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Gypsum with favorable collapsibility

A good, gypsum technology, used in cement production and other directions, can solve problems such as poor collapsibility, collapsibility, and defects in handicrafts, and achieve the effect of perfect demoulding and improving collapsibility.

Inactive Publication Date: 2017-01-04
TAICANG CITY SHUANGFENG TOWN BOCAI ARTWORK FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the development of gypsum products, the demand for gypsum molds in glass products and other industries has become increasingly strong. Although ordinary gypsum molds can be tested at high temperatures, due to their poor collapsibility during the ejection process, resulting in Handicrafts are defective or even scrapped. How to solve the problem of collapse performance when the plaster mold is withdrawn is a content that needs to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Gypsum with good collapsibility is composed of the following components by mass: 45 parts of natural gypsum powder, 55 parts of slag powder, 7 parts of binder, 3 parts of flux, 2 parts of catalyst, and 5 parts of purified water. Mix natural gypsum powder and slag powder into the reaction furnace, heat to 250°C, keep for 2-3 minutes, add binder, flux, catalyst and pure water, stir and heat to 550°C, keep for 5 minutes, anneal, and the temperature drops slowly To normal temperature, out of the oven, curing for 2 days, to obtain the finished product.

Embodiment 2

[0013] Gypsum with good collapsibility is composed of the following components in parts by mass: 40 parts of natural gypsum powder, 60 parts of slag powder, 5 parts of binder, 2 parts of flux, 3 parts of catalyst and 6 parts of purified water. Mix natural gypsum powder and slag powder into the reaction furnace, heat to 250°C, keep for 2-3 minutes, add binder, flux, catalyst and pure water, stir and heat to 550°C, keep for 5 minutes, anneal, and the temperature drops slowly To normal temperature, out of the oven, curing for 2 days, to obtain the finished product.

[0014] Through research, it is found that simply using polyvinyl alcohol or sodium silicate as a binder cannot improve the collapsibility of gypsum, resulting in an imperfect demoulding process. When polyvinyl alcohol and sodium silicate are mixed as a binder, through correct The ratio can improve the collapsibility of gypsum and ensure the perfect ejection of the mold.

[0015] The invention can improve the collaps...

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PUM

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Abstract

The invention discloses gypsum with favorable collapsibility. The gypsum consists of the following components in parts by mass: 40-50 parts of natural gypsum powder, 50-60 parts of slag powder, 5-8 parts of a binder, 2-3 parts of a fluxing agent, 2-3 parts of a catalyst, and 5-8 parts of pure water, wherein the binder is sodium silicate and polyvinyl alcohol; the fluxing agent is borax; and the catalyst is lime powder. Through the manner, the gypsum can improve the collapsibility of the gypsum, and can guarantee that ejection is perfect.

Description

technical field [0001] The invention relates to the field of gypsum molds, in particular to a gypsum with good collapsibility. Background technique [0002] As one of the gel materials, gypsum occupies an important position in the national economy and is widely used in industries such as art models. It is an important industrial raw material. In recent years, with the development of gypsum products, the demand for gypsum molds in glass products and other industries has become increasingly strong. Although ordinary gypsum molds can be tested at high temperatures, due to their poor collapsibility during the ejection process, resulting in Handicrafts are defective or even scrapped. How to solve the problem of collapse performance when the plaster mold is withdrawn is a content that needs to be solved. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a kind of gypsum with good collapsibility, which can improve the c...

Claims

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Application Information

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IPC IPC(8): C04B7/153C04B12/00
CPCC04B7/1535C04B12/005Y02P40/10
Inventor 李建友
Owner TAICANG CITY SHUANGFENG TOWN BOCAI ARTWORK FACTORY