CN116694055A - Flame-retardant PC composite material and preparation method thereof - Google Patents
Flame-retardant PC composite material and preparation method thereof Download PDFInfo
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- 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 title claims abstract description 72
- 239000003063 flame retardant Substances 0.000 title claims abstract description 72
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 31
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 25
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 21
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 21
- 239000012745 toughening agent Substances 0.000 claims abstract description 21
- 238000010008 shearing Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 33
- 229920001577 copolymer Polymers 0.000 claims description 10
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229920005680 ethylene-methyl methacrylate copolymer Polymers 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 claims description 5
- 239000004599 antimicrobial Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 239000004417 polycarbonate Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 229940126062 Compound A Drugs 0.000 abstract description 3
- 229920000515 polycarbonate Polymers 0.000 abstract description 3
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 abstract 1
- 229920005668 polycarbonate resin Polymers 0.000 description 37
- 239000004431 polycarbonate resin Substances 0.000 description 37
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 4
- HWXBQOWZWWYBLY-UHFFFAOYSA-N C1(=CC=CC=C1)S(=O)(=O)OS(=O)(=O)C=1C=CC=CC1.[K] Chemical compound C1(=CC=CC=C1)S(=O)(=O)OS(=O)(=O)C=1C=CC=CC1.[K] HWXBQOWZWWYBLY-UHFFFAOYSA-N 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- LVTHXRLARFLXNR-UHFFFAOYSA-M potassium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate Chemical group [K+].[O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LVTHXRLARFLXNR-UHFFFAOYSA-M 0.000 description 3
- XZJUCCSDEMXAQU-UHFFFAOYSA-N sodium;1,2,4-trichlorobenzene Chemical compound [Na].ClC1=CC=C(Cl)C(Cl)=C1 XZJUCCSDEMXAQU-UHFFFAOYSA-N 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012543 microbiological analysis Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002904 solvent 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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- 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
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- 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 application relates to the field of flame retardance and antibacterial property of polycarbonate materials, in particular to a flame-retardant PC composite material and a preparation method thereof. The flame-retardant PC composite material comprises the following raw materials in parts by weight: 96-98 parts of PC, 0.2-0.4 part of antioxidant, 0.4-0.8 part of anti-dripping agent, 0.6-1.6 part of flame retardant and 0.8-1.2 parts of toughening agent, wherein the flame retardant comprises the following components by weight percent: 2-5 parts of compound A comprising 0.5-0.8 part of antibacterial agent, and the preparation method is realized by extruding, shearing and granulating through a double-screw extruder. The flame-retardant PC composite material has excellent flame-retardant effect and excellent antibacterial property.
Description
Technical Field
The application relates to the field of flame retardance and antibacterial property of polycarbonate materials, in particular to a flame-retardant PC composite material and a preparation method thereof.
Background
The polycarbonate resin (PC) is engineering plastic with excellent comprehensive performance, is one of the universal engineering plastics with the fastest growing speed in recent years, and has the advantages of excellent impact toughness, dimensional stability, electrical insulation, weather resistance, no toxicity and the like. Based on the excellent properties of PC materials, the PC material is widely applied to various fields such as household appliances, automobiles, office equipment, bathroom products, medical care and the like. In the production of PC materials for household appliances, other auxiliary materials such as glass fibers, light shielding agents, insulating agents and the like are often required to be added, so that various performance index requirements required in actual production are met.
Polycarbonate PC is a high molecular polymer with carbonate groups in molecular chains, is amorphous transparent engineering plastic, has the advantages of high strength and modulus, high toughness, low shrinkage and the like, and is flame-retardant B-grade and stable in size; however, the melt viscosity is high, the fluidity is poor, the processing and forming are difficult, the solvent resistance is poor, and the like, so that the application range is limited. Particularly on furniture and bathroom products, the problems of flame retardance, no antibacterial property and the like of PC materials are to be solved.
