CN111793318A - Plastic storage cabinet and preparation method thereof - Google Patents
Plastic storage cabinet and preparation method thereof Download PDFInfo
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- CN111793318A CN111793318A CN202010764269.2A CN202010764269A CN111793318A CN 111793318 A CN111793318 A CN 111793318A CN 202010764269 A CN202010764269 A CN 202010764269A CN 111793318 A CN111793318 A CN 111793318A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 70
- 239000004033 plastic Substances 0.000 title claims abstract description 70
- 238000003860 storage Methods 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 31
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000003607 modifier Substances 0.000 claims abstract description 24
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 239000012745 toughening agent Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 35
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 34
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 32
- 241000392443 Pleurotus citrinopileatus Species 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 239000011787 zinc oxide Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- 229920000962 poly(amidoamine) Polymers 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 12
- 230000014759 maintenance of location Effects 0.000 claims description 11
- 230000004224 protection Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000003208 petroleum Substances 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 239000012065 filter cake Substances 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- XIOUDVJTOYVRTB-UHFFFAOYSA-N 1-(1-adamantyl)-3-aminothiourea Chemical compound C1C(C2)CC3CC2CC1(NC(=S)NN)C3 XIOUDVJTOYVRTB-UHFFFAOYSA-N 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 238000000502 dialysis Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- -1 zinc octoate hexahydrate Chemical class 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 17
- 230000032683 aging Effects 0.000 abstract description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003063 flame retardant Substances 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 239000002985 plastic film Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a plastic storage cabinet which is processed by plastic plates, wherein the plastic plates are prepared from the following raw materials in parts by weight: 60-70 parts of ABS resin, 5-10 parts of toughening agent, 0.5-1 part of antioxidant, 1-2 parts of lubricant, 1-2 parts of antibacterial agent, 6-8 parts of aluminum silicate fiber and 0.5-1 part of modifier. The invention also provides a preparation method of the plastic storage cabinet. The plastic storage cabinet provided by the invention has strong antibacterial, light aging resistance and flame retardant property.
Description
Technical Field
The invention relates to a plastic storage cabinet and a preparation method thereof.
Background
The storage cabinet is generally divided into a household storage cabinet, a business storage cabinet and the like, and is mainly used for facilitating the use of people and storing different articles according to categories. The storage cabinet is more necessary for families or dormitories with small space, can make full use of the space to accommodate more living goods, and can well decorate the home environment of people. The storage cabinet can be widely applied to storage management of various types of small parts, samples, molds, tools, electronic components, file data, design drawings, bills, catalogs, forms and the like in offices, government offices, factories and the like. The plates used for manufacturing the storage cabinet generally comprise plastics, solid wood, metal and the like, wherein the plastic plates have the advantages of light weight, convenience in processing, corrosion resistance, space saving and the like, so that the market share of the plastic storage cabinet tends to increase year by year.
Chinese patent application CN201110082249.8 discloses an improved modified ABS material and a laboratory basic equipment plastic storage cabinet made of the material, wherein the improved modified ABS material mainly comprises the following components in parts by weight: 40-55 parts of ABS, 10-15 parts of flame retardant, 15-20 parts of glass fiber and 20-25 parts of polycarbonate. The invention has the problems of poor antibacterial, light aging resistance and flame retardant property.
Disclosure of Invention
The invention aims to provide a plastic storage cabinet which has strong antibacterial, light aging resistance and flame retardant properties.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the plastic storage cabinet is formed by processing plastic plates, and the plastic plates are prepared from the following raw materials in parts by weight: 60-70 parts of ABS resin, 5-10 parts of toughening agent, 0.5-1 part of antioxidant, 1-2 parts of lubricant, 1-2 parts of antibacterial agent, 6-8 parts of aluminum silicate fiber and 0.5-1 part of modifier.
Further, the toughening agent is MBS.
Further, the antioxidant of the present invention is antioxidant 264.
Further, the lubricant of the present invention is zinc stearate.
