CN111440429B - PC/ABS alloy material and preparation method and application thereof - Google Patents

PC/ABS alloy material and preparation method and application thereof Download PDF

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Publication number
CN111440429B
CN111440429B CN202010284947.5A CN202010284947A CN111440429B CN 111440429 B CN111440429 B CN 111440429B CN 202010284947 A CN202010284947 A CN 202010284947A CN 111440429 B CN111440429 B CN 111440429B
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alloy material
abs
abs alloy
material according
calcium
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CN111440429A (en
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郭涛
黄险波
叶南飚
林荣涛
王琪
杨波
李文龙
王鹏
谢湘
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Liaoning Jinfa Technology Co ltd
Kingfa Science and Technology Co Ltd
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Liaoning Baolai New Material Co ltd
Kingfa Science and Technology Co Ltd
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Priority to PCT/CN2020/130125 priority patent/WO2021208434A1/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • C08K3/16—Halogen-containing compounds
    • C08K2003/164—Aluminum halide, e.g. aluminium 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention discloses a PC/ABS alloy material and a preparation method and application thereof, wherein the PC/ABS alloy material comprises the following components: 48-75 parts of PC resin; 25-40 parts of acrylonitrile-butadiene-styrene terpolymer ABS; 0-10 parts of methyl methacrylate-butadiene-styrene terpolymer MBS; wherein, based on the total weight of the PC/ABS alloy material, the weight content of the aluminum element is 1ppm to 100 ppm; the weight content of the calcium element is 1ppm to 150 ppm. The PC/ABS alloy material prepared by the invention has high fatigue resistance and high electroplating stripping force.

Description

PC/ABS alloy material and preparation method and application thereof
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a PC/ABS alloy material and a preparation method and application thereof.
Background
The PC/ABS alloy material has the excellent performances of both PC and ABS resins, and is widely applied to the electroplating field, such as automobiles, household appliances, bathrooms, buildings and the like. When it is applied to products that need to repeatedly withstand various stress actions, such as plated door handles of automobiles, fatigue resistance of the material is an important property that needs to be provided.
However, the fatigue resistance and the plating peel force of the plated PC/ABS alloy material are often contradictory, and it is often difficult to achieve a good plating peel force while requiring a material having a high fatigue resistance. At present, the fatigue resistance is generally improved by increasing the PC content, and the electroplating stripping force is improved by reducing the PC content and increasing the ABS content, and the contradiction between the two causes that the PC/ABS alloy with high fatigue resistance and high electroplating stripping force is difficult to obtain.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention mainly aims to provide a PC/ABS alloy material which has high fatigue resistance and high electroplating stripping force.
The invention also aims to provide a preparation method of the PC/ABS alloy material.
The invention is realized by the following technical scheme:
the PC/ABS alloy material is characterized by comprising the following components in parts by weight:
48-75 parts of PC resin;
25-40 parts of acrylonitrile-butadiene-styrene terpolymer ABS;
0 to 10 portions of methyl methacrylate-butadiene-styrene terpolymer MBS.
Wherein the weight content of the aluminum element is 1ppm to 100ppm, preferably 5ppm to 50ppm based on the total weight of the PC/ABS alloy material; (ii) a The content of calcium element is 1ppm to 150ppm by weight, preferably 20ppm to 80ppm by weight.
The method for testing the weight content of the aluminum element and the weight content of the calcium element comprises the following steps: 2g of particles of the alloy material are accurately weighed in an analytical balance, poured into a 100ml digestion bottle, then 5ml of 97% concentrated sulfuric acid is added, the mixture is heated in an iron plate heating instrument at a preset temperature of 300 ℃ for 10 minutes, then 5ml of 68% nitric acid is added, the heating is kept for 20 minutes, the particles are cooled to room temperature after being completely decomposed, 20ml of hydrogen peroxide is added to neutralize the acidity until the pH value is 7, the liquid is diluted by deionized water, and the liquid is introduced into an ICP detection instrument through a sample inlet pipe to measure the concentrations of aluminum and calcium.
Preferably, the aluminum element is derived from a compound of aluminum; the aluminum compound is one or more of aluminum oxide, aluminum hydroxide or aluminum chloride; the calcium compound is one or more of calcium oxide, calcium carbonate or calcium chloride.
The PC resin can be prepared by a phosgene method or an ester exchange method in the industry, and can also be obtained in a commercially available mode.
