CN114316555A - Fatigue-resistant flame-retardant PC/ABS alloy and preparation method thereof - Google Patents
Fatigue-resistant flame-retardant PC/ABS alloy and preparation method thereof Download PDFInfo
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- CN114316555A CN114316555A CN202111470783.6A CN202111470783A CN114316555A CN 114316555 A CN114316555 A CN 114316555A CN 202111470783 A CN202111470783 A CN 202111470783A CN 114316555 A CN114316555 A CN 114316555A
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Abstract
The invention provides a fatigue-resistant flame-retardant PC/ABS alloy and a preparation method thereof, wherein the raw materials of the alloy mainly comprise PC resin, ABS, a flame retardant, a toughening agent and an anti-dripping agent, the PC resin comprises extrusion-grade and blow-molding-grade PC resin, the molecular weight of the extrusion-grade and blow-molding-grade PC resin is large, the molecular chain is long, more molecular chain entanglement points are formed, and the molecular chain is not easily damaged when the PC/ABS alloy is subjected to external force, so that higher fatigue resistance is provided; the processability of the PC resin in extrusion grade and blow molding grade is poor, but the flowability of ABS is excellent, and the phosphorus flame retardant is a plasticizing flow modifier which can make up the defect of poor flowability of PC in extrusion grade and blow molding grade together with ABS.
Description
Technical Field
The invention relates to the technical field of chemical synthesis, in particular to a fatigue-resistant flame-retardant PC/ABS alloy and a preparation method thereof.
Background
Polycarbonate (PC for short) has excellent mechanical property, optical property and flame retardant property, and is widely applied to the fields of building materials, automobiles, electronic and electric appliances, optics, office supplies, medical appliances, aerospace, packaging and the like. Polycarbonate has the characteristics of excellent impact resistance, high transparency, high strength, creep resistance, good heat resistance, dimensional stability and the like, but because the rigidity of a PC molecular chain is high, the melt viscosity is high, the fatigue resistance is poor, and stress cracking is easy to generate. ABS is a terpolymer of acrylonitrile, butadiene and styrene, and has the characteristics of excellent processing performance, strong tinting strength, good surface gloss, good dimensional stability, general heat resistance, good electrical insulation, poor flame retardance and the like. The phosphorus flame retardant not only can endow PC/ABS with flame retardance, but also can improve the fluidity of PC/ABS and reduce the cracking risk of products caused by overlarge internal stress, the battery pack shell of the electric tool is mostly made of modified flame-retardant PC/ABS alloy materials, the PC/ABS alloy fuses the superior performances of PC and ABS, the heat-resistant dimensional stability of ABS is improved, the thickness sensitivity of PC is improved, the processing performance is improved, the cost is reduced, and the phosphorus flame retardant can be widely applied to the fields of battery pack shells and the like.
The application of PC/ABS on products such as battery pack shells of electric tools, new energy battery shells and the like requires certain flame retardance and long service life, high-frequency repeated vibration is generated in the using process of the electric tools, and the speed change of new energy automobiles is frequent in the driving process, so that the materials are required to have higher fatigue resistance to meet the practical use of the products.
At present, no relevant patent report on the fatigue resistance research of the flame-retardant PC/ABS material is found. Therefore, it is necessary to develop a flame-retardant PC/ABS alloy material which has flame retardancy and can simultaneously achieve the fatigue resistance of the product.
Disclosure of Invention
In view of the above, the invention aims to provide a fatigue-resistant flame-retardant PC/ABS alloy and a preparation method thereof. In particular to a fatigue resistant flame retardant PC/ABS alloy which has flame retardance, can also give consideration to the fatigue resistance of products and is easy to process and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme.
The extrusion grade PC resin and the blow molding grade PC resin were both synthesized by a phosgene process.
The melt flow rate of the extrusion grade PC resin synthesized by the phosgene method is 5-8g/10min, and the temperature is 300 ℃ is 1.2 kg.
