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A kind of low smoke density pc/abs polymer composite material and preparation method thereof
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A composite material and smoke density technology, which is applied in the field of low smoke density PC/ABS polymer composite materials and its preparation, can solve the problems of low smoke density, low toughness and rigidity, and achieves low smoke density, low production cost and simple processing technology. Effect
Active Publication Date: 2017-11-10
SHANGHAI OUBOER PLASTIC
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Abstract
Description
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Problems solved by technology
[0007] However, at present, there is no PC / ABS polymer composite material with low smoke density, low smoke density, good toughness and rigidity, and its preparation method has simple processing technology and high product molding precision.
Method used
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Effect test
Embodiment 1
[0033] A kind of preparation method of low smoke density PC / ABS polymer composite material, it has the following steps:
[0034] (1) By weight percentage, after accurately weighing PC 50%, ABS 33.5%, HRG 181 7%, S-2001 5%, zinc borate 4%, 1010 0.1%, 168 0.1% and EBS 0.3%, after Pre-dried at 85-90°C;
[0035] (2) Put the dried material above into a high-speed mixer for dry mixing for 1 to 4 minutes, then put the mixed material into a twin-screw extruder, melt and extrude through the twin-screw extruder, cool, dry, and pelletize to obtain the finished product .
[0036] The parameters of each section of the low-smoke density PC / ABS polymer composite material on the twin-screw extruder are set as follows: the temperature of the first zone is 200°C, the temperature of the second zone is 250°C, the temperature of the third zone is 250°C, the temperature of the fourth zone is 260°C, and the temperature of the fifth zone is 260°C. The temperature is 260°C, the temperature in the si...
Embodiment 2
[0038] A kind of preparation method of low smoke density PC / ABS polymer composite material, it has the following steps:
[0039] (1) By weight percentage, after accurately weighing PC 70%, ABS 13.5%, HRG 181 7%, S-2001 5%, zinc borate 4%, 1010 0.1%, 168 0.1% and EBS 0.3%, after Pre-dried at 85-90°C;
[0040] (2) Put the dried material above into a high-speed mixer for dry mixing for 1 to 4 minutes, then put the mixed material into a twin-screw extruder, melt and extrude through the twin-screw extruder, cool, dry, and pelletize to obtain the finished product .
Embodiment 3
[0042] A kind of preparation method of low smoke density PC / ABS polymer composite material, it has the following steps:
[0043] (1) By weight percentage, after accurately weighing PC 73.5%, ABS 2%, HRG 181 5%, S-2001 5%, zinc borate 4%, 1010 0.1%, 168 0.1% and EBS 0.3%, after Pre-dried at 85-90°C;
[0044] (2) Add the above-mentioned dried materials into the high-speed mixer for dry mixing for 1 to 4 minutes, then feed the mixed materials into the twin-screw extruder through the main feeding port, and add BDP through the side feeding port at a ratio of 10%. Added by an oil pump, melted and extruded by a twin-screw extruder, cooled, dried, and pelletized to obtain the finished product.
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Abstract
The invention relates to a low-smoke density PC / ABS polymer composite and a preparation method thereof. The PC / ABS polymer composite, which is low in smoke density, relatively high in mechanical property, and simple in processing technology, is obtained by adding a silicon-acrylic flexibilizer, zinc borate, ABS high glue powder, antioxidants and a lubricant into base materials which are PC and ABS. The preparation method is also suitable for halogen-free flame-retardant PC / ABS polymer composites, and comprises the following steps: adding various raw materials in a high-speed mixer for mixing, and putting the obtained mixture into a double-screw extruder for pelletization through melt extrusion. The PC / ABS polymer composite is relatively low in production cost, and relatively good in market prospect, and can be used in the fields of automobiles, high-speed rails and household appliances, in particular to inner trims of school buses.
Description
technical field [0001] The invention belongs to the field of polymer materials, and relates to a low-smoke density PC / ABS polymer composite material and a preparation method thereof. Background technique [0002] According to the national standard GB24407-2012, the smoke density level of school bus interior materials is required to be less than 75. However, the smoke density level of general-purpose PC / ABS alloy materials is above 80. How to reduce the smoke density of PC / ABS alloy materials has become a research hotspot in the field of engineering plastics. [0003] Patent CN102863770A adds nano-hydrotalcite to PC / ABS alloy, so that when the prepared PC / ABS alloy material is heated and burned, the hydroxyl group of the combined hydration layer and interlayer ions of the nano-hydrotalcite component can be released in the form of water and carbon dioxide. To flame retardancy and smoke suppression, its smoke density level is significantly reduced, less than 75, in line with n...
Claims
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Application Information
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