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Detaching type polymer/montmorillonite composite material and preparing method thereof

A nano-composite material and montmorillonite technology, which is applied in the field of preparation of exfoliated polymer/montmorillonite nano-composite materials, can solve the problem of weakening the interaction between polymer and montmorillonite, increasing the density of modifier, and adversely affecting montmorillonite. Soil dispersion and other problems, to achieve the effect of easy promotion, quick effect, and low production input cost

Inactive Publication Date: 2004-08-25
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, we found in our work that the peeling of the montmorillonite layer depends on the good interaction between the montmorillonite and the polymer, and the use of more modifiers in the modified montmorillonite will increase the gap between the montmorillonite layers. The density of the modifier prevents the polymer from entering the montmorillonite layer or weakens the interaction between the polymer and the montmorillonite, which is not conducive to the dispersion of the montmorillonite

Method used

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  • Detaching type polymer/montmorillonite composite material and preparing method thereof
  • Detaching type polymer/montmorillonite composite material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 24 grams of montmorillonite with a cation exchange capacity of 120meq / 100g was stirred in 500ml of deionized water at high speed for 0.5h to form a stable suspension system. Add 17.3 grams of cation exchanger octadecylamine to 500 ml of deionized water, add equimolar protonating agent hydrochloric acid, and emulsify at a high speed to form a uniformly dispersed emulsion. The suspension and emulsion heated to 60° C. were mixed under high-speed stirring for 10 minutes, precipitated, filtered, vacuum-dried and pulverized to obtain organic montmorillonite (OM1). Melt intercalation of polyurethane and organic montmorillonite in traditional polymer mixing or extrusion equipment to directly obtain polymer / montmorillonite nanocomposite PUS1, its wide-angle X-ray results (see attached table 1) It shows that PUS1 has an exfoliated structure. Change the dosage of cation exchanger to be 1.0CEC, 1.5CEC, 2.0CEC, 2.5CEC respectively, namely respectively 28.8 grams, 43.2 grams, 57.6 g...

Embodiment 2

[0025] 40 grams of montmorillonite with a cation exchange capacity of 50 meq / 100 g was stirred in 1000 ml of deionized water at high speed for 1 hour to form a stable suspension system. Add 12 grams of cation exchanger cetyltrimethylammonium bromide into 200 ml of deionized water, add equimolar protonating agent sulfuric acid, and emulsify at high speed to form a uniformly dispersed emulsion. The suspension and emulsion heated to 80° C. were mixed under high-speed stirring for 30 minutes, precipitated, filtered, vacuum-dried and pulverized to obtain organic montmorillonite. Melt intercalation of polyamide 6 and organic montmorillonite in traditional polymer mixing or extrusion equipment to directly obtain polymer / montmorillonite nanocomposites, the (001 ) diffraction peaks disappear, indicating that montmorillonite is well dispersed in these polymers and has an exfoliated structure.

Embodiment 3

[0027] 16 grams of montmorillonite with a cation exchange capacity of 150 meq / 100 g was stirred in 1000 ml of deionized water at high speed for 2 hours to form a stable suspension system. Add 14.4 grams of cation exchanger cetyltrimethylammonium bromide to 300 ml of deionized water, add equimolar protonating agent sulfuric acid, and emulsify at high speed to form a uniformly dispersed emulsion. The suspension and emulsion heated to 90° C. were mixed under high-speed stirring for 60 minutes, precipitated, filtered, vacuum-dried and pulverized to obtain organic montmorillonite. Melt intercalation of polyamide 66 and organic montmorillonite in traditional polymer mixing or extrusion equipment to directly obtain polymer / montmorillonite nanocomposites, the (001 ) diffraction peaks disappear, indicating that montmorillonite is well dispersed in these polymers and has an exfoliated structure.

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Abstract

The present invention relates to a separable polymer / montmorillonite nano composite material and its preparation method. The selected polymer is polyamide, acid anhydridized polypropylene, acid anhydridized polyethylene, polyurethane, polystyrene, acid anhydridized ethylene-propylene rubber, nitrile rubber, SBR rubber or silicon rubber or polymer blend polypropylene / polyamide, polypropylene / acid anhydridized polypropylene, polyethylene / acid anhydridized polyethylene, polyamide / acid anhydrized polypropylene or polyurethane / acid anhydridized polypropylene, and the organic modified montmorillonite is formed from montmorillonite, cationite primary amine, secondary amine or tertiary amine. The dose of modification agent is seriously limited below the ion exchange capacity of montmorillonite, then the polymer and modified montmorillonite can be directly molten and mixed so as to obtain the invented product.

Description

technical field [0001] The invention belongs to a stripping polymer / montmorillonite nanocomposite material; the invention also relates to a preparation method of a stripping polymer / montmorillonite nanocomposite material. Background technique [0002] Using a small amount of one-dimensional nano-sized layered inorganic components to modify the polymer can significantly improve the rigidity and strength of the polymer, while the specific gravity and transparency of the material are basically unchanged compared with the polymer, and can also greatly improve the polymerization. Thermal stability, flame retardancy and barrier properties of materials. The effective exfoliation and dispersion of montmorillonite in the polymer plays a key role in improving the performance of the material. [0003] There are many methods for the preparation of polymer / montmorillonite nanocomposites, among which the melting method is considered to be the most promising because it can use traditional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08L9/00C08L25/06C08L33/00C08L75/04C08L77/00
Inventor 唐涛赵忠夫黄葆同
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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