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Halogen-free flame retardant glass-fiber reinforced polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of halogen-free flame-retardant glass fiber reinforced polypropylene composite materials and its preparation, can solve the problems of slippery processing, ammonia gas release, poor flame retardancy, etc., to reduce energy consumption and Cost, small amount of water, good dispersion effect

Inactive Publication Date: 2015-06-10
苏州安鸿泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the poor flame retardancy of glass fiber reinforced PP materials in the prior art, the serious water slippage phenomenon in the processing of traditional APP intumescent flame retardant systems, and the large amount of ammonia To solve the problem of outgassing, provide an improved halogen-free flame-retardant glass fiber reinforced polypropylene composite material

Method used

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  • Halogen-free flame retardant glass-fiber reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of compound flame retardant: Weigh MPP and aluminum diethylphosphinate according to the mass ratio of 79:21, add to a high-speed mixer and mix evenly to obtain a compound flame retardant; it can also be added during mixing A small amount of coupling agent makes the mixing effect of the two better;

[0047] (2) Raw material premixing: according to mass percentage, weigh 33% PP resin, 25% compound flame retardant prepared in step (1), 7% maleic anhydride grafted PP, 2% zinc oxide, 1.5% Coupling agent KH550, 0.4% antioxidant 168, 0.2% antioxidant 1010, 0.6% calcium stearate, 0.3% silicone powder, fully mix the above-mentioned raw materials in a high-speed mixer;

[0048] (3) Add the raw materials mixed in step (2) into the twin-screw extruder from the feeding port, and the glass fiber is fed in from the glass fiber feeding hole. By setting the host speed and feeding frequency, the feeding amount of the glass fiber is just right was 30%, melt-mixed, e...

Embodiment 2

[0051] (1) Preparation of compound flame retardant: Weigh MPP, MCA and aluminum diethylphosphinate in a mass ratio of 50:10:40, add them into a high-speed mixer and mix evenly to obtain a compound flame retardant; When mixing, add a small amount of coupling agent to make the mixing effect better;

[0052] (2) Premixing of raw materials: by mass percentage, weigh 33% PP resin, 25% compound flame retardant prepared in step (1), 7% POE grafted maleic anhydride, 2% active magnesium oxide, 1.5 % coupling agent KH550, 0.4% antioxidant 628, 0.2% antioxidant 1010, 0.3% magnesium stearate, 0.3% calcium stearate, 0.3% silicone powder, mix the above-mentioned raw materials at high speed Fully mix in the machine;

[0053] (3) Add the raw materials mixed in step (2) into the twin-screw extruder from the feeding port, and the glass fiber is fed in from the glass fiber feeding hole. By setting the host speed and feeding frequency, the feeding amount of the glass fiber is just right w...

Embodiment 3

[0056] (1) Preparation of compound flame retardant: weigh MP and aluminum hypophosphite according to the mass ratio of 41:59, add them to a high-speed mixer and mix evenly to obtain a compound flame retardant; a small amount of coupling agent can also be added during mixing Make the two mix better;

[0057] (2) Premixing of raw materials: by mass percentage, weigh 33% PP resin, 25% compound flame retardant prepared in step (1), 7% ethylene methyl acrylate copolymer, 2% zinc oxide, 1.5% Coupling agent KH570, 0.4% antioxidant 168, 0.2% antioxidant 1010, 0.3% PE wax, 0.3% calcium stearate, 0.3% silicone powder, the raw materials weighed above are fully mixed in a high-speed mixer mix;

[0058] (3) Add the raw materials mixed in step (2) into the twin-screw extruder from the feeding port, and the glass fiber is fed in from the glass fiber feeding hole. By setting the host speed and feeding frequency, the feeding amount of the glass fiber is just right was 30%, melt-mixed, ...

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Abstract

The invention relates to a halogen-free flame retardant glass-fiber reinforced polypropylene composite material, which comprises the following components in weight percentage: 33-59% of polypropylene resin, 15-35% of compound flame retardant, 20-30% of glass fiber, 3-10% of compatibilizing agent, 0.4-2.5% of coupling agent and 1-3% of thermal stabilizer; the compound flame retardant is prepared by mixing and compounding a main flame retardant and an auxiliary flame retardant with a mass ratio of 41-79: 21-59; the main flame retardant is one or a mixture of melamine polyphosphate, melamine phosphate and melamine cyanurate; and the auxiliary flame retardant is one or a mixture of inorganic hypophosphite, diethyl hypophosphite and diphenyl hypophosphite. The polypropylene material is good in fire retardant performance and high in fire retardant efficiency; because ammonium polyphosphate component is excluded, the polypropylene material has the advantages of non-hydroplaning in processing, no release of ammonia gas and less water in bracing.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] As one of the four general-purpose plastics, polypropylene (PP) has good mechanical properties and chemical resistance, is easy to process and is cheap, and is widely used. However, when making some engineering parts and applying to the field of high-performance materials, the mechanical properties of polypropylene are difficult to meet the requirements, so the usual practice is to add glass fibers to the polypropylene matrix and strengthen it through blending and extrusion. A glass fiber reinforced polypropylene material is obtained. In addition, the oxygen index (LOI) of polypropylene is only about 17.5. It is a flammable material and is easy to drip when it burns. Once it catches fire, it is easy to ignite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08L23/08C08K13/04C08K7/14C08K5/3492C08K5/5313C08K3/32C08K3/22B29C47/92B29C48/92
CPCC08L23/12C08L2201/02C08L2205/03C08L51/06C08L83/04C08K13/04C08K7/14C08K5/3492C08K5/5313C08K2003/2296C08K2003/321C08L23/0846
Inventor 李高涛朱长江
Owner 苏州安鸿泰新材料有限公司
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