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Dynamic sulfurated retardant composite material of polypropylene without halogen, and preparation method

A technology of flame-retardant polypropylene and dynamic vulcanization, which is applied in the field of composite materials and its preparation, can solve problems such as not easy to extinguish, fast burning speed, property loss, etc., achieve good flame-retardant performance and mechanical properties, improve mechanical properties, increase The effect of cohesion

Inactive Publication Date: 2007-10-10
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, most polymer compounds are flammable and combustible materials. Once caught on fire, they burn quickly and are not easy to extinguish. Some will produce thick smoke and toxic gases, pollute the environment, endanger people's lives and cause property losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] The components and weight fractions of the dynamically vulcanized halogen-free flame-retardant polypropylene composite material are: 60 parts of polypropylene, 30 parts of EPDM rubber, 90 parts of halogen-free flame-retardant system, 30 parts of compatibilizer, and 4 parts of crosslinking agent. parts, 10 parts of additives.

[0014] The above components are fully mixed in a high-speed mixer, melted and blended by a twin-screw extruder, and undergo a dynamic vulcanization reaction. The temperature of the twin-screw extruder and the die is controlled at 160-220 ° C, and extruded to granulate. The dynamically vulcanized halogen-free flame-retardant polypropylene composite material of the present invention can be obtained.

[0015] The performance of the material of the present invention

[0016] Tensile strength (MPa): 13.81

[0017] Elongation at break (%): 337.5

[0018] Impact strength (KJ / m2): 50

[0019] Vertical burning time / s: ≤10

[0020] Flame retardant grad...

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Abstract

This invention relates to a method for preparing dynamic vulcanized polypropylene composite as halogen-free flame retardant. The dynamic vulcanized polypropylene composite is composed of: polypropylene 40-60 parts, ethylene-propylene terpolymerisate rubber 20-30 parts, halogen-free flame retardant system 50-100 parts, compatibilizer 10-30 parts, crosslinker 0.2-8 parts, and additives 1-10 parts. The method comprises: mixing the above components in a high-speed mixer, performing dynamic vulcanization by melt-blending in a twin screw extruder at 160-220 deg.C, extruding and granulating. The obtained dynamic vulcanizated polypropylene composite has good flame retardancy and mechanical properties, and can be used in the halogen-free flame-retarding environment.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a dynamically vulcanized halogen-free flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a general-purpose resin, light in weight, non-toxic, has excellent electrical insulation performance and chemical corrosion resistance, convenient molding and processing, and low price. It is widely used in electrical appliances, chemicals, machinery, textiles, Construction, furniture, food packaging and other industries. However, polypropylene is a flammable material, its oxygen index (LOI) is only 17.4 to 18.5, and a large number of molten droplets are generated during combustion, which can easily spread flames, which limits the application of PP in many fields. Materials are the pillars of the relationship between modern science and social development. Polymer materials have many inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/14C08J3/24B29C47/40B29B9/12C08L61/06C08L51/06C08L23/16B29C48/40
CPCB29C48/40
Inventor 梁兵
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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