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Thixotropic multiplying agent and silicate-containing water-dispersible gel containing same

A thixotropic, water-containing emulsion technology, applied in the direction of gel preparation, colloid chemistry, colloid chemistry, etc., can solve the problems of complex preparation, high labor cost, economic cost, and difficulty in mixing uniformly, and achieve quick results, cost reduction, and use convenient effect

Inactive Publication Date: 2018-04-17
CHINA INST FOR RADIATION PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the preparation of the gel containing more than 6% silicate CM-20 is relatively complicated, because the silicate CM-20 powder with extremely small density is very bulky and difficult to mix into water, and it is very difficult to mix evenly, requiring tens of thousands of Speed ​​emulsifier to disperse
Since the price of laboratory-level emulsifiers reaches tens of thousands of yuan, and the price of factory-level emulsifiers reaches hundreds of thousands of yuan, this brings huge labor costs to the experiment and production of silicate CM-20 gel. economic cost

Method used

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  • Thixotropic multiplying agent and silicate-containing water-dispersible gel containing same
  • Thixotropic multiplying agent and silicate-containing water-dispersible gel containing same
  • Thixotropic multiplying agent and silicate-containing water-dispersible gel containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Preparation of 3% silicate CM-20 water dispersion gel with different amounts of thixotropic multiplier added and thixotropic performance test

[0031] Prepare silicate CM-20 water-dispersed gel containing 3% silicate CM-20 (silicate CM-20 water-dispersed gel purchased from Guangzhou Xuanning Chemical Technology Co., Ltd.), which is divided into two parts, wherein Add 1% thixotropic multiplier (containing: 11% triethanolamine, 4% methyl cellulose, 4% fatty acid monoglyceride, 0.5% Cathone, 3% fluorocarbon surfactant) to one part, and no addition to the other part The thixotropic multiplier is measured by the thixotropic ring method to draw its thixotropic ring figure respectively, and the obtained results are as follows: figure 1 shown.

[0032] The thixotropic ring test is a common method to characterize the thixotropy of a fluid. The test is divided into three cycles: the first cycle and the third cycle increase and decrease the shear rate linearly, respect...

Embodiment 2

[0034] Example 2: Preparation of 5% silicate CM-20 water dispersion gel with different amounts of thixotropic multiplier added and thixotropic performance test

[0035] Prepare silicate CM-20 water dispersion gel containing 5% silicate CM-20, divide into three parts equally, add 0%, 0.5%, 1.0% thixotropic multiplier (composed of: triethanolamine 11% , methyl cellulose 4%, fatty acid monoglyceride 4%, Kathon 0.5%, fluorocarbon surfactant 3%), mix uniformly, measure and draw the thixotropic ring pattern of three samples according to the thixotropic ring method respectively, the obtained The result is as figure 2 shown.

[0036] Depend on figure 2 It can be seen that the thixotropic performance of the sample added with 0.5% thixotropic multiplier is improved compared with that of the blank sample, and the thixotropy of the sample added with 1.0% thixotropic multiplier is significantly improved.

Embodiment 3

[0037] Example 3: Thixotropic structure reconstruction experiment of silicate CM-20 water-dispersed gel with thixotropic multiplier added

[0038] The viscosity recovery curve test was used to characterize the reconstruction speed of the thixotropic structure of the gel system after adding different amounts of thixotropic multipliers.

[0039] In production and life, people pay more attention to the sag resistance of the system after coating or glue coating, that is, the recovery rate of the thixotropic structure (viscosity) of the system. In the laboratory, a higher shear rate is generally used to destroy the thixotropic structure of the gel system as much as possible, then stop shearing, and use a shear rate as low as possible (as long as valid data can be measured) to measure the viscosity recovery of the system Condition. The higher and faster the viscosity of the system recovers, the better the thixotropy of the system.

[0040] In the thixotropic glue system provided b...

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Abstract

The invention belongs to the field of gel and relates to a thixotropic multiplying agent and a silicate-containing water-dispersible gel containing the same. The thixotropic multiplying agent is a water-containing milk-white slightly viscous fluid and is prepared from, in percentage by mass, 10%-20% of a surfactant, 2%-5% of a stabilizer, 3%-8% of an emulsifier and 0.5%-1% of a preservative, wherein the silicate-containing water-dispersible gel containing the thixotropic multiplying agent contains silicate CM-20 with the concentration of 1%-6% by mass and the thixotropic multiplying agent withthe concentration of 0.2%-2% by mass. The thixotropic multiplying agent is non-toxic, odorless, water-borne and environmentally friendly, can be conveniently added to the water-dispersible gel containing silicate CM-20, can rapidly and substantially improve the thixotropic property of the gel and has no side effects, the preparation process of the gel containing silicate CM-20 can be greatly simplified, and the preparation cost is reduced.

Description

technical field [0001] The invention belongs to the gel field, and relates to a thixotropic multiplier and a silicate water dispersion gel containing the same. Background technique [0002] Gel is a special fluid with good thixotropy. The so-called thixotropy (no special instructions, all refer to positive thixotropy) means that when the system is subjected to shear force, the viscosity of the system decreases to facilitate construction; High viscosity prevents it from sagging on the vertical and top surfaces. Thixotropy is an important property of the gel system, which directly affects the appearance, construction performance and storage stability of the gel system. [0003] Thixotropic agent is an important substance that provides thixotropy for the gel. Commonly used thixotropic agents include: silicate, organic bentonite, silicon dioxide, polyamide wax, hydrogenated castor oil, etc. Among them, silicate CM-20 is often used as a thixotropic agent in many industries bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
CPCB01J13/0065
Inventor 梁栋王永仙刘宇辰梁宇郭丽潇邓少刚张文俊于伟跃王旭东
Owner CHINA INST FOR RADIATION PROTECTION
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