CN110551381A - High-flow flame-retardant PC/ABS carbon nanotube conductive material and product thereof - Google Patents
High-flow flame-retardant PC/ABS carbon nanotube conductive material and product thereof Download PDFInfo
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- CN110551381A CN110551381A CN201810555354.0A CN201810555354A CN110551381A CN 110551381 A CN110551381 A CN 110551381A CN 201810555354 A CN201810555354 A CN 201810555354A CN 110551381 A CN110551381 A CN 110551381A
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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
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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
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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
- 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
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of high polymer materials, in particular to a high-flow flame-retardant PC/ABS carbon nanotube conductive material and a product thereof. The high-flow flame-retardant PC/ABS carbon nanotube conductive material comprises the following components in parts by weight: 61-96.7 parts of PC/ABS resin; 0.1-5 parts of hypophosphite flame retardant; 1-20 parts of phosphate flame retardant; 0.1-5 parts of SAN; 0.1-2 parts of hyperbranched polyphosphate; 2-7 parts of carbon nanotubes. The high-flow flame-retardant PC/ABS carbon nanotube conductive material is prepared by taking PC and ABS as matrixes and adding a compound flow modifier into the materials, and the MI of a corresponding product can reach 20-100g/10 min.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of high polymer materials, in particular to a high-flow flame-retardant PC/ABS carbon nanotube conductive material and a product thereof.
[ background of the invention ]
PC resin is also polycarbonate, and ABS plastic is a terpolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S). SAN is the English abbreviation of styrene-acrylonitrile copolymer.
The conductive medium in the conductive plastic is usually carbon fiber, carbon black and carbon nano tube, the carbon nano tube has the largest specific surface area and the length-diameter ratio, the added parts are the least when the same conductive grade is reached, the conductive plastic has the trend of replacing carbon fiber and conductive carbon black at present, and the conductive plastic has wide development prospect.
However, the L/D of the carbon nanotubes is more than 500, the specific surface area is large, the surface energy is large, the fluidity is reduced when the carbon nanotubes are added into the polymer, and the lubricating effect is reduced when an organic lubricant or a flow modifier is added into the formula and adsorbed by the carbon nanotubes.
in view of the above, it is necessary to develop a high-flow flame-retardant PC/ABS carbon nanotube conductive material and a product thereof, so as to solve the problem of low fluidity of the carbon nanotube conductive material in the prior art.
[ summary of the invention ]
Therefore, the invention aims to provide a high-flow flame-retardant PC/ABS carbon nanotube conductive material so as to obtain a carbon nanotube conductive material with high fluidity.
In order to achieve the purpose, the high-flow flame-retardant PC/ABS carbon nanotube conductive material comprises the following components in parts by weight:
Optionally, the weight ratio of the PC resin to the ABS resin is 9: 1-5: 5.
Optionally, the PC resin is at least one of bisphenol a polycarbonate, polyester polycarbonate, silicone copolymer polycarbonate, cyclohexane bisphenol a polycarbonate, bisphenol a-organosiloxane copolymer polycarbonate, bisphenol TMC synthesized polycarbonate.
Alternatively, the PC resin may have a melt mass flow rate of 3 to 50g/10min at a temperature of 300 ℃ under a load of 1.2 Kg.
Optionally, the hypophosphite flame retardant is a vinyl aluminum hypophosphite flame retardant.
Optionally, the phosphate flame retardant is at least one of 2, 6-tolyl 1,3 phenylene phosphate, tetraphenyl bisphenol a diphosphate (BDP), tetraphenyl Resorcinol Diphosphate (RDP), triphenyl phosphate (TPP).
Optionally, the weight average molecular weight of the SAN is 5000-.
Optionally, the high-flow flame-retardant PC/ABS carbon nanotube conductive material further comprises at least one of an anti-dripping agent, an antibacterial agent, an ultraviolet absorber and a release agent.
Optionally, the high-flow flame-retardant PC/ABS carbon nanotube conductive material comprises 0-1 part of the anti-dripping agent by weight.
Optionally, the carbon nanotube is at least one of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube.
Optionally, the diameter of the single-walled carbon nanotube, the double-walled carbon nanotube or the multi-walled carbon nanotube is 0.7nm-7 nm.
Optionally, the carbon nanotubes with the diameter of 0.7nm-7nm account for at least 50% of the total amount of the carbon nanotubes in parts by weight.
Optionally, the aspect ratio L/D of the carbon nanotubes is above 500.
optionally, the carbon nanotube has an oil absorption value of 300ml/100g or more, a nitrogen adsorption BET specific surface area of 250m 2/g or more, and an iodine adsorption value of 400mg/g or more.
