Mould plaster with good wet strength

A technology for wet strength and model plaster, applied in the field of model plaster, can solve problems such as poor water resistance and strength reduction, and achieve the effects of improving moisture absorption strength, reducing impact and improving structure

Inactive Publication Date: 2018-12-11
界首永恩机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional plaster mold has poor water resistance, and it has been in a humid and complex slurry environment for a long time, resulting in a sharp decline in its strength.

Method used

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  • Mould plaster with good wet strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A model gypsum with good wet strength, containing 8.8% by mass of butyl glucoside modified expanded perlite and 1.5% of 3-chloro-2-hydroxypropanesulfonic acid in the model gypsum with good wet strength Sodium modified starch.

[0020] Further, the preparation method of the butyl glucoside modified expanded perlite comprises the following steps:

[0021] Mix water glass and deionized water uniformly at a volume ratio of 1:3.2, heat to 75°C, and stir at a speed of 350r / min for 30 minutes to obtain a water glass solution, then add hydrochloric acid solution to the water glass solution to adjust the pH of the water glass solution to 1.8, keep it for 10 minutes, then add 10% hydroxymethylcellulose by mass to the water glass solution, stir at 2000r / min for 2 hours, then add disodium ethylenediamine tetraacetate, and adjust the pH of the water glass solution to 2.0 , then heated to 90°C, stirred at 300r / min for 1 hour, then cooled to 55°C, and continued to add ammonia water t...

Embodiment 2

[0032] A model gypsum with good wet strength, containing 9.5% by mass of butyl glucoside modified expanded perlite and 1.8% of 3-chloro-2-hydroxypropanesulfonic acid in the model gypsum with good wet strength Sodium modified starch.

[0033] Further, the preparation method of the butyl glucoside modified expanded perlite comprises the following steps:

[0034] Mix water glass and deionized water uniformly at a volume ratio of 1: 3.5, heat to 75°C, and stir at a speed of 350r / min for 30 minutes to obtain a water glass solution, then add hydrochloric acid solution to the water glass solution to adjust the pH of the water glass solution to 1.8, keep it for 10 minutes, then add 10% hydroxymethylcellulose by mass to the water glass solution, stir at 2000r / min for 2 hours, then add disodium ethylenediamine tetraacetate, and adjust the pH of the water glass solution to 2.0 , then heated to 90°C, stirred at 300r / min for 1 hour, then cooled to 55°C, and continued to add ammonia water ...

Embodiment 3

[0045] A model gypsum with good wet strength, containing 9.2% by mass of butyl glucoside modified expanded perlite and 1.6% of 3-chloro-2-hydroxypropanesulfonic acid in the model gypsum with good wet strength Sodium modified starch.

[0046] Further, the preparation method of the butyl glucoside modified expanded perlite comprises the following steps:

[0047] Mix water glass and deionized water uniformly at a volume ratio of 1:3.3, heat to 75°C, and stir at a speed of 350r / min for 30 minutes to obtain a water glass solution, then add hydrochloric acid solution to the water glass solution to adjust the pH of the water glass solution to 1.8, keep it for 10 minutes, then add 10% hydroxymethylcellulose by mass to the water glass solution, stir at 2000r / min for 2 hours, then add disodium ethylenediamine tetraacetate, and adjust the pH of the water glass solution to 2.0 , then heated to 90°C, stirred at 300r / min for 1 hour, then cooled to 55°C, and continued to add ammonia water t...

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Abstract

The invention discloses mould plaster with the good wet strength, and relates to the technical field of plaster products. The mould plaster with the good wet strength is prepared from, in percentage by mass: 8.8-9.5% of butyl glucoside modified expanded perlite and 1.5-1.8% of 3-chlorine-2-sodium hydroxypropanesulfonic acid modified starch. The prepared mould plaster has the excellent breaking strength, the low water absorption and the outstanding wet strength, through synergic effect of butyl glucoside modified expanded perlite and 3-chlorine-2-sodium hydroxypropanesulfonic acid modified starch, the performance of the mould plaster can be dramatically improved, and accordingly the effect of the mould plaster to resist the bad environment can be better improved.

Description

technical field [0001] The invention belongs to the technical field of gypsum products, in particular to a model gypsum with good wet strength. Background technique [0002] Sanitary ceramic utensils (such as toilets and bathtubs) are mainly formed by grouting in industrial production due to their large volume, complex structure, and smooth surface. Gypsum model is a traditional mold for grouting molding. It has advantages that other materials (such as resin molds, steel molds, etc.) cannot match: abundant resources, low price; fast setting and hardening, high water absorption; good dimensional stability of the model, low scalability ;The model has clear edges and corners, and the reproduction lines are beautiful; it is green and environmentally friendly, and has a unique "breathing effect". However, the traditional plaster mold has poor water resistance, and it has been in a humid and complex slurry environment for a long time, resulting in a sharp decline in its strength....

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B28/14C04B2201/50C04B24/38C04B14/185C04B2103/302
Inventor张海涛
Owner界首永恩机电科技有限公司