CN115594442A - Quartz stone with far infrared antibacterial and odor removal functions and preparation process thereof - Google Patents
Quartz stone with far infrared antibacterial and odor removal functions and preparation process thereof Download PDFInfo
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- CN115594442A CN115594442A CN202211184704.XA CN202211184704A CN115594442A CN 115594442 A CN115594442 A CN 115594442A CN 202211184704 A CN202211184704 A CN 202211184704A CN 115594442 A CN115594442 A CN 115594442A
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- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/18—Polyesters; Polycarbonates
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- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
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Abstract
The invention discloses a quartz stone with far infrared antibacterial and odor removing functions and a preparation process thereof, belonging to the technical field of artificial stones. The quartz stone comprises the following raw materials in parts by weight: 5-15 parts of unsaturated polyester resin, 0.5-2% of curing agent of the unsaturated polyester resin, 40-60 parts of quartz aggregate, 15-30 parts of quartz powder and 5-10 parts of material capable of releasing terahertz electromagnetic waves. The quartz stone with far infrared antibacterial and odor removing functions is not added with the existing antibacterial agents such as metal ions, biological antibacterial agents and the like, only is added with the material capable of releasing terahertz electromagnetic waves, and has the functions of resisting bacteria, removing formaldehyde and the like. The quartz stone with far infrared antibacterial and odor removing functions has the advantages of good antibacterial effect, no toxicity, no radioactivity, greenness and safety.
Description
Technical Field
The invention belongs to the technical field of artificial stones, and particularly relates to a quartz stone with far infrared antibacterial and odor removing functions and a preparation process thereof.
Background
Quartz is a synthetic functional material. At present, the functional requirements on quartz stone include that substances harmful to human bodies and generating peculiar smells in the air, such as carcinogenic substances, formaldehyde and benzene, and gases such as toilet odorous substances, hydrogen sulfide and ammonia gas, can be effectively removed, molecular chains of harmful gases can be quickly scattered, the harmful gases are continuously decomposed into harmless carbon dioxide and water, the air is purified, the pollution is reduced, the home environment is improved, and the like.
At the end of 3 months in 2014, 15 academicians in two schools and nearly one hundred experts gather together to research the development of the terahertz scientific and technical strategy. Why can terahertz be studied by a large number of experts and scholars? Terahertz is the last virgin place of the electromagnetic spectrum in the Living class of academy of sciences in China, has unique superiority and extremely important application, and is the scientific and technical basis of a new generation of industry. There is a "vacuum zone" between millimeter waves and infrared, with a frequency of about 1 tera hertz, namely "terahertz (THz)", and this extremely special band is considered to be about to start "another revolution of the leading edge of technology in this century". Terahertz waves have breakthrough innovation application in a plurality of important fields of life science, material science, astronomy, atmosphere and environment monitoring, communication and the like. The terahertz technology has been classified as one of the major technologies affecting human beings in the 21 st century in advanced countries such as the European and American days, a great deal of manpower and material resources are invested for research, and various innovative achievements are successively published in the world. At present, the terahertz technology is applied to monitoring, communication and other aspects, and corresponding products are also available, but the research on the antibacterial aspect is not available for a while, and the research on the related fields is still to be strengthened by scientists.
Disclosure of Invention
According to the invention, a material capable of releasing terahertz electromagnetic waves is added into the quartz stone, so that the obtained quartz stone has the capability of continuously radiating terahertz waves, has excellent functions of resisting bacteria, removing formaldehyde and the like, is free of radioactivity, and is green and safe.
The invention discloses a quartz stone with far infrared antibiosis and odor removal functions, which is prepared from the following raw materials in parts by weight:
5-15 parts of unsaturated polyester resin, 0.5-2% of curing agent, 40-60 parts of quartz aggregate, 15-30 parts of quartz powder and 5-10 parts of material capable of releasing terahertz electromagnetic waves.
In some embodiments of the present invention, the material capable of releasing the terahertz electromagnetic wave is a composite lanthanide oxide, including at least two of lanthanum oxide, cerium oxide, and dysprosium oxide.
In some embodiments of the present invention, the material capable of releasing terahertz electromagnetic waves includes lanthanum oxide, cerium oxide, and dysprosium oxide.
In some embodiments of the invention, the weight ratio of lanthanum oxide, cerium oxide and dysprosium oxide is (1-5): (1-2): (1-2).
