prepared cement paste-coated glass plate is cleaned for 24 hours according to GB/T 23761 -2009 "Photocatalytic Air Purifying Material Performance Test Method".
  • the cement slurry to which the functional composite material 6 is added has good air purifying properties, and can be prepared as a functional product with purified air, such as coating on a building facade or a floor plastering mortar surface layer.
  • Example 18 Application of Functional Composite 4 in Rubber (Taking Styrene Butadiene Rubber as an Example)
  • Antioxidant AW 1g Preparation process: The raw rubber styrene-butadiene rubber 1500 is mixed in the open mill according to the thin plate of the pan, and the raw rubber, zinc oxide, tetramethylthiuram disulfide, stearic acid, N-cyclohexyl sulfide O-benzene, 4 octyloxybenzophenone, anti-aging agent AW, functional composite material 4, sulfur is uniformly thinned after being thinned several times in the mixer, and the mixing time is 12-15 minutes.
  • the vulcanization point was measured by a vulcanizer, and the vulcanization condition was 153 ° C, and vulcanization was carried out at the time of the positive vulcanization point.
  • a test piece of a rubber/multifunctional composite material is formed by vulcanization or molding. Comparative Example 9 (no functional composite 4, pure styrene butadiene rubber)
  • the formulation was similar to that of Example 18 except that the functional composite 4 of Example 18 was removed, and pure styrene-butadiene rubber was prepared in the same manner.
  • the mechanical properties of the obtained rubber test piece according to the standard GB 6037-1985 "Determination of high temperature tensile strength and elongation at break of vulcanized rubber", GB/T 528-1998 “tensile stress-strain performance”, GB/T 528-1999 “Tear Strength Test”, GB/T 7755-1987 "Vulcanized Rubber Permeability Test” The test results are as follows -
  • the functional composite material 4 can significantly improve the mechanical properties of the rubber in the styrene-butadiene rubber, and at the same time, it has a certain barrier effect on the gas, and the gas permeability is reduced by 48% compared with the pure styrene-butadiene rubber.
  • Example 19 Application of multifunctional composite material 8 in ceramic glaze
  • Bottom glaze formula Zirconium opaque glaze for bottom glaze Component content (% by weight)
  • Preparation process After spraying the glaze twice on the surface of the ceramic mud, the ceramic is placed in the furnace for sintering. During the sintering process, it is required to uniformly heat to 300 1 in one and a half hours, and keep it for one and a half hours, and continue in one and a half hours. Warm to 600 °C at a constant speed, keep warm for 1 hour and a half, then warm to 900 °C at a constant rate. After 1 hour and a half, keep warming to 1 200 °C for 2 hours, keep warm for 2 hours, turn off the heat source. It is naturally cooled to obtain an antibacterial sanitary ceramic. Comparative example 10
  • Example 19 Antibacterial rate Comparative example 10 Antibacterial rate Staphylococcus aureus 96. 3% 42%

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Abstract

一种复合材料包括作为载体的无机非金属矿物和担载在该载体上的纳米二氧化钛层,该层由多个二氧化钛纳米球组成,所述二氧化钛纳米球由多个二氧化钛纳米单颗粒组成。还提供了在所述纳米二氧化钛层上进一步担载有一层或多层功能层的复合材料。上述复合材料不仅能发挥纳米二氧化钛层高折射率、高遮盖力的优势,而且能发挥其小纳米单颗粒较好的光催化活性,而且易于包覆有其它功能层以制备功能加强型或多重功能的复合材料。另外,提供了上述复合材料的制备方法,该制备方法简单、成本低。所述复合材料可作为添加剂用于多种工业领域,并且具有良好的相容性。

Description

一种担载有二氧化钛层的无机非金属矿物复合材料、 其制备方法及应用 技术领域
本发明涉及一种担载有二氧化钛层的无机非金属矿物复合材料, 该复合材 料的制备方法以及应用。 本发明还涉及担载有二氧化钛层与一层或多层功能层 的无机非金属矿物复合材料, 该复合材料的制备方法以及应用。 背景技术
