A PC / ABS alloy, its preparation method and application

Abstract

This invention discloses a PC / ABS alloy, its preparation method, and its applications, relating to the field of polymer composite materials technology. The PC / ABS alloy comprises the following components: PC, ABS, modified graphene, KH550, and a calcium source. Modified graphene, KH550, and Ca synergistically improve the bonding strength between the coating and the PC / ABS alloy, resulting in a more stable overall structure and an electroplating pass rate exceeding 95%. Furthermore, they synergistically enhance mechanical strength, giving the PC / ABS alloy high impact strength.

Description

Technical Field

[0001] This invention relates to the field of polymer composite materials technology, and in particular to a PC / ABS alloy, its preparation method, and its application. Background Technology

[0002] PC / ABS alloy is an alloy formed by blending polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS). It has both the good impact and formability of ABS and the excellent impact and heat resistance of PC, and is widely used in electroplated products such as automotive parts, home appliances, and sanitary ware.

[0003] However, PC / ABS alloys are prone to deformation during heat treatment. Related technologies often improve their heat resistance by increasing the PC content, but this also leads to poor electroplating performance, low peel strength, and problems such as coating peeling and cracking, resulting in a low electroplating yield. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a PC / ABS alloy that has excellent electroplating properties and mechanical strength.

[0005] The present invention also provides a method for preparing PC / ABS alloy.

[0006] This invention also provides applications of PC / ABS alloys.

[0007] According to a first aspect of the present invention, a PC / ABS alloy comprises the following components:

[0008] PC, ABS, modified graphene, KH550 and calcium source.

[0009] The PC / ABS alloy according to embodiments of the present invention has at least the following beneficial effects:

[0010] In the PC / ABS alloy of the embodiment, modified graphene, KH550 and Ca can improve the bonding strength between the coating and the PC / ABS alloy, making the overall structure more stable, the electroplating qualification rate reaches more than 95%, and synergistically improve the mechanical strength, so that the PC / ABS alloy has high impact strength.

[0011] According to some embodiments of the present invention, the PC / ABS alloy comprises, by weight parts:

[0012]

[0013]

[0014] According to some embodiments of the present invention, the PC / ABS alloy comprises, by weight parts:

[0015]

[0016] According to some embodiments of the present invention, the PC / ABS alloy comprises, by weight parts:

[0017]

[0018] According to some embodiments of the present invention, the PC / ABS alloy comprises, by weight parts:

[0019]

[0020] According to some embodiments of the present invention, the PC has a melt flow rate of 5 g / 10 min to 20 g / 10 min at 300 °C and 1.2 kg, as per ISO 1133. For example, it can be 5 g / 10 min, 6 g / 10 min, 7 g / 10 min, 8 g / 10 min, 9 g / 10 min, 10 g / 10 min, 11 g / 10 min, 12 g / 10 min, 13 g / 10 min, 14 g / 10 min, 15 g / 10 min, 16 g / 10 min, 17 g / 10 min, 18 g / 10 min, 19 g / 10 min, or 20 g / 10 min.

[0021] According to some embodiments of the present invention, the heat distortion temperature of the PC at 1.8 MPa, as per ISO 75-2, is 120°C to 130°C. For example, it can be 120°C, 121°C, 122°C, 123°C, 124°C, 125°C, 126°C, 127°C, 128°C, 129°C, or 130°C.

[0022] According to some embodiments of the present invention, the Vicat softening temperature of the PC at 50N and 50℃ / h, as per ISO 306, is 140℃ to 150℃. For example, it can be 140℃, 141℃, 142℃, 143℃, 144℃, 145℃, 146℃, 147℃, 148℃, 149℃, or 150℃.

[0023] According to some embodiments of the present invention, the ABS melt flow rate at 220°C and 10 kg, as per ASTM D1238, is 15 g / 10 min to 30 g / 10 min, or 22 g / 10 min. For example, it can be 15 g / 10 min, 16 g / 10 min, 17 g / 10 min, 18 g / 10 min, 19 g / 10 min, 20 g / 10 min, 21 g / 10 min, 22 g / 10 min, 23 g / 10 min, 24 g / 10 min, 25 g / 10 min, 26 g / 10 min, 27 g / 10 min, 28 g / 10 min, 29 g / 10 min, or 30 g / 10 min.

[0024] According to some embodiments of the present invention, the ABS has a heat distortion temperature of 95°C to 105°C according to ASTM D648. For example, it can be 95°C, 96°C, 97°C, 98°C, 99°C, 100°C, 101°C, 102°C, 103°C, 104°C or 105°C.

