Method for preparing Inserted layers type nano composite material of polypropylene/montmorillonite

A nano-composite material and polypropylene technology is applied in the field of preparation of organically modified montmorillonite filled polypropylene to form intercalated nano-composite materials, and achieves the effect of good comprehensive performance

Inactive Publication Date: 2003-10-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is no satisfactory preparation method in the prior art

Method used

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  • Method for preparing Inserted layers type nano composite material of polypropylene/montmorillonite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 100g polypropylene, 4.2g maleic anhydride and 0.84g dibenzoyl peroxide are blended, extruded and granulated with a twin-screw extruder, and the extrusion temperature is 160-190°C to obtain graft modified polypropylene; then 100g Graft modified polypropylene is mixed with 25g of organically modified montmorillonite, stirred with a high-speed mixer, extruded and granulated with a twin-screw extruder, and the extrusion temperature is 180-220°C to obtain a masterbatch; then 100g of polypropylene Mix 5.9 g of the masterbatch, stir with a high-speed mixer, extrude and granulate with a twin-screw extruder, and the extrusion temperature is 180-220° C. to obtain the product. Its performance is shown in Table 1.

Embodiment 2

[0031] 100g polypropylene, 1.2g maleic acid, 0.14g dicumyl peroxide, extrude and granulate with a twin-screw extruder, and the extrusion temperature is 160-190°C to obtain grafted modified polypropylene; then graft 100g Modified polypropylene is mixed with 15g of organically modified montmorillonite, stirred with a high-speed mixer, extruded and granulated with a twin-screw extruder, and the extrusion temperature is 180-220°C to obtain a masterbatch; then 100g of polypropylene 17.6g The masterbatch is mixed, stirred with a high-speed mixer, extruded and granulated with a twin-screw extruder, and the extrusion temperature is 180-220°C to obtain the product. Its performance is shown in Table 1.

Embodiment 3

[0033] 100g of polypropylene, 10g of acrylic acid, and 1.0g of dibenzoyl peroxide are blended, extruded and granulated with a twin-screw extruder, and the extrusion temperature is 160-190°C to obtain graft-modified polypropylene; Mix permanent polypropylene with 35g of organically modified montmorillonite, stir with a high-speed mixer, extrude and granulate with a twin-screw extruder, and the extrusion temperature is 180-220°C to obtain a masterbatch; then mix 100g of polypropylene with 33.3g of masterbatch Mix the materials, stir with a high-speed mixer, extrude and granulate with a twin-screw extruder, and the extrusion temperature is 180-220°C to obtain the product. Its performance is shown in Table 1.

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Abstract

An intercalation-type nano-class composite polypropene / montmorillonite material is prepared from isotactic polypropylene, modified organic montmorillonite with different layer gaps, graft modified polypropylene and graft modified polypropylene copolymer through fusing and intercalating. It has the obviously improved mechanical performance and machinability.

Description

technical field [0001] The invention relates to a preparation method of organically modified montmorillonite filled with polypropylene to form an intercalated nanocomposite material. Background technique [0002] The patents related to the prior art of the present invention are CN1163288A, CN1247206A, CN1267682A, US5910523. Patent CN1163288A is about montmorillonite filled with silicone rubber to form a composite material. Patent CN1247206A adopts the direct melt blending method, and uses the montmorillonite filled polypropylene with cation-exchanged cetyltrimethylammonium bromide or hexaaminocaproic acid to form a composite material, adopts the direct melt blending method, and the mixing of materials The homogeneity is poor and the resulting composites have relatively low properties. Patents CN1267682A and US5910523 use liquid-phase intercalation reaction graft-modified polypropylene to insert montmorillonite sheets in a liquid-phase reactor to obtain polypropylene / montmo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40C08K3/34C08L51/06
Inventor 任杰顾书英
Owner TONGJI UNIV
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