In some embodiments of the invention, the lanthanum oxide, cerium oxide and dysprosium oxide are in a weight ratio of 3:2:2.
in some embodiments of the present invention, the unsaturated polyester resin is at least one of o-benzene type unsaturated polyester resin, p-benzene type unsaturated polyester resin and m-benzene type unsaturated polyester resin, and may be morning resin 996A-6, morning resin 968D and rice huller resin HL-7121-1.
In some embodiments of the invention, the unsaturated polyester resin is an E-44 unsaturated polyester resin and the curing agent is t-butyl peroxy-2-ethylhexanoate.
In some embodiments of the invention, the quartz aggregate is 20-40 mesh quartz particles, and the quartz powder is 300-400 mesh quartz particles.
The second aspect of the invention discloses a preparation process of the quartz stone with far infrared antibiosis and odor removal of the first aspect, which comprises the following steps:
s01, mixing a material capable of releasing terahertz electromagnetic waves with unsaturated polyester resin;
s02, mixing with quartz aggregate and quartz powder;
s03, mixing with a curing agent;
and S04, pressing, forming and drying.
In some embodiments of the present invention, in S03, the curing agent is added dropwise with stirring.
In some embodiments of the invention, the dropping rate in S03 is 1-2mL/min.
In some embodiments of the invention, mixing is performed by a paddle stirrer, PID speed control is performed by the following algorithm:
wherein, the delta u (c) is the variation of the flow speed in the time interval of two times of speed testing; kc is a constant, 8-12; f (C) is the deviation of the C-th sampling time, f (C-1) is the deviation of the C-1-th sampling time, and f (C-2) is the deviation of the C-2-th sampling time; t is I Integration time is 1.0-2.0min; t is D Differential time, 1.5-2.0min; t is S The sampling period is 1.5-2.0s.
Through the PID speed control, the stirring speed can be accurately controlled, the mixing degree is ensured to be sufficient and uniform, and the system error among batches is eliminated.
The invention has the beneficial effects that:
the quartz stone with far infrared antibacterial and odor removing functions is not added with the existing antibacterial agents such as metal ions, biological antibacterial agents and the like, only is added with the material capable of releasing terahertz electromagnetic waves, and has the functions of resisting bacteria, removing formaldehyde and the like.
The antibacterial effect of the existing products such as nano antibacterial powder is reduced or even disappears along with the prolonging of time due to the factors such as agglomeration, surface pollution and the like, and the products can keep good antibacterial effect in the life cycle of the products after being tested.
The quartz stone with far infrared antibacterial and odor removing functions has the advantages of good antibacterial effect, no toxicity, no radioactivity, greenness and safety.
Drawings
FIG. 1 shows the antibacterial effect of example 2 of the present invention.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Unless otherwise specified, the examples and comparative examples are parallel tests with the same components, component contents, preparation steps, preparation parameters. The quartz aggregate is 20-40 mesh quartz particles, and the quartz powder is 300-400 mesh quartz particles. The unsaturated polyester resin is morning-treasure resin 996A-6, and the curing agent is tert-butyl peroxy-2-ethyl hexanoate.
Example 1
A quartz stone with far infrared antibacterial and odor removal functions is prepared from the following raw materials in parts by weight:
10 parts of unsaturated polyester resin, 0.1 part of curing agent, 50 parts of quartz aggregate, 20 parts of quartz powder, 5 parts of lanthanum oxide, 1 part of cerium oxide and 1 part of dysprosium trioxide.
The preparation process comprises the following steps:
and (2) taking lanthanum oxide, cerium oxide and dysprosium oxide, adding unsaturated polyester resin, uniformly stirring, adding quartz aggregate and quartz powder, and uniformly stirring. The curing agent was added dropwise with stirring at a rate of 1.5mL/min, and stirring was continued for 30min. And (5) pressing, molding and drying.
Example 2
A quartz stone with far infrared antibiosis and odor removal functions is prepared from the following raw materials in parts by weight:
10 parts of unsaturated polyester resin, 0.1 part of curing agent, 50 parts of quartz aggregate, 20 parts of quartz powder, 3 parts of lanthanum oxide, 2 parts of cerium oxide and 2 parts of dysprosium trioxide.
