Halogen-free flame-retardant and cold-resistant PC/ABS (Poly Carbonate/Acrylonitrile Butadiene Styrene) material and preparation method thereof
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A technology of ABS material and ABS resin, which is applied in the field of engineering plastic modification and polymer materials, can solve the problems of poor anti-oxidation ability and anti-ultraviolet radiation ability, short service life of materials, poor impact strength ability, etc., to achieve Excellent weather resistance and low temperature impact performance, good resistance to ultraviolet radiation, and the effect of improving impact performance
Inactive Publication Date: 2012-06-27
SHENZHEN KEJU NEW MATERIAL
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Problems solved by technology
The current PC / ABS alloy has the following disadvantages, first: the compatibility between PC and ABS is not good, resulting in poor overall mechanical properties of the alloy; second: the flame retardancy is not good, and the content of halogen elements is too high , has a certain pollution effect on the environment; third: poor impact strength, especially at low temperature, its impact toughness will be sharply reduced, which will easily lead to material failure; fourth: anti-oxidation ability and anti-ultraviolet radiation ability Poor, the service life of the material is not high
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Embodiment 1
[0039] The weight ratio of PC 60.0%, ABS 25.0%, toluene xylyl phosphate 6.0%, PDMS 3.0%, MBS4.0%, toughening agent 4.0%, lubricant 0.5%, antioxidant 1.0%, anti-ultraviolet agent 0.5% Stir in a mixing barrel for 5 minutes, and then melt, extrude and granulate through a twin-screw extruder. Its processing technology is as follows: Twin-screw extruder one zone 220-230°C, two zone 235-240°C, three zone 235-240°C, fourth zone 235-240°C, five zone 240-250°C, six zone 245-250°C ℃, seven zone 240-245 ℃, eight zone 235-240 ℃; screw speed 300-450 rpm.
Embodiment 2
[0041] Mix PC 60.0%, ABS 25.0%, MPP 8.0%, PDPS 2.0%, MBS 4.0%, toughening agent 4.0%, lubricant 0.5%, antioxidant 1.0%, anti-ultraviolet agent 0.5% in the mixing tank 5 minutes, and then melted and extruded to granulate through a twin-screw extruder. Its processing technology is as follows: Twin-screw extruder one zone 220-230°C, two zone 235-240°C, three zone 235-240°C, fourth zone 235-240°C, five zone 240-250°C, six zone 245-250°C ℃, seven zone 240-245 ℃, eight zone 235-240 ℃; screw speed 300-450 rpm.
Embodiment 3
[0043] Stir the weight ratio PC 60.0%, ABS 25.0%, APP 8.0%, PDPDMS 2.0%, MBS 4.0%, toughening agent 4.0%, lubricant 0.5%, antioxidant 1.0%, anti-ultraviolet agent 0.5% in the mixing tank 5 minutes, and then melted and extruded to granulate through a twin-screw extruder. Its processing technology is as follows: Twin-screw extruder one zone 220-230°C, two zone 235-240°C, three zone 235-240°C, fourth zone 235-240°C, five zone 240-250°C, six zone 245-250°C ℃, seven zone 240-245℃, eight zone 235-240℃; screw speed 300-450 rpm.
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Abstract
The invention discloses a halogen-free flame-retardant and cold-resistant PC/ABS (Poly Carbonate/Acrylonitrile Butadiene Styrene) material and a preparation method thereof. The halogen-free flame-retardant and cold-resistant PC/ABS material mainly comprises components of PC and ABS and further comprises a silicon fire retardant, a phosphorus fire retardant, an anti-dripping agent, a compatilizer, a flexibilizer, a lubricant, an antioxidant, and an anti-ultraviolet agent. A preparation process is a twin-screw melting extrusion pelletizing process. According to the preparation method disclosed by the invention, the silicon fire retardant and the phosphorus fire retardant are composited so that the fire resistance 1.2 mm of the obtained PC-ABS alloy material can meet the UL94V-0 class requirement in the United States. The compatilizer MBS (Methyl methacrylate-Butadiene-Styrene) not only enables the PC and the ABS to be better dissolved but also can be used for increasing the compatibility between the silicon fire retardant and a substrate. Therefore, not only can the impact property of the alloy be improved but also the flame retardant efficiency can be effectively improved. The alloy material has the good low-temperature impact property due to the flexibilizer. The silicon fire retardant has a fire retardant synergy effect and further has a smoke suppression effect, so that the fire resistance 1.2 mm of the obtained PC-ABS alloy material can meet the UL94V-0 class requirement in the United States.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to the technical field of modification of engineering plastics, in particular to a halogen-free flame-retardant and cold-resistant PC / ABS material with excellent performance and a preparation method thereof. Background technique [0002] PC is an engineering plastic with excellent performance. It has excellent mechanical properties, dimensional stability, heat resistance and cold resistance. advantage. On the one hand, it can improve the heat resistance, impact resistance and tensile properties of ABS, making ABS used in high-end fields; on the other hand, it can reduce the melt viscosity of PC, improve the flow of PC, and improve its processing performance. Reduce the internal stress of the product, reduce the sensitivity of impact strength to notch and thickness, so that PC can be used in the manufacture of thin-walled long-process products. In recent years, PC / ABS alloys have b...
Claims
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