二氧化钛是与我们生活密切相关的一种重要化工原料, 当其粒径下降到纳 米级时, 由于其特殊的结构层次, 使其具备较好的吸收紫外线的光学性能和光 催化性能, 因此成为近 20年的研究热点。但由于纳米二氧化钛较大的比表面能, 使纳米二氧化钛在涂料、 塑料、 纸张、 橡胶、 环境处理等领域中应用, 不能实 现真正的纳米分散, 只能以微米级团聚体的形式存在于应用体系中, 不能充分 展现纳米性能。
如何解决纳米颗粒的团聚, 有效地利用纳米材料的优异性能成为目前纳米 材料制备技术的核心问题。 人们提出了选择合适的微米级载体担载纳米材料来 制备微纳米复合功能材料的思路, 如专利 CN1563183A , 王相田等发明了以钛酸 正酯为钛源, 在乙醇和乙酸的混合体系中反应制备纳米纳二氧化钛包覆二氧化 硅的无机抗菌复合微粉, 并将该粉加入到 ABS树脂中制成抗菌高分子制品; 又 如专利 CN101077792A , 只金芳发明的一种通过溶胶凝胶法、 以正钛酸为钛源, 以过氧化氢溶解正钛酸得到溶胶凝胶, 在聚苯乙烯表面包覆纳米二氧化钛制备 一种核壳结构的微纳米复合材料; 再如专利 101475215A , 华东等人发明的在硫 酸钡或硫酸锶的混悬液中直接滴加四氯化钛或硫酸钛, 在硫酸钡和硫酸锶表面 直接水解包覆二氧化钛水合物, 再高温煅烧脱水得到复合二氧化钛。 在专利 CN1 724145A中, 汪靖等人发明了一种以沸石为载体、 以可溶性钛盐为钛源、 以 浸渍焙烧的方法在沸石表面担载纳米二氧化钛制得光催化功能粉体的方法。 在 专利 CN1 01 1 08335屮, 郭莉等人发明了先以钛酸丁酯为钛源, 制备纳米二氧化 钛透明凝胶, 再将白土与透明凝胶混合、 水洗、 干燥、 煅烧, 得到白土担载纳 米二氧化钛的光催化材料。 在专利 CN101757937中, 陈若愚等人发明了纳米二 氧化钛插入磷酸锆层间制备插层光催化复合材料; 在专利 CN101 293754A屮, 刘 晓华发明了在硅微粉表面担载纳米二氧化钛制备钛白复合材料。 在专利 US20100298484中, ALLRN等人发明了一种在耐酸性高分子聚合物表面担载二氧
确 认 本 化钛制备不透明颜料。 在专利 US20100247915中, FURUKAWAD等人发明了在高温 氧气氛环境下, 在 Τ Ν表面担载纳米二氧化钛来制备功能复合体。
上述专利和文献报道均在微米级载体上担载纳米二氧化钛以制备功能复 合粉体技术上作出了一些有益的探索。但这些技术总体来说,仍存在以下问题: 1 .制备成本相对较高, 工艺复杂。 例如, 以钛酸酯或正钛酸等为钛源的凝 胶溶胶法, 以可溶性钛盐为钛源直接担载于微米载体上的浸渍焙烧法, 以及在 高温氧气氛环境下制备担载有纳米二氧化钛的微纳米复合材料等方法, 这些方 法都需要高温煅烧转晶或者在高温氧气氛环境下反应, 都存在制备成本较高、 工艺复杂、 设备要求高的问题。
2. 目前这些方法中, 纳米二氧化钛的担载率(或包覆率)的影响因素较多, 担载率偏低或担载牢固度不够。 微米级载体担载纳米二氧化钛, 能否形成一种 牢固的结合体受到很多反应条件的限制。 例如, 以水溶性钛盐为钛源通过无机 沉淀反应-热处理晶化工艺来制备复合材料的方法, 其工艺受到 PH值、 杂质离 子、 温度、 载体等众多因素的影响, 往往制得的是游离的纳米二氧化钛、载体、 担载有纳米二氧化钛的载体的混合物; 在一定的条件下, 也可以制得纳米二氧 化钛与载体的复合体, 如珠光云母, 但二氧化钛层和载体层之间无法形成牢固 的担载, 该复合材料经高速分散后纳米二氧化钛容易从载体上脱落。
本申请的发明人在 CN101676030A和 CN101 676031 A中揭示了在盐酸和高分子 化合物的协同作用下对四氯化钛进行二次水解, 在耐酸性非金属矿石表面上包 覆纳米二氧化钛层, 该方法无需高温煅烧。 在该方法中, 由于四氯化钛水解过 程中盐酸抑制了纳米颗粒的生长, 使得所形成的二氧化钛纳米颗粒的尺寸集中 在 1 0纳米的范围内, 因而纳米二氧化钛呈高度透明状态, 从而限制了二氧化钛 高折射率、 高遮盖力性能的发挥。 发明内容
本发明的一个目的是提供一种纳米二氧化钛层担载在无机非金属矿物载 体上的复合材料。
本发明的另一个目的是提供一种在无机非金属矿物载体上担载纳米二氧 化钛层的复合材料的制备方法, 该方法工艺简单、 制备成本低。
本发明的再一个目的是提供一种组合物, 该组合物包含二氧化钛层担载在 无机非金属矿物载体上的复合材料。
本发明还有一个目的是提供二氧化钛层担载在无机非金属矿物载体上的 复合材料的应用。
在本发明的第一方面, 提供了一种复合材料, 它包括作为载体的无机非金 属矿物和担载在该载体上的纳米二氧化钛层, 该层由多个二氧化钛纳米球组 成, 所述二氧化钛纳米球由多个二氧化钛纳米单颗粒组成。
本发明还提供了一种复合材料, 它包括作为载体的无机非金属矿物、 担载 在该载体上的纳米二氧化钛层、 以及担载在所述纳米二氧化钛层上的一层或多 层功能层, 所述纳米二氧化钛层由多个二氧化钛纳米球组成, 所述二氧化钛纳 米球由多个二氧化钛纳米单颗粒组成。
在上述复合材料中, 所述作为载体的无机非金属矿物是耐酸性的。
在上述复合材料中, 作为载体的无机非金属矿物是选自高岭土、 云母、 滑 石粉、 硫酸钡、 硅藻土、 膨润土、 蒙脱土、 白炭黑、 硅灰石、 沸石、 海泡石、 凹凸棒、 磁石中的一种或多种物质。
在上述复合材料中, 所述作为载体的无机非金属矿物的粒径在 0. 2- 100 μ πι 的范围内。
在上述复合材料中, 所述作为载体的无机非金属矿物的粒径在 1 -40 μ πι的 范围内。
在上述复合材料中, 所述二氧化钛纳米单颗粒的直径尺寸在 1-20纳米的范 围内, 所述二氧化钛纳米球的直径尺寸为所述二氧化钛纳米单颗粒直径尺寸的 2- 100倍。
在上述复合材料中, 所述二氧化钛纳米单颗粒的直径尺寸在 2- 10纳米的范 围内, 所述二氧化钛纳米球的直径尺寸为所述二氧化钛纳米单颗粒直径尺寸的 5- 50倍。
在上述复合材料中, 所述纳米二氧化钛层的担载量为所述无机非金属矿物 载体层重量的 1 -50%。
在上述复合材料中, 所述纳米二氧化钛层的担载量优选为所述无机非金属 矿物载体层重量的 5- 30%。
在上述复合材料中, 所述纳米二氧化钛层的担载量更优选为所述无机非金 属矿物载体层重量的 5- 20%。
在上述复合材料中, 所述功能层的担载量为所述无机非金属矿物载体层重 量的 0. 1 -20%。
在上述复合材料中, 所述纳米二氧化钛层牢固地担载于所述无机非金属矿 物载体层之上。
在上述复合材料中, 所述纳米二氧化钛层的牢固担载可用以下方法证实- 将 1克复合材料用 20克乙醇配制成 5%的混悬液, 用转速为 10000转 /分的高速分 散均质机分散 4小时, 再用乙醇将混悬液的浓度稀释为 0. 05%, 取 0. 02ml稀释液 作为样本, 用透射电子显微镜检测, 选择颗粒明显、 均匀且集中的区域, 分别 以 5, 000倍和 20, 000倍的放大倍率拍摄电镜照片, 从所得的各张电镜照片可见, 所述复合材料经高速分散均质机分散后, 均未出现游离的二氧化钛纳米球。
在上述复合材料中, 所述功能层选自紫外线屏蔽防护层、 阻燃层、 光催化 增强层、 抗菌层或光催化抗菌增强层。
所述紫外线屏蔽防护层包含选自氧化硅、 水合氧化硅、 氧化铝、 水合氧化 铝、 氧化锆的一种或多种氧化物。
所述阻燃层包含氢氧化镁。
所述光催化增强层包含氧化锌。
所述抗菌层包含银盐。
所述光催化抗菌增强层包含氧化锌和银盐。
所述银盐选自氯化银或磷酸银。
在本发明的第二方面, 提供了一种制备包括作为载体的无机非金属矿物和 担载在该载体上的纳米二氧化钛层的复合材料的方法, 该方法包括以下步骤- 在水、 无机酸和第一分散剂的存在下制备用作载体材料的无机非金属矿物 的分散悬浮液, 在水和第二分散剂的存在下制备四氯化钛水解液,
混合所述耐酸性非金属矿物的分散悬浮液和所述四氯化钛水解液, 使其反 应完全, 即得到权利要求 1所述的复合材料。
本发明还提供了一种制备包括作为载体的无机非金属矿物、 担载在该载体 上的纳米二氧化钛层、 以及担载在所述纳米二氧化钛层上的一层或多层功能层 的复合材料的方法, 该方法包括以下步骤:
( 1 )在水、 无机酸和第一分散剂的存在下制备用作载体材料的无机非金属 矿物的分散悬浮液, 在水和第二分散剂的存在下制备四氯化钛水解液, 混合所 述耐酸性非金属矿物的分散悬浮液和所述四氯化钛水解液, 使其反应完全, 制 得担载有二氧化钛层的无机非金属矿物复合材料,
(2)将制得的复合材料在水和第一分散剂的存在下分散制得混悬液, 将用 于制备功能层的原料加入到所述复合材料混悬液中, 使其反应完全, 以在复合 材料上担载一层新的功能层。