Disclosure of Invention
The application provides a flame-retardant PC composite material and a preparation method thereof, aiming at solving the problems of flame retardance, no antibacterial property and the like of PC materials.
The following technical scheme is adopted:
the flame-retardant PC composite material is prepared from the following raw materials in parts by weight: 96-98 parts of PC, 0.2-0.4 part of antioxidant, 0.4-0.8 part of anti-dripping agent, 0.6-1.6 part of flame retardant and 0.8-1.2 parts of toughening agent, wherein the flame retardant comprises the following components by weight percent: 2-5.
By adopting the technical scheme, when the addition amount of the carefully selected flame retardant-compound A is too small or too large as 1.8 parts, the flame retardant grade is poor and is V-2, and the flame retardant effect is poor. When the addition amount of the flame retardant is 0.6-1.6 parts, the flame retardant grade is V-1, V-0, and the flame retardant has higher flame retardant effect.
Preferably, the antioxidant is a compound B consisting of 3-aminopropyl triethoxysilane and n-stearyl propionate according to the weight percentage of 1-5:2.
Preferably, the anti-dripping agent is a compound C consisting of polytetrafluoroethylene and styrene-acrylonitrile copolymer in a weight percentage of 2-7:1.
Preferably, the toughening agent is ethylene-methyl methacrylate copolymer, ethylene-methyl methacrylate-glycidyl methacrylate copolymer and ethylene-butyl acrylate-glycidyl methacrylate copolymer, and the weight percentage of the ethylene-methyl methacrylate copolymer to the ethylene-methyl methacrylate copolymer is 1:2-5: 4-7.
Preferably, 0.5-0.8 parts of antibacterial agent is also included. The antibacterial agent is a nano soluble glass silver-zinc antibacterial agent, the silver weight percentage content is 0.2%, the zinc weight percentage content is 1%, and the diameter distribution of the nano soluble glass silver-zinc antibacterial agent is 80-120 nanometers.
By adopting the technical scheme, the selected nano soluble glass silver-loaded zinc antibacterial agent has excellent antibacterial effect in PC composite materials, and the antibacterial rate of staphylococcus aureus is more than 99.9%.
The preparation method of the flame-retardant PC composite material comprises the following steps:
s1, uniformly mixing PC, an antioxidant, an anti-dripping agent, a flame retardant and a toughening agent according to mass percent to form a mixture;
s2, adding the components weighed in the step S1 into a high-speed mixer for 20-40 minutes, then adding the mixed materials into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
The preparation method of the flame-retardant PC composite material further comprises the following steps:
s1, uniformly mixing an antioxidant, an anti-dripping agent, a flame retardant, a toughening agent and an antibacterial agent according to mass percent, and mixing for 30-50 min by a mixer with the rotating speed of 800-1200 rpm to obtain an antibacterial mixture;
s2, mixing PP and the antibacterial mixture according to mass percentage, adding the mixture into a high-speed mixer, and mixing for 20-40 minutes until the mixture is obtained;
s3, adding the mixture into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the precise control of the proportion regulation and the addition amount of the flame retardant-compound A, the flame retardant PC composite material has the flame retardant grade of more than V-1 and the highest V-0, and has higher flame retardant effect.
2. Through the antibacterial test of the flame-retardant PC composite material, the antibacterial rate of staphylococcus aureus is more than 99.9%, and the flame-retardant PC composite material has excellent antibacterial performance.
Detailed Description
Embodiments of the present application will be described in detail below with reference to examples, preparations, but it will be understood by those skilled in the art that the following examples are only for illustrating the present application and should not be construed as limiting the scope of the present application. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
The flame-retardant PC composite material comprises the following raw materials in parts by weight: 96 parts of PC, 0.4 part of antioxidant, 0.8 part of anti-dripping agent, 1.6 parts of flame retardant and 1.2 parts of toughening agent. Wherein the flame retardant is potassium perfluorobutyl sulfonate, potassium benzenesulfonyl benzenesulfonate and 2,4, 5-trichlorobenzene sodium sulfonate, and the weight percentage is 9:1:2, wherein the antioxidant is a compound B consisting of 3-aminopropyl triethoxysilane and n-stearyl propionate in a weight percentage of 1:2, the anti-dripping agent is a compound C consisting of polytetrafluoroethylene and styrene-acrylonitrile copolymer in a weight percentage of 2:1, and the toughening agent is ethylene-methyl methacrylate copolymer, ethylene-methyl methacrylate-glycidyl methacrylate copolymer and ethylene-butyl acrylate-glycidyl methacrylate copolymer in a weight percentage of 1:2:4, and a compound D composed of the same.