Further, the antibacterial agent of the present invention is prepared by the following steps:
A1. drying Pleurotus citrinopileatus fruiting body at 80 deg.C for 24 hr, pulverizing, sieving with 60 mesh sieve to obtain Pleurotus citrinopileatus powder, adding Pleurotus citrinopileatus powder into ethanol water solution, soaking and extracting for 24 hr to obtain extractive solution, and concentrating under reduced pressure to obtain extract;
A2. adding the extract obtained in the step A1 into distilled water, adding petroleum ether after completely dissolving, shaking for 30 minutes, standing for 30 minutes to obtain an extract, and concentrating the extract under reduced pressure to obtain the pleurotus citrinopileatus extract for later use;
A3. adding zinc nitrate hexahydrate into an ethanol water solution, stirring for 15 minutes, adding urea, continuously stirring for 30 minutes, transferring into a high-pressure reaction kettle, placing the high-pressure reaction kettle into an oven at 180 ℃, cooling to room temperature after 24 hours, taking out, performing centrifugal separation, washing with ethanol to obtain a white precipitate, drying the white precipitate at 80 ℃ for 12 hours, transferring into a muffle furnace at 600 ℃ for calcining for 3 hours, cooling to room temperature along with the furnace, and taking out to obtain porous nano zinc oxide for later use;
A4. and D, adding the pleurotus citrinopileatus extract obtained in the step A2 into deionized water, stirring until the pleurotus citrinopileatus extract is uniformly mixed, adding the porous nano zinc oxide obtained in the step A3, carrying out ultrasonic oscillation for 1 hour to obtain a mixed solution, filtering the mixed solution to obtain a filter cake, washing the filter cake with the deionized water, and drying at 80 ℃ for 24 hours to obtain the antibacterial agent.
Furthermore, in the step A1, the volume fraction of the ethanol aqueous solution is 90%, and the ratio of the pleurotus citrinopileatus powder to the ethanol aqueous solution is 1:35 g/mL; in the step A2, the proportion of the extract, the distilled water and the petroleum ether is 1g to 10mL to 5 mL; in the step A3, the volume fraction of the ethanol aqueous solution is 50%, and the proportion of the zinc octoate hexahydrate, the ethanol aqueous solution and the urea is 2g to 50mL to 1 g; in the step A4, the proportion of the pleurotus citrinopileatus extract, the deionized water and the porous nano zinc oxide is 1.5g to 100mL to 2 g.
Further, the modifier is prepared by the following steps:
adding 1.5 generation PAMAM into THF, stirring for 1 hour under the protection of nitrogen to obtain PAMAM solution, adding POSS into THF, stirring for 1 hour under the protection of nitrogen to obtain POSS solution, mixing PAMAM solution with POSS solution, stirring for 24 hours under the protection of nitrogen to obtain reaction solution, dialyzing the reaction solution with dialysis bag, and drying at 80 ℃ for 12 hours to obtain the modifier.
Furthermore, in the preparation step of the modifier, the concentration of the PAMAM solution is 4mmoL/mL, the concentration of the POSS solution is 8mmoL/mL, and the volume ratio of the PAMAM solution to the POSS solution is 1: 1.
The invention also provides a preparation method of the plastic storage cabinet.
In order to solve the technical problems, the technical scheme is as follows:
a preparation method of a plastic storage cabinet comprises the following steps:
B1. weighing the raw materials in parts by weight, and baking the ABS resin for 1-2 hours at 100 ℃ for later use;
B2. adding the ABS resin baked in the step B1 and other raw materials into a high-speed mixer, and blending for 20-30 minutes to obtain a mixture;
B3. adding the mixture obtained in the step B2 into a double-screw extruder, and performing melt extrusion and granulation to obtain granules;
B4. and D, baking the granules obtained in the step B3 at 120 ℃ for 1-2 hours to prepare a plastic plate, and cutting and splicing the plastic plate according to a drawing to obtain the plastic storage cabinet.
