CN112225973B - Insect-proof packaging material and preparation method thereof - Google Patents
Insect-proof packaging material and preparation method thereof Download PDFInfo
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- CN112225973B CN112225973B CN202011092476.4A CN202011092476A CN112225973B CN 112225973 B CN112225973 B CN 112225973B CN 202011092476 A CN202011092476 A CN 202011092476A CN 112225973 B CN112225973 B CN 112225973B
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- 239000005022 packaging material Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title description 5
- 239000004793 Polystyrene Substances 0.000 claims abstract description 27
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 27
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 26
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 239000004005 microsphere Substances 0.000 claims abstract description 22
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 20
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 20
- 229920002223 polystyrene Polymers 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 229920001400 block copolymer Polymers 0.000 claims abstract description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004698 Polyethylene Substances 0.000 claims abstract description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 13
- 230000002195 synergetic effect Effects 0.000 claims abstract description 13
- 239000005892 Deltamethrin Substances 0.000 claims abstract description 11
- 229960002483 decamethrin Drugs 0.000 claims abstract description 11
- OWZREIFADZCYQD-NSHGMRRFSA-N deltamethrin Chemical compound CC1(C)[C@@H](C=C(Br)Br)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 OWZREIFADZCYQD-NSHGMRRFSA-N 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 9
- -1 zinc oxide compound Chemical class 0.000 claims abstract description 9
- 238000011065 in-situ storage Methods 0.000 claims abstract description 6
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 5
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 3
- 239000004332 silver Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 17
- 238000010096 film blowing Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000003999 initiator Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 229920006280 packaging film Polymers 0.000 claims 1
- 239000012785 packaging film Substances 0.000 claims 1
- 241000238631 Hexapoda Species 0.000 abstract description 11
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 abstract 1
- 238000004659 sterilization and disinfection Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 description 7
- 239000004594 Masterbatch (MB) Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 6
- 230000003179 granulation Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 239000000077 insect repellent Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001177117 Lasioderma serricorne Species 0.000 description 1
- 101100505672 Podospora anserina grisea gene Proteins 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 235000011844 whole wheat flour Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F112/00—Homopolymers 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 an aromatic carbocyclic ring
- C08F112/02—Monomers containing only one unsaturated aliphatic radical
- C08F112/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F112/06—Hydrocarbons
- C08F112/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use 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 an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
-
- 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
-
- 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
- C08K3/08—Metals
- C08K2003/0806—Silver
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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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/156—Heterocyclic compounds having oxygen in the ring having two oxygen atoms in the ring
- C08K5/1565—Five-membered rings
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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
- C08K5/16—Nitrogen-containing compounds
- C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Wrappers (AREA)
Abstract
The invention discloses an insect-proof packaging material, which is characterized in that: the insect-proof packaging material comprises the following raw materials in percentage by weight: 30 to 50 percent of polystyrene compound, 30 to 70 percent of high-density polyethylene, 5 to 10 percent of light calcium carbonate, 0.5 to 2 percent of PE wax, 0.5 to 1 percent of nano-silver composite microsphere, 0.5 to 1 percent of synergistic ether and 2 to 5 percent of styrene-ethylene-butadiene block copolymer (SEBS); the polystyrene compound is a PS/deltamethrin/nano zinc oxide compound obtained by in-situ polymerization; the nano-silver composite microspheres are composite microspheres with nano-silver particles loaded on the surface of sulfonated polystyrene, the loading capacity of the nano-silver composite microspheres contains 5% of silver, and the nano-silver composite microspheres have insect prevention and insect resistance effects, good sterilization effects and good mechanical properties.
Description
Technical Field
The invention belongs to the technical field of grain storage, and particularly relates to an insect-proof packaging material and a preparation method thereof.
Background
People take food as day and take food as first. The food safety is still a very important problem in the modern society, however, the food loss caused by insect pests is as high as 36-48 billion Yuan every year! The development of high-efficiency insect-proof materials, the improvement of storage facilities and the provision of technical support are still necessary conditions for realizing the safe storage of grains. The problem to be solved urgently is to find a packaging material which is nontoxic to human and has high efficiency of preventing insects and expelling parasites. Chinese patent CN105028515A, a method for preparing insect-proof packing bag, which is prepared by mixing natural materials with insect-proof effect, wrapping with cloth bag, and placing into grain storage bag to achieve the purpose of insect-proof and insect-proof, but can not be directly made into grain storage bag; chinese patent CN108001828B is an insect-resistant and insect-proof packing bag and a preparation method thereof, and natural materials with insect-repellent effect are used for soaking packing materials such as non-woven fabrics to be used as outer packing, but the insect-repellent effect is poor.
