A kind of red phosphorus flame-retardant nylon composite material and its preparation method and the determination method of phosphorus precipitation amount in it

Abstract

The invention discloses a red phosphorus flame-retardant nylon composite material, which comprises the following components by weight: nylon resin: 40-80 parts; reinforcing component: 10-50 parts; red phosphorus flame retardant: 4-12 parts; Red phosphorus stabilizer: 0.5-8 parts; smoke suppressant: 0.5-5 parts; tracking index enhancer: 2-10 parts; masterbatch: 0.5-5 parts; antioxidant: 0.1-0.5 parts. The present invention also correspondingly provides a preparation method of the above-mentioned red phosphorus flame-retardant nylon composite material and a method for measuring phosphorus precipitation in the red phosphorus flame-retardant nylon composite material. The composition of the red phosphorus flame-retardant nylon composite material of the present invention is optimized, and each component interacts synergistically, and the performance of the obtained red phosphorus flame-retardant nylon composite material is more balanced. In addition to high flame-retardant efficiency, excellent mechanical At the same time, it also has the advantages of low smoke density, excellent anti-separation performance and high tracking index.

Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a red phosphorus flame-retardant nylon composite material and a preparation method thereof. Background technique

[0002] Red phosphorus masterbatch is widely used for compounding with nylon resin due to its advantages of high flame retardant efficiency, less addition, low cost, and little impact on the comprehensive performance of the resin matrix. The flame retardant reinforced nylon composite material prepared by it has good flame retardant Performance and mechanical properties, are widely used in electronics, electrical appliances and other fields. With the continuous improvement of environmental protection requirements and the application requirements of flame retardant materials in the electrical field, there are two major problems to be solved in the process of processing and application of red phosphorus flame retardant reinforced nylon: (1) high odor and high...

Examples

Embodiment 1

[0047] A red phosphorus flame-retardant nylon composite material, its components and the weight parts of each component are shown in Table 1 below.

[0048] The preparation method of the above-mentioned red phosphorus flame-retardant nylon composite material comprises the following steps:

[0049] (1) Dry the nylon resin and red phosphorus masterbatch in hot air at 120°C for 4 hours, and set aside;

[0050] (2) Mix nylon resin, red phosphorus flame retardant, red phosphorus stabilizer, smoke suppressant, CTI enhancer, black masterbatch and antioxidant in a homogenizing pot at high speed, and keep the speed at 100-500 rpm Minutes, mixing time is 3 minutes, obtains homogeneous mixture;

[0051] (3) Add the mixture obtained in step (2) into the hopper of the twin-screw extruder, then add the reinforcement component from the side feeding port of the twin-screw extruder, melt blending, extrusion, cooling , air-drying, and pelletizing to prepare the red phosphorus flame-retardant ...

Embodiment 2-8

[0055] The components and preparation methods of the red phosphorus flame-retardant nylon composite materials in Examples 2-8 are the same as those in Example 1, but the parts by weight of each component are different from those in Example 1. See Table 1 for details.

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a red phosphorus flame-retardant nylon composite material and a preparation method thereof. Background technique

[0002] Red phosphorus masterbatch is widely used for compounding with nylon resin due to its advantages of high flame retardant efficiency, less addition, low cost, and little impact on the comprehensive performance of the resin matrix. The flame retardant reinforced nylon composite material prepared by it has good flame retardant Performance and mechanical properties, are widely used in electronics, electrical appliances and other fields. With the continuous improvement of environmental protection requirements and the application requirements of flame retardant materials in the electrical field, there are two major problems to be solved in the process of processing and application of red phosphorus flame retardant reinforced nylon: (1) high odor and high...

Examples

Embodiment 1

[0047] A red phosphorus flame-retardant nylon composite material, its components and the weight parts of each component are shown in Table 1 below.

[0048] The preparation method of the above-mentioned red phosphorus flame-retardant nylon composite material comprises the following steps:

[0049] (1) Dry the nylon resin and red phosphorus masterbatch in hot air at 120°C for 4 hours, and set aside;

[0050] (2) Mix nylon resin, red phosphorus flame retardant, red phosphorus stabilizer, smoke suppressant, CTI enhancer, black masterbatch and antioxidant in a homogenizing pot at high speed, and keep the speed at 100-500 rpm Minutes, mixing time is 3 minutes, obtains homogeneous mixture;

[0051] (3) Add the mixture obtained in step (2) into the hopper of the twin-screw extruder, then add the reinforcement component from the side feeding port of the twin-screw extruder, melt blending, extrusion, cooling , air-drying, and pelletizing to prepare the red phosphorus flame-retardant ...

Embodiment 2-8

[0055] The components and preparation methods of the red phosphorus flame-retardant nylon composite materials in Examples 2-8 are the same as those in Example 1, but the parts by weight of each component are different from those in Example 1. See Table 1 for details.

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