Optionally, the high-flow flame-retardant PC/ABS carbon nanotube conductive material further comprises 0-3 parts of an organosilicon flame retardant, wherein the organosilicon flame retardant is at least one of polysilazane, polymethoxyphenylsilane, hydroxymethyl silane and cross-linked Polydimethylsiloxane (PDMS).
In addition, the invention also provides a product which is produced after the high-flow flame-retardant PC/ABS carbon nanotube conductive material is molded.
Compared with the prior art, the high-flow flame-retardant PC/ABS carbon nanotube conductive material is prepared by taking PC + ABS as a matrix and adding a compound flow modifier into the material, and the MI of a corresponding product can reach 20-100g/10 min.
[ detailed description ] embodiments
The high-flow flame-retardant PC/ABS carbon nanotube conductive material disclosed by the invention comprises the following components in parts by weight:
61-96.7 parts of PC/ABS resin, wherein the PC resin is at least one of bisphenol A polycarbonate, polyester polycarbonate, organosilicon copolymer polycarbonate, cyclohexane bisphenol A polycarbonate, bisphenol A-organosiloxane copolymer polycarbonate and polycarbonate synthesized by bisphenol TMC, and the melt mass flow rate of the PC is 3-50g/10min at the temperature of 300 ℃ and the load of 1.2 Kg. The weight ratio of the PC resin to the ABS resin is 9: 1-5: 5.
1-20 parts of phosphate flame retardant, wherein the phosphate flame retardant is at least one of 1,3 phenylene phosphoric acid (2, 6-methylphenyl) tetraester, tetraphenyl bisphenol A diphosphate (BDP for short), tetraphenyl resorcinol diphosphate (RDP for short) and triphenyl phosphate (TPP for short).
0.1-5 parts of SAN, wherein the weight-average molecular weight of the SAN is 5000-20000. 0.1-2 parts of hyperbranched polyphosphate. After the compound flow modifier is added, the MI of the prepared product can reach 20-100g/10 min.
2-7 parts of carbon nanotubes, wherein the carbon nanotubes are at least one of single-walled carbon nanotubes, double-walled carbon nanotubes and multi-walled carbon nanotubes, the diameters of the single-walled carbon nanotubes, the double-walled carbon nanotubes and the multi-walled carbon nanotubes are 0.7nm-7nm, the carbon nanotubes with the diameters of 0.7nm-7nm at least account for 50% of the total amount of the carbon nanotubes in parts by weight, the length-diameter ratio L/D of the carbon nanotubes is more than 500, the oil absorption value of the carbon nanotubes is more than 300ml/100g, the nitrogen adsorption BET specific surface area is more than 250m 2/g, and the iodine adsorption value is more than 400mg/g, and the surface resistance of the conductive material is reduced to 10 3 ohm.
0.1-5 parts of hypophosphite flame retardant, wherein the hypophosphite flame retardant can be vinyl aluminum hypophosphite flame retardant.
The material can also comprise 0-3 parts of organic silicon flame retardant, wherein the organic silicon flame retardant is at least one of polysilane, polymethoxyphenyl silane, hydroxymethyl silane and crosslinked Polydimethylsiloxane (PDMS).
Wherein, in order to obtain the functional composite material, on the premise of not influencing the functional effect, the high-flow flame-retardant PC/ABS carbon nanotube conductive material also comprises at least one of an anti-dripping agent, an antibacterial agent, an ultraviolet absorbent and a mold release agent.
For further understanding of the objects, effects and technical means of the present invention, the following description is given with reference to the comparative examples and specific examples.
Example 1
Weighing the components in corresponding weight; then, stirring the components by using a single-shaft stirring barrel; and respectively adding the mixture into a double-screw extruder to perform melt extrusion granulation.
Example 2
Weighing the components in corresponding weight; then, stirring the components by using a single-shaft stirring barrel; and respectively adding the mixture into a double-screw extruder to perform melt extrusion granulation.
Comparative example 1
Weighing the components in corresponding weight; then, stirring the components by using a single-shaft stirring barrel; and respectively adding the mixture into a double-screw extruder to perform melt extrusion granulation.
Comparative example 2
Weighing the components in corresponding weight; then, stirring the components by using a single-shaft stirring barrel; and respectively adding the mixture into a double-screw extruder to perform melt extrusion granulation.
