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A modified naphthalene series superplasticizer

A technology of naphthalene-based water reducer and high-efficiency water reducer, which is applied in the field of concrete admixtures, can solve the problems of limited processing capacity, low efficiency, complex process, etc., achieve the effects of reducing usage, reducing costs, and solving environmental pollution problems

Active Publication Date: 2017-11-28
王立巍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these treatment methods generally have problems such as complex process, low efficiency and limited treatment capacity, and cannot fundamentally solve the troubles that MSG waste liquid brings to people's daily production and life.

Method used

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  • A modified naphthalene series superplasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Fully mix 90kg of naphthalene-based high-efficiency water reducer and 10kg of modified monosodium glutamate waste liquid in a mixing tank to obtain a modified naphthalene-based high-efficiency water reducer.

[0016] The modified monosodium glutamate waste liquid is prepared by the following method: take 20kg of 40% solid content of monosodium glutamate waste liquid into the reactor, add 2kg of hydrogen peroxide (30% concentration), 0.002kg of copper sulfate, mix well, start to heat up to 85°C, and keep warm for 4 hour, down to room temperature, to obtain modified monosodium glutamate waste liquid.

Embodiment 2

[0018] Fully mix 92kg of naphthalene-based high-efficiency water reducer and 8kg of modified monosodium glutamate waste liquid in a mixing tank to obtain a modified naphthalene-based high-efficiency water reducer.

[0019] The modified monosodium glutamate waste liquid is prepared by the following method: take 20kg of 40% solid content of monosodium glutamate waste liquid into the reactor, add 1.8kg of hydrogen peroxide (30% concentration), 0.002kg of ferrous sulfate, mix well, and start to heat up to 80°C. Insulated for 5 hours, cooled to room temperature to obtain modified monosodium glutamate waste liquid.

Embodiment 3

[0021] Fully mix 94kg of naphthalene-based high-efficiency water reducer and 6kg of modified monosodium glutamate waste liquid in a mixing tank to obtain a modified naphthalene-based high-efficiency water reducer.

[0022] The modified monosodium glutamate waste liquid is prepared by the following method: take 20kg of 40% solid content of monosodium glutamate waste liquid and put it into the reactor, add 1.6kg of ammonium persulfate and 0.0018kg of copper sulfate, mix well, start to heat up to 85°C, and keep it warm for 3 hours. Cool down to room temperature to obtain modified monosodium glutamate waste liquid.

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Abstract

The invention belongs to the technical field of concrete admixtures in building materials. Through a simple oxidation process, the monosodium glutamate waste liquid is chemically modified, so that it can partially replace the naphthalene-based high-efficiency water reducer and meet the technological requirements of concrete production. Due to the large amount of naphthalene-based high-efficiency water reducer, a large amount of MSG waste liquid can be used, and a very feasible way out for solving MSG waste liquid is proposed. At the same time, it can reduce the usage of naphthalene-based high-efficiency water reducer and greatly reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures in building materials, and in particular relates to a preparation method of a naphthalene-based high-efficiency water reducer. Background technique [0002] Concrete admixture is one of the essential components of modern concrete, and water reducing agent is the most widely used admixture. After adding water reducer to concrete, it can improve the workability of concrete, increase the strength of concrete and save cement. Among many water reducers, naphthalene-based high-efficiency water reducers are currently one of the main products in the domestic market. However, because the price of naphthalene-based high-efficiency water reducers is greatly affected by the price fluctuations of the main raw material industry naphthalene, formaldehyde is used in the synthesis process, and there are high environmental protection requirements for production, coupled with the rapid development of po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/00C04B103/30
Inventor 王立巍
Owner 王立巍