在上述方法中, 可重复所述步骤(2)以制得具有多层功能层复合材料。 在上述的复合材料的制备方法中, 所述第一分散剂是选自聚丙烯酸钠、 聚 丙烯酸铵、 聚丙烯酰胺、 碱金属聚憐酸盐、 聚羧酸、 聚羧酸钠、 十二垸基硫酸 钠、 十二垸基磺酸钠、 木质素磺酸钠、 铵盐分散剂、 聚酯分散剂、 聚醚分散剂 中的一种或多种。
在上述的复合材料的制备方法中, 所述第二分散剂是选自聚丙烯酰胺、 聚 乙烯醇、 聚丙烯酸钠、 聚丙烯酸铵、 聚羧酸、 聚羧酸钠、 铵盐分散剂、 聚酯分 散剂、 聚醚分散剂、 聚乙二醇类分散剂、 聚烯基醇分散剂、 聚酰亚胺类分散剂 或聚氨酯类分散剂中的一种或多种。
在上述的复合材料的制备方法中, 所述第一分散剂和所述第二分散剂可以 相同或不同。
在上述的复合材料的制备方法中, 在水、 无机酸和第一分散剂的存在下制 得的无机非金属矿物悬浮液是分散均匀的, 其固含量为 4- 50重量%; 无机酸占 悬浮液的 2. 5- 35重量%; 第一分散剂占悬浮液的 0. 01 -10重量%。
在上述的复合材料的制备方法中, 在水和第二分散剂的存在下制得的四氯 化钛水解液, 水与四氯化钛的重量比是(1 - 1 0) : 1 ; 第二分散剂占四氯化钛的 0. 5- 20重量%。
在上述的复合材料的制备方法中, 无机非金属矿物悬浮液和四氯化钛水解 液的混合比例是使得四氯化钛占无机非金属矿物的 2- 60重量%。
在上述的复合材料的制备方法中, 所述无机酸是无机强酸。
所述无机酸是选自硫酸、盐酸、硝酸中的一种, 或者是其中几种的混合酸。 在本发明的第三方面, 提供了一种组合物, 该组合物包含上述本发明的复 合材料。
所述组合物可以是涂料用组合物、 化妆品用组合物、 造纸用组合物、 粘合 剂组合物、 水处理用组合物、 塑料、 橡胶、 纤维、 陶瓷、 胶黏剂或水泥用组合 物。
本发明还提供了上述本发明的复合材料作为添加剂在工业上的应用。
所述应用是在造纸、 塑料、 涂料、 纤维、 化妆品、 橡胶、 陶瓷、 胶黏剂、 水泥或水处理的领域的应用。
本发明的复合材料与现有技术制得的类似复合材料相比, 担载的纳米二氧 化钛层的构造较为特殊, 该层由多个二氧化钛纳米球组成, 所述二氧化钛纳米 球又由多个二氧化钛纳米单颗粒组合而成。 而现有技术的复合材料中, 二氧化 钛层大多直接由多个二氧化钛纳米单颗粒组合而成。 对于本发明的复合材料, 由于多个二氧化钛纳米单颗粒组成纳米球这一特征, 使得纳米二氧化钛层不仅 能发挥高折射率、 高遮盖力的优势, 而且能发挥光催化活性, 拓宽了复合材料 的应用领域, 提高了最终产品的综合性能。 而且, 本发明的二氧化钛纳米球比 相同尺寸的现有技术二氧化钛纳米单颗粒具有更大的比表面能, 更容易包覆其 他功能层以制备功能加强型或多重功能的复合材料。
本发明制备复合材料的方法工艺简单、 成本低, 无需高温煅烧, 可制得担 载率较高的纳米二氧化钛层, 制得的复合材料中纳米二氧化钛层牢固地担载在 无机非金属矿物载体上。 本发明的复合材料具有广泛的用途, 例如可作为添加剂用于造纸、 塑料、 涂料、 纤维、 化妆品、 橡胶、 陶瓷、 胶黏剂、 水泥或水处理等领域, 相容性好。 附图说明
图 1是实施例 1制得的担载纳米二氧化钛层的绢云母复合材料用透射电镜 检测得到的透射电镜照片 (X 10000倍) ;
图 2是实施例 1制得的担载纳米二氧化钛层的绢云母复合材料用透射电镜 检测得到的透射电镜照片 (X 30000倍) ;
图 3是实施例 1制得的担载纳米二氧化钛层的絹云母复合材料用透射电镜 检测得到的透射电镜照片 (X 100000倍) ;
图 4是实施例 1制得的担载纳米二氧化钛层的绢云母复合材料用透射电镜 检测得到的透射电镜照片 (X 500000倍) ;
图 5和图 6显示了实施例 1制得的担载纳米二氧化钛层的绢云母复合材料进 行二氧化钛层担载牢度检测时经 10000转 /分高速均质机高速分散后不同区域 拍摄的透射电镜照片 (X 5000倍) ;
图 7是实施例 1制得的担载纳米二氧化钛层的絹云母复合材料进行二氧化 钛层担载牢度检测时经 10000转 /分高速均质机高速分散后的透射电镜照片 (X 20000倍) ;
图 8是实施例 2制得的担载纳米二氧化钛层的高岭土复合材料用透射电镜 检测得到的透射电镜照片 (X 20000倍) ;
图 9是实施例 2制得的担载纳米二氧化钛层的高岭土复合材料用透射电镜 检测得到的透射电镜照片 (X 30000倍) ;
图 10是实施例 2制得的担载纳米二氧化钛层的高岭土复合材料用透射电镜 检测得到的透射电镜照片 (X 50000倍) ;
图 1 1是实施例 2制得的担载纳米二氧化钛层的高岭土复合材料用透射电镜 检测得到的透射电镜照片 (X 500000倍) ;
图 12是实施例 3制得的担载纳米二氧化钛层的絹云母复合材料用透射电镜 检测得到的透射电镜照片 (X 20000倍) ;
图 13是实施例 3制得的担载纳米二氧化钛层的绢云母复合材料用透射电镜 检测得到的透射电镜照片 (X 50000倍) ;
图 14是实施例 3制得的担载纳米二氧化钛层的絹云母复合材料用透射电镜 检测得到的透射电镜照片 (X 10000倍) ;
图 15是实施例 3制得的担载纳米二氧化钛层的絹云母复合材料用透射电镜 检测得到的透射电镜照片 (X 200000倍) 图 16是实施例 4制得的功能性复合材料的紫外可见漫反射吸收光谱图。 具体实施方式
以下结合本发明的具体实施方式对本发明的内容作进一步详细的说明。 在本发明提供的复合材料中, 担载在无机非金属矿物载体上的纳米二氧化 钛层由多个二氧化钛纳米球组成, 所述二氧化钛纳米球又由多个二氧化钛纳米 单颗粒组合而成。 这种结构的纳米二氧化钛层具有比表面积大、 比表面能高、 表面悬空键多的特点, 且充分实现了纳米级分散, 真正发挥了纳米二氧化钛的 优势。 优选是, 二氧化钛纳米单颗粒的直径尺寸在 1-20纳米的范围内, 二氧化 钛纳米球的直径尺寸为二氧化钛纳米单颗粒直径尺寸的 2- 100倍。 更优选是, 二氧化钛纳米单颗粒的直径尺寸在 2- 10纳米的范围内, 二氧化钛纳米球的直径 尺寸为二氧化钛纳米单颗粒直径尺寸的 5- 50倍。 较好的是, 二氧化钛纳米球的 直径尺寸在 50- 150纳米的范围内。
本发明复合材料中的二氧化钛层不仅本身具有紫外线吸收、 光催化、 抗菌 的性能, 而且这些纳米二氧化钛单颗粒比表面积大、 表面原子多, 且这些原子 非常活跃, 很容易与其他原子结合。 利用这一特性, 可以在二氧化钛层上较为 容易地继续担载功能层, 制备功能复合材料。 当然, 也可以担载多层(含两层) 功能层, 制得多重功能复合材料。
担载在二氧化钛层上的功能层可以有很多, 包括但不限于: 紫外线屏蔽防 护层、 阻燃层、 光催化增强层、 抗菌层或光催化抗菌层。
紫外线屏蔽防护层包含选自氧化硅、 水合氧化硅、 氧化铝、 水合氧化铝、 氧化锆的一种或多种氧化物。 纳米二氧化钛层发挥了吸收紫外线的作用, 其外 层的紫外线屏蔽防护层用来隔离并钝化纳米二氧化钛层吸收紫外线后产生的 游离基与其应用领域产品的直接接触, 防止游离基氧化降解应用领域产品 (例 如涂料的树脂、 塑料有机物等) 。 也就是说, 二氧化钛层和紫外线屏蔽防护层 共同作用起到了屏蔽紫外线的作用。
阻燃层包含氢氧化镁。 在本发明复合材料的纳米二氧化钛层上进一步担载 氢氧化镁, 能有效地实现氢氧化镁阻燃材料的纳米分散, 制得具备阻燃功能的 复合材料。 此外, 也可以在上述担载在纳米二氧化钛层上的紫外线屏蔽防护层 上再担载阻燃层, 或者在担载在纳米二氧化钛层上的阻燃层上再担载紫外线屏 蔽防护层, 以形成具有紫外线屏蔽和阻燃多重功能的复合材料。 这种复合材料 在塑料和涂料领域有着广泛的用途。
光催化增强层包含氧化锌。 在本发明复合材料的纳米二氧化钛层上继续担 载光催化材料 (如氧化锌) , 氧化锌与纳米二氧化钛层协同作用, 可以进一步 激活光催化活性, 从而制得性能更为优异的光催化材料。
抗菌层包含银盐。 银盐优选是氯化银或磷酸银。 通过担载抗菌层能增强复 合材料的暗光抗菌、 防霉效果。
同样, 本发明的复合材料中可同时担载光催化增强层和抗菌层, 以制得具 有光催化和暗光抗菌、 防霉双重功能的复合材料。 此外, 也可将光催化材料和 抗菌材料混合制备光催化抗菌层, 通过在二氧化钛层上只担载一层光催化材料 和抗菌材料的混合物层, 即实现光催化抗菌防霉又实现暗光抗菌防霉双重功 能。
此外, 本发明复合材料的纳米二氧化钛层中, 由纳米单颗粒组合而成的二 氧化钛纳米球具有较高的折射率, 其不透明性增强, 因而与无机非金属矿物载 体形成的复合材料本身具有较高的遮盖力, 能非常有利地用于塑料、 涂料等领 域替代部分钛白粉。
上述功能层以及各功能层的组合只是示例性的, 并非穷举。 本领域的技术 人员可以根据具体用途和需要, 选择合适的功能层及其组合并进行制备。
