Polycarboxylic acid water reducing agent for gypsum and preparation method thereof

A technology of water reducer and polycarboxylic acid, which is applied in the field of polycarboxylate water reducer for gypsum and its preparation, can solve the problems of cumbersome operation and unfavorable rapid production of gypsum boards, achieve low energy consumption, do not delay gypsum solidification, and repeat good stability effect
CN101570411BActive Publication Date: 2012-01-25SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
Publication Date
2012-01-25

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Abstract

The invention discloses a polycarboxylic acid water reducing agent for gypsum and a preparation method thereof. The water reducing agent is prepared by copolymerizing unsaturated polyoxyalkylene base ether monomers, unsaturated monocarboxylic acid and derivative monomers thereof, and other monomers capable of being copolymerized with those monomers in a radical polymerization system. The gypsum water reducing agent has the advantages of high water-reducing rate, no delayed coagulation and the like, and the preparation method has the advantages of low energy consumption, high efficiency and good repeatability and stability.
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Description

technical field

[0001] The invention relates to a water reducer and a method for preparing the agent, in particular to a polycarboxylate water reducer for gypsum and a preparation method thereof. Background technique

[0002] Gypsum raw materials are divided into natural gypsum and industrial by-product gypsum. With the development of industry and science and technology, according to the characteristics and application methods of gypsum. The use of gypsum can be roughly divided into two categories: the first gypsum is directly used without satin firing, mainly used to adjust cement condensation, nickel smelting, tofu solidification, optical instruments, gypsum casting molds, etc.; Mature gypsum, used in the production of building materials, ceramic models, dental materials, chalk, handicrafts, grinding glass, tofu solidification, etc. Among them, gypsum cementitious material is one of the three traditional cementitious materials. Its raw materials can be natural gypsum an...

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
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