CN113511832A - Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof - Google Patents
Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof Download PDFInfo
- Publication number
- CN113511832A CN113511832A CN202110616589.8A CN202110616589A CN113511832A CN 113511832 A CN113511832 A CN 113511832A CN 202110616589 A CN202110616589 A CN 202110616589A CN 113511832 A CN113511832 A CN 113511832A
- Authority
- CN
- China
- Prior art keywords
- inorganic particles
- component
- polymer
- stirring
- cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1037—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
- C04B20/008—Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
- C04B2111/2046—Shock-absorbing materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Nanotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a method for preparing polymer-coated inorganic particles by adopting heterogeneous solution. The polymer is obtained by reacting A, B components; the preparation method specifically comprises the following steps: weighing an organic solvent in a reaction device I, adding the component B into the organic solvent, and stirring to uniformly mix the component B and the component B to obtain a homogeneous solution. Continuously stirring and adding inorganic particles into the mixture, and uniformly dispersing to obtain a mixed system of the inorganic particle-B component. And weighing an organic solvent in a reaction device II, adding the component A insoluble in the organic solvent into the reaction device II, and uniformly stirring to obtain a dispersion system. Heating the mixed system of the inorganic particles and the component B to 70-80 ℃, dropwise adding the dispersed system of the component A while stirring, and stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate. The resulting precipitate is isolated as polymer-coated inorganic particles. The method has short operation period, is simple and quick, has high reaction speed, can be used for batch production, and has important industrial application prospect.
Description
Technical Field
The invention belongs to the field of materials, and relates to a preparation method of polymer-coated inorganic particles, in particular to a heterogeneous solution preparation method of polymer-coated inorganic particles and application of the polymer-coated inorganic particles in vibration reduction.
Background
The inorganic nano particles coated by the high molecular polymer have the thermal stability, modulus and mechanical strength of inorganic materials and the easy processability and flexibility of high molecular materials, so that the compatibility of the inorganic nano particles and the polymer is improved, the agglomeration phenomenon of the inorganic nano particles is prevented, and the cohesiveness, glossiness and mechanical property of the latex film can be improved. Therefore, the inorganic nanoparticles coated with the high molecular polymer have played an increasingly important role in the fields of cosmetics, inks, coatings, textiles, and the like. However, since the affinity between a high molecular polymer, which is an organic substance, and inorganic nanoparticles is relatively poor, it is generally difficult to coat the inorganic nanoparticles with the polymer. The coating methods commonly used at present mainly include emulsion polymerization, dispersion polymerization, soap-free emulsion polymerization, suspension polymerization, miniemulsion polymerization, heterogeneous coagulation, layer-by-layer assembly, and the like. Wherein, the nucleation sites of the emulsion polymerization method, the dispersion polymerization method and the soap-free emulsion polymerization method are not in the liquid drop, and the method is called a non-liquid drop inner nucleation coating method; the nucleation sites of the suspension polymerization method and the miniemulsion polymerization method are in liquid drops, and the method is called an in-liquid-drop nucleation coating method; the heterogeneous agglomeration method and the layer-by-layer assembly method belong to special coating methods. The polymerization mode adopted by the coating method is based on free radical polymerization, the steps are complicated, the reaction time is long, impurities such as a dispersing agent, an initiator and the like are generated, and the treatment is difficult.
The cement-based composite material is a material which is obtained by adding fibers, fillers, polymers and the like into a cement-based material so as to improve various performances of the cement-based material. Compared with the common cement-based material, the cement-based damping composite material has higher shock resistance and vibration resistance, fundamentally overcomes the defects of high noise and high vibration of the concrete pavement, increases the pavement flexibility and brings new vitality to the concrete pavement. Currently, with respect to damping concrete structures, it is common to reduce structural vibrations by installing additional equipment in the concrete structure. But the damping performance of the material is explored from the cement-based material, and a universally applicable cement-based damping material is not researched yet.
Disclosure of Invention
Aiming at the problems in the preparation of polymer-coated inorganic particles in the prior art, the invention provides a method for preparing the polymer-coated inorganic particles by adopting heterogeneous solution. The method adopts A, B two components to synthesize the polymer with the vibration reduction function to form a shell, takes inorganic particles as a core, and obtains the inorganic particles coated by the polymer according to a step-by-step polymerization mechanism. The method has the advantages of short experimental period, simple steps, easy operation, high yield and great reduction of the content of impurities in the product.
The technical scheme of the invention is as follows: a method for preparing polymer-coated inorganic particles from a heterogeneous solution, the polymer being obtained by reacting A, B components in a molar ratio of (1-1.1): 1.