Example 2
The flame-retardant PC composite material comprises the following raw materials in parts by weight: 98 parts of PC, 0.2 part of antioxidant, 0.4 part of anti-dripping agent, 0.6 part of flame retardant and 0.8 part of toughening agent. Wherein the flame retardant is potassium perfluorobutyl sulfonate, potassium benzenesulfonyl benzenesulfonate and 2,4, 5-trichlorobenzene sodium sulfonate, and the weight percentage is 9:6:5, wherein the antioxidant is a compound B consisting of 3-aminopropyl triethoxysilane and n-stearyl propionate in a weight percentage of 5:2, the anti-dripping agent is a compound C consisting of polytetrafluoroethylene and styrene-acrylonitrile copolymer in a weight percentage of 7:1, and the toughening agent is ethylene-methyl methacrylate copolymer, ethylene-methyl methacrylate-glycidyl methacrylate copolymer and ethylene-butyl acrylate-glycidyl methacrylate copolymer in a weight percentage of 1:5:7, and a compound D composed of the same.
Example 3
The flame-retardant PC composite material comprises the following raw materials in parts by weight: 97 parts of PC, 0.3 part of antioxidant, 0.7 part of anti-dripping agent, 1 part of flame retardant and 1 part of toughening agent. Wherein the flame retardant is potassium perfluorobutyl sulfonate, potassium benzenesulfonyl benzenesulfonate and 2,4, 5-trichlorobenzene sodium sulfonate, and the weight percentage is 9:4:3, wherein the antioxidant is a compound B consisting of 3-aminopropyl triethoxysilane and n-stearyl propionate in a weight percentage of 3:2, the anti-dripping agent is a compound C consisting of polytetrafluoroethylene and styrene-acrylonitrile copolymer in a weight percentage of 5:1, and the toughening agent is ethylene-methyl methacrylate copolymer, ethylene-methyl methacrylate-glycidyl methacrylate copolymer and ethylene-butyl acrylate-glycidyl methacrylate copolymer in a weight percentage of 1:3:5, and a compound D composed of the same.
Example 4
The same as in example 3, except that: the addition also included 0.5 parts of an antimicrobial agent. The antibacterial agent is nano soluble glass silver-zinc antibacterial agent, the silver weight percentage content is 0.2%, the zinc weight percentage content is 1%, and the diameter of the nano soluble glass silver-zinc antibacterial agent is 80-120 nanometers.
Example 5
The same as in example 3, except that: the addition also included 0.8 parts of an antimicrobial agent. The antibacterial agent is nano soluble glass silver-zinc antibacterial agent, the silver weight percentage content is 0.2%, the zinc weight percentage content is 1%, and the diameter of the nano soluble glass silver-zinc antibacterial agent is 80-120 nanometers.
Example 6
The same as in example 3, except that: the addition also comprises 0.7 part of antibacterial agent, wherein the antibacterial agent is nano soluble glass silver-zinc antibacterial agent, the silver weight percentage content is 0.2%, the zinc weight percentage content is 1%, and the diameter of the nano soluble glass silver-zinc antibacterial agent is 80-120 nanometers.
Comparative example 1
The same as in example 3, except that: the flame retardant was 0.4 part.
Comparative example 2
The same as in example 3, except that: the flame retardant was 1.8 parts.
