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

Cement mortar additive comprising hydrophobic silica, and preparation method therefor

A technology for cement mortars, manufacturing methods with applications in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc.

Active Publication Date: 2021-06-18
LOTTE FINE CHEM CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to solve the above-mentioned problems, and to provide a device that can prevent stagnation and solidification in the device due to the deliquescent property of urea even in the state of pulverizing urea, and improve the efficiency of urea. Additive for cement mortar which is stable in storage and can achieve uniform mixing when mixed with cement mortar, and method for producing the additive for cement mortar

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
  • Cement mortar additive comprising hydrophobic silica, and preparation method therefor
  • Cement mortar additive comprising hydrophobic silica, and preparation method therefor
  • Cement mortar additive comprising hydrophobic silica, and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Utilize top pulverizer to pulverize urea (spherical type (prill type), Mitsui Chemicals, Inc.) to the average particle size of 85 μ m, then according to the content in Table 1, mix hydrophobic type silica [mean Particle size: 7μm, Sipernat D17, Evonik Industries, specific surface area (ISO 5797-1) 110m 2 / g] and hydroxyethyl methylcellulose [HEMC, average particle size: 85 μm, 60,000 cps (Brookfield HA, 20rpm, 2.0%, 20°C), DS1.5, MS0.3, Lotte Fine Chemicals], thereby manufacturing Additives for cement mortar.

Embodiment 2 to Embodiment 4 and comparative example 1 to comparative example 4

[0055] The additive for cement mortar was manufactured by the same method as Example 1, and the additive for cement mortar was manufactured by mixing according to the content in Table 1.

[0056] In Comparative Example 2, hydrophilic silica (Sipernat 622S, Evonik Industries) was used instead of hydrophobic silica.

Embodiment 5 to Embodiment 7 and comparative example 5

[0058] Except that on the basis of the method of Example 1, the method of pulverizing urea in a state of being put in together with hydrophobic silica is used instead of pulverizing urea alone, the same method is used to manufacture additives for cement mortar, wherein according to Table 1 Content mixed manufacturing.

[0059] [Table 1]

[0060]

[0061] [Characteristic evaluation]

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a cement mortar additive and a preparation method therefor and, more specifically, to: a cement mortar additive which resolves inhomogeneity, a problem caused by the hygroscopicity of urea, so as to prevent the deterioration of the physical properties of cement mortar, and which improves the open time, water retention, workability and the like of the cement mortar; and a method for preparing the cement mortar additive.

Description

technical field [0001] The present invention relates to an additive for cement mortar containing hydrophobic silica and a manufacturing method thereof, in particular to a method for suppressing aggregation of the additive by adding hydrophobic silica to the additive for cement mortar containing urea and Thereby, the additive for cement mortar which improves long-term storage property, and its manufacturing method are provided. Background technique [0002] Cement mortar is the product of mixing cement and sand with an appropriate amount of water. The above-mentioned cement mortar is used for the interior, exterior, ceiling, and floor finishing of buildings, etc., in addition to the main materials such as cement and sand, and additionally includes materials for improving viscosity, adhesion, and working time. Equivalent additive composition. [0003] As a typical thickener of natural raw materials, cellulose ether is widely used in Such as construction additives, cosmetic ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/06C04B24/38C04B24/12C04B28/02C04B111/72
CPCC04B40/0042C04B2111/00086C04B2111/0081Y02W30/91C04B14/066C04B20/008C04B24/126C04B24/383C04B14/06C04B24/386C04B28/02C04B2111/72
Inventor 郑贤智权峰瑨朱祉垠
Owner LOTTE FINE CHEM CO LTD
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com