[0025] According to some embodiments of the present invention, the ABS has a Vicat softening temperature of 100°C to 110°C according to ASTM D1525. For example, it can be 100°C, 101°C, 102°C, 103°C, 104°C, 105°C, 106°C, 107°C, 108°C, 109°C, or 110°C.

[0026] According to some embodiments of the present invention, the method for preparing the modified graphene includes the following steps:

[0027] A mixture of graphene oxide, copper source, sulfur source and PVP was prepared and reacted at 170℃~190℃. The solid and liquid phases were separated, and the solid phase was the modified graphene.

[0028] According to some embodiments of the present invention, in the method for preparing the modified graphene, the reaction time is 10h to 14h. For example, it can be 10h, 11.5h, 12h, 12.5h, 13h, 13.5h or 14h.

[0029] According to some embodiments of the present invention, in the preparation method of the modified graphene, the reaction medium is water.

[0030] According to some embodiments of the present invention, the graphene oxide is pretreated by ultrasonic dispersion.

[0031] According to some embodiments of the present invention, the ultrasonic dispersion pretreatment time is 15 min to 30 min. For example, it can be 15 min, 16 min, 17 min, 18 min, 19 min, 20 min, 21 min, 22 min, 23 min, 24 min, 25 min, 26 min, 27 min, 28 min, 29 min or 30 min.

[0032] According to some embodiments of the present invention, the temperature of the ultrasonic dispersion pretreatment is 20°C to 30°C. For example, it can be 20°C, 21°C, 22°C, 23°C, 24°C, 25°C, 26°C, 27°C, 28°C, 29°C, or 30°C.

[0033] According to some embodiments of the present invention, the ultrasonic power of the ultrasonic dispersion pretreatment is 80W to 120W. For example, it can be 80W, 82W, 84W, 86W, 88W, 90W, 92W, 94W, 96W, 98W, 100W, 102W, 104W, 106W, 108W, 110W, 112W, 114W, 116W, 118W, or 120W.

[0034] According to some embodiments of the present invention, the graphene oxide is a single-layer graphene oxide.

[0035] According to some embodiments of the present invention, the sheet diameter of the graphene oxide is 0.5 μm to 5 μm. For example, it can be 0.5 μm, 0.6 μm, 0.8 μm, 1 μm, 1.2 μm, 1.4 μm, 1.6 μm, 1.8 μm, 2 μm, 2.2 μm, 2.4 μm, 2.6 μm, 2.8 μm, 3 μm, 3.2 μm, 3.4 μm, 3.6 μm, 3.8 μm, 4 μm, 4.2 μm, 4.4 μm, 4.6 μm, 4.8 μm, or 5 μm.

[0036] According to some embodiments of the present invention, the thickness of the graphene oxide is 0.8 nm to 1.2 nm. For example, it can be 0.8 nm, 0.82 nm, 0.84 nm, 0.86 nm, 0.88 nm, 0.9 nm, 0.92 nm, 0.94 nm, 0.96 nm, 0.98 nm, 1 nm, 1.02 nm, 1.04 nm, 1.06 nm, 1.08 nm, 1.1 nm, 1.12 nm, 1.14 nm, 1.16 nm, 1.18 nm, or 1.2 nm.

[0037] According to some embodiments of the present invention, the copper source includes at least one of copper nitrate, copper acetate, and copper chloride.

[0038] According to some embodiments of the present invention, the sulfur source includes at least one of thioacetamide, sodium sulfide, sodium thiosulfate, and L-cysteine.

[0039] According to some embodiments of the present invention, the molar ratio of the graphene oxide to the copper source and the sulfur source is 1g:(0.0004mol~0.0006mol):(0.0004mol~0.0006mol).

[0040] According to some embodiments of the present invention, the molar ratio of the graphene oxide to the copper source and the sulfur source is 1g:(0.00045mol~0.00055mol):(0.00045mol~0.00055mol).

[0041] According to some embodiments of the present invention, the molar ratio of the graphene oxide to the copper source and the sulfur source is 1g:(0.0005mol~0.00055mol):(0.0005mol~0.00055mol).

[0042] According to some embodiments of the present invention, the reaction concentration of the graphene oxide is 0.8 mg / mL to 1.2 mg / mL. For example, it can be 0.8 mg / mL, 0.85 mg / mL, 0.9 mg / mL, 0.95 mg / mL, 1 mg / mL, 1.05 mg / mL, 1.1 mg / mL, 1.15 mg / mL or 1.2 mg / mL.

