CN116178862B - High-strength PVC composite material and preparation method and application thereof - Google Patents
High-strength PVC composite material and preparation method and application thereof Download PDFInfo
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- CN116178862B CN116178862B CN202310240849.5A CN202310240849A CN116178862B CN 116178862 B CN116178862 B CN 116178862B CN 202310240849 A CN202310240849 A CN 202310240849A CN 116178862 B CN116178862 B CN 116178862B
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- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims abstract description 36
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 15
- 229920000728 polyester Polymers 0.000 claims abstract description 15
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 12
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 12
- 239000008116 calcium stearate Substances 0.000 claims abstract description 12
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 12
- MLXDKRSDUJLNAB-UHFFFAOYSA-N triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F MLXDKRSDUJLNAB-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 16
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 10
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 8
- 239000007795 chemical reaction product Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000004898 kneading Methods 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000002834 transmittance Methods 0.000 abstract description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 239000003999 initiator Substances 0.000 abstract description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 2
- 238000004132 cross linking Methods 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 2
- 238000005502 peroxidation Methods 0.000 abstract description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 49
- 229920000915 polyvinyl chloride Polymers 0.000 description 49
- 238000012360 testing method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 206010051246 Photodermatosis Diseases 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000008845 photoaging Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
-
- 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
-
- 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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The application discloses a high-strength PVC composite material and a preparation method and application thereof, wherein maleic anhydride is used for grafting PE modified PVC resin, so that the interfacial compatibility and cohesiveness between the PVC resin and modified calcium carbonate whisker and polyester are increased, the mechanical strength, toughness and shock resistance of the composite material are improved, and meanwhile, the modified PVC resin and polyester form intermolecular crosslinking through the effect of a peroxidation initiator, so that the mechanical property of the composite material is further enhanced; meanwhile, the perfluoro octyl ethyl triethoxy silane contains fluorine atoms with strong polarity, can react with calcium ions in calcium stearate to generate high-hardness calcium fluoride crystals, and can act together with calcium carbonate whiskers to further improve the shock resistance of the composite material; in addition, the calcium fluoride can also improve the heat resistance of the composite material, reduce the decomposition of the composite material, further improve the light resistance of the composite material and delay the decrease of the light transmittance.
Description
Technical Field
The application relates to the technical field of high polymer materials, in particular to a high-strength PVC composite material, a preparation method and application thereof.
Background
At present, for the purposes of good appearance texture and light weight, an aluminum alloy is often adopted as a material for manufacturing the shell of the tablet personal computer, however, because the strength of the aluminum alloy is low, the shell is easy to bend when being stressed greatly in the using process of the tablet personal computer made of the aluminum alloy, so that the tablet personal computer is damaged.
In the prior art, the material of protective housing is mostly leather, silica gel, cloth, hard plastic, soft plastics, fine hair system, silk system, and the protective housing of this kind of material exists not wear-resisting, not scratch resistant, life weak point, moreover, the protective housing of this kind of material can not avoid the panel computer to take place the condition emergence of buckling when the atress is great.
Polyvinyl chloride, PVC for short, is thermoplastic resin formed by polymerizing vinyl chloride under the action of an initiator, and is a homopolymer of vinyl chloride; PVC is white powder with an amorphous structure, has smaller branching degree, is stable to organic and inorganic acid, alkali and salt, has the characteristics of flame resistance, acid and alkali resistance, microorganism resistance and wear resistance, but the PVC resin product has poor impact resistance and poor toughness, belongs to brittle materials, and greatly limits the application of the PVC resin in a tablet computer protective shell.
Disclosure of Invention
Aiming at the defects of the prior art, the application aims to provide a high-strength PVC composite material, a preparation method and application thereof, and the prepared composite material has higher tensile strength, impact resistance and illumination resistance.
In order to achieve the above purpose, the present application adopts the following technical scheme:
a preparation method of a high-strength PVC composite material comprises the following steps:
(1) Mixing PVC resin, zinc stearate and maleic anhydride grafted PE in an internal mixer, mixing, and crushing in a crusher to obtain modified PVC resin;
(2) Adding calcium carbonate whisker into ethanol water solution, uniformly dispersing by ultrasonic, then adding perfluorooctyl ethyl triethoxysilane into the solution, heating and stirring the solution for reaction, and centrifuging, washing and drying the reaction product after the reaction is completed to obtain modified calcium carbonate whisker;
(3) And (3) carrying out melt blending on the modified PVC resin, the modified calcium carbonate whisker, the polyester, the calcium stearate, the dibenzoyl peroxide and the antioxidant 1608, and then extruding, cooling and granulating to obtain the high-strength PVC composite material.
