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Preparation method of polyolefin/montmorillonite nano-composite material

A technology of nano-composite materials and montmorillonite, which is applied in the field of preparation of polyolefin/montmorillonite nano-composite materials, can solve problems such as poor thermal stability, easy decomposition of quaternary ammonium salts, and degradation of material properties, and achieve good heat resistance , Simplified preparation process, low volatility effect

Inactive Publication Date: 2008-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of the currently used alkyl quaternary ammonium salt modifier is poor, and the quaternary ammonium salt is easily decomposed during the extrusion blending process of the processed montmorillonite and polypropylene melt, resulting in the aggregation of montmorillonite sheets. material performance degradation

Method used

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  • Preparation method of polyolefin/montmorillonite nano-composite material
  • Preparation method of polyolefin/montmorillonite nano-composite material
  • Preparation method of polyolefin/montmorillonite nano-composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 1 gram of 1-methyl-3-tetradecyl imidazole chloride, add 2 grams of Na-montmorillonite, and grind at room temperature for 5 minutes to obtain organic montmorillonite. Then, 98 grams of polyethylene were added and melt-blended to obtain a polyethylene / montmorillonite composite material. The XRD characterization results showed that the composite material was a polyethylene / montmorillonite nanocomposite material. The results are shown in Table 1.

Embodiment 2

[0030] Take 5 grams of 1-methyl-3-hexadecyl imidazole chloride, add 10 grams of Na-montmorillonite, and grind for 60 minutes to obtain organic montmorillonite. Then, add 90 grams of polyethylene, carry out melt blending, obtain polyethylene / montmorillonite nanocomposite material, the result is shown in attached table 1.

Embodiment 3

[0032] Get 3 grams of 1-methyl-3-(4-ethyl-hexadecyl) imidazole tetrafluoroborate, add 3 grams of mixed montmorillonite (the weight percentage of Na-montmorillonite and Ca-montmorillonite is 80 : 20), room temperature grinding 30 minutes, then, add 97 grams of polyethylene, carry out melt blending, obtain polyethylene / montmorillonite nanocomposite material. The results are shown in Table 1.

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Abstract

The present invention discloses a preparation method of polyolefine / montmorillonite nano composite material. Under the condition of having no need of any solvent said invention adopts the following steps: using imidazole salt or pyridine salt ionic liquid as organic modifying agent, grinding said organic modifying agent and montmorillonite at room temperature to implement organization of the montmorillonite and form nano organic montmorillonite particles with ionic liquid intercalation, then melting and mixing the polyolefine and organic montmorillonite so as to form the invented polyolefine / montmorillonite nano composite material.

Description

technical field [0001] The invention belongs to the field of polyolefin nanocomposite materials, and in particular relates to a preparation method of polyolefin / montmorillonite nanocomposite materials. Background technique [0002] Polyolefin is a general-purpose synthetic material with the largest market share in the world, and is widely used in various fields such as agriculture, medical and health care, scientific research, military affairs and daily life. However, non-polar general-purpose polyolefin resins have disadvantages such as low strength, poor heat resistance, and poor barrier properties, which limit their application in the field of high-tech materials. [0003] Montmorillonite is a layered silicate containing exchangeable metal cations between the layers. The compatibility with polymers is significantly improved after organicization, and the formed polymer / montmorillonite nanocomposites (at least one dimension less than 100nm ), combine the rigidity and barri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/00C08K5/3445
Inventor 董金勇郭存悦
Owner INST OF CHEM CHINESE ACAD OF SCI
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