[0043] According to some embodiments of the present invention, the calcium source is a calcium-containing compound.

[0044] According to some embodiments of the present invention, the calcium source includes at least one of calcium oxide, calcium hydroxide, calcium carbonate, and calcium oxalate.

[0045] According to some embodiments of the present invention, in the preparation method of the modified graphene, the mass ratio of PVP to graphene oxide is (80-120):1. For example, it can be 80:1, 82:1, 84:1, 86:1, 88:1, 90:1, 92:1, 94:1, 96:1, 98:1, 100:1, 102:1, 104:1, 106:1, 108:1, 110:1, 112:1, 114:1, 116:1, 118:1, or 120:1.

[0046] According to some embodiments of the present invention, the PC / ABS alloy further includes 0 to 1 parts by weight of additives. For example, it may include 0 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, or 1 part of additives.

[0047] According to some embodiments of the present invention, the additives include at least one of pigments, antioxidants, and lubricants.

[0048] According to some embodiments of the present invention, the antioxidant includes at least one selected from antioxidant 1010, antioxidant 1790, antioxidant 619F, antioxidant 626, antioxidant 1076, and antioxidant 168. The antioxidant is obtained by mixing antioxidant 1076 and antioxidant 168 at a mass ratio of 1:(0.9–1.1).

[0049] According to some embodiments of the present invention, if present, the PC / ABS alloy includes 0.1 to 0.5 parts of antioxidant. For example, it may include 0.1, 0.2, 0.3, 0.4, or 0.5 parts of antioxidant.

[0050] According to some embodiments of the present invention, the lubricant comprises at least one of polyethylene wax, silicone masterbatch, N,N'-ethylene bis-stearamide, pentaerythritol stearate, and erucamide.

[0051] According to some embodiments of the present invention, if present, the PC / ABS alloy includes 0.1 to 0.5 parts of lubricant. For example, it may include 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, or 0.5 parts of lubricant.

[0052] The method for preparing the above-described PC / ABS alloy according to a second aspect embodiment of the present invention includes the following steps:

[0053] The components are mixed and melt-extruded to obtain the PC / ABS alloy.

[0054] According to some embodiments of the present invention, the conditions for melt extrusion include: zone 1 temperature of 225°C to 235°C, zone 2 temperature of 235°C to 245°C, zone 3 temperature of 245°C to 255°C, zone 4 temperature of 250°C to 260°C, zone 5 temperature of 255°C to 265°C, and zone 6 temperature of 235°C to 245°C.

[0055] According to some embodiments of the present invention, the conditions for the melt extrusion include a rotation speed of 150 r / min to 300 r / min.

[0056] According to some embodiments of the present invention, the conditions for melt extrusion include: the length-to-diameter ratio of the twin-screw extruder is 30 to 35:1.

[0057] Application of the above-described PC / ABS alloy in electroplated articles according to a third aspect embodiment of the present invention.

[0058] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Detailed Implementation

[0059] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0060] Unless otherwise specified in the examples, the procedures should be performed under standard conditions or conditions recommended by the manufacturer. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0061] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0062] "Parts by mass" refers to the basic unit of measurement that expresses the mass ratio of multiple components. One part can represent any unit mass, such as 1g or 2.689g. If we say that component A has "a" parts by mass and component B has "b" parts by mass, it means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, it can mean that the mass of component A is aK and the mass of component B is bK (K is any number representing a multiplier). It is important to understand that, unlike the number of parts by mass, the sum of the mass parts of all components is not limited to 100 parts.

[0063] "And / or" is used to indicate that one or both of the described situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0064] Unless otherwise specified, "room temperature" refers to (25±5)℃.

[0065] In the embodiments and comparative examples of the present invention, the PC grade is 6555 (Covestro (Bayer) of Germany), the melt flow rate at 300°C and 1.2 kg is 10 g / 10 min according to ISO 1133, the heat distortion temperature at 1.8 MPa is 125°C according to ISO 75-2, and the Vicat softening temperature at 50 N and 50°C / h is 144°C according to ISO 306.

[0066] The ABS grade is PA757 (Chi Mei Corporation, Taiwan). According to ASTM D1238, the melt flow rate at 220℃ and 10kg is 22g / 10min, the heat distortion temperature according to ASTM D648 is 99℃, and the Vicat softening temperature according to ASTM D1525 is 105℃.