Preferably, in the step (1), the mass ratio of the PVC resin to the zinc stearate to the maleic anhydride grafted PE is 40-60:4-10:15-25.
Preferably, in the step (1), the mixing temperature is 210-240 ℃ and the mixing time is 5-10min.
Preferably, in the step (2), the mass ratio of the calcium carbonate whisker, the ethanol aqueous solution and the perfluorooctyl ethyl triethoxysilane is 4-6:200-250:1-2.
Preferably, in the step (2), the mass ratio of ethanol to water in the ethanol aqueous solution is 2-3:1.
Preferably, in the step (2), the reaction temperature is 60-80 ℃ and the reaction time is 4-6h.
Preferably, in the step (3), the mass ratio of the modified PVC resin, the modified calcium carbonate whisker, the polyester, the calcium stearate, the dibenzoyl peroxide and the antioxidant 1608 is 60-100:10-25:20-35:3-6:0.5-1:2-4.
Preferably, in step (3), the melt blending temperature is 180-210 ℃.
The application provides the high-strength PVC composite material prepared by the preparation method.
The application also provides application of the high-strength PVC composite material in a flat protection shell.
Compared with the prior art, the application has the following beneficial effects:
(1) The application utilizes maleic anhydride to graft PE modified PVC resin, increases the interfacial compatibility and cohesiveness between the PVC resin and modified calcium carbonate whisker and polyester, thereby improving the mechanical strength, toughness and shock resistance of the composite material, and simultaneously, the modified PVC resin and polyester form intermolecular crosslinking through the effect of peroxidation initiator, thereby further enhancing the mechanical property of the composite material.
(2) According to the application, the perfluoro octyl ethyl triethoxysilane is used for modifying the calcium carbonate whisker, so that the compatibility of the calcium carbonate whisker in the resin is further increased, and the mechanical property of the composite material is improved; meanwhile, the perfluoro octyl ethyl triethoxy silane contains fluorine atoms with strong polarity, can react with calcium ions in calcium stearate to generate high-hardness calcium fluoride crystals, and can act together with calcium carbonate whiskers to further improve the shock resistance of the composite material; in addition, the calcium fluoride can also improve the heat resistance of the composite material, reduce the decomposition of the composite material, further improve the light resistance of the composite material and delay the decrease of the light transmittance.
Detailed Description
The present application will be described in further detail with reference to the following preferred examples, but the present application is not limited to the following examples.
Unless otherwise specified, the chemical reagents involved in the present application are all commercially available.
The PVC resin in the document of the application is purchased from Jinan Xiang Feng Wei industry Co., ltd., CAS:9002-86-2;
maleic anhydride grafted PE was purchased from Dongguan taurus plastic raw materials Co., ltd., brand: 41E755;
calcium carbonate whiskers were purchased from hebei saina nano materials technologies limited;
the polyester is a thermoplastic polyester elastomer, and is purchased from Yuyao Zhengyuanplastic industry Co., ltd., brand: TH3028.
Example 1
A preparation method of a high-strength PVC composite material comprises the following steps:
(1) Mixing 40g of PVC resin, 4g of zinc stearate and 15g of maleic anhydride grafted PE in an internal mixer, mixing at 210 ℃ for 10min, and crushing in a crusher to obtain modified PVC resin;
(2) Adding 4g of calcium carbonate whisker into 200g of ethanol water solution (the mass ratio of ethanol to water is 2:1), uniformly dispersing by ultrasonic, then adding 1g of perfluorooctyl ethyl triethoxysilane into the solution, heating and stirring the solution at 60 ℃ for reaction for 6 hours, and centrifuging, washing and drying a reaction product after the reaction is completed to obtain the modified calcium carbonate whisker;
(3) And (3) carrying out melt blending on 60g of modified PVC resin, 10g of modified calcium carbonate whisker, 20g of polyester, 3g of calcium stearate, 0.5g of dibenzoyl peroxide and 2g of antioxidant 1608, wherein the melt blending temperature is 180 ℃, and then extruding, cooling and granulating to obtain the high-strength PVC composite material.
