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A kind of 5va grade halogen-free flame retardant polypropylene material and preparation method thereof

A flame retardant polypropylene and polypropylene technology, applied in the field of 5VA halogen-free flame retardant polypropylene material and its preparation, can solve problems such as inability to pass, and achieve the effects of reducing production costs, quickly and effectively isolating oxygen and heat sources

Active Publication Date: 2022-08-05
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above ideas can make the material reach 2.0mm 5VA, but usually the proportion of flame retardant and filler needs to reach more than 38%, and for thinner 5VA, such as 1.5mm, it cannot pass

Method used

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  • A kind of 5va grade halogen-free flame retardant polypropylene material and preparation method thereof
  • A kind of 5va grade halogen-free flame retardant polypropylene material and preparation method thereof
  • A kind of 5va grade halogen-free flame retardant polypropylene material and preparation method thereof

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preparation example Construction

[0060] After weighing the components as shown in Table 1 and Table 2, the preparation method of the 5VA grade halogen-free flame retardant polypropylene material described in the embodiment includes the following steps:

[0061] (1) The polypropylene, compatibilizer, anti-drip agent, lubricant and antioxidant are fed into the twin-screw extruder for stirring and mixing, and the rotational speed of the screw during the stirring process is 300-400r / min;

[0062] (2) Feed the P-N intumescent flame retardant, glass powder, flake filler and needle filler into a twin-screw extruder, extrude and granulate under a vacuum degree of ≥0.08 MPa to obtain the 5VA grade Halogen flame retardant polypropylene material.

[0063] At the same time, this application sets Comparative Examples 1-11, and the components and parts by weight of the specific Comparative Examples 1-11 are selected as shown in Table 3, Table 4 and Table 5:

[0064] Table 3 Component selection of specific comparative exam...

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Abstract

The invention discloses a 5VA grade halogen-free flame retardant polypropylene material, and specifically relates to the technical field of polypropylene composite materials. The 5VA-grade halogen-free flame-retardant polypropylene material includes the following components in parts by weight: 55-70 parts of polypropylene, 20-24 parts of P-N intumescent flame retardant, 3-10 parts of glass frit, and flake filler 1-4 parts, needle filler 1-4 parts, compatibilizer 2-5 parts, anti-drip agent 0.2-0.5 part, lubricant 0.2-0.5 part and antioxidant 0.2-0.4 part. The 5VA halogen-free flame-retardant polypropylene material provided by the invention has the characteristics of thinner 1.5mm thickness and easier processing.

Description

technical field [0001] The invention relates to the technical field of polypropylene composite materials, in particular to a 5VA grade halogen-free flame-retardant polypropylene material and a preparation method thereof. Background technique [0002] With the improvement of flame retardant requirements, more and more fields require the flame retardant grade of materials to reach 5VA. For flame retardant polypropylene, it is very easy to melt and drop, and the thinner the thickness, the easier it is to be damaged during the 5VA test. burn through. Generally, halogen-free flame retardant polypropylene needs to pass 2.0mm thickness 5VA, and the amount of P-N intumescent flame retardant and filler should be more than 38 parts. It is the situation where the mucous membrane is more likely to be precipitated during the injection molding process. However, for the 5VA test with a thinner thickness, it is difficult to increase the flame retardant content, and glass fiber is usually ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L51/06C08L27/18C08L51/00C08K13/04C08K7/10C08K3/40C08K3/34
CPCC08L23/12C08L2201/02C08L2201/22C08L2201/08C08K2201/016C08K2201/014C08L51/06C08L27/18C08L51/006C08K13/04C08K7/10C08K3/40C08K3/34
Inventor 陈新泰汪洋张翼翔刘鹏辉龚文幸沈旭渠陈锐彬
Owner GUANGDONG JUSHI CHEM CO LTD