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Preparation method of soap-free emulsion for concrete protective coating and equipment

A technology of protective coatings and soap-free emulsions, applied to laboratory containers, chemical instruments and methods, heating or cooling equipment, etc., can solve problems such as poor bonding performance and poor water resistance, achieve low surface free energy, improve water resistant effect

Pending Publication Date: 2022-01-11
NAT ENG LAB FOR HIGH SPEED RAILWAY CONSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as poor bonding performance and poor water resistance.

Method used

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  • Preparation method of soap-free emulsion for concrete protective coating and equipment
  • Preparation method of soap-free emulsion for concrete protective coating and equipment
  • Preparation method of soap-free emulsion for concrete protective coating and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Method for preparing soap emulsion with concrete protective coatings, such as figure 1 , Including the following method,

[0033] The first step: isobutylene polyoxyethylene ether and whole fluoropentaic acid, dodexyl heptanol in accordance with molar ratio 1: 1: 1, in concentrated sulfuric acid as a catalyst, carried out at 120 degrees Celsius body;

[0034]Step 2: Take the fluorine-containing monomer, butyl methacrylate, vinyl trimethoxysilane is monomer, sodium styrene sulfonate, 2-acrylamide-2-methylpropulfonic acid is ionic type The copolymerization of the emulsifier, adding distilled water, stirred evenly, warmed to 70 ° C, and an emulsion polymerization reaction of the initiator hypervonate is added;

[0035] The third step is: the polymerization time is 2 h, and the incubation of 1H is finally high fluorine-free soon fluorocarbon emulsion.

[0036] The amount of fluorine-containing monomer is 75 g, the amount of butyl methacrylate is 10 g, the amount of v...

Embodiment 2

[0049] Example 2: An apparatus in the preparation of soap-free emulsion according to the first embodiment, such as figure 2 and image 3 The heating device includes a base 1 and a heating sleeve insulating housing 11 disposed on the base 1, the intermediate of the heating sleeve insulating housing 11 is provided with a placement tank 121 and the rendering groove 121 is fixed to the heating kit body 12, and the heating kit body 12 is annular and The heating bottle 122 is supplied, and the heating sleeve insulating housing 11 is detachably coupled to the closure of the closed groove 121 in the heating cylinder 122 is placed in the heating kit body 12. The heating kit body 12 can be a electric heating wire, the closure block closed the slot 121, facilitating the heating kit body 12 to heat the heating bottle 122.

[0050] like image 3 and Figure 4 The closure includes a detachable connection to a plurality of vertical rods 123 on the end face of the heating sleeve insulating housing 1...

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PUM

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Abstract

The invention discloses a preparation method of a soap-free emulsion for a concrete protective coating and equipment and belongs to the technical field of concrete protection. The emulsion can improve the water resistance and cohesiveness of the coating. The preparation method is characterized by comprising the following steps of: mixing isobutenyl polyoxyethylene ether, perfluoroglutaric acid and dodecafluoroheptanol according to a molar ratio of 1: 1: 1, carrying out esterification at 120 DEG C by taking concentrated sulfuric acid as a catalyst to obtain a fluorine-containing macromonomer; 2, taking the fluorine-containing macromonomer, butyl methacrylate and vinyltrimethoxysilane as monomers, taking sodium p-styrenesulfonate and 2-acrylamido-2-methylpropanesulfonic acid as ionic copolymerization emulsifiers, adding the monomers into distilled water, performing uniform stirring, heating to 70 DEG C, and adding an initiator ammonium persulfate to carry out emulsion polymerization reaction; and 3, carrying out polymerization for 2 h, and carrying out heat preservation for 1 h to obtain the final high-fluorine-content soap-free fluorocarbon emulsion.

Description

Technical field [0001] The present invention relates to the field of concrete protection, in particular a method for preparing soap emulsion for concrete protective coatings and equipment. Background technique [0002] High-speed railway non-transistor models mainly include plate type, double-oriented, etc. Among them, there is a non-targeted track-bridge system due to its advantages such as high stability, high-level, less maintenance, which has become the main development direction of high-speed railway structures in the world. The rail - basic system is a material carrier of railway operations, and its service safety will directly affect the operation safety of the railway. Due to the complex track and its infrastructure system, the structural hierarchy, the function factors are complex, and each level of concrete appears under the long-term repetition of the train dynamic and environment (water, wind, frozen, temperature, etc.). Material deterioration, components and structur...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/18C08F230/08C08F212/14C08F220/58C08F2/26C08F2/01C08G65/337C09D151/08B01J19/00B01L7/00B01L3/00
CPCC08F283/065C08F2/26C08F2/01C08G65/337C09D151/08B01J19/0006B01L7/00B01L3/00B01J2219/00135C08F220/1804C08F230/085C08F212/30C08F220/585
Inventor 段峰涛王雪敏郭诚刘志如王金苏雅拉图安乐王爱东姚兵许春明杨震寰段沛材
Owner NAT ENG LAB FOR HIGH SPEED RAILWAY CONSTR
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