Ceramic powder capable of promoting blood circulation, sterilizing and releasing far infrared rays and application of ceramic powder in diatom ooze water-based paint
The invention relates to a divisional application of a Chinese patent 'a bicomponent diatom ooze water-based paint with zero VOC emission', wherein the application date is 11 months and 10 days in 2018, and the application number is 201811335452. X.
Technical Field
The invention belongs to the technical field of building coatings, and relates to ceramic powder for promoting blood circulation, sterilizing and releasing far infrared rays and application thereof in diatom ooze water-based coatings.
Background
With the rapid development of national economy and the gradual improvement of the living standard of people's materials, indoor decoration is increasingly popularized. Two thirds of the life of a person spends indoors, and the life and working time of modern people in indoor environment reaches 80% -90% of the whole day, so the quality of the indoor environment directly influences the health of the people.
The diatom ooze is a dry powder-shaped interior wall decoration coating material prepared by taking an inorganic gelled substance as a main binding material and a diatom material as a main functional filler. Has the functions of eliminating formaldehyde, purifying air, regulating humidity, releasing negative oxygen ions, preventing fire, retarding fire, self-cleaning wall surface, sterilizing, deodorizing, etc. The diatom ooze paint is used for replacing wallpaper and latex paint and is suitable for decorating inner walls of villas, apartments, hotels, homes, hospitals and the like, but the diatom ooze produced by a plurality of manufacturers is unreasonably matched in materials, the surface area of the diatom ooze is sealed, the performance of the diatom ooze is greatly reduced, a more reasonable formula system is needed for developing the diatom ooze paint, and therefore a better decorating material is provided for people.
CN201710130255.3 discloses a diatom ooze biotechnological water-based paint and a preparation method and application thereof, wherein the diatom ooze biotechnological water-based paint is prepared from the following components in parts by weight: 10-30 parts of deionized water, 10-25 parts of heavy calcium carbonate, 10-25 parts of titanium dioxide, 5-20 parts of talcum powder, 10-25 parts of acrylic emulsion or silicone-acrylic emulsion or polyurethane emulsion, 1-25 parts of kaolin, 10-30 parts of diatom ooze, 1-10 parts of natural camphorwood essential oil, 1-10 parts of biotech coconut essential oil and 5-25 parts of auxiliary agent. The product of the invention has simple production process, generates negative ions through photocatalysis, and improves the comprehensive effect of the water-based paint. However, the invention will be used with acrylic or silicone-acrylic or polyurethane emulsions that generate VOC emissions.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention aims to provide a two-component diatom ooze water-based paint with zero VOC emission.
The invention adopts the following technical scheme that the two-component diatom ooze water-based paint with zero VOC (volatile organic compounds) emission consists of A, B components in parts by weight: the component A comprises 0.5-1 part of potassium persulfate, 30-40 parts of diatom ooze powder, 10-15 parts of rutile titanium dioxide, 6-12 parts of far infrared ceramic powder, 45-75 parts of water, 1-2 parts of flatting agent and 0.3-0.6 part of defoaming agent; the component B comprises 6-12 parts of crosslinkable monomer, 2-4 parts of antibacterial monomer, 0.1-0.3 part of catalyst, 3-5 parts of water-based stearate and 15-25 parts of water.
The leveling agent is polyether modified organic silicon leveling agent, and the defoaming agent is organic silicon defoaming agent.
The crosslinking monomer is at least one of N-hydroxyethyl acrylamide, N-hydroxypropyl acrylamide, N- (2-hydroxypropyl) methacrylamide and N- (1, 1-dimethyl-3-oxobutyl) acrylamide.
The antibacterial monomer is at least one of dimethyl diallyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride, diethyl diallyl ammonium chloride, acryloyloxyethyl triethyl ammonium chloride and N-vinyl isothiazole-3-ketone.
The catalyst is at least one of silver nitrate, ferrous pyrophosphate, sucrose, sodium metabisulfite and sodium hydroxymethanesulfinate hydrate.