Further, in the step B3, the length-diameter ratio of the double-screw extruder is 36-40, the extrusion temperature is 170-225 ℃, the screw rotation speed is 200-400 rpm, and the retention time is 2-3 minutes.
Compared with the prior art, the invention has the following beneficial effects:
1) the pleurotus citrinopileatus extract is prepared by extracting pleurotus citrinopileatus with ethanol and then extracting with petroleum ether, has good antibacterial activity, but has poor heat resistance and cannot be directly added into ABS, therefore, the invention also prepares the porous nano zinc oxide, and mixes the pleurotus citrinopileatus extract with the porous nano zinc oxide, the pleurotus citrinopileatus extract is absorbed in the pore canal of the porous nano zinc oxide to form the antibacterial agent, the porous nano zinc oxide with better heat resistance can play a better thermal protection role on the pleurotus citrinopileatus extract, in addition, the porous nano zinc oxide has stronger ultraviolet absorption capacity, and can generate better sterilization capacity after being irradiated by ultraviolet rays, therefore, the antibacterial agent prepared by the invention has stronger antibacterial performance and ultraviolet resistance, and can effectively improve the antibacterial performance and the light aging resistance of the plastic storage cabinet.
2) The compatibility between the antibacterial agent and the ABS resin is poor, the bonding strength between the antibacterial agent and the ABS resin is reduced, and the performance of the antibacterial agent cannot be fully exerted, so that the PAMAM and the POSS are reacted to prepare the modifier, the compatibility between the antibacterial agent and the ABS resin can be effectively improved in the processing process, the bonding strength between the antibacterial agent and the ABS resin is improved, and the antibacterial performance and the light aging resistance of the plastic locker are further improved.
3) The plastic storage cabinet also uses the aluminum silicate fiber which has stronger fire resistance and high temperature resistance and can form stronger combination with ABS resin with the help of the modifier, thereby effectively improving the flame retardant property and the heat resistance of the plastic storage cabinet.
Detailed Description
The present invention will be described in detail with reference to specific embodiments, and the exemplary embodiments and descriptions thereof herein are provided to explain the present invention but not to limit the present invention.
Example 1
The plastic storage cabinet is processed by plastic plates, and the plastic plates are prepared from the following raw materials in parts by weight: 65 parts of ABS resin, 8 parts of MBS, 2640.5 parts of antioxidant, 1.5 parts of zinc stearate, 1.5 parts of antibacterial agent, 7 parts of aluminum silicate fiber and 0.8 part of modifier.
Wherein, the antibacterial agent is prepared by the following steps:
A1. drying pleurotus citrinopileatus sporocarp at 80 ℃ for 24 hours, crushing, sieving by a 60-mesh sieve to obtain pleurotus citrinopileatus powder, adding the pleurotus citrinopileatus powder into an ethanol aqueous solution with the volume fraction of 90%, wherein the ratio of the pleurotus citrinopileatus powder to the ethanol aqueous solution is 1:35g/mL, soaking and extracting for 24 hours to obtain an extracting solution, and concentrating the extracting solution under reduced pressure to obtain an extract;
A2. adding the extract obtained in the step A1 into distilled water, adding petroleum ether after completely dissolving, wherein the proportion of the extract, the distilled water and the petroleum ether is 1g to 10mL to 5mL, shaking for 30 minutes, standing for 30 minutes to obtain an extract, and concentrating the extract under reduced pressure to obtain the pleurotus citrinopileatus extract for later use;
A3. adding zinc nitrate hexahydrate into 50% ethanol aqueous solution by volume fraction, stirring for 15 minutes, adding urea, wherein the proportion of zinc octoate hexahydrate, ethanol aqueous solution and urea is 2g:50mL:1g, continuously stirring for 30 minutes, transferring into a high-pressure reaction kettle, placing the high-pressure reaction kettle into an oven at 180 ℃, cooling to room temperature after 24 hours, taking out, performing centrifugal separation, washing with ethanol to obtain a white precipitate, drying the white precipitate at 80 ℃ for 12 hours, transferring into a muffle furnace at 600 ℃ for calcining for 3 hours, cooling to room temperature along with the furnace, and taking out to obtain porous nano zinc oxide for later use;
A4. adding the pleurotus citrinopileatus extract obtained in the step A2 into deionized water, stirring until the mixture is uniformly mixed, adding the porous nano zinc oxide obtained in the step A3, wherein the ratio of the pleurotus citrinopileatus extract to the deionized water to the porous nano zinc oxide is 1.5g to 100mL to 2g, carrying out ultrasonic oscillation for 1 hour to obtain a mixed solution, filtering the mixed solution to obtain a filter cake, washing the filter cake with the deionized water, and drying at 80 ℃ for 24 hours to obtain the antibacterial agent.
