CN115703924A - High-impact-resistance conductive PC/ABS composite material - Google Patents
High-impact-resistance conductive PC/ABS composite material Download PDFInfo
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- CN115703924A CN115703924A CN202110899497.5A CN202110899497A CN115703924A CN 115703924 A CN115703924 A CN 115703924A CN 202110899497 A CN202110899497 A CN 202110899497A CN 115703924 A CN115703924 A CN 115703924A
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Abstract
The invention provides a high-impact-resistance conductive PC/ABS composite material which comprises the following components in parts by weight: 60 to 90 parts by mass of Polycarbonate (PC); 5-20 parts of ABS (butylene rubber, styrene and acrylonitrile); 3-15 parts of a toughening agent; 5-30 parts by mass of a conductive material; 0.05 to 2 parts by mass of an antioxidant; the toughening agent can be one of methyl methacrylate-butadiene-styrene terpolymer (MBS) and the like or compounded with other six toughening agents; the conductive material can be one of carbon nano tubes and the like or compounded with other six conductive materials; the invention has the beneficial effects that the toughening agent, the carbon nano tube and other conductive materials are added into the PC/ABS composite material, so that the conductivity of the polymer is improved, and the impact resistance is improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of Polycarbonate (PC) and ABS composite materials, in particular to a high-impact-resistance conductive PC/ABS composite material.
[ background of the invention ]
ABS (butylene rubber, styrene and acrylonitrile terpolymer, hereinafter referred to as ABS) material has excellent formability, polycarbonate (PC) has high mechanical property, impact strength, temperature resistance, ultraviolet (UV) resistance and other properties, and the PC/ABS material is widely used in automobile internal parts, business machines, communication equipment, household appliances and lighting equipment by combining the performances of the two. However, pure PC, ABS and PC/ABS engineering plastics have good electrical insulation properties and are hardly affected by temperature, humidity and frequency, and can be used in most environments. The poor conductivity of the three partially limits the application field and range of the three. In order to improve the conductivity, the traditional method is to physically blend materials such as conductive carbon black, conductive graphite, graphene and carbon nanotubes with resin by a solution method to make the resin conductive. However, the conductive material and the resin have poor compatibility, so that the dispersion uniformity of the conductive material in the resin cannot meet the requirement, and the physical blending method of the solution limits large-scale industrial production.
In view of the above, there is a need to develop a high impact resistant PC/ABS conductive composite material with good and uniform conductivity.
[ summary of the invention ]
The technical problem to be solved by the invention is as follows: the problems that in the prior art, in order to improve the conductivity of the polymer of the PC/ABS material, conductive materials such as conductive carbon black and carbon nano tubes are added into the PC/ABS material, the body distribution of the conductive materials is uneven, and the large-scale industrial production is limited by a solution physical blending method are solved. The invention provides a high-impact-resistance conductive PC/ABS composite material to solve the problems.
The technical scheme for solving the problems is as follows:
a high impact resistance conductive PC/ABS composite material is characterized by comprising the following components in parts by mass relative to 100 parts by mass of a resin finished product:
60-90 parts by mass of Polycarbonate (PC);
5-20 parts of ABS (butylene rubber, styrene and acrylonitrile);
3-15 parts of a toughening agent;
5-30 parts by mass of a conductive material;
0.05 to 2 parts by mass of an antioxidant;
the Polycarbonate (PC) is one or more of bisphenol A polycarbonate, polyester polycarbonate, organosilicon copolymer PC, cyclohexane bisphenol A polycarbonate and high-temperature resistant polycarbonate synthesized by bisphenol TMC.
The Polycarbonate (PC) has a melt mass flow rate of 20-60 g/10min at a temperature of 300 ℃ and a load weight of 1.2 Kg.
The ABS is copolymerized ABS, the synthetic method is ternary copolymerization of butylene rubber, styrene and acrylonitrile, and the machining notch impact of the ABS under ISO179The strength is 20KJ/m 2 ～40KJ/m 2 The melt mass flow rate at 260 ℃ and a load weight of 2.16Kg is between 5 and 15g/10 min.
The toughening agent can be one or a mixture of more of styrene-butadiene-styrene copolymer (SBS), styrene-ethylene-butyl copolymer (SEBS), methyl methacrylate-butadiene-styrene terpolymer (MBS), chlorinated Polyethylene (CPE), ethylene-vinyl acetate copolymer (EVA), styrene-butadiene-styrene copolymer grafted maleic anhydride (SBS-g-MAH) or styrene-ethylene-butyl copolymer grafted maleic anhydride (SEBS-g-MAH).
The conductive material is compounded by one or a mixture of more of carbon nano tubes, conductive carbon black, conductive graphite, graphene, graphite alkyne, acetylene carbon black and gold nano particles. The carbon nano tube can be a single-wall carbon nano tube, a double-wall carbon nano tube or a multi-wall carbon nano tube, the diameter is between 0.7nm and 7nm, and the length-diameter ratio L/D of the carbon nano tube is more than 500; the graphite or graphene can be prepared by single-layer, oxidation, reduction, amination, carboxylation and the like.
