Portland cement

A Portland cement and acrylic emulsion technology, which is applied in cement production, sustainable waste treatment, solid waste management, etc., can solve the problems of reducing cement use efficiency and poor anti-corrosion performance, and achieve improved electrical conductivity and increased shrinkage Effect

Active Publication Date: 2022-01-07
宁夏亿昀特种工程材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the electrical conductivity of the product, the existing Portland cement introduces bentonite to enhance the electrical conductivity, but the anti-corrosion performance becomes worse

Method used

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  • Portland cement

Examples

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Embodiment 1

[0032] A kind of Portland cement of the present embodiment comprises the following raw materials in parts by weight:

[0033] 50 parts of Portland cement, 15 parts of polyurethane composite cyclodextrin modified grafted bentonite, 10 parts of synergistic additives, 5 parts of dispersed polyaniline, 1 part of surfactant sodium lauryl sulfate;

[0034] The preparation method of the polyurethane composite cyclodextrin modified grafted bentonite of the present embodiment is:

[0035] Step 1, modification of bentonite: send bentonite to calcination at 200°C for 10 minutes, after calcination, cool to room temperature naturally, send it into acrylic emulsion at a weight ratio of 1:3, and then add 10% of the total amount of bentonite to silane The joint agent KH560, the reaction speed is 100r / min, the reaction temperature is 75°C, and the reaction time is 20min; then add the initiator azobisisobutyronitrile with 2% of the total amount of bentonite, and continue to stir for 20min. Afte...

Embodiment 2

[0048]A kind of Portland cement of the present embodiment comprises the following raw materials in parts by weight:

[0049] 60 parts of Portland cement, 25 parts of polyurethane composite cyclodextrin modified grafted bentonite, 20 parts of synergistic additives, 15 parts of dispersed polyaniline, 6 parts of surfactant sodium lauryl sulfate;

[0050] The preparation method of the polyurethane composite cyclodextrin modified grafted bentonite of the present embodiment is:

[0051] Step 1, modification of bentonite: send bentonite to 300°C for calcination for 20 minutes, after calcination, cool to room temperature naturally, send it into acrylic emulsion according to the weight ratio of 1:3, and then add 20% of the total amount of bentonite to silane coupling Joint agent KH560, the reaction speed is 500r / min, the reaction temperature is 85°C, and the reaction time is 30 minutes; then add the initiator azobisisobutyronitrile with 5% of the total amount of bentonite, continue to ...

Embodiment 3

[0063] A kind of Portland cement of the present embodiment comprises the following raw materials in parts by weight:

[0064] 50-60 parts of Portland cement, 15-25 parts of polyurethane composite cyclodextrin modified grafted bentonite, 10-20 parts of synergistic additives, 5-15 parts of dispersed polyaniline, surfactant lauryl sulfate Sodium 1-6 parts;

[0065] Preferably, the Portland cement includes the following raw materials in parts by weight:

[0066] 55 parts of Portland cement, 20 parts of polyurethane composite cyclodextrin modified grafted bentonite, 15 parts of synergistic additives, 10 parts of dispersed polyaniline, and 3 parts of surfactant sodium lauryl sulfate.

[0067] The preparation method of the polyurethane composite cyclodextrin modified grafted bentonite of the present embodiment is:

[0068] Step 1, modification of bentonite: send bentonite to calcination at 200-300°C for 10-20min, after calcination, cool to room temperature naturally, send it into a...

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Abstract

The invention provides Portland cement. The Portland cement is prepared from the following raw materials in parts by weight: 50-60 parts of Portland cement, 15-25 parts of polyurethane composite cyclodextrin modified grafted bentonite, 10-20 parts of a synergistic auxiliary agent, 5-15 parts of dispersed polyaniline and 1-6 parts of a surfactant lauryl sodium sulfate. According to the preparation method disclosed by the invention, the bentonite is firstly calcined, lamellas of the bentonite are expanded, interlayer spacing is increased, the bentonite is used for dispersing raw materials, and compared with shrinkage and dispersion in the prior art, the dispersity of the polyurethane composite cyclodextrin modified grafted bentonite in the raw materials can be improved; and the bentonite adopts an acrylic emulsion and a silane coupling agent KH560, and then an initiator is added for polymerization.

Description

technical field [0001] The invention relates to the technical field of cement formula, in particular to Portland cement. Background technique [0002] Portland cement clinker mainly composed of calcium silicate, limestone or granulated blast furnace slag with less than 5% limestone or granulated blast furnace slag, and hydraulic cementitious materials made by grinding an appropriate amount of gypsum are collectively referred to as Portland cement. Portland cement. Portland cement is divided into two types. The type I Portland cement without mixed materials is called Type I, code-named P·I; the type II with limestone or granulated blast furnace slag mixed materials that do not exceed 5% of the cement mass is called Type II. Type Portland cement; the main mineral composition of Portland cement is: tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite. [0003] In order to improve the electrical conductivity of the product, the existing Po...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B22/12C04B20/04C04B22/04C04B111/20C04B111/94
CPCC04B28/04C04B40/0046C04B20/06C04B22/04C04B2111/20C04B2111/94C04B14/104C04B24/2652C04B24/16C04B22/12C04B20/023Y02W30/91
Inventor 费维莲
Owner 宁夏亿昀特种工程材料有限公司
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