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

A technology of polypropylene material and long glass fiber, which is applied in front-end modules, manufacturing automobile engine bottom guard, instrument panel frame, halogen-free flame-retardant long glass fiber reinforced polypropylene material and its preparation field, which can solve the problem of non-compliant automobile parts Modularization requirements, low degree of manufacturing integration, insufficient design freedom, etc., to achieve excellent dimensional stability, good heat and oxygen aging resistance, and low shrinkage

Inactive Publication Date: 2012-06-27
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, metal steel plates are used to make the bottom guard of automobile engines. Due to the high density of metal materials, the bottom guard is too heavy (usually weighing up to 10 kg), and the processing technology of the product is cumbersome, and the degree of freedom in design is seriously insufficient. Manufacturing integration The degree of modernization is low and does not meet the modular requirements of automotive components
In addition, the impact of this metal engine underguard with gravel, etc. will generate noise

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Plasticize 4kg of polypropylene with a melt flow rate of 50g / 10min and 1kg of glass fiber compatibilizer through a single-screw extruder, and transport them through a die to a temperature set between 280°C and 380°C Then add 5 kg of alkali-free continuous long glass fibers into the high-temperature melt tank and melt and blend with the above-mentioned raw materials, so that the obtained materials are pulled out from the high-temperature melt tank, and then cut Pelletizing by a granulator to obtain long glass fiber masterbatches with a length of 12mm and a mass content of long glass fibers of 50%;

[0033] (2), 84.8 kg of polypropylene same as step (1), 0.1 kg of heat stabilizer Irganox 1010 (CIBA company), 0.1 kg of lubricant EBS (ie N, N-ethylene bis stearamide) from The main feeding port located at one end of the screw extruder is fed into the screw extruder for melt blending; make 5 kg of halogen-free flame retardant FP-2200 (a kind of phosphorus suitable for...

Embodiment 2

[0038] (1) Plasticize 8kg of polypropylene with a melt flow rate of 100g / 10min and 2kg of glass fiber compatibilizer through a single-screw extruder, and transport them through a die to a temperature set between 280°C and 380°C Then add 10 kg of alkali-free continuous long glass fibers into the high-temperature melt tank and melt and blend with the above-mentioned raw materials, so that the obtained material is pulled out from the high-temperature melt tank and then cut Pelletizing by a granulator to obtain long glass fiber masterbatches with a length of 12mm and a mass content of long glass fibers of 50%;

[0039] (2), 69.6 kg of polypropylene same as step (1), 0.2 kg of heat stabilizer Irganox 1010 (CIBA company), 0.2 kg of lubricant EBS (ie N, N-ethylene bis stearamide) from The main feeding port located at one end of the screw extruder is fed into the screw extruder for melt blending; make 10 kg of halogen-free flame retardant FP-2200 (a kind of phosphorus suitable for...

Embodiment 3

[0044] (1) Plasticize 12kg of polypropylene with a melt flow rate of 180g / 10min and 3kg of glass fiber compatibilizer through a single-screw extruder, and convey it through a die to a temperature set between 280°C and 380°C Then add 15 kg of alkali-free continuous long glass fibers into the high-temperature melt tank and melt and blend with the above-mentioned raw materials, so that the obtained materials are pulled out from the high-temperature melt tank, and then cut Pelletizing by a granulator to obtain long glass fiber masterbatches with a length of 12mm and a mass content of long glass fibers of 50%;

[0045] (2), 54.4 kg of polypropylene same as step (1), 0.3 kg of heat stabilizer Irganox 1010 (CIBA company), 0.3 kg of lubricant EBS (ie N, N-ethylene bis stearamide) from The main feed port located at one end of the screw extruder is fed into the screw extruder for melt blending; make 15 kg of halogen-free flame retardant FP-2200 (a kind of phosphorus suitable for the...

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Abstract

The invention relates to a halogen-free flame-retardant long glass fiber reinforced polypropylene material, which comprises the following raw materials in percentage by weight: 49 to 88.8 percent of polypropylene, 0.1 to 0.5 percent of thermal stabilizer, 0.1 to 0.5 percent of lubricating agent, 5 to 20 percent of halogen-free flame retardant, 1 to 5 percent of glass fiber compatilizer and 5 to 25 percent of long glass fiber, wherein the polypropylene is high fluidity polypropylene. The invention also relates to a preparation method for the polypropylene material. The preparation method comprises the following steps of: preparing a long glass fiber master batch and a halogen-free flame-retardant master batch, mixing the two master batches uniformly, and thus obtaining the polypropylene material, wherein when the polypropylene material is used, the polypropylene material is directly used for injection molding of parts. The polypropylene material has excellent flame-retardant property and dimensional stability, high mechanical strength, low shrinkage rate and good creep resistance and thermal oxidation resistance, is suitable for injection molding of thin-wall large pieces and automotive part products with complex structures such as automotive engine bottom guard plates, front-end modules, instrument panel frameworks and the like, saves the automobile manufacturing cost, and is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant long glass fiber reinforced polypropylene material and a preparation method thereof, which is especially suitable for manufacturing automobile engine bottom guard plates, front-end modules, instrument panel frames and the like. Background technique [0002] The main function of the bottom guard of the automobile engine is to protect the engine bottom case and related parts from the impact and bump of gravel. , so there is also a flame retardant requirement for the material of the bottom guard plate. Traditionally, metal steel plates are used to make the bottom guard of automobile engines. Due to the high density of metal materials, the bottom guard is too heavy (usually weighing up to 10 kg), and the processing technology of the product is cumbersome, and the degree of freedom in design is seriously insufficient. Manufacturing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/04C08K7/14C08K7/22C08J3/22
Inventor 吉继亮孙刚周英辉李国明程文超李欣李志平丁超罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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