CN111363249A - Nano polypropylene slice and preparation method thereof - Google Patents
Nano polypropylene slice and preparation method thereof Download PDFInfo
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- CN111363249A CN111363249A CN202010380464.5A CN202010380464A CN111363249A CN 111363249 A CN111363249 A CN 111363249A CN 202010380464 A CN202010380464 A CN 202010380464A CN 111363249 A CN111363249 A CN 111363249A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
Abstract
The invention discloses a nano polypropylene slice and a preparation method thereof, belonging to the technical field of new material processing. The novel nano-powder material is fully mixed with conventional polypropylene slices and is made into a nano-polypropylene slice through a granulator. The nano polypropylene slice provided by the invention has super strong physical adsorption and chemical adsorption effects, thereby realizing super high-efficiency filtering function and super strong sterilization and bacteriostasis functions of the product.
Description
Technical Field
The invention belongs to the technical field of new material processing, and particularly relates to a nano polypropylene slice and a preparation method thereof.
Background
Air pollutants are ubiquitous in the environment. Contaminants include a variety of airborne respiratory infections, as well as new outbreaks, where aerosols become the major air contaminant, i.e., solid or liquid aerosols in the gas, in highly contaminated areas.
The hazards of air pollutants can be managed through the use of basic control measures, such as increased ventilation or providing workers with protective devices such as protective masks, to isolate harmful viruses from the air and to prevent the spread of viral bacteria.
Protective masks have been widely used by hospital staff, laboratory researchers, construction workers, and the general public in high-pollution areas, during flu seasons, or when new epidemics occur.
Most of the filtering and blocking layers of the conventional protective mask do not have the function of killing organisms or viruses. Thus, these protective masks serve as only a physical barrier to filter out contaminants. When viruses and bacteria are involved, these barriers do not kill them in situ. The ability to kill bacteria and/or viruses in situ is a desirable function of protective masks.
The melt-blown non-woven fabric is the main raw material of the protective mask. A large amount of water vapor is generally generated when the mask is worn, thereby affecting the electrostatic adsorption performance of the melt-blown nonwoven fabric.
The melt-blown non-woven fabric is a filter material which takes polypropylene as a main raw material, has a certain protective effect on dust particles and haze, but has poor killing and inhibiting capabilities on viruses and bacteria with the diameter of 2-5 microns, so that the protective effect of the mask is directly influenced.
Disclosure of Invention
The invention aims to provide a nano polypropylene chip and a preparation method thereof, wherein three nano-powder of nano-silicon dioxide, nano-titanium dioxide and nano-graphene are used as main body materials, and are mixed to prepare a novel nano-powder material which has super physical adsorption and chemical adsorption, thereby realizing super efficient filtering function, super virus killing and bacteria reproduction inhibiting functions, and realizing double 99 grades of melt-blown non-woven fabric, namely, the filtering efficiency of 0.3 micron dust and the killing efficiency of 2-5 micron virus reach 99 percent.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a nano polypropylene slice which is characterized in that the raw materials of the nano polypropylene slice comprise the following components in percentage by weight: 10-15% of nano powder material and 85-90% of polypropylene slices, wherein the sum of the weight percentages of the nano powder material and the polypropylene slices is equal to 100%, and the nano powder material comprises the following components in percentage by weight: 93 to 95 percent of nano-scale silicon dioxide, 1.0 to 2.0 percent of nano-scale titanium dioxide, 1.0 to 3.0 percent of nano-scale graphene, 1.0 to 2.0 percent of aluminate coupling agent and 0.5 to 1.5 percent of stearic acid, wherein the sum of the weight percentages of the nano-scale silicon dioxide, the nano-scale titanium dioxide, the nano-scale graphene, the aluminate coupling agent and the stearic acid is equal to 100 percent.
As a preferred technical scheme of the invention, the nano powder material comprises the following components in percentage by weight: 94% of nano-silicon dioxide, 1.5% of nano-titanium dioxide, 2.0% of nano-graphene, 1.5% of aluminate coupling agent and 1.0% of stearic acid.
