Polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide nanocomposite material and preparation method thereof

A technology of polymethyl methacrylate and methyl methacrylate, which is applied in the field of polymethyl methacrylate-fatty alcohol maleate sodium salt-aluminum oxide nanocomposite material and its preparation field, can solve the problem of surface Strong effect, complex operation, easy agglomeration and other problems, achieve uniform and stable dispersion state, and solve serious agglomeration problems

Inactive Publication Date: 2019-03-05
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small particle size, large specific surface area, large surface energy and strong surface interaction of nanoparticles, they are easy to agglomerate and have poor dispersion.
Most of the surface modification methods of nanoparticles reported so far are complex in operation and cumbersome in steps, which brings inconvenience to the preparation of polymer-based nanocomposites.

Method used

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  • Polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide nanocomposite material and preparation method thereof
  • Polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide nanocomposite material and preparation method thereof
  • Polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of polymethyl methacrylate-alumina nanocomposite emulsion with anionic monomer MAMS as emulsifier: Weigh 0.5g MAMS, 0.057g initiator KPS, dissolve in 50mL deionized water, and then weigh Add 10g of monomeric methyl methacrylate into a 250mL four-neck flask, stir and pre-emulsify at a speed of 700rpm for 2h, and add the pre-emulsion to a constant pressure dropping funnel for use;

[0044] (2) Add 0.5g Al 2 o 3 Nanoparticles and 0.5g of anionic monomer MAMS were dispersed in 50mL of deionized water, and ultrasonically dispersed with a JY92-II N-type ultrasonic cell pulverizer. The set parameters were: power 600W, working time 3s, intermittent time 2s, ultrasonic in ice bath environment After 30 minutes, add the ultrasonic dispersion liquid into a 250mL four-necked flask; then weigh 10g of methyl methacrylate, add it to a 250mL four-necked flask, pre-emulsify in a water bath at room temperature for 0.5h, set the stirring speed to 700rpm, after 0.5h, start ...

Embodiment 2

[0048] (1) Preparation of polymethyl methacrylate-alumina nanocomposite emulsion with anionic monomer MAMS as emulsifier: Weigh 0.4g MAMS, 0.057g initiator AIBN, dissolve in 50mL deionized water, and then weigh Add 10g of monomeric methyl methacrylate into a 250mL four-neck flask, stir and pre-emulsify at a speed of 700rpm for 2h, and add the pre-emulsion to a constant pressure dropping funnel for use;

[0049] (2) Add 0.5g Al 2 o 3 Nanoparticles and 0.6g of anionic monomer MAMS were dispersed in 50mL of deionized water, and ultrasonically dispersed with a JY92-II N-type ultrasonic cell pulverizer. The set parameters were: power 600W, working time 3s, intermittent time 2s, ultrasonic in ice bath environment After 30 minutes, add the ultrasonic dispersion liquid into a 250mL four-necked flask; then weigh 10g of methyl methacrylate, add it to a 250mL four-necked flask, pre-emulsify in a water bath at room temperature for 0.5h, set the stirring speed to 700rpm, after 0.5h, start...

Embodiment 3

[0053] (1) Preparation of polymethyl methacrylate-alumina nanocomposite emulsion with anionic monomer MAMS as emulsifier: Weigh 0.6g MAMS, 0.057g initiator ABVN, dissolve in 50mL deionized water, and then weigh Add 10g of monomeric methyl methacrylate into a 250mL four-neck flask, stir and pre-emulsify at a speed of 700rpm for 2h, and add the pre-emulsion to a constant pressure dropping funnel for use;

[0054] (2) Add 0.5g Al 2 o 3 Nanoparticles and 0.4g of anionic monomer MAMS were dispersed in 50mL of deionized water, and ultrasonically dispersed with a JY92-II N-type ultrasonic cell pulverizer. The set parameters were: power 600W, working time 3s, intermittent time 2s, ultrasonic in an ice bath environment After 30 minutes, add the ultrasonic dispersion liquid into a 250mL four-necked flask; then weigh 10g of methyl methacrylate, add it to a 250mL four-necked flask, pre-emulsify in a water bath at room temperature for 0.5h, set the stirring speed to 700rpm, after 0.5h, st...

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Abstract

The invention provides polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide nanocomposite material and a preparation method thereof. The method is as below: using the PMMA andsodium maleic acid fatty alcohol ester as copolymerization monomers, using sodium maleic acid fatty alcohol ester as an emulsifier, and adding an initiator to prepare a pre-emulsion; with sodium maleic acid fatty alcohol ester as a dispersing agent, pre-dispersing nano-Al2O3 in an aqueous solution, and adding PMMA to the above dispersion liquid to form an emulsion polymerization system; heating the emulsion polymerization system to an initiation temperature, adding an initiator, and during the polymerization, gradually dropwise adding the pre-emulsion prepared in the step 1 to the emulsion polymerization system; and conducting complete reaction to obtain the polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide copolymer emulsion. In the copolymer emulsion and copolymer microsphere powder, the aluminum oxide is dispersed at a nano level, and the dispersion state is uniform and stable; therefore, the method solves the serious agglomeration problem of the nanoparticles in the polymethyl methacrylate-sodium maleic acid fatty alcohol ester-aluminum oxide nanocomposite material.

Description

technical field [0001] The invention relates to the technical field of composite materials, more specifically to a polymethyl methacrylate-fatty alcohol maleate sodium salt-aluminum sesquioxide nanocomposite material and a preparation method thereof, wherein polymethyl methacrylate (PMMA) as the substrate, the anionic monomer lauryl maleate sodium salt (MAMS) disperses and stabilizes aluminum oxide (Al 2 o 3 ) nanoparticles to prepare highly dispersed PMMA-based nanocomposites. Background technique [0002] The polymer-based nanocomposite refers to a composite material that uses a polymer as a matrix, and the size of the dispersed phase is less than 100 nm in at least one dimension. Polymer-based nanocomposites combine the advantages of polymers and nanomaterials, realize the optimization and complementarity in performance, and have broad research and application prospects. However, due to the small particle size, large specific surface area, large surface energy and stro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F222/16C08F2/26C08F2/44C08K3/22
CPCC08F2/26C08F2/44C08F220/14C08K3/22C08K2003/2227C08K2201/011C08F222/16
Inventor 郑俊萍丁永陈雨
Owner TIANJIN UNIV
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