Konjac flying powder epoxy curing agent and preparation method and floor coating containing the curing agent

A technology of epoxy curing agent and konjac flying powder, which is applied in the field of polymer chemistry, can solve environmental pollution and other problems, and achieve the effects of easy-to-obtain raw materials, excellent wear resistance, and simple synthesis process

Active Publication Date: 2017-12-01
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A large amount of solid waste is produced in the processing of konjac powder. Konjac powder has been used as a cheap feed material or directly discarded for a long time. It has not been paid enough attention and caused serious environmental pollution. It has become more and more concerned by konjac processing enterprises. question

Method used

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  • Konjac flying powder epoxy curing agent and preparation method and floor coating containing the curing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of konjac flying powder epoxy curing agent, its preparation method is as follows: take konjac flying powder 10g and phenol 10g and join in the three-necked flask that stirrer and reflux condenser are housed, oil bath is preheated to setting temperature 150 ℃, Slowly add 0.4 g of mixed acid catalyst (75% sulfuric acid, 15% phosphoric acid, 10% oxalic acid) dropwise, cool to room temperature after reacting for 1 h, wash the reactant with methanol, filter, and remove methanol under reduced pressure to obtain the liquefied product of konjac flying powder. Add 10.0 g of the liquefied product of konjac flying powder to a four-necked flask equipped with electric stirring, condenser, thermometer and dropping funnel, and add 11.0 g of diethylenetriamine dropwise while stirring at 60 ° C, until the reaction system dissolves completely at 70 Slowly add 3.2g of formaldehyde dropwise at ℃. After the dropwise addition, raise the temperature to 80℃ for 2 hours, and then keep it ...

Embodiment 2

[0026] Add 1000g of epoxy resin E-51, 130g of epoxy diluent cardanol-based glycidyl ether into the disperser, after the resin is evenly dispersed, add 2g of leveling agent TEGO Glide B 1484, 3g of defoamer TEGO Airex900, and then Disperse evenly, add 1000g of quartz powder to disperse evenly at high speed, and then sand-mill to 80 mesh with a sand mill to obtain the A component of the floor coating. Take by weighing the konjac flying powder epoxy curing agent 300g prepared by the method in embodiment 1 as the B component of floor paint. Before painting, stir and mix components A and B evenly before construction. The construction process of the floor coating is as follows: base treatment → primer coating → putty → polishing → surface coating → anti-slip treatment. According to GB / T 22374-2008, the performance of floor coatings is determined. The surface of the solvent-free floor coatings is smooth and beautiful, with good wear resistance, pressure resistance, impact resistance...

Embodiment 3

[0028] A kind of konjac flying powder epoxy curing agent, its preparation method is as follows: take konjac flying powder 10g and nonylphenol 10g and join in the three-necked flask that agitator and reflux condenser are housed, oil bath is preheated to setting temperature 120℃ 0.2 g of mixed acid catalyst (80% sulfuric acid, 15% phosphoric acid, 5% oxalic acid) was slowly added dropwise, cooled to room temperature after 2 hours of reaction, the reactant was washed with methanol, filtered, and the methanol was removed under reduced pressure to obtain the liquefied product of konjac flying powder. Add 10.0g of konjac flying powder liquefied product to a four-necked flask equipped with electric stirring, condenser, thermometer and dropping funnel, and add 6.4g m-xylylenediamine dropwise while stirring at 50°C until the reaction system dissolves completely in Slowly add 1.6g of formaldehyde dropwise at 70°C. After the dropwise addition, raise the temperature to 80°C for 3 hours, th...

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Abstract

The invention discloses a preparation method of a konjac flying powder epoxy curing agent.The method includes the steps that firstly, konjac flying powder and a phenolic compound are prepared into a konjac flying powder liquefied product under the action of a mixed acid catalyst, then diamine and formaldehyde are added, and the konjac flying powder epoxy curing agent is prepared.The invention further discloses the konjac flying powder epoxy curing agent prepared through the method and terrace paint containing the curing agent.Waste, namely konjac flying powder, generated in the konjac fine powder processing process is comprehensively used, the konjac flying powder epoxy curing agent is prepared through conventional reaction, and resource waste and environment pollution caused by konjac processing waste are reduced.The obtained terrace paint has no solvent, the surface of a coated film is smooth and attractive, the coated film has the advantage of being good in abrasion resistance, pressure resistance, impact resistance and bending resistance, the leveling property and process operability are good, and cost is low.

Description

technical field [0001] The invention belongs to the field of macromolecule chemistry, and in particular relates to a konjac flying powder epoxy curing agent, a preparation method and a floor coating containing the curing agent. Background technique [0002] Floor coatings are one of the important fields of industrial coatings, and epoxy resin is one of the main film-forming materials for floor coatings. Because epoxy resin coating has high hardness, good wear resistance, excellent chemical resistance, smooth and beautiful, smooth surface and strong decoration, it can be widely used in floor coating of various industrial departments and related engineering floor coating, etc. each field. The characteristics of epoxy resin cured products mainly depend on the chemical molecular structure of epoxy resin and curing agent and the structure after curing and crosslinking. The structure and performance of the curing agent determine the application effect of the epoxy resin, so the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/62C09D163/00C09D7/12C09D7/00
CPCC08G59/62C09D7/20C09D7/61C09D7/65C09D163/00C08L83/04C08K3/36C08K3/34C08K2003/3045
Inventor 张俊珩胡凯丽周继亮张道洪张爱清
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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