本发明所述的 "纳米二氧化钛层" , 可以是完全包覆无机非金属矿物载体 的表面, 也可以是部分包覆无机非金属矿物载体的表面。 纳米二氧化钛层完全 包覆载体表面的情况下, 载体表面基本上全部担载有二氧化钛纳米球。 纳米二 氧化钛层部分包覆载体表面的情况下, 二氧化钛纳米球散布在载体表面上, 也 就是说, 一部分载体表面上担载有二氧化钛纳米球, 还有一部分载体表面是裸 露的。 纳米二氧化钕层的包覆程度取决于纳米二氧化钛层相对于无机非金属矿 物载体层的担载量。担载量通常根据不同的需求(包括用途和成本方面的需求) 加以确定。
在本发明一个较优选的实施方案中, 本发明的复合材料如下制得: 在水、 无机酸和第一分散剂的存在下分散用作载体材料的无机非金属矿 物, 搅拌形成均匀分散的悬浮液 (更优选是在 50- 100°C下搅拌) , 该悬浮液的 固含量为 4-50重量% (更优选是 10-35重量%) , 无机酸占悬浮液的 2. 5- 35重量 % (更优选是 2. 5-15重量%), 第一分散剂占悬浮液的 0. 01 - 10重量% (更优选是 0. 1 - 3重量%) ;
在水和第二分散剂的存在下制备四氯化钛水解液, 水与四氯化钛的重量比 是(1 - 1 0) : 1; 第二分散剂占四氯化钛的 0. 5- 20重量%, 更优选是, 水与四氯化 钛的重量比是(1 -8) : 1 ; 第二分散剂占四氯化钛的的 0. 5-10重量%;
将无机非金属矿物的悬浮液和四氯化钛水解液进行混合 (较优选是将四氯 化钛水解液加入无机非金属矿物的悬浮液中) , 使其反应完全, 即得到在无机 非金属矿物载体上担载有二氧化钛层的复合材料, 经过滤清洗 (优选是清洗至 滤液的 pH值为 4- 7 ) , 得到复合材料产品。 更优选是, 无机非金属矿物悬浮液 和四氯化钛水解液的混合比例是使得四氯化钛占无机非金属矿物的 2-60重量 %, 特别优选是 4-40重量%。
在本发明另一个较优选的实施方案中, 本发明具有功能层的复合材料如下 制得: 将如上获得的在无机非金属矿物载体上担载有纳米二氧化钛层的复合材 料产品在水和第一分散剂的存在下分散制得混悬液 (更优选是在 50- 10(TC下搅 拌) , 该混悬液的固含量为 10-30重量%, 将该混悬液的 pH值调整至 4-1 1的范围 内, 将用于制备功能层的原料加入其中, 使其反应完全, 经过滤干燥, 得到在 二氧化钛层上再担载有功能层的复合材料。
在上述实施方案中, 用于制备功能层的原料可以根据所需的功能不同加以 选择。 例如, 用于制备紫外线屏蔽防护层的原料可以是硅源、 铝源和 /或锆源。 硅源可以是硅酸钠、 水玻璃、 硅溶胶中的一种或两种以上的混合物; 铝源可以 是氯化铝、 硫酸铝、 偏铝酸钠等中的一种或两种以上的混合物; 锆源可以是氧 氯化锆、 硫酸锆或硫酸氧锆中的一种或两种以上的混合物。 又如, 用于制备阻 燃层的原料可以是镁源。 镁源可以是硫酸镁、 氯化镁等可溶性镁盐。 在向所述 混悬液中根据需要加入上述原料的同时, 加入相应的酸、 碱或盐, 通过反应得 到相应的功能层。 相应的酸可以是硫酸、 盐酸、 硝酸中的一种或两种以上的混 合物; 相应的碱可以氢氧化钠、 氢氧化钾、 氨水中的一种或两种以上混合物; 相应的盐可以是氯化钾、 氯化钠或氯化铵等氯盐。
在本发明的较优选实施方案中, 第一分散剂是选自聚丙烯酸钠、 聚丙烯酸 铵、 聚丙烯酰胺、 聚碱金属磷酸盐(如三聚磷酸钠、 六偏磷酸钠或焦磷酸钠) 、 聚羧酸、 聚羧酸钠、 十二垸基硫酸钠、 十二垸基磺酸钠、 木质素磺酸钠、 铵盐 分散剂、 聚酯分散剂、 聚醚分散剂中的一种或多种; 第二分散剂是选自聚丙烯 酰胺、 聚乙烯醇、 聚丙烯酸钠、 聚丙烯酸铵、 聚羧酸、 聚羧酸钠、 铵盐分散剂、 聚酯分散剂(如脂肪酸聚乙二醇酯分散剂) 、 聚醚分散剂、 聚乙二醇类分散剂、 聚烯基醇分散剂、 聚酰亚胺类分散剂或聚氨酯类分散剂中的一种或多种; 第一 分散剂和第二分散剂可以相同或不同。
本发明的复合材料可用于造纸、 塑料、 涂料、 纤维、 化妆品、 橡胶、 陶瓷、 胶黏剂、 水泥或水处理等领域。 使用方法与常规颜料钛白粉或无机填料 (如滑 石粉、 绢云母、 高岭土、 钛白粉、 硫酸钡等)的使用方法大致相同, 本发明复 合材料的添加量一般为 1 -20重量%。 本发明复合材料不仅可以作为一款普通无 机填料应用在上述领域, 同时在一定程度上又可以替代上述领域产品中的部分 钛白粉, 还能赋予产品紫外屏蔽、 阻燃、 光催化和 /或抗菌等功能。
下面结合具体实施例, 进一步阐述本发明。 应理解, 这些实施例仅用于说 明本发明而不用于限制本发明的范围。 下列实施例中未注明具体条件的实验方 法, 通常按照常规条件, 或按照制造厂商所建议的条件进行。 除非另外说明, 否则所有的份数为重量份, 所有的百分比为重量百分比。 实施例 1
将 1250目絹云母 400克加入到 1 100克水, 70克硫酸、 1. 6克六偏磷酸钠, 0. 4 克聚丙烯酰胺配成的混合溶液中, 于 80-9CTC搅拌形成均匀分散的悬浮液; 称 取 50克四氯化钛, 将含有 3克聚乙二醇 1200、 1克聚乙烯醇 (PVA)、 0. 5克聚酰 亚.胺分散剂的水溶液 1 10克滴加入四氯化钛, 配制稳定的四氯化钛水解液; 将 四氯化钛水解液滴加入含絹云母的悬浮液中, 反应 4小时后, 过滤水洗至滤液 的 PH值接近 4, 得到复合材料滤饼, 干燥后即得功能性复合材料 1。
对所得的复合材料产品进行如下观察和检测。 担载量检测
按 GB\T 1706-2006标准, 用金属铝还原法对实施例 1得到的复合材料的二 氧化钛担载量进行检测, 得到二氧化钛担载量为 5%。 复合材料透射电镜检测
将所得复合材料产品以 0. 05%- 0. 1%的浓度分散在乙醇溶剂中, 在超声波中 超声 20分钟, 得到均一混悬液。 将该混悬液滴加在铜网上, 在高倍透射电镜下 观察。 图 1至图 4分别是放大倍率为 X 10000、 X 30000、 X 100000、 X 500000时 的电镜照片。 从这些照片可见, 实施例 1制得的复合材料产品是在絹云母载体 1 上担载有纳米二氧化钛层, 该二氧化钛层由多个二氧化钛纳米球 2组成, 这些 二氧化钛纳米球又由多个二氧化钛纳米单颗粒 3组成。 由二氧化钛纳米单颗粒 的直径尺寸为 4- 8纳米, 二氧化钛纳米球的直径尺寸为 50-85纳米。 此外, 在高 倍透射电镜下未发现游离的二氧化钛纳米粒子。 检测二氧化钛层的担载牢度
将实施例 1制得的复合材料 1克用 20克乙醇配制成 5%的混悬液, 用转速为 10000转 /分的高速分散均质机分散 4小时, 再用乙醇将混悬液的浓度稀释为 0. 05% , 取 0. 02ml稀释液作为样本, 用透射电子显微镜检测, 选择颗粒明显、 均匀且集中的区域, 分别以 X 5000和 X 20000的放大倍率拍摄电镜图, 得到图 5 至图 7的电镜照片, 其中, 图 5和图 6显示了以 5000倍的放大倍率在不同区域拍 摄的透射电镜照片。 从这些照片可以直观地看到, 实施例 1制得的复合材料经 高速分散均质机分散后, 未出现明显的游离二氧化钛纳米球。 由此表明, 纳米 二氧化钛层牢固地担载于絹云母片层表面之上。 实施例 2
将 800目高岭土 500克加入到 2000克水, 300克盐酸, 50克硫酸、 2克六偏磷 酸钠, 1克聚醚 L61 (广州市成飞达贸易有限公司)配成的混合溶液中, 于 80-90 °C搅拌形成均匀分散的悬浮液; 称取 240克四氯化钛, 将含有 6克聚羧酸盐 TH-361 (山东泰和水处理有限公司) 、 3克聚乙二醇 1200、 1克聚乙烯醇 (PVA) 的水溶液 1900克滴加入四氯化钛, 配制稳定的四氯化钛水解液; 将四氯化钛水 解液滴加入含高岭土的悬浮液中, 反应 6小时后, 过滤水洗至滤液的 PH值至 5, 得到复合材料滤饼, 干燥后即得功能性复合材料 2。
对所得的复合材料产品进行如下观察和检测。 担载量检测
按 GB\T 1706-2006标准, 用金属铝还原法对实施例 2得到的复合材料的二 氧化钛担载量进行检测, 得到二氧化钛担载量为 19. 5%。 复合材料透射电镜检测
将所得复合材料产品以 0. 05%- 0. 1 %的浓度分散在乙醇溶剂中, 在超声波中 超声 20分钟, 得到均一混悬液。 将该混悬液滴加在铜网上, 在高倍透射电镜下 观察。 图 8至图 1 1分别是放大倍率为 X 20000、 X 30000, X 50000、 X 500000时 的电镜照片。 从这些照片可见, 实施例 2的制得的复合材料产品是在高岭土载 体 4上担载有纳米二氧化钛层, 该二氧化钛层由多个二氧化钛纳米球 2组成, 这 些二氧化钛纳米球又由多个二氧化钛纳米单颗粒 3组成。 二氧化钛纳米单颗粒 的直径尺寸为 2- 10纳米, 二氧化钛纳米球的直径尺寸为 120- 200纳米。 此外, 在高倍透射电镜下未发现游离的二氧化钛纳米粒子。 实施例 3