The water-based stearate is a stearate dispersion liquid with the mass fraction of 40-50%, and the stearate is at least one of magnesium stearate, zinc stearate and calcium stearate.
The particle sizes of the diatom ooze powder, the rutile type titanium dioxide and the far infrared ceramic powder are all 1200 meshes.
The far infrared ceramic powder is prepared by the following method:
(1) preparing mixed material particles: adding 5-10 parts of transition metal oxide, 5-10 parts of silicon dioxide, 5-10 parts of alumina, 10-15 parts of cerium dioxide and 50-80 parts of water into ball milling equipment for ball milling for 4-6h, then adding a discharged material, and carrying out spray granulation to obtain material particles with the particle size of 20 meshes and the water content of 10% +/-2%;
(2) and (3) sintering: pressing the material particles in the step (1) into a plate by dry pressing under the pressure of 30MPa, then calcining for 5-8h in a tubular kiln at the temperature of 1400 ℃ and 1500 ℃ in a weak reducing atmosphere, and then cooling to room temperature to obtain a compact plate;
(3) crushing: and crushing the compact plate, ball-milling the compact plate for 48 hours by using zirconium beads, and sieving the compact plate by using a 1200-mesh sieve to obtain the far infrared ceramic powder.
The transition metal oxide, the silicon dioxide, the alumina, the cerium dioxide and the water in the step (1) have the weight part ratio of (5-10): (5-10): (5-10): (10-15): (50-80); the particle size of the transition metal oxide, the silicon dioxide, the aluminum oxide and the cerium dioxide is 800 meshes.
The transition metal oxide is at least one of scandium oxide, neodymium oxide, erbium oxide and ytterbium oxide; the weak reducing atmosphere is N with the volume fraction of 90 percent2With 10% by volume of H2The gas mixture is uniformly mixed.
The preparation method comprises the steps of respectively and uniformly dispersing the A, B components by using different dispersing agents, and then respectively packaging the components separately for later use to obtain the component A and the component B; the A, B is mixed and stirred evenly half an hour before use, and then is applied to the inner wall surface by brushing or spraying.
Compared with the prior art, the invention has the following advantages or beneficial results:
(1) the ceramic powder which has health care function, blood circulation promoting and sterilization functions and can release far infrared rays is self-prepared and used for the double-component diatom ooze water-based paint; the mechanism of releasing far infrared rays is as follows: conversion of ceria to Ce during sintering in a weakly reducing atmosphere2O3The crystal phases of different powders are mutually interpenetrated to form the far infrared ceramic powder, wherein Ce3+After the excitation light is efficiently absorbed by using the allowed broadband d-f transition, the energy is transferred to the co-doped Sc3+/Nd3+/Er3+/Yb3+Ions to thereby Sc3+/Nd3+/Er3+/Yb3+The ions generate strong far infrared ray emission;
(2) according to the invention, after the A, B bi-components are mixed, the potassium persulfate-catalyst system initiates the room-temperature free radical polymerization of the crosslinking monomer and the antibacterial monomer to form the hydrogel with the open pore structure, the hydrogel has the functions of absorbing water and harmful substances and is supplemented with diatom ooze to form the environment-friendly and green water-based paint capable of preserving moisture and absorbing the harmful substances;
(3) the components of the invention are inorganic substances, organic silicon (flatting agent and defoaming agent), solid organic substances (crosslinkable monomer and antibacterial monomer), do not contain emulsion (containing residual micromolecules) and other film forming substances, and have real zero VOC in the formula;
(4) the diatom ooze water-based paint contains antibacterial monomers, and the antibacterial monomers are polymerized into one part of a hydrogel molecular chain after being mixed with A, B double components, namely, a plurality of quaternary ammonium salt ion antibacterial groups are arranged on hydrogel molecules.
Detailed Description
The following examples further describe a two-component diatom ooze water-based paint with zero VOC emission. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.
