Building gypsum coagulant and preparation method thereof

A technology of building gypsum and setting modifier, which is applied in the field of building materials, can solve the problems of inability to adjust the interval between initial setting and final setting, seldom used, and long hair after nitrification.

Active Publication Date: 2016-03-16
CHENGDU SHANGZHU BUILDING MATERIALS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the building gypsum coagulation regulators used in industrial production are divided into two categories: retarders and coagulation accelerators. Common retarders include citric acid, polyphosphate, borax, tartaric acid, bone glue, protein organic matter, etc. These Retarders will either reduce the strength of the product or be expensive, and are rarely used in the production of gypsum wall materials
Common coagulants are mainly sulfates, such as sodium sulfate, potassium sulfate, etc., but the incorporation of such sulfates will cause hair growth and other phenomena, which is not suitable for the production of gypsum wall materials
At the same time, these coagulation regulators cannot adjust the interval between initial setting and final setting of ordinary building gypsum.

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
  • Building gypsum coagulant and preparation method thereof
  • Building gypsum coagulant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with specific examples.

[0028] A kind of preparation of building gypsum coagulant, comprises the following steps:

[0029] ①. The weighed specific surface area is 1000-4000cm 2 / g of commercially available building gypsum A is ground for 1 to 15 minutes to obtain ground building gypsum with a specific surface area of ​​5,000 to 10,000 cm 2 / g; 2. Take building gypsum and polycarboxylate water reducer after grinding, and the amount of polycarboxylate water reducer is 0.4-1.3% (percentage by weight) of the amount of building gypsum after grinding; 3. Take the weighed After good grinding, 1 / 10 of the building gypsum and the water reducer are stirred evenly at a speed of 10-50 rpm to obtain the mixture I for later use; ④, the mixture I and the remaining 9 / 10 have been weighed After the ground building gypsum is stirred evenly at a speed of 50-200 rpm, the gypsum coagulation modifier referred to in the ...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention discloses a building plaster thickening time control agent and a preparation method thereof, relating to a building material. The building plaster thickening time control agent comprises the following two components: building plaster with the specific surface area of 5000-10000cm<2> / g, and a polycarboxylic acid water-reducing agent, wherein the weight of the polycarboxylic water-reducing agent is 0.4-1.3% of that of the building plaster with the specific surface area of 5000-10000cm<2> / g. Compared with the prior art, the protected building plaster thickening time control agent is capable of shortening the die sinking time in production of products, and improving the production efficiency.

Description

technical field [0001] The invention relates to a building material, in particular to a building gypsum coagulation regulator and a preparation method thereof. Background technique [0002] Building gypsum refers to calcium sulfate dihydrate (CaSO 4 2H 2 O) prepared by dehydration, with β-calcium sulfate hemihydrate (β-CaSO 4 ·1 / 2H2O) as the main component of powdery gelling material. Natural gypsum, phosphogypsum, and desulfurized gypsum are three types of gypsum that are currently widely used in construction. Since the main component of the coagulation regulator involved in the present invention is the ground building gypsum, in order to distinguish it from the unground building gypsum, the 1000~4000cm 2 / g of building gypsum is called ordinary building gypsum. [0003] Ordinary building gypsum, as one of the three major cementitious materials, can be used to produce building materials such as plastering gypsum, gypsum blocks, gypsum wallboards, and paper-faced gypsum...

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 Patents(China)
IPC IPC(8): C04B24/26
Inventor 黄彬黄涛庄端文徐晓东
Owner CHENGDU SHANGZHU BUILDING MATERIALS
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