The PC resin is selected from one or two of PC resin with melt index MFI of 3g/10 min-15 g/10min at 300 ℃ and 1.2kg or PC resin with melt index MFI of 16g/10 min-30 g/10min at 300 ℃ and 1.2 kg. The PC resin with two melt indexes is compounded for use, so that the fatigue resistance of the PC/ABS alloy material can be better improved. Preferably a compound of PC resin with melt index MFI of 3g/10 min-15 g/10min at 300 ℃ and 1.2kg and PC resin with melt index MFI of 16g/10 min-30 g/10min at 300 ℃ and 1.2kg according to the weight ratio of 1: 1-3: 1.
The acrylonitrile-butadiene-styrene terpolymer ABS is obtained by emulsion polymerization. According to the invention, researches show that the rubber particle size of ABS has certain influence on the electroplating stripping force of the PC/ABS alloy material, and the compounded rubber particles with different particle size ranges are more beneficial to coarsening of the surface of the material before electroplating to form more uniform and compact rivet structures, so that a plating layer can be more firmly attached to the surface of the material. Preferably, the acrylonitrile-butadiene-styrene terpolymer ABS is selected from one or a mixture of two of ABS with the butadiene rubber particle size of 100-400 nm or ABS with the butadiene rubber particle size of 500-800 nm. More preferably a compound of ABS with the butadiene rubber grain diameter of 100-400 nm and ABS with the butadiene rubber grain diameter of 500-800 nm according to the weight ratio of 0.5: 1-2: 1.
According to the invention, researches show that the rubber particles in MBS can better promote coarsening, and the addition of MBS can improve the electroplating stripping force of the PC/ABS alloy material. The methyl methacrylate-butadiene-styrene terpolymer MBS is one or a mixture of two of MBS with rubber particle size of 100-300 nm or MBS with rubber particle size of 400-800 nm. Preferably, the rubber particle size is 100-300 nm, and the rubber particle size is 400-800 nm, wherein the rubber particle size is 0.5: 1-2: 1.
The PC/ABS alloy material further comprises 0-2 parts by weight of an auxiliary agent; the auxiliary agent comprises one or two of an antioxidant or a pigment; the antioxidant is selected from one or more of hindered amine antioxidant, hindered phenol antioxidant and phosphite antioxidant; such as one or more of 1010, 168, 1076, 445, 1098; the pigment is one or more of titanium dioxide, ultramarine and carbon black.
The invention also provides a preparation method of the PC/ABS alloy material, which comprises the following steps:
(1) weighing the components according to the proportion, mixing the components in a high-speed mixer for 1-5 min, and adding the mixture into a double-screw extruder at a first section after uniformly mixing;
(2) adding an aluminum compound and a calcium compound in a side feeding way of a double screw;
(3) and (3) performing melt extrusion, granulation and drying to obtain the PC/ABS alloy material.
Preferably, in the step (3), the melt extrusion conditions are as follows: the temperature of the first zone is 200-230 ℃, the temperature of the second zone is 210-240 ℃, the temperature of the third zone is 220-250 ℃, the temperature of the fourth zone is 220-250 ℃, the temperature of the fifth zone is 230-260 ℃, the temperature of the sixth zone is 230-260 ℃, the temperature of the seventh zone is 230-260 ℃, the temperature of the eighth zone is 230-260 ℃, and the rotating speed of the main engine is 300-500 revolutions per minute; the length-diameter ratio of the double-screw extruder is 32: 1-42: 1.
The invention also provides application of the PC/ABS alloy material in electroplating products, such as automobiles, household appliances, bathrooms, buildings and the like.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, researches show that the fatigue resistance of the alloy material can be obviously improved by adding the aluminum compound and the calcium compound with specific contents into the PC/ABS alloy material, controlling the weight content of the aluminum element to be 1 ppm-100 ppm and the weight content of the calcium element to be 1 ppm-150 ppm;
according to the invention, through the synergistic effect of the PC resin, the ABS and the MBS and the optimization of the PC resin, the ABS and the MBS, the PC/ABS alloy material can have high fatigue resistance and high electroplating stripping force at the same time.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
The raw materials used in the examples and comparative examples are now described below, but are not limited to these materials:
PC resin 1: MFI (300 ℃/1.2 kg): 8g/10 min;
PC resin 2: MFI (300 ℃/1.2 kg): 20g/10 min;
acrylonitrile-butadiene-styrene terpolymer ABS:
ABS 1: the particle size of the butadiene rubber is 100-400 nm;
ABS 2: the particle size of the butadiene rubber is 500-800 nm;
methylmethacrylate-butadiene-styrene terpolymer MBS:
MBS 1: the particle size of the rubber is 100-300 nm;
MBS 2: the particle size of the rubber is 400-800 nm;
compound of aluminum: aluminum oxide Al2O3Aluminum hydroxide Al (OH)3AlCl, aluminum chloride3Purchased in the market;
calcium compound: CaO and CaCl of calcium oxide2Calcium carbonate CaCO3Purchased in the market;
auxiliary agent: and (4) an antioxidant 1010.