The invention also provides a method for preparing the nano polypropylene slice, which is characterized by comprising the following steps in sequence:
step one, mixing nano powder materials
Respectively weighing nanoscale silicon dioxide, nanoscale titanium dioxide, nanoscale graphene, an aluminate coupling agent and stearic acid, putting into a mixer for mixing for 15 minutes at the rotating speed of 800-1200 revolutions per minute to obtain a nano powder material;
step two, putting the nano powder material and the polypropylene slices in the step one into a mixer for mixing for 5 minutes at the rotating speed of 300-400 rpm to obtain a nano polypropylene slice premix;
and step three, feeding the nano polypropylene slice premix in the step two into a granulator, heating and melting to obtain a nano polypropylene melt, filtering the nano polypropylene melt by a filter, feeding the nano polypropylene melt into a melt metering pump, controlling the nano polypropylene melt to be extruded in a continuous strip shape with the diameter phi 2mm to phi 5mm by the melt metering pump, and sequentially carrying out water cooling, air cooling, cutting off and inspection on the continuous strip-shaped nano polypropylene extruded by the screw to obtain a nano polypropylene slice finished product.
Through the design scheme, compared with the prior art, the invention can bring the following beneficial effects: the invention provides a nano polypropylene slice and a preparation method thereof, which take three nano powder materials of nano silicon dioxide, nano titanium dioxide and nano graphene as main bodies to be mixed to prepare a novel nano powder material, fully mix the novel nano powder material with a conventional polypropylene slice, and prepare the nano polypropylene slice through a granulator. The nano powder material provided by the invention has ultra-efficient physical adsorption, chemical adsorption and electrostatic adsorption functions. The nano polypropylene chip provided by the invention is a novel nano powder material prepared by mixing three nano powders of nano silicon dioxide, nano titanium dioxide and nano graphene serving as main materials, and has super physical adsorption and chemical adsorption, thereby realizing super efficient filtering function and super virus and bacteria killing function. The melt-blown non-woven fabric processed by the nano polypropylene slices has the advantages that the nano powder material has super strong adsorption effect, so that the melt-blown non-woven fabric has improved filtering performance, and the functions of killing viruses and inhibiting bacteria reproduction are enhanced. Can realize collecting medical, dustproof, antifog haze, antivirus and protective facial mask in an organic whole, moreover than ordinary melt-blown non-woven fabric protective facial mask more have security and reliability.
Drawings
FIG. 1 is a flow chart of a production process of a nano polypropylene chip.
Detailed Description
The invention takes three nano powder materials of nano silicon dioxide, nano titanium dioxide and nano graphene as main bodies to prepare a novel nano powder material by mixing, and the nano titanium dioxide can fully activate the silicon dioxide, so that the activation index of the silicon dioxide is greatly improved. After the activation index of the silicon dioxide is improved, not only are hydrogen bonds and silicon hydroxyl functional groups in the molecule more active, so that the chemical adsorption capacity of the nano-scale silicon dioxide is greatly enhanced, but also the water absorption capacity of pores in the silicon dioxide is increased, and the quantity of negative oxygen ions generated by water decomposition is greatly increased, so that the sterilization capacity and the bacteria reproduction inhibition capacity of the nano-scale silicon dioxide are enhanced. The stronger the water absorption capacity of the silicon dioxide, the greater the damage capacity to bacteria, viruses and toxic and harmful gas proteins, so that the death probability is greatly increased, the death time is greatly shortened, and the harm to a human body is greatly reduced. The nano-grade graphene is a new material with a very large specific surface and has very strong adsorption capacity. The novel nano powder material obtained by mixing the nano powder materials of nano silicon dioxide, nano titanium dioxide and nano graphene has super strong physical adsorption and chemical adsorption, thereby realizing super high-efficiency filtering function and super strong virus and bacteria killing function. The melt-blown non-woven fabric processed by the nano polypropylene slices has the advantages that the nano powder material has super strong adsorption effect and virus killing and bacteriostasis effects, so that the melt-blown non-woven fabric not only improves the filtering performance of dust particles, but also greatly enhances the function of killing viruses and bacteria, and can realize double 99 grades (the filtering efficiency and the virus killing efficiency of 0.3 micron dust can both reach 99%).
While the present invention will be described in conjunction with specific embodiments for the purpose of illustrating the invention more clearly, it is to be understood that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention, which is defined by the appended claims.
Example 1
The nano polypropylene slice is characterized in that the raw materials of the nano polypropylene slice comprise the following components in percentage by weight: 10% of nano powder material and 90% of polypropylene slices, wherein the nano powder material comprises the following components in percentage by weight: 93% of nano-scale silicon dioxide, 1.0% of nano-scale titanium dioxide, 3.0% of nano-scale graphene, 1.5% of aluminate coupling agent and 1.5% of stearic acid.