The melt flow rate of the blow molding grade PC resin synthesized by the phosgene method is 2-5g/10min, and the temperature is 300 ℃ by 1.2 kg.
The flame retardant comprises a phosphorus flame retardant.
The phosphorus flame retardant comprises one or more of BDP, RDP, TPP and phosphazene. Not all flame retardants can improve the fluidity, and the phosphorus flame retardant selected by the invention can improve both the flame retardance and the fluidity.
The anti-dripping agent is acrylonitrile-butadiene coated polytetrafluoroethylene or acrylate-styrene coated polytetrafluoroethylene, wherein the content of the polytetrafluoroethylene in the acrylonitrile-butadiene coated polytetrafluoroethylene or acrylate-styrene coated polytetrafluoroethylene is 40-60 wt%.
The antioxidant is selected from one or more of antioxidant 1076, antioxidant 168, antioxidant 245 and antioxidant 1010.
The toughening agent comprises one or more of acrylic acid-silicon rubber toughening agent, methyl methacrylate/butadiene/styrene copolymer, methyl methacrylate/acrylic polymer, acrylic toughening agent, ethylene-butyl acrylate and ethylene-acrylate-glycidyl methacrylate terpolymer.
The lubricant comprises one or more of pentaerythritol ester, silicone powder and ethylene bis stearamide.
The invention also provides a preparation method of the fatigue-resistant flame-retardant PC/ABS alloy, which comprises the following steps:
the raw materials are placed in a high-speed mixer according to a formula and stirred, the mixture is fed into a double-screw extruder through a metering device after being uniformly mixed, the temperature of the double-screw extruder is controlled to be 230-260 ℃, the materials are melted and compounded under the conveying, shearing and mixing of screws, the melting extrusion is carried out at the rotating speed of 400-600-fold screws, and the materials are cooled and granulated to obtain the fatigue-resistant flame-retardant PC/ABS alloy.
The weight-average relative molecular mass of the acrylonitrile-butadiene-styrene (ABS) is 100000-500000g/mol, the content of butadiene rubber is 40-60%, and the number-average particle diameter of the rubber is 0.2-1.0 um.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with injection-molding-grade PC resin (the flow rate is generally 10-20g/10min), the blow-molding-grade and extrusion-grade PC resin has larger relative molecular weight and higher branching degree, a plurality of molecular chains are crossed to form a structure similar to a net structure, the structure is not easy to be damaged by external force, and the fatigue resistance of the structure is obviously improved; and the blowing-grade and extrusion-grade PC resins adopted by the invention are synthesized by a phosgene method, so that the molecular weight distribution is narrower, the content of terminal hydroxyl groups is less, and the thermal stability is better.
2. Although the processability of extrusion-grade and blow-molding-grade PC resin is poor, the flowability of ABS is excellent, and the phosphorus flame retardant is also a plasticizing flow modifier which can make up the defect of poor flowability of extrusion-grade or blow-molding-grade PC together with ABS.
Detailed Description
The present invention will be described in detail with reference to examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be apparent to those skilled in the art that several modifications and improvements can be made without departing from the inventive concept. All falling within the scope of the present invention.
In the following examples and comparative examples:
extrusion grade PC resin (phosgene process) was: imperial L1250 WP;
the blow-molding grade PC resin (phosgene process) was: wanhua A1030;
the blow molding grade PC resin (transesterification process) was: mitsubishi 7027 BF;
the injection-grade PC resin (transesterification process) was: PC 1100 for happy days;
the flow rate of the melt of the extrusion-grade PC resin synthesized by the phosgene method is 5-8g/10min, and the temperature is 300 ℃ is 1.2 kg;
the flow rate of the blowing-grade PC resin melt synthesized by the phosgene method is 2-5g/10min, and the temperature is 300 ℃ is 1.2 kg;
ABS is: a high bridge 8391;
the toughening agent is acrylic acid-silicon rubber toughening agent copolymer;
the anti-dripping agent is: entropy energy 3306 PF;
the antioxidant is antioxidant 1076 and antioxidant 168;
the lubricant is pentaerythritol esters.