The antioxidant is one or more of hindered phenols, phosphites, thio antioxidants and the like.
The invention has the beneficial effects that the conductive materials such as the carbon nano tube and the like are added into the PC/ABS composite material to improve the conductivity of the polymer, and the impact resistance is improved by adding the toughening agent.
[ detailed description ] embodiments
A high impact resistance conductive PC/ABS composite material is characterized by comprising the following components in parts by mass relative to 100 parts by mass of a resin finished product:
60 to 90 parts by mass of Polycarbonate (PC);
5-20 parts by mass of ABS;
3-15 parts of a toughening agent;
5-30 parts by mass of a conductive material;
0.05 to 2 parts by mass of an antioxidant;
in addition, the antioxidant is a compound antioxidant which prevents the material from yellowing or degrading during processing, and comprises one or more of hindered phenol antioxidants, phosphite antioxidants, thio antioxidants and the like.
Specifically, the conductive material is one or a mixture of more of carbon nano tubes, conductive carbon black, conductive graphite, graphene, graphite alkyne, acetylene carbon black and gold nano particles. The carbon nano tube can be a single-wall carbon nano tube, a double-wall carbon nano tube or a multi-wall carbon nano tube, the diameter is between 0.7nm and 7nm, and the length-diameter ratio L/D of the carbon nano tube is more than 500; the graphite or graphene can be prepared by single-layer, oxidation, reduction, amination, carboxylation and the like.
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
A high-impact-resistance conductive PC/ABS composite material comprises the following components in parts by mass: 71.7 parts of Polycarbonate (PC), 15 parts of ABS, 8 parts of toughening agent, 5 parts of conductive material and 0.3 part of antioxidant.
Specifically, the Polycarbonate (PC) selected in this example is bisphenol a type linear Polycarbonate (PC) synthesized by phosgene method; the weight average molecular weight is 20000-50000, and the molecular weight distribution is 1-2; the melt mass flow rate MI of Polycarbonate (PC) at 300 ℃ and a load weight of 1.2Kg is 50 to 55g/10min.
The ABS selected in the embodiment is copolymer ABS, the synthetic method is ternary polymerization of butylene rubber, styrene and acrylonitrile, and the impact strength of a machining notch of the ABS under ISO179 is 20KJ/m 2 ～40KJ/m 2 The melt mass flow rate MI = 5-15 g/10min (260 ℃/2.16 Kg).
The toughening agent selected in the embodiment is a methyl methacrylate-butadiene-styrene terpolymer (MBS); the addition amount was 8 parts by mass.
The conductive material selected in this embodiment is 5 parts of carbon nanotubes. The carbon nano tube is a double-wall carbon nano tube, the diameter is between 0.7nm and 7nm, and the length-diameter ratio L/D of the carbon nano tube is more than 500.
The antioxidant is 0.3 part of hindered phenol compound antioxidant.
When the high impact resistance conductive PC/ABS composite material is prepared, the components are weighed according to the proportion, and the components are uniformly mixed and then are melted, extruded and granulated.
Example 2
A high-impact-resistance conductive PC/ABS composite material comprises the following components in parts by mass: 66.7 parts of Polycarbonate (PC), 15 parts of ABS, 8 parts of toughening agent, 10 parts of conductive material and 0.3 part of antioxidant.
Specifically, the Polycarbonate (PC) selected in this example is bisphenol a type linear polycarbonate, which is synthesized by phosgene method; the weight average molecular weight is 20000-50000, and the molecular weight distribution is 1-2; the melt mass flow rate MI of Polycarbonate (PC) at a temperature of 300 ℃ and a load weight of 1.2Kg is between 50 and 55g/10min.
The ABS selected in the embodiment is copolymer ABS, the synthetic method is ternary polymerization of butylene rubber, styrene and acrylonitrile, and the impact strength of a machining notch of the ABS under ISO179 is 20KJ/m 2 ～40KJ/m 2 The melt mass flow rate MI = 5-15 g/10min (260 ℃/2.16 Kg).
The toughening agent selected in the embodiment is a methyl methacrylate-butadiene-styrene terpolymer (MBS); the addition amount was 8 parts by mass.
The conductive material selected in this embodiment is 5 parts of carbon nanotubes. The carbon nano tube is a double-wall carbon nano tube, the diameter is between 0.7nm and 7nm, and the length-diameter ratio L/D of the carbon nano tube is more than 500.
The antioxidant is 0.3 part of hindered phenol compound antioxidant.
When the high impact resistance conductive PC/ABS composite material is prepared, the components are weighed according to the proportion, and the components are uniformly mixed and then are melted, extruded and granulated.
Example 3
A high-impact-resistance conductive PC/ABS composite material comprises the following components in parts by mass: 61.7 parts of Polycarbonate (PC), 15 parts of ABS, 8 parts of toughening agent, 15 parts of conductive material and 0.3 part of antioxidant.
Specifically, the Polycarbonate (PC) selected in this example is bisphenol a type linear polycarbonate, which is synthesized by phosgene method; the weight average molecular weight is 20000-50000, and the molecular weight distribution is 1-2; the melt mass flow rate MI of Polycarbonate (PC) at 300 ℃ and a load weight of 1.2Kg is 50 to 55g/10min.
