Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of magnesium oxychloride cement and preparation method thereof

A technology of magnesium oxychloride cement and light-burned magnesia, which is applied in the field of magnesia cementitious materials, can solve the problems of easy deformation, frost return, and halogen return of products, and achieve the effect of stable phase structure, prevention of hydrolysis and performance loss

Active Publication Date: 2022-02-11
厦门瑞川复材科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, magnesium oxychloride cement products generally have poor water resistance. In rainy and humid weather, the surface of the product is wet, and then covered with water droplets, and even the water droplets flow into one piece. The product is easily deformed, which further causes brine and frost return Phenomenon

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of magnesium oxychloride cement and preparation method thereof
  • A kind of magnesium oxychloride cement and preparation method thereof
  • A kind of magnesium oxychloride cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take by weighing light-burned magnesium oxide (active MgO content is 60%) 10kg, mass concentration is the magnesium chloride solution 3.58kg of 10%, coagulant calcium chloride 0.018kg, triethanolamine 0.02kg, retarder trisodium phosphate 0.05kg, 0.04kg of citric acid, 0.15kg of surfactant lignosulfonate, 0.8kg of industrial waste fly ash containing SiO2, 0.10kg of curing agent methyl methacrylate emulsion, 0.12kg of metal or metal oxide copper powder, 0.08 of manganese ore powder kg, high alumina cement, and 6.2 kg of water, calcined light-burned magnesia at 750°C for 1.2 hours, and then mixed all the ingredients to obtain magnesium oxychloride cement. After inspection, the pass rate of its brine and frost return is 95.5%, the pass rate of water resistance is 96.2%, and the qualified products will not deform for 5 years. The inspection method is as follows:

[0032] 1) Inspection of returning brine and returning frost.

[0033] Brine return and frost return are relati...

Embodiment 2

[0041] Take by weighing light-burned magnesium oxide (active MgO content is 60%) 10kg, mass concentration is 3.58kg of magnesium chloride solution of 10%, coagulant sodium sulfate 0.02kg, triethanolamine 0.02kg, retarder oxalic acid 0.04kg, phosphoric acid 0.04kg , surfactant naphthalate 0.1kg, containing SiO 2 0.6kg of industrial waste silica fume, 0.12kg of curing agent styrene-acrylic emulsion, 0.12kg of metal or metal oxide zinc oxide, 0.15kg of sodium methyl silicate, 0.15kg of high alumina cement, and 6.2kg of water. Calcined at 750°C for 1.2 hours, and then mixed all the ingredients to obtain magnesium oxychloride cement. The detection method is the same as that in Example 1, and the qualified rate of returning brine and frost is 96.2%, and the qualified rate of water resistance is 97.0%. Qualified products will not be deformed for 5 years.

Embodiment 3

[0043] Take by weighing 10kg of light-burned magnesium oxide (active MgO content is 60%), mass concentration is 3.58kg of magnesium chloride solution of 10%, coagulant aluminum sulfate 0.03kg, triethanolamine 0.03kg, retarder oxalic acid 0.03kg, zinc sulfate 0.03kg kg, surfactant ethyl silicate 0.04kg, containing SiO 2 1.0kg of industrial waste slag, 0.04kg of curing agent chlorine partial emulsion, 0.04kg of metal or metal oxide boron oxide, 0.06kg of rosin acid soap, 0.06kg of high alumina cement, 6.2kg of water, calcined light-burned magnesia at 750°C After 1.5 hours, mix all the ingredients evenly to obtain magnesium oxychloride cement. The detection method is the same as that in Example 1, and the pass rate of its return to brine and frost is 95.8%, and the pass rate of water resistance is 96.5%. Qualified products will not be deformed for 5 years.

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 provides a magnesium oxychloride cement, which comprises the following components: lightly burned magnesia, magnesium chloride solution, coagulation accelerator, coagulation retarder, surfactant, industrial waste residue containing SiO2, curing agent, metal or metal oxide , high alumina cement, and the rest are water; the mass concentration of active MgO that can participate in the hydration reaction in the light-burned magnesia is a, the mass concentration of the magnesium chloride solution is C, the light-burned magnesia and the magnesium chloride The mass ratio of the solution=(2.24-5.62C) / a; the content of the coagulant is 0.2% to 15% of the mass of active MgO; the content of the SiO-containing industrial waste residue is 10% to 20% of the active The quality of MgO; the contents of the retarder, the surfactant, the metal or metal oxide of the curing agent, and the high alumina cement are all 0.3% to 3.0% of the mass of active MgO. The magnesium oxychloride cement has good waterproof performance and anti-halogenation performance.

Description

technical field [0001] The invention relates to a magnesium oxychloride cement and a preparation method thereof, belonging to the technical field of magnesium cementitious materials. Background technique [0002] Magnesium oxychloride cement, a magnesia cementitious material, uses lightly calcined powder obtained from calcined magnesite or ash powder (mainly composed of MgO) obtained from calcined dolomite at low temperature as the cement, and magnesium chloride hexahydrate (MgCl 2 ·6H 2 O) and other water-soluble magnesium salts as a blending agent, and then add water to form a cement hardened body. [0003] The main component of the hardened body formed by magnesium oxychloride cement is 5Mg(OH) 2 · MgCl 2 ·8H 2 O and 3Mg(OH) 2 · MgCl 2 ·8H 2 Magnesium oxide-magnesium chloride-water ternary compound crystal phase double salt composed of O crystal phase, in addition, there is a part of Mg(OH) 2 gel. [0004] During the preparation process of magnesium oxychloride c...

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): C04B9/12C04B9/02C04B9/06C04B9/20
CPCC04B9/12C04B9/06C04B9/02C04B9/20
Inventor 陈炬龙刘侠陈淑兴
Owner 厦门瑞川复材科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products