CN110305442B - Metal texture and scratch-resistant PC/ABS composite material and preparation method thereof - Google Patents

Metal texture and scratch-resistant PC/ABS composite material and preparation method thereof Download PDF

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CN110305442B
CN110305442B CN201910586150.8A CN201910586150A CN110305442B CN 110305442 B CN110305442 B CN 110305442B CN 201910586150 A CN201910586150 A CN 201910586150A CN 110305442 B CN110305442 B CN 110305442B
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abs
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CN110305442A (en
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汪蓓蓓
周玲玲
吴越
谢小花
梁建军
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Anhui Jiayuan Renewable Resources Development And Utilization Co ltd
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Chuzhou Vocational and Technical College
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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
    • 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
    • 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
    • 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
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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 provides a metal texture and scratch-resistant PC/ABS composite material and a preparation method thereof, wherein 45-65 parts of PC resin, 35-55 parts of ABS resin, 5-10 parts of ASA, 5-10 parts of compatilizer, 10-15 parts of metal pigment, 0.1-0.5 part of antioxidant and 0.1-0.5 part of lubricant are added into a mixer to be uniformly mixed and then added into a double-screw extruder; and granulating after melt extrusion to prepare the scratch-resistant PC/ABS composite material with metal texture. The metal-texture scratch-resistant PC/ABS composite material is suitable for being applied to the fields of household appliances, automobiles and electronic appliances, and is a plastic part which has metal texture and does not need spraying.

Description

Metal texture and scratch-resistant PC/ABS composite material and preparation method thereof
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a scratch-resistant PC/ABS composite material with metal texture and a preparation method thereof.
Background
Along with social development, people have higher and higher requirements on beauty, and PC/ABS materials with metal texture are applied more and more widely. The traditional metal-texture PC/ABS material is realized by spraying a primer and then spraying a metal finish, the primer is a thermosetting material and is difficult to melt again, the recycling performance of a plastic product after paint spraying is poor, the reuse can be influenced, the spraying process is complicated and pollutes the environment, the rejection rate is high, toxic and harmful gas and dust are generated, the human body health is seriously harmed, and the problems of environmental pollution, energy waste and the like are caused.
The spraying-free plastic has been applied to products of household appliances, automobiles, 3C, daily use and building materials due to excellent appearance, economy and environmental protection, and has gained wide acceptance in the market. At present, the spraying-free plastic is mainly realized by directly adding metal powder, pearl powder and special pigment into the plastic, and the method has the defect that the flow lines in injection molding parts are obvious, thereby becoming the bottleneck that spraying-free materials are widely applied.
Disclosure of Invention
The invention provides a metal-texture scratch-resistant PC/ABS composite material and a preparation method thereof, aiming at the characteristics and the defects of the existing PC/ABS material.
A metal texture and scratch resistance PC/ABS composite material is characterized in that: the paint is prepared from the following components in parts by weight:
Figure BDA0002114644950000021
the metal pigment is prepared by mixing vermiculite powder and titanium dioxide in a weight ratio of 1:4 with 2 parts of silicone oil in a high-speed mixer at a rotating speed of 1200 rpm for 5 minutes.
The component also comprises 5-10 parts of ASA, wherein the melt flow rate of the ASA resin is 75-85g/10min, and the test conditions are 230 ℃ and 2.16 kg.
The particle size of the vermiculite powder is 10-15 microns, and the particle size of the titanium dioxide is 0.1-0.5 micron.
The melt flow rate of the PC resin is 35-50g g/10min, and the test condition is 230 ℃ and 2.16 kg.
The melt flow rate of the ABS resin is 35-50g g/10min, and the test condition is 230 ℃ and 2.16 kg.
The compatilizer is maleic anhydride grafted ABS, and the grafting rate is 1.2%.
The antioxidant is at least one of antioxidant 2246, antioxidant 445 and antioxidant 4720.
The lubricant is at least one of zinc stearate, calcium stearate, polyethylene wax and white oil.
A preparation method of a metal texture and scratch-resistant PC/ABS composite material comprises the following steps:
(1) sequentially adding the metal pigment, the compatilizer, the PC, the ABS, the antioxidant and the lubricant into high-speed mixing and mixing for 8-10 minutes, wherein the rotating speed is 800-900 rpm.
