In-situ polymerization intercalated composite gel material and its preparation method and application

A composite gel, in-situ polymerization technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problem of inability to achieve interfacial bonding, difficulty in obtaining nano-scale uniform blending, and difficulty in completely eliminating fillers and polymers. Problems such as the interfacial tension of the substrate, to achieve the effect of low production cost, easy operation and good mechanical strength

Active Publication Date: 2008-09-10
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reason is that when the particle size of the filler is reduced to 1-0.1 μm, the surface energy of the particles is so large, and the self-aggregation between the particles is very significant, making it difficult to obtain uniform blending at the nanometer scale by using the existing blending technology; Moreover, the existing interfacial modification technology is difficult to completely eliminate the interfacial tension between the filler and the polymer matrix, and cannot achieve ideal interfacial bonding.

Method used

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  • In-situ polymerization intercalated composite gel material and its preparation method and application
  • In-situ polymerization intercalated composite gel material and its preparation method and application
  • In-situ polymerization intercalated composite gel material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0040] Embodiment 1, preparation multi-quaternary ammonium salt type clay interlayer modifier

[0041] Put 32.4g (0.1mol) of ricinoleic acid into 15mL of xylene and 1.02g (0.01mol) of aluminum oxide into the reactor, after heating to 180°C, drop 5.3g of ricinoleic acid into the reaction solution with a dropping funnel (0.0515mol) of diethylenetriamine, the reaction is continuously separated by a water separator, stirred for 1.5hour, and evaporated to remove xylene to obtain bisamide;

[0042] Add 43.6g (0.05mol) of bisamide and 12ml of ethanol into the reactor, heat to 30°C, and drop 23g (0.05mol) of 3-chloro-2-hydroxypropyltrimethyl into the reaction system with a dropping funnel Ammonium chloride solution, heated up to 70°C, stirred and reacted for 2 hours to obtain multi-quaternary ammonium salt type clay interlayer modifier.

[0043] From attached figure 1 It can be seen that the interlayer distance of the clay modified by this clay interlayer modifier increases from the...

Embodiment 2

[0044] Embodiment 2, preparation multi-quaternary ammonium salt type clay interlayer modifier

[0045] Put 32.4g (0.1mol) of ricinoleic acid into 15mL of xylene and 1.02g (0.01mol) of aluminum oxide into the reactor. After heating to 220°C, add 5.3g of ricinoleic acid dropwise to the reaction solution with a dropping funnel (0.0515mol) of diethylenetriamine, the reaction is continuously separated by a water separator, stirred for 2.5hours, and evaporated to remove xylene to obtain bisamides;

[0046] Add 43.6g (0.05mol) of bisamide and 12ml of ethanol into the reactor, heat to 40°C, and drop 23g (0.05mol) of 3-chloro-2-hydroxypropyltrimethyl into the reaction system with a dropping funnel The ammonium chloride solution was heated to 80° C., stirred and reacted for 4 hours to obtain a multi-quaternary ammonium salt-type clay interlayer modifier.

Embodiment 3

[0047] Embodiment 3, preparation multi-quaternary ammonium salt type clay interlayer modifier

[0048] Put 32.4g (0.1mol) of ricinoleic acid into 15mL of xylene and 1.02g (0.01mol) of aluminum oxide into the reactor. After heating to 200°C, add 5.3g of ricinoleic acid dropwise to the reaction solution with a dropping funnel (0.0515mol) of diethylenetriamine, the reaction is continuously separated by a water separator, stirred for 2.0hours, and evaporated to remove xylene to obtain bisamides;

[0049] Add 43.6g (0.05mol) of bisamide and 12ml of ethanol into the reactor, heat to 35°C, and drop 23g (0.05mol) of 3-chloro-2-hydroxypropyltrimethyl into the reaction system with a dropping funnel Ammonium chloride solution, heated up to 75°C, stirred and reacted for 3 hours to obtain multi-quaternary ammonium salt type clay interlayer modifier.

[0050] From attached figure 2 It can be seen that the interlayer distance of the clay modified by this clay interlayer modifier increases...

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Abstract

The invention discloses an in-situ polymerization intercalation-type composite gel material and a preparation method and application thereof. The preparation method comprises the following steps: (1) interlayer dressing agent and clay are dissolved in water and are stirred 40 minutes to 60 minutes at a stirring speed of 10,000 to 15,000 r/min till the mixture is mixed evenly, thereby obtaining the mixing solution of the clay; (2) water-soluble monomer and initiator are added in the solution and are stirred 20 to 40 minutes at a stirring speed of 500 to 1,000 r/min till the mixture is mixed evenly; and (3) the reaction of the mixture is carried out under 80 to 140 DEG C for 6 hours to 12 hours. Moreover, the water-soluble monomer is one of or the random combination of acrylamide monomer, acrylic acid monomer, acrylonitrile monomer, acrylic ester monomer, allyl alcohol monomer, allyl urea monomer, allyl ether monomer, allyl ester monomer, allyl ether ester monomer and allyl azide monomer. Because the interlayer dimension of the composite gel material is between 4.5 nm and 6.0 nm, the composite gel material has excellent mechanical strength, injection performance, temperature resistance, salt resistance and plugging performance, thereby having a broad application prospect in the preparation of material for profile control and water shutoff.

Description

technical field [0001] The invention relates to the field of in-situ polymerization intercalation type organic-inorganic composite materials, in particular to the in-situ polymerization intercalation type composite gel material and its preparation method and application. Background technique [0002] The concept of preparing polymer-based organic-inorganic nanocomposites by intercalation in-situ polymerization was first proposed by Gianelis and Mehrotra et al. In the host (Host) of silicate clay (MTSs, MicaTypeSilicates) with a similar structure, in-situ polymerization between MTSs layers forms a two-dimensional ordered nanocomposite. In addition, polymers can also be directly intercalated in MTSs. Intercalation of polymer macromolecular chains can in some cases facilitate the exfoliation of MTSs to form nanoscale composites in the polymer matrix. Compared with conventional polymer-inorganic filler composite materials, organic-inorganic nanocomposites have the following ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08F20/00C08F16/00C08F26/02C08F18/00C08K9/04C08K3/34C09K8/42
Inventor 吕鑫岳湘安侯吉瑞
Owner CHINA NAT OFFSHORE OIL CORP
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