Disclosure of Invention
The invention aims to provide an insect-resistant packaging material with better effect and a preparation method thereof aiming at the problems in the prior art.
The purpose of the invention is realized by the following technical scheme:
the insect-proof packaging material comprises polystyrene compound, high-density polyethylene, light calcium carbonate, PE wax, nano-silver composite microspheres, synergistic ether and styrene-ethylene-butadiene block copolymer (SEBS), wherein the weight percentage of each raw material is as follows: 30 to 50 percent of polystyrene compound, 30 to 70 percent of high-density polyethylene, 5 to 10 percent of light calcium carbonate, 0.5 to 2 percent of PE wax, 0.5 to 1 percent of nano-silver composite microsphere, 0.5 to 1 percent of synergistic ether and 2 to 5 percent of styrene-ethylene-butadiene block copolymer (SEBS); the polystyrene compound is a PS/deltamethrin/nano zinc oxide compound obtained by in-situ polymerization; the nano-silver composite microspheres are composite microspheres with nano-silver particles loaded on the surface of sulfonated polystyrene, and the loaded amount of the nano-silver composite microspheres contains 5% of silver.
The manufacturing method of the insect-proof packaging material comprises the following specific steps:
a, preparing a polystyrene compound, namely PS/deltamethrin/nano zinc oxide compound small balls (0.2-2 mm) by taking purified styrene as a monomer, 10% polyvinyl formal as a dispersant and BPO as an initiator in an in-situ polymerization manner, wherein the PS/deltamethrin/nano zinc oxide compound small balls are 96/0.5/3.5;
b, adding a polystyrene compound, high-density polyethylene, light calcium carbonate, PE wax, nano-silver composite microspheres, synergistic ether and a styrene-ethylene-butadiene block copolymer (SEBS) into a high-energy mixer, uniformly mixing, extruding, granulating and drying by using a double-screw extruder to obtain master batches, mixing the master batches with the high-density polyethylene according to a ratio of 1:5, and blowing the mixture by a film blowing machine to prepare the packaging bag.
The invention has the following beneficial effects:
1. the PS/deltamethrin/nano zinc oxide compound is prepared by adopting an in-situ polymerization method, so that the powdered deltamethrin and nano zinc oxide can be uniformly dispersed in polystyrene, and the problems of agglomeration and dispersion in subsequent granulation are solved;
2. the styrene-ethylene-butadiene block copolymer serving as a phase solvent is added, so that the problems of phase separation, unstable phase structure, poor interface bonding force and the like of a polymer blend system are solved, and the mechanical property of the material is reduced. The prepared composite polystyrene/high-pressure polyethylene has better mechanical property and meets the requirements of the packaging industry;
3. the deltamethrin/nano zinc oxide is added to play roles of insect prevention, insect resistance and bacteria resistance;
4. the insecticidal effect is improved by adding the synergistic ether;
5. the composite microspheres loaded with nano-silver particles on the surface of the sulfonated polystyrene are added, so that the problem of dispersion of nano-silver is solved, and the antibacterial effect of the packaging material is greatly improved;
6. the addition of the light calcium carbonate greatly reduces the production cost.
Detailed Description
The invention is further described below with reference to examples:
example 1:
a. mixing polystyrene compound, high-density polyethylene, light calcium carbonate, PE wax, nano-silver composite microspheres, synergistic ether and styrene-ethylene-butadiene block copolymer (SEBS) in a high-energy mixer for 1h, and fully mixing uniformly; the raw materials comprise, by weight, 30% of a polystyrene compound, 53% of high-density polyethylene, 8% of light calcium carbonate, 2% of PE wax, 0.5% of nano-silver composite microspheres, 2% of synergistic ether and 5% of styrene-ethylene-butadiene block copolymer (SEBS), and the raw materials are extruded by a double-screw extruder to be granulated (granulation parameters are shown in table 1) and dried to form the master batch.
b. Mixing the master batch and high-density polyethylene HDPE according to the weight ratio of 1:5, mixing uniformly in a mixer, and blowing the film by using a film blowing machine to prepare the packaging bag (the parameters of the film blowing machine are shown in table 2).
