CN111004459A - Preparation method of natural plant antibacterial PVC plastic product - Google Patents
Preparation method of natural plant antibacterial PVC plastic product Download PDFInfo
- Publication number
- CN111004459A CN111004459A CN201911420584.7A CN201911420584A CN111004459A CN 111004459 A CN111004459 A CN 111004459A CN 201911420584 A CN201911420584 A CN 201911420584A CN 111004459 A CN111004459 A CN 111004459A
- Authority
- CN
- China
- Prior art keywords
- fat
- preparation
- plastic product
- pvc plastic
- soluble
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a preparation method of a natural plant bacteriostatic PVC plastic product, wherein the mass content of a fat-soluble plant extract in the PVC plastic product is 0.1-5%. The content of the fat-soluble wormwood extract in the antibacterial PVC prepared by the invention is 0.1-5%, preferably 2.4-4.6%; the content of the phase-change microcapsule is 2-2.5%; the antibacterial PVC prepared by the invention has the tensile strength of 14.5-14.8 MPa, the elongation at break of 312-320% and the Shore hardness of 78-80; carrying out heat aging treatment at 80 ℃ for 168h, wherein the residual rate of the tensile strength is 94.2-94.6%; the elongation at break residual rate after 168h of heat aging treatment at 80 ℃ is 93.5-93.9%.
Description
Technical Field
The invention provides a preparation method of a natural plant bacteriostatic PVC plastic product, belonging to the technical field of functional plastics.
Background
Polyvinyl chloride, abbreviated as PVC in English, is an initiator of vinyl chloride monomer in peroxide, azo compounds and the like; or a polymer polymerized by a free radical polymerization mechanism under the action of light and heat. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.
PVC is white powder with an amorphous structure, the branching degree is small, the relative density is about 1.4, the glass transition temperature is 77-90 ℃, decomposition starts at about 170 ℃, the stability to light and heat is poor, the PVC can be decomposed to generate hydrogen chloride at more than 100 ℃ or after long-time sunshine insolation, further the hydrogen chloride is automatically catalyzed and decomposed to cause color change, the physical and mechanical properties are also rapidly reduced, and a stabilizer must be added in practical application to improve the stability to heat and light.
PVC has been the most widely used plastic in the world and is used in a very wide range of applications. The product has wide application in building materials, industrial products, daily necessities, floor leathers, floor tiles, artificial leathers, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and the like.
In the prior art, inorganic or organic antibacterial agents are usually added to prepare PVC products with antibacterial and mildewproof effects, but the inorganic or organic antibacterial agents have certain potential safety hazards and do not meet the requirements of the public on healthy, environment-friendly and safe plastic products.
Plant extracts with natural bacteriostatic activity are added into plastics to prepare functional PVC products, which is not reported in the prior art. In the related experiments of the applicant, the plant extract is found that the plant extract is not high-temperature resistant, is easy to carbonize or lose when being melted and blended with PVC resin to prepare a plastic product, reduces the functionality of the plastic product, and the addition of the plant extract also influences the tensile strength and the elongation at break of PVC and reduces the anti-aging capability of the PVC product.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method of a natural plant bacteriostatic PVC plastic product, which realizes the following purposes:
(1) reducing loss of plant extract; improve the natural antibacterial effect of the PVC plastic product.
(2) The tensile strength, the elongation at break and the ageing resistance of the PVC plastic product are improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a natural plant bacteriostatic PVC plastic product comprises the following step of enabling the mass content of fat-soluble plant extracts in the PVC plastic product to be 0.1-5%.
The following is a further improvement of the above technical solution:
preparation method of natural plant antibacterial PVC plastic product
The method comprises the following steps:
(1) microwave treatment
Naturally drying or drying the leaf part of the plant at low temperature, cutting into small pieces with the area of less than 4mm2, and then performing microwave treatment, wherein the microwave treatment power is 2-4kw, the time is 6-8min, the ventilation rate is 20-25m3/h, the treatment rate is 12-15kg/h, and the water content of the treated plant leaf is 8-9%.