Example 1
A far infrared ceramic powder X is prepared by the following method:
(1) preparing mixed material particles: adding 9 parts of scandium oxide (800 meshes), 6 parts of silicon dioxide (800 meshes), 9 parts of aluminum oxide (800 meshes), 14 parts of cerium dioxide (800 meshes) and 70 parts of water into ball milling equipment for ball milling for 6 hours according to the parts by weight, then adding a discharging material, and carrying out spray granulation to obtain material particles with the particle size of 20 meshes and the water content of 8%;
(2) and (3) sintering: pressing the material particles in the step (1) into a plate by dry pressing under the pressure of 30MPa, and then in a tubular kiln in a weak reducing atmosphere (N with the volume fraction of 90 percent)2With 10% by volume of H2The uniform mixed gas) at 1500 ℃ for 5 hours, and then cooling to room temperature to obtain a compact plate;
(3) crushing: and crushing the compact plate, ball-milling zirconium beads for 48 hours, and sieving with a 1200-mesh sieve to obtain the far infrared ceramic powder X.
Example 2
A far infrared ceramic powder Y is prepared by the following method:
(1) preparing mixed material particles: adding 6 parts of transition metal oxide, 8 parts of silicon dioxide (800 meshes), 9 parts of aluminum oxide (800 meshes), 11 parts of cerium dioxide (800 meshes) and 60 parts of water into ball milling equipment for ball milling for 5 hours in parts by weight, then adding a discharged material, and carrying out spray granulation to obtain material particles with the particle size of 20 meshes and the water content of 12%;
(2) and (3) sintering: pressing the material particles in the step (1) into a plate by dry pressing under the pressure of 30MPa, and then in a tubular kiln in a weak reducing atmosphere (N with the volume fraction of 90 percent)2With 10% by volume of H2The uniform mixed gas) for 8 hours at 1400 ℃, and then cooling to room temperature to obtain a compact plate;
(3) crushing: and crushing the compact plate, ball-milling the compact plate for 48 hours by using zirconium beads, and sieving the compact plate by using a 1200-mesh sieve to obtain the far infrared ceramic powder Y.
Example 3
A far infrared ceramic powder Z is prepared by the following method:
(1) preparing mixed material particles: adding 5 parts of scandium oxide (800 meshes), 5 parts of silicon dioxide (800 meshes), 5 parts of aluminum oxide (800 meshes), 10 parts of cerium dioxide (800 meshes) and 50 parts of water into ball milling equipment for ball milling for 4 hours according to parts by weight, then adding a discharging material, and carrying out spray granulation to obtain material particles with the particle size of 20 meshes and the water content of 8%;
(2) and (3) sintering: pressing the material particles in the step (1) into a plate by dry pressing under the pressure of 30MPa, and then in a tubular kiln in a weak reducing atmosphere (N with the volume fraction of 90 percent)2With 10% by volume of H2The uniform mixed gas) for 5 hours at 1400 ℃, and then cooling to room temperature to obtain a compact plate;
(3) crushing: and crushing the compact plate, ball-milling the compact plate for 48 hours by using zirconium beads, and sieving the compact plate by using a 1200-mesh sieve to obtain the far infrared ceramic powder Z.
Example 4
A far infrared ceramic powder M is prepared by the following method:
(1) preparing mixed material particles: adding 10 parts by weight of scandium oxide (800 meshes), 10 parts by weight of silicon dioxide (800 meshes), 10 parts by weight of aluminum oxide (800 meshes), 15 parts by weight of cerium dioxide (800 meshes) and 80 parts by weight of water into ball milling equipment, carrying out ball milling for 5 hours, then adding a discharged material, and carrying out spray granulation to obtain material particles with the particle size of 20 meshes and the water content of 12%;
(2) and (3) sintering: pressing the material particles in the step (1) into a plate by dry pressing under the pressure of 30MPa, and then in a tubular kiln in a weak reducing atmosphere (N with the volume fraction of 90 percent)2With 10% by volume of H2The uniform mixed gas) at 1500 ℃ for 5 hours, and then cooling to room temperature to obtain a compact plate;
(3) crushing: and crushing the compact plate, ball-milling zirconium beads for 48 hours, and sieving with a 1200-mesh sieve to obtain the far infrared ceramic powder M.