Preparation example 1
The preparation method of the flame-retardant PC composite material comprises the following steps:
the material of example 1: 96kg of PC, 0.4kg of antioxidant, 0.8kg of anti-dripping agent, 1.6kg of flame retardant and 1.2kg of toughening agent are uniformly mixed to form a mixture;
adding the mixture into a high-speed mixer for 20 minutes, adding the mixed material into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
Preparation example 2
The preparation method of the flame-retardant PC composite material comprises the following steps:
the material of example 2: 98 parts of PC, 0.2 part of antioxidant, 0.4 part of anti-dripping agent, 0.6 part of flame retardant and 0.8 part of toughening agent to form a mixture;
adding the mixture into a high-speed mixer for 40 minutes, adding the mixed material into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
Preparation example 3
The preparation method of the flame-retardant PC composite material comprises the following steps:
the material of example 3: 97 parts of PC, 0.3 part of antioxidant, 0.7 part of anti-dripping agent, 1 part of flame retardant and 1 part of toughening agent to form a mixture;
adding the mixture into a high-speed mixer for 30 minutes, adding the mixed material into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
Preparation example 4
The preparation method of the flame-retardant PC composite material further comprises the following steps:
uniformly mixing the materials in the example 4 according to the mass percentage, namely, an antioxidant, an anti-dripping agent, a flame retardant, a toughening agent and an antibacterial agent, and mixing for 50 minutes by a mixer with the rotating speed of 800rpm to obtain an antibacterial mixture;
s2, mixing PP and the antibacterial mixture according to mass percentage, adding the mixture into a high-speed mixer, and mixing for 20 minutes until the mixture is obtained;
s3, adding the mixture into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
Preparation example 5
The preparation method of the flame-retardant PC composite material further comprises the following steps:
uniformly mixing the materials in the example 5 according to the mass percentage, namely, an antioxidant, an anti-dripping agent, a flame retardant, a toughening agent and an antibacterial agent, and mixing for 30 minutes by a mixer with the rotating speed of 1200rpm to obtain an antibacterial mixture;
mixing PP and the antibacterial mixture according to the mass percentage, adding the mixture into a high-speed mixer, and mixing for 40 minutes until the mixture is obtained; adding the mixture into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
Preparation example 6
The preparation method of the flame-retardant PC composite material further comprises the following steps:
uniformly mixing the materials in the example 6 according to the mass percentage, namely, an antioxidant, an anti-dripping agent, a flame retardant, a toughening agent and an antibacterial agent, and mixing for 30 minutes by a mixer with the rotating speed of 1000rpm to obtain an antibacterial mixture;
mixing PP and the antibacterial mixture according to the mass percentage, adding the mixture into a high-speed mixer, and mixing for 30 minutes until the mixture is obtained; adding the mixture into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
Preparation example 7
The same as in preparation example 3, except that the material in comparative example 1 was used.
Preparation example 8
The same as in preparation example 3, except that the material in comparative example 2 was used.
Performance test
The PC flame retardant composite materials in preparation examples 1 to 8 were sampled respectively, and the test data thereof are shown in Table 1.
Melt index: the test was performed according to ASTM D1238-04.
Tensile strength: testing was performed according to ASTM/D638.
Flexural strength: the test was performed according to ASTM/D790.
Notched Izod impact Strength: ASTM/D256.
Flame retardant rating: the test was performed in accordance with UL94 HB.
TABLE 1
From comparative analysis of flame retardant grades of preparation example 3 and preparation examples 7 and 8, the flame retardant was added in an amount of 0.4 part too little or 1.8 parts too much, and the flame retardant grade was deteriorated, and the flame retardant effect was not good.
Antibacterial test
The PC flame retardant composite materials of preparation examples 4 to 6 and comparative preparation example 4 were sampled, and injection molded into a sheet material, and the sheet material was sent to a microbiological analysis inspection center in Guangdong province for antibacterial test according to JIS Z2801:2000 standard, and the test results were corresponding to tables 2,3,4, and 5.