(2) Preparation of fat-soluble plant extract
Carrying out subcritical propane treatment on plant leaves subjected to microwave treatment, wherein the subcritical propane treatment method comprises the steps of putting 200-300g of plant leaves subjected to microwave treatment into a gauze bag and putting the gauze bag into an extraction tank to ensure that the plant leaves cannot leak out of the gauze bag, vacuumizing a system, leading the pressure in a container to be negative pressure, introducing nitrogen to remove residual air, vacuumizing again, injecting propane for extraction under the subcritical condition, wherein the flow rate of propane is 7-10kg/h, then setting the extraction pressure to be 1-2MPa, the extraction temperature to be 38-42 ℃, the material-liquid ratio to be 1:4-5, the extraction time to be 0.5-1h, the pressure of a primary separator to be 1-2MPa and the temperature to be 35-38 ℃; the pressure of the secondary separator is 0.7-1MPa, the temperature is 39-44 ℃, the intermittent treatment is carried out for 1-2 times, the extraction is simultaneously assisted by ultrasonic waves, the power density of the ultrasonic waves is 100-120W/L, and the ultrasonic frequency is 55-60 KHz; separating to obtain liposoluble plant extract.
(3) Dissolution
Dissolving the obtained fat-soluble plant extract with solvent to obtain oil solution containing fat-soluble plant extract;
the solvent is ethyl acetate;
the oil containing fat-soluble plant extract contains fat-soluble plant extract 20-30%.
(4) Adding phase-change microcapsules
Adding the oil agent containing the fat-soluble plant extract into the phase-change microcapsule, and stirring and mixing uniformly to obtain a mixed solution of the fat-soluble plant extract and the phase-change microcapsule;
in the mixed solution, the mass ratio of the fat-soluble plant extract to the phase-change microcapsule is 1: 0.5-1;
the phase-change microcapsule has the particle size D97 of 1-2 mu m, is prepared by coating a phase-change material with a capsule wall material, and the phase-change material consists of n-forty alkane and paraffin in a mass ratio of 5-7: 1.
(5) Preparation of plant functional PVC plastic product
Uniformly mixing 95-100 parts of PVC resin, 10-15 parts of plasticizer, 2-3 parts of compatilizer, 6-8 parts of heat stabilizer and 1-3 parts of lubricant, and adding the mixture into a single-screw extruder, wherein the temperature of a first zone is 110-; the rotation speed of the screw extruder is 30 rpm;
injecting the mixed solution of the fat-soluble plant extract and the phase-change microcapsule into a mixing module from the side, then fully mixing, then extruding in a machine head, wherein the temperature of the machine head is 140-145 ℃, cooling after demolding, and reducing to 25-30 ℃ to prepare the PVC sheet;
the mass ratio of the added amount of the fat-soluble plant extract to the PVC resin is as follows: 3.5-6: 95-100;
the plasticizer consists of epoxy fatty acid methyl ester, monomethyl succinate and ethylene propylene diene monomer rubber in a mass ratio of 3:4: 1;
the compatilizer is composed of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene, and the mass ratio is 1: 1;
the melt index of the maleic anhydride grafted polyethylene is 3.5g/10min, the grafting rate is 1.2 percent,
the melt index of the maleic anhydride grafted polypropylene is 36.2g/10min, and the grafting rate is 0.9%.
The invention has the following beneficial effects:
(1) the content of the fat-soluble wormwood extract in the antibacterial PVC prepared by the invention is 0.1-5%, preferably 2.4-4.6%; the content of the phase-change microcapsule is 2-2.5%.
(2) The antibacterial PVC prepared by the invention has the tensile strength of 14.5-14.8 MPa, the elongation at break of 312-320% and the Shore hardness of 78-80; carrying out heat aging treatment at 80 ℃ for 168h, wherein the residual rate of the tensile strength is 94.2-94.6%; the elongation at break residual rate after 168h of heat aging treatment at 80 ℃ is 93.5-93.9%.
(3) The bacteriostatic PVC prepared by the invention has the bacteriostatic rate of 95.4-97.7% on escherichia coli, 95.1-96.8% on staphylococcus aureus and 94.6-96.7% on candida albicans.
Detailed Description
Example 1 preparation method of bacteriostatic natural plant PVC plastic product
The method comprises the following steps:
(1) microwave treatment
Naturally drying or drying the leaf part of the wormwood at low temperature, cutting the wormwood into small blocks with the area of less than 4mm2, and then performing microwave treatment, wherein the microwave treatment power is 2kw, the time is 6min, the ventilation rate is 20m3/h, the treatment rate is 12kg/h, and the water content of the wormwood after treatment is 8%.