Preparation of examples 1 to 15 and comparative examples 1 to 6:
(1) weighing the components according to the proportion in the table 1, mixing the components in a high-speed mixer for 3min, and adding the mixture into a double-screw extruder at a first section after the components are uniformly mixed;
(2) feeding an aluminum compound and a calcium compound in a third section of the double screw;
(3) and (3) performing melt extrusion, granulation and drying to obtain the PC/ABS alloy material.
Wherein the conditions of melt extrusion are as follows: the temperature of the first zone is 200-230 ℃, the temperature of the second zone is 210-240 ℃, the temperature of the third zone is 220-250 ℃, the temperature of the fourth zone is 220-250 ℃, the temperature of the fifth zone is 230-260 ℃, the temperature of the sixth zone is 230-260 ℃, the temperature of the seventh zone is 230-260 ℃, the temperature of the eighth zone is 230-260 ℃, and the rotating speed of the main engine is 300-500 revolutions per minute; the length-diameter ratio of the twin-screw extruder is 36: 1.
Each performance test method and condition:
the method for testing the weight content of the aluminum element and the calcium element comprises the following steps: accurately weighing 2g of particles of an alloy material in an analytical balance, pouring the particles into a 100ml digestion bottle, adding 5ml of 97% concentrated sulfuric acid, heating the particles in an iron plate heating instrument at a preset temperature of 300 ℃ for 10 minutes, then adding 5ml of 68% nitric acid, keeping heating for 20 minutes, cooling the particles to room temperature after completely decomposing the particles, adding 20ml of hydrogen peroxide to neutralize the particles until the pH value is 7, diluting the liquid with deionized water, and introducing the liquid into an ICP (inductively coupled plasma) detection instrument through a sample inlet pipe to measure the concentrations of aluminum and calcium;
electroplating stripping force: peel force test was performed on 10mm x 80mm electroplated square panels using an eleaceae ELK-500N type digital tensiometer, peel width 10mm, peel length 80mm, peel speed 0.5mm/sec, and average peel force was recorded in units: n/mm;
number of tensile fatigue fractures: performing by using a tensile fatigue instrument; after the tensile sample bar was fixed with a jig, the tensile load was kept constant at 30MPa and the frequency was 20Hz, and the number of times of occurrence of tensile fatigue fracture was recorded.
