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Nano composite of unsaturation poly-ester/active rubber/montmorllonite and preparation process thereof

A technology of nano-composite materials and active rubber, which is applied in the field of high-performance nano-composite materials and cutting-edge new materials to achieve the effects of improving thermal stability and aging resistance, strong interaction, excellent mechanical properties and heat resistance

Inactive Publication Date: 2007-05-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing methods for preparing unsaturated polyester nanocomposites, the invention provides a method for preparing unsaturated polyester / active rubber / phyllosilicate nanocomposites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) modification treatment of montmorillonite (parts by mass)

[0030] Disperse 5 parts of montmorillonite with a total cation exchange capacity of 90 milliequivalents / 100 g in water, soak for 28 hours, heat up to 70 °C, add 1 part of intercalation agent solution, and react at constant temperature for 7 hours. The precipitate was washed with water, filtered with suction after standing still, washed, repeated 10 times, and dried under vacuum at 80°C. The intercalation agent comprises 0.6 parts of polyvinyl alcohol and 0.4 parts of phosphoric acid, hydrochloric acid, sulfuric acid, acetic acid, phthalic acid or isophthalic acid.

[0031] (2) Preparation of active rubber (parts by mass)

[0032] Prepolymerization reaction: after heating and dissolving 65 parts of polyethylene glycol (PEG) or polyethylene adipate, add 5 parts of toluene diisocyanate or diphenylmethane diisocyanate, at 65°C (protected by inert gas) The reaction was stirred for 5.5h.

[0033]End-capping re...

Embodiment 2

[0037] (1) modification treatment of montmorillonite (parts by mass)

[0038] First disperse 30 parts of montmorillonite with a total cation exchange capacity of 100 milliequivalents / 100 g into water, soak for 24 hours, heat up to 60°C, add 10 parts of dodecyltrimethylammonium bromide solution as an intercalation agent, and react at constant temperature 6h, a white precipitate was precipitated, and the white precipitate was washed with water until it was washed with AgNO 3 Br not detected - , after standing still, suction filtration, washing, repeated 8 times, and vacuum drying at 100°C.

[0039] (2) Preparation of active rubber (parts by mass)

[0040] Prepolymerization reaction: After heating and dissolving 80 parts of polyethylene glycol (PEG) or polyethylene adipate, add 10 parts of toluene diisocyanate or diphenylmethane diisocyanate, at 50°C (protected by inert gas) The reaction was stirred for 6h.

[0041] End-capping reaction: Add 7 parts of hydroxyethyl methacryla...

Embodiment 3

[0045] (1) modification treatment of montmorillonite (parts by mass)

[0046] Disperse 50 parts of montmorillonite with a total cation exchange capacity of 90-110 milliequivalents / 100 g in water, soak for 36 hours, heat up to 80°C, add 20 parts of cetyltrimethylammonium bromide as an intercalation agent solution, 10 parts of octadecyltrimethylammonium bromide, reacted at constant temperature for 8 hours, a white precipitate was precipitated, and the white precipitate was washed with water until it was washed with AgNO 3 Br not detected - , after standing still, suction filtration, washing, repeated 6 times, and vacuum drying at 90°C.

[0047] (2) Preparation of active rubber (parts by mass)

[0048] Prepolymerization reaction: After heating and dissolving 75 parts of polyethylene glycol (PEG) or polyethylene adipate, add 20 parts of toluene diisocyanate or diphenylmethane diisocyanate, at 70°C (protected by inert gas) The reaction was stirred for 3h.

[0049] End-capping r...

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Abstract

The invention is a unsaturated polyester / active rubber / montmorillonite composite and its preparing method, adding modified montmorillonite and reactive active rubber in the unsaturated polyester, then making solidifying reaction at room temperature, forming a whole network structure by copolymerizing and cross-linking reaction, and forming intercalated nano compound with the montmorillonite, thus achieving the cooperative effect of reinforcing, flexibilizing and improving thermal stability, and implementing high performance of the unsaturated polyester and its composite. The invention can be widely applied to the industries, such as automobiles, building materials, electronics, home appliances, machinery, packaging, etc as well as high-new technique fields such as electronic information, bio-technique, aviation and spaceflight.

Description

technical field [0001] The high-performance nanocomposite material of the present invention belongs to cutting-edge new materials, and can be widely used in industries such as automobiles, building materials, electronics, home appliances, machinery, packaging, military industry, and high-tech fields such as electronic information, biotechnology, aerospace, and the national economy. All departments are closely related. Background technique [0002] Unsaturated polyester is currently the resin matrix with the largest use and output in the field of composite materials, and is most widely used in the FRP industry. However, its toughness, heat resistance, and dimensional stability are poor, and its rigidity, strength, and aging resistance are not ideal, which limits its application range. [0003] In the past three decades, there have been more and more technologies to improve the mechanical, electrical, thermal, optical and processing properties o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/91C08K5/01C08L67/06
Inventor 游长江贾德民
Owner SOUTH CHINA UNIV OF TECH
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