Examples 1 to 4 and comparative examples 1 to 6
The alloys of examples 1-4 and comparative examples 1-6 were prepared with the compositions and amounts shown in Table 1, respectively.
TABLE 1 EXAMPLES 1 TO 4 AND COMPARATIVE EXAMPLES 1 TO 6 each ingredient and ingredient content (in parts by weight)
The alloys of the above examples and comparative examples were prepared by the following methods:
the fatigue resistant flame retardant PC/ABS alloy in examples 1-2 was prepared by the following method:
the raw materials are placed in a high-speed mixer according to the formula shown in the table 1 and stirred, the mixture is fed into a double-screw extruder through a metering device after being uniformly mixed, the temperature of the double-screw extruder is controlled to be 230 ℃, the materials are melted and compounded under the conveying, shearing and mixing of screws, the melting extrusion is carried out at the rotating speed of 400r/min of the screws, and the PC/ABS alloy composition with fatigue resistance and flame retardance is obtained after cooling granulation.
The fatigue resistant flame retardant PC/ABS alloys of examples 3-4 were prepared by the following method:
the raw materials are placed in a high-speed mixer according to the formula and stirred, the mixture is fed into a double-screw extruder through a metering device after being uniformly mixed, the temperature of the double-screw extruder is controlled to be 260 ℃, the materials are melted and compounded under the conveying, shearing and mixing of screws, the melting extrusion is carried out under the condition of the rotating speed of the screws being 600r/min, and the materials are cooled and granulated, so that the fatigue-resistant flame-retardant PC/ABS alloy composition is obtained.
The alloys of comparative examples 1-6 were prepared using the method of example 1.
Detecting the application performance:
the above examples and comparative examples were tested for performance according to the criteria of Table 2:
TABLE 2
Remarking: specimen fatigue test1: the fatigue performance of the material was judged by the number of times the sample bar broke using laboratory self-made fatigue equipment using tensile sample bars of ASTM standards with a holding power value of 103N.
And the properties of the obtained examples and comparative examples are shown in Table 3:
table 3 results of various property tests
The performance test results show that:
through comparison tests, the content of the blow-molding-grade PC resin in the resin composition is 30-62 parts, the content of the extruder PC resin in the resin composition is 20-52 parts, the blow-molding-grade PC resin and the extrusion-grade PC resin are synthesized by a phosgene method, and when a phosphorus flame retardant is adopted, the prepared alloy has the fatigue resistance and the flame retardance and has better processability and thermal stability.
The results of comparative example 1 show that the products obtained, all with the blown-grade PC resin, although being better in fatigue resistance, have a reduced processability.
The results of comparative example 2 show that, in the case of all extrusion-grade PC resins, the resulting products, although having better processability, have relatively reduced fatigue resistance.
The comparison shows that the phosphorus flame retardant has obviously better processing performance (high fluidity) and better fatigue resistance than the system using the bromine flame retardant.
The test result shows that the melt flow rate of the embodiment reaches more than 7g/10min (260 ℃ C. 5kg), and the fatigue resistance test result reaches more than 29500 times (under the fatigue resistance test condition of the invention), so that the product prepared by the invention has better processability and fatigue resistance.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. The fatigue-resistant flame-retardant PC/ABS alloy is characterized by comprising the following raw materials in parts by weight:
2. the fatigue resistant flame retardant PC/ABS alloy of claim 1 wherein the extrusion grade PC resin and the blow-molding grade PC resin are both synthesized by phosgene process.
3. The fatigue resistant flame retardant PC/ABS alloy of claim 2 wherein the extrusion grade PC resin synthesized by the phosgene process has a melt flow rate of 5-8g/10min at 300 ℃ 1.2 kg.
