Flame-retardant master batch for nylon carrier and preparation method thereof

Abstract

The invention discloses a flame-retardant master batch for a nylon carrier and a preparation method thereof. The flame-retardant master batch comprises the following components in percentage by weight: 9.4-49.6 percent of polycaprolactam powder, 50-90 percent of MCA (Melamine Cyanurate) and 0.4-0.6 percent of antioxidant. The preparation method comprises the following steps: weighting the components according to the weight percent; adding the weighted components into a high-speed mixer, mixing for 20-30 minutes and controlling a temperature in a range of 160-180 DEG C; and cooling the mixed components, adding the cooled components into a hopper of a double-screw extruder, performing fusion reaction, extruding and pelletizing. The flame-retardant master batch for the nylon carrier prepared according to the preparation method is excellent in flame-retardant property; the additive amount of the MCA in nylon is increased; and the production cost is reduced.

Description

[technical field]

[0001] The invention relates to the field of polymer materials, in particular to a nylon carrier flame-retardant masterbatch and a preparation method thereof. [Background technique]

[0002] At present, the halogen-free flame retardant used for halogen-free nylon in the world is mainly MCA (melamine cyanurate). MCA is a nitrogen-based halogen-free flame retardant with excellent performance, and it is also a lubricant for excellent plastics. Compared with phosphorus-containing and halogen-containing flame retardants, MCA has the advantages of low toxicity, high flame-retardant efficiency, strong applicability, and low price. MCA is a non-toxic, harmless and environmentally friendly green product with high temperature resistance and thermal stability. Well, after adding MCA to synthetic resin, you can get a product that does not fade, does not bloom, and has excellent electrical and mechanical properties; MCA is especially suitable for the flame retardancy of...

Examples

Embodiment 1

[0018] The nylon carrier flame retardant masterbatch of this embodiment consists of the following components by weight percentage:

[0019] Polycaprolactam powder 49.6%; MCA 50%; antioxidant 10100.2%; antioxidant 1680.2%.

[0020] Its preparation method is as follows:

[0021] Step 1, take polycaprolactam powder, MCA, antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0022] Step 2. Add the weighed polycaprolactam powder, MCA, antioxidant 1010, and antioxidant 168 into a high-speed mixer and mix for 20 minutes. The temperature is controlled at 160°C;

[0023] Step 3. Cool the mixed material, put the cooled material into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the first zone of the twin-screw extruder The temperature is 180°C, the temperature in the second zone is 190°C, the temperature in the third zone is 210°C, the temperature in the fourth zone is 215°C, ...

Embodiment 2

[0025] The nylon carrier flame retardant masterbatch of this embodiment consists of the following components by weight percentage:

[0026] Polycaprolactam powder 29.6%; MCA 70%; antioxidant 10100.2%; antioxidant 1680.2%.

[0027] Its preparation method is as follows:

[0028] Step 1, take polycaprolactam powder, MCA, antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0029] Step 2. Add the weighed polycaprolactam powder, MCA, antioxidant 1010, and antioxidant 168 into a high-speed mixer and mix for 30 minutes. The temperature is controlled at 180°C;

[0030] Step 3. Cool the mixed material, put the cooled material into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the first zone of the twin-screw extruder The temperature is 190°C, the temperature in the second zone is 220°C, the temperature in the third zone is 220°C, the temperature in the fourth zone is 220°C, ...

Embodiment 3

[0032] The nylon carrier flame retardant masterbatch of this embodiment consists of the following components by weight percentage:

[0033] Polycaprolactam powder 19.4%; MCA 80%; antioxidant 10100.3%; antioxidant 1680.3%.

[0034] Its preparation method is as follows:

[0035] Step 1, take polycaprolactam powder, MCA, antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0036] Step 2. Add the weighed polycaprolactam powder, MCA, antioxidant 1010, and antioxidant 168 into a high-speed mixer and mix for 25 minutes. The temperature is controlled at 170°C;

[0037] Step 3. Cool the mixed material, put the cooled material into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the first zone of the twin-screw extruder The temperature is 185°C, the temperature in the second zone is 200°C, the temperature in the third zone is 215°C, the temperature in the fourth zone is 215°C, ...

[technical field]

[0001] The invention relates to the field of polymer materials, in particular to a nylon carrier flame-retardant masterbatch and a preparation method thereof. [Background technique]

[0002] At present, the halogen-free flame retardant used for halogen-free nylon in the world is mainly MCA (melamine cyanurate). MCA is a nitrogen-based halogen-free flame retardant with excellent performance, and it is also a lubricant for excellent plastics. Compared with phosphorus-containing and halogen-containing flame retardants, MCA has the advantages of low toxicity, high flame-retardant efficiency, strong applicability, and low price. MCA is a non-toxic, harmless and environmentally friendly green product with high temperature resistance and thermal stability. Well, after adding MCA to synthetic resin, you can get a product that does not fade, does not bloom, and has excellent electrical and mechanical properties; MCA is especially suitable for the flame retardancy of...

Examples

Embodiment 1

[0018] The nylon carrier flame retardant masterbatch of this embodiment consists of the following components by weight percentage:

[0019] Polycaprolactam powder 49.6%; MCA 50%; antioxidant 10100.2%; antioxidant 1680.2%.

[0020] Its preparation method is as follows:

[0021] Step 1, take polycaprolactam powder, MCA, antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0022] Step 2. Add the weighed polycaprolactam powder, MCA, antioxidant 1010, and antioxidant 168 into a high-speed mixer and mix for 20 minutes. The temperature is controlled at 160°C;

[0023] Step 3. Cool the mixed material, put the cooled material into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the first zone of the twin-screw extruder The temperature is 180°C, the temperature in the second zone is 190°C, the temperature in the third zone is 210°C, the temperature in the fourth zone is 215°C, ...

Embodiment 2

[0025] The nylon carrier flame retardant masterbatch of this embodiment consists of the following components by weight percentage:

[0026] Polycaprolactam powder 29.6%; MCA 70%; antioxidant 10100.2%; antioxidant 1680.2%.

[0027] Its preparation method is as follows:

[0028] Step 1, take polycaprolactam powder, MCA, antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0029] Step 2. Add the weighed polycaprolactam powder, MCA, antioxidant 1010, and antioxidant 168 into a high-speed mixer and mix for 30 minutes. The temperature is controlled at 180°C;

[0030] Step 3. Cool the mixed material, put the cooled material into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the first zone of the twin-screw extruder The temperature is 190°C, the temperature in the second zone is 220°C, the temperature in the third zone is 220°C, the temperature in the fourth zone is 220°C, ...

Embodiment 3

[0032] The nylon carrier flame retardant masterbatch of this embodiment consists of the following components by weight percentage:

[0033] Polycaprolactam powder 19.4%; MCA 80%; antioxidant 10100.3%; antioxidant 1680.3%.

[0034] Its preparation method is as follows:

[0035] Step 1, take polycaprolactam powder, MCA, antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0036] Step 2. Add the weighed polycaprolactam powder, MCA, antioxidant 1010, and antioxidant 168 into a high-speed mixer and mix for 25 minutes. The temperature is controlled at 170°C;

[0037] Step 3. Cool the mixed material, put the cooled material into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the first zone of the twin-screw extruder The temperature is 185°C, the temperature in the second zone is 200°C, the temperature in the third zone is 215°C, the temperature in the fourth zone is 215°C, ...