Preparation method for admixture for plasterboard, admixture prepared thereby, and composition for forming plasterboard comprising same

A technology for gypsum boards and admixtures, applied in the field of preparation of gypsum board-forming compositions and admixtures for gypsum boards, capable of solving problems such as gel formation, achieving the effects of improving physical properties, shortening setting time, and reducing costs

Pending Publication Date: 2022-01-18
SILKROAD C&T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem of gel formation when PCE and PNS are premixed before adding the admixture, so there is a limitation

Method used

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  • Preparation method for admixture for plasterboard, admixture prepared thereby, and composition for forming plasterboard comprising same
  • Preparation method for admixture for plasterboard, admixture prepared thereby, and composition for forming plasterboard comprising same
  • Preparation method for admixture for plasterboard, admixture prepared thereby, and composition for forming plasterboard comprising same

Examples

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preparation example Construction

[0047] [Preparation method of admixture for gypsum board and admixture]

[0048] According to an embodiment of the present invention, there is provided a method for preparing an admixture for gypsum board, the admixture for gypsum board includes a sulfonated polystyrene (Sulfonated Polystyrene, SPS) compound represented by Chemical Formula 1, the sulfonated Polystyrene compounds are made by sulfonating polystyrene with sulfuric acid.

[0049] Chemical formula 1:

[0050]

[0051] Among them, R 1 and R 2 selected from hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl, nitro, C 1 ~C 20 Alkyl, C 2 ~C 20 Alkenyl, C 2 ~C 20 Alkynyl, C 1 ~C 20 Alkoxy, C 3 ~C 10 Cycloalkyl, C 6 ~C 20 Aryl, C 1 ~C 20 Heteroaryl, monovalent non-aromatic fused polycyclic groups and monovalent non-aromatic fused heteropolycyclic groups,

[0052] a 1 is an integer selected from 1 to 5,

[0053] a 2 is an integer selected from 1 to 4,

[0054] m + for H + , Li + 、Na + 、K + o...

preparation example

[0133] Preparation example: preparation of SPS compounds

[0134] 1) Preparation of acetyl sulfate solution

[0135] Under the condition of inert nitrogen, cool the acetic anhydride to 0°C, and add 95-97% sulfuric acid, and then stir at room temperature until it becomes a transparent solution.

[0136] 2) Sulfonation

[0137] In the flask, polystyrene (Polystyrene) was dissolved in an organic solvent, and thereafter, the flask was purged with nitrogen gas for 30 minutes while being heated to 40°C. Then, after throwing in the said acetyl sulfate solution using the funnel, it stirred at 40 degreeC for 2 hours. Thereafter, when the solution was transparent yellow, 2-propanol was added, and after 30 minutes, it was cooled at room temperature to complete the reaction, thereby obtaining a polymerized sulfonated polystyrene compound. The resulting compound was isolated by washing in distilled water as needed.

[0138] 3) SPS compounds

[0139] The admixture was prepared by usi...

experiment example 1

[0140] Experimental example 1: IR measurement method (whether a sulfonic group is synthesized)

[0141] Whether a sulfonic group (sulfonic group) was synthesized on polystyrene in the sulfonated polystyrene (Sulfonated Polystyrene, SPS)-based compound prepared in 2) of the preparation example was analyzed using FT-IR measurement. show the result in figure 1 middle. In addition, at this time, the DS value was 35%. The FT-IR value of polystyrene without sulfonation reaction is shown in figure 2 in for comparison.

[0142] In addition, the degree of sulfonation (DS) of the sulfonated polystyrene compound can be estimated from the amount of the acetylsulfate solution injected. A more accurate measurement method can be through nuclear magnetic resonance (Nuclear magnetic resonance, NMR) spectroscopy (spectroscopy) and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (Matrix-assisted laser desorption ionization time-of-flight mass spectrometry, MAL...

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PUM

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Abstract

The present invention relates to a preparation method for an admixture for a plasterboard, an admixture for a plasterboard prepared thereby, and a composition for forming a plasterboard, comprising the admixture. More specifically, the present invention provides a sulfonated polystyrene(SPS)-based compound and relates to a technique that enables regulating of the properties of a plasterboard, such as pore size, flowability, and setting time, by regulating the degree of sulfonation (DS) of the SPS-based compound.

Description

technical field [0001] The present invention relates to a method for preparing an admixture for gypsum boards, the admixture prepared thereby, and a composition for forming gypsum boards containing the admixture. [0002] Specifically, an admixture for gypsum boards containing sulfonated polystyrene (Sulfonated Polystyrene, SPS) compounds is provided, in particular, an admixture capable of adjusting the air bubbles of gypsum boards by adjusting the degree of sulfonation (DS) of SPS compounds is provided. Technology for physical properties such as size, fluidity, and setting time. Background technique [0003] Gypsum board is mainly used as an interior material for construction, and is widely used because of its excellent fire resistance, sound insulation, and heat insulation properties, and it is relatively inexpensive. The types of gypsum boards include ordinary boards, hard boards, reinforced boards, decorative boards, etc., and according to the required characteristics o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/36C08F12/08C04B24/16C04B28/14C04B38/00C04B111/40
CPCC08F8/36C04B24/163C04B28/14C04B2111/40C08F12/08C04B24/32C04B22/147C04B38/00C04B2111/0062C04B28/145C04B24/22C08F212/08C04B24/2647C04B2103/14C04B2103/40C04B38/02C04B40/0039C08F2810/00
Inventor 朱永吉金大振李珉在金周焕朴光永车哲龙
Owner SILKROAD C&T
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