After melt extrusion granulation of the above examples and comparative examples, the particles in each example were injection molded into standard test bars on an injection molding machine, and the mechanical properties of the resulting materials were tested according to the standard, with the test results shown in table 1:
Table 1: test results of examples and comparative examples
| Test items | Test standard | Example 1 | Comparative example 1 | Example 2 | Comparative example 2 |
| MI(300℃1.2Kg) | ISO1133 | 20 | 10 | 70 | 30 |
| tensile Strength (MPa) | ISO1183 | 59.3 | 59.5 | 55.1 | 60.4 |
| Elongation at Break (%) | ISO527-1,-2 | 3.4 | 4.1 | 3.6 | 2.5 |
| Flexural Strength (MPa) | ISO 178 | 82.1 | 79.5 | 85.1 | 84.2 |
| Flexural modulus (MPa) | ISO 178 | 2800 | 2700 | 2900 | 2800 |
| Impact Strength (KJ/m)2) | ISO 180 | 5.2 | 6.2 | 5.7 | 6.8 |
| Flame retardant rating | UL-94 | 1.6mmV-0 | 1.6mmV-0 | 1.6mmV-0 | 1.6mmV-0 |
| Volume resistance (ohm. cm) | IEC60093 | 104 | 104 | 104 | 104 |
From the above, it can be seen that: comparing example 1 with comparative example 1, and comparing example 2 with comparative example 2, the addition of hyperbranched polyphosphate to the material can improve the melt mass flow rate MI, and the flexural strength and flexural modulus are also increased.
In addition, the invention also provides a product which is produced after the high-flow flame-retardant PC/ABS carbon nanotube conductive material is molded, and the product can be widely applied to electronic and electrical products, such as printers, computer CPU conductive parts and other fields.
Claims (16)
1. A high-flow flame-retardant PC/ABS carbon nanotube conductive material is characterized by comprising the following components in parts by weight:
2. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the weight ratio of the PC resin to the ABS resin is 9: 1-5: 5.
3. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the PC resin is at least one of bisphenol A polycarbonate, polyester polycarbonate, silicone copolymer polycarbonate, cyclohexane bisphenol A polycarbonate, bisphenol A-organosiloxane copolymer polycarbonate, bisphenol TMC synthesized polycarbonate.
4. the high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the melt mass flow rate of the PC resin is 3-50g/10min at 300 ℃ under a load of 1.2 Kg.
5. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the carbon nanotubes are at least one of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes.
6. The high-flow flame-retardant PC/ABS carbon nanotube conductive material of claim 5, wherein the diameter of the single-walled carbon nanotube, the double-walled carbon nanotube or the multi-walled carbon nanotube is 0.7nm to 7 nm.
7. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the carbon nanotubes with a diameter of 0.7nm-7nm account for at least 50% of the total amount of the carbon nanotubes in parts by weight.
8. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the carbon nanotube has an aspect ratio L/D above 500.
9. the high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the carbon nanotube has an oil absorption value of 300ml/100g or more, a nitrogen adsorption BET specific surface area of 250m 2/g or more, and an iodine adsorption value of 400mg/g or more.
10. the high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the hypophosphite flame retardant is a vinyl aluminum hypophosphite flame retardant.
11. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, wherein the phosphate ester flame retardant is at least one of 1,3 phenylene phosphoric acid (2, 6-tolyl) tetraester, tetraphenyl bisphenol A diphosphate, tetraphenyl resorcinol diphosphate, triphenyl phosphate.
12. the high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, further comprising 0-3 parts of silicone flame retardant.
13. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 12, wherein the silicone flame retardant is at least one of polysilane, polymethoxyphenylsilane, hydroxymethylsilane, cross-linked polydimethylsiloxane.
14. The high flow flame retardant PC/ABS carbon nanotube conductive material of claim 1, further comprising at least one of an anti-drip agent, an antimicrobial agent, an ultraviolet absorber, and a mold release agent.
15. The PC/ABS carbon nanotube conductive material with high flow flame retardancy as claimed in claim 1, wherein the weight average molecular weight of SAN is 5000-.
16. A product produced by molding the high flow flame retardant PC/ABS carbon nanotube conductive material of any one of claims 1 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555354.0A CN110551381A (en) | 2018-06-01 | 2018-06-01 | High-flow flame-retardant PC/ABS carbon nanotube conductive material and product thereof |
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| CN201810555354.0A CN110551381A (en) | 2018-06-01 | 2018-06-01 | High-flow flame-retardant PC/ABS carbon nanotube conductive material and product thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114479400A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | PC/ABS alloy material and preparation method and application thereof |
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| CN114479400A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | PC/ABS alloy material and preparation method and application thereof |
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