Example 2
A preparation method of a high-strength PVC composite material comprises the following steps:
(1) Mixing 60g of PVC resin, 10g of zinc stearate and 25g of maleic anhydride grafted PE in an internal mixer, mixing at 240 ℃ for 5min, and crushing in a crusher to obtain modified PVC resin;
(2) Adding 6g of calcium carbonate whisker into 250g of ethanol water solution (the mass ratio of ethanol to water is 3:1), uniformly dispersing by ultrasonic, then adding 2g of perfluorooctyl ethyl triethoxysilane into the solution, heating and stirring the solution at 80 ℃ for reaction for 4 hours, and centrifuging, washing and drying a reaction product after the reaction is completed to obtain the modified calcium carbonate whisker;
(3) 100g of modified PVC resin, 20g of modified calcium carbonate whisker, 35g of polyester, 6g of calcium stearate, 1g of dibenzoyl peroxide and 3g of antioxidant 1608 are subjected to melt blending, the melt blending temperature is 210 ℃, and then the high-strength PVC composite material is obtained through extrusion, cooling and granulating.
Example 3
A preparation method of a high-strength PVC composite material comprises the following steps:
(1) Mixing 45g of PVC resin, 6g of zinc stearate and 20g of maleic anhydride grafted PE in an internal mixer, mixing for 10min at 220 ℃, and then crushing in a crusher to obtain modified PVC resin;
(2) Adding 5g of calcium carbonate whisker into 240g of ethanol water solution (the mass ratio of ethanol to water is 3:1), uniformly dispersing by ultrasonic, then adding 1.5g of perfluorooctyl ethyl triethoxysilane into the solution, heating and stirring the solution at 70 ℃ for reaction for 5 hours, and centrifuging, washing and drying a reaction product after the reaction is completed to obtain the modified calcium carbonate whisker;
(3) 80g of modified PVC resin, 25g of modified calcium carbonate whisker, 30g of polyester, 4g of calcium stearate, 0.8g of dibenzoyl peroxide and 2g of antioxidant 1608 are subjected to melt blending, the melt blending temperature is 180 ℃, and then the high-strength PVC composite material is obtained through extrusion, cooling and granulating.
Example 4
A preparation method of a high-strength PVC composite material comprises the following steps:
(1) 50g of PVC resin, 8g of zinc stearate and 16g of maleic anhydride grafted PE are mixed in an internal mixer, mixed for 8min at 220 ℃, and then crushed in a crusher to obtain modified PVC resin;
(2) Adding 5g of calcium carbonate whisker into 210g of ethanol water solution (the mass ratio of ethanol to water is 2:1), uniformly dispersing by ultrasonic, then adding 1.6g of perfluorooctyl ethyl triethoxysilane into the solution, heating and stirring the solution at 60 ℃ for reaction for 5 hours, and centrifuging, washing and drying a reaction product after the reaction is completed to obtain the modified calcium carbonate whisker;
(3) 75g of modified PVC resin, 18g of modified calcium carbonate whisker, 25g of polyester, 5g of calcium stearate, 0.8g of dibenzoyl peroxide and 3g of antioxidant 1608 are subjected to melt blending, the melt blending temperature is 200 ℃, and then the high-strength PVC composite material is obtained through extrusion, cooling and granulating.
Comparative example 1
A preparation method of a high-strength PVC composite material comprises the following steps:
80g of PVC resin, 25g of calcium carbonate whisker, 30g of polyester, 4g of calcium stearate, 0.8g of dibenzoyl peroxide and 2g of antioxidant 1608 are subjected to melt blending, the melt blending temperature is 180 ℃, and then the high-strength PVC composite material is obtained through extrusion, cooling and granulating.