将 800目絹云母 600克加入到 1 100克水, 40克盐酸, 10克硫酸, 6克六偏磷 酸钠, 2克聚羧酸盐 GY-D06 (屮化化工科学技术研究院)配成的混合溶液中, 于 85- 95 °C搅拌形成均匀分散的悬浮液; 称取 200克四氯化钛, 将含有 1克聚乙二 醇 1200、 0. 4克聚乙烯醇 (PVA)、 0. 6克聚乙二醇月桂酸酯 PEG200ML (江苏海安 石油化工厂)的水溶液 600克滴入四氯化钛中, 配制稳定的四氯化钛水解液; 将 四氯化钛水解液滴加入含绢云母的悬浮液中, 反应 4小时后, 过滤水洗至滤液 的 PH值至 7 , 得到复合材料滤饼, 干燥后即得功能性复合材料 3。
对所得的复合材料产品进行如下观察和检测。 担载量检测
按 GB\T 1706-2006 标准, 用金属铝还原法对实施例 3得到的复合材料的二 氧化钛担载量进行检测, 得到二氧化钛担载量为 12%。 复合材料透射电镜检测
将所得复合材料产品以 0. 05%- 0. 1%的浓度分散在乙醇溶剂中, 在超声波中 超声 20分钟, 得到均一混悬液。 将该混悬液滴加在铜网上, 在高倍透射电镜下 观察。图 12至图 14分别是放大倍率为 X 20000、 X 50000、 X 10000时的电镜照片。 从这些照片可见, 实施例 3制得的复合材料产品是在绢云母载体 1上担载有纳米 二氧化钛层, 该二氧化钛层由多个二氧化钛纳米球 2组成, 这些二氧化钛纳米 球又由多个二氧化钛纳米单颗粒 3组成。 二氧化钛纳米单颗粒的直径尺寸为 2-10纳米, 二氧化钛纳米球的直径尺寸为 150-250纳米。 此外, 在高倍透射电 镜下未发现游离的二氧化钛纳米粒子。 实施例 4 (担载紫外线屏蔽防护层)
将实施例 1中获得的复合材料 400克加入 1200克水中打浆, 同时加入 0. 2克 聚丙烯酸钠, 0. 4克焦磷酸钠, 搅拌制备分散均匀的混悬液, 将混悬液加热至 8(TC, 加入 10%氢氧化钠调节 PH值到 10 , 将 150克浓度为 10%的硅酸钠水溶液加 入混悬液, 同时再加入 10%的硫酸水溶液, 维持 PH=10不变。 滴加完成后, 降温 至 70°C,加入 10%的硫酸溶液调节 PH值到 8, 将 120克浓度为 4%的二氯氧锆继续加 入混悬液中, 同时加入 10%的硫酸水溶液, 维持 PH不变, 待滴加完成后,将浆料 过滤、 水洗, 滤饼在 150°C下干燥 8小时, 粉碎至 1250目, 制得功能性复合材料 4„
按紫外和可见吸收光谱方法通则 JY/T022-1996的方法, 用紫外可见近红外 分光光度计 (UV- Vi s- NIR Spectrophotometer ) 检测本实施例制得的功能性复 合材料的紫外可见漫反射吸收性能, 所得光谱图示于图 15。 由图 15可见, 该功 能性复合材料能很好地吸收波长在 200-380ntn范围内的紫外光, 因而具有很好 的紫外线屏蔽功能。 实施例 5 (担载紫外线屏蔽防护层和阻燃层)
将实施例 2屮获得的复合材料 400克加入 1200克水中打浆, 同时加入 0. 6克 聚丙烯酸钠, 0. 4克六偏磷酸钠搅拌制备分散均勾的混悬液, 将混悬液加热至 80°C, 加入 10%氢氧化钠调节 PH值到 10, 将 120克浓度为 10%的硅酸钠水溶液加 入混悬液, 同时再加入 10%的硫酸水溶液, 维持 PH=10不变。 滴加完成后, 降温 至 70Ό,加入 10%的硫酸溶液调节 PH值到 5, 将 90克浓度为 10%的偏铝酸钠继续加 入混悬液中, 同时加入 10%的硫酸水溶液, 维持 PH不变, 待滴加完成, 用 10%的 氢氧化钠调节 PH值到 8, 维持该 PH和温度不变, 将 240克浓度为 15%的氯化镁溶 液继续加入混悬液, 同时加入 10%的氢氧化钠, 维持 PH不变。
待滴加完成后,将浆料过滤、水洗,滤饼在 150Ό下干燥 8小时,粉碎至 1 250 目, 制得功能性复合材料 5。 实施例 6 (担载光催化增强层)
将实施例 2中获得的复合材料 400克加入 1200克水中打浆, 同时加入 0. 6克 聚丙烯酸钠, 0. 4克六偏磷酸钠搅拌制备分散均匀的混悬液, 将混悬液加热至 80°C, 加入 10%氢氧化钠调节 PH值到 8, 将 40克浓度为 5%的氯化锌水溶液加入混 悬液, 同时再加入 7%的氢氧化钠溶液, 维持 PH=8不变, 滴加完成后, 将浆料过 滤、 水洗, 滤饼在 150 下干燥 8小时, 粉碎至 1250目, 制得功能性复合材料 6。 实施例 7 (担载抗菌层)
将实施例 3中获得的复合材料 400克加入 1200克水中打浆,同时加入 0. 2 克聚丙烯酸钠, 0. 4 克焦磷酸钠, 搅拌制备分散均匀的混悬液, 将混悬液加热 至 80°C, 加入 10%氢氧化钠调节 PH值到 8, 将 50克浓度为 1 %的硝酸银水溶液 加入混悬液, 同时再加入 3%氯化钠水溶液, 维持 PH=8不变, 滴加完成后, 降 温至 70Ό ,将浆料过滤、 水洗, 滤饼在 150°C下干燥 8小时, 粉碎至 1250目, 制得功能性复合材料 7。 实施例 8 (担载光催化抗菌层)
将实施例 3中获得的复合材料 400克加入 1200克水中打浆,同时加入 0. 6 克聚丙烯酸钠, 0. 4 克六偏磷酸钠搅拌制备分散均匀的混悬液, 将混悬液加热 至 80°C, 加入 10%氢氧化钠调节 PH值到 8, 将 40克浓度为 5%的氯化锌水溶液 加入混悬液, 同时再加入 7%的氢氧化钠溶液和 50克浓度为 1%的硝酸银, 维持 PH=8不变, 滴加完成后, 将浆料过滤、 水洗, 滤饼在 1 50 °C下干燥 8小时, 粉 碎至 1250目, 制得功能性复合材料 8。 实施例 9 (功能性复合材料 4在化妆品中的应用, 以粉底霜为应用例) 将实施例 4制得的功能性复合材料 4作为化妆品用添加剂, 按以下配方制备 防晒乳液。
Figure imgf000015_0001
将硬脂酸、十六醇、白油、聚氧乙烯油酸酯在不断搅拌条件下,加热至 70 - 75 。C, 使其充分熔化或溶解均匀制备成均一油相待用。
将功能性复合材料 4、 滑石粉、 硅酸铝镁加入 20克水中, 搅拌分散 30分钟, 使其分散均匀, 再将 Span-80、 三乙醇胺、 丙二醇、 聚乙二醇、 37克水加入其 屮, 搅拌加热至 90-100Ό,维持 20分钟灭菌, 然后冷却至 70- 75°C, 制备成所需 水相体系; 在搅拌条件下, 维持 70- 75 Ό, 将制备好的油相缓慢加入水相体系, 制备成油 /水型防晒乳液, 再将防腐剂和香精缓慢加入, 即可。
将制得的含功能性复合材料 4的防晒乳液按 IS0/TR 26369 : 2009 《化妆品- 防晒效能测试方法 -对防晒用化妆品光防护性能测试方法的综述与评估》 ,进行 检测, 该防晒乳液的的防晒系数为 SPF15。 结果证明, 该功能性复合材料在化 妆品中添加, 能赋予产品物理防晒的功效。 实施例 10 (功能性复合材料 4在涂料中的应用, 以外墙乳胶漆为应用例) 将实施例 4制得的功能性复合材料 4作为涂料用添加剂, 按以下配方制得乳 胶漆。 水 129 克
羟乙基纤维素增稠剂(2%) 140 克
防腐剂 Parmentol 1 . 5 克
润湿分散剂 Calgon N 2. 5 克
润湿剂 enapon PN30 3 克
消泡剂 Agi tan 280 4 克
重质碳酸钙 120 克
滑石粉 125 克
绢云母粉 24 克
钛白粉 80 克
功能性复合材料 4 40 克
氨水 (25%) 1克
成膜助齐1 J Texamol 20克
丙二醇 20克
乳液 Acrona l 290 D 270克 先将滑石粉、 钛白粉、 功能性复合材料 4、 重质碳酸钙、 絹云母、 防腐剂, 消泡剂、 润湿分散剂、 润湿剂 enapon、 70克水在高速分散机上高速分散 1小时, 再加入乳液 Acronal 290 D、 成膜助剂、 丙二醇、 增稠剂、 59克水等搅拌 1小时 后, 用 25%的氨水调节 PH=7- 8, 制得乳胶漆。 对比例 1 (完全使用钛白粉作为添加剂的乳胶漆)