[0067] The antioxidant was obtained by mixing antioxidant 1076 and antioxidant 168 in a mass ratio of 1:1.

[0068] The lubricant is pentaerythritol stearate (lubricant PETS);

[0069] The graphene oxide was purchased from Jiangsu Xianfeng Nanomaterials Technology Co., Ltd. It is a single-layer graphene oxide, numbered XF002-2, with a sheet diameter of 0.5μm to 5μm and a thickness of 0.8nm to 1.2nm.

[0070] In the embodiments and comparative examples of this invention, the preparation steps of the modified graphene are as follows:

[0071] (1) Mix graphene oxide with deionized water (final concentration of graphene oxide is 1 mg / mL), and ultrasonically disperse at room temperature for 20 min. The ultrasonic power is 100 W and the ultrasonic temperature is controlled below 30℃ to obtain graphene oxide dispersion.

[0072] (2) Add 1 mg of copper nitrate, 0.42 mg of sodium sulfide and 1 g of PVP to 10 mL of graphene oxide dispersion, and perform hydrothermal reaction at 180 °C for 12 h; after the reaction solution is cooled to room temperature, centrifuge at 10000 rpm for 20 min, wash, and the modified graphene is obtained.

[0073] Example 1

[0074] This example provides a PC / ABS alloy prepared from the following components in parts by weight:

[0075]

[0076]

[0077] The preparation method of this PC / ABS alloy is as follows:

[0078] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0079] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0080] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0081] Example 2

[0082] This example provides a PC / ABS alloy prepared from the following components in parts by weight:

[0083]

[0084] The preparation method of this PC / ABS alloy is as follows:

[0085] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0086] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0087] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0088] Example 3

[0089] This example provides a PC / ABS alloy prepared from the following components in parts by weight:

[0090]

[0091]

[0092] The preparation method of this PC / ABS alloy is as follows:

[0093] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0094] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0095] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0096] Example 4

[0097] This example provides a PC / ABS alloy prepared from the following components in parts by weight:

[0098]

[0099] The preparation method of this PC / ABS alloy is as follows:

[0100] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0101] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0102] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0103] Example 5

[0104] This example provides a PC / ABS alloy prepared from the following components in parts by weight:

[0105]

[0106]

[0107] The preparation method of this PC / ABS alloy is as follows:

[0108] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0109] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0110] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0111] Comparative Example 1

[0112] This example provides a PC / ABS alloy, which differs from Example 1 only in that it defaults to modified graphene.

[0113] This PC / ABS alloy is prepared from the following components in parts by weight:

[0114]

[0115] The preparation method of this PC / ABS alloy is as follows:

[0116] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0117] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0118] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0119] Comparative Example 2

[0120] This example provides a PC / ABS alloy, which differs from Example 1 only in that it defaults to KH550.

[0121] This PC / ABS alloy is prepared from the following components in parts by weight:

[0122]

[0123] The preparation method of this PC / ABS alloy is as follows:

[0124] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0125] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0126] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0127] Comparative Example 3

[0128] This example provides a PC / ABS alloy, which differs from Example 1 only in that it uses CaO by default.

[0129] This PC / ABS alloy is prepared from the following components in parts by weight:

[0130]

[0131] The preparation method of this PC / ABS alloy is as follows:

[0132] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0133] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0134] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0135] Comparative Example 4

[0136] This example provides a PC / ABS alloy that differs from Example 1 only in that it defaults to modified graphene, KH550, and CaO.

[0137] This PC / ABS alloy is prepared from the following components in parts by weight:

[0138]

[0139] The preparation method of this PC / ABS alloy is as follows:

[0140] S1. Weigh out the corresponding mass of each component and add it into a high-speed mixer. Stir for 10 minutes at a stirring speed of 160 r / min to obtain a mixture.

[0141] S2. The mixture is fed into a twin-screw extruder, and after melt extrusion and cooling, a PC / ABS alloy is obtained;

[0142] The melt extrusion conditions are as follows: zone 1 temperature is 230℃, zone 2 temperature is 240℃, zone 3 temperature is 250℃, zone 4 temperature is 255℃, zone 5 temperature is 260℃, zone 6 temperature is 240℃, and the rotation speed is 200 r / min; the length-to-diameter ratio of the twin-screw extruder is 32:1.