Wherein the component A is 4,4 '-diphenylmethane diisocyanate or a semi-prepolymer synthesized by 35-60 parts by weight of 4, 4' -diphenylmethane diisocyanate and 50-70 parts by weight of polyether polyol. When the component A is 4, 4' -diphenylmethane diisocyanate, the component B consists of 80-100 parts by weight of polyethylene glycol and 0-20 parts by weight of 1, 4-butanediol; when the component A is the semi-prepolymer, the component B consists of 10-75 parts by weight of polyether polyol and 20-80 parts by weight of chain extender. The preparation method specifically comprises the following steps:
(1) weighing an organic solvent S in a reaction device I, adding the component B into the organic solvent S at normal temperature, and stirring to uniformly mix the component B and the component B to obtain a homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. Wherein, when the component A is 4, 4' -diphenylmethane diisocyanate, the organic solvent S is acetone; when the component A is a semi-prepolymer, the organic solvent S is cyclohexane. The inorganic particles are metal silicon powder, quartz sand or silica fume.
(2) And weighing the organic solvent S in a reaction device II, adding the component A insoluble in the organic solvent S into the reaction device II, and uniformly stirring to obtain a dispersion system.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 70-80 ℃, and slowly dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure.
Wherein the polyether polyol is polytetrahydrofuran polyol or poly epsilon-caprolactone polyol; the chain extender is one or more of 3, 5-diethyl-2, 4-toluenediamine, N '-diisobutylmethyldicyclohexylamine, N' -diisobutylphenyldiamine and the like. The polymer-coated inorganic particles prepared by the invention take the polymer synthesized by A, B components as a shell, the polymer can convert the mechanical energy of vibration noise into energy consumption, has excellent adhesiveness, flexibility and impact resistance, and is a damping material widely applied. Meanwhile, the coating structure formed by the inorganic particles and the polymer combines the excellent vibration damping performance of the polymer material and the rigidity of the inorganic particles to form a micro-damping structure unit, thereby further improving the vibration damping performance of the polymer material.
Preferably, the inorganic particles described in step (1) are surface-modified inorganic particles, and are obtained by the following method: and (3) activating the surfaces of the inorganic particles by adopting plasma, and then performing silanization reaction on a proper amount of the inorganic particles with activated surfaces to obtain the inorganic particles with modified surfaces.
The specific steps of surface activation of the inorganic particles are as follows: placing the inorganic particles in a culture dish, and preferably just paving the bottom of the surface dish; controlling the vacuum degree to be 10Pa, introducing a cleaning gas for plasma with the pressure of 100Pa, applying high-frequency voltage to enable the inorganic particles to be completely covered by the plasma, and treating for a certain time to obtain the inorganic particles with activated surfaces. The particle size of the inorganic particles is 200-800 meshes, and the cleaning gas is oxygen, hydrogen, argon or nitrogen; the time for activating the surface is 30s-5 min.
Wherein, the silanization reaction comprises the following specific steps: weighing a proper amount of inorganic particles with activated surfaces, slowly adding the inorganic particles into a silane coupling agent methanol solution under the condition of stirring, stirring at room temperature to perform a silanization reaction, filtering, washing and drying in vacuum to obtain the surface-modified silicon powder. The silane coupling agent is a silane coupling agent with amino and hydroxyl functional groups on the surface; the concentration of the silane coupling agent methanol solution is 0.5-5%; the silanization reaction time is 2-8 hours. The silane coupling agent is KH-540, KH-550, KH-551, KH-620, KH-791, KH-792, KH-901 or KH-902.
Use of polymer-coated inorganic particles for the preparation of a cement-based composite material having a polymer-coated inorganic particle content of from 2 to 8% by weight of cement powder. The preparation method of the cement-based composite material comprises the following steps: adding inorganic particles coated by a polymer into cement powder, and uniformly stirring; and adding water according to the weight ratio of the water to the cement (0.4-0.5) to 1, fully stirring, pouring into a mould, demoulding and maintaining to obtain the cement-based composite material with the damping function. According to the polymer-coated inorganic particles prepared by the heterogeneous solution method, the viscoelastic material coated on the surfaces of the inorganic particles can dissipate part of energy under the vibration condition; in addition, the inorganic particles can rub with the viscoelastic material, so that the mechanical energy of the motion of the object is converted into heat energy to be consumed; meanwhile, the inorganic particles can also play a role of mass blocks and can also play a role of energy consumption through self vibration, namely, the energy of vibration is converted into the kinetic energy of the inorganic particles. In conclusion, the polymer-coated inorganic particles are used as a novel filler to be added into other coatings such as cement, so that the damping performance of the material can be greatly improved, and the polymer-coated inorganic particles have important application value.
The invention has the beneficial effects that:
(1) the invention provides a novel method for preparing polymer-coated inorganic particles, which has the advantages of short operation period, simplicity, rapidness, high reaction speed, capability of batch production, capability of overcoming the problems of complex steps and more product impurities in the prior art, and important industrial application prospect.
