Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of nano-material modified powder polycarboxylate high-performance water reducer

A nanomaterial and polycarboxylic acid technology, which is applied in the field of preparing mortar and concrete admixtures, can solve the problems of high temperature resistance, high equipment requirements, easy combustion, etc., which is beneficial to industrialization promotion, and reduces production difficulty and production cost. Effect

Active Publication Date: 2019-04-16
LIAONING BUILDING SCI RES INST
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the preparation of powder polycarboxylate high-performance water reducer has the loss of water reducing rate, high viscosity, easy to stick to the wall, easy to burn, and low temperature resistance during the spray drying process. There is a danger of deflagration in the medium, and the problems of high requirements for equipment have not been completely resolved.

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 preparation method of nano-material modified powder polycarboxylate high-performance water reducer
  • A preparation method of nano-material modified powder polycarboxylate high-performance water reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the nano-material modified powder polycarboxylate high-performance water reducer comprises the following steps:

[0023] 1), synthetic polycarboxylate superplasticizer mother liquor

[0024] 11), prepare modified polyether macromonomer (CH 3 O(CH 2 CH 2 O) n H) 330g, add water 220g, be mixed with modified polyether macromonomer aqueous solution, comonomer total 35g, mix by mass ratio 1:1:1 by acrylic acid, methacrylic acid, fumaric acid, add water 65g, be mixed with copolymerization Aqueous monomer solution, total initiator 9.9g, mixed by hydrogen peroxide and ascorbic acid in mass ratio 3:1, add water 40.1g, be mixed with initiator aqueous solution, chain transfer agent total 3.3g, by mercaptopropionic acid, mercaptoacetic acid, multi-component Alcohol is mixed according to mass ratio 1:1:1, adds water 46.7g, is mixed with chain transfer agent aqueous solution;

[0025] 12), adding the comonomer aqueous solution, the initiator aqueous sol...

Embodiment 2

[0032] The preparation method of the nano-material modified powder polycarboxylate high-performance water reducer comprises the following steps:

[0033] 1), synthetic polycarboxylate superplasticizer mother liquor

[0034] 11), prepare modified polyether macromonomer (CH 2 =CHCH 2 O(CH 2 CH 2 O) n H 320g, add water 220g, be mixed with modified polyether macromonomer aqueous solution, comonomer totally 45g, mix by mass ratio 1:1:1 by acrylic acid, methacrylic acid, fumaric acid, add water 55g, be mixed with copolymerized monomer Aqueous solution of initiator, total 3.2g of initiator, mix by mass ratio 6:1 by hydrogen peroxide and ascorbic acid, add water 46.8g, be mixed with initiator aqueous solution, total 9.6g of chain transfer agent, by mercaptopropionic acid, mercaptoacetic acid, polyhydric alcohol Mix according to the mass ratio of 1:1:1, add 40.4g of water, and prepare the chain transfer agent aqueous solution;

[0035] 12), adding the comonomer aqueous solution, ...

Embodiment 3

[0042] The preparation method of the nano-material modified powder polycarboxylate high-performance water reducer comprises the following steps:

[0043] 1), synthetic polycarboxylate superplasticizer mother liquor

[0044] 11), prepare modified polyether macromonomer (CH 3 O(CH 2 CH 2 O) n H 330g, add water 200g, be mixed with modified polyether macromonomer aqueous solution, comonomer altogether 30g, mix by mass ratio 1:1:1 by acrylic acid, methacrylic acid, fumaric acid, add water 70g, be mixed with copolymerized monomer Aqueous solution of initiator, total 6.6g of initiator, mixed by hydrogen peroxide and ascorbic acid in mass ratio 5:1, add water 43.4g, be mixed with initiator aqueous solution, total 6.6g of chain transfer agent, by mercaptopropionic acid, mercaptoacetic acid, polyhydric alcohol Mix according to the mass ratio of 1:1:1, add 43.4g of water, and prepare the chain transfer agent aqueous solution;

[0045] 12), adding the comonomer aqueous solution, 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

No PUM Login to View More

Abstract

The invention discloses a preparation method of a nanomaterial modified powder polycarboxylic acid high performance water reducer. The preparation method comprises the following steps: 1) synthesizing a polycarboxylic acid water reducer mother solution; 2) modifying the polycarboxylic acid water reducer mother solution; 3) drying the modified polycarboxylic acid water reducer mother solution to a block through a roller, proportionally mixing the dried block with a volatile refrigerant, and breaking into a powder under the condition of low temperature; wherein the polycarboxylic acid water reducer mother solution is synthesized through a dropwise adding polymerization production process, and nano-calcium, nano-aluminum, nano-silicon and nano-carbon are mixed to serve as a modifying agent when the polycarboxylic acid water reducer mother solution is modified. The preparation method of the nanomaterial modified powder polycarboxylic acid high performance water reducer reduces the production difficulty and the production cost and is favorable for industrial popularization, and the water reducer prepared through the method has a good water reducing effect.

Description

technical field [0001] The invention relates to a method for preparing an admixture for mortar and concrete, and in particular provides a method for preparing a nano-material modified powder polycarboxylate high-performance water reducer. Background technique [0002] With the development of high-performance and multi-functional superplasticizers, polycarboxylate high-performance superplasticizers quickly occupy the vast majority due to their good water-reducing performance, good slump retention performance, and low shrinkage. part of the market. In recent years, polycarboxylate-based high-performance water reducers have been rapidly developed and successfully applied in the construction fields of concrete projects such as railways, bridges, water conservancy and hydropower, and have produced huge technical, economic and social benefits. [0003] At present, most polycarboxylate water reducers are sold in the market in the form of liquid, which is obviously uneconomical for...

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): C04B24/26C08F283/06C08F220/06C08F222/02C04B103/30
CPCC04B40/0046C04B2103/302C08F283/06C08F283/065C04B24/267C04B22/04C04B22/02C04B2103/0068C08F220/06
Inventor 范文涛
Owner LIAONING BUILDING SCI RES INST