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

Polycarboxylate-modified amino-alcohol cement grinding aid and preparation method thereof

A technology of cement grinding aids and alcohol amines, which is applied in the field of polycarboxylate modified alcohol amine cement grinding aids and its preparation, can solve the problem that the reaction progress of the product grinding aid performance is greatly affected, the performance stability is not ideal, Grinding aid effect is different, to achieve the effect of good cement dispersion, high polymerization activity and stable product performance

Inactive Publication Date: 2017-10-24
新疆西建卓越建材有限公司
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing several kinds of polycarboxylate cement grinding aids in the prior art, disclose a kind of polycarboxylate cement grinding aids as the patent that application number is 201310631683.6, mainly by: maleic anhydride, polyethylene glycol, formazan Acrylic acid, p-toluenesulfonic acid, benzoyl peroxide, water, etc., but toluene is needed as a solvent to synthesize the crude esterification product, and there is solvent recovery in the later stage, the process is complicated, and the grinding aid performance of the product is affected by the reaction progress of the crude esterification product Larger impact; application number is 201110172540.4 patent discloses a kind of polycarboxylate polymer synthetic type cement grinding aid, mainly is made up of, calcium hydroxide, water etc., and this patent is earlier by diethanolamine, maleic anhydride in 70 ℃ to react to obtain maleamide, and then polymerize it with allyl polyethylene glycol and ammonium persulfate to obtain polycarboxylate cement grinding aid. This process controls the degree of polymerization by adjusting the polymerization temperature and reaction time without Using an effective chain transfer agent, the obtained products have different grinding aid effects and unsatisfactory performance stability

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
  • Polycarboxylate-modified amino-alcohol cement grinding aid and preparation method thereof
  • Polycarboxylate-modified amino-alcohol cement grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 360 g of methallyl polyoxyethylene ether and 320 g of water, and put them into a 1000 ml round bottom flask as the reaction bottom solution.

[0035] Preparation of dropping solution A: 19.44g of acrylic acid, 40g of water, stirred evenly and placed in a dropping bottle.

[0036] Prepare drop solution B: 0.57g ascorbic acid, 0.46g thioglycolic acid, 68g water, stir evenly and place in the drop bottle.

[0037] When the solid is completely dissolved, add 6.95g of sodium methacrylate and 2.64g of hydrogen peroxide. After 10 minutes, start adding liquid A and liquid B dropwise at the same time. Control the drop of material A for 1 hour and the drop of material B for 1.5 hours. Continue After reacting for 1 hour, heat up to 60-80°C, then add 13.41g of triethanolamine, keep it warm for 3 hours, cool down to 25°C, add 15.8g of 30% lye to adjust the pH to 6-7, and add water to adjust the mass concentration to 40%. The cement grinding aid product of the present invention...

Embodiment 2

[0039] Weigh 360 g of methallyl polyoxyethylene ether and 320 g of water, and put them into a 1000 ml round bottom flask as the reaction bottom solution.

[0040] Preparation of dropping solution A: 17.21g of acrylic acid, 43g of water, stirred evenly and placed in a dropping bottle.

[0041] Prepare drop solution B: 0.57g ascorbic acid, 0.37g thioglycolic acid, 68g water, stir evenly and place in the drop bottle.

[0042] When the solid is completely dissolved, add 6.95g of sodium methacrylate and 2.64g of hydrogen peroxide. After 10 minutes, start adding liquid A and liquid B dropwise at the same time. Control the drop of material A for 1 hour and the drop of material B for 1.5 hours. Continue After reacting for 1 hour, heat up to 60-80°C, then add 13.41g of triethanolamine, keep it warm for 3 hours, cool down to 25°C, add 14.0g of 30% lye to adjust the pH to 6-7, and add water to adjust the mass concentration to 40%. The cement grinding aid product of the present invention...

Embodiment 3

[0044] Weigh 360 g of methallyl polyoxyethylene ether and 320 g of water, and put them into a 1000 ml round bottom flask as the reaction bottom solution.

[0045] Preparation of dropping solution A: 15.89g of acrylic acid, 44g of water, stirred evenly and placed in a dropping bottle.

[0046] Prepare drop solution B: 0.57g ascorbic acid, 0.31g thioglycolic acid, 68g water, stir evenly and place in the drop bottle.

[0047] When the solid is completely dissolved, add 6.95g of sodium methacrylate and 2.64g of hydrogen peroxide. After 10 minutes, start adding liquid A and liquid B dropwise at the same time. Control the drop of material A for 1 hour and the drop of material B for 1.5 hours. Continue After reacting for 1 hour, heat up to 60-80°C, then add 13.41g of triethanolamine, keep the temperature for 3 hours, cool down to 25°C, add 12.9g of 30% lye to adjust the pH=6~7, add water to adjust the mass concentration to 40% The cement grinding aid product of the present invention...

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 discloses a polycarboxylate-modified amino-alcohol cement grinding aid and a preparation method thereof. The method comprises the following steps: adding unsaturated polyoxyethylene ether into a reactor, adding water according to a mass ratio of 1 to 1, and fully stirring in order to completely dissolving solids; adding unsaturated sulfonate; stirring and adding an oxidant, performing a stirring reaction for 10 minutes, starting adding a solution A and a solution B dropwise simultaneously, adding completely for 1 to 1.5 hours; continuously reacting for 1 hour after finishing of the adding, heating the temperature to 60 to 80 DEG C, adding an amino-alcohol monomer into the reactor, continuously reacting for 3 to 4 hours, cooling to the temperature of 30 DEG C or less, adjusting the pH to a value of 6 to 7 with alkali liquor, and adding water for adjusting to obtain a product provided by the invention. The preparation method has the advantages of simple process, easiness in controlling reaction conditions, high reaction speed, environmental-friendliness; a synthetic product has stable performance, and has good effect of aiding grinding.

Description

technical field [0001] The invention relates to a cement grinding aid, in particular to a polycarboxylic acid modified alkanolamine cement grinding aid and a preparation method thereof, belonging to the field of cement grinding aids. Background technique [0002] Cement grinding aids are composed of one or several surface active substances, used in the grinding process can improve the grindability of materials, reduce the cohesion and agglomeration between particles, and eliminate the fine particles enveloping ball paste grinding lining. The plate phenomenon can be improved to improve the fluidity of the material in the mill, so as to achieve the goal of energy saving and high production of the mill. However, the cement grinding aids currently available in the market are all single chemical products or compounded from several simple chemical raw materials, which often have high prices and costs, and the source or batch number of each batch of monomer raw materials is differe...

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): C08F283/06C08F220/06C08F228/02C08F8/32C04B24/26C04B103/52
CPCC08F283/065C04B24/2694C04B2103/52C08F8/32C08F220/06C08F228/02
Inventor 熊锃杨金铭张平祁发忠王伟任艺
Owner 新疆西建卓越建材有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com