TABLE 2
TABLE 3 Table 3
TABLE 4 Table 4
TABLE 5
As can be seen from tables 2,3 and 4, the antibacterial ratio of Staphylococcus aureus of the flame retardant composite materials of preparation examples 4,5 and 6 is more than 99.9%. Has excellent antibacterial effect.
While the above examples have been presented for the purpose of illustrating the principles of the application and are not intended to be limiting, it will be understood by those skilled in the art that various changes may be made and equivalents substituted for elements thereof without departing from the spirit and scope of the application, and it is intended to cover the appended claims.
Claims (8)
1. The flame-retardant PC composite material is characterized by comprising the following raw materials in parts by weight: 96-98 parts of PC, 0.2-0.4 part of antioxidant, 0.4-0.8 part of anti-dripping agent, 0.6-1.6 part of flame retardant and 0.8-1.2 parts of toughening agent, wherein the flame retardant comprises the following components by weight percent: 2-5.
2. The flame-retardant PC composite material according to claim 1, wherein the antioxidant is a compound B consisting of n-stearyl propionate and 1-5:2 weight percent.
3. A flame retardant PC composite according to claim 1, wherein the anti-drip agent is a compound C consisting of polytetrafluoroethylene and styrene-acrylonitrile copolymer in a weight percentage of 2-7:1.
4. The flame retardant PC composite of claim 1, wherein the toughening agent is an ethylene-methyl methacrylate copolymer, an ethylene-methyl methacrylate-glycidyl methacrylate copolymer, and an ethylene-butyl acrylate-glycidyl methacrylate copolymer in a weight percentage of 1:2-5: 4-7.
5. The flame retardant PC composite of claim 1 further comprising 0.5-0.8 parts of an antimicrobial agent.
6. The flame-retardant PC composite material according to claim 5, wherein the antibacterial agent is a nano-soluble glass silver-zinc antibacterial agent, the silver weight percentage content is 0.2%, the zinc weight percentage content is 1%, and the nano-soluble glass silver-zinc antibacterial agent has a diameter distribution of 80-120 nanometers.
7. A method of preparing a flame retardant PC composite according to any one of claims 1-4, comprising the steps of:
s1, uniformly mixing PC, an antioxidant, an anti-dripping agent, a flame retardant, a toughening agent and an antibacterial agent according to mass percent to form a mixture;
s2, adding the components weighed in the step S1 into a high-speed mixer for 20-40 minutes, then adding the mixed materials into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
8. A method of preparing a flame retardant PC composite according to any one of claims 5-6, comprising the steps of:
s1, uniformly mixing an antioxidant, an anti-dripping agent, a flame retardant, a toughening agent and an antibacterial agent according to mass percent, and mixing for 30-50 min by a mixer with the rotating speed of 800-1200 rpm to obtain an antibacterial mixture;
s2, mixing PP and the antibacterial mixture according to mass percentage, adding the mixture into a high-speed mixer, and mixing for 20-40 minutes until the mixture is obtained;
s3, adding the mixture into a hopper of a double-screw extruder, extruding, shearing and granulating by the double-screw extruder, wherein the diameter of the screw is 60mm, and the length-diameter ratio of the screw is 38:1, the temperature of each zone of the screw is as follows: first zone 165-175 ℃, second zone 180-200 ℃, third zone 205-215 ℃, fourth zone 220-245 ℃, fifth zone 250-260 ℃, sixth zone 265-272 ℃.
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| CN117447828A (en) * | 2023-11-24 | 2024-01-26 | 东莞市国亨塑胶科技有限公司 | Light PC-ABS flame-retardant composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117447828A (en) * | 2023-11-24 | 2024-01-26 | 东莞市国亨塑胶科技有限公司 | Light PC-ABS flame-retardant composite material and preparation method thereof |
| CN117447828B (en) * | 2023-11-24 | 2024-05-24 | 东莞市国亨塑胶科技有限公司 | Light PC-ABS flame-retardant composite material and preparation method thereof |
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