Laminated silica synergistic flame retardant reinforced polypropylene composite material, and preparation method thereof

A composite material and synergistic flame retardant technology, which is applied in the field of lamellar silica synergistic flame retardant reinforced polypropylene composite material and its preparation, and can solve the problems of high cost, high price, and non-compliance with environmental protection requirements.

Inactive Publication Date: 2019-07-02
芜湖万隆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, halogen-based flame retardants and intumescent flame retardants are mostly used in the market to meet the flame-retardant requirements of materials. Although the cost of halogen-based flame retardants is not high, they will release a large amount of corrosive and toxic gases when burned, which does not meet the requirements of flame retardant materials. Environmental protection requirements, while intumescent flame retardants have good flame retardant performance, are safe and non-toxic, but they are expensive and costly

Method used

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Examples

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preparation example Construction

[0025] The present invention also provides a method for preparing a sheet-layer silica synergistic flame-retardant reinforced polypropylene composite material, comprising:

[0026] Inorganic nano-sheet silica, polypropylene, silane coupling agent, compatibilizer, intumescent halogen-free flame retardant, and antioxidant are melt-blended, extruded, and granulated through a twin-screw extruder. drying, and then injection molding by an injection molding machine to obtain a sheet-layer silica synergistic flame-retardant reinforced polypropylene composite material. The extrusion temperature in the twin-screw extruder is preferably 170°C-190°C, and the injection molding temperature of the injection molding machine is preferably 180-190°C.

Embodiment 1

[0029] A method for preparing a sheet silica synergistic flame-retardant reinforced polypropylene composite material, comprising the following steps:

[0030] After the natural inorganic silica is dedusted and impurity removed, take 80 parts of inorganic silica, dispersant JS-V966: 4 parts, 16 parts of deionized water, and grind for 12 hours by high-speed wet method at a speed of 600r / min, and grind to inorganic flakes layer powder, and spray-dried at 120° C. for 12 hours to obtain inorganic nano-sheet silica.

[0031] 5 parts of inorganic nano-sheet silica prepared above (sheet width is 200nm), 80 parts of polypropylene, silane coupling agent KH560: 2.5 parts, compatibilizer SAG: 2 parts, intumescent halogen-free flame retardant Exolit AP422 : 10 parts, antioxidant zm-1010: 0.5 parts, the raw materials are melt blended, extruded, granulated by twin-screw extruder at 180°C, dried at 120°C, and then injected by injection molding machine at 185°C to obtain a sheet Silica synerg...

Embodiment 2

[0034] A method for preparing a sheet silica synergistic flame-retardant reinforced polypropylene composite material, comprising the following steps:

[0035] After the natural inorganic silica is dedusted and impurity removed, take 80 parts of inorganic silica, dispersant JS-V966: 4 parts, 16 parts of deionized water, and grind for 12 hours by high-speed wet method at a speed of 600r / min, and grind to inorganic flakes layer powder, and spray-dried at 120° C. for 12 hours to obtain inorganic nano-sheet silica.

[0036] 10 parts of inorganic nano-sheet silica prepared above (sheet width is 200nm), 75 parts of polypropylene, silane coupling agent KH560: 2.5 parts, compatibilizer SAG: 2 parts, intumescent halogen-free flame retardant Exolit AP422 : 10 parts, antioxidant zm-1010: 0.5 parts, the raw materials are melt blended, extruded, granulated by twin-screw extruder at 180°C, dried at 120°C, and then injected by injection molding machine at 185°C to obtain a sheet Silica syner...

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Abstract

The invention provides a laminated silica synergistic flame retardant reinforced polypropylene composite material, and a preparation method thereof, and belongs to the field of high molecular engineering plastic. The laminated silica synergistic flame retardant reinforced polypropylene composite material comprises, by weight, 60 to 80 parts of polypropylene, 2 to 25 parts of inorganic nano-sheet silica, 0.5 to 5 parts of silane coupling agent, 0.5 to 2 parts of a compatibilizer, 5 to 25 parts of an intumescent halogen-free flame retardant, and 0.5 to 2 parts of an antioxidant; the sheet spreadwith of the inorganic nano-sheet silica is 100 nm to 2000 nm. The invention also provides the preparation method of a laminated silica synergistic flame retardant reinforced polypropylene composite material. The composite material possesses good flame resistance, and enhanced polypropylene matrix resin mechanical properties, the performance of polypropylene materials is improved, and the application range is widened.

Description

technical field [0001] The invention relates to the field of polymer engineering plastics, in particular to a sheet-layer silica synergistic flame-retardant reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene is a polymer material with light weight, non-toxic, odorless, good electrical insulation and strong chemical corrosion resistance, which is widely used in many industries. However, polypropylene is flammable, and molten droplets are produced during the combustion process, causing the flame to spread rapidly, which brings many safety hazards to people. A large number of studies and experiments have proved that adding intumescent halogen-free flame retardants to the polypropylene matrix can greatly improve the flame-retardant grade of polypropylene. The addition of intumescent halogen-free flame retardants is halogen-free, low-smoke, safe and non-toxic, and meets environmental protection requirements, ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L25/14C08K3/36C08K5/00C08K3/016
CPCC08K2201/016C08L23/12C08L2201/02C08L2201/22C08L25/14C08K3/36C08K5/0066C08K3/016
Inventor 周光远李璐姜国伟
Owner 芜湖万隆新材料有限公司
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