(2) The polymer-coated inorganic particles prepared by the invention have excellent damping performance, and the loss factor is greatly improved by adding the polymer-coated inorganic particles as a filler into a cement-based material; therefore, the method has wide application prospect in the aspect of engineering vibration reduction and noise reduction.
(3) In the polymer-coated inorganic particles prepared by the invention, the types of the inorganic particles and the polymer can be selected to prepare functional core-shell particles from inorganic particles and polymers with different functions according to different requirements, so that the requirements of different fields can be met, and the application field is wide.
(4) The inorganic particles coated by the polymer prepared by the invention are micron-sized inorganic particles, and the blank in the prior art is filled.
Drawings
FIG. 1 is SEM photographs of fused silica sand (FIG. 1a) and polymer-coated fused silica sand (FIG. 1b) in example 1; wherein fig. 1c is an enlarged view of a portion of fig. 1 b.
FIG. 2 is SEM photographs of silicon metal powder (FIG. 2a) and polymer-coated silicon metal powder (FIG. 2b) in example 2; wherein fig. 2c is a partial enlarged view of fig. 2 b.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1:
1. activation and silanization of the surface of the inorganic particles:
adopting plasma to activate the surface of inorganic particles, and specifically operating as follows: a certain amount of inorganic particles is placed in the culture dish, preferably just to cover the bottom of the surface dish. Exhausting to make vacuum degree reach 10Pa, introducing cleaning gas for plasma to make cleaning gas pressure be 100Pa, applying high-frequency voltage to make gas be broken down, and utilizing glow discharge to make ionization and produce plasma. The inorganic particles were completely covered with the plasma and treated for 40 seconds to obtain surface-activated inorganic particles. The cleaning gas is nitrogen, and the particle size of the inorganic particles is 200 meshes.
Weighing a proper amount of inorganic particles with activated surfaces, and slowly adding the inorganic particles into a certain amount of silane coupling agent methanol solution under the condition of stirring. Stirring and reacting for 2-8 hours at room temperature to complete the silanization reaction on the surface of the inorganic particles. Filtering, washing and vacuum drying to obtain the surface modified inorganic particles. The silane coupling agent is KH-550. The concentration of the silane coupling agent methanol solution is 2.5%.
2. Preparation of polymer-coated inorganic particles using heterogeneous solutions
The polymer is formed from A, B two components, A, B two components in a 1:1, carrying out the reaction. The component A is 4, 4' -diphenylmethane diisocyanate, and the component B is polyethylene glycol 400.
(1) Weighing a proper amount of acetone into a reaction device I, and adding a component B into the reaction device I at normal temperature, wherein the weight ratio of the component B to the acetone is 1: 15. Stirring to mix them uniformly to obtain homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. The inorganic particles are quartz sand.
(2) And weighing a proper amount of acetone into a reaction device II, adding the component A into the reaction device II, and uniformly stirring to obtain a dispersion system. The weight ratio of the component A to the acetone is 1: 30.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 75 ℃, and slowly and dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure. The polymer-coated inorganic particles were characterized by SEM (fig. 1b), which is significantly different from fused silica yarn (fig. 1 a). As can be seen from FIG. 1b, after the fused silica sand is coated by the polymer, the dispersion effect of the silica sand is good, no obvious adhesion occurs between products, and the dispersion is good. Fig. 1c is a partial enlarged view of fig. 1b, and it can be seen from fig. 1c that a coating layer is formed on the surface of the fused silica sand, and the coating effect is good, so that the core-shell structure particle preparation is realized.
3. Preparation of cement-based composite materials
Adding the inorganic particles coated by the polymer into the cement powder according to the proportion of 4 wt% of the cement powder, and uniformly stirring. Then water is added according to the weight ratio of 0.4: 1. Slowly stirring for two minutes to form a slurry state in order to reduce the generation of air holes as much as possible; and pouring the mixture into a mould after fully stirring, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Example 2: in contrast to the embodiment 1, the process of the invention,
1. activation and silanization of the surface of the inorganic particles:
the cleaning gas adopted for activating the surfaces of the inorganic particles by adopting the plasma is nitrogen, the activation time is 30s, and the particle size of the inorganic particles is 300 meshes.
The silane coupling agent adopted in the silanization reaction is KH-620, and the concentration of the silane coupling agent-methanol solution is 0.5%.
2. Preparation of polymer-coated inorganic particles using heterogeneous solutions
The polymer is formed from A, B two components, A, B two components in a 1.1 molar ratio: 1, carrying out the reaction. The component A is a semi-prepolymer synthesized by 35 parts by weight of 4, 4' -diphenylmethane diisocyanate and 50 parts by weight of polyether polyol. The component B consists of 50 parts by weight of polytetrahydrofuran polyalcohol, 40 parts by weight of N, N '-diisobutylmethyldicyclohexylamine and 20 parts by weight of N, N' -diisobutylphenyldiamine.