(2) Feeding the premix prepared in the step (1) into a double-screw extruder, and preparing the low-precipitation high-efficiency flame-retardant PC/ABS composite material through extrusion, water cooling, grain cutting and drying, wherein the temperature of each zone of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
The invention has the beneficial effects
1. According to the invention, the self-made metal pigment is adopted, and the vermiculite powder and the titanium dioxide are treated with 2 parts of silicone oil according to the proportion of 1:4 by the high-speed mixer, so that the titanium dioxide is coated around the vermiculite powder and uniformly dispersed in the matrix, the metal texture of the material can be greatly improved, and the effect is better than that of singly using the vermiculite powder or the titanium dioxide and the aluminum powder.
2. The melt flow rate of the ASA added into the composite material is 75-85g/10min, so that the composite material has better compatibility with a matrix, and the weld mark caused by the addition of the metal pigment is obviously improved.
3. When the particle size of the vermiculite powder is 10-15 microns and the particle size of the titanium dioxide is 0.1-0.5 micron, the metal texture of the material can be improved, and the friction scratch grade of the material can be improved, and the optimal effect is achieved when the particle size of the vermiculite is 12 microns and the particle size of the titanium dioxide is 0.4 micron.
Detailed Description
The invention is further illustrated by the following specific examples, which are intended to be illustrative only and not limiting.
Performance evaluation and implementation criteria:
(1) tensile strength: tensile Strength according to ASTM D638, specimen type I, specimen size (mm): 165 (13 +/-0.5) and (3.2 +/-0.4), and the drawing speed is 50 mm/min;
(2) bending strength: flexural strength was tested according to ASTM D790, specimen type being specimen size (mm): (127. + -. 2) × (12.7. + -. 0.2) × (3.2. + -. 0.2), bending speed 20 mm/min;
(3) flexural modulus: flexural modulus was tested according to ASTM D790, specimen type being specimen size (mm): (127. + -. 2) × (12.7. + -. 0.2) × (3.2. + -. 0.2), bending speed 20 mm/min;
(4) notched impact strength: notched impact strength was tested according to ASTM D256, specimen type I, specimen size (mm): (63 ± 2) × (12.45 ± 0.2) × (3.1 ± 0.2); the notch type is A type, and the residual thickness of the notch is 1.9 mm;
(5) rub scratch resistance rating: according to the Shenlong D42-1172 standard, the gray scale rating is carried out after the back-and-forth rubbing of a 140 x 90 x 3mm highlight plate by adopting a 2.4kg weight load, and the higher the friction and scratch resistance level is, the poorer the scratch resistance of the material is.
(6) Characterization of weld marks: and a 150t injection molding machine is used, the injection molding temperature is 200 ℃, the injection molding pressure is 70MPa, the pressure maintaining pressure is 60MPa, the pressure maintaining time is 20s, and the cooling time is 25 s. The mold size was 150X 100X 3mm straight, a 30X 30mm hole in the middle, and the gate width was 4 mm. The sample is observed by naked eyes, and is good, namely, the sample has no welding mark basically; and (delta): slight welding marks exist; x: has obvious welding marks.
(7) The metallic texture was visually observed, and the more "●" indicates the better metallic texture
Example 1
PC45 parts, ABS55 parts, metal pigment 10 parts, maleic anhydride grafted ABS8 parts, antioxidant 22460.1 parts and lubricant zinc stearate 0.1 part, wherein the metal pigment is prepared by mixing 2 parts of vermiculite powder, 8 parts of titanium dioxide and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. The particle size of the vermiculite powder is 15 mu m, and the particle size of the titanium dioxide is 0.2 mu m.
The preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 900 revolutions per minute for 8 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Comparative example 1
PC45 parts, ABS55 parts, vermiculite powder 10 parts, maleic anhydride grafted ABS8 parts, antioxidant 22460.1 parts, lubricant zinc stearate 0.1 part, and the particle size of the vermiculite powder is 15 mu m.
The preparation method comprises the following steps: sequentially adding vermiculite powder, a compatilizer, PC, ABS, an antioxidant and a lubricant into high-speed mixing at the rotating speed of 900 revolutions per minute for 8 minutes to prepare a premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Comparative example 2
PC45 parts, ABS55 parts, titanium dioxide 10 parts, maleic anhydride grafted ABS8 parts, antioxidant 22460.1 parts, lubricant zinc stearate 0.1 part, and titanium dioxide particle size 0.2 mu m.
