High temperature resistant inorganic binder for water-based paint and preparation method thereof

A technology of inorganic binder and water-based coating, applied in the field of refractory binder, to achieve strong bonding fastness, good thermal shock resistance, and simple application

Inactive Publication Date: 2019-05-21
SHENZHEN TRIUMPH TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the unavoidable technical defects of a single binder in the existing high-temperature protection field, and to provide a high-temperature-resistant inorganic binder for water-based coatings and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. 10wt% solid aluminum dihydrogen phosphate (average particle size 25 μm, P 2 o 5 The content is 63wt%, Al 2 o 3 Content 16wt%, Fe 2 o 3 content 0.02wt%), 80wt% quartz powder (average particle size 2μm, SiO 2 content 98wt%) and 10wt% boron glass powder (average particle size 10μm, boron content 28wt%) after mixing, the gas consumption is 3m 3 / min Jet mill is pulverized to obtain the mixed powder with a particle size of 150nm, and the classifying wheel speed is 3500r / min when the jet mill is working;

[0022] 2. Mix 10wt% rutile nano-titanium dioxide dispersion (average particle size 100nm, solid content 10wt%), 80wt% nanoscale zirconium sol (average particle size 100nm, solid content 5wt%) and 10wt% aluminum sol (average particle size 100nm , solid content 10wt%) mixed, stirred evenly to obtain a mixed liquid material;

[0023] 3. Weigh the mixed powder obtained in step 1 and the mixed liquid obtained in step 2 according to the mass ratio of 1:1, add the mixed ...

Embodiment 2

[0026] 1. 20wt% solid aluminum dihydrogen phosphate (average particle size 20μm, P 2 o 5 The content is 64wt%, Al 2 o 3 Content 16wt%, Fe 2 o 3 content 0.01wt%), 50wt% quartz powder (average particle size 1.5μm, SiO 2 content 98.5 wt%) and 30wt% boron glass powder (average particle size 9μm, boron content 29wt%) after mixing, the gas consumption is 3m 3 / min Jet mill is pulverized to obtain the mixed powder with a particle size of 200nm, and the classifying wheel speed is 3000r / min when the jet mill is working;

[0027] 2. Mix 5wt% rutile nano-titanium dioxide dispersion (average particle size 90nm, solid content 10wt%), 70wt% nanoscale zirconium sol (average particle size 90nm, solid content 10wt%) and 25wt% aluminum sol (average particle size 90nm , solid content 20wt%) mixed, stirred evenly to obtain a mixed liquid material;

[0028] 3. Weigh the mixed powder obtained in step 1 and the mixed liquid obtained in step 2 according to the mass ratio of 1:1, add the mixed ...

Embodiment 3

[0031] 1. 30wt% solid aluminum dihydrogen phosphate (average particle size 15μm, P 2 o 5 The content is 65wt%, Al 2 o 3 Content 16wt%, Fe 2 o 3 content 0.02wt%), 45wt% quartz powder (average particle size 2μm, SiO 2content 98 wt%) and 25wt% boron glass powder (average particle size 8μm, boron content 30wt%) after mixing, the gas consumption is 1m 3 / min jet mill is pulverized to obtain the mixed powder with a particle size of 250nm, and the classifying wheel speed is 2700r / min when the jet mill is working;

[0032] 2. Mix 10wt% rutile nano-titanium dioxide dispersion (average particle size 80nm, solid content 10wt%), 60wt% nanoscale zirconium sol (average particle size 80nm, solid content 20wt%) and 30wt% aluminum sol (average particle size 80nm , solid content 30wt%) mixed, stirred evenly to obtain a mixed liquid material;

[0033] 3. Weigh the mixed powder obtained in step 1 and the mixed liquid obtained in step 2 according to the mass ratio of 1:2, add the mixed powd...

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Abstract

The invention relates to a high temperature resistant inorganic binder for water-based paint and a preparation method thereof. The invention is characterized in that the binder is prepared from the following raw materials: 10-80 wt% of solid aluminium dihydrogen phosphate, 10-80 wt% of quartz powder, 5-30 wt% of borax glass powder, 5-30 wt% of titanium sol, 10-80 wt% of nano-sized zirconium sol and 10-80 wt% of aluminum sol. The preparation method comprises the following steps: 1. mixing 1.10-80 wt% of solid aluminum dihydrogen phosphate, 10-80 wt% of quartz powder and 5-30 wt% of boron glasspowder, and pulverizing by airflow to obtain nanoscale mixed powder; 2. uniformly stirring 2.5-30 wt% of titanium sol, 10-80 wt% of nano-sized zirconium sol and 10-80 wt% of aluminum sol, and uniformly stirring to obtain a mixed liquid material; 3. adding the mixed powders according to the mass ratio of 1: 1-6 into the mixed liquid material, controlling temperature to 40-110 DEG C, adding while stirring, and uniformly mixing. The invention has the following beneficial effects: 1. good high temperature resistance; 2. good thermal shock resistance; 3. strong bonding fastness; 4. simple application; and 5. the preparation method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of refractory binders, and in particular relates to a high-temperature-resistant inorganic binder for water-based coatings and a preparation method thereof. Background technique [0002] High-temperature resistant water-based coatings use water as the dispersion medium and are made of special inorganic high-temperature-resistant materials. The temperature-resistant range can reach -80-2000°C, which can effectively inhibit the heat radiation and heat loss of industrial high-temperature kilns. [0003] The application of high-temperature-resistant water-based coatings for thermal insulation of industrial kilns is becoming more and more widespread. The binders used in the field of high-temperature protection mainly include silicates, phosphates and sols. However, most high-temperature water-based coatings currently on the market have low bonding fastness and poor thermal shock resistance at high temperatures. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00
Inventor 王贵祥潘作付陈卓汤红运张彪万一刘燚
Owner SHENZHEN TRIUMPH TECH ENG
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