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High-glossiness flame-retardant polypropylene composite and preparation method thereof

A technology of flame-retardant polypropylene and composite materials, which is applied in the field of high-gloss flame-retardant polypropylene composite materials and its preparation, can solve the problems of low flame-retardant efficiency, large addition amount, and secondary pollution of halogen-free flame-retardant technology, and achieve Low toxicity, low smoke production and low smoke density

Active Publication Date: 2012-05-30
滁州格美特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the halogen / antimony oxide composite flame retardant system will produce a large amount of toxic smoke when burning, causing secondary pollution
Halogen-free flame retardant technology generally has problems such as low flame retardant efficiency, large amount of addition, and difficult processing.

Method used

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  • High-glossiness flame-retardant polypropylene composite and preparation method thereof
  • High-glossiness flame-retardant polypropylene composite and preparation method thereof
  • High-glossiness flame-retardant polypropylene composite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 5

[0034] A high-gloss flame-retardant polypropylene composite material, comprising the following components in parts by weight: homopolypropylene 45 with a melt index of 10g / 10min; the flame retardant is melamine bromate 15; the synergistic flame retardant is granular Magnesium hydroxide 40 with a diameter of 0.5 microns; the compatibilizer is polypropylene grafted maleic anhydride 10 with a grafting rate of 6%; the nucleating agent of sorbitol derivatives 3.0; the lubricant is solid paraffin 1.0; Joint agent 0.4; antioxidant 1010 0.5.

[0035] The above-mentioned components are weighed according to the proportion and mixed evenly; then the mixture is put into a twin-screw extruder for melt extrusion, strand drawing, cooling, pelletizing, and drying to obtain a high-gloss flame-retardant polypropylene composite material; Wherein, the aspect ratio of the twin-screw extruder is 32:1, the processing temperature is 220° C., and the screw speed is 350 rpm.

Embodiment 6

[0037] A high-gloss flame-retardant polypropylene composite material, comprising the following components in parts by weight: high crystallization polypropylene 95 with a melt index of 60g / 10min; the flame retardant is melamine bromate 5; the compatibilizer is grafting rate 0.5% polypropylene graft maleic anhydride 5; rosin acid nucleating agent 0.5; low molecular weight polyethylene wax 0.2 lubricant; titanate coupling agent 0.2; antioxidant 1680.1.

[0038] The above-mentioned components are weighed according to the proportion and mixed evenly; then the mixture is put into a twin-screw extruder for melt extrusion, strand drawing, cooling, pelletizing, and drying to obtain a high-gloss flame-retardant polypropylene composite material; Wherein, the aspect ratio of the twin-screw extruder is 40:1, the processing temperature is 170° C., and the screw speed is 450 rpm.

Embodiment 7

[0040] A high gloss flame retardant polypropylene composite material, comprising the following components in parts by weight: a homopolypropylene 50 with a melt index of 35g / 10min, a high crystalline polypropylene 30 with a melt index of 45g / 10min; the flame retardant is Melamine bromate 12; the synergistic flame retardant is magnesium hydroxide 30 with a particle size of 1-2 microns; the compatibilizer is polypropylene grafted maleic anhydride 8 with a grafting ratio of 3.5%; organic carboxylic acid and carboxylic acid Salt nucleating agent 1.5; lubricant calcium stearate 0.2, zinc stearate 0.2, EBS 0.1; titanate coupling agent 0.2, aluminate coupling agent 0.1; antioxidant 1010 0.2, antioxidant Agent 168 0.1.

[0041] The above-mentioned components are weighed according to the proportion and mixed evenly; then the mixture is put into a twin-screw extruder for melt extrusion, strand drawing, cooling, pelletizing, and drying to obtain a high-gloss flame-retardant polypropylene...

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Abstract

A high-glossiness flame-retardant polypropylene composite comprises, by weight, from 45 to 95 parts of polypropylene, from 5 to 15 parts of flame-retardant agent, from 0 to 40 parts of flame retardant synergist, from 5 to 10 parts of compatilizer, from 0.5 to 3.0 parts of nucleating agent, from 0.2 to 1.0 part of lubricant, from 0.2 to 0.4 part of coupling agent and from 0.1 to 0.5 part of antioxidant. A flame-retardant system composed of magnesium hydroxide and melamine bromated is compounded with the polypropylene to endow the polypropylene composite with excellent flame-retardant performance, and polypropylene graft compound is added to improve compatibility of the flame-retardant agent with the polypropylene so as to further improve the flame retardancy. The high-glossiness flame-retardant polypropylene composite belongs to low-halogen flame-retardant polypropylene, contains little halogen flame-retardant components, is low in smoke generating quantity and toxicity, has the advantages of high glossiness, free of precipitation, high glow wire, low smoke density, high rigidity, surface hardness and heat resistance, and the like, and is widely applicable to fields of switch panels, sanitary wares, home appliance casings and the like.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a high-gloss flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] As one of the three major synthetic polymer materials, polypropylene (PP) has the advantages of light weight, easy processing and molding, and excellent heat resistance, chemical corrosion resistance, and mechanical properties, so it is widely used in automobiles, construction, electronics, etc. Electric appliances and other industries are developing extremely fast, with a wide variety of products, and some modified products have gradually replaced higher-priced engineering plastics. However, due to its own structure (the oxygen index is only about 17.4), polypropylene is easy to burn in case of fire, with high calorific value and fast burning speed, accompanied by phenomena such as smoke and dripping, which is prone to fire, which is harmful to people...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/02C08K5/3492C08K3/22
Inventor 张志勇
Owner 滁州格美特科技有限公司
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