Comparative example 2
A preparation method of a high-strength PVC composite material comprises the following steps:
(1) Mixing 45g of PVC resin, 6g of zinc stearate and 20g of maleic anhydride grafted PE in an internal mixer, mixing for 10min at 220 ℃, and then crushing in a crusher to obtain modified PVC resin;
(2) Adding 5g of calcium carbonate whisker into 240g of ethanol water solution (the mass ratio of ethanol to water is 3:1), uniformly dispersing by ultrasonic, then adding 1.5g of silane coupling agent KH550 into the solution, heating and stirring the solution at 70 ℃ for reaction for 5 hours, and centrifuging, washing and drying a reaction product after the reaction is completed to obtain the modified calcium carbonate whisker;
(3) 80g of modified PVC resin, 25g of modified calcium carbonate whisker, 30g of polyester, 4g of calcium stearate, 0.8g of dibenzoyl peroxide and 2g of antioxidant 1608 are subjected to melt blending, the melt blending temperature is 180 ℃, and then the high-strength PVC composite material is obtained through extrusion, cooling and granulating.
The composites prepared in examples 1-4 and comparative examples 1-2 were subjected to performance testing as follows:
impact resistance test: testing according to standard GB/T1043.2-2018, testing for 3 times in parallel, and taking an average value of the results;
tensile property test: testing according to standard GB/T1040.2-2022, testing for 3 times in parallel, and taking an average value of the results;
light transmittance test: the composite materials prepared in examples 1 to 4 and comparative examples 1 to 2 were prepared into discs having a radius of 50mm and a thickness of 1.5mm, and the light transmittance of the materials was measured according to the test method in GB/T2410-2008, and then, with reference to the test method in GB/T16422.2-2022, the discs were placed in a xenon lamp exposure photo-aging test chamber and irradiated for 30d, and the light transmittance of the materials was again measured, and the test results are shown in the following table:
finally, it should be noted that: the above examples are not intended to limit the present application in any way. Modifications and improvements will readily occur to those skilled in the art upon the basis of the present application. Accordingly, any modification or improvement made without departing from the spirit of the application is within the scope of the application as claimed.
Claims (7)
1. The preparation method of the high-strength PVC composite material is characterized by comprising the following steps of:
(1) Mixing PVC resin, zinc stearate and maleic anhydride grafted PE in an internal mixer, mixing, and crushing in a crusher to obtain modified PVC resin;
(2) Adding calcium carbonate whisker into ethanol water solution, uniformly dispersing by ultrasonic, then adding perfluorooctyl ethyl triethoxysilane into the solution, heating and stirring the solution for reaction, and centrifuging, washing and drying the reaction product after the reaction is completed to obtain modified calcium carbonate whisker;
(3) Melting and blending modified PVC resin, modified calcium carbonate whisker, polyester, calcium stearate, dibenzoyl peroxide and an antioxidant 1608, extruding, cooling and granulating to obtain a high-strength PVC composite material;
wherein in the step (1), the mass ratio of the PVC resin to the zinc stearate to the maleic anhydride grafted PE is 40-60:4-10:15-25;
in the step (2), the mass ratio of the calcium carbonate whisker, the ethanol aqueous solution and the perfluorooctyl ethyl triethoxysilane is 4-6:200-250:1-2;
in the step (3), the mass ratio of the modified PVC resin to the modified calcium carbonate whisker to the polyester to the calcium stearate to the dibenzoyl peroxide to the antioxidant 1608 is 60-100:10-25:20-35:3-6:0.5-1:2-4.
2. The method for producing a high-strength PVC composite according to claim 1, wherein in the step (1), the kneading temperature is 210 to 240℃and the kneading time is 5 to 10 minutes.
3. The method for producing a high-strength PVC composite according to claim 1, wherein in the step (2), the mass ratio of ethanol to water in the aqueous ethanol solution is 2-3:1.
4. The method for preparing a high-strength PVC composite according to claim 1, wherein in the step (2), the heating and stirring reaction temperature is 60-80 ℃, and the heating and stirring reaction time is 4-6 hours.
5. The method of producing a high strength PVC composite according to claim 1, wherein in step (3), the melt blending temperature is 180 to 210 ℃.
6. The high-strength PVC composite material prepared by the preparation method according to any one of claims 1 to 5.
7. Use of the high strength PVC composite according to claim 6 in a protective flat panel.
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| CN114456515A (en) * | 2021-12-31 | 2022-05-10 | 安徽科居新材料科技有限公司 | PVC (polyvinyl chloride) wood-plastic composite material with high impact resistance and preparation method thereof |
| CN115678072A (en) * | 2023-01-04 | 2023-02-03 | 兰州金土地塑料制品有限公司 | Biodegradable mulching film and preparation method thereof |
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