The preparation process comprises the following steps:
and (2) taking lanthanum oxide, cerium oxide and dysprosium oxide, adding unsaturated polyester resin, uniformly stirring, adding quartz aggregate and quartz powder, and uniformly stirring. The curing agent was added dropwise with stirring at a rate of 1.5mL/min, and stirring was continued for 30min. And (5) pressing, forming and drying.
Example 3
A quartz stone with far infrared antibiosis and odor removal functions is prepared from the following raw materials in parts by weight:
10 parts of unsaturated polyester resin, 0.1 part of curing agent, 50 parts of quartz aggregate, 20 parts of quartz powder, 1 part of lanthanum oxide, 2 parts of cerium oxide and 2 parts of dysprosium trioxide.
The preparation process comprises the following steps:
and (2) taking lanthanum oxide, cerium oxide and dysprosium oxide, adding unsaturated polyester resin, uniformly stirring, adding quartz aggregate and quartz powder, and uniformly stirring. The curing agent is added dropwise while stirring, the dropping speed is 1.5mL/min, and stirring is continued for 30min. And (5) pressing, forming and drying.
Example 4
A quartz stone with far infrared antibiosis and odor removal functions is prepared from the following raw materials in parts by weight:
10 parts of unsaturated polyester resin, 0.1 part of curing agent, 50 parts of quartz aggregate, 20 parts of quartz powder, 5 parts of lanthanum oxide and 2 parts of cerium oxide.
The preparation process comprises the following steps:
and (3) taking lanthanum oxide and cerium oxide, adding unsaturated polyester resin, uniformly stirring, adding quartz aggregate and quartz powder, and uniformly stirring. The curing agent was added dropwise with stirring, and stirring was continued for 30min. And (5) pressing, forming and drying.
Example 5
A quartz stone with far infrared antibiosis and odor removal functions is prepared from the following raw materials in parts by weight:
10 parts of unsaturated polyester resin, 0.1 part of curing agent, 50 parts of quartz aggregate, 20 parts of quartz powder, 5 parts of lanthanum oxide and 2 parts of dysprosium trioxide.
The preparation process comprises the following steps:
adding unsaturated polyester resin into lanthanum oxide and dysprosium oxide, stirring uniformly, adding quartz aggregate and quartz powder, and stirring uniformly. The curing agent was added dropwise with stirring at a rate of 1.5mL/min, and stirring was continued for 30min. And (5) pressing, molding and drying.
Example 6
A quartz stone with far infrared antibacterial and odor removal functions is prepared from the following raw materials in parts by weight:
10 parts of unsaturated polyester resin, 0.1 part of curing agent, 50 parts of quartz aggregate, 20 parts of quartz powder, 3.5 parts of cerium oxide and 3.5 parts of dysprosium trioxide.
The preparation process comprises the following steps:
and adding the unsaturated polyester resin into the cerium oxide and the dysprosium oxide, uniformly stirring, adding the quartz aggregate and the quartz powder, and uniformly stirring. The curing agent was added dropwise with stirring at a rate of 1.5mL/min, and stirring was continued for 30min. And (5) pressing, forming and drying.
Comparative example 1
The difference from example 1 is that silver oxide is used instead of dysprosium trioxide.
Experimental example 1
1.1
The quartz stones obtained in examples and comparative examples were measured for antibacterial property according to the method of "JCT 897-2014 antibacterial ceramic article antibacterial property", and the results are shown in Table 1.
TABLE 1 antibacterial Properties
The results show that the antibacterial effects of examples 1-3 are significantly better than those of examples 4-5 and comparative example 1 (P < 0.05). In examples 1 to 3, the most preferable example is example 2 (P < 0.05).
1.2
The quartz stones obtained in examples and comparative example 1 were used, and antibacterial durability was performed according to GB/T9266, and the washing liquid was sodium hypochlorite disinfectant solution with a concentration of 5%, and the number of washing times was 500.
The result shows that the antibacterial durability of the antibacterial agent in the example 2 is good, the antibacterial rate of the antibacterial agent to escherichia coli and staphylococcus aureus is kept above 99.99% after 500 times of washing, and the antibacterial rate of the antibacterial agent in the examples 1 and 3 is not obviously reduced (P is more than 0.05). Examples 4-6 showed 3-4% reduction in the antibacterial activity against E.coli and S.aureus. Comparative example 1 was significantly reduced to 92.3% and 90.5%.
Experimental example 2
The quartz stone obtained in example 2 was subjected to an acute oral toxicity test in accordance with GB/T21603-2008 test method for acute oral toxicity of chemicals.
