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Environment friendly fireproof composite polypropylene material and its prepn process

A technology of flame-retardant polypropylene and composite materials, applied in the direction of fire-resistant coatings, etc., can solve problems such as large smoke, toxicity, and secondary hazards to life and property safety, and achieve the effect of improved mechanical properties and excellent electrical properties

Active Publication Date: 2007-08-22
HANGZHOUSNGOOSE ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the smoke produced by halogenated flame retardants during the flame retardant process is large and toxic, including carbon monoxide, aldehydes, dioxins, etc., causing "secondary hazards" to people's life and property safety.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The ratio of montmorillonite and epoxy compound is 3:1, adding other processing aids, mixing and kneading to prepare epoxidized organic montmorillonite. Take 50 parts of the prepared epoxidized organic montmorillonite and 50 parts of maleic anhydride grafted polypropylene, mix them uniformly at a high speed, add them into a twin-screw extruder, extrude and granulate at a temperature of 180°C-240°C, and obtain Grafted polypropylene montmorillonite masterbatch.

[0035] Get 6 parts of this grafted polypropylene montmorillonite masterbatch, 54 parts of polypropylene (F3045), 8 parts of glass fiber, 30 parts of nitrogen-phosphorus flame retardant, other processing aids (comprising antioxidant, lubricant and compatible agent) 2 parts, twin-screw mixing and kneading at a temperature of 180°C-200°C, melt extrusion and granulation to prepare an environmentally friendly flame-retardant polypropylene composite material.

Embodiment 2

[0037] The ratio of montmorillonite and epoxy compound is 2:1, adding other processing aids, mixing and kneading to prepare epoxidized organic montmorillonite. Take 50 parts of the prepared epoxidized organic montmorillonite and 50 parts of maleic anhydride grafted polypropylene, mix them uniformly at a high speed, add them into a twin-screw extruder, extrude and granulate at a temperature of 180°C-240°C, and obtain Grafted polypropylene montmorillonite masterbatch.

[0038]Get 8 parts of this grafted polypropylene montmorillonite master batch, 52 parts of polypropylene (F401), 10 parts of glass fiber, 28 parts of nitrogen-phosphorus flame retardant, other processing aids (comprising antioxidant, lubricant and compatible agent) 2 parts, twin-screw mixing and kneading at a temperature of 180°C-200°C, melt extrusion and granulation to prepare an environmentally friendly flame-retardant polypropylene composite material.

[0039] Performance Testing:

[0040] With the environmen...

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Abstract

The present invention discloses one kind of green fireproof composite polypropylene material, which consists of grafting polyolefin-base montmorillonite master batch 5-10 wt%, glass fiber 5-15 wt%, no-halogen expanding fire retardant 25-35 wt%, polypropylene resin 35-64 wt% and machining assistant 1-5 wt%. The green fireproof composite polypropylene material has completely stripped montmorillonite master batch, and montmorillonite, glass fiber and fire retardant homogeneously dispersed in polypropylene base. It has fire retarding performance up to UL-94 V0 level, high mechanical performance and excellent electrical performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a polypropylene / montmorillonite / glass fiber environment-friendly flame-retardant composite material and a preparation method thereof. Background technique [0002] Polypropylene is one of the five general-purpose resins. It has excellent properties such as light weight, easy processing, and strong chemical resistance. It has been widely used in chemical, electrical, and packaging industries. With the expansion of demand in industries such as shipbuilding and electrical insulation materials, people have put forward higher requirements for its flame retardancy. Polypropylene itself is a flammable material, its oxygen index is only 17.0-18.0%, and its char formation rate is low, and it produces molten droplets when burned, so it must be flame retardant modified in many applications. In particular, the promulgation of the EU WEEE Directive (EU Directive 2002 / ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/04C09K21/14C08K7/14C08L51/00
Inventor 谢松桂盛仲夷
Owner HANGZHOUSNGOOSE ELECTRICAL
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