The method for preparing the nano polypropylene slice is characterized by comprising the following steps in sequence:
step one, mixing nano powder materials
Respectively weighing nanoscale silicon dioxide, nanoscale titanium dioxide, nanoscale graphene, an aluminate coupling agent and stearic acid, putting into a mixer, mixing for 15 minutes at the rotating speed of 800 rpm to obtain a nano powder material;
step two, putting the nano powder material and the polypropylene slices in the step one into a mixer for mixing, wherein the mixing time is 5 minutes, and the rotating speed of the mixer is 300 revolutions per minute, so as to obtain a nano polypropylene slice premix;
and step three, feeding the nano polypropylene slice premix in the step two into a granulator, heating and melting to obtain a nano polypropylene melt, filtering the nano polypropylene melt by a filter, feeding the nano polypropylene melt into a melt metering pump, controlling the nano polypropylene melt to be extruded in a continuous strip shape with the diameter phi of 2mm by the melt metering pump, and sequentially carrying out water cooling, air cooling, cutting off and inspection on the continuous strip-shaped polypropylene extruded by the screw to obtain a nano polypropylene slice finished product.
Example 2
The nano polypropylene slice is characterized in that the raw materials of the nano polypropylene slice comprise the following components in percentage by weight: 12% of nano powder material and 88% of polypropylene slice, wherein the nano powder material comprises the following components in percentage by weight: 94% of nano-silicon dioxide, 1.5% of nano-titanium dioxide, 2.0% of nano-graphene, 1.5% of aluminate coupling agent and 1.0% of stearic acid.
The method for preparing the nano polypropylene slice is characterized by comprising the following steps in sequence:
step one, mixing nano powder materials
Respectively weighing nanoscale silicon dioxide, nanoscale titanium dioxide, nanoscale graphene, an aluminate coupling agent and stearic acid, putting into a mixer, mixing for 15 minutes at the rotating speed of 1000 rpm to obtain a nano powder material;
step two, putting the nano powder material and the polypropylene slices in the step one into a mixer for mixing, wherein the mixing time is 5 minutes, and the rotating speed of the mixer is 350 revolutions per minute, so as to obtain a nano polypropylene slice premix;
and step three, feeding the nano polypropylene slice premix in the step two into a granulator, heating and melting to obtain a nano polypropylene melt, filtering the nano polypropylene melt by a filter, feeding the nano polypropylene melt into a melt metering pump, controlling the nano polypropylene melt to be extruded in a continuous strip shape with the diameter phi of 3.5mm by the melt metering pump, and sequentially carrying out water cooling, air cooling, cutting off and inspection on the continuous strip-shaped nano polypropylene extruded by the screw to obtain a nano polypropylene slice finished product.
Example 3
The nano polypropylene slice is characterized in that the raw materials of the nano polypropylene slice comprise the following components in percentage by weight: 15% of nano powder material and 85% of polypropylene slices, wherein the nano powder material comprises the following components in percentage by weight: 95% of nano-scale silicon dioxide, 2.0% of nano-scale titanium dioxide, 1.0% of nano-scale graphene, 1.5% of aluminate coupling agent and 0.5% of stearic acid.
The method for preparing the nano polypropylene slice is characterized by comprising the following steps in sequence:
step one, mixing nano powder materials
Respectively weighing nanoscale silicon dioxide, nanoscale titanium dioxide, nanoscale graphene, an aluminate coupling agent and stearic acid, putting into a mixer, mixing for 15 minutes at the rotating speed of 1200 rpm to obtain a nano powder material;
step two, putting the nano powder material and the polypropylene slices in the step one into a mixer for mixing, wherein the mixing time is 5 minutes, and the rotating speed of the mixer is 400 revolutions per minute, so as to obtain a nano polypropylene slice premix;
and step three, feeding the nano polypropylene slice premix in the step two into a granulator, heating and melting to obtain a nano polypropylene melt, filtering the nano polypropylene melt by a filter, feeding the nano polypropylene melt into a melt metering pump, controlling the nano polypropylene melt to be extruded in a continuous strip shape with the diameter phi of 5mm by the melt metering pump, and sequentially carrying out water cooling, air cooling, cutting off and inspection on the strip-shaped nano polypropylene extruded by the screw to obtain a nano polypropylene slice finished product.
