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High-CTI flame-retardant polycarbonate alloy material, preparation method and applications thereof
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A technology for flame-retardant polycarbonate and alloy materials, which is applied in the fields of polymer molding and polymer blending, and can solve the problems of limited use and low heat resistance of alloy materials.
Active Publication Date: 2020-05-19
WANHUA CHEM GRP CO LTD +1
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Problems solved by technology
The flame retardant system of this patent does not involve synergistic flame retardants such as antimonytrioxide. The flame retardant performance of the alloy material, the glow wire ignition temperature and the tracking index have been improved in a balanced manner. At the same time, it has good mechanical properties and good appearance. Good, good processing and molding, etc., but the patent uses brominated flame retardants, so the use is limited. At the same time, due to the addition of PET, the heat resistance of the alloy material is low
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Embodiment 1
[0044] (1) Weigh 9.5kg for A1105, 0.1kg for S100, 0.04kg for nano-calciumcarbonate, 0.04kg for X-52-875, 0.02kg for FR2025, 0.3kg for SMA2021, 0.03g for SN3300B3, and 0.02kg, PETS is 0.03kg;
[0045](2) Mix the weighed material in the high mixer for 5 minutes before discharging;
[0046] (3) Put the material into the twin-screw extruder, and set the temperature of each section of the extruder as follows (from the feeding port to the machine head): 80°C, 270°C, 320°C, 320°C, 320°C, 320°C, 320°C, 320°C, 310°C, 310°C. The die temperature is 310°C, the extrusion speed is 100RPM, and the modified material is water-cooled and granulated after being extruded from the die.
Embodiment 2
[0048] (1) Weigh 9kg for A1105, 0.5kg for S100, 0.072kg for nano-calciumcarbonate, 0.008kg for X-52-875, 0.02kg for FR2025, 0.4kg for SMA2021, 0.03g for SN3300B3, and 0.02kg for antioxidant kg, PETS is 0.03kg;
[0049] (2) Mix the weighed material in the high mixer for 5 minutes before discharging;
[0050] (3) Put the material into the twin-screw extruder, and set the temperature of each section of the extruder as follows (from the feeding port to the machine head): 80°C, 270°C, 300°C, 300°C, 300°C, 300°C, 300°C, 300°C, 290°C, 290°C. The temperature of the die is 290°C, the extrusion speed is 300RPM, and the modified material is extruded from the die and granulated by water cooling.
Embodiment 3
[0052] (1) Weigh 9kg for A1105, 0.5kg for S100, 0.005kg for nano calciumcarbonate, 0.005kg for X-52-875, 0.02kg for FR2025, 0.47kg for SMA2021, 0.03g for SN3300B3, and 0.02kg for antioxidant kg, PETS is 0.03kg;
[0053] (2) Mix the weighed material in the high mixer for 5 minutes before discharging;
[0054] (3) Put the material into the twin-screw extruder, and set the temperature of each section of the extruder as follows (from the feeding port to the machine head): 80°C, 270°C, 300°C, 300°C, 300°C, 300°C, 300°C, 300°C, 290°C, 290°C. The temperature of the die is 290°C, the extrusion speed is 300RPM, and the modified material is extruded from the die and granulated by water cooling.
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Abstract
The invention discloses a high-CTI flame-retardant polycarbonatealloy material, a preparation method and applications thereof. The high-CTI flame-retardant polycarbonatealloy material is prepared from the following raw materials in percentage by weight: 55-95% of polycarbonate, 1-40% of syndiotactic polystyrene, 0.01-5% of a nucleating agent, 1-10% of a toughening agent and 0.05-2% of a flame retardant, wherein the nucleating agent is one or a plurality of materials selected from nano CaCO3, nano titanium dioxide, nano clay, kaolin, micapowder, carbon nanotubes, organic silicon rubber, talcum powder and magnesium-aluminum hydrotalcite. The nucleating agent system can achieve a synergistic effect, promote syndiotactic polystyrenecrystallization and change of a crystal form structure, further endow the polycarbonate alloy material with a high CTI value, and maintains the flame retardant property and the mechanical property of the polycarbonate alloy material. The high-CTI flame-retardant polycarbonate alloy material is applicable to the fields of household appliances, wall switches and charging piles.
Description
technical field [0001] The invention relates to a high CTI flame-retardant polycarbonate alloy material and its preparation method and application, and belongs to the fields of polymer blending and polymer molding processing. Background technique [0002] With the improvement of living standards, users pay more and more attention to the performance and safety performance of home appliances. They not only require beautiful appearance and excellent performance, but also require higher safety performance of home appliances. For example, for unattended white goods, in addition to meeting the flame retardant performance, it is also required to have high electrical performance, and the relative tracking index (CTI) is required to be ≥ 300V. [0003] Polycarbonate (PC) materials are used as electrical materials, with excellent tensile strength, impact strength, dimensional stability and thermal properties, and are widely used. In order to meet the flame retardant requirements, fla...
Claims
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Application Information
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