The modifier is prepared by the following steps:
adding 1.5 generation PAMAM into THF, stirring for 1 hour under the protection of nitrogen to obtain a PAMAM solution with the concentration of 4mmoL/mL, adding POSS into THF, stirring for 1 hour under the protection of nitrogen to obtain a POSS solution with the concentration of 8mmoL/mL, mixing the PAMAM solution and the POSS solution in a volume ratio of 1:1, stirring for 24 hours under the protection of nitrogen to obtain a reaction solution, dialyzing the reaction solution by using a dialysis bag, and drying at 80 ℃ for 12 hours to obtain the modifier.
The preparation method of this example includes the following steps:
B1. weighing the raw materials in parts by weight, and baking the ABS resin for 1.5 hours at 100 ℃ for later use;
B2. adding the ABS resin baked in the step B1 and other raw materials into a high-speed mixer, and blending for 25 minutes to obtain a mixture;
B3. adding the mixture obtained in the step B2 into a double-screw extruder, and performing melt extrusion and granulation to obtain granules, wherein the length-diameter ratio of the double-screw extruder is 36, the extrusion temperature is 170-225 ℃, the screw rotation speed is 300 revolutions per minute, and the retention time is 2.5 minutes;
B4. and D, baking the granules obtained in the step B3 at 120 ℃ for 1.5 hours to prepare a plastic plate, and cutting and splicing the plastic plate according to a drawing to obtain the plastic storage cabinet.
Example 2
The plastic storage cabinet is processed by plastic plates, and the plastic plates are prepared from the following raw materials in parts by weight: 60 parts of ABS resin, 10 parts of MBS, 2640.9 parts of antioxidant, 1.2 parts of zinc stearate, 1 part of antibacterial agent, 8 parts of aluminum silicate fiber and 0.9 part of modifier.
The procedure for preparing the antibacterial agent and the modifier was the same as in example 1.
The preparation method of this example includes the following steps:
B1. weighing the raw materials in parts by weight, and baking the ABS resin for 1 hour at 100 ℃ for later use;
B2. adding the ABS resin baked in the step B1 and other raw materials into a high-speed mixer, and blending for 30 minutes to obtain a mixture;
B3. adding the mixture obtained in the step B2 into a double-screw extruder, and performing melt extrusion and granulation to obtain granules, wherein the length-diameter ratio of the double-screw extruder is 40, the extrusion temperature is 170-225 ℃, the screw rotation speed is 200 revolutions per minute, and the retention time is 3 minutes;
B4. and D, baking the granules obtained in the step B3 at 120 ℃ for 1 hour to prepare a plastic plate, and cutting and splicing the plastic plate according to a drawing to obtain the plastic storage cabinet.
Example 3
The plastic storage cabinet is processed by plastic plates, and the plastic plates are prepared from the following raw materials in parts by weight: 70 parts of ABS resin, 5 parts of MBS, 2640.5 parts of antioxidant, 2 parts of zinc stearate, 1.8 parts of antibacterial agent, 7.5 parts of aluminum silicate fiber and 0.5 part of modifier.
The procedure for preparing the antibacterial agent and the modifier was the same as in example 1.