按实施例 10相同的方法制备乳胶漆, 不同的是用 120克钛白粉代替 80克钛 白粉和 40克功能性复合材料 4。 对实施例 10和对比例 1制得的乳胶漆按 GB/T9755- 2001 《合成树脂乳液外墙 涂料》 进行如下性能测试, 结果如下: 性能测试项目 实施例 10 对比例 1 对比率 (白度和浅色) 0.933 0.938 干燥时间 (表干) /h 2小时 2小时 耐水性 (96h) 无异常 无异常 白度 93.4 94.2 耐人工老化 600h 600h 粉化 /级 1 1 变色 /级 2 2 耐洗刷性 〉5000次 〉5000次 低温稳定性 不变质 不变质 由此可见, 功能性复合材料在乳胶漆中可以替代一部分钛白粉, 从而降低 乳胶漆的制造成本, 而乳胶漆的性能不变。 实施例 11 (功能性复合材料 8在涂料中的应用, 以粉末涂料为应用例) 环氧树脂 Araldite7004(Ciba- Geigy公司) 64.38克
流平剂 modaf]ow(Ciba- Geigy公司) 0· 32克
二氧化钛 24.2克
功能材料 8 8克
固化剂 ΗΤ- 2833 ((Ciba- Geigy公司) 3· 1克
将流平剂按 10%的比例预分散在环氧树脂中, 然后将该混合组分粉碎 到颗粒直径为 3-5mni。 将环氧树脂也同样粉碎至颗粒直径为 3-5mni, 按配方将全 部组分预混合 10分钟, 再将此均匀混合物加到挤压机内挤压, 机腔内温度为 75 °C-85°C, 挤出头温度为 95°C, 挤出物冷却进行细粉碎。 对比例 2 (完全使用钛白粉作为添加剂的粉末涂料)
按实施例 11相同的方法制备粉末涂料, 不同的是用 32.2克钛白粉代替 24.2 克钛白粉和 8克功能性复合材料 8。 将实施例 11和对比例 2制得的环氧粉末涂料分别进行静电喷涂, 对涂层按 标准 GB/T21776-2008《粉末涂料及其涂层的检测标准指南》进行如下性能测试, 结果如下: 性能测试项目 实施例 1 1 对比例 2 遮盖力 (对比率) 0. 941 0. 943 白度 92 93 耐冲击性 正反冲通过 正反冲通过 外观 平整光滑 平整光滑 涂膜厚度 65-70um 65-70um 光泽度 ^85 ^85 杀菌率
金黄色葡萄球菌 >99% 〉24% 大肠杆菌 >99% >31% 白色念珠菌 >93% 0
24小时甲醛降解率 83% 33. 4% 由此可见, 粉末涂料中添加一种具有抗菌、 降解甲醛等有害物功效的功能 性复合材料 8, 在粉末涂料性能不受影响的前提下, 不仅可以替代一部分钛白 粉, 同时赋予粉末涂料抗菌、 净化空气的效果。 实施例 12 (复合材料 5在塑料中的应用, 以 ABS塑料 (丙烯腈-丁二烯- 苯乙烯塑料为例)
配方组成(质量份数): ABS树脂 300克
复合材料 5 240克
硅垸偶联剂 KH550 0. 24克
将 ABS树脂、 硅垸偶联剂、 复合材料 5放人高速搅拌机中, 搅拌 5分钟, 用反应型双螺杆挤出机组挤出造粒, 挤出机各段温度为 200-240°C, 将挤出的 粒料在 150°C的双辊塑炼机上混炼, 然后压制成型, 成型温度为 170°C, 预热 时间 2分钟, 保压时间为 5分钟, 压力为 55MPa。 对比例 3 (不加复合材料 5的塑料 ABS制品)
按实施例 12相同的方法, 不加复合材料 5直接制备 ABS塑料制品。 将实施例 12和对比例 3制得的 ABS塑料粒料压制成型后, 对 ABS塑料压片后 按标准 GB/T2406-1993 《塑料燃烧性能试验方法: 氧指数法》 , 《塑料燃烧性 能试验方法: 烟密度试验方法》 垂直燃烧按 GB /T 4609-1984测试;水平燃烧按 GB /T 2408- 1996测试。
进行如下性能测试, 结果如下:
Figure imgf000019_0001
由此可见, 在塑料 ABS中添加具有阻燃功效的功能性复合材料 5, 可以明 显提高塑料的氧指数, 减少黑烟。 实施例 1 3 (复合材料 6化纤中的应用, 以聚丙烯无纺布为例)
配方组成:
功能性复合材料 6 3克
钛酸酯偶联剂 0. 1克
液腊 0. 3克
硬脂酸锌 0. 2克
聚丙酸腊 20克
聚丙烯树脂 76. 4克 将 26. 4克的聚丙酸树脂、 3克功能性复合材料 6、 0. 1克的钛酸酯偶联剂 高速搅拌活化 1 5分钟, 再加入 0. 3克液腊、 0. 2克硬脂酸锌、 20克聚丙酸腊、 充分搅拌使所有物料混合均匀, 经母粒造粒机制成含功能性复合材料 6的改性 聚丙烯母粒。 将所得母粒与 50 克聚丙烯树脂均匀混合, 将混合物在螺旋挤压 机中熔融, 再经纺丝、 牵伸、 成网后再热轧制成含 3%功能性复合材料 6的聚丙 烯无纺布, 该无纺布具有抗菌、 防霉的功效。 对比例 4 (不加功能性复合材料 6的聚丙烯无纺布制品)
按实施例 12相同的方法, 不加复合材料 6和钛酸酯偶联剂直接制备聚丙 烯无纺布。 按 BG/T 23763-2009 1光催化抗菌材料及制品抗菌性能的评价对实施 例 1 3和对比例 4进行抗菌检测 杀菌率 实施例 13 对比例 4 金黄色葡萄球菌 〉99% 0 大肠杆菌 >99% 0 白色念珠菌 >93% 0 由此可见, 在无纺布中添加具有光催化功效的功能性复合材料 6, 可以赋 予无纺布抗菌的功效。 实施例 14 复合材料 4在纸张中的应用, 以涂布纸为应用例
实验原料
原纸(白纸板) : 定量 22518 g.m2 , 紧度 0.75g. m3 , 白度 75.72 %, 不透 明度 98.63 %, PPS 粗糙度 7.44 μπι ; 光泽度 11.7 %。
底涂配方:
重质 CaC03 80克, 高岭土 20克, 聚丙烯酸钠 0.4克, 丁苯胶乳(SBR) 10克, 羟甲基纤维素 ( CMC ) 0.4克%, 硬脂酸钙 0.4克, 丁醇 0.2克, 辛醇 0.1克, 淀粉 6克, 底涂固含为 60%
底涂配制:
将重质 CaC0380克, 高岭土 20克, 聚丙烯酸钠 0.4克, 30克水, 用高速分散 机分散 30分钟。
将淀粉分散搅拌分散在 6克 70°C水中。
将配好的上述两种预分散原料与剩余的原料, 加水搅拌混合, 制备成固含 60%的底涂, 备用。
面涂配方:
高岭土 60克, CaC03 20克, 功能性复合材料 4 20克, 分散剂, 六偏磷酸钠 0.4克, 丁苯胶乳(SBR) 用量 13克, 羟甲基纤维素 ( CMC ) 用量 0.5克, 硬脂 酸钙 0.5克, 丁醇消泡剂用量 0.2克, 辛醇 0.1克, 制备成固含 50%的面涂, 备用。
涂布与干燥压光
在 K303 涂布机上进行涂布操作, 底涂涂布量为 S Og/ni2, 面涂涂布量为
10 - 12g/m2。 采用热风干燥, 烘千温度控制在 105°C。 压光前涂布纸需经过调湿 处理。 对比例 5 (涂布纸配方中不加功能性复合材料 4, 用高岭土替代上述配方 屮的复合材料) 按实施例 14相同的方法制备底涂和面涂, 不同的是用 20克高岭土代替 20克 复合材料 4 涂布纸性能检测
实施例 14和对比例 5制备的涂布纸的物理性能测定按国家标准 GB - T
10335.4-2004 《 涂布纸和纸板 涂布白纸板》 进行检测
Figure imgf000021_0001
由此可见, 在涂布纸中添加功能性复合材料 4, 能有效地利用微米颗粒上 担载的纳米颗粒的性能, 如比表面积大, 表面能高的特点, 有效地改善纸张涂 层的性能。 实施例 15 功能性复合材料 6在纸张中的应用 (采用浆内添加的方法添加 功能性复合材料 6)
工艺:
按针叶浆(45° SR) : 阔叶浆(25° SR)=40: 60 的比例打浆, 设计抄纸浆料 120g/ m2, 将称量好的纸浆搅拌 1 分钟后, 加入功能性复合材料 6, 加填量为 30% (以绝干浆计), 搅拌 1 分钟, 再加 500 pptn的聚丙烯酰胺, 搅拌 30秒后 取下, 在方型抄片器上抄片, 任 0.3 Mpa的压力下压光一次, 在 105°C烘箱熟 化 20 分钟常温下平衡水分, 得到添加具有抗菌功效的功能纸。 对比例 6: (在浆内添加高岭土替代功能性复合材料 6)
按实施例 14相同的方法采用浆内添加高岭土制备纸张。
按 BG/T 23763-20091 《光催化抗菌材料及制品 抗菌性能的评价》 标准对 实施例 15和对比例 6进行抗菌检测。
鹏 实施例 15 对比例
6 金黄色葡萄球菌 >99% 0 大肠杆菌 >99% 0 白色念珠菌 〉94% 0 实施例 1 6: 功能性复合材料 7在胶黏剂中的应用, 以氯丁橡胶胶黏剂为例 建筑用氯丁橡胶胶黏剂
配方:
高黏度非硫调节型氯丁橡胶 1 00份
防老剂 RD ( 2 , 2, 4-三甲基 1, 2-二氢化喹聚合体 ) 2份
功能性复合材料 7 4份.