(2) Preparation of fat-soluble wormwood plant extract
Carrying out subcritical propane treatment on the mugwort subjected to microwave treatment, wherein the subcritical propane treatment method comprises the steps of putting 200g of the mugwort subjected to microwave treatment into a gauze bag, putting the gauze bag into an extraction tank to ensure that the mugwort cannot leak out of the gauze bag, vacuumizing a system, leading the pressure in a container to be negative pressure, introducing nitrogen to remove residual air completely, vacuumizing again, injecting propane for extraction under subcritical conditions, wherein the propane flow is 7kg/h, then setting the extraction pressure to be 1MPa, the extraction temperature to be 38 ℃, the material-liquid ratio to be 1:4, the extraction time to be 0.5h, the pressure of a primary separator to be 1MPa and the temperature to be 35 ℃; the pressure of the secondary separator is 0.7MPa, the temperature is 39 ℃, the intermittent treatment is carried out for 1 time, the extraction is simultaneously assisted by ultrasonic waves, the power density of the ultrasonic waves is 100W/L, and the ultrasonic frequency is 55 KHz; separating to obtain fat-soluble folium Artemisiae Argyi plant extract.
(3) Dissolution
Dissolving the obtained fat-soluble wormwood plant extract by using a solvent to prepare an oil agent containing the fat-soluble wormwood plant extract;
the solvent is ethyl acetate;
the oil containing the fat-soluble wormwood plant extract has the content of the fat-soluble wormwood plant extract of 20 percent.
(4) Adding phase-change microcapsules
Adding the oil agent containing the fat-soluble wormwood plant extract into the phase-change microcapsule, and uniformly stirring and mixing to obtain a mixed solution of the fat-soluble wormwood plant extract and the phase-change microcapsule;
in the mixed solution, the mass ratio of the fat-soluble wormwood plant extract to the phase-change microcapsules is 1: 0.5;
the phase-change microcapsule has the particle size D97 of 1 mu m, is prepared by coating a phase-change material with a capsule wall material, and the phase-change material consists of n-forty alkane and paraffin in a mass ratio of 5: 1.
(5) Preparation of plant functional PVC plastic product
Uniformly mixing 95 parts of PVC resin, 10 parts of plasticizer, 2 parts of compatilizer, 6 parts of heat stabilizer and 1 part of lubricant, adding the mixture into a single-screw extruder, and setting the temperature of a first zone to be 100 ℃, the temperature of a second zone to be 110 ℃, the temperature of a third zone to be 120 ℃, the temperature of a fourth zone to be 130 ℃, the temperature of a fifth zone to be 135 ℃, and the temperature of the fifth zone to be a mixing module; the rotation speed of the screw extruder is 30 rpm;
injecting the mixed liquid of the fat-soluble wormwood plant extract and the phase-change microcapsules into a mixing module from the side, then fully mixing, then extruding in a machine head, wherein the temperature of the machine head is 140 ℃, cooling after demolding, and cutting according to the specified size when the temperature is reduced to 25 ℃ to obtain the PVC elastomer material for the outer cylinder tabletting of the washing machine.
The mass ratio of the addition amount of the fat-soluble wormwood plant extract to the PVC resin is as follows: 6: 95;
the plasticizer consists of epoxy fatty acid methyl ester, monomethyl succinate and ethylene propylene diene monomer rubber in a mass ratio of 3:4: 1;
the compatilizer is composed of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene, and the mass ratio is 1: 1;
the melt index of the maleic anhydride grafted polyethylene is 3.5g/10min, the grafting rate is 1.2 percent,
the melt index of the maleic anhydride grafted polypropylene is 36.2g/10min, and the grafting rate is 0.9%.
Example 2 preparation method of natural plant bacteriostatic PVC plastic product
The method comprises the following steps:
(1) microwave treatment
Naturally drying the leaf parts of the sarcandra glabra in the sun or at low temperature, cutting the leaf parts into small pieces with the area of less than 4mm2, and then performing microwave treatment, wherein the microwave treatment power is 4kw, the time is 8min, the ventilation rate is 25m3/h, the treatment rate is 15kg/h, and the water content of the treated sarcandra glabra is 9%.