The preparation method of this example includes the following steps:
B1. weighing the raw materials in parts by weight, and baking the ABS resin for 2 hours at 100 ℃ for later use;
B2. adding the ABS resin baked in the step B1 and other raw materials into a high-speed mixer, and blending for 20 minutes to obtain a mixture;
B3. adding the mixture obtained in the step B2 into a double-screw extruder, and performing melt extrusion and granulation to obtain granules, wherein the length-diameter ratio of the double-screw extruder is 36, the extrusion temperature is 170-225 ℃, the screw rotation speed is 300 revolutions per minute, and the retention time is 2.5 minutes;
B4. and D, baking the granules obtained in the step B3 at 120 ℃ for 2 hours to prepare a plastic plate, and cutting and splicing the plastic plate according to a drawing to obtain the plastic storage cabinet.
Example 4
The plastic storage cabinet is processed by plastic plates, and the plastic plates are prepared from the following raw materials in parts by weight: 66 parts of ABS resin, 6 parts of MBS, 2641 parts of antioxidant, 1 part of zinc stearate, 2 parts of antibacterial agent, 6 parts of aluminum silicate fiber and 1 part of modifier.
The procedure for preparing the antibacterial agent and the modifier was the same as in example 1.
The preparation method of this example includes the following steps:
B1. weighing the raw materials in parts by weight, and baking the ABS resin for 1.5 hours at 100 ℃ for later use;
B2. adding the ABS resin baked in the step B1 and other raw materials into a high-speed mixer, and blending for 25 minutes to obtain a mixture;
B3. adding the mixture obtained in the step B2 into a double-screw extruder, and performing melt extrusion and granulation to obtain granules, wherein the length-diameter ratio of the double-screw extruder is 36, the extrusion temperature is 170-225 ℃, the screw rotation speed is 400 rpm, and the retention time is 2 minutes;
B4. and D, baking the granules obtained in the step B3 at 120 ℃ for 1.5 hours to prepare a plastic plate, and cutting and splicing the plastic plate according to a drawing to obtain the plastic storage cabinet.
Reference example 1: the difference from example 1 is that: the antibacterial agent in the plastic sheet material is porous nano zinc oxide, and the preparation steps of the antibacterial agent are omitted from steps A1, A2 and A4.
Reference example 2: the difference from example 1 is that: the antibacterial agent in the plastic sheet material is Pleurotus citrinopileatus extract, and the preparation steps A3 and A4 are omitted.
Reference example 3: the difference from example 1 is that: the raw materials of the plastic plate lack the modifier, and the weight portion of the ABS resin is changed to 65.8 portions.
Reference example 4: the difference from example 1 is that: the raw material of the plastic plate is lack of aluminum silicate fiber, and the weight part of the ABS resin is changed to 72 parts.
Comparative example: embodiment one of chinese patent application No. CN 201110082249.8.
The first test example: test of antibacterial Property
The antibacterial rates of the examples 1-4, the reference examples 1-4 and the comparative example are respectively tested by adopting a plate counting method, the tested strain is escherichia coli, the concentration of the bacterial solution is 104-. The test results are shown in table 1:
| antibacterial ratio (%) | |
| Example 1 | 92.6 |
| Example 2 | 90.8 |
| Example 3 | 91.2 |
| Example 4 | 91.7 |
| Reference example 1 | 78.5 |
| Reference example 2 | 61.9 |
| Reference example 3 | 82.4 |
| Reference example 4 | 92.5 |
| Comparative example | 19.3 |
TABLE 1
As can be seen from Table 1, the antibacterial rates of examples 1-4 of the present invention are all significantly higher than those of the comparative examples, indicating that the antibacterial properties of the present invention are stronger. The difference between part of raw materials of the reference examples 1-4 and the example 1 shows that the antibacterial rate of the reference example 1 is reduced a lot, which shows that the pleurotus citrinopileatus extract in the antibacterial agent can effectively improve the antibacterial performance of the plastic storage cabinet; the antibacterial rate of the reference example 2 is reduced most, which shows that the porous nano zinc oxide in the antibacterial agent can play a thermal protection role on the pleurotus citrinopileatus extract and also has antibacterial performance per se; the antibacterial ratio of reference example 3 was decreased least, indicating that the modifier is effective for improving the compatibility of the antibacterial agent with the ABS resin.
