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Self-fixing zinc-rich primer in petroleum storage tank for resisting corrosion and preparation method thereof

A technology for petroleum storage tanks and zinc-rich primers, applied in anti-corrosion coatings, coatings, etc., can solve problems such as greater influence of ambient temperature, many post-processing procedures, and high market prices, and achieve good construction adaptability and increased flexibility Sex and adhesion, and the effect of adjusting construction process parameters

Inactive Publication Date: 2008-06-04
CNPC RES INST OF ENG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For many years, most of the inorganic zinc-rich coatings used in my country's anti-corrosion industry are water-based and post-curing. This type of inorganic zinc-rich coating must be prepared and used immediately, with poor storage performance, long drying time, easy precipitation and agglomeration, and complicated construction. There are many post-processing procedures, which are greatly affected by the ambient temperature, the market price is expensive, the cost is high, and it is not economical and practical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for manufacturing a self-curing zinc-rich primer for anti-corrosion in petroleum storage tanks. First, 0.001 parts by weight of 36% to 38% hydrochloric acid and 0.1 parts by weight of distilled water are prepared into a 0.1 mol / L hydrochloric acid solution, and 1 Put tetraethyl orthosilicate in parts by weight into a three-necked bottle immersed in a constant temperature water bath at 60±2°C, add 0.2 parts by weight of n-butanol, 0.14 parts by weight of absolute ethanol, and 0.068 parts by weight of butyl acetate while stirring. Esters, 0.068 parts by weight of dibasic acid esters, stirring speed 300 rev / min, airtight three-necked bottle. When the temperature in the bottle rises to 58°C, add the prepared 0.1mol / L hydrochloric acid solution dropwise with a dropping funnel within 2.5 hours, while paying attention that the reaction temperature does not exceed 75°C. If the reaction temperature exceeds 75°C, the dropwise addition should be stopped, and the dropwise ...

Embodiment 2

[0016] According to parts by weight, first prepare 0.0005 parts of 36%-38% hydrochloric acid and 0.055 parts of distilled water to make a 0.05-mol / L hydrochloric acid solution, and put 1 part of tetraethyl orthosilicate into a constant temperature water bath at 60±2°C In the there-necked flask, add 0.1 part of n-butanol, 0.1 part of absolute ethanol, 0.05 part of butyl acetate, and 0.05 part of dibasic acid ester while stirring, and the stirring speed is 300 rpm. When the temperature in the bottle rises to 55°C, add the prepared 0.05mol / L hydrochloric acid solution dropwise within 2 hours, while paying attention that the reaction temperature does not exceed 75°C. If the reaction temperature exceeds 75°C, stop the dropwise addition and wait until the temperature drops. Continue to add dropwise. After the dropwise addition, raise the temperature to 70±2°C, keep it warm for 1.5 hours, then cool down to 40°C and discharge to make liquid A in the coating; add 1 part of polyvinyl but...

Embodiment 3

[0018]According to parts by weight, first prepare 0.0015 parts of 36%-38% hydrochloric acid and 0.15 parts of distilled water to make a 0.1mol / L hydrochloric acid solution, and put 1 part of tetraethyl orthosilicate into the In the three-necked bottle, add 0.3 parts of n-butanol, 0.3 parts of absolute ethanol, 0.1 part of butyl acetate, and 0.1 part of dibasic ester while stirring, and the stirring speed is 300 rpm. When the internal temperature rises to 60°C, add the prepared 0.1mol / L hydrochloric acid solution dropwise within 2.5 hours. At the same time, pay attention that the reaction temperature does not exceed 75°C. If the reaction temperature exceeds 75°C, stop the dropwise addition and wait until the temperature drops. Continue to add dropwise. After the dropwise addition, raise the temperature to 70±2°C, keep it warm for 1.5 hours, then cool down to 40°C and discharge to make liquid A in the coating; add 1 part of polyvinyl butyral by weight In 2-3 parts of n-butanol a...

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Abstract

The invention relates to a self-fixed zinc-rich primer using for anticorrosion inside an oil tank and a preparation method thereof. The self-fixed zinc-rich primer comprises A solution which consists of tetraethyl orthosilicate, butanol, ethanol, butyl acetate, dibasic ester, 36-38 percent of hydrochloride and distilled water, and B solution which consists of polyvinyl butyral (PVB), butanol, ethanol, zinc powder, ultrafine ferrophosphorus powder, mica powder, fly ash, alkoxy ammonium salt with acidic group and block copolymers, and polysiloxane-polyether copolymer, when in use, the A solution and the B solution are mixed and solidified to form a paint film which is characterized by self-repairing, corrosion resistance, solvent resistance, static conducting, rapid drying and good construction adaptability, etc. The self-fixed zinc-rich primer can be used for surface anticorrosion treatment of steel structures used in inner walls and outer walls of various storage tanks and offshore drilling platforms, etc.

Description

technical field [0001] The invention relates to a self-solidifying zinc-rich primer for anti-corrosion in oil storage tanks and a preparation method thereof, which can be used for surface anti-corrosion treatment of steel structures such as inner and outer walls of various storage tanks and offshore oil drilling platforms. technical background [0002] For many years, most of the inorganic zinc-rich coatings used in my country's anti-corrosion industry are water-based and post-curing. This type of inorganic zinc-rich coating must be prepared and used immediately, with poor storage performance, long drying time, easy precipitation and agglomeration, and complicated construction. There are many post-processing procedures, which are greatly affected by the ambient temperature, the market price is expensive, the cost is high, and it is not economical and practical. Contents of the invention [0003] The purpose of the present invention is to avoid the shortcomings of the above-...

Claims

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Application Information

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IPC IPC(8): C09D129/14C09D5/10
Inventor 张丽萍解蓓蓓张彦军张盈盈韩文礼张其滨
Owner CNPC RES INST OF ENG TECH
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