(2) Preparation of fat-soluble sarcandra glabra plant extract
Carrying out subcritical propane treatment on the sarcandra glabra subjected to microwave treatment, wherein the subcritical propane treatment method comprises the steps of putting 200-300g of sarcandra glabra subjected to microwave treatment into a gauze bag and putting the gauze bag into an extraction tank to ensure that the sarcandra glabra cannot leak out of the gauze bag, vacuumizing a system to ensure that the pressure in a container is negative pressure, introducing nitrogen to remove residual air, vacuumizing again, injecting propane for extraction under subcritical conditions, wherein the flow rate of propane is 10kg/h, then setting the extraction pressure to be 2MPa, the extraction temperature to be 42 ℃, the material-liquid ratio to be 1: 5, the extraction time to be 1h, the pressure of a primary separator to be 2MPa and the temperature to be 38 ℃; the pressure of the secondary separator is 1MPa, the temperature is 44 ℃, the intermittent treatment is carried out for 2 times, the extraction is simultaneously assisted by ultrasonic waves, the power density of the ultrasonic waves is 120W/L, and the ultrasonic frequency is 60 KHz; removing solvent under reduced pressure, and separating to obtain fat soluble herba Pileae Scriptae plant extract.
(3) Dissolution
Dissolving the obtained fat-soluble sarcandra glabra plant extract by using a solvent to prepare an oil agent containing the fat-soluble sarcandra glabra plant extract;
the solvent is ethyl acetate;
the oil containing the fat-soluble sarcandra glabra plant extract has the content of 30 percent of the fat-soluble sarcandra glabra plant extract.
(4) Adding phase-change microcapsules
Adding the oil agent containing the fat-soluble sarcandra glabra plant extract into the phase-change microcapsule, and uniformly stirring and mixing to obtain a mixed solution of the fat-soluble sarcandra glabra plant extract and the phase-change microcapsule;
in the mixed solution, the mass ratio of the fat-soluble sarcandra glabra plant extract to the phase-change microcapsule is 1: 1;
the phase-change microcapsule has the particle size D97 of 2 microns and is prepared by coating a phase-change material with a capsule wall material, wherein the phase-change material consists of n-forty alkane and paraffin in a mass ratio of 7: 1.
(5) Preparation of plant functional PVC plastic product
Uniformly mixing 100 parts of PVC resin, 15 parts of plasticizer, 3 parts of compatilizer, 8 parts of heat stabilizer and 3 parts of lubricant, adding the mixture into a single-screw extruder, and setting the temperature of a first zone to be 110 ℃, the temperature of a second zone to be 120 ℃, the temperature of a third zone to be 130 ℃, the temperature of a fourth zone to be 135 ℃, the temperature of a fifth zone to be 140 ℃ and the temperature of a fifth zone to be a mixing module; the rotation speed of the screw extruder is 30 rpm;
injecting the mixed liquid of the fat-soluble sarcandra glabra plant extract and the phase-change microcapsule into a mixing module from the side, then fully mixing, then extruding in a machine head, wherein the temperature of the machine head is 145 ℃, cooling after demolding, and reducing to 30 ℃ to prepare the PVC sheet.
The model of the PVC resin is SG-3;
the mass ratio of the addition amount of the fat-soluble sarcandra glabra plant extract to the PVC resin is as follows: 3.5: 100;
the plasticizer consists of epoxy fatty acid methyl ester, monomethyl succinate and ethylene propylene diene monomer rubber in a mass ratio of 3:4: 1;
the compatilizer is composed of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene, and the mass ratio is 1: 1;
the melt index of the maleic anhydride grafted polyethylene is 3.5g/10min, the grafting rate is 1.2 percent,
the melt index of the maleic anhydride grafted polypropylene is 36.2g/10min, and the grafting rate is 0.9%.
Comparative example 1:
on the basis of example 1, no phase-change microcapsule is added, other process conditions are the same as those of example 1, and the test results are shown in table 1.
TABLE 1
The invention extracts fat-soluble components from one or more of wormwood, sarcandra glabra, lavender, valerian and seaweed,
or a specific fat-soluble functional component in the plants, such as salicylic acid, emodin, menthol, menthone, hyperin, linalool, caffeic acid, calcium alginate and the like, can be directly adopted, so that the technical effect of the embodiment 1 can be achieved or is superior to the technical effect of the embodiment 1.
The fat-soluble ingredients are not limited to the extracts from the wormwood, sarcandra glabra, lavender, valerian and seaweed, and other natural plants rich in fat-soluble antibacterial ingredients are also suitable for the invention; the single specific fat-soluble functional component is not limited to one or more of salicylic acid, emodin, menthol, menthone, hyperoside, linalool, caffeic acid and calcium alginate, and substances with fat solubility and antibacterial activity are also suitable for the invention.