Test example two: light aging resistance test
Examples 1 to 4, reference examples 1 to 4 and comparative examples were subjected to ultraviolet accelerated aging tests using an ultraviolet lamp box (power of an ultraviolet lamp of 36W × 4, characteristic emission spectrum of 275nm, and time of 20 days) according to the GB/T16422.3-1997 standard, and notched impact strengths before and after aging of examples 1 to 4, reference examples 1 to 4 and comparative examples were tested to calculate notched impact strength retention rates, which are notched impact strength after aging/notched impact strength before aging × 100%, and a higher notched impact strength retention rate indicates a stronger light aging resistance. The test results are shown in table 2:
| notched impact Strength holding ratio (%) | |
| Example 1 | 96.5 |
| Example 2 | 96.3 |
| Example 3 | 96.1 |
| Example 4 | 96.4 |
| Reference example 1 | 96.5 |
| Reference example 2 | 75.8 |
| Reference example 3 | 90.2 |
| Reference example 4 | 96.4 |
| Comparative example | 71.0 |
TABLE 2
As can be seen from Table 2, the notched impact strength retention of examples 1 to 4 of the present invention was significantly higher than that of the comparative examples, indicating that the light aging resistance of the present invention was strong. The difference between part of raw materials of the reference examples 1-4 and the raw materials of the reference example 1 is that the notch impact strength retention rate of the reference example 2 is greatly reduced, which shows that the porous nano zinc oxide in the antibacterial agent can effectively improve the light aging resistance of the plastic storage cabinet; the notched impact strength retention of reference example 3 was somewhat reduced, indicating that the modifier is effective in improving the compatibility of the antibacterial agent with the ABS resin.
Test example three: test for flame retardancy
Reference ISO 4589: 1999 Standard test examples 1-4, reference examples 1-4, comparative examples, respectively, for Limiting Oxygen Index (LOI), higher LOI indicating stronger flame retardant performance. The test results are shown in table 3:
TABLE 3
As can be seen from Table 3, the LOI of examples 1-4 of the present invention are all significantly higher than the LOI of the comparative examples, indicating that the flame retardant properties of the present invention are stronger. The reference examples 1-4 are different from the example 1 in part of raw materials, and the LOI of the reference example 4 is reduced greatly, which shows that the aluminum silicate fiber can effectively improve the flame retardant property of the plastic storage cabinet; the LOI of reference example 3 is somewhat reduced, indicating that the modifier is effective in improving the compatibility of the aluminum silicate fiber with the ABS resin.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A plastics locker which characterized in that: the plastic storage cabinet is formed by processing plastic plates, and the plastic plates are prepared from the following raw materials in parts by weight: 60-70 parts of ABS resin, 5-10 parts of toughening agent, 0.5-1 part of antioxidant, 1-2 parts of lubricant, 1-2 parts of antibacterial agent, 6-8 parts of aluminum silicate fiber and 0.5-1 part of modifier.
