Low-halogen flame-retardant PP (polypropylene) material as well as preparation method and application thereof

[0060] Examples 1 to 4

[0061] A low-halogen flame-retardant PP material, in parts by weight, includes the components shown in Table 1 below.

[0062] Table 1

[0063] serial number Example 1 Example 2 Example 3 Example 4 PP resin-1 80 98 85 96 Phosphorus nitrogen flame retardant-1 3 0.5 3 0.5 Halogenated flame retardant-1 0.025 0.1 0.030 0.035

[0064] The specific preparation methods of the low-halogen flame-retardant PP materials of the above-mentioned embodiments 1-4 are as follows:

[0065] The PP resin, phosphorus nitrogen flame retardant and halogenated flame retardant are put into the first section of the twin-screw extruder according to the proportion. After being heated and melted by the twin-screw extruder, they are extruded into strips through the die. Then water-cooled and air-dried, and cut into pellets to obtain a low-halogen flame-retardant PP material.

[0066] Example 5

[0067] A low-halogen flame retardant PP material, in parts by weight, includes the same components and contents as those in Example 3, except that the phosphorus-nitrogen flame retardant is phosphorus-nitrogen flame retardant-2.

[0068] The specific preparation method of the low halogen flame retardant PP material is the same as that in Example 3.

[0069] Example 6

[0070] A low-halogen flame retardant PP material, in parts by weight, includes the same components and contents as those in Example 3, except that the phosphorus-nitrogen flame retardant is phosphorus-nitrogen flame retardant-3.

[0071] The specific preparation method of the low halogen flame retardant PP material is the same as that in Example 3.