氧化镁 6份
硅酸钙 10份
叔丁基酚醛树脂 60份
溶剂 适量
(固含量一般为 20 %— 30 %, 溶剂 40%甲苯、 30%醋酸乙酯与 30%汽油的混合 溶剂)。
开炼机混炼法。 在开炼机上, 首先将氯丁橡胶数混炼数次, 然后将功能性 复合材料 7、 氧化镁、 硅酸钙填料混入生胶, 制成混炼胶; 将树脂溶于溶剂中, 再在搅拌下将混炼胶溶解于其中,将其他组分一齐加入,制备成均匀的胶黏剂。 对比例 7 (不加功能性复合材料 7, 配方中增加防老剂和氧化锌填料) 配方- 高黏度非硫调节型氯丁橡胶 100份
防老剂 RD ( 2, 2, 4-三甲基 1, 2-二氢化喹聚合体 ) 2份
氧化锌 4份
氧化镁 6份
硅酸钙 10份
叔丁基酚醛树脂 60份
溶剂 适量
(固含量一般为 20 %— 30 %, 溶剂 40%甲苯、 30%醋酸乙酯与 30%汽油的混合 溶剂)。
在开炼机上, 首先将氯丁橡胶熔融, 然后将功能性复合材料 7、 氧化镁、 硅 酸钙填料混入生胶, 制成混炼胶; 将树脂溶于溶剂中, 再在搅拌下将混炼胶溶 解于其中, 将其他组分一齐加入, 制备成均匀的胶黏剂。 检测:
按 GB / T1 2954-1991 《建筑胶黏剂通用试验方法》 对黏胶剂实施例 1 6和对 比例 7进行检测, 抗菌性参照 GB/T21866- 2008 《抗菌涂料 (漆膜) 抗菌性测定 法和抗菌效果》进行检测, 防霉参照 JISZ 291 1-1992《抗霉性试验方法》检测。
Figure imgf000023_0001
由此可见, 功能性复合材料在胶黏剂可以作为一种无机填料等量取代胶黏 剂中的无机填料, 胶黏剂性的性能不变, 同时赋予胶黏剂抗菌、 防霉的效果 实施例 17 功能性复合材料 6在水泥中的应用(以可涂覆在建筑物立面和 地坪抹面砂浆面层的水泥砂浆为例)
配方:
42. 5级的普通水泥 94千克
功能性复合材料 6 10千克
沙 (粒径小于 0. 63 mm ) 290千克
萘系减水剂 (萘磺酸盐甲醛缩合物) 0. 5千克
乙烯-乙酸乙烯共聚乳胶粉 4. 5千克
水 55千克 制备工艺- 将功能性复合材料 6与水用高速分散机分散 30分钟, 将分散液与水泥、 沙、 萘系减水剂、 乙烯-乙酸乙烯共聚乳胶粉混合搅拌均匀即可, 将制备好的水泥 泥浆涂覆在 50cmX50cm的玻璃板上, 自然干透。 对比例 8 : (不添加功能性复合材料 6 )
42. 5级的普通水泥 94千克
沙 (粒径小于 0. 63 mm ) 290千克
萘系减水剂 (萘磺酸盐甲醛缩合物) 0. 5千克
乙烯-乙酸乙烯共聚乳胶粉 4. 5千克
水 55千克 制备工艺:
将水泥、 沙、 萘系减水剂、 乙烯-乙酸乙烯共聚乳胶粉混合搅拌均匀即可, 将制备好的对比例水泥泥浆涂覆在 50cmX50cm的玻璃板上, 自然干透。
将制备好的涂覆水泥浆的玻璃板按 GB/T 23761 -2009 《光催化空气净化材 料性能测试方法》 测试样板净化 24小时净化空气的性能。
Figure imgf000024_0001
由此可见, 添加功能性复合材料 6的水泥泥浆具有良好的净化空气的性能, 如涂覆在建筑物立面或地坪抹面砂浆面层上可以制备成具有净化空气的功能 产品。 实施例 18 功能性复合材料 4在橡胶中的应用 (以丁苯橡胶为例)
配方:
功能性复合材料 4 50克
丁苯橡胶 1 500 100克
氧化锌 3克
硬脂酸 1克
二硫化四甲基秋兰姆 1克
硫磺 1. 74克
N-环己基硫化邻苯 0. 2克
4辛氧基二苯甲酮 0. 5克
防老剂 AW 1克 制备工艺: 将生胶丁苯橡胶 1500在开炼机中按落盘薄通的方式混炼, 将生 胶、 氧化锌、 二硫化四甲基秋兰姆、 硬脂酸、 N-环己基硫化邻苯、 4辛氧基二 苯甲酮、 防老剂 AW、 功能性复合材料 4、 硫磺在混炼机中薄通数次后均匀下片, 混炼时间 12- 15分钟。 用硫化仪测定正硫化点, 硫化条件为 153 °C, 在正硫化点 时间进行硫化。 在硫化即上模压成型, 制成橡胶 /多功能性复合材料的试片。 对比例 9 (不加功能性复合材料 4, 纯丁苯橡胶)
配方与实施例 18相似, 只是将实施例 18中的功能性复合材料 4去除, 用相 同的方法制备纯丁苯橡胶。 将所得的橡胶试片力学性能按标准 GB 6037-1985 《硫化橡胶高温拉伸强度 和扯断伸长率的测定 》、 GB/T 528-1998《拉伸应力应变性能》、 GB/T 528-1999 《撕裂强度测试》 、 GB/T 7755- 1987 《硫化橡胶透气性测试》 测试结果如下-
Figure imgf000025_0001
由此可见, 功能性复合材料 4在丁苯橡胶中能显著提高橡胶的力学性能, 同时起到对气体的一定阻隔作用, 透气率比纯丁苯橡胶降低了 48%。 实施例 19 : 多功能复合材料 8在陶瓷釉面中的应用
以卫生陶瓷为例, 在陶泥坯表面进行二次施釉
底釉配方: 底釉采用锆乳浊釉 组分 含量 (重量%)
锆粉 12
白云石 5
方解石 12
钾长石 26
氧化锌 5
功能性复合材料 8 4
石英 31
碳酸锶 2
透明熔块 2 面釉配方:
Figure imgf000026_0001
制备工艺: 在陶瓷泥表面喷淋两次釉后, 将陶瓷放在炉内进行烧结, 烧结 过程中要求要求 1个半小时内均匀加温至 300Ό , 保温 1小时半, 继续在一个半 小时内匀速加温至 600 °C , 保温 1小时半, 再匀速加温至 900°C, 保温 1小时半 后, 继续在两小时内匀速加温至 1 200°C, 保温两小时, 关掉热源, 使其自然冷 却, 得到抗菌卫生陶瓷。 对比例 10
不加功能性复合材料 8, 用白色苏土 (苏州产高岭土) 完全替代功能性复 合材料, 制备工艺与实施例 19完全相同。 将实施例 19和对比例 1 0所得的卫生陶瓷产品, 按标准 JC/T897- 2002 《抗菌 陶瓷制品抗菌性能》 进行相关的抗菌检测, 结果如下: 测试项目 实施例 19 抗菌率 对比例 10抗菌率 金黄色葡萄球菌 96. 3% 42%
大肠杆菌 97. 8% 34%
白色念珠菌 92. 2% 24% 由此可见, 在陶瓷中添加功能性复合材料, 可以制备具有抗菌功效的功能 性卫生陶瓷制品。 在本发明提及的所有文献都在本申请中引用作为参考, 就如同每一篇文献 被单独引用作为参考那样。此外应理解,在阅读了本发明的上述讲授内容之后, 本领域技术人员可以对本发明作各种改动或修改, 这些等价形式同样落于本申 请所附权利要求书所限定的范围。