(1) Weighing a proper amount of cyclohexane into a reaction device I, and adding a component B into the reaction device I at normal temperature, wherein the weight ratio of the component B to acetone is 1: 40. Stirring to mix them uniformly to obtain homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. The inorganic particles are metal silicon powder.
(2) And weighing the appropriate amount of cyclohexane into a reaction device II, adding the component A into the reaction device II, and uniformly stirring to obtain a dispersion system. The weight ratio of the component A to the acetone is 1: 40.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 70 ℃, and slowly and dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure. The polymer-coated inorganic particles were characterized by SEM (fig. 2 b). Fig. 2a is an SEM photograph of the metal silicon powder, and fig. 2c is a partially enlarged view of fig. 2 b. As can be seen from fig. 2a, the particle sizes of the metal silicon powders are greatly different; and fig. 2b shows that after coating, a single particle coated or a composite particle coated by a plurality of particles is formed, and the formed particles are not obviously adhered to each other and have better dispersibility. Fig. 2c further shows that a coating layer is formed on the surface of the metal particles, and the coating effect is good, thereby realizing the preparation of the core-shell structure.
3. Preparation of cement-based composite materials
Adding the inorganic particles coated by the polymer into the cement powder according to the proportion of 4 wt% of the cement powder, and uniformly stirring. Then water is added according to the weight ratio of 0.45: 1. Slowly stirring for two minutes to form a slurry state in order to reduce the generation of air holes as much as possible; and pouring the mixture into a mould after fully stirring, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Example 3: in contrast to the embodiment 1, the process of the invention,
1. activation and silanization of the surface of the inorganic particles:
the cleaning gas used for activating the surfaces of the inorganic particles by using the plasma is argon, the activation time is 40 seconds, and the particle size of the inorganic particles is 200 meshes.
The silane coupling agent adopted in the silanization reaction is KH-540. The concentration of the silane coupling agent-methanol solution was 1.5%.
2. Preparation of polymer-coated inorganic particles using heterogeneous solutions
The polymer is formed from A, B two components, A, B two components in a 1.1 molar ratio: 1, carrying out the reaction. The component A is a semi-prepolymer synthesized by 50 parts by weight of 4, 4' -diphenylmethane diisocyanate and 65 parts by weight of polyether polyol. The component B consists of 10 parts by weight of poly epsilon-caprolactone polyol and 20 parts by weight of 3, 5-diethyl-2, 4-toluenediamine, 30 parts by weight of N, N '-diisobutylmethyldicyclohexylamine and 30 parts by weight of N, N' -diisobutylphenyldiamine.
(1) Weighing a proper amount of cyclohexane into a reaction device I, wherein the weight ratio of the cyclohexane to a solvent is 1: 80, and stirring to uniformly mix the two to obtain a homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. The inorganic particles are silica fume.
(2) Weighing the appropriate amount of cyclohexane into a reaction device II, wherein the mass ratio of the cyclohexane to the solvent is 1: 80, and uniformly stirring to obtain a dispersion system.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 75 ℃, and slowly and dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure.
3. Preparation of cement-based composite materials
Adding the polymer-coated inorganic particles into the cement powder according to the proportion of 6 wt% of the cement powder, and uniformly stirring. Then water is added according to the weight ratio of 0.5: 1. Slowly stirring for two minutes to form a slurry state in order to reduce the generation of air holes as much as possible; and pouring the mixture into a mould after fully stirring, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Example 4: in contrast to the embodiment 1, the process of the invention,
1. activation and silanization of the surface of the inorganic particles:
the cleaning gas adopted for activating the surfaces of the inorganic particles by adopting the plasma is hydrogen, the activation time is 30 seconds, and the particle size of the inorganic particles is 800 meshes.
The silane coupling agent adopted in the silanization reaction is KH-901. The concentration of the silane coupling agent-methanol solution was 0.75%.
2. Preparation of polymer-coated inorganic particles using heterogeneous solutions
The polymer is formed from A, B two components, A, B two components in a 1:1, carrying out the reaction. The component A is 4, 4' -diphenylmethane diisocyanate. The component B consists of 95 parts by weight of polyethylene glycol 800 and 10 parts by weight of 1, 4-butanediol.
(1) Weighing a proper amount of acetone in a reaction device I, wherein the mass ratio of the acetone to the solvent is 1:15 and stirring to mix them uniformly to obtain homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. The inorganic particles are quartz sand.
(2) Weighing a proper amount of acetone in a reaction device II, wherein the mass ratio of the acetone to the solvent is 1:30, and stirring uniformly to obtain a dispersion system.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 80 ℃, and slowly and dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure. The polymer-coated inorganic particles were characterized by SEM, and the results were similar to example 1.
