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Preparation process of novel graphene concrete lithium-based curing agent

A lithium-based curing agent and preparation technology, applied in coatings, alkali metal silicate coatings, reflective/signal coatings, etc., can solve problems such as poor corrosion resistance, non-abrasion resistance, and poor heat reflection performance

Pending Publication Date: 2021-10-22
天蕊半导体材料(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the outdoor open-air environment, the current curing agent has the disadvantages of slow curing speed, poor heat reflection performance, non-wear resistance, and poor corrosion resistance. passable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A novel graphene permeable concrete curing agent consists of the following component mass ratios:

[0044] Raw materials. Mass ratio: 37% deionized water, 30% lithium silicate, 1% nano-zirconia powder (30-50nm), 2.5% ceramic particles, 7.5% silica gel, 5% glycerol, graphite Olefin semi-prepolymer 15%. Dispersant 0.5%, Penetrant 0.5%, Catalyst 1%.

[0045] Its preparation method comprises the following steps:

[0046] Step 1. Add 32kg of required deionized water into the dispersing tank, add 0.5kg of dispersant and 0.5kg of penetrating agent respectively, disperse 5-15mim, fully stir and mix to form a gel-like mixture, and control the mixing speed at 400- 500rpm;

[0047]Step 2. Add 2.5kg of ceramic microbeads, 7.5kg of silica gel, and 1kg of nano-zirconia powder (30-50nm) into the dispersing cylinder, control the speed of beating and grinding at 1400-1800rpm for 30-40 minutes, and then filter;

[0048] Step 3. Add 30kg of lithium silicate and 5kg of glycerol to the ...

Embodiment 2

[0056] A novel graphene permeable concrete curing agent consists of the following component mass ratios:

[0057] Raw materials. Mass ratio: deionized water 25%, lithium silicate 35%, nano-zirconia powder (30-50nm) 1.5%, ceramic particles 3%, silica gel 10%, glycerol 7.5%, graphene Semi-prepolymer 15%. Dispersant 0.5%, Penetrant 1%, Catalyst 1.5%,

[0058] Its preparation method comprises the following steps:

[0059] Step 1. Add 20kg of deionized water to the dispersing tank, add 0.5kg of dispersant and 1kg of penetrating agent respectively, and disperse 5-15mim; fully stir and mix to form a gel-like mixture. The mixing speed is controlled at 400- 500rpm;

[0060] Step 2. Add 3kg of ceramic microbeads, 10kg of silica gel, and 1.5kg of nano-zirconia powder (30-50nm) into the dispersing cylinder, control the rotation speed at 1400-1800rpm, beat and grind for 30-40 minutes, and then filter;

[0061] Step 3. Add 35kg of lithium silicate and 7.5kg of glycerin to the dispersion...

Embodiment 3

[0069] A novel graphene permeable concrete curing agent consists of the following component mass ratios:

[0070] Raw materials / mass ratio: deionized water 16.5%, lithium silicate 40%, nano-zirconia powder (30-50nm) 2%, ceramic particles 3.5%, silica gel 12.5%, glycerol 10%, graphene Semi-prepolymer 12.5%, dispersant 0.5%, penetrant 1.25%, catalyst 1.25%.

[0071] Its preparation method comprises the following steps:

[0072] Step 1. Add 11.5kg of required deionized water to the dispersing tank, add 0.5kg of dispersant and 1.25kg of penetrant respectively, and disperse 5-15mim; fully stir and mix to form a colloidal mixture, and the stirring speed is controlled at 400 -500rpm;

[0073] Step 2. Add 1.5kg of ceramic microbeads, 5kg of silica gel, and 1.5kg of nano-zirconia powder (30-50nm) into the dispersing tank, control the rotation speed at 1400-1800rpm for beating and grinding for 30-40 minutes, and then filter;

[0074] Step 3. Add 40kg of lithium silicate and 10kg of g...

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Abstract

As we known, graphene is a two-dimensional carbon nanomaterial with excellent mechanical properties, wherein the structure is stable, and the strength is high, meanwhile, good toughness is achieved, and ceramic particles have good heat reflection performance. However, graphene and ceramic particles are both of a non-polar structure and are poor in adhesive force, and exertion of the excellent performance of the graphene and the ceramic particles is affected. According to the invention, the graphene composite material and the ceramic particles are used as fillers, the surfaces of the fillers are modified, and the fillers are uniformly dispersed into the lithium-based matrix material in a chemical bonding manner for cross-linking fusion, so that the high-permeability lithium-based cement curing agent with excellent performance is formed. The graphene is embedded into a lithium-based curing agent containing ceramic particles in a chemical reaction cross-linking manner through a specific preparation process to form a stable water-soluble mixture, so that graphene functional groups and ceramic particle functional group free radicals can be rapidly dissolved in water and permeate into micro-cracks on the surface of concrete; and after the reaction, residues form silicic acid gel, concrete pores are effectively filled, and a compact solid is formed, so that the physical properties such as impact resistance, heat reflection performance and impermeability of the concrete surface are remarkably improved.

Description

Technical field: [0001] The invention belongs to the technical field of composite materials. Background technique: [0002] Defects in the surface quality of concrete structures or excessive wear during use can easily reduce the durability and life of concrete structures. The current technology uses epoxy resin and lithium-based curing agent to repair and strengthen the concrete surface. It has been widely used on concrete floors such as underground garages, large factory buildings, and port logistics warehouses, effectively improving the strength, hardness, and stain resistance of concrete surfaces. corrosion. However, in the outdoor open-air environment, the current curing agent has the disadvantages of slow curing speed, poor heat reflection performance, non-wear resistance, and poor corrosion resistance. Not so good. [0003] In view of the above problems, the present invention provides a lithium-based curing agent for the surface of water-based concrete, which can ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/68C09D1/04C09D7/61C09D7/63C09D7/65C09D5/33C09D5/08
CPCC04B41/68C04B41/5042C09D1/04C09D7/61C09D7/63C09D7/65C09D5/004C09D5/08C04B2111/2038C04B2111/00482C04B2111/60C04B41/5025C04B41/5024C04B41/5035C04B41/46C04B41/4896C04B41/4834C04B41/4884C04B41/5001C04B41/4596C04B41/4826C04B41/4861
Inventor 张燕张雨朱威施文韬
Owner 天蕊半导体材料(苏州)有限公司
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