Unless otherwise specified, the proportions used in the present invention are mass proportions, and the percentages used are mass percentages.
The process of the present invention will be further illustrated by the following examples, but the present invention is not limited to the examples listed, but also includes any other known variations within the scope of the claims of the present invention.
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the most preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A preparation method of a natural plant bacteriostatic PVC plastic product is characterized by comprising the following steps: in the PVC plastic product, the mass content of the fat-soluble plant extract is 0.1-5%.
2. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 1, which is characterized in that: the fat-soluble plant extract is one or more fat-soluble components extracted from one or more of folium Artemisiae Argyi extract, herba Pileae Scriptae extract, Lavender extract, rhizoma et radix Valerianae extract, and Sargassum extract.
3. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 1, which is characterized in that: the preparation method comprises the steps of dissolving and adding the phase change microcapsule to prepare the plant functional PVC plastic product.
4. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 3, which is characterized in that: dissolving the fat-soluble plant extract by adopting a solvent to prepare an oil agent containing the fat-soluble plant extract; the oil containing fat-soluble plant extract contains fat-soluble plant extract 20-30%.
5. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 3, which is characterized in that: adding the phase-change microcapsule, namely adding the oil agent containing the fat-soluble plant extract into the phase-change microcapsule, and uniformly stirring and mixing to obtain a mixed solution of the fat-soluble plant extract and the phase-change microcapsule;
in the mixed solution, the mass ratio of the fat-soluble plant extract to the phase-change microcapsule is 1: 0.5-1;
the phase-change microcapsule has the particle size D97 of 1-2 mu m, is prepared by coating a phase-change material with a capsule wall material, and the phase-change material consists of n-forty alkane and paraffin in a mass ratio of 5-7: 1.
6. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 3, which is characterized in that: the preparation method of the plant functional PVC plastic product comprises the steps of uniformly mixing 95-100 parts of PVC resin, 10-15 parts of plasticizer, 2-3 parts of compatilizer, 6-8 parts of heat stabilizer and 1-3 parts of lubricant, and then carrying out melt extrusion to prepare the natural plant antibacterial PVC plastic product.
7. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 6, which is characterized in that: the melt extrusion is carried out by setting the temperature of a first zone at 110-; the rotation speed of the screw extruder is 30 rpm; injecting the mixed liquid of the fat-soluble plant extract and the phase-change microcapsule into a mixing module from the side, then fully mixing, and then extruding in a machine head at the temperature of 140-145 ℃, and melting and extruding.
8. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 6, which is characterized in that:
the mass ratio of the added amount of the fat-soluble plant extract to the PVC resin is as follows: 3.5-6: 95-100;
the plasticizer consists of epoxy fatty acid methyl ester, monomethyl succinate and ethylene propylene diene monomer rubber in a mass ratio of 3:4: 1;
the compatilizer is composed of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene, and the mass ratio is 1: 1;
the melt index of the maleic anhydride grafted polyethylene is 3.5g/10min, the grafting rate is 1.2 percent,
the melt index of the maleic anhydride grafted polypropylene is 36.2g/10min, and the grafting rate is 0.9%.
9. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 3, which is characterized in that: the preparation method also comprises the preparation of fat-soluble plant extract; the preparation of the fat-soluble plant extract comprises the steps of carrying out subcritical propane treatment on plant leaves subjected to microwave treatment, wherein the subcritical propane treatment is carried out by injecting propane to carry out extraction under the subcritical condition, the flow rate of the propane is 7-10kg/h, then setting the extraction pressure to be 1-2MPa, the extraction temperature to be 38-42 ℃, the material-liquid ratio to be 1:4-5, the extraction time to be 0.5-1h, the pressure of a primary separator to be 1-2MPa and the temperature to be 35-38 ℃; the pressure of the secondary separator is 0.7-1MPa, the temperature is 39-44 ℃, the intermittent treatment is carried out for 1-2 times, the extraction is simultaneously assisted by ultrasonic waves, the power density of the ultrasonic waves is 100-120W/L, and the ultrasonic frequency is 55-60 KHz; separating to obtain liposoluble plant extract.
