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Hydrophilic monomer ratio controlled synthetic technology for hydrophobic high strength resin

A technology of hydrophilic monomer and synthesis process, which is applied in the field of synthesis technology of hydrophobic high-strength resin, can solve the problems of polymer brittleness and reduced tensile strength, and achieves high synthesis efficiency, lower synthesis cost and simple synthesis steps. Effect

Inactive Publication Date: 2012-05-23
袁俊海
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AI Technical Summary

Problems solved by technology

If the water absorption of the resin is controlled by increasing the crosslinking density, the polymer will become brittle and the tensile strength will decrease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] The synthesis process of a hydrophobic high-strength resin that controls the proportion of hydrophilic monomers involved in the present invention comprises the following steps:

[0034] (a) Put the sodium-based bentonite in a beaker, add water and stir until the bentonite is fully hydrated and dispersed, and let stand to make it fully hydrated;

[0035] (b) Add acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, hydrophobic monomer, sodium bentonite and a small amount of distilled water into the reaction vessel, and control the concentration of acrylamide and 2-acrylamido-2-methylpropanesulfonic acid. The mass ratio of propanesulfonic acid is 3: 2~1: 2, stir with slight heat to make it all dissolve;

[0036] (c) After cooling down, add acrylic acid partially neutralized by NaOH, and pass through nitrogen to exhaust oxygen, add initiator and crosslinking agent solution, heat up for pre-reaction, and increase the stirring speed;

[0037] (d) After stirring, transfer t...

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PUM

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Abstract

The invention discloses a hydrophilic monomer ratio controlled synthetic technology for a hydrophobic high strength resin. The hydrophilic monomer ratio controlled synthetic technology for the hydrophobic high strength resin comprises the following steps: 1, hydrating sodium bentonite; 2, dissolving reaction substances; and 3, adding acrylic acid, an initiator and a crosslinking agent, and carrying out a pre-reaction and a heating reaction to obtain the resin. The synthetic technology which can successfully synthesize the hydrophobic high strength resin has the advantages of high synthetic yield, simple synthetic step, and synthetic cost reduction; and the imbibition rate of the synthesized hydrophobic high strength resin is be improved by controlling the hydrophilic monomer ratio in the synthetic technology.

Description

technical field [0001] The invention relates to a synthesis process of hydrophobic high-strength resin with controlled proportion of hydrophilic monomers. Background technique [0002] High water absorption is a functional polymer material with strong water absorption and water retention properties. It can absorb hundreds of times or even thousands of times its own weight of water, and can maintain water for a long time under a certain temperature and pressure of the external environment, which is unmatched by traditional liquid-absorbing materials such as sponges. [0003] In the 1960s, the earliest water-absorbent resin was produced by hydrolysis of starch-acrylonitrile graft copolymer by the US Department of Agriculture, which opened the prelude to extensive research on water-absorbent polymers around the world. Shortly thereafter, research reported that "the starch-derived water-absorbing resin has excellent water-absorbing capacity, and the gel has strong water retenti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/06C08F2/44C08K3/34
Inventor 袁俊海
Owner 袁俊海
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