Matt, slow-burning and low-odor PA6 / ABS (polyamide 6 / acrylonitrile-butadiene-styrene) material and preparation method thereof

Abstract

The invention belongs to the technical field of plastic modification, and relates to a matte, slow-burning and low-odor PA6 / ABS material and a preparation method thereof. The preparation method comprises the following steps: weighing the PA6 resin, the bulk polymerization ABS resin, the flexibilizer and the compatilizer, putting into a stirring pot, adding the wetting agent into the stirring pot, and uniformly stirring; adding a processing aid and coconut shell activated carbon powder into a stirring pot, uniformly stirring at a high speed, and adding the mixed material into a main feeding weightlessness scale; a water injection pump is installed at the position of the third section of the barrel of the extruder, the discharging amount of the weightlessness scale is set to be 29.85 kg / h, the length-diameter ratio of the equipment is 44: 1, double-vacuum waste gas extraction is conducted, the vacuum positions are arranged on the seventh section of the barrel and the tenth section of the barrel respectively, the rotating speed of a screw of a main machine is set to be 450 r / min, auxiliary equipment is started, and granulation production is conducted. According to the method, the coconut shell activated carbon powder is matched with the flexibilizer and the compatilizer, so that the material has the matte, slow-burning and low-odor functions.

Claims

1. A matte, slow-burning, low-odor PA6 / ABS material, characterized in that: The composition is based on the following raw materials in parts by mass: PA6 resin: 60-75 parts, ABS resin: 15 parts, Activated carbon: 0-5 parts, Toughening agent: 5-15 parts, Compatibilizer: 3 parts, Water: 0.5 parts, Processing aid package: 1 portion, Wetting agent: 0.5 parts.

2. A matte, slow-burning, low-odor PA6 / ABS material according to claim 1, characterized in that: The PA6 resin is at least one of 2.0 viscosity PA6 resin, 2.4 viscosity PA6 resin, and 2.75 viscosity PA6 resin; the ABS resin is made by bulk polymerization, and the MFR of the product is 10-25g / 10min.

3. The matte, slow-burning, low-odor PA6 / ABS material according to claim 1, characterized in that: The activated carbon is made from Indonesian coconut shells and is a 2000 mesh powder.

4. The matte, slow-burning, low-odor PA6 / ABS material according to claim 1, characterized in that: The toughening agent is at least one of POE and EPDM, the MFR of POE is 10-20 g / 10 min, and the MFR of EPDM is 10-20 g / 10 min.

5. The matte, slow-burning, low-odor PA6 / ABS material according to claim 1, characterized in that: The compatibilizer is at least one of ABS grafted maleic anhydride and AS grafted maleic anhydride; the water is at least one of deionized water and distilled water; the wetting agent is at least one of white oil and diffusion oil.

6. The matte, slow-burning, low-odor PA6 / ABS material according to claim 1, characterized in that: The processing aid package includes an antioxidant and a lubricant; the antioxidant includes a primary antioxidant and a secondary antioxidant, the primary antioxidant and the secondary antioxidant are compounded in a ratio of 1:2, the primary antioxidant is at least one of 1010, 1098, 1076, 3114, and 2246, and the secondary antioxidant is at least one of 168, 618, and 626; the lubricant is at least one of EBS, PETS, stearic acid, stearate, and PE wax.

7. The method for preparing a matte, slow-burning, low-odor PA6 / ABS material according to claim 1, characterized in that: The following steps are involved: Weigh PA6 resin, ABS resin, toughening agent and compatibilizer and put them into a stirring pot, add a wetting agent into the stirring pot and stir evenly; add a processing aid package and activated carbon into the stirring pot, stir evenly at high speed, and then add the mixed materials into the main feeding loss-in-weight scale; install a water injection pump at the third extruder barrel, inject water, set the feed rate of the loss-in-weight scale to 29.85 kg / h, the equipment adopts a 44:1 aspect ratio, double vacuum to extract exhaust gas, the vacuum position is set at the seventh and tenth barrels respectively, set the main engine screw speed to 450 rpm, turn on the auxiliary equipment, and carry out granulation production.

8. The method for preparing a matte, slow-burning, low-odor PA6 / ABS material according to claim 7, characterized in that: The specific steps include: A. Select PA6 resin, bulk polymerized ABS resin, toughening agent and compatibilizer, put them into a stirring pot, add wetting agent into the stirring pot, stir for 5 minutes, and stir evenly; B. Add the processing aid package and activated carbon to the stirring pot and stir at 520 RPM for 5 minutes to completely coat the powder on the outer surface of the particles; C. Add the mixed materials into the main feed loss-in-weight scale; D. Set the feed rate of the loss-in-weight scale to 29.85 kg / h and the screw speed to 450 rpm; E. Turn on the main machine and start feeding. When the material has flowed out of the die, turn on the water injection pump of the third extruder barrel. The water injection volume is 0.5 parts and the water injection speed is 0.15 kg / hour. Turn on the vacuum system. The vacuum degree reaches below -0.08M. Turn on the auxiliary equipment and start granulation production.

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