Claims

权 利 要 求 书
1 . 一种复合材料, 它包括作为载体的无机非金属矿物和担载在该载体上 的纳米二氧化钛层, 该层由多个二氧化钛纳米球组成, 所述二氧化钛纳米球由 多个二氧化钛纳米单颗粒组成。
2. 一种复合材料, 它包括作为载体的无机非金属矿物、 担载在该载体上 的纳米二氧化钛层、 以及担载在所述纳米二氧化钛层上的一层或多层功能层, 所述纳米二氧化钛层由多个二氧化钛纳米球组成, 所述二氧化钛纳米球由多个 二氧化钛纳米单颗粒组成。
3. 如权利要求 1或 2所述的复合材料, 其特征在于, 所述作为载体的无机 非金属矿物是耐酸性的, 优选是选自高岭土、 云母、 滑石粉、 硫酸钡、 硅藻土、 膨润土、 蒙脱土、 白炭黑、 硅灰石、 沸石、 海泡石、 凹凸棒、 磁石中的一种或 多种物质。
4. 如权利要求 1或 2所述的复合材料, 其特征在于, 所述作为载体的无机 非金属矿物的粒径在 0. 2- 100 μ m的范围内。
5. 如权利要求 1或 2所述的复合材料, 其特征在于, 所述二氧化钛纳米单 颗粒的直径尺寸在 1 -20纳米的范围内, 所述二氧化钛纳米球的直径尺寸为所述 二氧化钛纳米单颗粒直径尺寸的 2-100倍; 优选是所述二氧化钛纳米单颗粒的 直径尺寸在 2- 10纳米的范围内, 所述二氧化钛纳米球的直径尺寸为所述二氧化 钛纳米单颗粒直径尺寸的 5- 50倍。
6. 如权利要求 1或 2所述的复合材料, 其特征在于, 所述纳米二氧化钛层 的担载量为所述无机非金属矿物载体层重量的 1 -50%, 优选是所述纳米二氧化 钛层的担载量为所述无机非金属矿物载体层重量的 5-30%, 更优选是所述纳米 二氧化钛层的担载量为所述无机非金属矿物载体层重量的 5-20%。
7. 如权利要求 2所述的复合材料, 其特征在于, 所述功能层的担载量为所 述无机非金属矿物载体层重量的 0. 1 -20%。
8. 如权利要求 1 -7中任一项所述的复合材料, 其特征在于, 所述纳米二氧 化钛层牢固地担载于所述无机非金属矿物载体层之上。
9.如权利要求 8所述的复合材料, 其特征在于, 所述纳米二氧化钛层的牢 固担载可用以下方法证实: 将 1克复合材料用 20克乙醇配制成 5%的混悬液, 用 转速为 10000转 /分的高速分散均质机分散 4小时, 再用乙醇将混悬液的浓度稀 释为 0. 05%, 取 0. 02ml稀释液作为样本, 用透射电子显微镜检测, 选择颗粒明 显、 均匀且集中的区域, 分别以 5 , 000倍和 20, 000倍的放大倍率拍摄电镜照片, 从所得的各张电镜照片可见, 所述复合材料经高速分散均质机分散后, 均未出 现游离的二氧化钛纳米球。
10. 如权利要求 2所述的复合材料, 其特征在于, 所述功能层选自紫外线 屏蔽防护层、 阻燃层、 光催化增强层、 抗菌层或光催化抗菌增强层。
1 1. 如权利要求 10所述的复合材料, 其特征在于, 所述紫外线屏蔽防护层 包含选自氧化硅、 水合氧化硅、 氧化铝、 水合氧化铝、 氧化锆的一种或多种氧 化物; 所述阻燃层包含氢氧化镁; 所述光催化增强层包含氧化锌; 所述抗菌层 包含银盐; 所述光催化抗菌增强层包含氧化锌和银盐。
1 2. 一种权利要求 1所述复合材料的制备方法, 该方法包括以下步骤: 在水、 无机酸和第一分散剂的存在下制备用作载体材料的无机非金属矿物 的分散悬浮液, 在水和第二分散剂的存在下制备四氯化钛水解液,
混合所述耐酸性非金属矿物的分散悬浮液和所述四氯化钛水解液, 使其反 应完全, 即得到权利要求 1所述的复合材料。
1 3. 一种权利要求 2所述复合材料的制备方法, 该方法包括以下步骤:
( 1 )在水、 无机酸和第一分散剂的存在下制备用作载体材料的无机非金属 矿物的分散悬浮液, 在水和第二分散剂的存在下制备四氯化钛水解液, 混合所 述耐酸性非金属矿物的分散悬浮液和所述四氯化钛水解液, 使其反应完全, 制 得担载有二氧化钛层的无机非金属矿物复合材料,
(2)将制得的复合材料在水和第一分散剂的存在下分散制得混悬液, 将用 于制备功能层的原料加入到所述复合材料混悬液中, 使其反应完全, 以在复合 材料上担载一层新的功能层。
14. 如权利要求 1 3所述的方法, 其特征在于重复所述步骤(2)以制得具有 多层功能层复合材料。
15. 如权利要求 1 2- 14中任一项所述的方法, 其特征在于:
所述第一分散剂是选自聚丙烯酸钠、 聚丙烯酸铵、 聚丙烯酰胺、 碱金属聚 磷酸盐、 聚羧酸、 聚羧酸钠、 十二垸基硫酸钠、 十二垸基磺酸钠、 木质素磺酸 钠、 铵盐分散剂、 聚酯分散剂、 聚醚分散剂中的一种或多种;
所述第二分散剂是选自聚丙烯酰胺、聚乙烯醇、聚丙烯酸钠、聚丙烯酸铵、 聚羧酸、 聚羧酸钠、 铵盐分散剂、 聚酯分散剂、 聚醚分散剂、 聚乙二醇类分散 剂、 聚烯基醇分散剂、 聚酰亚胺类分散剂或聚氨酯类分散剂中的一种或多种; 所述第一分散剂和所述第二分散剂可以相同或不同。
16. 如权利要求 12-14中任一项所述的方法, 其特征在于:
在水、 无机酸和第一分散剂的存在下制得的无机非金属矿物悬浮液是分散 均匀的, 其固含量为 4-50重量%; 无机酸占悬浮液的 2. 5- 35重量%; 第一分散剂 占悬浮液的 0. 01 -10重量%; 在水和第二分散剂的存在下制得的四氯化钛水解液, 水与四氯化钛的重量 比是 (1-10) :1; 第二分散剂占四氯化钛的 0.5- 20重量%;
无机非金属矿物悬浮液和四氯化钛水解液的混合比例是使得四氯化钛占 无机非金属矿物的 2-60重量%。
17. 如权利要求 12-14中任一项所述的方法, 其特征在于,所述无机酸是无 机强酸, 优选是选自硫酸、 盐酸、 硝酸中的一种, 或者是其中几种的混合酸。
18. —种组合物, 该组合物包含权利要求 1-11中任一项所述的复合材料。
19. 如权利要求 18所述的组合物, 其特征在于该组合物是涂料用组合物、 化妆品用组合物、 造纸用组合物、 粘合剂组合物、 水处理用组合物、 塑料、 橡 胶、 纤维、 陶瓷、 胶黏剂或水泥用组合物。
20. 权利要求 1-11中任一项所述的复合材料作为添加剂在工业上的应用。
21. 如权利要求 20所述的应用, 所述应用是在造纸、 塑料、 涂料、 纤维、 化妆品、 橡胶、 陶瓷、 胶黏剂、 水泥或水处理的领域的应用。
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