2. The plastic storage cabinet as claimed in claim 1, wherein: the toughening agent is MBS.
3. The plastic storage cabinet as claimed in claim 1, wherein: the antioxidant is antioxidant 264.
4. The plastic storage cabinet as claimed in claim 1, wherein: the lubricant is zinc stearate.
5. The plastic storage cabinet as claimed in claim 1, wherein: the antibacterial agent is prepared by the following steps:
A1. drying Pleurotus citrinopileatus fruiting body at 80 deg.C for 24 hr, pulverizing, sieving with 60 mesh sieve to obtain Pleurotus citrinopileatus powder, adding Pleurotus citrinopileatus powder into ethanol water solution, soaking and extracting for 24 hr to obtain extractive solution, and concentrating under reduced pressure to obtain extract;
A2. adding the extract obtained in the step A1 into distilled water, adding petroleum ether after completely dissolving, shaking for 30 minutes, standing for 30 minutes to obtain an extract, and concentrating the extract under reduced pressure to obtain the pleurotus citrinopileatus extract for later use;
A3. adding zinc nitrate hexahydrate into an ethanol water solution, stirring for 15 minutes, adding urea, continuously stirring for 30 minutes, transferring into a high-pressure reaction kettle, placing the high-pressure reaction kettle into an oven at 180 ℃, cooling to room temperature after 24 hours, taking out, performing centrifugal separation, washing with ethanol to obtain a white precipitate, drying the white precipitate at 80 ℃ for 12 hours, transferring into a muffle furnace at 600 ℃ for calcining for 3 hours, cooling to room temperature along with the furnace, and taking out to obtain porous nano zinc oxide for later use;
A4. and D, adding the pleurotus citrinopileatus extract obtained in the step A2 into deionized water, stirring until the pleurotus citrinopileatus extract is uniformly mixed, adding the porous nano zinc oxide obtained in the step A3, carrying out ultrasonic oscillation for 1 hour to obtain a mixed solution, filtering the mixed solution to obtain a filter cake, washing the filter cake with the deionized water, and drying at 80 ℃ for 24 hours to obtain the antibacterial agent.
6. The plastic storage cabinet as claimed in claim 5, wherein: in the step A1, the volume fraction of the ethanol aqueous solution is 90%, and the ratio of the pleurotus citrinopileatus powder to the ethanol aqueous solution is 1:35 g/mL; in the step A2, the proportion of the extract, the distilled water and the petroleum ether is 1g to 10mL to 5 mL; in the step A3, the volume fraction of the ethanol aqueous solution is 50%, and the proportion of the zinc octoate hexahydrate, the ethanol aqueous solution and the urea is 2g to 50mL to 1 g; in the step A4, the proportion of the pleurotus citrinopileatus extract, the deionized water and the porous nano zinc oxide is 1.5g to 100mL to 2 g.
7. The plastic storage cabinet as claimed in claim 1, wherein: the modifier is prepared by the following steps:
adding 1.5 generation PAMAM into THF, stirring for 1 hour under the protection of nitrogen to obtain PAMAM solution, adding POSS into THF, stirring for 1 hour under the protection of nitrogen to obtain POSS solution, mixing PAMAM solution with POSS solution, stirring for 24 hours under the protection of nitrogen to obtain reaction solution, dialyzing the reaction solution with dialysis bag, and drying at 80 ℃ for 12 hours to obtain the modifier.
8. The plastic storage cabinet as claimed in claim 7, wherein: in the preparation step of the modifier, the concentration of the PAMAM solution is 4mmoL/mL, the concentration of the POSS solution is 8mmoL/mL, and the volume ratio of the PAMAM solution to the POSS solution is 1: 1.
9. The method for preparing a plastic storage cabinet as claimed in any one of claims 1 to 8, wherein the method comprises the following steps: the method comprises the following steps:
B1. weighing the raw materials in parts by weight, and baking the ABS resin for 1-2 hours at 100 ℃ for later use;
B2. adding the ABS resin baked in the step B1 and other raw materials into a high-speed mixer, and blending for 20-30 minutes to obtain a mixture;
B3. adding the mixture obtained in the step B2 into a double-screw extruder, and performing melt extrusion and granulation to obtain granules;
B4. and D, baking the granules obtained in the step B3 at 120 ℃ for 1-2 hours to prepare a plastic plate, and cutting and splicing the plastic plate according to a drawing to obtain the plastic storage cabinet.
10. The method for preparing a plastic storage cabinet as claimed in claim 9, wherein the method comprises the following steps: in the step B3, the length-diameter ratio of the double-screw extruder is 36-40, the extrusion temperature is 170-225 ℃, the screw rotating speed is 200-400 r/min, and the retention time is 2-3 minutes.
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