CN104030309A - Fiber-type clay organic modification method based on dopamine modification - Google Patents

Abstract

The invention discloses a clay organic modification method based on dopamine modification. The method comprises the following steps: evenly mixing fiber-type clay and dopamine, rolling for 3-5 times and baking a rolled mixture at a baking temperature of 100-250 DEG C for 6-24 hours so as to obtain organic clay with a high active surface, wherein the adding amount of the dopamine accounts for 0.5-10wt% (Weight Percent) of that of the clay. The clay is modified by using a solid-phase heat treatment method, so that the process is simple to operate; three wastes, i.e., waste residues, waste gas and wastewater are prevented from being generated, so that the method is beneficial to industrial production. In addition, the obtained clay is high in organic degree and through and stable in modification; the activity of functional groups of the dopamine is fully maintained.

Description

The fibrous type clay method for organic modification of modifying based on Dopamine HCL

Technical field

The invention belongs to clay deep processing field, be specifically related to a kind of fibrous type clay method for organic modification of modifying based on Dopamine HCL.

Background technology

The conventional properties-correcting agent of clay has silane coupling agent, tensio-active agent and some high molecular polymers; Modification mode is generally wet method, is aided with to stir or ultrasonic, exist modification not thoroughly, complex steps, energy consumption be large, have the problems such as three wastes generation.

Because containing abundant phenolic hydroxyl group and amino, Dopamine HCL almost can adhere on any matrix, and can give the active group that material surface is new, makes after modification clay as the platform of second order reaction.Use at present the method for Dopamine HCL modification to be wet method, do not find the technique report of solid functional.

Summary of the invention

The object of the invention is to: a kind of fibrous type clay method for organic modification of modifying based on Dopamine HCL is provided, adopts the modification of solvent-free solid-phase thermal facture, simple to operate, without the three wastes, produce, be beneficial to suitability for industrialized production.

Technical solution of the present invention is: fibrous type clay and Dopamine HCL are mixed, and pair roller, cures mixture after pair roller, obtains the fibrous type polyorganosilicate of high activity surface; The 0.5-10 wt.% that wherein Dopamine HCL consumption is clay, pair roller 3-5 time, stoving temperature 100-250 ℃, cures time 6-24 h.

Its concrete steps are as follows:

1. mix: fibrous type clay is crossed 200 mesh sieves, adds Dopamine HCL, the 0.5-10 wt.% that Dopamine HCL consumption is clay, fully mixes;

2. pair roller: clay-Dopamine HCL mixture is sprayed to suitable quantity of water, the 5-20 wt.% that water consumption is clay, pair roller extrusion process 3-5 time;

3. cure: mixture after pair roller is cured to 6-24 h at 100-250 ℃, obtain the fibrous type polyorganosilicate of high activity surface.

The invention has the advantages that:

1. adopt solvent-free solid-phase thermal facture, simple to operate, without the three wastes, produce, be beneficial to suitability for industrialized production.

The polyorganosilicate of the high activity surface functionalization 2. obtaining by this method, organic degree is high, and modification is thorough and firm.

3. Dopamine HCL is as properties-correcting agent, gives clay surface high reactivity functional group, makes after modification clay as the platform of second order reaction.

4. clay is natural micro Nano material, and its desirable surf ace properties more coated modification of solid phase of Dopamine HCL provides good basis, and thermal treatment can promote Dopamine HCL molecule coated effectively sprawling with polymerization of clay surface.

Accompanying drawing explanation

Fig. 1 is former recessed native transmission electron microscope photo.

Fig. 2 is the organic recessed native transmission electron microscope photo of the high activity surface of modifying based on Dopamine HCL of the present invention.

Embodiment

Below in conjunction with specific embodiment, further illustrate technical solution of the present invention, these embodiment should not be understood as the restriction to technical solution.

Embodiment 1: the organic recessed soil that synthesizes the high activity surface of modifying based on Dopamine HCL according to following concrete steps:

1. mix: recessed soil is crossed 200 mesh sieves, in recessed soil, adds Dopamine HCL, 10 wt.% that its consumption is recessed soil fully mix;

2. pair roller: recessed soil-Dopamine HCL mixture is sprayed to suitable quantity of water, 15 wt.% that water is recessed soil, pair roller extrusion process 5 times;

3. cure: mixture after pair roller is cured to 24 h at 100 ℃, obtain the organic recessed soil of high activity surface.

Embodiment 2: the organic sepiolite that synthesizes the high activity surface of modifying based on Dopamine HCL according to following concrete steps:

1. mix: sepiolite is crossed 200 mesh sieves, adds Dopamine HCL in sepiolite, 5 wt.% that its consumption is sepiolite, fully mix;

2. pair roller: sepiolite-Dopamine HCL mixture is sprayed to suitable quantity of water, 5 wt.% that water is sepiolite, pair roller extrusion process 4 times;

3. cure: mixture after pair roller is cured to 6 h under 250 ℃ of conditions, obtain the organic sepiolite of high activity surface.

Embodiment 3: the organosilicon lime stone that synthesizes the high activity surface of modifying based on Dopamine HCL according to following concrete steps:

1. mix: vermiculite is crossed 200 mesh sieves, adds Dopamine HCL in vermiculite, the 0.5wt.% that its consumption is wollastonite, fully mixes;

2. pair roller: wollastonite-Dopamine HCL mixture is sprayed to suitable quantity of water, 20 wt.% that water is vermiculite, pair roller extrusion process 3 times;

3. cure: the mixture after pair roller is cured to 15 h at 180 ℃, obtain the organosilicon lime stone of high activity surface.

The organic recessed native transmission electron microscope photo of the high activity surface of above-described embodiment 1-3 gained as shown in Figure 2.

Claims (2)

1. the clay method for organic modification of modifying based on Dopamine HCL, is characterized in that: fibrous type clay and Dopamine HCL are mixed, and pair roller, cures mixture after pair roller, obtains the fibrous type polyorganosilicate of high activity surface; The 0.5-10 wt.% that wherein Dopamine HCL consumption is, pair roller 3-5 time, stoving temperature 100-250 ℃, cures time 6-24 h.

2. the fibrous type clay method for organic modification of modifying based on Dopamine HCL according to claim 1, is characterized in that its concrete steps are as follows:

1. mix: fibrous type clay is crossed 200 mesh sieves, adds Dopamine HCL, the 0.5-10 wt.% that Dopamine HCL consumption is clay, fully mixes;

2. pair roller: fibrous type clay-Dopamine HCL mixture is sprayed to suitable quantity of water, the 5-20 wt.% that water consumption is clay, pair roller extrusion process 3-5 time;

3. cure: mixture after pair roller is cured to 6-24 h at 100-250 ℃, obtain the fibrous type polyorganosilicate of high activity surface.