The preparation method comprises the following steps: sequentially adding titanium dioxide, a compatilizer, PC, ABS, an antioxidant and a lubricant into high-speed mixing at the rotating speed of 900 revolutions per minute for mixing for 8 minutes to prepare a premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Comparative example 3
PC45 parts, ABS55 parts, vermiculite powder 4 parts, titanium dioxide 6 parts, maleic anhydride grafted ABS8 parts, antioxidant 22460.1 parts, and lubricant zinc stearate 0.1 part. The particle size of the vermiculite powder is 15 mu m, and the particle size of the titanium dioxide is 0.2 mu m.
The preparation method comprises the following steps: sequentially adding titanium dioxide, vermiculite powder, a compatilizer, PC, ABS, an antioxidant and a lubricant into high-speed mixing at the rotating speed of 900 revolutions per minute for 8 minutes to prepare a premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Comparative example 4
PC45 parts, ABS55 parts, aluminum powder 10 parts, maleic anhydride grafted ABS8 parts, antioxidant 22460.1 parts, and lubricant zinc stearate 0.1 part. The particle size of the pearl powder is 15 mu m
The preparation method comprises the following steps: sequentially adding aluminum powder, a compatilizer, PC, ABS, an antioxidant and a lubricant into high-speed mixing at the rotating speed of 900 revolutions per minute for mixing for 8 minutes to prepare a premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
For ease of comparison, example 1 and comparative examples 1-4 are prepared in the following comparative tables:
Figure BDA0002114644950000071
Figure BDA0002114644950000081
according to example 1 and comparative examples 1 to 4, the titanium dioxide and the vermiculite powder of the present invention treated with the silicone oil at a ratio of 1:4 have a synergistic effect, and have a more excellent metallic texture than the use of the vermiculite powder alone or the titanium dioxide alone, than the aluminum powder mixture.
Example 2
PC60 parts, ABS50 parts, ASA5 parts, metal pigment 15 parts, maleic anhydride grafted ABS7 parts, antioxidant 4450.3 parts and lubricant polyethylene wax 0.3 part, wherein the metal pigment is prepared by mixing 3 parts of vermiculite powder, 12 parts of titanium dioxide and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. The ASA melt flow rate is 80g/10min, the particle size of the vermiculite powder is 10 μm, and the particle size of the titanium dioxide is 0.2 μm.
The preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 800 revolutions per minute for mixing for 10 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Comparative example 5
PC60 parts, ABS50 parts, ASA5 parts, metal pigment 15 parts, maleic anhydride grafted ABS7 parts, antioxidant 4450.3 parts and lubricant polyethylene wax 0.3 part, wherein the metal pigment is prepared by mixing 3 parts of vermiculite powder, 12 parts of titanium dioxide and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. The ASA melt flow rate is 70g/10min, the particle size of the vermiculite powder is 10 μm, and the particle size of the titanium dioxide is 0.2 μm.
The preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 800 revolutions per minute for mixing for 10 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Comparative example 6
PC60 parts, ABS50 parts, ASA5 parts, metal pigment 15 parts, maleic anhydride grafted ABS7 parts, antioxidant 4450.3 parts and lubricant polyethylene wax 0.3 part, wherein the metal pigment is prepared by mixing 3 parts of vermiculite powder, 12 parts of titanium dioxide and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. The ASA melt flow rate is 90g/10min, the particle size of the vermiculite powder is 10 μm, and the particle size of the titanium dioxide is 0.2 μm.
The preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 800 revolutions per minute for mixing for 10 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
For ease of comparison, example 2 is tabulated in comparison with comparative examples 5-6:
Figure BDA0002114644950000101
according to the embodiment 2 and the comparative examples 5-6, the invention selects the resin with 75-85g/10min ASA melt flow rate, which can obviously improve the weld mark of the product and improve the metal texture of the material.
