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In-situ polymerization method of composite material of polymerized cyclic butylene terephthalate and nano-montmorillonite

A technology of polycyclobutylene terephthalate and cyclobutylene terephthalate, which is applied in the field of in-situ polymerization of polycyclobutylene terephthalate and nano-montmorillonite composite materials, It can solve the problems of low strength, poor heat insulation and heat resistance, and easy corrosion, and achieve the effects of improved barrier performance, improved heat resistance, and good dimensional stability

Inactive Publication Date: 2009-11-04
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing composite materials have low strength, poor heat insulation and heat resistance, and are prone to corrosion and conduction.

Method used

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  • In-situ polymerization method of composite material of polymerized cyclic butylene terephthalate and nano-montmorillonite
  • In-situ polymerization method of composite material of polymerized cyclic butylene terephthalate and nano-montmorillonite
  • In-situ polymerization method of composite material of polymerized cyclic butylene terephthalate and nano-montmorillonite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0022] Dissolve 2 parts of nano-montmorillonite into trifluoroacetic acid, and keep stirring at about 80°C for 20 hours to dissolve slowly. Then dissolve 98 parts of CBT in acetone, and keep stirring at about 80°C to dissolve it. Pour the CBT solution into the dispersed montmorillonite solution and continue stirring for 20 h. The solvent was evaporated, and dried under vacuum at 80°C. Finally, the temperature of the dried CBT and nano-montmorillonite mixture is raised to 190° C., and the CBT is polymerized in situ to prepare a PBT / montmorillonite nanocomposite material.

Embodiment example 2

[0024] Dissolve 2 parts of nano-montmorillonite in acetone, and ultrasonically disperse at about 80°C for 20 hours to dissolve slowly. Then dissolve 98 parts of CBT in acetone and ultrasonically disperse at about 80°C to dissolve it. Pour the CBT solution into the dispersed montmorillonite solution, and continue ultrasonic dispersion for 20 h. The solvent was evaporated, and dried under vacuum at 80°C. Finally, the temperature of the dried CBT and nano-montmorillonite mixture is raised to 190° C., and the CBT is polymerized in situ to prepare a PBT / montmorillonite nanocomposite material.

Embodiment example 3

[0026] Dissolve 10 parts of nano-montmorillonite in chloroform, and keep stirring at about 80°C for 20 hours to dissolve slowly. Then dissolve 90 parts of CBT in acetone and keep stirring at around 80°C to dissolve it. Pour the CBT solution into the dispersed montmorillonite solution and continue stirring for 20 h. The solvent was evaporated, and dried under vacuum at 80°C. Finally, the temperature of the dried CBT and nano-montmorillonite mixture is raised to 190° C., and the CBT is polymerized in situ to prepare a PBT / montmorillonite nanocomposite material.

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Abstract

The invention relates to an in-situ polymerization method of a composite material of polymerized cyclic butylene terephthalate and nano-montmorillonite. The composite material comprises the following components by the weight portion: 50 to 99.99 of cyclic butylene terephthalate and 0.01 to 50 of nano-montmorillonite. In-situ polymerization of montmorillonite and cyclic butylene terephthalate which is a low molecular weight annular oligomer of the polymerized cyclic butylene terephthalate is performed by the in-situ polymerization method to prepare products. Compared with the prior art, the composite material has the advantages of high intensity, good barrier performance and heat resisting performance, good stability, water resistance, chemical corrosion resistance and the like.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to an in-situ polymerization method of polycyclobutylene terephthalate and nanometer montmorillonite composite material. Background technique [0002] Polymer / montmorillonite nanocomposites are a new class of composite materials. Since the montmorillonite sheets can form nano-scale dispersion in the polymer, the addition of montmorillonite can significantly improve the strength, modulus, barrier performance and heat resistance of the composite material. [0003] Ester polymers such as polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) are now increasingly used in packaging, auto parts, etc., and their annual volume consumption It has basically accounted for about 11% of the entire engineering plastics. Especially PBT, due to its high toughness, strength, good dimensional stability, water resistance, chemical corrosion resistance and non-co...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K3/34C08G63/78C08G63/183C08G63/199
Inventor 吴福梅
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD