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Basalt fiber polypropylene composite material enhanced by expansion flame retardants and method for preparing same

A basalt fiber, intumescent flame retardant technology, which is applied in the field of basalt fiber reinforced intumescent flame retardant polypropylene composite material and its preparation field, can solve problems such as toxic gas smoke, metal mold corrosion, environmental pollution, etc., and achieves improved mechanical properties and flame retardancy. Good effect, enhanced tensile strength and tensile modulus

Inactive Publication Date: 2013-02-20
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of modifying polypropylene with flame retardants is to add brominated flame retardants to polypropylene resins, but polypropylene with such flame retardants will not only cause corrosion of metal molds during processing, but also cause corrosion when burning. Emit toxic gas and smoke to pollute the environment

Method used

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  • Basalt fiber polypropylene composite material enhanced by expansion flame retardants and method for preparing same
  • Basalt fiber polypropylene composite material enhanced by expansion flame retardants and method for preparing same
  • Basalt fiber polypropylene composite material enhanced by expansion flame retardants and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of flame retardant masterbatch: 12 kg of bimodal polyethylene PE FB2230 (Borealis), 0.5 kg of dilauryl thiodipropionate, 0.5 kg of erucamide, 1 kg of calcium stearate, 85.5 kg of melamine polyphosphate Salt and pentaerythritol compound flame retardant ANTI-610 (Shanghai Petrochemical Research Institute) is melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, extruded and granulated, and the extrusion temperature is 180 ° C ~ 230 ° C , and finally made a flame retardant masterbatch.

[0028] 58 kg of polypropylene PP M2600R (Shanghai Petrochemical), 0.8 kg of heat stabilizer p-phenylenediamine, 0.5 kg of heat stabilizer dilauryl thiodipropionate, 0.3 kg of processing aid erucamide, 5 kg of maleic anhydride The grafted polyethylene was melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1. 12 kg of basalt chopped fiber CBF15-12 (Shanxi Baseout Technology), and 23.4 kg of flame reta...

Embodiment 2

[0029] Preparation of flame retardant masterbatch: 36 kg of bimodal polyethylene PE FB2230 (Borealis), 0.5 kg of stabilizer diphenylamine, 0.5 kg of stabilizer dihydroquinoline, 0.5 kg of erucamide, 1 kg of calcium stearate, 60 kilograms of melamine polyphosphate and pentaerythritol compound flame retardant 50A-2 (Shandong Murray) were melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, extruded and granulated, and the extrusion temperature was 180 ℃ ~ 230 ℃, finally made the flame retardant masterbatch.

[0030] 32 kg of polypropylene PP M2600R (Shanghai Petrochemical), 1.5 kg of heat stabilizer diphenylamine, 1 kg of processing aid calcium stearate, 2.5 kg of maleic anhydride grafted polypropylene and ethylene-α-ethylene-octene copolymer PC-8C (Guangdong Bochen) is melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, 25 kg of basalt chopped fiber CBF15-12 (Shanxi Bassett Technology), 38 kg of ...

Embodiment 3

[0032] Preparation of flame retardant masterbatch: 22 kg of bimodal polyethylene PE FB2310 (Borealis), 0.5 kg of stabilizer dilauryl thiodipropionate, 0.5 kg of stabilizer dihydroquinoline, 1 kg of processing aid stearin Zinc acid, 1 kg of processing aid erucamide, 75 kg of amine polyphosphate and pentaerythritol compound flame retardant FP-2200 (ADK) were melt mixed and dispersed in a single-screw extruder with a length-to-diameter ratio of 35:1. granulation, the extrusion temperature is 180°C to 230°C, and finally the flame retardant masterbatch is obtained.

[0033] 30 kg of polypropylene PP S900 (Lanzhou Petrochemical), 0.2 kg of heat stabilizer dilauryl thiodipropionate, 0.3 kg of heat stabilizer dihydroquinoline, 0.5 kg of processing aid erucamide, 2 kg of maleic anhydride Branched polypropylene is melted, mixed and dispersed in a twin-screw extruder with an aspect ratio of 40:1, 35 kg of basalt chopped fiber CBF15-12 (Shanxi Bassett Technology), and 32 kg of flame retar...

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Abstract

The invention belongs to the field of novel composite materials and particularly relates to a basalt fiber polypropylene composite material enhanced by expansion flame retardants and a method for preparing the same. The polypropylene composite material comprises, by weight, 48.5% to 78.5% of polypropylene, 0.3% to 2% of heat stabilizers, 0.2% to 1% of processing agents, 10% to 40% of flame retardant master batches, 1% to 5% of compatilizers and 10% to 35% of basalt fibers. Mechanical properties of the polypropylene composite material are improved, for example, bending strength, tensile strength and tensile modulus, and particularly the bending strength is improved by 39%, the excellent mechanical properties enable the polypropylene composite material can be used in certain special occasions, such as fields of aerospace, metallurgy and chemical industry, auto parts and the like. As expansion flame retardants are added, the flame retardant effect of the polypropylene composite material is good, and poisonous gas and smog cannot be emitted during combustion to pollute the environment.

Description

technical field [0001] The invention belongs to the field of novel composite materials, and in particular relates to a basalt fiber reinforced expanded flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] The raw material used for basalt fiber is the most widely distributed basalt in nature. Compared with high-tech fibers such as carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene fiber, basalt fiber has the characteristics of high strength and high modulus of high-tech fibers. Basalt fiber also has excellent properties such as good high temperature resistance, anti-oxidation, anti-radiation, heat and sound insulation, good filterability, high compressive strength and shear strength, suitable for use in various environments, and good cost performance. It is a pure Natural inorganic non-metallic materials. Therefore, basalt fiber can be used as a reinforcing medium to make various composite mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/10C08K5/3492C08K5/053C08K3/32C08J3/22
Inventor 杨泽夏建盟何威邵华肖鹏
Owner SHANGHAI KINGFA SCI & TECH
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