[0143] Detection example

[0144] The properties of the PC / ABS alloys in Examples 1-5 and Comparative Examples 1-4 were tested. The testing methods are as follows:

[0145] (1) Electroplating adhesion: According to GMW14668-2010 standard, the stretching speed is 100mm / min and the angle is 90°.

[0146] (2) Electroplating pass rate: The test samples were injection molded into 140mm*90mm*3mm templates for electroplating. The concentrations of concentrated sulfuric acid and chromic acid in the electroplating roughening solution were both 380g / L, the roughening temperature was 65℃, and the roughening time was 10min. 100 templates were electroplated in each group, and the electroplating condition of the templates was evaluated by professional electroplating technicians, and the pass rate was calculated.

[0147] (3) Impact strength: The sample to be tested is injection molded into a template of 80mm*10mm*4mm and tested according to ISO 179 standard with a notch depth of 2.0mm.

[0148] The test results are shown in Table 1.

[0149] Table 1

[0150]

[0151]

[0152] The PC / ABS alloys in Examples 1-3 all exhibit excellent electroplating performance (high electroplating adhesion and high electroplating pass rate) and mechanical strength. The absence of any of the modified graphene, KH550, or CaO will lead to a deterioration in performance.

[0153] In summary, the modified graphene, KH550, and CaO in the PC / ABS alloy of the present invention have a significant synergistic effect in improving electroplating performance and mechanical strength.

[0154] The embodiments of the present invention have been described in detail above with reference to the examples. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A PC / ABS alloy, characterized in that, The PC / ABS alloy consists of the following components in mass fraction: PC 10~35 parts, ABS 55~85 parts, Modified graphene 2~12 parts, KH550 1~10 parts, Calcium source 0.1~1.2 parts. The preparation method of the modified graphene comprises the following steps: Preparation of a mixture of graphene oxide, copper source, sulfur source and PVP, reaction at 170~190℃, solid-liquid separation, and the solid phase is the modified graphene.

2. The PC / ABS alloy according to claim 1, characterized in that, The PC / ABS alloy consists of the following components in mass fraction: PC 15~30 parts, ABS 60~80 parts, Modified graphene 3~10 parts, KH550 2~8 parts, Calcium source 0.3~1 parts.

3. The PC / ABS alloy according to claim 1 or 2, characterized in that, The melt flow rate of the PC is 5~20 g / 10 min at 300℃ and 1.2 kg according to ISO 1133; And / or, the heat distortion temperature of the PC is 120~130℃ at 1.8 MPa according to ISO 75-2; And / or, the Vicat softening temperature of the PC is 140~150℃ at 50 N and 50℃ / h according to ISO 306.

4. The PC / ABS alloy according to claim 1 or 2, characterized in that, The melt flow rate of the ABS is 15~30 g / 10 min at 220℃ and 10 kg according to ASTM D1238; And / or, the heat distortion temperature of the ABS is 95~105℃ according to ASTM D648; And / or, the Vicat softening temperature of the ABS is 100~110℃ according to ASTM D1525.

5. The PC / ABS alloy according to claim 1 or 2, characterized in that, In the preparation method of the modified graphene, the reaction time is 10~14 h.

6. The PC / ABS alloy according to claim 1 or 2, characterized in that, The mass molar ratio of the graphene oxide to the copper source and the sulfur source is 1 g:0.0004~0.0006 mol:0.0004~0.0006 mol.

7. The PC / ABS alloy according to claim 1 or 2, characterized in that, The calcium source includes at least one of calcium oxide, calcium hydroxide, calcium carbonate and calcium oxalate.

8. The PC / ABS alloy of claim 1, wherein, The PC / ABS alloy further comprises 0~1 parts of an auxiliary agent in mass fraction.

9. The PC / ABS alloy according to claim 8, characterized in that, The auxiliary agent includes at least one of a pigment, an antioxidant and a lubricant.

10. The PC / ABS alloy of claim 9, wherein, The antioxidant includes at least one of antioxidant 1010, antioxidant 1790, antioxidant 619F, antioxidant 626, antioxidant 1076 and antioxidant 168; And / or, the lubricant includes at least one of polyethylene wax, silicone master batch, N, N'-ethylene bis-stearamide, pentaerythritol stearate and erucamide.

11. Process for the production of a PC / ABS alloy according to any one of claims 1 to 10, characterized in that, The following steps are included: Mixing of the components, melt extrusion, and the PC / ABS alloy is obtained.

12. Use of the PC / ABS alloy according to any one of claims 1 to 10 in electroplated products.

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