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Polymer with emulsifying water demulsifying and coalescence functions, and preparation method and applications thereof

A technology for emulsification of water and polymers, applied in the field of polymer materials and filter materials, can solve the problems of demulsification and dehydration behavior, long-term effect of materials, etc., to achieve a wide range of applications, efficient demulsification and coalescence, strong The effect of adhesion

Active Publication Date: 2019-10-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once the water absorption of sodium polyacrylate reaches the saturation equilibrium, the demulsification and dehydration behavior of the material will be greatly affected, resulting in the long-term use of the material being affected.
[0009] In summary, the previous inventive methods, whether through granular fillers, filter microporous membranes or inorganic coatings, or adsorption and dehydration materials, have relatively large limitations in practical industrial applications.

Method used

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  • Polymer with emulsifying water demulsifying and coalescence functions, and preparation method and applications thereof
  • Polymer with emulsifying water demulsifying and coalescence functions, and preparation method and applications thereof
  • Polymer with emulsifying water demulsifying and coalescence functions, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1 A polymer with emulsified water demulsification and coalescence functions

[0054] The raw material composition of the polymer with emulsified water demulsification and coalescence functions described in this example is shown in Table 1, and is prepared by the following steps:

[0055] I. prepare raw materials according to the proportioning shown in table 1;

[0056] II. Combine all monomers (polyethylene glycol (400) monoester methacrylate (the average degree of polymerization n is about 9), itaconic acid, hydroxyethyl methacrylate, glycidyl methacrylate, butyl acrylate ester, isooctyl acrylate, methyl methacrylate) and chain transfer agent (dodecanethiol), stir well, add 1 / 2 of the initiator (1.1 parts of azobisisobutyronitrile), stir well, to obtain a mixed solution;

[0057] III. Add organic solvent (dioxane and xylene) and remaining initiator (1.1 parts of azobisisobutyronitrile) in the reactor that is provided with stirring device, condensing device, t...

Embodiment 2

[0059] Example 2 A polymer with emulsified water demulsification and coalescence functions

[0060] The raw material composition of the polymer with emulsified water demulsification and coalescence functions described in this example is shown in Table 1, and is prepared by the following steps:

[0061] I. prepare raw materials according to the proportioning shown in table 1;

[0062] II. All monomers (polypropylene glycol (400) methacrylate monoester (the average degree of polymerization n is about 7), polyethylene glycol (200) monoacrylate (the average degree of polymerization n is about 4), acrylic acid Hydroxyethyl ester, butyl acrylate, ethyl methacrylate) and chain transfer agent (α-methylstyrene linear dimer), stir evenly, add two-thirds of the initiator (azobisisobutyronitrile 1.73 parts), stir well, obtain mixed solution;

[0063] III. Add organic solvent (isopropanol and butyl acetate) and remaining initiator (0.87 parts of azobisisobutyronitrile) in the reactor tha...

Embodiment 3

[0073] Embodiment 3 has the filter material of emulsified water demulsification, coalescing function

[0074] The polymer with emulsified water demulsification and coalescing functions prepared in the above-mentioned examples 1 and 2 is respectively mixed with curing agent amino resin (American Hytex Corporation, CYTEC327), and the polymer with emulsified water demulsifying and coalescing functions is accounted for according to the quality of the curing agent. After compounding 10wt% of the polymer, mix it evenly, dilute it with an organic solvent (same as the solvent used to prepare the resin) until the concentration of the solute (polymer and amino resin curing agent) is 3.0wt%, and filter the base paper with glass fiber Immerse in the above-mentioned diluted polymer mixed solution of Example 1, impregnate the non-woven filter material into the above-mentioned diluted polymer mixed solution of Example 2, take it out after soaking for three minutes, and use a drying device at ...

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Abstract

The invention discloses a polymer with emulsifying water demulsifying and coalescence functions, and a preparation method and applications thereof. The polymer is composed of 100 parts of a monomer, 1to 5 parts of an initiator, 0.5 to 3 parts of a chain transferring agent, and 100 to 900 parts of an organic solvent; the monomer is composed of 5 to 40 parts of a functional monomer containing amphiphilic molecular chain segments, 5 to 30 parts of acrylic acid monomer containing crosslinking groups, 10 to 60 parts of an acrylic ester soft monomer, and 0 to 40 parts of an acrylic ester hard monomer. The polymer possesses relatively high clunging force on a plurality of kinds of porous filter materials, material pore blocking is not caused after drying of the polymer, after contact collision of emulsified water drops with polymer surface, demulsification is caused, and coalescence is induced further, so that large water drops are formed, and it is convenient for separation; and the application prospect of the polymer in the field of oil water separation is promising.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and filter materials, and in particular relates to a polymer with the functions of demulsification and coalescence of emulsified water and its preparation method and application. Background technique [0002] Contaminated water in oil is an important indicator of oil quality and one of the main causes of engine failure. The polluted water in the fuel can decompose some additives in the oil to form acid, which will cause corrosion to the engine fuel injection system and the engine itself; at the same time, the existence of polluted water will accelerate the oxidation of the oil and form thick sludge, which is easy to damage Parts with pores such as nozzles and filters cause clogging. In addition, under low temperature conditions, the polluted water in the fuel will freeze and block the engine oil circuit, affecting the fuel supply; the water in the oil will reduce the combustion value of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/28C08F222/02C08F220/20C08F220/32C08F220/14C08F220/16B01D39/18B01D17/02
CPCC08F220/18B01D39/18B01D17/02C08F220/1804
Inventor 胡健徐桂龙梁云唐敏徐卜琴曾靖山龙金
Owner SOUTH CHINA UNIV OF TECH
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