Example 5
The two-component diatom ooze water-based paint with zero VOC emission is characterized by comprising A, B components in parts by weight: the component A comprises 0.5 part of potassium persulfate, 30 parts of diatom ooze powder (1200 meshes), 10 parts of rutile type titanium dioxide (1200 meshes), 6 parts of far infrared ceramic powder X (1200 meshes), 45 parts of water, 1 part of polyether modified organic silicon leveling agent and 0.3 part of organic silicon defoaming agent; the component B comprises 6 parts of N-hydroxyethyl acrylamide, 2 parts of dimethyl diallyl ammonium chloride, 0.1 part of sodium hydroxymethanesulfinate, 3 parts of a calcium stearate dispersion liquid with the mass fraction of 50% and 15 parts of water.
Example 6
The two-component diatom ooze water-based paint with zero VOC emission is characterized by comprising A, B components in parts by weight: the component A comprises 1 part of potassium persulfate, 40 parts of diatom ooze powder (1200 meshes), 15 parts of rutile type titanium dioxide (1200 meshes), 12 parts of far infrared ceramic powder Y (1200 meshes), 75 parts of water, 2 parts of polyether modified organic silicon leveling agent and 0.6 part of organic silicon defoaming agent, and the component B comprises 12 parts of N- (2-hydroxypropyl) methacrylamide, 4 parts of acryloyloxyethyl triethyl ammonium chloride, 0.3 part of sodium metabisulfite, 5 parts of magnesium stearate dispersion liquid with the mass fraction of 40% and 25 parts of water.
Example 7
The two-component diatom ooze water-based paint with zero VOC emission is characterized by comprising A, B components in parts by weight: the component A comprises 0.8 part of potassium persulfate, 32 parts of diatom ooze powder (1200 meshes), 12 parts of rutile type titanium dioxide (1200 meshes), 11 parts of far infrared ceramic powder Z (1200 meshes), 50 parts of water, 1.2 parts of polyether modified organic silicon leveling agent and 0.5 part of organic silicon defoaming agent, and the component B comprises 10 parts of N- (2-hydroxypropyl) methacrylamide, 3 parts of acryloyloxyethyl triethyl ammonium chloride, 0.15 part of sodium metabisulfite, 4 parts of magnesium stearate dispersion liquid with the mass fraction of 40% and 16 parts of water.
Example 8
The two-component diatom ooze water-based paint with zero VOC emission is characterized by comprising A, B components in parts by weight: the component A comprises 0.6 part of potassium persulfate, 36 parts of diatom ooze powder (1200 meshes), 14 parts of rutile type titanium dioxide (1200 meshes), 7 parts of far infrared ceramic powder M (1200 meshes), 60 parts of water, 1.6 parts of polyether modified organic silicon leveling agent and 0.4 part of organic silicon defoaming agent, and the component B comprises 8 parts of N- (2-hydroxypropyl) methacrylamide, 2.5 parts of acryloyloxyethyl triethyl ammonium chloride, 0.2 part of sodium metabisulfite, 3.5 parts of magnesium stearate dispersion liquid with the mass fraction of 40% and 22 parts of water.
The preparation of examples 5-8 is to disperse the A, B two components uniformly with different dispersants, and then to pack separately the component A and the component B; half an hour before use, A, B is mixed and stirred uniformly and then is applied to the surface of the cement board by brushing or spraying; under the same condition, the commercial diatom ooze coating (comparative example) is brushed on the surface of the cement board with the same material.
The performance tests after drying of examples 5-8 and comparative examples (mainly according to the standard GB/T9756-:
TABLE 1 Performance Table of the latex paints
Table 2: antibacterial property meter (GB/T21866-
As can be seen from table 1, the two-component diatom ooze water-based paint of the examples has higher brushing times and formaldehyde purification efficiency than the commercially available diatom ooze paint; as can be seen from Table 2, the Escherichia coli resistance and Staphylococcus aureus resistance of the examples are more than 99.5%; the embodiment can provide a safer and more environment-friendly environment for life, work and study of people.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes, modifications and variations can be made therein without departing from the spirit and scope of the invention as defined in the following claims.