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A kind of reinforced concrete rust inhibitor and preparation method thereof

A technology of reinforced concrete and rust inhibitor, applied in the field of rust inhibitor, can solve the problems of inability to popularize and apply green rust inhibitor, narrow source of raw materials, poor rust inhibitor effect, etc. The effect of improving the rust inhibition effect

Active Publication Date: 2018-08-10
HUIZHOU SENLUOKE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Commonly used green rust inhibitors include plant extracts, modified plant extracts, and amino acids, but these rust inhibitors more or less have the following deficiencies: (1) The effect is remarkable under acidic conditions, and in the alkaline environment of reinforced concrete The anti-rust effect is not good; (2) the stability is poor, and it is easy to decompose when encountering high temperature; (3) the source of raw materials is narrow and the price is high
These deficiencies lead to the inability of popularization and application of green rust inhibitors in reinforced concrete

Method used

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  • A kind of reinforced concrete rust inhibitor and preparation method thereof
  • A kind of reinforced concrete rust inhibitor and preparation method thereof
  • A kind of reinforced concrete rust inhibitor and preparation method thereof

Examples

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preparation example Construction

[0024] A preparation method for reinforced concrete rust inhibitor, which comprises steps:

[0025] (a) Take 1 kg of dehydrated mushrooms, crush them to 80-100 mesh, add 8L of 0.1mol / L NaOH solution, and soak for 8-12 hours;

[0026] (b) heating the soaked oyster mushroom to 60-65° C., keeping it for 1 hour and filtering while it is hot to obtain filter residue;

[0027] (c) Wash the filter residue until neutral, add 10mol / L NaOH solution, heat to 120-130°C, keep for 2 hours, filter while it is hot to obtain a filtrate, cool the filtrate to normal temperature, and filter the resulting white precipitate;

[0028] (d) Wash the white precipitate with water until neutral, add 1 liter of 8.82mol / LH 2 o 2 100 ml of 0.1mol / L acetic acid, heated at 50-60°C for 1 hour, raised the temperature to 100°C, kept for 10 minutes, and cooled to obtain the oyster mushroom extract;

[0029] (e) Add 0.1mol vanillin to the extract of Pleurotus ostreatus, control the temperature at 55-60°C to rea...

Embodiment 1

[0040] Weigh various raw materials according to the ratio of mass and number stated below

[0041] Modified oyster mushroom extract 30 parts

[0042] Calcium gluconate 1 part

[0043] Sodium dodecylbenzenesulfonate 2 parts

[0044]67 parts of water

[0045] The preparation method of described reinforced concrete rust inhibitor is as follows:

[0046] (1) Take 1KG dehydrated mushrooms, crush them to 80-100 mesh, add 8L 0.1mol / L NaOH solution, and soak for 8-12 hours; heat the soaked oyster mushrooms to 60-65°C and keep for 1 hour; Filtrate hot to obtain filter residue;

[0047] (2) Wash the filter residue obtained in step (1) until neutral, add 10mol / L NaOH solution, heat to 120-130°C, keep it for 2 hours, filter while it is hot, and obtain the filtrate; cool the filtrate to room temperature, white Precipitation occurs, filtered;

[0048] (3) Wash the white precipitate filtered in step (2) until neutral, add 8.82mol / LH 2 o 2 1L, 100ml of 0.1mol / L acetic acid, heat at 50...

Embodiment 2

[0052] Weigh various raw materials according to the ratio of mass and number stated below

[0053] Modified oyster mushroom extract 60 parts

[0054] Calcium gluconate 4 parts

[0055] Sodium dodecylbenzene sulfonate 6 parts

[0056] 30 parts of water

[0057] The preparation method of described reinforced concrete rust inhibitor is as follows:

[0058] (1) Take 1KG dehydrated mushrooms, grind them to 80-100 mesh, add 8L 0.1mol / L NaOH solution, soak for 8-12 hours; heat the soaked oyster mushrooms to 60°C and keep for 1 hour; filter while hot , get filter residue;

[0059] (2) Wash the filter residue obtained in step (1) until neutral, add 10mol / L NaOH solution, heat to 120-130°C, keep it for 2 hours, filter while it is hot, and obtain the filtrate; cool the filtrate to room temperature, white Precipitation occurs, filtered;

[0060] (3) Wash the white precipitate filtered in step (2) until neutral, add 8.82mol / LH 2 o 2 1L, 100ml of 0.1mol / L acetic acid, heat at 50-60°...

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Abstract

The invention provides a corrosion inhibitor for reinforced concrete and a preparation method of the corrosion inhibitor. The corrosion inhibitor comprises the following raw materials in parts by weight: 30-60 parts of a modified oyster mushroom extract, 1-4 parts of calcium gluconate, 2-10 parts of sodium dodecyl benzene sulfonate and 30-67 parts of water. The prepared corrosion inhibitor is green and environmentally friendly, and good in stability, and has a favorable corrosion inhibiting effect.

Description

technical field [0001] The invention relates to the field of rust inhibitors, in particular to a rust inhibitor suitable for reinforced concrete and a preparation method thereof. Background technique [0002] Since the advent of Portland cement in the 1920s, concrete materials have been used for more than 100 years. Due to its many advantages such as high structural rigidity, easy construction, low engineering cost, and low maintenance costs in the later period, it has become a civil engineering structure. The material of choice in design, China's cement production alone reached 2.3 billion tons in 2015. In fact, during the more than 100 years since concrete was used in civil engineering, a large number of reinforced concrete structures failed prematurely due to various reasons, failing to reach the scheduled service life. Some of these are caused by insufficient structural design resistance, some are caused by adverse changes in service loads, but more are caused by failur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C04B103/61
Inventor 魏亮
Owner HUIZHOU SENLUOKE MATERIAL TECH CO LTD