The ABS selected in the embodiment is copolymer ABS, the synthetic method is ternary polymerization of butylene rubber, styrene and acrylonitrile, and the impact strength of a machining notch of the ABS under ISO179 is 20KJ/m 2 ～40KJ/m 2 The melt mass flow rate MI = 5-15 g/10min (260 ℃/2.16 Kg).
The toughening agent selected in this embodiment is a methyl methacrylate-butadiene-styrene terpolymer (MBS); the addition amount was 8 parts by mass.
The conductive material selected in this embodiment is 15 parts of carbon nanotubes. The carbon nano tube is a double-wall carbon nano tube, the diameter of the carbon nano tube is between 0.7nm and 7nm, and the length-diameter ratio L/D of the carbon nano tube is more than 500.
When the high impact resistance conductive PC/ABS composite material is prepared, the components are weighed according to the proportion, and the components are uniformly mixed and then are subjected to melt extrusion granulation.
TABLE 1 test results
| Test item | Test standard | Example 1 | Example 2 | Example 3 |
| Tensile strength (Mpa) | ISO 527 | 75 | 82 | 91 |
| Elongation at Break (%) | ISO 527 | 9 | 5 | 3 |
| Flexural strength (Mpa) | ISO 178 | 110 | 135 | 150 |
| Flexural modulus (MPa) | ISO 178 | 3050 | 4240 | 6080 |
| Notched Izod impact Strength (KJ/m) 2 ) | ISO 179 | 22 | 17 | 14 |
| Surface resistivity (Ohm) | IEC 60093 | 4*10 5 | 1*10 5 | 5*10 4 |
From the test results of example 1, example 2, and example 3, it can be seen that: according to the invention, the flexural modulus is greatly improved, the surface resistivity is reduced, the rigidity and the conductivity of a finished product are improved by adding the conductive material (the embodiment takes the example of adding the carbon nano tube), and the impact resistance is improved by adding the toughening agent (the embodiment takes the example of adding the MBS) in the invention.
It should be noted that the present invention is not limited to the above-mentioned embodiments, and any simple modification, equivalent change and modification made to the above-mentioned embodiments by those skilled in the art based on the technical solution of the present invention fall within the protection scope of the present invention.
Claims (8)
1. A high impact resistance conductive PC/ABS composite material is characterized by comprising the following components in parts by mass relative to 100 parts by mass of a resin finished product:
60-90 parts by mass of Polycarbonate (PC);
5-20 parts by mass of ABS;
3-15 parts of a toughening agent;
5-30 parts by mass of a conductive material;
0.05 to 2 parts by mass of an antioxidant.
2. The conductive Polycarbonate (PC)/ABS composite material with high impact resistance according to claim 1, wherein: the Polycarbonate (PC) is one or more of bisphenol A polycarbonate, polyester polycarbonate, organosilicon copolymer PC, cyclohexane bisphenol A polycarbonate and high-temperature resistant polycarbonate synthesized by bisphenol TMC.
3. The high impact resistance conductive PC/ABS composite of claim 2 wherein: the Polycarbonate (PC) has a melt mass flow rate of (20-60) g/10min at a temperature of 300 ℃ and a load weight of 1.2 Kg.
4. The high impact resistance conductive PC/ABS composite material according to claim 1, wherein: the ABS isThe copolymer ABS is synthesized by the ternary polymerization of butylene rubber, styrene and acrylonitrile, and the impact strength of a machining notch of the ABS under ISO179 is 20KJ/m 2 ～40KJ/m 2 The melt mass flow rate MI = 5-15 g/10min (260 ℃/2.16 Kg).
5. The high impact resistance conductive PC/ABS composite material according to claim 1, wherein: the conductive material is compounded by one or a mixture of more of carbon nano tubes, conductive carbon black, conductive graphite, graphene, graphite alkyne, acetylene black and gold nano particles.
6. The high impact resistance conductive PC/ABS composite material of claim 5, wherein: the carbon nano tube can be a single-wall carbon nano tube, a double-wall carbon nano tube or a multi-wall carbon nano tube, the diameter is between 0.7 and 7nm, and the length-diameter ratio L/D is more than 500.
7. The high impact resistance conductive PC/ABS composite of claim 1 wherein: the toughening agent can be one or a mixture of more of styrene-butadiene-styrene copolymer (SBS), styrene-ethylene-butyl copolymer (SEBS), methyl methacrylate-butadiene-styrene terpolymer (MBS), chlorinated Polyethylene (CPE), ethylene-vinyl acetate copolymer (EVA), styrene-butadiene-styrene copolymer grafted maleic anhydride (SBS-g-MAH) or styrene-ethylene-butyl copolymer grafted maleic anhydride (SEBS-g-MAH).
8. The high impact resistance conductive PC/ABS composite material according to claim 1, wherein: the antioxidant is one or more of hindered phenol antioxidant, phosphite antioxidant, thio antioxidant and the like.
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| CN202110899497.5A CN115703924A (en) | 2021-08-06 | 2021-08-06 | High-impact-resistance conductive PC/ABS composite material |
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