3. Preparation of cement-based composite materials
Adding the inorganic particles coated by the polymer into the cement powder according to the proportion of 8wt% of the cement powder, and uniformly stirring. Then water is added according to the weight ratio of 0.45: 1. Slowly stirring for two minutes to form a slurry state in order to reduce the generation of air holes as much as possible; and pouring the mixture into a mould after fully stirring, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Example 5: in contrast to the embodiment 1, the process of the invention,
1. activation and silanization of the surface of the inorganic particles:
the cleaning gas adopted for activating the surfaces of the inorganic particles by adopting the plasma is oxygen, the activation time is 40 seconds, and the particle size of the inorganic particles is 500 meshes.
The silane coupling agent adopted in the silanization reaction is KH-791. The concentration of the silane coupling agent-methanol solution was 0.5%.
2. Preparation of polymer-coated inorganic particles using heterogeneous solutions
The polymer is formed from A, B two components, A, B two components in a 1:1, carrying out the reaction. The component A is 4, 4' -diphenylmethane diisocyanate. The component B consists of 80 parts by weight of polyethylene glycol 800 and 20 parts by weight of 1, 4-butanediol.
(1) Weighing a proper amount of acetone in a reaction device I, wherein the mass ratio of the acetone to the solvent is 1:15 and stirring to mix them uniformly to obtain homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. The inorganic particles are metal silicon powder.
(2) Weighing a proper amount of acetone in a reaction device II, wherein the mass ratio of the acetone to the solvent is 1:30, and stirring uniformly to obtain a dispersion system.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 75 ℃, and slowly and dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure. The polymer-coated inorganic particles were characterized by SEM, and the results were similar to example 2.
3. Preparation of cement-based composite materials
Adding the inorganic particles coated by the polymer into the cement powder according to the proportion of 2 wt% of the cement powder, and uniformly stirring. Then water is added according to the weight ratio of 0.4: 1. Slowly stirring for two minutes to form a slurry state in order to reduce the generation of air holes as much as possible; and pouring the mixture into a mould after fully stirring, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Example 6: in contrast to the embodiment 1, the process of the invention,
1. activation and silanization of the surface of the inorganic particles:
the cleaning gas adopted for activating the surfaces of the inorganic particles by adopting the plasma is argon, the activation time is 30 seconds, and the particle size of the inorganic particles is 500 meshes.
The silane coupling agent adopted in the silanization reaction is KH-550. The concentration of the silane coupling agent-methanol solution was 0.75%.
2. Preparation of polymer-coated inorganic particles using heterogeneous solutions
The polymer is formed from A, B two components, A, B two components in a molar ratio of 1.05: 1, carrying out the reaction. The component A is a semi-prepolymer synthesized by 60 parts by weight of 4, 4' -diphenylmethane diisocyanate and 70 parts by weight of polyether polyol. The component B consists of 75 parts by weight of poly epsilon-caprolactone polyol and 20 parts by weight of 3, 5-diethyl-2, 4-toluenediamine. (1) Weighing a proper amount of cyclohexane into a reaction device I, wherein the weight ratio of the cyclohexane to a solvent is 1:40, and stirring to uniformly mix the two components to obtain a homogeneous solution. Continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system. The inorganic particles are quartz sand.
(2) Weighing the appropriate amount of cyclohexane into a reaction device II, wherein the mass ratio of the cyclohexane to the solvent is 1:40, and uniformly stirring to obtain a dispersion system.
(3) Heating the mixed system of the inorganic particle-B component obtained in the step (1) to 75 ℃, and slowly and dropwise adding the dispersed system prepared in the step (2) under the stirring condition. And continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates precipitate, and finishing the reaction.
(4) And (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure. The polymer-coated inorganic particles were characterized by SEM, and the results were similar to example 1.
3. Preparation of cement-based composite materials
Adding the inorganic particles coated by the polymer into the cement powder according to the proportion of 2 wt% of the cement powder, and uniformly stirring. Then water is added according to the weight ratio of 0.4: 1. Slowly stirring for two minutes to form a slurry state in order to reduce the generation of air holes as much as possible; and pouring the mixture into a mould after fully stirring, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Example 7: examination of vibration damping Properties of Cement-based composite materials prepared in examples 1 to 6
The slurry obtained in the preparation of the cement-based composite materials in examples 1 to 6 was poured into a steel mold for testing the damping performance of DMA (dynamic thermo-mechanical analysis), and demolded and cured to obtain a test sample of the cement-based composite material.
The detection method comprises the following steps: the DMA damping performance test of cement mortar was performed by using a Q800 dynamic thermo-mechanical analyzer manufactured by TA of America. Because the rigidity of the cement material is high, the applicant sets the amplitude to be 15 microns in a three-point bending loading mode, and performs frequency scanning on a blank group of cement materials (without adding the polymer coated inorganic particles prepared in examples 1-6) at the temperature of 20 ℃ at the frequency of 1-26Hz to obtain the storage modulus, the loss modulus and the loss factor of a test sample. In addition, the storage modulus, loss modulus and loss factor of the tested sample are obtained by temperature scanning at 10-20 ℃ under 0.1hz and with blank cement materials (without adding the polymer-coated inorganic particles prepared in examples 1-6).