Table 1: the concrete proportions (by weight) and performance test results of the components in the examples and the comparative examples
Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8
PC resin 1 32 32 32 32 32 32 28 40
PC resin 2 30 30 30 30 30 30 20 30
ABS1 17 17 17 17 17 17 20 15
ABS2 14 14 14 14 14 14 20 15
MBS1 3 3 3 3 3 3 5 3
MBS2 3 3 3 3 3 3 5 2
Compound of aluminium Al2O3 Al(OH)3 Al2O3 Al2O3 Al(OH)3 AlCl3 AlCl3 Al(OH)3
Calcium compounds CaO CaO CaCl2 CaCO3 CaCO3 CaCO3 CaO CaCl2
Al element content/ppm 10.5 45.3 21.7 96.2 4.5 65.4 25.6 36.2
Ca element content/ppm 49.8 20.8 60.9 5.8 145.7 98.9 41.7 30.9
Auxiliary agent 2 2 2 2 2 2 2 2
Electroplating peel force N/mm 210 206 208 192 197 198 221 188
Number of tensile fatigue fractures 35612 34892 35078 31085 31175 31328 30046 37143
Continuing with Table 1:
example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15
PC resin 1 62 - 32 32 32 32 32
PC resin 2 - 62 30 30 30 30 30
ABS1 17 17 31 - 17 17 17
ABS2 14 14 - 31 14 14 14
MBS1 3 3 3 3 6 - -
MBS2 3 3 3 3 - 6 -
Compound of aluminium Al2O3 Al2O3 Al2O3 Al2O3 Al2O3 Al2O3 Al2O3
Calcium compounds CaO CaO CaO CaO CaO CaO CaO
Al element content/ppm 10.5 10.5 10.5 10.5 10.5 10.5 10.5
Ca element content/ppm 49.8 49.8 49.8 49.8 49.8 49.8 49.8
Auxiliary agent 2 2 2 2 2 2 2
Electroplating peel force N/mm 203 199 189 192 201 198 185
Number of tensile fatigue fractures 32124 31775 35053 35074 34129 34001 33587
Continuing with Table 1:
comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 Comparative example 5 Comparative example 6
PC resin 1 32 32 32 32 32 32
PC resin 2 30 30 30 30 30 30
ABS1 17 17 17 17 17 17
ABS2 14 14 14 14 14 14
MBS1 3 3 3 3 3 3
MBS2 3 3 3 3 3 3
Compound of aluminium - Al2O3 - Al2O3 Al2O3 Al2O3
Calcium compounds - - CaO CaO CaO CaO
Al element content/ppm - 10.5 - 359.8 10.5 267.5
Ca element content/ppm - - 49.8 49.8 298.5 345.8
Auxiliary agent 2 2 2 2 2 2
Electroplating peel force N/mm 171 175 179 182 180 185
Number of tensile fatigue fractures 27803 27996 28015 29531 29786 30052
As can be seen from the data of the examples and comparative examples 1 to 6, the fatigue resistance of the PC/ABS alloy material can be significantly improved by adding a certain amount of aluminum compound and calcium compound to the PC/ABS alloy material, and controlling the weight content of aluminum element to be 1ppm to 100ppm and the weight content of calcium element to be 1ppm to 150 ppm. In comparative examples 1-3, when the PC/ABS alloy material does not contain aluminum element and/or calcium element, the tensile fatigue fracture times of the material are obviously reduced; in comparative examples 4 to 6, when the content of aluminum and/or calcium in the PC/ABS alloy material is too high, the tensile fatigue fracture frequency of the alloy material is reduced.
As can be seen from the data of the embodiment 1 and the embodiments 9-10, the compounding of the two PC resins with the melt indexes is higher in the tensile fatigue fracture times of the material than that of the PC resin 1 or the PC resin 2 which is added independently, which indicates that the compounding of the two PC resins with the melt indexes is more beneficial to improving the fatigue resistance of the material.
As can be seen from the data of the embodiment 1 and the embodiments 11 to 12, when the ABS1 or the ABS2 is added independently, the plating peeling force of the material is lower than that of the ABS with two rubber particle sizes which is added simultaneously. The rubber particles compounded in different particle size ranges are more beneficial to coarsening the surface of the material before electroplating to form more uniform and compact rivet structures, so that the plating layer can be more firmly attached to the surface of the material.
As can be seen from the data of the example 1 and the examples 13 to 15, the electroplating stripping force of the material is obviously reduced without adding MBS, which shows that the rubber particles in MBS can better promote coarsening. The MBS with two rubber particle sizes is added simultaneously, and the electroplating stripping force of the material is higher than that when the MBS1 or MBS2 is added independently.

Claims (14)

1. The PC/ABS alloy material is characterized by comprising the following components in parts by weight:
48-75 parts of PC resin;
25-40 parts of acrylonitrile-butadiene-styrene terpolymer ABS;
0-10 parts of methyl methacrylate-butadiene-styrene terpolymer MBS;
wherein, based on the total weight of the PC/ABS alloy material, the weight content of the aluminum element is 1ppm to 100 ppm; the weight content of the calcium element is 1ppm to 150 ppm.
2. The PC/ABS alloy material according to claim 1, wherein the aluminum element is present in an amount of 5ppm to 50ppm by weight, based on the total weight of the PC/ABS alloy material; the weight content of the calcium element is 20ppm to 80 ppm.
