Hardening-time-controllable magnesium oxysulfate cement and preparation method of hardening-time-controllable magnesium oxysulfate cement plate

A technology of magnesium oxysulfide cement and hardening time, applied in the field of building materials, can solve the problems of slow curing time, low mechanical strength, unfavorable construction operations, etc., and achieve the effect of not returning to halogen and improving production efficiency

Inactive Publication Date: 2017-12-22
SHANDONG JIANZHU UNIV
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unmodified magnesium oxysulfide cement, because its mechanical strength is much lower than that of magnesium oxychloride cement, limits its popularization and application
[0003] The production of architectural decorative panels with magnesium oxysulfate cement as

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] The raw materials are weighed according to the following parts by weight: 40 parts of active magnesium oxide, 50 parts of magnesium sulfate, 1.2 parts of modifier, 7 parts of light perlite, 20 parts of water, 13 parts of hemihydrate gypsum, and 9 parts of citric acid. Lay the transfer film on the glass plate, weigh various raw materials according to the proportions, first dissolve magnesium sulfate in water, control the Baume degree at 20°C to 27, and then mix with other weighed raw materials evenly to form a slurry and pour On the transfer film, it is flat and the thickness is about 10 mm. The initial setting time is 27 minutes, and the final setting time is 60 minutes. The modifier is made by mixing sodium gluconate and sodium methsilicate at a mass ratio of 70:30. The prepared decorative board has no deformation, cracking, and halogen return phenomenon.

Example Embodiment

[0021] Example 2

[0022] The raw materials are weighed according to the following weight ratios: 40 parts of active magnesium oxide, 50 parts of magnesium sulfate, 1 part of modifier, 7 parts of light perlite, 20 parts of water, 15 parts of hemihydrate gypsum, and 8 parts of citric acid. Lay the transfer film on the glass plate, weigh various raw materials according to the proportions, first dissolve magnesium sulfate in water, control the Baume degree at 20°C to 27, and then mix with other weighed raw materials evenly to form a slurry and pour On the transfer film, it is flat and the thickness is about 10 mm. The initial setting time is 12 minutes, and the final setting time is 45 minutes. The modifier is made by mixing sodium gluconate and sodium methsilicate at a mass ratio of 80:20. The prepared decorative board has no deformation, cracking, and halogen return phenomenon.

Example Embodiment

[0023] Example 3

[0024] The raw materials are weighed according to the following parts by weight: 40 parts of active magnesium oxide, 50 parts of magnesium sulfate, 0.7 parts of modifier, 7 parts of light perlite, 20 parts of water, 18 parts of hemihydrate gypsum, and 6 parts of citric acid. Lay the transfer film on the glass plate, weigh various raw materials according to the proportions, first dissolve magnesium sulfate in water, control the Baume degree at 20°C to 27, and then mix with other weighed raw materials evenly to form a slurry and pour On the transfer film, it is flat and the thickness is about 10 mm. The initial setting time is 8 minutes, and the final setting time is 30 minutes. The modifier is made by mixing sodium gluconate and sodium methsilicate at a mass ratio of 75:25. The prepared decorative board has no deformation, cracking, and halogen return phenomenon.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to hardening-time-controllable magnesium oxysulfate cement and a preparation method of a hardening-time-controllable magnesium oxysulfate cement plate. The cement is prepared from the following raw materials in parts by weight: 30 to 60 parts of active magnesia, 30 to 70 parts of magnesium sulfate, 0.5 to 2 parts of modifying agents, 5 to 10 parts of light perlite, 10 to 20 parts of hemihydrate gypsum and 5 to 10 parts of citric acid. A transfer film is laid on a glass plate; cement and water are weighed; the magnesium sulfate is firstly dissolved into water; then, the magnesium sulfate is uniformly mixed with other raw materials to form material slurry; the material slurry is poured onto the transfer film; flat spreading is performed; the maintenance is performed for 15 to 30 hours at the normal temperature; demoulding is performed; the transfer film is removed; a finished product is obtained. The prepared decoration plate does not deform, does not crack and does not generate halogenide; the initial setting time can be controlled to be longer than 30 minutes; the final setting time is controlled to be within 1 hour.

Description

technical field [0001] The invention relates to a magnesium oxysulfide cement, in particular to a magnesium oxysulfide cement with controllable hardening time and a preparation method for a board thereof, which belongs to the technical field of building materials. Background technique [0002] Magnesium oxysulfide cement is an inorganic gelling material prepared by mixing magnesium sulfate solution with light-burned magnesium oxide (MgO) powder. Both magnesium oxysulfide cement and magnesium oxychloride cement can be called magnesium cement, which has the characteristics of light weight, fire prevention, fast setting, sound insulation, and heat insulation. Compared with magnesium oxychloride cement, magnesium oxysulfide cement has the main advantages of good temperature resistance and poor corrosion resistance to steel bars. Unmodified magnesium oxysulfide cement, because its mechanical strength is much lower than that of magnesium oxychloride cement, limits its popularizat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B9/06C04B28/30
Inventor 张丰庆田清波岳雪涛徐丽娜陆希峰
Owner SHANDONG JIANZHU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap