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Superfine aluminum-calcium phosphate anticorrosion pigment preparation method

A technology of fine calcium aluminum phosphate and anti-corrosion pigment, which is applied in anti-corrosion coatings, inorganic pigment treatment, chemical instruments and methods, etc., to achieve the effect of improving solubility

Inactive Publication Date: 2018-02-27
湖南众普化工新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applied research shows that phosphate anti-rust effect is outstanding, but it has not been able to fully replace the above-mentioned toxic pigments in water-based anti-rust primers. This is mainly because there are some defects in single phosphate anti-rust pigments, and further research is needed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] a, weigh 0.78 g Al(OH) 3 (0.01 mol) and 1.7 mL of phosphoric acid (0.025 mol) with a density of 1.69 g / mL (to make the molar ratio of P and Al 2.5: 1), placed in a porcelain crucible, placed in a 90°C water bath and stirred for 15 min , until the mixture turns into a translucent viscous liquid; b, put the porcelain crucible in an oven at 90°C, and let the mixture continue to undergo neutralization reaction for 2 h; c, after the reaction of the mixture is complete, immediately transfer the porcelain crucible to 300°C In a muffle furnace, the condensation reaction was carried out for 4 h to obtain system A; d, 0.5 g CaCO 3 (0.005 mol) and 0.1 g of aluminate coupling agent used as a surface treatment agent were uniformly dispersed in a watering can filled with 20 mL of 60 °C deionized water to obtain dispersion system B; e, after the condensation reaction was completed, the Dispersion system B is sprayed on the hot aluminum tripolyphosphate condensate, and the condensate...

Embodiment 2

[0020] a, weigh 0.78 g Al(OH) 3 (0.01 mol) and 1.7 mL of phosphoric acid (0.025 mol) with a density of 1.69 g / mL (to make the molar ratio of P and Al 2.5: 1), placed in a porcelain crucible, placed in a 90 °C water bath and stirred for 15 min , until the mixture turns into a translucent viscous liquid; b, put the porcelain crucible in an oven at 90 °C, and let the mixture continue to undergo neutralization reaction for 2 h; c, after the reaction of the mixture is complete, transfer the porcelain crucible to a 320 °C oven In the muffle furnace, the condensation reaction was carried out for 2 h to obtain system A; d, 0.5 g CaCO 3(0.005 mol) and 0.1 g of aminosilane coupling agent used as a surface treatment agent were uniformly dispersed in a watering can filled with 20 mL of 60 °C deionized water to obtain dispersion system B; e, after the condensation reaction was completed, the dispersed System B is sprayed on the hot aluminum tripolyphosphate condensate, and the condensate ...

Embodiment 3

[0022] a, weigh 0.78 g Al(OH) 3 (0.01 mol) and 1.7 mL of phosphoric acid (0.025 mol) with a density of 1.69 g / mL (to make the molar ratio of P and Al 2.5: 1), placed in a porcelain crucible, placed in a 90 °C water bath and stirred for 15 min , until the mixture turns into a translucent viscous liquid; b, put the porcelain crucible in an oven at 90 °C, and let the mixture continue to undergo neutralization reaction for 2 h; c, after the reaction of the mixture is complete, transfer the porcelain crucible to a 290 °C oven In the muffle furnace, the condensation reaction was carried out for 4 h, and the system A was obtained; d, 0.5 g CaCO 3 (0.005 mol) and 0.1 g of phthalate coupling agent used as a surface treatment agent were uniformly dispersed in a watering can filled with 20 mL of 60 °C deionized water to obtain dispersion system B; e, after the condensation reaction was completed, immediately The dispersion system B is sprayed on the hot aluminum tripolyphosphate conden...

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PUM

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Abstract

The invention belongs to the technical field of material chemistry and specifically relates to a superfine aluminum-calcium phosphate anticorrosion pigment preparation method. According to the preparation method disclosed by the invention, a one-step synthesis method is utilized, surface modification and secondary breaking of the superfine aluminum-calcium phosphate anticorrosion pigment can be finished synchronously, energy is greatly saved, compatibility between the aluminum-calcium phosphate anticorrosion pigment and a system and anticorrosion ability of a paint film are improved, production cost is reduced, and the preparation method is suitable for practical popularization and application.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a preparation method of an ultrafine calcium aluminum phosphate anticorrosion pigment. Background technique [0002] The annual economic loss caused by metal corrosion in the world reaches 700 billion US dollars, which is about 6 times of the total loss of natural disasters such as earthquakes, fires and typhoons. Therefore, it is very important to vigorously develop excellent metal corrosion protection methods. One of the most effective and commonly used methods to prevent metal corrosion is to coat the metal surface with an anti-corrosion coating, and in the anti-corrosion coating, the key role is Anti-rust pigments, especially for emerging water-based anti-corrosion coatings. For a long time, the antirust pigments containing lead, chromium and other toxic heavy metals used in the paint industry have excellent antirust performance, but their serious harm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/06C09C3/08C09C3/12C09D5/08C01B25/45
Inventor 贺澄许宇峰黄云龙
Owner 湖南众普化工新材料科技有限公司
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