The sample was thoroughly ground to a powder. 5g of the test substance is weighed, 0.5% carboxymethyl is added to the test substance to be constant volume of 20ml, and the test substance is mixed evenly.
SPF-grade KM mice: 10 males and 10 females, weight range 18-22g.
The GB/T21603-2008 chemical acute oral toxicity test method comprises the following detection environments: the ambient temperature is 20-26 ℃, and the relative humidity is 40-70%. Dose level: according to the requirements of the method, a one-time dose-limiting method (namely, a 5000mg/kg-BW body weight dose is orally taken by 20 animals) is adopted.
The testing steps are as follows: prior to the test, the experimental animals were fasted overnight without restriction of water. During the test, the animal weight is weighed, randomly grouped, and the gavage is performed for 1 time through mouth, the gavage amount is 0.2m1/10g of the animal weight each time, the animal is continuously fasted for 3 hours after the gavage, and then the animal is fed with normal diet. After infection, each animal is subjected to independent comprehensive recording, and the poisoning performance and the death condition of the experimental animals are observed for 14 days. Body weights were weighed at doses D0, D7 and D14.
The results show that the acute oral toxicity LD is applied to SPF KM mice 50 ＞5000mg/kg·BW。
Experimental example 3
The quartz stone obtained in example 2 was subjected to radionuclide limitation measurement according to GB6566-2010 construction material radionuclide limitation.
The results show that the method has the advantages of high yield, 226 Ra、 232 th and 40 k is 0.0Bq/kg.
Experimental example 4
The quartz stone obtained in example 2 was used, and the odor was measured in a test chamber, and the results are shown in Table 2.
TABLE 2 odor elimination function
The results show that the contents of formaldehyde, ammonia, benzene and hydrogen sulfide can be greatly reduced, and the removal rate is higher than 50%.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the embodiments and examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The quartz stone with far infrared antibacterial and odor removal functions is characterized by comprising the following components in parts by weight:
5-15 parts of unsaturated polyester resin, 0.5-2% by weight of curing agent, 40-60 parts of quartz aggregate, 15-30 parts of quartz powder and 5-10 parts of material capable of releasing terahertz electromagnetic waves.
2. The quartz stone with far infrared antibiosis and odor removal according to claim 1, wherein the material capable of releasing terahertz electromagnetic waves is a composite lanthanide oxide comprising at least two of lanthanum oxide, cerium oxide and dysprosium sesquioxide.
3. The quartz stone with far infrared antibiosis and odor removal according to claim 1 or 2, wherein the material capable of releasing terahertz electromagnetic waves comprises lanthanum oxide, cerium oxide and dysprosium oxide.
4. The quartz stone with far infrared antibiosis and odor removal functions as claimed in claim 3, wherein the weight ratio of lanthanum oxide, cerium oxide and dysprosium oxide is (1-5): (1-2): (1-2).
5. The quartz stone with far infrared antibiosis and odor removal functions as claimed in claim 3, wherein the weight ratio of lanthanum oxide, cerium oxide and dysprosium oxide is 3:2:2.
6. the quartz stone with far infrared antibacterial and odor removing functions as claimed in claim 1 or 2, wherein said unsaturated polyester resin is at least one of o-benzene type unsaturated polyester resin, p-benzene type unsaturated polyester resin and m-benzene type unsaturated polyester resin, and said curing agent is t-butyl peroxy-2-ethylhexanoate.
7. The quartz stone with far infrared antibiosis and odor removal as claimed in claim 1 or 2, wherein the quartz aggregate is 20-40 mesh quartz particles, and the quartz powder is 300-400 mesh quartz particles.
8. A process for preparing quartz stone with far infrared antibiosis and odor removal function according to any one of claims 1 to 7, is characterized by comprising the following steps:
s01, mixing a material capable of releasing terahertz electromagnetic waves with unsaturated polyester resin;
s02, mixing with quartz aggregate and quartz powder;
s03, mixing with a curing agent;
and S04, pressing, forming and drying.
9. The process for preparing quartz stone with far infrared antibacterial and odor removing effects as claimed in claim 8, wherein in S03, curing agent is added dropwise while stirring.
10. The process for preparing quartz stone with far infrared antibacterial and odor removing effects as claimed in claim 9, wherein in S03, the dropping speed is 1-2mL/min.
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