Example 3
PC50 parts, ABS45 parts, ASA 10 parts, metal pigment 15 parts, maleic anhydride grafted ABS5 parts, antioxidant 47200.2 parts and lubricant calcium stearate 0.2 part, wherein the metal pigment is prepared by mixing 3 parts of vermiculite powder (particle size is 10 microns), 12 parts of titanium dioxide (particle size is 0.5 microns) and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. The ASA melt flow rate was 75g/10min,
the preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 800 revolutions per minute for mixing for 9 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Example 4
PC65 parts, ABS35 parts, ASA 8 parts, metal pigment 12 parts, maleic anhydride grafted ABS10 parts, antioxidant 47200.2 parts, antioxidant 22460.3 parts, lubricant calcium stearate 0.2 parts and polyethylene wax 0.3 parts, wherein the metal pigment is prepared by mixing 2.4 parts of vermiculite powder (with the particle size of 15 micrometers), 9.6 parts of titanium dioxide (with the particle size of 0.1 micrometer) and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. ASA melt flow rate 85g/10 min.
The preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 900 revolutions per minute for mixing for 10 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
Example 5
PC55 parts, ABS40 parts, ASA5 parts, metal pigment 14 parts, maleic anhydride grafted ABS6 parts, antioxidant 47200.1 parts and lubricant calcium stearate 0.1 part, wherein the metal pigment is prepared by mixing 2.4 parts of vermiculite powder (particle size of 12 microns), 9.6 parts of titanium dioxide (particle size of 0.4 micron) and 2 parts of silicone oil in a mixer at the rotating speed of 1200 rpm for 5 minutes. ASA melt flow rate 80g/10 min.
The preparation method comprises the following steps: sequentially adding metal pigment, compatilizer, PC, ABS, antioxidant and lubricant into high-speed mixing at the rotating speed of 850 revolutions per minute for mixing for 10 minutes to prepare premix, feeding the premix into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
For comparison purposes, examples 3-5 were tabulated as follows:
Figure BDA0002114644950000121
according to the embodiments 3 to 5, the particle size of the vermiculite powder is 10 to 15 microns, and the particle size of the titanium dioxide is 0.1 to 0.5 micron, so that the friction scratch grade and the metal texture of the material can be greatly improved, and when the particle size of the vermiculite powder is 12 microns and the particle size of the titanium dioxide is 0.4 micron, the friction scratch grade and the metal texture can be optimally obtained.

Claims (10)

1. A metal texture and scratch resistance PC/ABS composite material is characterized in that: the paint is prepared from the following components in parts by weight:
Figure FDA0003084477780000011
the metal pigment is prepared by mixing vermiculite powder, titanium dioxide and 2 parts of silicone oil according to the weight part ratio of 1:4 for 5 minutes at the rotation speed of 1200 rpm of a high-speed mixer.
2. The PC/ABS composite material with metal texture and scratch resistance as claimed in claim 1, wherein the composition further comprises 5-10 parts of ASA, the ASA resin has a melt flow rate of 75-85g/10min, and the test conditions are 230 ℃ and 2.16 kg.
3. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the particle size of the vermiculite powder is 10-15 microns.
4. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the particle size of the titanium dioxide is 0.1-0.5 micron.
5. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the melt flow rate of the PC resin is 35-50g/10min, and the test condition is 230 ℃ and 2.16 kg.
6. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the melt flow rate of the ABS resin is 35-50g/10min, and the test conditions are 230 ℃ and 2.16 kg.
7. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the compatilizer is maleic anhydride grafted ABS, and the grafting rate is 1.2%.
8. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the antioxidant is at least one of antioxidant 2246, antioxidant 445 and antioxidant 4720.
9. A metallic, scratch-resistant PC/ABS composite according to claim 1 or 2, characterized in that: the lubricant is at least one of zinc stearate, calcium stearate and polyethylene wax.
10. A method of preparing a metallic, scratch-resistant PC/ABS composite as claimed in any one of claims 1 to 9, comprising the steps of:
(1) sequentially adding the metal pigment, the compatilizer, the PC, the ABS, the antioxidant and the lubricant into high-speed mixing and mixing for 8-10 minutes, wherein the rotating speed is 800-900 rpm;
(2) feeding the premix prepared in the step (1) into a double-screw extruder, and preparing the PC/ABS composite material with metal texture and scratch resistance through extrusion, water cooling, grain cutting and drying, wherein the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 230 ℃, the temperature of the machine head is 240 ℃, and the rotating speed of the double-screw extruder is 200 revolutions per minute.
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