The invention provides a nano polypropylene slice and a preparation method thereof, which take three nano powder materials of nano silicon dioxide, nano titanium dioxide and nano graphene as main bodies to be mixed to prepare a novel nano powder material, the novel nano powder material is fully mixed with a conventional polypropylene slice, and the nano polypropylene slice is prepared by a granulator. The melt-blown non-woven fabric prepared by using the nano polypropylene slices as the raw material has double 99-grade quality (both the 0.3 micron dust filtration efficiency and the virus killing efficiency reach 99 percent), and the application technical performance of the melt-blown non-woven fabric is far superior to that of the common melt-blown non-woven fabric. The melt-blown non-woven mask can integrate medical use, dust prevention, haze prevention, virus prevention and general protection, and realizes the functions of super-strong and super-efficient filtration, virus and bacteria killing, bacteria inhibition and virus propagation. The principle is that the nano powder material has super-efficient physical adsorption, chemical adsorption and electrostatic adsorption. The nano polypropylene slice provided by the invention can make the technical application performance of medical, dustproof and protective masks qualitatively leap, can realize high-quality development of the mask industry, and can bring subversive change to the mask industry. The invention is a nano polypropylene slice and a preparation method thereof, which fill the blank at home and abroad, has obvious technical innovation, and can not estimate the contribution value to the health and safety of human beings.
Claims (3)
1. The nano polypropylene slice is characterized in that the raw materials of the nano polypropylene slice comprise the following components in percentage by weight: 10-15% of nano powder material and 85-90% of polypropylene slices, wherein the sum of the weight percentages of the nano powder material and the polypropylene slices is equal to 100%, and the nano powder material comprises the following components in percentage by weight: 93 to 95 percent of nano-scale silicon dioxide, 1.0 to 2.0 percent of nano-scale titanium dioxide, 1.0 to 3.0 percent of nano-scale graphene, 1.0 to 2.0 percent of aluminate coupling agent and 0.5 to 1.5 percent of stearic acid, wherein the sum of the weight percentages of the nano-scale silicon dioxide, the nano-scale titanium dioxide, the nano-scale graphene, the aluminate coupling agent and the stearic acid is equal to 100 percent.
2. The nano-polypropylene chip according to claim 1, wherein: the nano powder material comprises the following components in percentage by weight: 94% of nano-silicon dioxide, 1.5% of nano-titanium dioxide, 2.0% of nano-graphene, 1.5% of aluminate coupling agent and 1.0% of stearic acid.
3. A method for preparing nano polypropylene chips according to claim 1 or 2, comprising the following steps in sequence:
step one, mixing nano powder materials
Respectively weighing nanoscale silicon dioxide, nanoscale titanium dioxide, nanoscale graphene, an aluminate coupling agent and stearic acid, putting into a mixer for mixing for 15 minutes at the rotating speed of 800-1200 revolutions per minute to obtain a nano powder material;
step two, putting the nano powder material and the polypropylene slices in the step one into a mixer for mixing for 5 minutes at the rotating speed of 300-400 rpm to obtain a nano polypropylene slice premix;
and step three, feeding the nano polypropylene slice premix in the step two into a granulator, heating and melting to obtain a nano polypropylene melt, filtering the nano polypropylene melt by a filter, feeding the nano polypropylene melt into a melt metering pump, controlling the nano polypropylene melt to be extruded in a continuous strip shape with the diameter phi 2mm to phi 5mm by the melt metering pump, and sequentially carrying out water cooling, air cooling, cutting off and inspection on the continuous strip-shaped nano polypropylene extruded by the screw to obtain a nano polypropylene slice finished product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522802A (en) * | 2020-12-15 | 2021-03-19 | 湖南工程学院 | Anti-ultraviolet antibacterial polypropylene filament and preparation method thereof |
| WO2022021112A1 (en) * | 2020-07-29 | 2022-02-03 | 杨亦 | Mask having replaceable filter structure |
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| CN109701504A (en) * | 2018-12-17 | 2019-05-03 | 宿迁市美达净化科技有限公司 | A kind of graphene antibacterial mask filtering material and its preparation method and application |
| CN109824978A (en) * | 2019-01-18 | 2019-05-31 | 中国航发北京航空材料研究院 | A kind of graphene/polypropylene composite materials master batch, fusion spray cloth and preparation method thereof |
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2020
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Patent Citations (4)
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| CN107227555A (en) * | 2017-07-21 | 2017-10-03 | 江苏科来材料科技有限公司 | A kind of nano modification melt-blown non-woven cloth material and its manufacture method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021112A1 (en) * | 2020-07-29 | 2022-02-03 | 杨亦 | Mask having replaceable filter structure |
| CN112522802A (en) * | 2020-12-15 | 2021-03-19 | 湖南工程学院 | Anti-ultraviolet antibacterial polypropylene filament and preparation method thereof |
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Application publication date: 20200703 |