The test results of the cement-based composite materials prepared in examples 1 to 6 were substantially the same, and the test results of the cement-based composite material prepared in example 2 (tables 1 and 2) are described below as an example.
TABLE 1 results of frequency scanning at 20 ℃ of blank cement materials and cement-based composites prepared in example 2
As can be seen from Table 1, the blank cement material with 1-26Hz has a storage modulus of 6873-6935MPa, a loss modulus of 164.5-187MPa and a loss factor of 2.38 × 10 at 20 deg.C-2-2.73×10-2. The cement-based composite material prepared in example 2 has a storage modulus of 6873-6935MPa, a loss modulus of 848.1-1055MPa and a loss factor of 3.67 × 10-2-4.40×10-2. And blankThe loss factor increased by 54-61% compared to the group.
TABLE 1 blank set of Cement materials and Cement-based composites prepared in example 2 temperature Scan results at 0.1hz
As can be seen from Table 2, the storage modulus of the blank cement material at 10-20 ℃ is 22989--2-3.36×10-2. The cement-based composite material prepared in example 2 has a storage modulus of 23704--2-4.50×10-2. The loss factor increased by 34% compared to the blank group.
In conclusion, the loss factor of the cement-based composite materials prepared in the embodiments 1 to 6 of the present application is greatly increased compared with that of blank group cement materials, which indicates that the cement-based composite materials have a wide application prospect in the aspects of engineering vibration reduction and noise reduction. Moreover, the preparation method of the polymer-coated inorganic particles has the advantages of short operation period, simplicity, rapidness, high reaction speed and capability of batch production, and further provides powerful technical support for wide industrial application.
Claims (9)
1. A method for preparing polymer-coated inorganic particles by using heterogeneous solution, which is characterized in that: the polymer is obtained by reacting A, B components according to the molar ratio of (1-1.1) to 1; the component A is 4,4 '-diphenylmethane diisocyanate or a semi-prepolymer synthesized by 35-60 parts by weight of 4, 4' -diphenylmethane diisocyanate and 50-70 parts by weight of polyether polyol; when the component A is 4, 4' -diphenylmethane diisocyanate, the component B consists of 80-100 parts by weight of polyethylene glycol and 0-20 parts by weight of 1, 4-butanediol; when the component A is the semi-prepolymer, the component B consists of 10-75 parts by weight of polyether polyol and 20-80 parts by weight of chain extender; the method specifically comprises the following steps:
(1) weighing an organic solvent S in a reaction device I, adding the component B into the organic solvent S at normal temperature, and stirring to uniformly mix the component B and the component B to obtain a homogeneous solution; continuously stirring and adding inorganic particles into the homogeneous solution until the inorganic particles are uniformly dispersed in the system to obtain an inorganic particle-B component mixed system;
(2) weighing the organic solvent S in a reaction device II, adding the component A insoluble in the organic solvent S into the reaction device II, and uniformly stirring to obtain a dispersion system;
(3) heating the mixed system of the inorganic particle-B component obtained in the step (1) to 70-80 ℃, and slowly dropwise adding the dispersed system prepared in the step (2) under the stirring condition; continuously stirring until the upper layer of the reaction system generates clear liquid and the lower part generates sediment, and finishing the reaction;
(4) and (4) separating, washing, drying and grinding the precipitate obtained in the step (3) to obtain the polymer-coated inorganic particles with the core-shell structure.
2. The method of preparing polymer-coated inorganic particles using heterogeneous solution according to claim 1, wherein: the organic solvent S in the step (1) is cyclohexane or acetone; the inorganic particles are metal silicon powder, quartz sand or silica fume; when the component A is 4, 4' -diphenylmethane diisocyanate, the organic solvent S is acetone; when the component A is a semi-prepolymer, the organic solvent S is cyclohexane.
3. The method of preparing polymer-coated inorganic particles using heterogeneous solution according to claim 2, wherein: the polyether polyol is polytetrahydrofuran polyol or poly epsilon-caprolactone polyol; the chain extender is one or more of 3, 5-diethyl-2, 4-toluenediamine, N '-diisobutylmethyldicyclohexylamine, N' -diisobutylphenyldiamine and the like;
the method of preparing polymer-coated inorganic particles using heterogeneous solution according to claim 3, wherein: the inorganic particles in the step (1) are surface-modified inorganic particles, and are obtained by the following method: and (3) activating the surfaces of the inorganic particles by adopting plasma, and then performing silanization reaction on a proper amount of the inorganic particles with activated surfaces to obtain the inorganic particles with modified surfaces.
