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High glow-wire anti-flaming polypropylene composite and production method of polypropylene composite

A technology for burning polypropylene and composite materials, which is applied in the field of plastic flame retardancy, which can solve the problems of large amount of flame retardants, generation of harmful smoke, and decrease in tensile strength, so as to achieve good flame retardancy and promote the formation of carbon layers , the effect of high tensile strength

Active Publication Date: 2015-04-29
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these flame retardant systems can achieve UL 94 V-0, some of these flame retardant polypropylene materials are halogen-free systems, which have low flame retardant efficiency, poor weather resistance and high tensile strength due to large additions of flame retardants. Disadvantages such as decreased amplitude; some are halogen-containing systems, which produce harmful smoke when burned

Method used

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  • High glow-wire anti-flaming polypropylene composite and production method of polypropylene composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The ingredient weight composition is:

[0014] 100kg of polypropylene, 0.5kg of free radical initiator, 10kg of ground glass fiber, 3.5kg of triphenylphosphine hydrobromide wrapped in MCA, 1kg of silicone copolymer, and 0.2kg of magnesium stearate;

[0015] After the polypropylene and the compound flame retardant are weighed by weight, they are put into a high-mixer and mixed for 30s, and then added to a twin-screw extruder with a length-to-diameter ratio of 28 to 32:1 for physical melt blending, extrusion, pelletizing, and cooling. , dicing, drying, batch mixing, extruding and granulating through a twin-screw extruder, the extrusion temperature is 180 ℃ ~ 190 ℃, and sample 1 is obtained.

Embodiment 2

[0017] The ingredient weight composition is:

[0018] 100kg of polypropylene, 0.5kg of free radical initiator, 10kg of ground glass fiber, 3.5kg of polyvinylamine hydrobromide wrapped in MCA, 1kg of silicone copolymer, and 0.2kg of magnesium stearate;

[0019] After the polypropylene and the compound flame retardant are weighed by weight, they are put into a high-mixer and mixed for 30s, and then added to a twin-screw extruder with a length-to-diameter ratio of 28 to 32:1 for physical melt blending, extrusion, pelletizing, and cooling. , dicing, drying, batch mixing, extruding and granulating through a twin-screw extruder, the extrusion temperature is 180 ℃ ~ 185 ℃, and sample 2 is obtained.

Embodiment 3

[0021] The ingredient weight composition is:

[0022] 100kg of polypropylene, 0.6kg of free radical initiator, 10kg of ground glass fiber, 5kg of MCA-wrapped melamine hydrobromide, 1.5kg of silicone copolymer, and 0.4kg of magnesium stearate;

[0023] After the polypropylene and the compound flame retardant are weighed by weight, they are put into a high-mixer and mixed for 30s, and then added to a twin-screw extruder with a length-to-diameter ratio of 28 to 32:1 for physical melt blending, extrusion, pelletizing, and cooling. , dicing, drying, batch mixing, extruding and granulating through a twin-screw extruder, the extrusion temperature is 180 ℃ ~ 185 ℃, and sample 3 is obtained.

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Abstract

The invention discloses a high glow-wire anti-flaming polypropylene composite. The composite consists of the following components in parts by weight: 100 parts of polypropylene and 5-10 parts of a compound fire retardant, wherein the compound fire retardant comprises the following components in parts by weight: 5-10 parts of a radical initiator, 100 parts of milled glass fibre having a grain diameter less than 2.86 microns, 35-70 parts of a micro adhesive wrapped hydrobromide fire retardant, 10-30 parts of a silicone polymer and 2-8 parts of magnesium stearate. The high glow-wire anti-flaming polypropylene composite prepared by the method disclosed by the invention is excellent in anti-flaming property, reaches a UL94 anti-flaming V-2(1.5 / 3.0mm) grade, passes GWIT (Glow Wire Ignition Temperature) and GWFI (Glow Wire Ignition Index) glow wires, and has the characteristics of light weight, great tensile strength, no halogen, no smoke and no precipitation.

Description

technical field [0001] The invention relates to the field of plastic flame retardant, in particular to a high-glow-wire non-combustible polypropylene composite material, and the invention also relates to a production method of the high-glow-wire non-combustible polypropylene composite material. Background technique [0002] Polypropylene is one of the five general-purpose plastics and is widely used in the fields of home appliances, automobiles, and medical devices. However, like other plastics, it has flammable characteristics. In an environment where people pay more and more attention to life safety, fire prevention and environmental protection are the main directions of polypropylene development. [0003] The glow wire flame retardant test is a good test method. The glow-wire flame retardant test is mainly used to simulate the thermal point caused by a heat source such as an overload resistance of a thermal element in a short period of time, and to evaluate the possibil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L83/04C08K9/10C08K7/14C08K5/098
Inventor 张翼翔龚文幸张秀芹何燕岭
Owner GUANGDONG JUSHI CHEM CO LTD
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