4. The fatigue resistant flame retardant PC/ABS alloy of claim 2 wherein the melt flow rate of the light vapor synthesized blow-molded grade PC resin is 2-5g/10min at 300℃ 1.2 kg.
5. The fatigue resistant flame retardant PC/ABS alloy of claim 1 wherein the flame retardant comprises a phosphorus based flame retardant comprising one or more of BDP, RDP, TPP, phosphazene.
6. The fatigue resistant flame retardant PC/ABS alloy of claim 1 wherein the anti-drip agent is acrylonitrile-butadiene coated polytetrafluoroethylene or acrylate-styrene coated polytetrafluoroethylene; wherein the content of the polytetrafluoroethylene is 40 to 60 weight percent.
7. The fatigue resistant flame retardant PC/ABS alloy according to claim 1, wherein the antioxidant is selected from one or more of antioxidant 1076, antioxidant 168, antioxidant 245 and antioxidant 1010.
8. The fatigue resistant flame retardant PC/ABS alloy of claim 1, wherein the toughening agent comprises one or more of acrylic acid-silicone rubber toughening agent, methyl methacrylate-butadiene-styrene copolymer, methyl methacrylate-acrylic polymer, acrylic toughening agent, ethylene-butyl acrylate, ethylene-acrylate-glycidyl methacrylate terpolymer.
9. The fatigue resistant flame retardant PC/ABS alloy of claim 1, wherein the lubricant comprises one or more of pentaerythritol ester, silicone powder, ethylene bis stearamide.
10. A method for preparing a fatigue resistant flame retardant PC/ABS alloy according to any of claims 1-9, characterized by the steps of:
the raw materials are placed in a high-speed mixer according to a formula and stirred, the mixture is fed into a double-screw extruder through a metering device after being uniformly mixed, the temperature of the double-screw extruder is controlled to be 230-260 ℃, the materials are melted and compounded under the conveying, shearing and mixing of screws, the melting extrusion is carried out at the rotating speed of 600r/min of the screws 400-plus-material, and the materials are cooled and granulated to obtain the fatigue-resistant flame-retardant PC/ABS alloy.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072968A (en) * | 2014-07-10 | 2014-10-01 | 上海锦湖日丽塑料有限公司 | High-fatigue-resistance PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof |
| CN110256829A (en) * | 2019-05-27 | 2019-09-20 | 中广核俊尔(浙江)新材料有限公司 | A kind of high flowing polycarbonate compositions and its preparation method and application |
| CN111117184A (en) * | 2019-12-17 | 2020-05-08 | 中广核俊尔(浙江)新材料有限公司 | High-temperature and high-humidity resistant flame-retardant PC plastic and preparation method and application thereof |
| CN113583423A (en) * | 2021-08-17 | 2021-11-02 | 广州仕天材料科技有限公司 | High-fluidity flame-retardant PC/ABS composite material and preparation method thereof |
-
2021
- 2021-12-03 CN CN202111470783.6A patent/CN114316555A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072968A (en) * | 2014-07-10 | 2014-10-01 | 上海锦湖日丽塑料有限公司 | High-fatigue-resistance PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof |
| CN110256829A (en) * | 2019-05-27 | 2019-09-20 | 中广核俊尔(浙江)新材料有限公司 | A kind of high flowing polycarbonate compositions and its preparation method and application |
| CN111117184A (en) * | 2019-12-17 | 2020-05-08 | 中广核俊尔(浙江)新材料有限公司 | High-temperature and high-humidity resistant flame-retardant PC plastic and preparation method and application thereof |
| CN113583423A (en) * | 2021-08-17 | 2021-11-02 | 广州仕天材料科技有限公司 | High-fluidity flame-retardant PC/ABS composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘瑞雪: "《塑料工程手册》", 河南大学出版社 * |
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