4. The method of preparing polymer-coated inorganic particles using heterogeneous solution according to claim 4, wherein: the specific steps of performing surface activation on the inorganic particles in the step (1) are as follows: placing the inorganic particles in a culture dish, and preferably just paving the bottom of the surface dish; controlling the vacuum degree to be 10Pa, introducing a cleaning gas for plasma with the pressure of 100Pa, applying high-frequency voltage to enable the inorganic particles to be completely covered by the plasma, and treating for a certain time to obtain the inorganic particles with activated surfaces.
5. The method of claim 5 for preparing polymer-coated inorganic particles using a heterogeneous solution, wherein: the particle size of the inorganic particles is 200-800 meshes, and the cleaning gas is oxygen, hydrogen, argon or nitrogen; the time for activating the surface is 30s-5 min.
6. The method of preparing polymer-coated inorganic particles using heterogeneous solution according to claim 4, wherein: the silanization reaction of the step (1) comprises the following specific steps: weighing a proper amount of inorganic particles with activated surfaces, slowly adding the inorganic particles into a silane coupling agent methanol solution under the condition of stirring, stirring at room temperature to perform a silanization reaction, filtering, washing and drying in vacuum to obtain the surface-modified silicon powder.
7. The cement-based composite material with damping function as claimed in claim 7, wherein: the silane coupling agent is a silane coupling agent with amino and hydroxyl functional groups on the surface; the concentration of the silane coupling agent methanol solution is 0.5-5%; the silanization reaction time is 2-8 hours.
8. Use of polymer-coated inorganic particles prepared according to any of claims 1 to 8, characterized in that: the polymer-coated inorganic particles are used for preparing cement-based composite materials, and the content of the polymer-coated inorganic particles in the cement-based composite materials is 2-8wt% of cement powder.
9. Use of polymer-coated inorganic particles according to claim 9, characterized in that: the preparation of the cement-based composite material comprises the following steps: adding inorganic particles coated by a polymer into cement powder, and uniformly stirring; and adding water according to the weight ratio of the water to the cement (0.4-0.5) to 1, fully stirring, pouring into a mould, demoulding and maintaining to obtain the cement-based composite material with the damping function.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110616589.8A CN113511832A (en) | 2021-06-03 | 2021-06-03 | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof |
| PCT/CN2022/093446 WO2022252982A1 (en) | 2021-06-03 | 2022-05-18 | Preparation of polymer-coated inorganic particles using heterogeneous solution method, and application of polymer-coated inorganic particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110616589.8A CN113511832A (en) | 2021-06-03 | 2021-06-03 | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113511832A true CN113511832A (en) | 2021-10-19 |
Family
ID=78065456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110616589.8A Pending CN113511832A (en) | 2021-06-03 | 2021-06-03 | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113511832A (en) |
| WO (1) | WO2022252982A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252982A1 (en) * | 2021-06-03 | 2022-12-08 | 青岛理工大学 | Preparation of polymer-coated inorganic particles using heterogeneous solution method, and application of polymer-coated inorganic particles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116177934B (en) * | 2022-12-28 | 2023-11-03 | 佛山市南海科明达混凝土有限公司 | Self-compacting concrete and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516831A (en) * | 2011-11-25 | 2012-06-27 | 中山大学 | Preparation method for organic/inorganic hybridization cladding aluminum composite particle |
| CN104845211A (en) * | 2014-12-17 | 2015-08-19 | 王妮娜 | PTT modified composition with core-shell structure |
| CN104861428A (en) * | 2014-10-08 | 2015-08-26 | 青岛欣展塑胶有限公司 | Composite material for toughening polyesters by covering rigid particles with elastomers |
| CN106566101A (en) * | 2016-06-12 | 2017-04-19 | 吉林建筑大学 | An organic-inorganic composite flame-retardant heat-insulating material and a producing method thereof |
| CN106589302A (en) * | 2016-12-06 | 2017-04-26 | 黑龙江省科学院高技术研究院 | Gradient damping composite material based on mass spring model and preparing method of gradient damping composite material |
| CN109020298A (en) * | 2018-08-09 | 2018-12-18 | 姜香 | A kind of preparation method of concrete accelerator |
| CN111410481A (en) * | 2020-03-31 | 2020-07-14 | 河海大学 | Core-shell nanoparticle modified cement-based protective material and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5473340B2 (en) * | 2009-01-22 | 2014-04-16 | 日揮触媒化成株式会社 | INORGANIC OXIDE PARTICLES WITH POLYMERIZATION INITIAL GROUP, PROCESS FOR PRODUCING THE SAME, POLYMER-MODIFIED INORGANIC OXIDE PARTICLES OBTAINED BY USING THE INORGANIC OXIDE PARTICLE, AND PROCESS FOR PRODUCING THE SAME |