3. The PC/ABS alloy material according to claim 1, wherein the weight content of the aluminum element and the weight content of the calcium element are measured by the following method: 2g of particles of the alloy material are accurately weighed in an analytical balance, poured into a 100ml digestion bottle, then 5ml of 97% concentrated sulfuric acid is added, the mixture is heated in an iron plate heating instrument at a preset temperature of 300 ℃ for 10 minutes, then 5ml of 68% nitric acid is added, the heating is kept for 20 minutes, the particles are cooled to room temperature after being completely decomposed, 20ml of hydrogen peroxide is added to neutralize the acidity until the pH value is 7, the liquid is diluted by deionized water, and the liquid is introduced into an ICP detection instrument through a sample inlet pipe to measure the concentrations of aluminum and calcium.
4. The PC/ABS alloy material according to claim 1, wherein the aluminum element is derived from a compound of aluminum; the calcium element is derived from a calcium compound; the aluminum compound is one or more of aluminum oxide, aluminum hydroxide or aluminum chloride; the calcium compound is one or more of calcium oxide, calcium carbonate or calcium chloride.
5. The PC/ABS alloy material according to claim 1, wherein the PC resin is selected from one or a mixture of two of a PC resin having a melt index MFI of 3g/10min to 15g/10min at 300 ℃ and 1.2kg, and a PC resin having a melt index MFI of 16g/10min to 30g/10min at 300 ℃ and 1.2 kg.
6. The PC/ABS alloy material according to claim 5, wherein the PC resin is selected from a compound of a PC resin with a melt index MFI of 3g/10 min-15 g/10min at 300 ℃ and 1.2kg and a PC resin with a melt index MFI of 16g/10 min-30 g/10min at 300 ℃ and 1.2kg in a weight ratio of 1: 1-3: 1.
7. The PC/ABS alloy material according to claim 1, wherein the acrylonitrile-butadiene-styrene terpolymer ABS is selected from one or a mixture of two of ABS with a butadiene rubber particle size of 100-400 nm and ABS with a butadiene rubber particle size of 500-800 nm.
8. The PC/ABS alloy material according to claim 7, wherein the acrylonitrile-butadiene-styrene terpolymer ABS is selected from a compound of ABS with a butadiene rubber particle size of 100-400 nm and ABS with a butadiene rubber particle size of 500-800 nm in a weight ratio of 0.5: 1-2: 1.
9. The PC/ABS alloy material according to claim 1, wherein the methylmethacrylate-butadiene-styrene terpolymer MBS is selected from one or a mixture of two of MBS with a rubber particle size of 100-300 nm and MBS with a rubber particle size of 400-800 nm.
10. The PC/ABS alloy material according to claim 9, wherein the methylmethacrylate-butadiene-styrene terpolymer MBS is selected from a compound of MBS with a rubber particle size of 100-300 nm and MBS with a rubber particle size of 400-800 nm in a weight ratio of 0.5: 1-2: 1.
11. The PC/ABS alloy material according to claim 1, further comprising 0 to 2 parts by weight of an auxiliary agent; the auxiliary agent comprises one or two of an antioxidant or a pigment; the antioxidant is selected from one or more of hindered amine antioxidant, hindered phenol antioxidant and phosphite antioxidant; the pigment is one or more of titanium dioxide, ultramarine or carbon black.
12. The preparation method of the PC/ABS alloy material according to any one of claims 1 to 11, characterized by comprising the following steps:
(1) weighing the components according to the proportion, mixing the components in a high-speed mixer for 1-5 min, and adding the mixture into a double-screw extruder at a first section after uniformly mixing;
(2) adding an aluminum compound and a calcium compound in a side feeding way of a double screw;
(3) and (3) performing melt extrusion, granulation and drying to obtain the PC/ABS alloy material.
13. The method for preparing a PC/ABS alloy material according to claim 12, wherein in the step (3), the melt extrusion conditions are as follows: the temperature of the first zone is 200-230 ℃, the temperature of the second zone is 210-240 ℃, the temperature of the third zone is 220-250 ℃, the temperature of the fourth zone is 220-250 ℃, the temperature of the fifth zone is 230-260 ℃, the temperature of the sixth zone is 230-260 ℃, the temperature of the seventh zone is 230-260 ℃, the temperature of the eighth zone is 230-260 ℃, and the rotating speed of the main engine is 300-500 revolutions per minute; the length-diameter ratio of the double-screw extruder is 32: 1-42: 1.
14. Use of the PC/ABS alloy material according to any one of claims 1 to 11 in electroplated articles.
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