TABLE 1 twin-screw extruder extrusion parameters
TABLE 2 inflation film manufacturing machine parameter settings
Example 2
Mixing polystyrene compound, high-density polyethylene, light calcium carbonate, PE wax, nano-silver composite microspheres, synergistic ether and styrene-ethylene-butadiene block copolymer (SEBS) in a high-energy mixer for 1h, and fully mixing uniformly; the raw materials comprise, by weight, 40% of polystyrene composite, 48% of high-density polyethylene, 5% of light calcium carbonate, 2% of PE wax, 1% of nano-silver composite microspheres, 1% of synergistic ether and 3% of styrene-ethylene-butadiene block copolymer (SEBS), and the raw materials are extruded by a double-screw extruder for granulation (the granulation parameters are shown in table 1) and dried to form the master batch.
Mixing the master batch and high-density polyethylene HDPE according to the weight ratio of 1:5, mixing uniformly in a mixer, and blowing the film by using a film blowing machine to prepare the packaging bag (the parameters of the film blowing machine are shown in table 2).
Example 3
Mixing a polystyrene compound, high-density polyethylene, light calcium carbonate, PE wax, nano-silver, synergistic ether and a styrene-ethylene-butadiene block copolymer (SEBS) in a high-energy mixer for 1h, and fully mixing uniformly; the raw materials are as follows by weight percent: 50% of polystyrene compound, 35% of high-density polyethylene, 5% of light calcium carbonate, 2% of PE wax, 1% of nano-silver composite microspheres, 2% of synergistic ether and 5% of styrene-ethylene-butadiene block copolymer (SEBS) are extruded by a double-screw extruder for granulation (the granulation parameters are shown in Table 1) and dried to form the master batch.
Mixing the master batch and high density polyethylene HDPE according to the proportion of 1:5, mixing uniformly in a mixer, and blowing the film by using a film blowing machine to prepare the packaging bag (the parameters of the film blowing machine are shown in table 2).
Insect resistance test of packaging material
The films of example 1, example 2 and example 3 were made into 10X 6cm packaging bags, each bag was filled with 20g of whole wheat flour, sealed with a thermoplastic machine, placed into a clean disposable meal box (720 ml), inoculated with 20 larvae of Tripsalliotae grisea and tobacco beetle, sealed, and cultured at 28 + -2 deg.C and 75 + -5% of temperature and humidity. And after 30d, opening the packaging bag to observe the boring condition of the test insects on different materials. The unsealed package was used as a control. Each treatment was repeated 3 times.
TABLE 3 insect control Effect test results
Claims (2)
1. An insect-proof packaging material is characterized in that: the insect-proof packaging material comprises the following raw materials in percentage by weight: 30-50% of polystyrene compound, 30-70% of high-density polyethylene, 5-10% of light calcium carbonate, 0.5-2% of PE wax, 0.5-1% of nano-silver composite microspheres, 0.5-1% of synergistic ether and 2-5% of styrene-ethylene-butadiene block copolymer SEBS; the polystyrene compound is a polystyrene/deltamethrin/nano zinc oxide compound obtained by in-situ polymerization; the nano-silver composite microspheres are composite microspheres with nano-silver particles loaded on the surface of sulfonated polystyrene, and the loaded amount of the nano-silver composite microspheres contains 5% of silver;
the PS/deltamethrin/nano zinc oxide compound is prepared by the following method: preparing PS/deltamethrin/nano zinc oxide compound spheres by taking purified styrene as a monomer, 10% polyvinyl formal as a dispersant and BPO as an initiator in an in-situ polymerization manner, wherein the particle size is 0.2-2mm, and the ratio of PS/deltamethrin/nano zinc oxide is 96/0.5/3.5;
the sum of the weight percentages of the raw materials is 100 percent.
2. The insect-proof packaging material according to claim 1, which is obtained by processing: uniformly mixing weighed polystyrene compound, high-density polyethylene, light calcium carbonate, PE wax, nano-silver composite microspheres, synergistic ether and styrene-ethylene-butadiene block copolymer SEBS (styrene-ethylene-butadiene block copolymer) by using a high-energy mixer, extruding, granulating and drying by using a double-screw extruder to obtain master batches, mixing the master batches with the high-density polyethylene according to a ratio of 1:5, and blowing the mixture by a film blowing machine to prepare the insect-proof packaging film.
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| CN103044795A (en) * | 2012-12-17 | 2013-04-17 | 上海普利特复合材料股份有限公司 | Antibacterial transparent polystyrene material and preparation method thereof |
| CN104151471A (en) * | 2014-07-03 | 2014-11-19 | 安徽大学 | Nano-silver/polystyrene hollow composite microspheres and preparation method thereof |
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| CN108070141A (en) * | 2016-11-14 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | A kind of antibiotic plastic and its preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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