| CN102311621A (en) * | 2011-07-11 | 2012-01-11 | 重庆理工大学 | Method for preparing polylactic acid/inorganic particle composite material in compound force field |
| CN113511832A (en) * | 2021-06-03 | 2021-10-19 | 青岛理工大学 | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof |
-
2021
- 2021-06-03 CN CN202110616589.8A patent/CN113511832A/en active Pending
-
2022
- 2022-05-18 WO PCT/CN2022/093446 patent/WO2022252982A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516831A (en) * | 2011-11-25 | 2012-06-27 | 中山大学 | Preparation method for organic/inorganic hybridization cladding aluminum composite particle |
| CN104861428A (en) * | 2014-10-08 | 2015-08-26 | 青岛欣展塑胶有限公司 | Composite material for toughening polyesters by covering rigid particles with elastomers |
| CN104845211A (en) * | 2014-12-17 | 2015-08-19 | 王妮娜 | PTT modified composition with core-shell structure |
| CN106566101A (en) * | 2016-06-12 | 2017-04-19 | 吉林建筑大学 | An organic-inorganic composite flame-retardant heat-insulating material and a producing method thereof |
| CN106589302A (en) * | 2016-12-06 | 2017-04-26 | 黑龙江省科学院高技术研究院 | Gradient damping composite material based on mass spring model and preparing method of gradient damping composite material |
| CN109020298A (en) * | 2018-08-09 | 2018-12-18 | 姜香 | A kind of preparation method of concrete accelerator |
| CN111410481A (en) * | 2020-03-31 | 2020-07-14 | 河海大学 | Core-shell nanoparticle modified cement-based protective material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| TAHEREH MOHAMMADI HAFSHEJANI ET AL.: ""Effect of polymer-coated silica particles in a Portland cement matrix via in-situ infrared spectroscopy"", 《JOURNAL OF COMPOSITE MATERIALS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252982A1 (en) * | 2021-06-03 | 2022-12-08 | 青岛理工大学 | Preparation of polymer-coated inorganic particles using heterogeneous solution method, and application of polymer-coated inorganic particles |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022252982A1 (en) | 2022-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rong et al. | Surface modification of nanoscale fillers for improving properties of polymer nanocomposites: a review | |
| Gao et al. | Synthesis and characterization of polyurethane/SiO2 nanocomposites | |
| CN113511832A (en) | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof | |
| Liu et al. | Morphology and performance of epoxy nanocomposites modified with organoclay and rubber | |
| Chen et al. | Modification of colloidal silica on the mechanical properties of acrylic based polyurethane/silica composites | |
| CN102504612B (en) | Novel modified nano silicon dioxide and composite coating prepared from same | |
| CN104119704A (en) | Surface modification treatment method of halloysite nanotube | |
| JPS62501338A (en) | metal coated hollow microspheres | |
| Niu et al. | Mechanical and thermal properties of PEEK composites by incorporating inorganic particles modified phosphates | |
| CN109985584B (en) | Preparation method of adjustable and controllable strawberry-shaped silicon dioxide-organic hybrid composite microspheres | |
| Li et al. | Tailored surface chemistry of SiO2 particles with improved rheological, thermal-mechanical and adhesive properties of epoxy based composites for underfill applications | |
| Lu et al. | Surface modification of thermally expandable microspheres for enhanced performance of disbondable adhesive | |
| CN109629326A (en) | A kind of preparation method and application obstructing hydrophobic paper base coating | |
| Wang et al. | Synthesis and characterization of nanosilica/polyacrylate composite latex | |
| CN104629494A (en) | Polycarboxyl silicon dioxide nanoparticles and preparation method thereof | |
| CN108264765B (en) | Preparation method of toughened heat-conducting insulating cyanate resin-based composite material | |
| CN108329686B (en) | Preparation method of high-performance nylon nano composite material | |
| CN105585985A (en) | UV polymerization type body foamed damping material and preparation method thereof | |
| Llorente et al. | The effect of polymer grafting in the dispersibility of alumina/polysulfone nanocomposites | |
| Cheng et al. | Enhancing the mechanical and thermal properties of waterborne polyurethane composites with thermoset epoxy resin microspheres | |
| Sheng et al. | Rheology and dynamic mechanical analysis of bisphenol E cyanate ester/alumina nanocomposites | |
| CN109749131A (en) | Modified halloysite nanotubes and preparation method thereof and epoxy resin nano composites and its application | |
| Nikje et al. | Novel modified nanosilica-based on synthesized dipodal silane and its effects on the physical properties of rigid polyurethane foams | |
| CN115403288B (en) | Concrete anticracking agent and its preparation method and use method | |
| CN111393592A (en) | Nano SiO2Super-hydrophobic material of toughened and modified epoxy resin and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |