Star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and preparation method thereof

A technology of silsesquioxane and sulfonated styrene, used in electrochemical generators, fuel cells, electrical components, etc. The effect of hydrophilicity and superior thermal stability

Inactive Publication Date: 2013-06-26
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The commonly used proton exchange membrane (PEM) is the Nafion membrane produced by DuPont. When the operating temperature is higher than 80°C or the relative

Method used

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  • Star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and preparation method thereof
  • Star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and preparation method thereof
  • Star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example

[0026] Implementation 1:

[0027] (1) Step 1: Add 600ml of anhydrous methanol, 24ml of concentrated hydrochloric acid, and 30ml of γ-chloropropyltrimethoxysilane to a 1000ml three-necked flask. Stir continuously and react at 40℃ for 5 days to obtain a white solid. Use methanol Rinse for several times and place in a vacuum oven at 50℃ to dry for 48h. Synthesis process such as figure 1 Shown

[0028] Step 2: Combine the measured octachloropropyl silsesquioxane (0.2g), pentamethyldivinyltriamine (0.15ml), cuprous chloride (0.015g), methyl methacrylate (20ml) ) And toluene (20ml) were respectively added to a 100ml three-necked flask equipped with a condenser and a magnetic stirrer, stirred under nitrogen protection, the temperature was raised to 70 ℃, and then gradually heated to 110 ℃, under constant temperature conditions to react to The viscosity of the system increased significantly. The product in the container was dissolved with a large amount of tetrahydrofuran to obtain a pol...

Example

[0042] Implementation 2:

[0043] (1) Step 1: Add 600ml of anhydrous methanol, 24ml of concentrated hydrochloric acid, and 30ml of γ-chloropropyltrimethoxysilane to a 1000ml three-necked flask. Stir continuously and react at 40℃ for 5 days to obtain a white solid. Use methanol Rinse for several times and place in a vacuum oven at 50℃ to dry for 48h. Synthesis process such as figure 1 Shown

[0044] Step 2: Combine the measured octachloropropylsilsesquioxane (0.4g), pentamethyldivinyltriamine (0.30ml), cuprous chloride (0.030g), methyl methacrylate (40ml) ) And toluene (40ml) were added to a 250ml three-necked flask equipped with a condenser and a magnetic stirrer, and stirred under nitrogen protection. The temperature was raised to 70°C, and then gradually heated to 110°C. The reaction was carried out under constant temperature conditions. The viscosity of the system increased significantly. The product in the container was dissolved with a large amount of tetrahydrofuran to obta...

Example

[0058] Implementation 3:

[0059] (1) Step 1: Add 600ml of anhydrous methanol, 24ml of concentrated hydrochloric acid, and 30ml of γ-chloropropyltrimethoxysilane to a 1000ml three-necked flask. Stir continuously and react at 40℃ for 5 days to obtain a white solid. Use methanol Rinse for several times and place in a vacuum oven at 50°C to dry for 48 hours. Synthesis process such as figure 1 Shown

[0060] Step 2: Put the measured octachloropropyl silsesquioxane (0.2g), pentamethyldivinyltriamine (0.15ml), cuprous chloride (0.015g), methyl methacrylate (20ml) ) And toluene (20ml) were respectively added to a 100ml three-necked flask equipped with a condenser and a magnetic stirrer, stirred under nitrogen protection, the temperature was raised to 70°C, and then gradually increased to 110°C, and the temperature was kept constant. The viscosity of the system increased significantly. The product in the container was dissolved with a large amount of tetrahydrofuran to obtain a polymer s...

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Abstract

The invention relates to a star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and a preparation method thereof. The star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer is a star hybrid macromolecule which adopts the silsesquioxane as a core and grafted acrylic ester segmented styrene as an arm. The synthesis method of the star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer comprises the following steps of: synthesizing star silsesquioxane-grafted acrylic ester-styrene segmented copolymer by adopting silsesquioxane containing active chlorine as an initiator, selecting several types of acrylic ester, styrene and the like as comonomer and adopting cuprous chloride/pentamethyl divinyl triamine as a catalytic system through a two-step atom transfer free radical polymerization method; obtaining star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer through vitriolization; and obtaining star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer macromolecules of different structures by controlling the length of each POSS (Polyhedral Oligomeric Silsesquioxane) star arm, i.e., the constitution and the length of each block, so that the performances of the star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and the proton exchange membrane thereof are adjusted.

Description

technical field [0001] The invention relates to a star-shaped silsesquioxane grafted acrylate-sulfonated styrene block copolymer and a preparation method thereof, and a star-shaped silsesquioxane grafted acrylate-sulfonated styrene block copolymer A method for the preparation of proton exchange membranes. Background technique [0002] Due to the characteristics of high energy conversion rate and low carbon emission, fuel cell equipment relying on hydrogen energy has gradually become one of the most potential future clean electric power sources. As a new type of electric energy, polymer electrolyte fuel cells have the advantages of high energy density, short start-up time, low operating temperature, and zero carbon emissions. shows great potential for development. Polymer electrolyte fuel cells are mainly composed of three parts: anode, cathode and proton exchange membrane. The proton exchange membrane mainly plays the role of conducting protons and isolating the cathode a...

Claims

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Application Information

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IPC IPC(8): C08F293/00C08F212/08C08F220/14C08F220/18C08F8/36C08J5/22H01M8/02H01M8/1039H01M8/1072H01M8/1081
CPCY02E60/50
Inventor 陈芳马晓燕潘龙尚蓓蓉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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