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High glow-wire/high-CTI halogenous flame-retardant polypropylene composite and preparation method thereof

A technology for flame-retardant polypropylene and composite materials, which is applied in the field of high-glow wire and high-CTI halogen-containing flame-retardant polypropylene composite materials and its preparation, and can solve the problems of insufficient high-temperature resistance, high leakage resistance index, and high-temperature resistance of halogen-free flame-retardant materials. Mineral reinforcement and other issues to achieve excellent CTI performance, excellent flame retardant properties, and the effect of increasing the temperature of the glow wire

Inactive Publication Date: 2013-03-13
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, halogen-free flame-retardant polypropylene materials have also been developed rapidly, and there is a tendency to gradually replace some general halogen-containing flame-retardant materials, but halogen-free flame-retardant materials have insufficient high temperature resistance, and it is difficult to pass mineral reinforcement and other technical problems
Most of the halogen-containing flame-retardant polypropylene composite materials with high glow wire and high CTI (high leakage trace index) on the market are imported products from abroad, and the price is relatively expensive

Method used

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  • High glow-wire/high-CTI halogenous flame-retardant polypropylene composite and preparation method thereof
  • High glow-wire/high-CTI halogenous flame-retardant polypropylene composite and preparation method thereof
  • High glow-wire/high-CTI halogenous flame-retardant polypropylene composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0025] The proportions (parts by weight) of Embodiments 1 to 3 are shown in Table 1.

[0026] Table 1

[0027] raw material name

Example 1

Example 2

Example 3

Polypropylene

49

44

51

Compatibilizer

4

4

4

primary flame retardant

22

22

25

Synergistic Flame Retardant A

-

5

5

Synergistic Flame Retardant B

25

25

15

antioxidant

0.4

0.4

0.4

lubricant

0.3

0.3

0.3

[0028] Put all the components in proportion into a high mixer and mix for 5 minutes, then use a screw extruder to extrude and granulate. The processing temperature is 200° C., and the screw rotation speed is 250 rpm.

[0029] A kind of high-glow wire, high CTI halogen-containing flame-retardant polypropylene composite material obtained in Examples 1-3 and its preparation method samples 1-3 were compared in performance tests, and the mechanical properties were teste...

Embodiment 4

[0034] A method for preparing a high-glow wire and high CTI halogen-containing flame-retardant polypropylene composite material, the method comprising the following steps:

[0035] (1) Take raw materials by weight: polypropylene 40, compatibilizer 8, main flame retardant 3, synergistic flame retardant A15, synergistic flame retardant B 25, antioxidant 0.5, lubricant 0.5;

[0036] (2) Put all the raw materials into the high mixer and mix for 2-10 minutes, then discharge;

[0037] (3) Put the mixed raw materials into a screw machine to extrude and granulate. The rotating speed of the screw machine is 180-350 rpm and the temperature is 190-220°C.

[0038] The raw materials used are all commercially available products, wherein the polypropylene is copolymerized polypropylene with a crystallinity of 50%-60% and a melt index of 30g / 10min. The compatibilizer is maleic anhydride grafted polypropylene (PP-g-MAH), and the grafting rate is 1%. The main flame retardant is a bromine-anti...

Embodiment 5

[0040] A method for preparing a high-glow wire and high CTI halogen-containing flame-retardant polypropylene composite material, the method comprising the following steps:

[0041] (1) Take raw materials by weight: polypropylene 75, compatibilizer 1, main flame retardant 28, synergistic flame retardant A0, synergistic flame retardant B0, antioxidant 0.1, lubricant 0.1;

[0042] (2) Put all the raw materials into the high mixer and mix for 2-10 minutes, then discharge;

[0043] (3) Put the mixed raw materials into a screw machine to extrude and granulate. The rotating speed of the screw machine is 180-350 rpm and the temperature is 190-220°C.

[0044] The raw materials used are all commercially available products, wherein the polypropylene is copolymerized polypropylene with a crystallinity of 50%-60% and a melt index of 30g / 10min. The compatibilizer is maleic anhydride grafted polypropylene (PP-g-MAH), and the grafting rate is 1%. The main flame retardant is a bromine-antimo...

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Abstract

The invention relates to a high glow-wire / high-CTI halogenous flame-retardant polypropylene composite and a preparation method thereof. The composite is prepared from the following raw materials in parts by weight: 40-75 parts of polypropylene, 1-8 parts of a compatilizer, 3-28 parts of main flame retardant, 0-15 parts of synergistic flame-retarded agent A, 0-25 parts of synergistic flame-retarded agent B, 0.1-0.5 part of antioxidant, and 0.1-0.5 part of lubricant. The preparation method comprises the following steps: weighting raw materials in a certain weight ratio, and putting all the raw materials in a high-speed mixer to carry out mixing 2-10 minutes; taking out of the raw materials; and putting the uniformly mixed raw materials into a double-screw extruder to carry out extrusion granulation. The composite disclosed by the invention is developed aiming at the special requirements of electrical appliance products on antistatic and flame-retardant properties of materials; and compared with the prior art, the composite disclosed by the invention meets the flame-retardant properties required by products, and is good in mechanical properties and excellent in processing performance, and the glow-wire temperature of the composite is greatly improved.

Description

technical field [0001] The invention relates to a high glow wire, high CTI halogen-containing flame retardant polypropylene composite material and a preparation method thereof. Flame retardant products used under high voltage can be widely used in many fields such as electronics, home appliances, and motors. Background technique [0002] Polypropylene material is widely used in many fields because of its excellent mechanical properties and cost performance. The development of flame-retardant polypropylene materials has expanded new fields of polypropylene product applications, enabling composite materials to have good mechanical properties and excellent flame retardancy, and has extremely broad application prospects in the fields of electronics, home appliances, and motors. With the development of society and the continuous improvement of people's requirements for material properties, the requirements of high cost performance and safe application have been paid more and mor...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L51/06C08K13/06C08K9/04C08K3/22C08K5/03C08K5/3492C08K3/34C08K5/134C08K5/524
Inventor 黄晓明才勇娄小安王尹杰
Owner SHANGHAI SUNNY
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