10. The preparation method of the natural plant bacteriostatic PVC plastic product according to claim 9, characterized by comprising the following steps: the microwave treatment comprises the steps of naturally drying or drying at low temperature the leaf parts of the plants, cutting the leaf parts into small pieces with the area of less than 4mm2, and then performing microwave treatment, wherein the microwave treatment power is 2-4kw, the time is 6-8min, the ventilation rate is 20-25m3/h, the treatment rate is 12-15kg/h, and the water content of the treated plant leaf is 8-9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420584.7A CN111004459A (en) | 2019-12-31 | 2019-12-31 | Preparation method of natural plant antibacterial PVC plastic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420584.7A CN111004459A (en) | 2019-12-31 | 2019-12-31 | Preparation method of natural plant antibacterial PVC plastic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111004459A true CN111004459A (en) | 2020-04-14 |
Family
ID=70120205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911420584.7A Withdrawn CN111004459A (en) | 2019-12-31 | 2019-12-31 | Preparation method of natural plant antibacterial PVC plastic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111004459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719246A (en) * | 2020-06-03 | 2020-09-29 | 百事基材料（青岛）股份有限公司 | Olive anti-attenuation high-strength PP spunbonded non-woven fabric |
| CN113265111A (en) * | 2021-04-29 | 2021-08-17 | 海南联塑科技实业有限公司 | High-heat-resistance polyvinyl chloride composition and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892894A (en) * | 2018-07-17 | 2018-11-27 | 桐城市钰锦塑料包装有限公司 | A kind of multi-functional PVC decorative material |
-
2019
- 2019-12-31 CN CN201911420584.7A patent/CN111004459A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892894A (en) * | 2018-07-17 | 2018-11-27 | 桐城市钰锦塑料包装有限公司 | A kind of multi-functional PVC decorative material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719246A (en) * | 2020-06-03 | 2020-09-29 | 百事基材料（青岛）股份有限公司 | Olive anti-attenuation high-strength PP spunbonded non-woven fabric |
| CN113265111A (en) * | 2021-04-29 | 2021-08-17 | 海南联塑科技实业有限公司 | High-heat-resistance polyvinyl chloride composition and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111004459A (en) | Preparation method of natural plant antibacterial PVC plastic product | |
| CN104672698B (en) | A kind of stone plastic composite materials | |
| CN102140255A (en) | Hot-press type wood plastic composite for toy and preparation method thereof | |
| CN103554670A (en) | Antibacterial agent composite film material | |
| CN103205133A (en) | Functional floor tile produced by using waste PVC and agricultural waste | |
| CN105348547A (en) | Anionic SBS emulsion, preparation method and application thereof | |
| CN104910430A (en) | Full-degradable plastic film used for far-infrared food fresh-keeping and preparation method thereof | |
| CN108314804A (en) | The preparation method of graphene modified PVA composite material | |
| CN101864184B (en) | Thermoplastic vegetable fiber/starch blending material and preparation method thereof | |
| CN109054153A (en) | A kind of corrosion-resistant high density polyethylene (HDPE) feed pipe and preparation method thereof | |
| CN108690310A (en) | A method of preparing low VOC foaming grafted olefin polymers using supercritical technology | |
| CN106046620B (en) | A kind of polyvinyl chloride plastic wood and preparation method thereof | |
| CN108059782A (en) | A kind of igelite particle and preparation method thereof | |
| CN108102196B (en) | Preparation method of plastic-wood section bar with high flame retardant property | |
| CN105968826A (en) | Preparation method of environment-friendly edible food packaging film | |
| CN101864095A (en) | Thermoplastic konjac glucomannan/starch blending material and preparation method thereof | |
| CN102140223A (en) | Thermoplastic glucomannan/animal protein blend material and preparation method thereof | |
| CN104987637A (en) | Lignin-based compound heat stabilizer and method for improving heat stability of polyvinyl alcohol | |
| CN104292392A (en) | Preparation method of high-purity grafted functionalized copolymer | |
| CN111607203A (en) | Reinforced and toughened poly (butylene adipate)/terephthalate-polylactic acid) composite film and preparation method thereof | |
| CN108659424A (en) | A kind of water dissolving type prilling process of modified polyvinylalcohol | |
| CN108276781A (en) | A kind of production technology of plastics capable of being fast degraded | |
| CN108003553B (en) | A kind of processing method of high-strength impact-resistant type wood-plastic composite panel | |
| CN104987590A (en) | Environment-friendly recyclable foamed polypropylene and macromolecule absorbent composite material and preparation method thereof | |
| CN109651723A (en) | A kind of anti-acid glass 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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200414 |